JPH0736326A - Image forming substance removing device from image holding member and image holding member processing device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a toner removing device that removes toner from the transfer paper on the surface of which toner is stably attached, the treatment liquid is allowed to efficiently and reliably permeate the interface between the transfer paper and the toner. This ensures that only the toner is removed from the transfer paper. [Structure] Transfer paper 10 on which toner is stably attached
Then, the permeation promoting liquid 21 such as a surfactant is applied by the permeation promoting liquid applying device 2a, and the permeation promoting liquid 2 is applied by the treatment liquid applying device 2b.
The treatment liquid 20 is applied to the transfer paper 10 to which 1 has been applied. Further, the unused transfer paper 10 may be subjected to the above liquid permeation treatment and used for copying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image carrier for removing an image forming substance from an image carrier to which an image forming substance is stably attached by an image forming apparatus such as a copying machine, a facsimile, a printer or a printing machine. The present invention relates to an image forming substance removing device and an image holding member processing device for processing an image holding member to which an image forming substance can be attached by an image forming device such as a copying machine, a facsimile, a printer or a printing machine.

[0002]

2. Description of the Related Art Conventionally, there are known various image forming substance removing methods and devices for removing an image forming substance such as toner from a sheet as a recorded image carrier. For example, as one using a solvent, Japanese Patent Application Laid-Open No. 1-10
In Japanese Patent No. 1576, a sheet on which toner is attached is immersed in a soluble solvent of a toner resin and ultrasonic vibration is applied to the sheet.
A method for removing an image-forming substance is disclosed in which the toner dissolved in a solvent is released from the paper surface. In addition, JP-A-4-3003
In Japanese Patent Publication No. 95, a solvent is attached to a printed portion of waste paper by a method such as dipping, spraying or coating to dissolve the toner,
An image forming substance removing method is disclosed in which the dissolved toner is removed by a method such as washing, air suction, contact with an adsorbent, mechanical peeling or electrostatic adsorption.

On the other hand, as one not using a solvent, for example, in Japanese Patent Application Laid-Open No. 2-255195, a heat-meltable ink or a heat-meltable ink placed on a printed material coated with a release agent on a support by an electrophotographic method or a thermal transfer method is used. A method for removing an image forming substance in which toner is adhered to the ink peeling body and removed by stacking the ink peeling body on the printed body and passing the toner between the heating roller and the pressure roller and cooling the peeled ink peeling body. Is disclosed. Further, in Japanese Unexamined Patent Publication No. 4-64472, at least an endless sheet having a heat-melting resin on the surface, a heat roller and a cooling roller for supporting and rotating the endless sheet, and a paper having a release treatment on its surface (erasable paper) There is disclosed an eraser including a pressing roller that presses against a softened or melted heat-melting resin, and a drive unit that moves these in conjunction with each other. In addition, JP-A-4-829
In Japanese Patent Publication No. 83, 83, two rollers provided in parallel to rotate in pressure contact with each other to pass the paper through the pressure contact point, a heater for heating at least one of the two rollers, and a roller passing through the pressure contact point A scraper for separating the paper from the roller,
An image forming substance removing device is disclosed, which comprises a peeling device that removes the image forming substance attached to the roller from the roller.

By the way, when the above-mentioned solvent-free method and apparatus are used to remove an image-forming substance from a recorded image carrier on which an image is recorded on an ordinary paper having paper fibers exposed on the surface, for example, Since the image-forming substance is firmly fixed to the fibers on the surface of the image-holding member by fusing the image-forming substance containing a heat-meltable resin as a main component to the image-holding member in the fixing step of the electrophotographic method, When the image-forming substance is removed, the paper fibers on the surface are peeled off together with the image-forming substance and the paper quality is damaged.
In particular, in order to improve the removability of the image-forming substance, when heat or pressure is applied to the above-mentioned ink peeling body, endless sheet or roller, depending on various conditions, the space between the image-forming substance and the image carrier may be reversed. In some cases, the fixability of the above is increased, which makes removal difficult.

Therefore, the present applicant has previously proposed that the recorded image carrier contains water as a destabilizing agent, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and a surfactant and a water-soluble polymer. Containing at least one kind of water or aqueous solution selected from the group consisting of aqueous solutions containing, and interposing a peeling member, heat-bonding or pressure-bonding the image-forming substance to the peeling member to peel it from the image carrier. An image forming substance removing method has been proposed (for example, Japanese Patent Application No. 4-255).
916). According to this, only the image-forming substance can be removed without relatively damaging the paper quality of the image carrier.

[0006]

In the structure proposed above, it is desired that the interface between the surface of the image carrier and the image forming substance be sufficiently wetted with a destabilizing agent such as water. Transfer paper as an image carrier conventionally used in an image forming apparatus such as a copying machine has a fibrous structure in which paper fibers (cellulosic fibers) are entangled with each other, as in general paper, and has many fine voids. Exists. When the destabilizing agent such as water is permeated into the transfer paper or the like containing such fine voids,
Generally, the capillary effect is used. However, the gas (for example, air) in the voids prevents permeation of the destabilizing agent into the transfer paper, and as a result, the transfer paper may not be so wet with the destabilizing agent. Therefore, in the case of the apparatus for removing the image-forming substance from the image carrier, the destabilizing agent cannot be surely penetrated to the interface between the transfer paper and the image-forming substance, and therefore the transfer member is used for transfer. When the image-forming substance on the paper is peeled off, the peeling of the image-forming substance from the transfer paper may be insufficient.

