JPH1031397A - Regenerating method of image recording paper which can be regenerated, and its regenerating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a regenerating method and regenerating device for an image recording paper so that an image forming material can be easily removed from the paper without damaging the surface of the image recording paper. SOLUTION: A releasing liquid 15 is applied on an image recording paper 13 having release property the surface of which has an image formed by using an image forming material containing a hot-melt component. While the image forming material is heated, a peeling member which faces the image presses the image so that the image forming material is transferred from the image recording paper 13 to the peeling member to regenerate the image recording paper 13. In this case, the image recording sheet 13 having release property is produced by applying a liquid compsn. containing a hardening silicon compd. which directly reacts with fiber on a paper or by impregnating a paper with the liquid, and then drying. The regenerating device has a means to apply a peeling liquid 15 containing at least water on the image recording paper 13 having an image, a heating means to heat the image forming material and a pressing means to press the image recording paper 13 to the peeling member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for reproducing an image recording sheet used in an electrophotographic system or a thermal transfer system, and more particularly to a method for reproducing an image forming sheet from an image recording sheet holding an image forming material. To remove
The present invention relates to a method of reproducing a reproducible image recording sheet and a reproducing apparatus for reproducing the image recording sheet, which can repeat image formation and removal of the image recording material.

[0002]

2. Description of the Related Art In recent years, global environmental problems have surfaced and the importance of protecting forest resources has been recognized, and reducing the use of wood resources as paper raw materials has become an important issue. As part of measures to reduce usage, paper that has been used once is not discarded as garbage, but is being reused as used paper. However, while recycled paper is an important resource recovery, it has many problems before it can be recycled. For example, regarding the recovery of used paper, especially in companies, there is the problem of leakage of confidential documents and data, the problem of work and transportation such as separation and collection by paper type,
There are various problems, such as a problem of a collection place of collected waste paper and a management problem. Further, in the recycling of used paper, the fibers of the pulp are shortened in order to re-pulp the used paper, which causes deterioration in the quality of the used paper, and further requires an apparatus for deinking ink and the like in the image portion. Since the paper making apparatus itself is huge, complicated, and expensive, there is a problem that the recycling of used paper cannot be carried out by an individual at all, and the company must rely on a specific company. Paper recycling, these separate collection, transport, accumulation, if operation such a huge apparatus is performed efficiently, is consumed in large quantities of energy (emissions of CO ₂ increases) will be, resulting in environmental One of the problems may be to further promote the global warming phenomenon accompanying the increase in the amount of CO ₂ .

As a method for solving such a problem, there has been proposed a method of erasing and reproducing an image on a sheet of paper which has been used once. Examples of this method include the method described in the following publication. JP 2
Japanese Patent Application No. 55195/1993 discloses an image erasable printing method in which a plastic, metal, paper or ceramic having no liquid permeability is used as an image support, and a release agent made of silicone rubber called a silicone sealant is applied to the surface of the image support. The body is disclosed. The image erasing method is such that an image formed with a hot-melt ink on an image support is heated and pressed with a hot-melt release body interposed therebetween, and after cooling, the image is adhered to the release body side and peeled from the support. Take it. In this case, the release agent film has a migration property, and during transportation in the image forming apparatus, a part of the release agent adheres to a contact portion of a transport roller or the like, and the paper becomes jammed because it becomes slippery. Or repeating this causes problems such as toner floating in the apparatus adhering to the image surface and causing contamination.

On the other hand, if the release agent is formed into a thin film in order to reduce the migration property, the hot-melt ink cannot be peeled off from the support. In order to remove the hot-melt ink even with a thin film, the surface smoothness may be increased, but in that case, the image fixing property is deteriorated. In the above-mentioned publication, a liquid-impermeable substrate such as polyethylene terephthalate (PET) film or laminate film having a smoothness of at least 300 seconds or more by a Beck's smoothness meter is usually used. Is used. The presence of the above-mentioned migration property also means that the effect of the film as a release agent is reduced by repeated regeneration treatment. That is, the weakness of the connection, such as the attachment to the image support, is the cause of the migration.

On the other hand, if the image recording material is fixed on a film having a thickness sufficient for peeling off the hot-melt ink, for example, 3 μm or more, the fixability is eventually poor, and the image portion is easily peeled off only by rubbing with a hand or the like. There is a problem that the record keeping ability is lacking. As described above, the techniques disclosed in the above publications have problems in film transfer prevention, image fixing, and peelability.

In Japanese Patent Application Laid-Open No. Hei 5-216376, a recording paper coated with a release agent on a recording surface is used. Techniques for transferring and removing constituent toners are disclosed. In this technique, silicone oil, fluorinated oil, other aliphatic oils and the like are used as a release agent. When these oils are used, the recording paper must be applied at a density enough to exhibit transparency in order to exhibit a sufficient release effect of the toner, and low-quality recording paper that impairs the image of plain paper Will be. Further, the fixability is poor, and the image portion is easily peeled off only by rubbing with a hand or the like, and the recording storability is poor. Furthermore, there is a migration property, and there is the same problem as in the case described in JP-A-2-55195.

JP-A-6-219068 discloses a recording paper that can be reproduced by applying or impregnating a recording paper with a heat-denatured material, for example, a fluorine-containing acrylate material, which becomes inferior in adhesion to an image forming material when heated. Is disclosed. In addition, it is specified that fixing of an image is difficult by heat and pressure, and here, pressure is used. The recording paper in this case is a thermal transfer paper, which is a special paper having higher smoothness than plain paper from the viewpoints of glossiness, texture, writability, and the like. Therefore, this technique relates to special paper.

Further, since the fluorine-containing acrylate material does not have good adhesion to the thermal transfer recording paper as a base material, it has a migration property, and the paper feed roller and the recording paper become slippery when the paper is passed through the copying machine. In some cases, printing failure may occur due to a recording paper jam or misalignment. For this reason, it is necessary to create a region on the thermal transfer recording paper in which the heat-denaturable material is not applied or impregnated, which causes a problem that the production of the recording paper is not easy and the production cost is high. In addition, the electrophotographic copying machine generally used today applies heat and pressure to the recording paper to fix the image forming material.
If it can be used only in the case of pressure image fixing, there is a drawback that the versatility is too low.

JP-A-6-208318, JP-A-6-2
50569, JP-A-6-250570, JP-A-6-250570
266264, JP-A-6-273966, JP-A-6-273966
JP-A-289643 and JP-A-7-13383, for example, impregnate a recording medium such as paper on which an image is recorded by dipping or spraying in a deinking agent (surfactant or the like) solution, or use a water-soluble polymer. A solution in which a surfactant is mixed with a solution in which the surfactant is mixed, is applied onto the recording medium, and then penetrated or penetrated from the back side. Then, the hydrophobic image forming material on the recording medium and the image exfoliating body are adhered by heating and peeled. There is disclosed a method for causing this to occur.

