JPH082776A - Conveyer for sheet-shaped medium - Google Patents

Abstract

PURPOSE:To suppress occurrance of a jam by providing a liquid injecting means, injecting a liquid toward a conveying path where a sheet-shaped medium must be next advanced, in the vicinity of a conveying direction changing part, in a conveyer of conveying the sheet-shaped media in the liquid. CONSTITUTION:In a regenerator immersing a sheet, formed with an image by toner, in a deink liquid from a paper feeder 4 regenerated by removing the toner from the sheet, the sheet immersed in the deink liquid is transfer fed diagonally downward along guides 35, 36, to lead to a conveying direction changer 5. In the case of receiving the sheet to a deck 7, for instance, in the second stage from above, by opening a corresponding valve 40, the deink liquid is injected toward an introducing path 30 in the second from a nozzle 38. Thus by a flow of the deink liquid in a conveying direction changing part 47, the sheet, while restricting its transfer feed direction, is guided toward the introducing path 30. Thereafter, the sheet is conveyed to a receiving deck part 22 by paired introducing rollers 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for conveying sheet-like media such as paper and film sheets in a liquid.

[0002]

2. Description of the Related Art Conventionally, as a device for processing a sheet-like medium in a liquid while carrying it, a sheet on which an image is formed with toner is dipped in a toner dissolving liquid or a toner peeling liquid to remove the toner from the sheet. A device for playing back is then known. In this type of device, there is a portion that changes the conveying direction of the sheet in the liquid because the sheet must be immersed in the liquid from the air and the sheet processed in the air must be removed from the liquid. To do.

[0003]

However, when a sheet-shaped medium is generally immersed in a liquid, its stiffness becomes weak. Especially, in the case of a paper composed of pulp fibers, the strength is remarkably lowered, and the guide plate alone makes it difficult to convey the sheet. However, there is a problem in that there is an extremely high risk that the sheet will be jammed at the transport direction changing section.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention functions without or with mechanical means,
Provided is a sheet-shaped medium conveying device having a mechanism capable of changing the direction of a sheet at the conveying direction change point without jamming, and the conveying device includes a sheet-shaped medium conveying path and a conveying path for the sheet-shaped medium. It is characterized in that it is provided with a conveyance direction changing portion provided and a liquid ejecting means which is provided in the vicinity of the conveyance direction changing portion and ejects liquid toward a conveyance path into which the sheet-shaped medium should enter next. Have.

[0005]

According to the above construction, the sheet-shaped medium that has reached the conveying direction changing portion is a liquid ejecting means for ejecting the liquid toward the intended conveying path to which the medium is next conveyed. Guided by the flow, the direction is changed toward the intended transport path.

[0006]

According to the sheet-shaped medium conveying apparatus of the present invention, the medium is conveyed in the conveying direction changing section.
Since the direction is switched by being guided by the flow of the liquid ejected from the liquid ejecting means without using mechanical means or together with the mechanical means, it is less likely that the medium is jammed at the transport direction changing portion.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an apparatus 1 for immersing a sheet on which an image is formed with toner in a deinking liquid, removing the toner from the sheet, and reproducing the sheet. This playback device 1
Is a storage tank 3 for the deinking liquid W (described in detail later) in the main body 2.
It has. The sheet-shaped medium as the material to be processed, that is, the copy sheet M, is stacked on the sheet feeding unit 4 attached to the main body 2, and obliquely enters the deinking liquid W along the transport path P indicated by the dotted line, and The conveyance direction changing device 5 changes the conveyance direction to the horizontal direction and supplies the sheet to the sheet storage unit 6. The sheet conveying section 6 removes the immersed sheet from the deinking liquid W.
In order to hold the sheet M for a certain period of time, a plurality of sheet accommodating decks 7 arranged in multiple stages are provided, and the sheets M whose direction is changed by the first conveying direction changing device 5 are distributed to the decks 7 of the respective stages. It is introduced one by one. While the sheet is accommodated in the deck 7, all or part of the toner adhering to the sheet M is dissolved in the deinking liquid W or swells and is easily peeled off. The sheets M held on the deck 7 for a certain period of time are discharged in the order of introduction, and are turned obliquely downward by the second feeding direction changing device 8 to be supplied to the U-turn feeding unit 9. At the U-turn transport unit 9, the sheet M is turned obliquely upward and is supplied to the toner removing device 10. The toner removing device 10 mechanically removes the toner remaining on the surface of the sheet. A brush roller is preferably used as the toner removing device 10, and the toner is removed by contact with the brush. Next, the sheet M is taken out from the deinking liquid W by a take-out device 11 having a conveying device such as a pair of rollers, and then the water is squeezed out by a squeezing device 12 having a pair of rubber rollers, and dried with a heater. It is dried by the device 13 to a reusable state and discharged to the discharge unit 14.