Particularly, when water is used as the destabilizing agent, it is difficult to carry out the image holding operation in a short time such as simply passing the image through the water. For example, when pure water is used, the recorded image is held for several hours or more. You need to keep your body in the water. In addition, many transfer papers, which are image carriers for electrophotographic copying machines, have been subjected to a moisture-proof treatment in order to prevent moisture absorption and stabilize transferability and fixing property. Since the toner contains resin as a main component, it does not allow water to pass through, and it is difficult for water to enter the interface. Here, in the case of an aqueous solution containing the above-mentioned surfactant, for example, it becomes possible to remove only the image-forming substance without damaging the paper fiber in about several tens of seconds,
It is considered that this is because the surfactant greatly promotes the entry of water into the interface, but it is desired to further improve the entry of water into the interface.

Further, in the method and apparatus using the above solvent, even when it is used for removing an image forming substance from a recorded image carrier in which an image is recorded on a normal paper having paper fibers exposed on the surface thereof. Thus, it is possible to remove only the image-forming substance without damaging the paper fibers, as compared with a method or an apparatus that does not use a solvent. However, depending on the solvent used, there is a risk that the paper quality will be chemically altered, and even in this case, it is desired to allow the solvent to enter the interface between the paper fibers and the image forming substance on the surface of the image carrier in a short time.

Further, the present applicant has selected an unused image carrier from the group consisting of an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and an aqueous solution containing a surfactant and a water-soluble polymer. It was proposed to retain at least one kind of water or an aqueous solution, and then to dry it (see, for example, Japanese Patent Application No. 4-255915). The image carrier subjected to this treatment is used for normal image formation and then reused after the image forming substance is removed by the above-mentioned image forming substance removing method. Since it does not sufficiently penetrate into the body, there is a possibility that the image forming substance adhered on the image holding member cannot be surely removed by the above-mentioned image forming substance removing method after forming an image on the image holding member which has been subjected to the above treatment. there were.

The present invention has been made in view of the above problems, and a first object thereof is to allow a destabilizing agent to efficiently and surely permeate the interface between the image carrier and the image forming substance. According to the present invention, there is provided an apparatus for removing an image-forming substance from an image carrier capable of surely removing only the image-forming substance from the image carrier, and a second purpose thereof is to attach the image-forming substance. It is an object of the present invention to provide an image carrier processing apparatus capable of efficiently and reliably permeating a destabilizing agent into an image carrier capable of performing the above.

[0011]

In order to achieve the first object, the invention of claim 1 removes the image-forming substance from an image carrier on which the image-forming substance is stably attached. In an apparatus for removing an image-forming substance from an image carrier, a penetrating agent that promotes permeation of a destabilizing agent that destabilizes an adhesion state between the surface and the image-forming substance is added to the image forming member. A penetration enhancer applying means for applying the substance to the image carrier and the image carrier to which the penetration promoter is applied,
A destabilizing agent imparting means for imparting the destabilizing agent is provided, and the invention of claim 2 is characterized in that an image carrier having an image-forming substance stably attached to the surface thereof is used. In an apparatus for removing an image-forming substance from an image carrier for removing the image-forming substance, a penetrating degree that promotes permeation of a destabilizing agent that destabilizes an adhesion state between the surface and the image-forming substance. Penetration promoting agent applying means for applying an accelerator to the image carrier, and the destabilizing agent is applied to the image carrier to which the penetration promoting agent is applied and the image forming substance is adhered. The destabilizing agent providing means is provided.

Further, in order to achieve the above second object,
According to a third aspect of the invention, in the image carrier processing apparatus, there is provided a penetration enhancer for promoting the penetration of the destabilizing agent, which makes the adhesion state between the surface of the image carrier and the image forming substance unstable. ,
Penetration promoting agent applying means for applying the image forming substance to the image carrier, and instability for applying the destabilizing agent to the image carrier to which the penetration promoting agent is applied. It is characterized in that an agent providing means is provided.

The penetration enhancer is not only used to promote the permeation of the destabilizing agent into the image carrier, but also adheres to the surface of the image carrier when the destabilizing agent is applied. Also includes those that promote. Further, the penetration enhancer and the destabilizer may be not only liquid but also gel or powder.

[0014]

According to the invention of claim 1, the penetration promoting agent is applied to the surface of the image carrier to which the image-forming substance is adhered by the penetration promoting agent applying means, whereby the image carrier is provided. The destabilizing agent easily penetrates into the interface between the image forming substance and Then, the destabilizing agent imparting means imparts the destabilizing agent to the image carrier to which the penetration enhancer is imparted, whereby the destabilizing agent is efficiently and reliably applied to the interface portion. Will be able to penetrate into. Thus, when the destabilizing agent permeates the interface, the characteristics of the image carrier, the image-forming substance, or both of the interface change,
The adhesion state between the image carrier and the image forming substance can be reduced, and the adhesion state can be reliably made unstable.

In the second aspect of the invention, the penetration enhancer applying means applies the penetration enhancer to the surface of the image carrier, whereby the interface between the image carrier and the image forming substance is provided. The destabilizing agent easily penetrates into the area. Then, the penetration enhancer is added by the destabilizing agent applying means,
In addition, the destabilizing agent is applied to the image carrier to which the image forming substance is attached, so that the destabilizing agent can efficiently and surely penetrate into the interface portion.
Thus, when the destabilizing agent penetrates into the interface, the characteristics of the image carrier, the image-forming substance, or both at the interface change, and the image-carrying agent between the body and the image-forming substance changes. It becomes possible to reliably make the attached state unstable, for example, by reducing the adhesive force.