However, in order to remove the hydrophobic image-forming material from untreated ordinary paper by these methods, it is possible to use a character image. However, it is possible to remove a solid image in which an image is formed over the entire surface of a recording medium. In this case, the surfactant hardly penetrates into the image forming material and does not reach the surface of the recording medium through the image forming material, so that the effect of enhancing the releasability between the recording medium paper and the image forming material is obtained. I can't get it. As a result, when the solid image is peeled, the surface of the recording medium is peeled together with the paper fibers, and the paper surface is damaged. Also,
There is a problem that it is difficult to apply the surfactant to the image peeling process of the double-sided copied paper or the like when the surfactant is penetrated from the back side. Further, any of the above techniques, due to poor image peelability, by an image forming apparatus using an electrophotographic method and a thermal transfer method, when forming a color image that is printed as a solid image on the entire surface, Reproduction was not easy.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances in the prior art, and has been made to solve the above problems. That is, an object of the present invention is to provide a method and an apparatus for reproducing a reproducible image recording sheet which does not impair the image of plain paper and which can be carried out on site by an individual without relying on a specialized trader to recycle used paper. is there. Another object of the present invention is to
A method and apparatus for reproducing a reproducible image recording sheet that enables removal of the image forming material without damaging the surface of the image recording sheet while maintaining good fixability of the image forming material to the image recording sheet Is to provide. Still another object of the present invention is to provide an image recording paper reproducing method and an apparatus for easily reproducing not only a solid image of the entire surface formed by an image forming apparatus but also a color image. It is in. Still another object of the present invention is to provide a reproducing apparatus that can be effectively used in an office space and that can be applied to an apparatus that combines an image forming apparatus and an image removing apparatus.

[0012]

Means for Solving the Problems In order to achieve the above object, the present inventors have made intensive studies on the reproduction of reproducible image recording paper, and have completed the present invention. That is, the method of reproducing a reproducible image recording sheet of the present invention is applied to an image recording sheet having an image formed by an image forming material containing a heat-fusible component on the surface of the image recording sheet to which the releasability has been imparted. A peeling liquid containing at least water is applied, and the image forming material is pressed against an opposite peeling member while being heated, and the image forming material is transferred from the image recording paper to the peeling member to reproduce the image recording paper. I do.

In the present invention, the image recording paper provided with the releasing property is obtained by applying or impregnating a liquid composition containing a curable silicone compound which directly reacts with a fiber, followed by drying. . As the liquid composition containing the curable silicone compound, a liquid composition further containing a modified silicone oil or a methyl hydrogen silicone oil having a reactive group in a molecule is used. The curable silicon compound is a fluorine-containing silicon compound,
A modified silicone oil having a group containing at least one compound selected from the group consisting of an isocyanate silane compound, an alkoxysilane compound, a silane coupling agent, and a silane compound having a SiH group is used; As the modified silicone oil having a reactive group, at least one silicone oil selected from the group consisting of a silanol-modified silicone oil, a carboxy-modified silicone oil and an amino-modified silicone oil is used.

In the present invention, the water-containing stripping solution contains at least one selected from the group consisting of a surfactant and an oily release agent dispersible in water. By adopting the above configuration, the image forming material (such as ink) is favorably fixed to the recording surface, and the image forming material is smoothly separated from the recording surface.

The reproducing apparatus for reproducing the image recording sheet by transferring the image forming material of the present invention from the image recording sheet to the peeling member includes a heat-meltable component on the surface of the image recording sheet provided with the releasability. Means for applying a release liquid containing at least water to an image recording sheet having an image formed by an image forming material including: means for heating the image forming material; means for pressing the image recording sheet against the release member; It is characterized by having.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The reproducible image recording paper reproducing method of the present invention capable of forming and removing an image will now be described in more detail. The image recording paper used in the present invention has a functional group, for example, a hydroxyl group, a carboxyl group, has a composition containing a curable silicon compound that directly reacts with the functional group, and is dried. In this method, the functional group of the image recording paper is directly reacted with the curable silicone compound to chemically bond the functional group to the image recording paper, thereby giving a releasability. According to this aspect, a thin film is formed on the surface of the image recording sheet, and the film itself does not separate from the image recording sheet while having a releasing property to the image forming material. That is, there is no transferability to another. Therefore, in spite of the thin film, it is possible to obtain a reproducible image recording sheet which not only facilitates sufficient peeling of the image forming material but also semipermanently does not impair its effect.

Regarding the pulp used in the image recording paper of the present invention, examples of the chemical pulp include hardwood bleached kraft pulp, hardwood bleached kraft pulp, hardwood bleached sulphite pulp, softwood bleached kraft pulp, softwood unbleached kraft pulp, and softwood Virgin bleached chemical pulp, which is obtained by chemically treating wood and other fiber materials such as bleached sulfite pulp and soda pulp and passing through a bleaching process, is preferred.
Further, those having high whiteness are preferable. Further, as used paper pulp, for example, used paper that is dissociated from unprinted used paper such as cut-off, waste paper, width-reduced upper white, special white, medium white, white loss, etc. generated in bookbinding, printing plants, cutting shops, etc. For pulp, high quality paper, high quality coated paper, medium quality paper, medium quality coated paper, paper change, etc.
Printing plates such as planographic, letterpress, intaglio, electrophotographic, heat-sensitive, thermal transfer, pressure-sensitive recording paper, ink-jet recording, waste paper printed with carbon paper, etc., waste paper written with water-based, oil-based ink or pencil, and After dissociating waste paper such as newspaper waste paper, waste paper pulp etc. obtained by deinking each of these waste papers by an optimal method are mentioned, and lithographically printed waste paper pulp which is relatively easy to deink is preferable, and among them, furthermore, Recycled paper pulp having high whiteness and containing few impurities is preferable.

The curable silicone compound, which is a film material that reacts with the functional groups of the image recording paper, is provided on the image recording paper made with the above pulp, and directly contacts the cellulose, which is the main component of the pulp fiber, particularly its hydroxyl group. React chemically. This prevents unnecessary penetration of the image forming material melted at the time of fixing the image, and has an effect of reducing the remaining amount of the image forming material at the time of image peeling. In addition, as a method of reducing the remaining amount of the image forming material at the time of image peeling, fine particles may be embedded in a portion of the paper surface so as to prevent the image forming material from entering irregularities or holes.

Examples of the material having good releasability include a fluorine-based material, a fluorine-based oil, a silicone-based material, and a silicone-based oil. In consideration of the running property and the like, a curable silicone compound which directly reacts with and binds to the pulp fiber is preferable.

In the present invention, the curable silicon compound means a silane compound having a curable functional group. Typical curable silicon compounds include a fluorine-containing silicon compound, an isocyanate silane compound, an alkoxysilane compound, a silane coupling agent, a silane compound having a SiH group, and a modified silicone oil having a reactive group in a molecule. However, if these compounds contain a reactive chlorine atom, the image recording paper will be attacked by hydrochloric acid derived from the chlorine atom, making it difficult to handle such as storage. Therefore, it is preferable that these compounds do not contain a chlorine atom. These compounds have high reactivity with inorganic fine particles such as talc, clay (kaolin) and calcium carbonate, which are usually contained in image recording paper, and are cured together with the pulp fiber and also serve to fix the paper.

Examples of the fluorine-containing silicon compound include CF ₃ (CH ₂ ) ₂ Si (OCH ₃ ) ₃ and C ₆ F ₁₃
C ₂ H ₄ Si (OCH ₃ ) ₃ , C ₇ F ₁₅ CONH (CH
_{2) 3 Si (OC 2 H} 5) 3, C 8 F 17 C 2 H 4 Si
(OCH ₃ ) ₃ , C ₈ F ₁₇ C ₂ H ₄ SiCH ₃ (OCH _3
3 ) ₂ , C ₈ F ₁₇ C ₂ H ₄ Si [ON = C (CH ₃ )
(C ₂ H ₅ )] ₃ , C ₉ F ₁₉ C ₂ H ₄ Si (OCH ₃ )
₃ , C ₉ F ₁₉ C ₂ H ₄ Si (NCO) ₃ , (NCO) ₃
SiC ₂ H ₄ C ₆ F ₁₂ C ₂ H ₄ Si (NCO) ₃ , C _{9
F 19 C 2 H 4 Si (} C 2 H 5) (OCH 3) 2, (CH
_{3 O) 3 SiC 2 H 4} C 8 F 16 C 2 H 4 Si (OC
H ₃ ) ₃ , (CH ₃ O) ₂ (CH ₃ ) SiC ₉ F ₁₈ C ₂
Examples include H ₄ Si (CH ₃ ) (CH ₃ O) ₂ , and hydrolysates or partial condensates of these compounds.