FIG. 2 shows the sheet accommodating portion 6, the first conveying direction changing device 5 and the second conveying direction changing device 8.
This will be described in detail with reference to FIGS. As shown in these drawings, each deck 7 of the sheet storage unit 6 includes an introduction deck unit 21, a storage deck unit 22, and a re-feeding deck unit 23 from the entrance side. These deck parts 21,2
2 and 23 are provided with upper guides 24, 26, 28 and lower guides 25, 27, 29, respectively.
4 and 25, 26 and 27, 28 and 29, the conveying path P
An introducing path 30, a containing path 31, and a re-feeding path 32 that form a part of the sheet are formed respectively. The introduction deck portion 21 is provided with a pair of introduction rollers 33 that conveys the introduced sheet M to the accommodation deck portion 22. Further, the re-feeding deck section 23 is provided with a re-feeding roller pair 34 for discharging the accommodated sheet M. The re-feeding roller pair 34 is separated from each other when not feeding. Sheets can be introduced between the sheets and the sheets M contact each other at the time of sheet feeding.
It is designed to hold.

The first conveying direction changing device 5 is a paper feeding device 4.
It is provided with guides 35 and 36 for obliquely introducing the sheet M supplied from the sheet toward the deinking liquid W. The guide 36
A nozzle mounting portion 37 is formed on an extension of each introduction path 30 so as to face the entrance thereof. A deinking liquid jet nozzle 38 is connected to each of these nozzle mounting portions 37. The nozzles 38 may have nozzle holes 39 at equal intervals over the entire width of the sheet conveying path P, or may have openings over the entire width. Further, the deinking liquid jet nozzle 38 is connected to a deinking liquid circulating device 42 via a deinking liquid transporting pipe 41 having a valve 40, and based on the opening and closing of the valve 40, the deinking liquid circulating device 42 The sent deinking liquid W is jetted toward the corresponding introduction passage 30 via the deinking liquid transport pipe 41 and the deinking liquid jet nozzle 38.

The second conveying direction changing device 8 is provided with the re-feeding path 3
A guide 43 obliquely arranged near the outlet of No. 2 and a deinking liquid ejecting nozzle 44 for ejecting the deinking liquid W along the guide 43 in the sheet conveying direction (obliquely downward in this embodiment).
It has. The deinking liquid injection nozzle 44 is provided with the valve 4
Deinking liquid circulating device 4 via deinking liquid transport pipe 46 having
2, the deinking liquid W supplied from the deinking liquid circulating device 42 is jetted from the deinking liquid jet nozzle 44 through the deinking liquid transport pipe 46 based on the opening and closing of the valve 45. is there.

With the above arrangement, the sheet M immersed in the deinking liquid W from the sheet feeding device 4 moves obliquely downward along the guides 35 and 36. In the first transport direction changing device 5, when the sheet M is stored in the second deck 7 from the top, the corresponding valve 40 is opened and the nozzles 38 to 2 are opened.
The deinking liquid W is jetted toward the introduction path 30 of the stage. As a result, the sheet M is regulated and guided by the flow of the ejected deinking liquid W in the transport direction changing unit 47, and enters toward the introduction path 30. Next, the sheet M is conveyed to the accommodation deck portion 22 by the introduction roller pair 33 and accommodated in the accommodation path 31. At this time, the re-feed roller pair 3 of the re-feed deck unit 23
4 are separated from each other, and the leading end of the sheet M is introduced between them.

When the sheets M are accommodated in the accommodating passages 31 of the respective stages in this manner, the sheet re-feeding deck section 2 that accommodates the sheet M first introduced among the accommodated sheets M.
The sheet re-feeding roller pair 34 of 3 abuts and holds the sheet M,
The sheet M is discharged based on the rotation of the refeed roller pair 34. Next, in the second conveyance direction changing device 8, the deinking liquid W is supplied from the deinking liquid circulation device 42 to the deinking liquid injection nozzle 44 through the deinking liquid transport pipe 46 by opening the valve 45, and the guide is performed. Deinking liquid W is jetted along 43.
Therefore, the sheet M discharged from the re-feeding path 32 is
In the transfer direction changing unit 48, the transfer direction is switched to the disposition direction of the guide 43 by being regulated by the deinking liquid W ejected from the nozzle 44, and the U-turn transfer path 9 is arranged along the guide.
Sent to

As described above, the conveying direction changing devices 5 and 8 are provided.
According to this, the sheet is regulated by the flow of the deinking liquid W and guided by the flow of the deinking liquid W, and the conveyance direction is switched, without using mechanical means. Therefore, the sheet M is less likely to be jammed, the jam processing time is reduced, and the sheet can be efficiently processed in terms of time.