According to the third aspect of the present invention, the penetration enhancer imparting means imparts the penetration enhancer to an image carrier to which an image-forming substance can be attached. The destabilizing agent easily penetrates into the interface with the image forming substance. Then, with the destabilizing agent imparting means,
The destabilizing agent is added to the image carrier to which the penetration enhancer is applied, whereby the destabilizing agent is efficiently and surely permeated into the image carrier, or the image carrier. Will be able to be applied on.

[0017]

【Example】

Example 1 Hereinafter, the present invention will be described with reference to a transfer paper as an image carrier on which an image is formed by a transfer type electrophotographic copying machine.
An embodiment applied to an apparatus for removing an image forming substance from an image carrier (hereinafter referred to as a toner removing device) for removing a heat-melting toner (hereinafter referred to as a toner) as an image forming substance will be described. FIG. 1 shows a schematic configuration diagram of an example of a toner removing device to which the present invention can be applied. First, a general description will be given of the toner removing device. The toner removing device includes a paper feeding unit 1 for separating and feeding the transfer papers 10 on which toner images are formed, which are accommodated in a stacked state, one by one, and the paper feeding unit 1. A liquid applying unit 2 that supplies liquid to the transferred transfer paper 10, a toner peeling unit 3 that removes toner from the transfer paper 10 that has been supplied, and a drying unit that dries the transfer paper 10 from which toner has been removed. 4 and a paper receiving unit 5 that receives the transfer paper 10 discharged from the drying unit 4. The transfer paper 10 conveyed from the paper feeding unit 1 is a liquid destabilizing agent (hereinafter referred to as a processing liquid) 20 that makes the adhesion state of the transfer paper 10 and the toner in the liquid applying unit 2 unstable. And the treatment liquid 20 is applied to at least the transfer paper 1
Permeate into the interface between 0 and toner. Then, the treatment liquid 20 is removed by the peeling roller 302 of the toner peeling unit 3.
After the toner is peeled off from the transfer paper 10 at the interface where the ink has penetrated, the transfer paper 10 is dried by the drying roller 402 of the drying unit 4 and discharged to the paper receiving unit 5.

Here, as the treatment liquid 20, water, an aqueous solution containing a water-soluble polymer, an aqueous solution containing a surfactant,
At least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing a water-soluble polymer and a surfactant can be used. Further, the water or the aqueous solution may contain a predetermined organic solvent. Moreover, as the processing liquid 20, only an organic solvent can be used.

Examples of the water-soluble polymer include starchy substances (branch starch, potato starch, tapioca starch, wheat starch, corn starch, etc.),
Mannan (konjac, etc.), seaweed (Funori, agar, sodium alginate, etc.), plant mucilage (troloois,
Gum tragacanth, gum arabic, etc.), mucilage by microorganisms (dextran, levan, etc.), protein (glue,
Gelatin, casein, collagen, etc.) natural polymers, cellulose-based (viscose, methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, etc.), starch-based (soluble starch, carboxymethyl starch, dialdehyde starch) semi-synthetic polymers, Examples thereof include synthetic polymers, but are not limited thereto.

Examples of the above-mentioned surfactant include, for example,
Anionic (carboxylic acid salt, sulfonate, sulfuric acid ester salt, phosphoric acid ester salt, phosphonate, etc.), cationic (amine salt, quaternary ammonium salt, benzalkonium salt, verzethonium chloride salt, pinidinium salt, Imidazolinium salt, sulfonium salt, polyethylene polyamine, etc.), amphoteric system (amino acid, carboxybetaine, sulfobetaine, aminosulfate, aminocarboxylate, imidazoline derivative, etc.), nonionic (ether type, ether ester type, ester) Type, nitrogen-containing type, polyhydric alcohol, aminoalcohol, polyethylene glycol, etc.) and fluorochemical surfactants, but not limited thereto.

As the organic solvent contained in the water or the aqueous solution, turpentine, dipentene, butyl acetate, carbon tetrachloride, cellosolve acetate, xylene, toluene, ethyl acetate, diacetone alcohol, methyl cellosolve acetate, benzene, methyl ethyl ketone, Examples thereof include, but are not limited to, methyl acetate, methylene chloride, ethylene dichloride, cyclohexane, cellosolve, dioxane, acetone, methyl cellosolve, cyclohexanol, butanol and the like.

As the organic solvent used alone, carbon-hydrogen solvents such as hexane, heptane, octane, nonane, spirit, naphtha N01-6 (trade name of Shell Petroleum Co.), Isopar E, L, K, V (trade name of Exxon), IP Solvent (trade name of Idemitsu Oil Co., Ltd.), Shell-sol 70, 71, Solvesso 100,
150 (trade name of Shell Oil), Ascom OMS,
460 (trade name of Spirits), Vegasol 103
0,2130,3040 (trade name of Mobil Oil Co., Ltd.) and the like. Further, Fluorinert FC40, 43, 70, 77 (trade name of Sumitomo 3M), which is a fluorine-based solvent,
Aflude E10, 16, 18, etc., Shin-Etsu Silicone KF96 (trade name) which is a silicone solvent, Toray Silicone SH200, 344 (trade name), Toshiba Silicone T
SF431 (trade name) and the like are included, but the invention is not limited thereto.

Next, the units 1, 2, 3 of the illustrated example
4, 5 will be described. The paper feeding unit 1 feeds the transfer paper 10 stacked on the bottom plate 101 with the surface on which the toner image is formed (hereinafter referred to as a toner image surface) downward from the lowermost one by the paper feeding roller 102. Then, the double feed sheet is separated by a separation mechanism (not shown), and only one transfer sheet 10 is used as a registration roller pair 1 for timing adjustment and skew correction.
It is sent out at 04. Since its specific configuration and operation are the same as those of the paper feeding mechanism in the electrophotographic copying machine,
Detailed description is omitted.