As the isocyanate silane compound,
(CH ₃ ) ₃ SiNCO, (CH ₃ ) ₂ Si (NCO)
₂ , CH ₃ Si (NCO) ₃ , vinylsilyl triisocyanate, C ₆ H ₅ Si (NCO) ₃ , Si (NCO)
₄ , C ₂ H ₅ OSi (NCO) ₃ , C ₈ H ₁₇ Si (NC
_{O) 3, C 18 H 37} Si (NCO) 3, (NCO) 3 Si
Examples thereof include silane compounds such as C ₂ H ₄ Si (NCO) ₃ , and hydrolysates or partial condensates of these silane compounds.

Examples of the alkoxysilane compound and the silane compound having a SiH group include Si (OCH ₃ ) ₄ , CH
_{3 Si (OCH 3) 3,} HSi (OCH 3) 3, (CH
₃ ) ₂ Si (OCH ₃ ) ₂ , CH ₃ SiH (OCH ₃ )
₂ , C ₆ H ₅ Si (OCH ₃ ) ₃ , Si (OC ₂ H ₅ )
₄ , CH ₃ Si (OC ₂ H ₅ ) ₃ , (CH ₃ ) ₂ Si
(OC ₂ H ₅ ) ₂ , H ₂ Si (OC ₂ H ₅ ) ₂ , C ₆ H
_{5 Si (OC 2 H 5)} 3, (CH 3) 2 CHCH 2 Si
(OCH ₃ ) ₃ , CH ₃ (CH ₂ ) ₅ Si (OCH ₃ )
₃ , CH ₃ (CH ₂ ) ₇ Si (OC ₂ H ₅ ) ₃ , CH ₃
(CH ₂ ) ₁₁ Si (OC ₂ H ₅ ) ₃ , CH ₃ (CH ₂ )
₁₅ Si (OC ₂ H ₅ ) ₃ , CH ₃ (CH ₂ ) ₁₇ Si (O
Examples thereof include silane compounds such as C ₂ H ₅ ) ₃ , and hydrolysates or partial condensates of these silane compounds.

Examples of the silane coupling agent include vinyl silanes such as vinyl tris (β-methoxyethoxy) silane, vinyl triethoxy silane and vinyl trimethoxy silane, acrylic silanes such as γ-methacryloxy propyl trimethoxy silane and β- (3 Epoxysilanes such as, 4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane and γ-glycidoxypropylmethyldiethoxysilane;
β- (aminoethyl) -γ-aminopropyltrimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxy And aminosilanes such as silane.

In the present invention, the curable silicon compound is not limited to one kind of compound alone, and it is desirable to use a mixture of a plurality of compounds or a partial hydrolyzate thereof.

The modified silicone oil having a reactive group in a molecule used in combination with the curable silicone compound includes:
Silanol-modified silicone oil, carboxy-modified silicone oil, amino-modified silicone oil, epoxy-modified silicone oil, carbinol-modified silicone oil, methacryl-modified silicone oil, mercapto-modified silicone oil, and phenol-modified silicone oil. Among these, silanol-modified silicone oil, carboxy-modified silicone oil, and amino-modified silicone oil are preferable because they are colorless and transparent, and since the image forming paper is pulp (paper), it can be used without discoloration. Further, other modified silicone oils can be preferably used in the present invention as long as they have no problem of coloring or discoloration.

The addition ratio of the modified silicone oil or methyl hydrogen silicone oil to the curable silicone compound can be arbitrarily set according to the purpose. However, the addition ratio of the modified silicone oil or methyl hydrogen silicone oil to the curable silicone compound is 1 to 40% by weight.
Is preferably within the range. When the amount of the modified silicone oil is too small, it becomes difficult to peel off the fixed image forming material, and when the amount is too large, the image recording paper exhibits transparency, or the fixing property of the image forming material deteriorates, A sticky feeling occurs.

The above-described modified silicone oil or hydrogen silicone oil interacts with the curable silicone compound to contribute to improvement of the releasability of the film from the image forming material and improvement of the durability of the film. Although the detailed mechanism is unknown, the modified silicone oil chain or hydrogen silicone oil chain is intricately entangled with the curable silicone compound, and the micro-distribution of various organic groups present on the surface, particularly polar groups and ionic bonds. As a result, it is considered that the control is performed and an optimum surface structure for peeling the image forming material is achieved. In addition, the entanglement of molecules between the selected compounds contributes to further increasing the durability.

In a combination of a carboxyl group and an isocyanate silane compound, the polarity of the carboxyl group forms an electrical interaction with the isocyanate silane compound, and thus receives an external energy action such as heat or light. However, it is considered that the effect is obtained that the entanglement is not easily released, and thus the effect is considered to be maintained for a long time.

The viscosity of the modified silicone oil or hydrogen silicone oil must be determined in consideration of the combination with the curable silicone compound.
It is preferable to use 10,000 cSt (centistokes). By using the above materials, it is possible to form an image-forming material peelable film. Further, in addition to the curable silicon compound, silica gel, SiO ₂ , silicone resin particles and the like may be mixed.

In the liquid composition for forming a film having releasability, other additives such as aluminum compound, titanium compound, zirconium compound, fluorine compound, etc. which do not impair the function of the film may be used. It can be contained in consideration of fixing control of the forming material, control of writing properties, control of reactivity with the base material, and the like. As specific examples, aluminum isopropylate, aluminum se
c-butylate, aluminum tert-butylate,
Tetra-iso-propyl titanate, tetra-n-butyl titanate, tetra-iso-butyl titanate,
Tetra-sec-butyl titanate, tetra-tert
-Butyl titanate, tetra-n-pentyl titanate, tetra-iso-pentyl titanate, tetra-n
-Hexyl titanate, tetra-n-heptyl titanate, tetra-n-octyl titanate, tetra-iso
-Octyl titanate, tetra-n-nonyl titanate, tetramethyl zirconate, tetraethyl zirconate, tetra-iso-propyl zirconate, tetra-n-propyl zirconate, tetra-n-butyl zirconate, tetra-iso-butyl zirconate , Tetra-tert-butyl zirconate, mono-sec-butoxyaluminum diisopropylate, ethyl acetoacetate aluminum diisopropylate, di-n-
Butoxyaluminum monoethylacetoacetate, aluminum di-n-butoxide methylacetoacetate, aluminum diisobutoxide monomethylacetoacetate, aluminum di-sec-butoxide monoethylacetoacetate, aluminum di-iso-
Propoxide monoethyl acetoacetate, aluminum trisacetylacetonate, aluminum di-i
So-propoxide monoacetylacetonate, aluminum monoacetylacetonate bis (ethylacetoacetate), aluminum tris (ethylacetoacetate), cyclic aluminum oxide acylate compound, di-iso-propoxytitanium bis (acetylacetonate) -N-butoxytitanium bis (acetylacetonate), tetraoctylene glycol titanate, tetrakisacetylacetone zirconate and the like. Further, titanium oxide, aluminum oxide, zirconium oxide, barium titanate and the like can also be mentioned.