In the above embodiment, the inlet of the introduction path 30 is always open, but as shown in FIG.
A gate 48 is provided near the entrance of each introduction path 30,
The inlet of the introduction path 30 may be opened only when the sheet M is introduced. This reduces the risk of the sheet M entering the introduction path 30 other than the intended introduction path.

Further, it is not necessary to separately provide an introducing device and an ejecting device corresponding to the introducing passage 30 and the re-feeding passage 32 of each stage, and it is possible to downsize the device and reduce the cost.

The deinking liquid 16 will be described. A deinking solution for deinking a printing surface visualized by a printing material containing at least a resin on a recording medium such as a copy sheet is a component that dissolves or swells the resin of the printing material, and the deinked printing material is re-papered. A component that has the function of aggregating the printing material after deinking to prevent it from adhering to the paper, swelling the fibers of the paper, which is one of the recording materials, and makes the printing material easily detach from the paper fibers. When necessary, the components, components that contribute to the shortening of the deinking time by increasing the penetrability of the deinking liquid into the printing material and the paper, and the like are mixed and manufactured. Examples of components that dissolve or swell the resin of the printing material include divalent organic acid monoesters, glycol ethers, and other organic solvents.

The divalent organic acid monoester will be specifically described. Examples of the divalent organic acid of the monoester of the divalent organic acid include saturated or unsaturated fatty acids such as oxalic acid, malonic acid, succinic acid and glutaric acid. , Adipic acid, pimelic acid, suberic acid, mazelaic acid, sebacic acid, maleic acid or fumaric acid, or aromatic fatty acids such as phthalic acid, isophthalic acid and terephthalic acid can be used. Among these, saturated fatty acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid and sebacic acid are preferable.

Examples of the alcohol component of the monoester of a divalent organic acid include monohydric alcohols (which may be linear or branched) such as methanol, ethanol, propanol, butanol and pentanol, ethylene glycol and glycerin. Polyhydric alcohols such as pentaerythritol and sorbitol, glycols such as diethylene glycol, dipropylene glycol and polyethylene glycol, or cellosolves such as ethyl cellosolve and butyl cellosolve can be used.
These alcohols can be used alone or in admixture of two or more.

The monoester of a divalent organic acid is provided by an esterification reaction of the above divalent organic acid with an alcohol or by a hydrolysis reaction of a diester of a divalent organic acid. Preferred monoesters of divalent organic acids have the general formula:

[0020]

Embedded image HOOC- (CH ₂ ) _n —COOR ₁ (in the formula, R 1 represents an alkyl group of carbon acids 1 to 5 and n represents an integer of 0 to 8).

Specifically, oxalic acid monoester (HO
OC-COOR ₁ ), malonic acid monoester (HOOC
-CH ₂ -COOR _1), succinic acid monoester (HOO
_{C- (CH 2) 2 -COOR 1} ), glutaric acid monoester _{(HOOC- (CH 2) 3 -COOR} 1), adipic acid monoester _{(HOOC- (CH 2) 4 -COOR} 1),
Pimelic acid monoester (HOOC- (CH _{2) 5} -CO
OR ₁ ), suberic acid monoester (HOOC- (C
H _{2) 6} -COOR _1), azelaic acid monomethyl ester (H
_{OOC- (CH 2) 7 -COOR 1} ), sebacic acid monoester _{(HOOC- (CH 2) 8 -COOR} 1) and the like. Of course, the divalent organic acid monoester may be used alone or in combination of two or more kinds.

The divalent organic acid monoester is mixed with water, which is a material that swells the fibers of the recording material paper due to the presence of a carboxylic acid group and makes the printing material easily detach from the paper fibers. It dissolves and has excellent penetrating power to printing materials. Due to the presence of ester groups, swelling in toner,
It is considered that the dissolving power is secured.