The liquid application unit 2 contacts the liquid container 201 filled with a predetermined amount of the processing liquid 20 and one surface (the upper surface in the drawing) of the transfer paper 10 while the processing liquid 20 in the liquid container 201 is being contacted.
The submerged conveying roller 202 that conveys the medium to guide the inside, the driving unit (not shown) of the submerged conveying roller 202, and the other surface (the lower surface in the drawing) of the transfer paper 10 into the processing liquid 20 of the liquid container 201. A submerged guide plate 203 for guiding, a pair of squeezing rollers 204 also functioning as a holding and conveying means, a squeezing rod 205 that is arranged to bite into the lower squeezing roller 204, and the like are provided.
In this unit 2, the transfer paper 10 fed from the paper feeding unit 1 is guided into the treatment liquid 20 in the liquid container 201 by the submerged conveying roller 202 and the submerged guide plate 203, and immersed in the treatment liquid 20. After being squeezed, the squeezing roller pair 204
The excess processing liquid 20 is removed by the above and is conveyed to the next toner peeling unit 3. Note that another configuration example of the liquid applying unit 2 will be described in detail later.

The toner peeling unit 3 includes a pair of peeling rollers 302 each having a built-in heating lamp 301 as a means for softening the toner T and arranged in pressure contact with each other, and a peeling roller 302 near the pressure contact portion on the transfer paper discharge side. Separation claw 303 and peeling roller 30 arranged so as to contact the surface
A cleaning device 304 for cleaning the surface of 2.
A drive unit (not shown) and the like are provided.

The surface of the peeling roller 302 is made of a material having an adhesive force greater than that of the transfer paper 10 and the toner to at least the softened toner. Specifically, the same or similar toner component resin as the above toner, component resin of an adhesive, or the like can be used,
In addition, aluminum-based, copper-based, nickel-based, and other metal materials can be used, but are not limited thereto. The resin may be water-soluble or water-insoluble.

Examples of the above-mentioned toner component resin include polystyrene resin, acrylic resin, methacrylic resin, styrene-butyl acrylic copolymer, styrene-butadiene copolymer, polyester resin, epoxy resin and the like, but are not limited thereto. Not a thing.

As the component resin of the adhesive, protein adhesives such as glue, gelatin, albumin, and casein, and carbohydrate-based adhesives such as starch-based, cellulose-based, complex polysaccharide-based (arabic gum, tragacanth gum, etc.) Agents, vinyl acetate polymers and copolymers, acrylics,
Heat-soluble adhesives such as ethylene copolymers, polyamides, polyesters, polyurethanes, polychloroprene-based, nitrile rubber-based, recycled rubber-based, SBR-based, rubber-based adhesives such as natural rubber-based, rubber-based, acrylic-based, etc. Polyethylene terephthalate (PE) with pressure-sensitive adhesive and titanium oxide dispersed
T), etc., but not limited thereto.

When the above resin is used, it is desirable to have a multi-layer structure of at least two layers of a support and a surface layer from the viewpoints of preventing elongation due to tension and heat, durability and the like. Examples of the support for supporting the resin and the like include a rubber roller, a sheet, a cellophane tape, a kraft paper adhesive tape, a polyvinyl chloride tape, an acetone tape,
A tape such as a filament reinforcing tape can be used, but is not limited to these.

The cleaning device 304 removes the toner T on the surface of the peeling roller 302, the scraper blade 306 that scrapes off the toner T on the cleaning roller 305, and the toner T scraped off by the scraper blade 306. A toner receiver (toner container) 307 for containing the toner is provided.

The drying unit 4 is for drying the transfer paper 10, and is composed of an upper drying roller 402 made of, for example, aluminum and having a built-in heating lamp 401, and a lower drying roller 404 pressed against the upper drying roller 402. .

The paper receiving unit 5 is provided with a paper discharge tray 501 for receiving the transfer paper discharged from the drying unit 4.

FIG. 2 is a schematic view of the liquid applying unit 2 which is a characteristic part of the present invention. The liquid applying unit 2 according to the present embodiment applies a permeation promoting liquid 21 as a permeation promoting agent for promoting the permeation of the treatment liquid 20 into the interface between the transfer paper 10 and the toner to the transfer paper 10. And a treatment liquid application device 2b as a destabilizing agent application means for applying the treatment liquid 20 to the transfer paper 10 to which the permeation enhancement liquid 21 has been applied. ing. Here, as the penetration promoting liquid 21, for example, the above-mentioned surfactant or the like can be used. Further, as the permeation promoting liquid application device 2a and the treatment liquid application device 2b, liquid application devices having the configurations described below can be used, and the liquid application devices can be used in an appropriate combination. Further, in each of the penetration promoting liquid applying device 2a and the processing liquid applying device 2b, a plurality of the liquid applying devices are used, and the penetration promoting liquid 21 or the processing liquid 20 is applied to the transfer paper 10.
It may be configured to be applied multiple times.

A more specific structural example of the liquid applying device as the permeation promoting liquid applying device 2a or the processing liquid applying device 2b will be described below. In this specific configuration example, the permeation promoting liquid 21 and the treatment liquid 20 can be used in common, and hence they are simply referred to as the liquid 22.