Examples of the fluorine compound include fluoroolefin resins, specifically, polymers such as tetrafluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and perfluoropropylvinyl ether. You may mix and use. Further, as a fluorine compound, X-CF ₂ (OC ₂
Perfluoropolyether represented by F ₄ ) _p (OCH ₂ ) _q OCF ₂ -X, and specifically, X is OCN
-C ₆ H ₃ (CH ₃₎ isocyanate-modified compounds represented by NHCO-, carboxyl group-modified products represented by _{-COOH, -CH 2 OH, -CF 2} -CH 2 ((OCH 2 CH
₂ ) _n ) alcohol-modified product represented by OH or the like, -COO
An ester-modified product represented by R (R is an alkyl group, an aryl group, or the like) is also included.

As a method for applying or impregnating a film using the above liquid composition, a blade coating method, a Meyer bar coating method, a spray coating method, a dip coating method, a bead coating method, an air knife coating method can be used. A commonly used method such as a curtain coating method, a rod bar coating method, and a roll coating method is employed. Drying at the time of forming these films may be air-drying, but heat drying further increases the releasability from the image forming material.
The reason is thought to be that components reacted with pulp fibers of the image recording paper are arranged or oriented, but it is not clear.
Heat drying, put in the oven, through the oven,
Alternatively, a commonly used method such as contact with a heating roller is employed.

As described above, the method of removing the image forming material once formed as an image from the image recording material provided with the releasability to the image forming material is as follows. It is theoretically preferable that the operation is the same as the method. For example, in a thermal transfer method or an electrophotographic method, an image forming material is fixed on an image recording medium sheet using heat or the like to form an image, but the image fixed once is heated again to obtain an image. This is because the image forming material on the recording medium is melted and easily removed from the image recording medium. Therefore, if the fixing device in the image forming apparatus can also be used as the peeling device, there is an advantage that the image forming apparatus itself can also be used as the image removing device without having to separately prepare a special device. Also, compared to preparing a separate peeling device, the vacant space can be effectively used.

In the present invention, as a means for removing the image forming material, at least water is contained in order to weaken the binding between the paper fiber and the image forming material and to improve the permeability into the image recording paper. It is necessary to apply a release liquid (hereinafter, referred to as “aqueous release liquid”) to the image recording paper. However, it is desirable not to include a component that dissolves the image forming material or dissolves the coloring component thereof. This is because the dissolved material permeates the paper or the fibers, and makes it difficult to remove these materials. Further, those which greatly lower the volatility of the aqueous stripping solution or compositions which lower the volatility are not preferred because it takes time and effort to dry the image recording paper. further,
Toxic substances, those which are deeply colored in the aqueous stripping solution, those which smell, and the like are not preferable for use.

In the present invention, since the surface of the image recording paper has been subjected to the release treatment, the gap where the hydrophobic image forming material starts to peel off on the surface of the image recording paper when heated compared to the untreated one. In, the aqueous release liquid is easy to enter, further, when peeling the image forming material from the image recording paper, the image forming material that is likely to remain between the paper fibers,
The above-mentioned aqueous stripping liquid plays a role of embossing. Further, if necessary, a removal method for accelerating and embossing the image forming material using physical action, for example, ultrasonic vibration, may be used together with the application of the aqueous release liquid.

In the present invention, the aqueous stripper preferably contains at least one selected from the group consisting of a surfactant and an oily release agent dispersible in water. The surfactant has an action of rapidly penetrating between hydrophobic image forming materials and into image recording paper. In the present invention, since the image recording paper provided with the releasability is used, it is only necessary to raise the slightly remaining image forming material. Therefore, the effect is sufficiently exhibited by adding a small amount of the surfactant.

A great variety of surfactants are known, and anionic (anionic) surfactants, cationic (cationic) surfactants, nonionic (nonionic) surfactants, amphoteric surfactants, and the like. Surfactants and the like can be used, but these types are not limited, and they can be used alone or in combination of two or more.

The oily release agent dispersible in water is
They exhibit the same action as surfactants, and need only be added in very small amounts. Usually, as an emulsion type, many are dispersed in an aqueous release liquid, and silicone-based,
An oily release agent such as a fluorine-based release agent can be used without any limitation, and more specifically, polyether-modified silicone oil, perfluoropolyether and the like can be mentioned.

The aqueous stripper may further contain a higher fatty acid ester or its alkyl ether. The higher fatty acid ester means an ester obtained by reacting various higher fatty acids with a compound having an OH group. Fatty acids include saturated and unsaturated fatty acids, for example, lauric acid, stearic acid, oleic acid, ricinoleic acid, linoleic acid, myristic acid, abietic acid, erucic acid, rosin acid, coconut oil, linseed oil, castor oil , Soybean oil, rapeseed oil,
Sunflower oil and the like can be exemplified, and these may be used as a mixture. Compounds having an OH group include those having 2 to 2 carbon atoms.
4 unsaturated, cyclic and alcoholic, 2 to 3 carbon atoms
Up to two polyhydric alcohols, glycols, cellosolves and the like can be exemplified, and can be esterified by a known method. Furthermore, they can be alkyl etherified.

The components contained in the aqueous stripping solution described above are used as the main components of a deinking (deinking) agent. Usually, used paper such as newspapers, magazines, and copy paper is used for a flotation method or the like. Things. Therefore, if it is developed and sold as a deinking agent, it can be used without any particular problem.

Next, a method and apparatus for reproducing image recording paper of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing one embodiment of a recording medium reproducing apparatus for performing the image recording paper reproducing method of the present invention, and FIG. 2 is a schematic configuration diagram showing an operation mode of this device. is there. In FIG. 1, a pair of transport rollers 1 and 2 are provided, and a transport belt 4 is stretched between the transport roller 2 and the pressure roller 3. An alumite-treated peeling roller 5 is disposed above the pressure roller 3 at predetermined intervals so as to face the pressure roller 3. A heater 6 is provided between the transport roller 1 and the peeling roller 5 and above the transport belt 4, and further thereon,
A separated material collection box 8 is arranged via a heat insulating material 7. A pair of small-diameter transport rollers 9 and 10 are disposed near the lower end of the peeling roller 5, and a strip finger 11 is provided between the transport roller 10 and the peeling roller 5 at the tip thereof. The cleaning blade 12 is provided on the upper end side of the peeling roller 5. Further, a stripper application unit is provided upstream of the transport rollers 1 and 2 as a means for applying the aqueous stripper. The stripping liquid application unit includes a pair of application rollers 16 and 17,
The peeling liquid 15, which is composed of the liquid supply rollers 18 and 19 and the liquid storage tanks 20 and 21, and contains at least water contained in the liquid storage tanks 20 and 21, is supplied to the application rollers 16 and 17 by the liquid supply rollers 18 and 19. It is supposed to be.

In this apparatus, the image recording paper 1 having an image formed with the toner 14 and having releasability is provided.
The stripper 15 supplied to the coating roller from the liquid storage tank via the liquid supply roller is applied to the coating roller 3 by the coating roller, and permeates the image recording paper 13. Then, the image recording paper 13
Transport belt 4 via a pair of transport rollers 1 and 2
Transported by At this time, the heater 6 is heated in advance (for example, to about 105 ° C.), the image recording paper 13 soaked is heated from the upper side, the toner 14 on the image recording paper 13 is melted, and Stand out. In this state, it reaches between the pressure roller 3 and the peeling roller 5 and is pressed by these rollers. In this case, if the release agent roller 5 is also heated, the image recording paper 1
No. 3 is preferable because it can be further dried.

