JPH0859009A - Conveying device for sheet-shaped media - Google Patents

Abstract

PURPOSE: To cause no jamming and wrinkles in a device for conveying sheet- shaped media from the inside to the outside of liquid and vice versa, by conveying the sheet-shaped media to the inside and outside of liquid in a face- contact condition with the sheet-shaped media for prevention of the media from running along a liquid surface. CONSTITUTION: In this conveyance device 5, a paper sheet fed through a conveyance passage P along guides 27, 28 is clamped between belts 32, 35 moving in the arrow directions (a), (b) after its end part is inserted in the inlet 37 of a contact surface 26. The sheet, while coming into face-contact with belts 32, 35, is conveyed alone the contact surface 26 into the liquid W from the air according to their movement. The sheet which has entered the liquid W is discharged along a conveyance passage P between guides 24, 25 and is fed to the next device. The sheet is clamped in a face-contact condition between the belts 32, 35 from the outlet 36 of the contact surface 26 of respective belts, and is conveyed into the liquid W completely, so it is possible to prevent the sheet from running along a liquid surface while it is entering, and wrinkles from occurring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for transporting a sheet-like medium such as a paper sheet or a film sheet from the outside of a liquid to the inside of a liquid or from the inside of a liquid to the outside of a liquid.

[0002]

2. Description of the Related Art As a device for transporting a sheet-like medium from the outside of a liquid to the inside of a liquid, or from the inside of a liquid to the outside of a liquid, for example, a sheet on which an image is formed by toner is immersed in a toner dissolving liquid or a toner peeling liquid. There is known a device that removes toner from this sheet and reproduces it. In this type of apparatus, the sheet is immersed in the liquid from the air, and the sheet is taken out of the liquid into the air and dried, so that an apparatus for transporting the sheet into or out of the liquid is required.

Conventionally, an apparatus shown in FIG. 6 (or FIG. 7) is known as an apparatus for transporting a sheet-shaped medium from the inside of the liquid to the outside of the liquid. The conveying device 40 includes a sheet loading side roller pair 41 provided inside the liquid, a sheet discharging side roller pair 42 provided outside the liquid, and these roller pairs 4
1 and 42, one end of which is fixed in the liquid near the roller pair 41, and the other end of which is positioned outside the liquid near the roller pair 42 and is fixed respectively. ing. The roller pairs 41 and 42 are respectively connected to a drive source (not shown) and are rotatable in the arrow direction. Further, the upper guide 43 and the lower guide 44 are arranged in parallel, and a sheet conveying path 45 is formed obliquely between them.

In the transport device 40 having the above-mentioned structure, the sheet M from which the toner has been removed and which has been transported in the liquid
Are introduced into the sheet conveying path 45 based on the rotation of the roller pair 41. The sheet M introduced into the sheet conveying path 45 is
The liquid is conveyed from the inside of the liquid into the air along the upper guide 43 and / or the lower guide 44, and its tip end is nipped by the roller pair 42. Then, the sheet M is sent out from the sheet conveyance path 45 based on the rotation of the roller pair 42, and is conveyed to the next drying device (not shown).

[0005]

However, even if an attempt is made to cause a sheet-like medium to enter the liquid from the air, the medium may flow along the surface of the liquid, so that the medium may not enter the liquid well. Conversely, when attempting to eject the medium from the liquid into the air, the medium may likewise flow along the liquid surface, so that the medium may not be ejected successfully. For this reason, as described above, the conventional transporting device is provided with the guide for assisting the transport of the sheet-shaped medium, but this guide becomes a resistance, and the jam easily occurs as shown in FIG. This is because the sheet is wet on the discharge side and sticks to the guide. Also,
On the inrush side, the guide itself may get wet due to shaking of the liquid surface or jam treatment that was previously performed,
A sheet may stick to the guide and cause a jam. As a countermeasure against this, as shown in FIGS. 8 and 9, it is known that the guide is constituted by the wire 46 or the rib 47, but in this case, the sheet itself is corrugated due to the weight of the wet sheet M on the discharge side, Heat roller 48 as it is
When the sheet is dried at 1, there is a problem that wrinkles are formed on the sheet M. Further, apart from the above problem, as shown in FIG. 7, the sheet sent from the pair of rollers on the discharge side may be wound around as the one roller on the discharge side rotates. Furthermore, if the sheet is pinched by the discharge-side roller pair in a wavy state, wrinkles are formed, and if the sheet is dried with the wrinkles formed, the wrinkles become permanent. Therefore, there is a problem that it becomes unsuitable for reuse.