An example of the constitution of the liquid applying device which adopts the method of immersing the transfer paper 10 in the liquid 22 will be described with reference to FIG. This liquid applying device is a liquid container 201 filled with a predetermined amount of liquid 22 and a liquid to be conveyed so as to be guided into the liquid 22 of the liquid container 201 while being in contact with one surface (the upper surface in the drawing) of the transfer paper 10. Medium conveyance roller 202, drive unit of submerged conveyance roller 202 (not shown), other surface of transfer paper 10 (lower surface in the figure)
Guide plate 20 for guiding liquid into liquid 22 of liquid container 201
3, a separation claw 210, a pair of aperture rollers 204, and the like. In the present example, the transfer paper 10 fed from the paper feeding unit 1 (see FIG. 1) is guided into the liquid 22 of the liquid container 201 by the submerged conveying roller 202 and the submerged guide plate 203, and the liquid 22 Be immersed in. After that, the transfer paper 10 separated from the surface of the submerged conveying roller 202 by the separating claw 210 has the excess liquid 22 removed by the squeezing roller pair 204, and is conveyed to the next toner peeling unit 3.

With reference to FIG. 4, another example of the constitution of the liquid applying device which adopts the method of immersing the transfer paper 10 in the liquid 22 will be described. This liquid applying device is provided with an in-liquid conveying roller 20 of FIG.
Instead of 2, a conveyor belt 211 stretched around each conveyor roller pair 209 driven by a drive unit (not shown) is provided. In this example, the transfer paper 10 fed from the paper feeding unit 1 (see FIG. 1) is caught by the lower surface of the conveyor belt 211 by the belt feeding, guided into the liquid 22 of the liquid container 201, and immersed in the liquid 22. To be done. After that, the transfer paper 10 is easily separated by the transport roller 11 at the transport end portion whose transport direction is reversed at an acute angle, and is transported to the next toner peeling unit 3. Note that, also in this example, the diaphragm roller pair 204 may be provided.

With reference to FIG. 5, an example of the structure of the liquid applying device which adopts the method of applying the liquid 22 to the transfer paper 10 will be described. The liquid applying device includes a liquid container 201 filled with a predetermined amount of the liquid 22, a pair of coating rollers 207, at least a surface portion of which is formed of a liquid absorbing material and which conveys the transfer paper 10 while sandwiching it.
A drive unit (not shown) of the coating roller pair 207, a liquid supply pipe 212 for supplying the liquid 22 to one coating roller 207.
And a pump 213 and the like. Here, the lower coating roller 207 is arranged so that a part thereof is immersed in the liquid 22 in the liquid container 201. Also, the coating roller pair 20
The liquid absorbing material of No. 7 may be any material that can hold the liquid 22 and can be applied so as to be applied to the transfer paper, and specific examples thereof include sponge and felt, but are not limited thereto. Not a thing. In this example, the transfer paper 10 fed from the paper feeding unit 1 (see FIG. 1) is the liquid 2
2 is conveyed while being sandwiched by a pair of coating rollers 207 holding the surface 2 inside and inside, and at this time, the liquid 22 is applied to both surfaces of the transfer paper 10. If one of the coating roller pair 207 is made of a sponge having a large cell or a soft felt, a pressure difference is generated between the nip portion of the coating roller pair and the other portion, and the penetrating force of the liquid 22 is increased. You will be able to improve. Further, in this example, the simultaneous coating process on both surfaces of the transfer paper 10 is possible, but when performing the coating process only on one side,
For example, the coating roller 207 at the bottom of FIG.
The upper application roller 207 may be composed of a normal rubber roller or the like.

With reference to FIG. 6, another example of the configuration of the liquid applying device which adopts the method of applying the liquid 22 to the transfer paper 10 will be described. The liquid applying device is configured to apply a fixed amount of the liquid 22 to one surface (the upper surface in the drawing) of the transfer paper 10, and conveys while holding the liquid container 201 filled with the liquid 22 in a predetermined amount and the transfer paper 10. Coating roller pair 207, coating roller pair 2
07 drive unit (not shown), a liquid reservoir 214 arranged so that the liquid 22 comes into contact with the surface of the upper coating roller 207, and a blade 21 for regulating the amount of liquid adhered to the surface of the coating roller 207.
5, a liquid supply pipe 212 for supplying the liquid 22 to the liquid reservoir 214, a pump 213, and the like. In this example, the liquid 22 supplied by the pump 213 from the liquid container 201
Are once stored in the liquid reservoir 214 and adhere to the surface of the upper coating roller 207. The amount of adhesion to the surface is regulated to a certain amount by the blade 215, and the transfer paper 10 is prevented from being excessively wetted. The transfer paper 10 fed from the paper feeding unit 1 (see FIG. 1) is applied to the application roller pair 207.
The liquid 22 is conveyed while being sandwiched by and the liquid 22 is applied to the surface of the transfer paper 10. In this example, the coating roller 17
The roller 18 facing the roller is formed of a material containing bubbles such as sponge, and the pressure difference between the nip portion of both rollers and the other portion is used to enhance the penetrating force of the liquid 22 into the transfer paper 10. You can Further, in this example, the processing surface that regulates the coating amount to a constant value is set to the upper surface, but the processing surface may be set to the lower surface.