The toner 14 heated and melted as described above adheres to the surface of the peeling roller 5 and is separated from the image recording paper 13 by the strip finger 11. With the rotation of the peeling roller 5, the toner 14 in the molten state is gradually cooled, and the cleaning blade 1 is cooled.
2, the image recording paper 13 is regenerated by a pair of conveying rollers 9 and 1
Retrieved via 0. The peeled toner 14 is collected in the separated material collection box 8. In this case, since the heat insulating material 7 is interposed between the separated material collecting box 8 and the heater 6, the toner 14 can be easily taken out without sticking in the separated material collecting box 8, and it is necessary to Discarded accordingly.

FIG. 3 is a view showing an example in which a reproducing apparatus is built in a copying machine, and FIGS. 4 and 5 are explanatory views showing operating states in a stripper applying unit, respectively.
7A and 7B are explanatory diagrams each showing an operation state in the fixing unit 30. FIG. In the apparatus of FIG. 3, instead of a fixing unit installed in a normal copying machine body,
The fixing unit described below is mounted. Further, the copier body is newly provided with a stripping liquid application unit in a step before the fixing unit.

The fixing unit 30 has a heat roller 31 and a pressure roller 32. These rollers are provided so that the distance between the peripheral surfaces thereof is variable. Material / heat roller 3 having anodized aluminum to form an aluminum anodic oxide film
A pressure roller 34 is disposed in contact with the peripheral surface of the roller 3, and a metal blade 35 is disposed on the upper step side of the heat roller 33, which also serves as a peeling material, in a state in which the tip of the metal blade 35 slides. I have. Although not particularly shown, between the heat roller 31 and the pressure roller 32 and between the separation material heat roller 33 and the pressure roller 34 by the mode switching means, the state shown in FIG. 6 or the state shown in FIG. Thus, the gap between the rollers is adjustable.

The stripping liquid application unit 50 includes a liquid storage tank 5
The stripping liquid 53 is contained in the coating liquids 1 and 52, from which the stripping liquid is sent to a pair of application rollers 56 and 57 through a liquid supply roller 54 or a liquid supply belt 55. These application rollers are provided so that the distance between the peripheral surfaces thereof can be varied. Between the application rollers, partition plates 58 and 59 that can be changed (position can be moved) according to the change are arranged. In the case of this figure, coating can be performed on both sides of the image recording paper, but only one of them may be used, and the method of supplying the coating liquid is not limited to this. Although not particularly shown, the position switching between the application rollers and the partition plate can be performed by the mode switching means, and the gap between the rollers is changed as shown in the state shown in FIG. 4 or the state shown in FIG. In addition, the position of the partition plate can be adjusted. In addition, the paper supply section 38 is provided with a reproduction tray 39 for storing recording paper on which toner removal reproduction is to be performed.

In FIG. 3, the other main components are substantially the same as those of the conventional copying machine. Reference numeral 41 denotes a photosensitive member, reference numeral 42 denotes an optical system control unit, reference numeral 43 denotes a charger, reference numeral 37 denotes a developing device, and reference numeral 40 denotes a developing device. Denotes a transfer device, 44 denotes a cleaner, and 45 denotes a transport belt.

Next, a copying operation on an image recording sheet and a reproducing operation of the image recording sheet on which an image is formed in the copying machine will be described. First, in the copy mode, the photoconductor 41
Is uniformly applied to the surface by the charger 43, the image information is exposed through the optical control system 42, and an electrostatic latent image corresponding to the exposure is formed. Next, toner is supplied from the developing device 37 to the electrostatic latent image on the surface of the photoconductor 41, and the electrostatic latent image is visualized. Next, the image is transferred onto an image recording sheet having a releasability on the surface by the transfer device 40, and the transfer belt 45 is used.
And the fixing unit 3
It is transported within 0. At this time, the stripping liquid application unit does not operate, and the partition plates 58 and 59 are provided between the application rollers 56 and 57, as shown in FIG. 4, and the image recording paper merely passes through the space. It is. In the fixing unit 30, as shown in FIG. 6, the heat roller 31 and the pressure roller 32 are set in pressure contact with each other, and the image recording paper having the toner image adhered thereto is fixed by heat and pressure. The heat roller 33 and the pressure roller 34 are also separated from each other, and the fixed image recording sheet is discharged from the fixing unit 30 to the outside.

Next, the operation of reproducing the image recording paper on which the image is formed as described above will be described. The image recording paper on which the image is formed is stored in the tray 39 for reproduction, and the release liquid application unit 50 and the fixing unit 30 are operated by the operation in the switching mode. In the stripper applying unit, the partition plate and the applying roller are set to the state shown in FIG. 5, and the rollers in the fixing unit 30 are set to the state shown in FIG. In this mode, the image recording paper is conveyed to the release liquid applying unit without any processing. In the release liquid application unit, as shown in FIG. 5, a pair of application rollers 56 and 57 are in contact with each other, and the image recording paper passes therebetween, the release liquid is applied to the image recording paper, and is conveyed to the fixing unit. You. In the fixing unit 30, as shown in FIG. 7, the heat roller 31 and the pressure roller 32 are separated from each other, and the image recording paper passes through the gap between these rollers 31, 32 and the separation material roller 33 and the pressure roller. And 34.

The peeling material dual-purpose roller 33 is heated,
The image recording paper is composed of a release material roller 33 and a pressure roller 34.
The toner in the image portion is melted and adheres to the release material / combination roller 33,
6 separates from the image recording paper. Thus, the image recording paper is reproduced. As described above, this reproducing apparatus can switch between the normal copying process and the reproducing process by the switching mode means only by adding a stripping liquid application unit to a normal copying machine and modifying the fixing unit and the like.

In the above-described embodiment, an example of a reproducing apparatus for monochromatic color copying has been described. However, the reproducing apparatus of the present invention can be applied to a multicolor copying machine as shown in FIG. It can be employed as a structure having a coating unit addition and a modified fixing device. In addition,
In FIG. 8, reference numeral 46 denotes a developing unit which accommodates developers of four colors, and 47 denotes a transfer drum.
Other symbols refer to the same components as in FIG.

[0053]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto. In the examples and comparative examples, “parts” means parts by weight. Example 1 In a flask in which a stirrer was set, as a fluorine-containing silicon compound, 16.4 parts of a compound of the following formula (I), 5 parts of a compound of the following formula (II), and tetramethoxysilane5.
6 parts, isopropyl alcohol 600 as solvent
Parts, 1400 parts of 2-methyl-2-propanol. Next, 2.2 parts of aluminum trisacetylacetonate as an organic aluminum compound was added, and the mixture was stirred well, and 6.7 parts of a 1% aqueous hydrochloric acid solution was gradually added dropwise thereto. After the completion of the dropwise addition, the composition was kept at 25 ° C. and left for 7 days to prepare a composition solution.