[0006]

Therefore, the present invention has been made in view of the above problems, and the invention of claim 1 provides a sheet-like medium from inside the liquid to outside the liquid or from outside the liquid to inside the liquid. The transporting device is characterized in that it is provided with transporting means for transporting the sheet-shaped medium into and out of the liquid in a state of being in surface contact with the sheet-shaped medium.

According to a second aspect of the present invention, in a device for transporting a sheet-shaped medium from the inside of a liquid to the outside of a liquid, a sheet-shaped medium is transported from the inside of the liquid to the outside of the liquid while being in surface contact with the sheet-shaped medium. It is characterized in that it is provided with a means and a heating means provided at a position outside the liquid in the vicinity of the contact surface between the conveying means and the sheet-shaped medium.

[0008]

In the first aspect of the present invention, the sheet-shaped medium is conveyed by the conveying means from the outside to the inside of the liquid or from the inside to the outside while making surface contact. According to the second aspect of the invention, the sheet medium is heated and dried at the same time as being conveyed by the heating means provided in the vicinity of the contact surface between the sheet medium taken out of the liquid to the outside of the liquid and the conveying means.

[0009]

According to the present invention having the above-described structure, the sheet-like medium does not flow along the liquid surface, and is reliably conveyed into and out of the liquid. Moreover, wrinkles are not formed on the sheet-shaped medium. According to the second aspect of the invention, the sheet-shaped medium suitable for reuse can be reliably obtained.

[0010]

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
The main body 2 is provided with a storage tank 3 for the deinking liquid W (described in detail later). 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 is conveyed along the conveyance path P indicated by the dotted line.
The transporting device 5 invades the deinking liquid W obliquely. The sheet M that has entered the deinking liquid W is switched to the horizontal transport direction by the first transport direction conversion device 6 and supplied to the sheet storage unit 7. The sheet accommodating portion 7 is provided with a plurality of sheet accommodating decks 8 arranged in multiple stages in order to hold the immersed sheet for a certain period of time, and the direction is changed by the first conveying direction changing device 6. The sheets M are introduced one by one to the decks 8 of each tier. While the sheet M is accommodated in the deck 8, all or a part of the toner attached to the sheet M is dissolved in the deinking liquid or swells and is easily peeled off. The sheets M held on the deck 8 for a certain period of time are discharged in the order of introduction, and the second conveyance direction changing device 9
And is turned to be supplied to the U-turn transport unit 10. In the U-turn transport unit 10, the sheet M is turned obliquely upward and supplied to the toner removing device 11. The toner removing device 11 mechanically removes the toner remaining on the surface of the sheet. A brush roller is preferably used as the toner removing device 11, and the toner is removed by contact with the brush. Next, the sheet M is taken out from the deinking liquid W by the second transport device 12, is dried to a reusable state while passing through the drying device 13 having a heater, and is discharged from the discharge unit 1.
It is discharged to 4.

Next, the first conveying device 5 for injecting the sheet M into the deinking liquid W will be described in detail with reference to FIG. The first transport device 5 is composed of a pair of belt rollers 20 and 21 that are in surface contact with each other. Further, the guides 24, 2 provided obliquely below the first transfer device 5
5, the contact surface 26 of the pair of belt rollers 20, 21 and the guides 27, 28 provided obliquely above the first conveying device 5.
By these, a conveyance path P for the sheet M that linearly extends obliquely downward is formed.