With reference to FIG. 7, an example of the structure of the liquid applying device which adopts the method of spraying the liquid 22 onto the transfer paper 10 will be described. This liquid application device includes a liquid container 201 filled with a predetermined amount of liquid 22, a nozzle 216 for spraying the liquid 22, and a nozzle 216.
Liquid supply pipe 212 and pump 213 for supplying liquid up to
The conveyance roller pair 209, the squeezing roller pair 204, the liquid shield plate 217 for suppressing the scattering of the liquid 22 and the like are provided. In this example, the liquid 2 is sprayed from the nozzle 216 onto the processing surface of the transfer paper 10 fed from the paper feeding unit 1 (see FIG. 1).
2 is applied. The liquid 22 is often excessively applied to the processing surface during the application by the spraying, but the excess liquid 22 is removed by the pair of squeezing rollers 204 provided on the downstream side. Although the processing surface is set to the lower surface in this example,
It may be set on the upper surface or both surfaces.

With reference to FIG. 8, an example of the structure of a liquid applying device which adopts a method of atomizing the liquid 22 and applying it to the transfer paper 10 will be described. This liquid applying device includes a liquid container 201 filled with a predetermined amount of liquid 22, an atomizing device 218, a condensing part 219 for returning the atomized liquid 22a to the liquid, and a nozzle 21 for spraying the liquid 22.
6, a liquid supply pipe 212 for supplying the liquid to the nozzle 216, a pump 213, a conveyance roller pair 209, and a diaphragm roller pair 2
It has 04 etc. Here, as the atomizing device 218, for example, an ultrasonic vibrator, a heater, or the like can be used, but the atomizing device 218 is not limited to this. In this example, the liquid 22 in the liquid container 201 is atomized by the atomizing device 218, and the transfer paper 10 fed from the paper feeding unit 1 (see FIG. 1) is in the mist state floating on the liquid container 201. Liquid 2
The sheet 2a is conveyed by the pair of conveying rollers 209. At this time, the mist-like liquid 22 a is attached to the surface of the transfer paper 10, so that the liquid 22 is applied to the transfer paper 10. In addition,
The atomized liquid 22a is liquefied again in the condensing unit 219 and is used again.

An example of the structure of the liquid applying device using the felt blade 220 will be described with reference to FIG. This liquid applying device includes a felt blade 220, a conveyance guide plate 221, a conveyance roller pair 209, a part of which is immersed in the liquid container 201.
A pair of aperture rollers 204 and the like are provided. In this example, the transfer paper 10 fed from the paper feed unit 1 (see FIG. 1)
Is sent out between the transport guide plates 221 by the transport roller pair 209, contacts the felt blade 220 that sufficiently contains the liquid 22, and the liquid 22 is applied onto the transfer paper 10.
The excess liquid 22 on the transfer paper 10 is removed by the downstream squeezing roller pair 204.

With reference to FIG. 10, an example of the structure of a liquid applying device which adopts a method of applying the liquid 22 by a jet nozzle will be described. This liquid applying device is equipped with a jet nozzle head 223 having a plurality of jet nozzles provided orthogonally to the traveling direction of the transfer paper 10, an image sensor (not shown) for reading an image on the transfer paper 10, and the like. In this example, the jet nozzle head 22 is placed in the image area 10a on the transfer paper 10 fed from the paper feeding unit 1 (see FIG. 1).
The liquid 22 is jetted at 3. Further, the image on the transfer paper 10 is read by the image sensor, and the liquid 22
Control the presence or absence of the injection of. Here, it is not necessary to set the reading / jetting position accuracy very finely, as long as the liquid 22 can be applied to an area larger than the image. For example, in inkjet printing used in printers and the like, an accuracy of 200 to 400 dots per inch is generally used, but in this example, a division accuracy of several centimeters is sufficient. However, it is of course possible to control the reading / injection position with high accuracy and to perform processing on the entire surface without providing a reading unit.

11 (a) and 11 (b), the liquid 22 in the processing head 224 is brought into direct contact with the transfer paper 10 to obtain the liquid 2
A configuration example of the liquid applying device that adopts the method of applying 2 will be described. This liquid applying device is hollow and has an elongated opening 224a extending in a direction orthogonal to the transfer direction of the transfer paper 10.
A processing head 224 (see FIG. 11B) in which
A facing roller 225 arranged at a position facing the processing head 224 through the transfer paper 10, a liquid container 201 filled with a predetermined amount of the liquid 22, a liquid supply pipe 212 and a pump 213 for supplying the liquid 22 to the processing head 224, Conveyor roller pair 2
09, a pair of aperture rollers 204, a conveyance guide plate 221, a drive unit (not shown) for each roller, and the like. In this example, the transfer paper 10 fed from the paper feed unit 1 (see FIG. 1) is conveyed while being sandwiched between the processing head 224 and the counter roller 225. At this time, the processing head 22
The liquid 22 in the fourth opening 224a comes into direct contact with the lower surface of the transfer paper 10 to apply the liquid 22 to the transfer paper.
The excess liquid 22 on the transfer paper 10 is removed by the downstream squeezing roller pair 204.

With reference to FIG. 12, an example of the structure of the liquid applying device using the peeling drum 226 used in the toner peeling unit 3 will be described. This liquid applying device is hollow and has a cylindrical peeling drum 226 holding the liquid 22 therein, a drive unit (not shown) of the peeling drum 226, and an opposed roller arranged so as to come into pressure contact with the surface of the peeling drum 226. 227, a liquid receiving container 28 for receiving the liquid 22 from the facing roller 227, and the like. The outer wall of the peeling drum 226 has a large number of pores, and the facing roller 227 is made of a material containing bubbles such as sponge. In this example, the paper feeding unit 1
The transfer paper 10 fed from (see FIG. 1) is conveyed while being sandwiched between the peeling drum 226 and the counter roller 227,
The liquid 22 inside the peeling drum 226 is nipped between the rollers.
And the liquid 22 is applied to the transfer paper 10, and the transfer paper 10 is wound around the peeling drum 226.
The following peeling process is performed. Since the opposing roller 227 is formed of a material containing bubbles such as sponge, a pressure difference between the nip portion and the other portion is generated, and the peeling drum 226.
It assists the bubbling of liquid 22 from the inside. Further, by increasing the pressure inside the peeling drum 226, the liquid 22
You can also make it spring up.