Embedded image The composition solution obtained as described above is further modified as a modified silicone oil with a silanol-modified dimethylsiloxane having a hydroxyl group at one molecular end (manufactured by Toshiba Silicon Corporation:
XF3968) was mixed in two parts to obtain a coating solution. This is impregnated into X-Rox paper A4 size (manufactured by Fuji Xerox Co., Ltd.), air-dried for 10 minutes, and then heat-dried in an oven at 115 ° C. for 60 minutes to give a reproducible image recording paper having a surface releasability. Produced. A color image including a character and a solid image was fixed on the image recording paper using an electrophotographic apparatus (A color 635: manufactured by Fuji Xerox Co., Ltd.).

In reproducing the image recording paper having the recorded image, it was inserted into an apparatus as shown in FIG. Distilled water was used as the stripping solution, and the solution was passed between the application rollers, so that the recording sheet was soaked with the stripping solution. Here is about 0.5 per sheet
g. Thereafter, when the image recording paper is transported inside by the transport rollers and the transport belt, the
The image was heated from the top of the image by a heater heated to 05 ° C., so that the toner was softened and the distilled water became a vapor (steam). The image recording paper and the toner were separated by a strip finger while being pressed against the release material roller whose surface was subjected to alumite treatment (FIG. 2). The ratio of the image density after peeling of the residual toner after toner peeling to the image density before peeling (hereinafter abbreviated as “OD ratio”) was evaluated as an index (OD ratio = image density after peeling / image before peeling). concentration).
It is desirable that the image density at which the residual toner does not matter is 0.08 or less in terms of the OD ratio. However, in the reproduced image recording paper, the average is 0.04, which is a sufficient result. This image recording sheet was repeatedly reproduced 10 times, and the OD ratio of the residual toner after image peeling was 0.08, and the reproduction was sufficiently repeated.

Comparative Example 1 The same evaluation was performed except that the stripping solution in Example 1 was not used. However, the OD ratio of the residual toner after the toner was stripped was 0.08 on average, and the specifications were already reduced. Some parts did not meet. Image fixing / peeling / reproduction was repeatedly performed by this method. The OD ratio of the residual toner after the image peeling was 0.10 on the second average and 0.32 on the tenth average.

Comparative Example 2 In Example 1, evaluation was made in the same manner as in Example 1 except that untreated paper whose surface was not subjected to a release treatment was used. I couldn't.

Example 2 Example 1 was repeated except that the stripping solution in Example 1 was changed to a 1% aqueous solution in which polyoxyethylene nonylphenyl ether, which is a nonionic surfactant, and ethanol were mixed at a ratio of 1: 1. The processing was performed in the same manner as described above, and the evaluation was performed in the same manner. As a result, the OD ratio of the residual toner after peeling off the toner was 0.025 on average. Further, image fixing / peeling / reproduction was repeatedly performed by this method, and the OD ratio of the residual toner after image peeling was 0.06 on average at the 210th time, and the effect was further improved as compared with Example 1.

Example 3 The stripping solution of Example 1 was mixed with a nonionic surfactant, polyoxyethylene dialkyl ether, polyoxyethylene polyoxypropylene fatty acid ester, and ethanol at a ratio of 1: 1: 1. Except having changed into 1.5% aqueous solution, it processed similarly to Example 1 and evaluated similarly. As a result, the OD ratio of the remaining toner after peeling off the toner was 0.03 on average. Further, image fixing / peeling / reproduction was repeatedly performed by this method. The OD ratio of the residual toner after image peeling was 0.07 on average at the tenth time, and the effect was higher than that of Example 1.

Example 4 Example 1 was repeated except that the stripping solution used in Example 1 was changed to a 1% aqueous solution of perfluoropolyether (Fonpurin FE20, manufactured by Ausimont), which is a fluorine-based oil.
And the same evaluation was performed. As a result, the OD ratio of the residual toner after peeling off the toner was 0.02 on average. Further, image fixing / peeling / reproduction was repeatedly performed by this method. The OD ratio of the residual toner after the image peeling was 0.05 on the tenth average, and the effect was higher than that of Example 1.

Example 5 Example 1 was repeated except that the stripping solution in Example 1 was changed to a 1% aqueous solution of perfluoropolyether (Fonpurin EM04: manufactured by Ausimont), which is a fluorine-based oil.
And the same evaluation was performed. As a result, the OD ratio of the residual toner after peeling off the toner was 0.02 on average. Further, image fixing / peeling / reproduction was repeatedly performed by this method. The OD ratio of the residual toner after the image peeling was 0.05 on the tenth average, and the effect was higher than that of Example 1.

Example 6 The stripping solution in Example 1 was replaced with a silicone oil (KM7
(3: Shin-Etsu Chemical Co., Ltd.), except that the treatment was carried out in the same manner as in Example 1 except that the aqueous solution was changed to a 1% aqueous solution. As a result, the OD ratio of the residual toner after peeling off the toner was 0.1% on average.
04. Further, the image fixing / peeling / reproduction was repeatedly performed by this method. The OD ratio of the residual toner after the image peeling was 0.08 on average at the tenth time, and the effect was higher than that of Example 1.

Example 7 Processing was performed in the same manner as in Example 1 except that the stripping solution in Example 1 was changed to a 0.5% aqueous solution of a fluorine silicon surfactant (X-70-092: manufactured by Shin-Etsu Chemical Co., Ltd.). Then, the same evaluation was performed. As a result, O
The D ratio was 0.04 on average. Further, the image fixing / peeling reproduction was repeatedly performed by this method. The OD ratio of the residual toner after the image peeling was 0.06 on average at the tenth time, and the effect was higher than that of Example 1.

Example 8 A copy machine, Vibase 500 (manufactured by Fuji Xerox Co., Ltd.) was modified as follows. The fixing unit mounted on the copier body was taken out, and a pair of a heat roller and a pressure roller, which are also used as a release material, was further added as shown in FIG. The surface of the heat roller which also serves as a release material was used in which the surface of the heat roller was treated with an anodic oxide film of aluminum and further treated with a heat-fusible material. These two roller pairs are variable and do not operate at the same time. A normal roller pair is operated at the time of fixing (FIG. 6), and a newly added roller pair is operated at the time of peeling (FIG. 7). . The modified fixing unit was mounted on a copying machine. Further, a release liquid applying unit was newly installed in a portion corresponding to a pre-process of the fixing unit.

In this copying apparatus, in a normal copying mode, the stripping solution application unit does not operate, and the pair of application rolls are separated from each other as shown in FIG.
The paper passes between these partition plates and is transported to the fixing unit. Further, at the time of peeling, the partition plate was moved so that each of the application rolls came into contact (FIG. 5). Also, in the regeneration mode, the release liquid application unit changes from the state of FIG. 4 to the state of FIG. 5, the fixing unit changes from the state of FIG. 6 to the state of FIG. In addition to the tray to be used, image recording paper to be reproduced as blank paper is fed from a newly installed paper tray.

As an isocyanate silane compound, 60 parts of methylsilyl triisocyanate, 20 parts of phenylsilyl triisocyanate, and 8 parts of monooctyl acid phosphate, 2400 parts of ethyl acetate, and 100 parts of diglyme as a curing reaction modifier were mixed by stirring. A coating solution was obtained. This was impregnated in X paper X paper A4 size (manufactured by Fuji Xerox Co., Ltd.) in the same manner as in Example 1, air-dried for 5 minutes, and then heat-dried in an oven at 120 ° C. for 1 minute to give the surface releasability. A reproducible image recording paper was produced.