The belt roller 20 includes a roller 30 provided in the deinking liquid W, a roller 31 disposed on the liquid surface of the deinking liquid W and obliquely above the roller 30, and Belt 3 with a predetermined width wound around rollers 30 and 31
2, the belt 32 is moved in the direction of arrow a by a drive source (not shown) connected to at least one of the rollers 30 and 31. Also,
The same applies to the belt roller 21 that is in surface contact with the belt roller 20 on the contact surface 26. The roller 33 provided in the deinking liquid W, the roller 34 provided on the liquid surface of the deinking liquid W, and the roller 34 A belt 35 wound around the rollers 33 and 34 is provided, and is driven in the direction of arrow b at the same speed as the belt 32 by a drive source (not shown) connected to one of the rollers 33 and 34. . In addition,
The belts 32 and 35 may be one wide belt,
It may be composed of a plurality of narrow belts.

In the first transporting device 5 having the above-described structure, the leading edge of the sheet M sent through the transport path P along the guides 27 and 28 is loaded into the inlet 37 of the contact surface 26. It is held between the belts 32 and 35 that move in the directions of arrows a and b. Then, the sheet M has the belts 32 and 35.
Based on these movements while being in surface contact with the ink, it is conveyed from the air into the deinking liquid W along the contact surface 26. The sheet M that has entered the deinking liquid W is discharged from the outlet 36 of the contact surface 26 of each belt along the transport path P between the guides 24 and 25, and is sent to the next first transport direction changing device 6. To be In this way, the sheet M is reliably conveyed in the deinking liquid W while being held in contact with the belts 32 and 35 in a surface contact state. Wrinkles do not flow along the sheet M, and no wrinkles are formed on the sheet M. In addition, in order to improve the adhesion with the sheet M and make the wrinkle prevention of the sheet M more preferable, the belts 32, 3
5 is preferably composed of a flexible film.

Next, the second conveying device 1 is a device for taking out the sheet M conveyed in the deinking liquid W onto the liquid surface.
2 will be described. This second transport device 12 is shown in FIG.
As shown in FIG. 5, the belt transporter has the same structure as the first transport device 5, but the moving direction of the belt roller pair 20, 21 moves in the directions of arrows c and d opposite to the first transport device 5. It is possible, and the only difference is that the conveyance path P of the sheet M is formed in a straight line obliquely upward. Therefore, each member of the second transfer device 12 is given the same reference numeral as that of the first transfer device 5 and its description is omitted.

In the second transport device 12 having the above-mentioned structure, the sheet M is moved in the direction opposite to that of the first transport device 5.
Is transported. That is, the guides 24, 2 in the deinking liquid W
The sheet M sent along the conveyance path P along 5 is loaded into the inlet 36 of the contact surface 26 at its leading end and held between the belts 32 and 35. Then, the sheet M is conveyed from the inside of the deinking liquid W onto the liquid surface along the contact surface 26 based on the movement in the directions of the arrows c and d while making surface contact with the belts 32 and 35. The sheet M taken out of the deinking liquid W is discharged from the outlet 37 of the contact surface 26 along the transport path P between the guides 27 and 28, and is sent to the next drying device 13.
As described above, even when the sheet M is taken out from the deinking liquid W, if the sheet M is conveyed above the liquid surface while being held in a surface contact state between the belts 32 and 35, in particular, the sheet M becomes the deinking liquid W. Even if the paper is soaked, the paper will not jam and stop on the liquid surface or wrinkle. Also in the second conveying device 12, the belts 32 and 35 may be made of a flexible film in order to improve the adhesion with the sheet M and more preferably prevent the wrinkles of the sheet M. desirable.

Further, as in the second transfer device 15 shown in FIG. 4, a pair of heaters 22 and 23 are provided on the liquid surface of the deinking liquid W and near the inside of the contact surface 26 of the belts 32 and 35. The belts 32 and 35 may be provided so as to face each other. In this case, the sheet M held between the belts 32 and 35 and taken out on the liquid surface of the deinking liquid W is heated from both sides by the heaters 22 and 23 via the belts 32 and 35 in the conveying process. After being dried to a reusable state, it is discharged to the conveyance path P between the guides 27 and 28.
In this way, the sheet M is in a dry state and is released from being held by the belts 32 and 35.
It is possible to prevent the sheet M from closely contacting one of the belts and winding the sheet M at the outlet 37 of the contact surface 26 of FIG. In the second transport device 15, since the sheet M is dried in the transporting process, the drying device 13 is unnecessary, but in order to make the dried state of the sheet M more complete, the drying device 13 is used. You may use together.