In the liquid applying device of FIGS. 3 to 12, the liquid 22 itself or the submerged transport roller 20 is used.
2, ultrasonic waves may be applied to the conveyor belt 211, the coating roller pair 207, the felt blade 220, and the like. As a result, the permeation speed of the liquid 22 into the transfer paper 10 can be increased. Further, a temperature control device or the like for keeping the temperature of the liquid 22 within a range suitable for processing may be provided. As a result, the processing speed and the reliability of the processing can be improved. Further, regarding the handling of the liquid 22, it is necessary to take measures such as devising the handle position of the device main body so as to prevent the liquid 22 from scattering and leaking when carrying the main body of the device, and making the liquid container 201 into a sealed structure. It may become. For this measure, it is possible to apply the technology of conventional wet copying machines, diazo copying machines and the like. Also, liquid 2
When 2 is used by circulating, it is desirable to dispose a filter for removing dust, impurities, etc. in a part of the circulating path. Further, each of the above rollers may be replaced with a conveyor belt or the like.

As described above, according to the present embodiment, one of the liquid applying devices is used as the permeation promoting liquid applying device 2a to apply the permeation promoting liquid 21 such as a surfactant to the transfer paper 10. The treatment liquid 20 is easily permeated into the transfer paper 10 or the treatment liquid to be applied is easily attached thereto. Then, by using one of the liquid applying devices as the processing liquid applying device 2b, the processing liquid 20 is applied to the transfer paper 10 to which the permeation promoting liquid 21 is applied, whereby the processing liquid 20 is applied to the interface portion. It becomes possible to penetrate efficiently and reliably. When the treatment liquid 20 permeates the interface portion in this way, the characteristics of the transfer paper 10, the toner, or both of the interface portion are changed, and the adhesive force between the transfer paper 10 and the toner is reduced. The adhered state can be reliably made unstable. Therefore, only the toner can be reliably removed from the transfer paper 10.

[Embodiment 2] Next, according to the present invention, an image can be formed by an electrophotographic copying machine or the like. For example, on the unused transfer paper 10, the penetration promoting liquid 21 and the treating liquid 2 are used.
An embodiment applied to a transfer paper treatment device which is an image carrier processing device for giving 0 will be described. This transfer paper processing apparatus can use the same configuration as that of the first embodiment, and for example, the toner removing unit 3 of the toner removing apparatus of FIG.
The transfer paper 10 can be directly conveyed from the liquid applying unit 2 including the permeation promoting liquid applying device 2a and the treatment liquid applying device 2b to the drying unit 4. In addition, as shown in FIG. 13, a bypass transport path 232 that bypasses the toner peeling unit 3 of the toner removing device, and a user can switch between the toner removal mode of the transfer paper with toner attached and the unused transfer paper processing mode. A mode switching device (not shown) capable of switching, and a transport path switching device 2 for switching the transport path of the transfer sheet by the mode switching device.
33, and when the unused transfer paper processing mode is selected, the transfer paper 10 may be configured to pass through the transport path 232 that bypasses the toner peeling unit 3. Here, a solution of the above surfactant or the like can be used as the penetration enhancer applied to the transfer paper 10, and a destabilizing agent that is pure with the treatment liquid 20 used in Example 1 above can be used. Use without water, that is, at least one aqueous solution selected from the group consisting of an aqueous solution containing a water-soluble polymer, an aqueous solution containing a surfactant, and an aqueous solution containing a water-soluble polymer and a surfactant. You can

As described above, according to this embodiment, any one of the liquid applying devices is used as the permeation promoting liquid applying device 2a, and the permeation promoting liquid 21 such as a surfactant is not adhered to the permeation promoting liquid 21. The treatment liquid 20 is applied to the transfer paper 10 to be used, so that the treatment liquid 20 can easily penetrate into the transfer paper 10 or the treatment liquid to be applied can easily adhere thereto. Then, any one of the above-described liquid applying devices is used as the processing liquid applying device 2
The transfer paper 1 used as b and to which the penetration promoting liquid 21 is applied
The treatment liquid 20 is applied to the surface of No. 0, whereby the treatment liquid 20 can efficiently and surely permeate into the interface portion, or the treatment liquid 20 can be surely applied to the transfer paper 10. Therefore, an image (toner image) is formed on the transfer paper 10.
When the toner image on the transfer paper 10 is removed after the formation of the toner image, the adhesion state between the surface of the transfer paper 10 and the toner becomes unstable, and the toner image can be removed from the surface more reliably than before. Become.

In the above embodiment, the transfer paper 10 on which an image is formed by the transfer type electrophotographic copying machine according to the present invention,
Alternatively, although it is applied to the unused transfer paper 10 before an image is formed, it can also be applied to an image carrier such as a recording paper used in other image forming apparatus such as a paper such as a facsimile, a printer and a printing machine. Further, the present invention is not limited to an image carrier having a fibrous structure, but can be applied to an image carrier capable of forming an image. The image carrier to which the present invention can be applied may be, for example, a laminate in which the surface layer of the base sheet such as a plastic layer is a material layer having a liquid absorbing property and elasticity such as paper.