When the image recording paper is discharged from the ordinary tray of the modified copying machine, the image area is exposed on the photosensitive member in accordance with the ordinary copying machine process to form an electrostatic latent image. The latent image was developed with black toner. The developed toner was transferred onto the conveyed image recording paper, and was conveyed to the fixing unit in the state shown in FIG. 6 to be fixed. FIG. 3 shows the overall layout configuration of the modified copier. Next, reproduction evaluation of the image recording paper was performed using this modified copier. The stripping solution used in Example 3 was used and supplied to the liquid storage tank in the stripping solution application unit. The image recording paper on which the above-described image was formed was set on the toner removal / reproduction tray shown in FIG. 3, the reproduction mode was set, and the copying machine was started. As a result, the image recording paper was reproduced finely and discharged from the copying machine.
Evaluation was performed in the same manner as in Example 1. As a result, the OD ratio of the residual toner after peeling off the toner was 0.02 on average.
Even when the reproduction was repeated 0 times, the OD ratio was 0.05 and the reproduction was sufficiently repeated.

Example 9 As an alkoxysilane compound, CH ₃ Si (OC
H ₃ ) ₃ 28.0 parts and ethyl acetate 1870 as a solvent
Parts were stirred and mixed, and 2.0 parts of methyl hydrogen silicone oil (KF99, manufactured by Shin-Etsu Chemical Co., Ltd.) was further added and stirred and mixed to obtain a coating liquid. This is impregnated with A4 paper for Xerox A4 size (manufactured by Fuji Xerox Co., Ltd.), air-dried for 5 minutes, and then heat-dried in an oven at 120 ° C. for 1 minute to give a releasable surface with releasability. Image recording paper was produced. This image recording sheet was processed in the same manner as in Example 8 and evaluated. As a result, the OD ratio of the residual toner after peeling off the toner was 0.03 on average. The OD ratio was 0.07, and the reproduction was sufficiently repeated.

Example 10 25.0 parts of trimethoxyvinylsilane as a silane coupling agent, 15.0 parts of tetraisocyanatesilane as an isocyanate silane compound, and 1860 parts of ethyl acetate as a solvent were stirred and mixed. (Toshiba Silicone: TSF470
2) 1.5 parts were added and mixed by stirring to obtain a coating solution. Using this, image recording paper was processed in the same manner as in Example 8.
Also, except that the stripping solution was changed to the one used in Example 4,
Processing and evaluation were performed in the same manner as in Example 8. As a result, the OD ratio of the residual toner after peeling off the toner was 0.1% on average.
04, and the OD ratio was 0.08 even when the reproduction was repeated 10 times, and the reproduction was sufficiently repeated.

Example 11 γ- (methacryloxypropyl) trimethoxysilane (KBM50 manufactured by Shin-Etsu Chemical Co., Ltd.) as a silane coupling agent
3) 30.0 parts and α, ω-dihydroxypolydimethylsiloxane oil as silanol-modified silicone oil (viscosity 1000 centistokes at 25 ° C.)
To 1 part, 1860 parts of ethyl acetate was added as a solvent, and the mixture was stirred and mixed to obtain a coating liquid. Example 8 using this
The image recording paper was processed in the same manner as described above. This image recording paper was processed and evaluated in the same manner as in Example 10. As a result, the OD ratio of the residual toner after peeling off the toner was 0.04 on average, and the
The ratio was 0.07, and reproduction was sufficiently repeated.

Example 12 CH ₃ Si (OCH ₃ ) as an alkoxysilane compound
₃ 28.0 parts and 1870 parts of ethyl acetate as a solvent were stirred and mixed, and dimethylsiloxane oil (YF: Toshiba Silicone Co., Ltd .: YF) was used as a silanol-modified silicone oil.
3800) and 1.0 part of methyl hydrogen silicone oil (KF99, manufactured by Shin-Etsu Chemical Co., Ltd.) were added and mixed by stirring to obtain a coating solution. Example 8 using this
The image recording paper was processed in the same manner as described above. This image recording paper was treated and evaluated in the same manner as in Example 8, except that the stripping solution was changed to that used in Example 5. As a result, the OD ratio of the residual toner after peeling off the toner was 0.04 on average, and the
The ratio was 0.04, and the reproduction was sufficiently repeated.

Example 13 CH ₃ Si (OCH ₃ ) as an alkoxysilane compound
₃ 32.0 parts and 1800 parts of ethyl acetate as a solvent were stirred and mixed, and dimethylsiloxane oil (YF: Toshiba Silicone Co., Ltd .: YF) was used as a silanol-modified silicone oil.
3800) and 1.5 parts of an amino-modified silicone oil (TSF4702 manufactured by Toshiba Silicones Co., Ltd.) were added and mixed by stirring to obtain a coating solution. Using this, image recording paper was processed in the same manner as in Example 8. This image recording paper was processed and evaluated in the same manner as in Example 12. As a result, the OD ratio of the residual toner after peeling off the toner was 0.03 on average, and the
The reproduction was sufficiently repeated at a ratio of 0.03.

Example 14 Color copier Acolor636 (manufactured by Fuji Xerox Co., Ltd.)
In the same manner as in Example 8, a fixing unit and a new release liquid applying unit were added to modify the apparatus, and the operation was performed in the same manner as in Example 8. 60 parts of methylsilyl triisocyanate, 20 parts of phenylsilyl triisocyanate as an isocyanate silane compound, 8 parts of monooctyl acid phosphate as a curing reaction modifier, 2400 parts of ethyl acetate
Parts and diglyme 100 parts were stirred and mixed to obtain a coating solution.
This was impregnated in A4 size L paper for Xerox (manufactured by Fuji Xerox) in the same manner as in Example 1 and air-dried for 5 minutes.
The film was thermally dried in an oven at 0 ° C. for 1 minute to produce a reproducible image recording sheet having a surface having releasability. FIG. 8 shows the overall layout configuration of the modified copier.

When the image recording paper is discharged from the normal tray of the modified copier, in the copy mode, the image area is exposed on the photosensitive member according to the normal copier process, and the electrostatic latent image is formed. An image was formed and the latent image was developed with toner. The developed toner image was transferred onto the image recording paper adsorbed on the transfer drum. After the transfer for four colors was repeated, the toner was peeled off from the transfer drum, and was conveyed to the fixing unit in the state shown in FIG. 6 to be fixed. Next, reproduction evaluation of the image recording paper was performed using this modified copier. The stripping solution used in Example 6 was used and supplied to the liquid storage tank in the stripping solution application unit. The image recording paper on which the above-described image was formed was set on the toner removal reproduction tray shown in FIG. 8, the reproduction mode was set, and the copying machine was started. As a result, the image recording paper was reproduced finely and discharged from the copying machine. The image recording paper was evaluated in the same manner as in Example 1, and as a result,
The OD ratio of the residual toner after peeling off the toner is 0.03 on average.
Even if the reproduction is performed 10 times repeatedly, the OD ratio is 0.3.
03 was sufficient for repeated reproduction.

Example 15 MeSi (NCO) as an isocyanate silane compound
₃ 10.0 parts and 970 parts of ethyl acetate as a solvent were stirred and mixed, and further, Me was added as a silane compound having a SiH group.
5.0 parts of HSi (OCH ₃ ) _{2 and} CH ₃ (CH ₂ ) ₁₁ Si (OC ₂ H ₅ ) ₃ as an alkoxysilane compound.
0 parts and 1.5 parts of silanol-modified methylphenylsilicone oil (TSF431, manufactured by Toshiba Silicone Co., Ltd.) were added and mixed by stirring to obtain a coating solution. Example 1 using this
The image recording paper was processed in the same manner as in No. 4. This image recording sheet was processed and evaluated in the same manner as in Example 14.
As a result, the OD ratio of the residual toner after peeling off the toner is 0.02 on average, and the O.D.
The D ratio was 0.04, and the reproduction was sufficiently repeated.