As the heaters 22 and 23, a heating element using electric resistance, a heating element using infrared rays, microwaves, hot air, or a combination thereof can be applied. Further, in order to prevent curling of the sheet M after drying, it is preferable that the heaters 22 and 23 are arranged so as to face each other as described above, and the sheet M is heated and dried under the same conditions as the front and back sides. The contact surfaces 26 of the and 35 are preferably formed linearly.

In the second conveying device 15, since the sheet M is heated and dried via the belts 32 and 35 held between them, the belts 32 and 35 are required to have heat resistance and air permeability. Therefore, as the material of the belts 32 and 35, metal such as stainless steel or heat resistant resin such as polyimide or polytetrafluoroethylene (PTFE) is preferably used. Further, as the shape, a belt in which a large number of vent holes are formed, a belt made of a mesh shape in which thin wires made of metal or heat resistant resin are woven are applicable.

Further, FIG. 5 shows a modification of the second transfer device 15. In the second conveyance device 16, heaters 38, 39 for drying the sheet M (for example, lamp heaters) are incorporated in the rollers 31, 34 located outside the deinking liquid W of the belt roller pair 20, 21, respectively. Therefore, the device can be downsized as compared with the second transfer device 15. Further, in the second transport device 16, the sheet M is dried by the contact surface 26 outlet 37 of the belts 32 and 35.
Since it is performed in the vicinity, the belts 32 and 35 are not required to have air permeability. Therefore, you can provide ventilation holes in the belt,
Although it is not necessary to form the belt with a mesh-shaped one, the belts 32 and 35 may be made to have air permeability in this case as well. In the second conveying device 16, the sheet M is already dried when discharged from the belt roller pair 20, 21, so that the sheet M is easily separated from the belt roller pair 20, 21 and therefore is not wound.

Next, the deinking liquid W will be described. On a recording medium such as a copy sheet, a deinking liquid for deinking a printing surface visualized by a printing material containing at least a resin is
It is one of a recording material and a component that dissolves or swells the resin of the printing material, a component that has an action of aggregating the printing material after deinking to prevent the deinking printing material from adhering to the paper again. It is necessary to have components that swell the fibers of the paper and make the printing material easily detach from the paper fibers, components that enhance the penetrability of the deinking liquid into the printing materials and paper, and contribute to shortening the deinking time. It is compounded and manufactured accordingly. Examples of components that dissolve or swell the resin of the printing material include divalent organic acid monoesters, glycol esters, and other organic solvents.

The divalent organic acid monoester will be specifically described. As the divalent organic acid of the monoester of the divalent organic acid, a saturated or unsaturated fatty acid such as oxalic acid,
Malonic acid, succinic acid, 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, mazelaic acid and sebacic acid are preferable.

Examples of alcohol components of monoesters of divalent organic acids include monohydric alcohols such as methanol, ethanol, propanol, butanol and pentanol.
(It may be linear or branched), polyhydric alcohols such as ethylene glycol, glycerin, pentaerythritol and sorbitol, diethylene glycol,
Glycols such as 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 following general formula:

[0024]

HOOC- (CH ₂ ) n-COOR ₁ (wherein R ₁ represents an alkyl group having 1 to 5 carbon atoms, and n is 0
Represents an integer of 8).