[0050]

According to the invention of claim 1, the penetration promoting agent is applied to the surface of the image carrier to which the image forming substance is adhered by the penetration promoting agent applying means, thereby The destabilizing agent easily penetrates into the interface between the image carrier and the image-forming substance. Then, the destabilizing agent imparting means imparts the destabilizing agent to the image carrier to which the penetration enhancer is imparted, whereby the destabilizing agent is efficiently and reliably applied to the interface portion. Will be able to penetrate into. Thus, when the destabilizing agent permeates the interface, the characteristics of the image carrier, the image-forming substance, or both of the interface change,
Since it becomes possible to reliably make the adhesion state unstable, such as reducing the adhesive force between the image holding member and the image forming substance, be sure to remove only the image forming substance from the image holding member. The effect is that you will be able to.

According to the invention of claim 2, the penetration promoting agent is applied to the surface of the image holding member by the penetration promoting agent applying means, whereby the image holding member and the image forming substance are separated from each other. The destabilizing agent easily penetrates into the interface. Then, the destabilizing agent imparting means imparts the destabilizing agent to the image carrier to which the penetration enhancer has been imparted and to which the image forming substance has adhered, whereby the destabilizing agent is imparted. The agent can be efficiently and reliably penetrated into the interface. Thus, when the destabilizing agent penetrates into the interface, the properties of the image carrier, the image-forming substance, or both at the interface change and the adhesion between the image carrier and the image-forming substance changes. Since the adhesion state can be surely made unstable by reducing the adhesion force, it is possible to reliably remove only the image forming substance from the image holding member.

According to the invention of claim 3, the penetration promoting agent is applied to the image carrier to which the image forming substance can be attached by the penetration promoting agent applying means, whereby the image supporting body is provided. The destabilizing agent easily penetrates into the interface between the image forming substance and Then, the destabilizing agent imparting means imparts the destabilizing agent to the image carrier to which the penetration enhancer is imparted, whereby the destabilizing agent is efficiently applied to the image carrier. And, it becomes possible to surely permeate or to coat the image carrier. Therefore, when the image forming substance adhering to the image holding member is removed after the image is formed on the image holding member, the adhering state between the image holding member and the image forming substance decreases, such as the adhesion state. There is an effect that it becomes an unstable state and only the image forming substance can be surely removed from the image holding member.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a toner removing device according to an embodiment.

FIG. 2 is a schematic configuration diagram of a liquid applying unit of the toner removing device.

FIG. 3 is a schematic configuration diagram of a liquid applying device of the liquid applying unit.

FIG. 4 is a schematic configuration diagram of a liquid applying device according to a modification.

FIG. 5 is a schematic configuration diagram of a liquid applying device according to another modification.

FIG. 6 is a schematic configuration diagram of a liquid applying device according to still another modification.

FIG. 7 is a schematic configuration diagram of a liquid applying device according to still another modification.

FIG. 8 is a schematic configuration diagram of a liquid applying device according to still another modification.

FIG. 9 is a schematic configuration diagram of a liquid applying device according to still another modification.

FIG. 10 is a schematic configuration diagram of a liquid applying device according to still another modification.

FIG. 11A is a schematic configuration diagram of a liquid applying device according to still another modification. (B) is a perspective view of a processing head of the liquid applying device.

FIG. 12 is a schematic configuration diagram of a liquid applying device according to still another modification.

FIG. 13 is a schematic configuration diagram of a transfer paper processing apparatus according to an embodiment.

[Explanation of symbols]

 2 Liquid applying unit 2a Permeation promoting liquid applying device 2b Treatment liquid applying device 10 Transfer paper 20 Treatment liquid 21 Permeation promoting liquid 22 Liquid

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Ryo Shingu Kei 1-3-3 Nakamagome, Ota-ku, Tokyo Within Ricoh Co., Ltd. (72) Shinichi Kuramoto 1-3-6 Nakamagome, Ota-ku, Tokyo No. of Ricoh Company (72) Inventor Sadao Takahashi 1-3-6 Nakamagome, Ota-ku, Tokyo Within Ricoh Company, Ltd. (72) Yoshiyuki Kimura 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Company (72) Inventor Kazuhiro Ando 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Tadashi Saito 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company

Claims (3)

[Claims] 1. An apparatus for removing an image-forming substance from an image carrier, which removes the image-forming substance from the image-bearing member having the image-forming substance stably attached to the surface thereof, wherein the surface and the image-forming substance are separated from each other. The penetration degree accelerator that promotes the penetration of the destabilizing agent that makes the adhesion state of the
Penetration promoting agent applying means for applying the image forming substance to the image carrier, and destabilizing agent for applying the destabilizing agent to the image carrier to which the penetration promoting agent is applied. An image forming substance removing device from an image holding member, characterized in that an applying means is provided. 2. A device for removing an image-forming substance from an image-holding member, which removes the image-forming substance from an image-bearing member having the image-forming substance stably attached to the surface, wherein the surface and the image-forming substance are The penetration degree accelerator that promotes the penetration of the destabilizing agent that makes the adhesion state of the
Penetration promoting agent applying means for applying to the image carrier, and a destabilizing agent for applying the destabilizing agent to the image carrier to which the penetration promoting agent is applied and to which the image forming substance is attached. An image forming substance removing device from an image holding member, characterized in that an applying means is provided. 3. An image forming substance is attached with a penetration enhancer which accelerates the permeation of a destabilizing agent which makes the state of attachment between the surface of the image carrier and the image forming substance unstable. And a destabilizing agent imparting means for imparting the destabilizing agent to the image bearing body to which the permeation enhancing agent has been imparted. An image carrier processing device characterized by the above.