Example 16 80 parts of methylsilyltriisocyanate as an isocyanate silane compound, α, ω-dihydroxypolydimethylsiloxane oil as a silanol-modified silicone oil (viscosity of 2000 centistokes at 25 ° C.) 8
Parts, 3 parts of dibutyl acid phosphate as a curing reaction modifier and 2,000 parts of ethyl acetate as a solvent were stirred and mixed to obtain a coating solution. Using this, image recording paper was processed in the same manner as in Example 14. Further, the same treatment as in Example 14 was performed except that the stripping solution was changed to the one used in Example 7, and the evaluation was performed in the same manner. As a result, the OD ratio of the residual toner after peeling off the toner was 0.04 on average, and the OD ratio was 0.04 even when the reproduction was repeated 10 times, and the reproduction was sufficiently repeated.

Example 17 C ₁₈ H ₃₇ Si (NC
O) ₃ 26.0 parts and 970 parts of ethyl acetate as a solvent are mixed by stirring, 2.6 parts of C ₉ F ₁₉ C ₂ H ₄ Si (NCO) ₃ isocyanate silane compound, carboxy-modified silicone oil (Shin-Etsu Chemical Co., Ltd.) Company: X-22-3
710) 1.6 parts were added, and the mixture was stirred and mixed at 25 ° C for 24 hours to obtain a coating solution. This is impregnated in X4 paper J4 paper (manufactured by Fuji Xerox Co., Ltd.) and air-dried for 10 minutes.
The resultant was dried by heating in an oven at 15 ° C. for 2 minutes to produce a reproducible image recording sheet having a surface having releasability. This image recording paper was processed in the same manner as in Example 16 and evaluated similarly. As a result, the OD ratio of the residual toner after the toner was separated was 0.02 on average, and the OD ratio was 0.04 even when the reproduction was repeated 10 times, and the reproduction was sufficiently repeated.

Example 18 As an isocyanate silane compound, C ₁₈ H ₃₇ Si (NC
O) ₃ 10.0 parts and 970 parts of ethyl acetate as a solvent were mixed by stirring.
₉ F ₁₉ C ₂ H ₄ Si (NCO) ₃ 6.0 parts, C ₈ H ₁₇ S
10.0 parts of i (NCO) ₃ , 2.6 parts of methylsilyl triisocyanate and 1.6 parts of the carboxy-modified silicone oil were added, and the mixture was stirred and mixed at 25 ° C. for one day to obtain a coating solution. By using this and treating in the same manner as in Example 17, a reproducible image recording sheet having a surface with releasability was produced. This image recording paper was processed in the same manner as in Example 17 and evaluated in the same manner. As a result, the OD ratio of the residual toner after peeling off the toner was 0.03 on average, and the OD ratio was 0.07 even when reproduction was repeated 10 times.
Was enough for repeated playback.

[0078]

As described above, since the image recording paper reproducing method and the reproducing apparatus of the present invention have the above-mentioned structure, the following excellent effects can be obtained as apparent from the embodiments. That is, it is possible to apply the present invention to an apparatus that can be used for both copying and reproduction of image recording paper by slightly modifying a normal copying machine. . Therefore, a new device is not introduced for reproduction, which contributes to space saving without cost. Further, the present invention can be applied not only to a black copy but also to a color copy, and furthermore, it can correspond to a solid image on the entire surface. Also, the repetition stability is sufficient. Therefore, since the paper can be reproduced repeatedly, the unit cost of paper per copy is reduced, which not only increases the economic effect, but also reduces the use of resources and reduces CO ₂ emissions into the atmosphere from the viewpoint of the global environment. The effect of reducing emissions (preventing global warming) can also be expected.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a reproducing apparatus used for a reproducing method of the present invention.

FIG. 2 is an explanatory diagram illustrating a state in which an image recording sheet is reproduced in the reproducing device of FIG. 1;

FIG. 3 is a configuration diagram of a copying apparatus incorporating the reproducing apparatus of the present invention.

FIG. 4 is a diagram showing a state in a copy mode of the stripping liquid application unit in FIG. 3;

FIG. 5 is a diagram showing a state in a regeneration mode of the stripping liquid application unit in FIG. 3;

FIG. 6 is a diagram illustrating a state of the fixing unit in FIG. 3 in a copy mode.

FIG. 7 is a diagram illustrating a state in a reproduction mode of the fixing unit in FIG. 3;

FIG. 8 is a configuration diagram of a color copying apparatus incorporating the reproducing apparatus of the present invention.

[Explanation of symbols]

1, 2, conveying roller, 3 pressure roller, 4 conveying belt, 5 peeling roller, 6 heater, 7 heat insulating material, 8
... Removed object collection box, 9,10 ... Conveyance roller, 11 ...
Strip finger, 12 ... cleaning blade,
13 image recording paper, 14 toner, 15 stripper, 1
6, 17: coating roller, 18, 19: liquid supply roller, 2
0, 21: liquid storage tank, 30: fixing unit, 31: heat roller, 32: pressure roller, 33: heat roller also serving as release material, 34: pressure roller, 37: developing device, 39: tray for toner removal and regeneration , 40 ... Transfer device, 41 ... Photoconductor, 5
0: stripper application unit, 56, 57: application roller, 5
8,59 ... Partition plate.

Claims (7)

[Claims] An image recording sheet having an image formed by an image forming material containing a heat-fusible component on the surface of an image recording sheet to which a release property has been imparted, and a release liquid containing at least water is applied to the image recording sheet. A method for reproducing a reproducible image recording sheet, wherein the image forming material is pressed against an opposite peeling member while being heated, and the image forming material is transferred from the image recording sheet to the peeling member to reproduce the image recording sheet. 2. The method according to claim 1, wherein the image recording paper provided with the releasability is obtained by applying or impregnating a liquid composition containing a curable silicon compound which directly reacts with a fiber, followed by drying. The method for reproducing a reproducible image recording sheet according to claim 1. 3. The liquid composition containing the curable silicone compound comprises a curable silicone compound and a modified silicone oil or a methyl hydrogen silicone oil having a reactive group in a molecule. 2
The method for reproducing the reproducible image recording paper described in the above. 4. The modified silicone oil having a reactive group in the molecule contains at least one silicone oil selected from the group consisting of silanol-modified silicone oil, carboxy-modified silicone oil, and amino-modified silicone oil. The method for reproducing image recording paper according to claim 3, wherein: 5. The method according to claim 1, wherein the curable silicon compound is a fluorine-containing silicon compound, an isocyanate silane compound, an alkoxysilane compound, a silane coupling agent, and S
The reproduction of the reproducible image recording paper according to claim 2 or 3, wherein the regenerated image recording paper comprises a modified silicone oil having a group containing at least one compound selected from the group consisting of a silane compound having an iH group. Method. 6. The water-containing stripper contains at least one selected from the group consisting of a surfactant and an oily release agent dispersible in water. A method of reproducing a reproducible image recording sheet. 7. A means for applying a release liquid containing at least water to an image recording sheet having an image formed by an image forming material containing a heat-fusible component on the surface of the image recording sheet provided with a release property. And means for heating the image forming material, and means for pressing the image recording sheet against the release member, wherein the image recording material is transferred from the image recording sheet to the release member to reproduce the image recording sheet. Playback device.