The total amount of the deinking solution used is 5 to 60% by weight, preferably 20 to 40% by weight. 5
If it is less than wt%, the swelling property and solubility in the printing material will be inferior and there will be no deinking effect. If it is more than 60 wt%, the dissolving power in the printing material will be too high and it will easily re-adhere to paper.

Next, the glycol ether will be specifically described. For example, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monoisoamyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether. Ethyl ether,
Examples thereof include diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene monomethyl ether, etc. One kind or a mixture of two or more kinds may be used.

The glycol ether also has a penetrability into paper. The total amount of the deinking solution used is 5 to 95% by weight, preferably 10 to 80% by weight. If the amount is less than 5% by weight, the swelling property and the solubility to the printing material are inferior and the deinking effect is not exerted, and if it is more than 95% by weight, the dissolving power to the printing material is too high and the redepositing on the paper easily occurs.

More specifically, the other organic solvents include those which do not mix with water and dissolve or swell the toner. For example, benzene, toluene, xylene, dichloromethane, methyl ethyl ketone, methyl acetate, ethyl acetate, ethyl ether, propyl ether, butyl ether, diisobutyl ketone, butyl acetate, ethyl butyl acetate, methyl propionate, ethyl propionate and the like are preferably used. These organic solvents may be used alone or in admixture of two or more. The total amount of deinking liquid added is 10 to 70% by weight, preferably 2
It is used in the range of 0 to 60% by weight. If the amount is less than 10% by weight, the swelling property and the solubility to the printing material are inferior and the deinking effect is not obtained, and if the amount is more than 70% by weight, the dissolving power to the printing material is too high and the redepositing on the paper easily occurs.

In order to prevent the deinked printing material from adhering to the paper again, examples of the component having an action of aggregating the printing material such as toner after deinking include a surfactant, a higher fatty acid and a higher fatty acid. Esters can be mentioned.

The surfactant will be specifically described below.
Anionic surfactants, nonionic surfactants, cationic surfactants and amphoteric surfactants can be used.
Conventionally, a surfactant has been used as a deinking agent for pulped waste paper, but when the printing material is a resin, the deinking action is very effective even if the surfactant alone is directly applied to the recording medium. Since it is weak, the present invention preferably contains a component that dissolves or swells the resin as described above.

As the anionic surfactant, fatty acid salts,
Alkyl sulfate ester salts, alkylbenzene sulfonates, alkylnaphthalene sulfonates, alkyl sulfosuccinates, alkyl diphenyl ether disulfonates, alkyl sulfosuccinates, naphthalene sulfonic acid formalin condensates, polycarboxylic acid polymer surfactants, etc. It can be preferably used.

As the nonionic surfactant, polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, oxyethylene-oxypropylene copolymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylamine and the like are preferable. Can be used for.

As the cationic surfactant or amphoteric surfactant, alkylamine salts, quaternary ammonium salts, alkylbetaines, amine oxides and the like are preferable. Each of the above surfactants may be used alone or in combination of two or more. A particularly preferred surfactant has the chemical formula: RO
(CH ₂ CH ₂ O) _n H (wherein R represents a C21 to C22 alkyl group or an alkylphenyl group, n represents an integer of 1 to 10) and is an ethylene oxide addition-type nonionic surfactant. is there.

The surface-active agent surrounds the deinked printing material and has the effect of preventing re-adhesion to the recording medium. further,
When the recording medium is plain paper or the like, it also has an action of entering the inside of the stitch structure of the paper to surround the printing material and facilitating deinking of the printing material that has penetrated deep into the fiber. Furthermore, when the liquid that dissolves or swells the printing material is insoluble in water and water is used as the deinking agent, it also has a function of forming a stable deinking liquid of an O / W type emulsion.

The amount added in the entire deinking solution is 0.1-10.
It is used in the range of wt%, preferably 0.1 to 5 wt%. If it is less than 0.1% by weight, the above effect is difficult to obtain, and if it is more than 10 parts by weight, bubbles and the like increase and handling becomes difficult.

The higher fatty acid will be specifically described below.
For example, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, ricinoleic acid, linoleic acid, linolenic acid, eleostearic acid, arachidic acid, arachidonic acid, behenic acid, erucic acid, abietic acid. , Rosin acid, coconut oil, linseed oil, beef oil, tall fatty acid, phytic acid and the like.

The higher fatty acid ester is a higher fatty acid and a hydroxy compound, for example, alcohols such as methyl alcohol, ethyl alcohol, propyl alcohol and butyl alcohol, ethylene glycol, glycerin, pentaerythritol, sorbitol, diethylene glycol and dipropylene glycol. Ester compounds with polyhydric alcohols are preferred.

The higher fatty acid and / or higher fatty acid ester has a function of aggregating the deinked printing material and preventing it from reattaching to the recording medium. The amount added in the entire deinking solution is 5 to 95
It is used in an amount of 20% by weight, preferably 20 to 80% by weight. If it is less than 5% by weight, the cohesive effect is lowered, and if it is more than 95% by weight, the effect of the liquid for dissolving or swelling the printing material is lowered.

Water is an example of a component that swells the fibers of paper, which is one of the recording materials, and makes the printing material easily detach from the paper fibers. The amount of water added to the entire deinking solution is 1 to 90% by weight, preferably 30 to 80% by weight based on the entire deinking solution. 90% by weight of water used
If it exceeds, the fibers of the paper will be destroyed, and the drying after deinking will take too much labor, which is not preferable. If the amount of water used is less than 1% by weight, the effect of spreading the fibers of the paper cannot be obtained, and the deinking agent cannot properly permeate into the paper. An appropriate amount is set according to the type of liquid that dissolves or swells the resin.

As a component that enhances the penetrability of the deinking liquid into the printing material and the paper and contributes to shortening the deinking time, for example, an organic acid can be mentioned. Specifically, saturated aliphatic carboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid,
Pymic acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, etc., unsaturated aliphatic carboxylic acids such as acrylic acid, propiolic acid, methacrylic acid, crotonic acid, oleic acid, lenolic acid , Erucic acid, ricinoleic acid, abietic acid, rosin acid, or aromatic carboxylic acids such as benzoic acid, toluic acid, naphthoic acid, cinnamic acid, 2-furic acid, nicotinic acid and isonicotinic acid can be used. . These organic acids can be used alone or in admixture of two or more. Of these, higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, erucic acid, ricinoleic acid, abietic acid and rosin acid are preferred. Palm oil, linseed oil, beef tallow, whale oil and the like containing these higher fatty acids can also be used.

It is desirable that the organic acid is contained in an amount of 1 to 10% by weight based on the whole deinking agent. Although the function of the organic acid used in the present invention in the deinking action is not always clear, the deinking agent of the present invention improves penetration into toner, paper, etc., shortens deinking time, and removes efficiently. It is thought to have an effect.

The deinking agent of the present invention may contain, for example, methanol, ethanol, n-butanol, isopropanol, ethoxyethanol, etc. within a range not impairing the effects of the present invention.

As a compounding form of each component for performing deinking easily and efficiently, (divalent organic acid monoester, organic acid, surfactant, water), (glycol ether solvent, higher fatty acid and / Or higher fatty acid ester, surfactant, water), (organic solvent, surfactant, water) and the like can be exemplified, but needless to say, the combination is not limited to these.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a reproducing device having a carrying device according to the present invention.

FIG. 2 is a cross-sectional view showing a first conveyance direction changing device and a part of a sheet storage unit.

FIG. 3 is a diagram showing a state in which deinking liquid is being ejected from a nozzle of the first conveyance direction changing device.

FIG. 4 is a partial cross-sectional view of a second conveyance direction changing device.

FIG. 5 is a view showing an improved example of the first conveyance direction changing device.
It is a figure similar to.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Reproducing apparatus, 5 ... 1st conveyance direction change apparatus, 6 ... Sheet accommodating part, 30 ... Introduction path, 38 ... Injection nozzle, 47 ... Conveyance direction change part, P ... Sheet conveyance path, M ... Sheet-like medium.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takuji Yamamoto 2-3-13 Azuchi-cho, Chuo-ku, Osaka-shi, Osaka Inside the Osaka International Building Minolta Camera Co., Ltd. (72) Goji Yamamoto Chuo-ku, Osaka-shi, Osaka 2-3-3 Azuchi-cho, Osaka International Building Minolta Camera Co., Ltd. (72) Inventor Haruhiko Shinko 2-3-3 Azuchi-cho, Chuo-ku, Osaka City, Osaka Prefecture Osaka International Building Minolta Camera Co., Ltd.

Claims (1)

[Claims] 1. A transport device for transporting a sheet-shaped medium in a liquid, comprising: a transport path for the sheet-shaped medium; a transport direction changing section provided in the transport path; and a transport direction changing section provided in the vicinity thereof. And a liquid ejecting unit that ejects liquid toward a conveying path to which the sheet-shaped medium should enter next, and a sheet-shaped medium conveying device.