Specifically, oxalic acid monoester (HO
OC-COOR ₁ ), malonic acid monoester (HOOC-
CH ₂ -COOR _1), succinic acid monoester (HOOC-
_{(CH 2) 2 -COOR 1)} , glutaric acid monoester (HO
_{OC- (CH 2) 3 -COOR 1} ), adipic acid monoester
_{(HOOC- (CH 2) 4 -COOR} 1), pimelic acid monoester _{(HOOC- (CH 2) 5 -COOR} 1), suberic acid monomethyl ester _{(HOOC- (CH 2) 6 -COOR} 1), mono azelaic acid ester (HOOC- (CH _{2) 7} -COO
R _1), sebacic acid monoester (HOOC- (CH _{2) 8} -
COOR ₁ ) and the like can be mentioned. 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 carboxylic acid groups, 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 monoisopropylene ether, ethylene glycol monobutyl ether, ethylene glycol monoisoamyl ether, diethylene glycol monomethyl ether, diethylene glycol. Examples include monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene monomethyl ether, etc., and 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. When it is less than 5% by weight, the swelling property and solubility in the printing material are poor and there is no deinking effect, and when it is more than 95% by weight, the solubility in the printing material becomes too high and it is easy to re-adhere to paper.

More specifically, other organic solvents include those which are not mixed with water and dissolve or swell the toner. For example, benzene, toluene, xylene, dichloromethane, methyl ethyl ketone, methyl acetate, ethyl acetate, ethyl ether, propylene ether, butyl ether, diisobutyl ether, 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 the deinking liquid used is 10 to 70% by weight, preferably 20 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, the component having an action of aggregating the printing material such as toner after deinking is, for example, a surfactant, a higher fatty acid or 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.

Fatty acid salts as anionic surfactants,
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, polyoxylene 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.

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 formula; RO
(CH ₂ CH ₂ O) nH (wherein R represents a C21 to C22 alkyl group or an alkylphenyl group, nH represents an integer of 1 to 10) and is an ethylene oxide addition-type nonionic surfactant. .

The surface-active agent encloses the deinked printing material and has the effect of preventing re-adhesion to the recording medium. further,
When the recording medium is paper such as plain paper, it also has an action of entering the inside of the stitch structure of the paper to enclose 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 re-adhering 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 mentioned as a component which 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 in the entire deinking solution is 1 to 90% by weight of the deinking solution, preferably 30
-80% by weight. If the amount of water used exceeds 90% by weight, the fibers of the paper will be destroyed, and 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 oil, whale oil and the like containing these higher fatty acids can also be used.

It is desirable that the organic acid is contained in the deinking solution in an amount of 1 to 10% by weight. The function of the organic acid used in the present invention in the deinking action is not necessarily clear, but the penetrability of the deinking agent of the present invention into toner and paper is improved, the deinking time is shortened, and the efficiency is improved. It is considered to have a deinking effect.

To the deinking agent of the present invention, for example, methanol, ethanol, n-butanol, isopropanol, ethoxyethanol and the like may be added 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 higher fatty acid and / Or higher fatty acid ester, surfactant, water), (organic solvent, surfactant, water) and the like can be exemplified, but it goes without saying that 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 of a conveyance device that allows a sheet to enter a liquid.

FIG. 3 is a cross-sectional view of a conveyance device that takes out a sheet from the liquid.

FIG. 4 is a cross-sectional view of a conveyance device that includes a heating unit and that takes out a sheet from the liquid.

5 is a cross-sectional view of a modified example of the transfer device shown in FIG.

FIG. 6 is a schematic diagram for explaining a problem of a conventional transfer device.

FIG. 7 is a schematic diagram for explaining a problem of a conventional transport device.

FIG. 8 is a perspective view of a conventional transfer device.

FIG. 9 is a perspective view of a conventional transfer device.

[Explanation of symbols]

1 ... Playback device, 5, 12, 15, 16 ... Transport device, 20, 2
1 ... Belt roller, 22, 23, 38, 39 ... Heater, W
... deinking liquid

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor ▲ Yoshi ▼ Masahiro Ta, 2-3-3 Azuchi-cho, Chuo-ku, Osaka-shi, Osaka, Minolta Co., Ltd. (72) Inventor Takuji Yamamoto, Osaka-shi, Osaka 2-3-13 Azuchi-cho, Osaka-ku International Building Minolta Co., Ltd. (72) Inventor Haruhiko Shinko 2-3-3 Azuchi-cho, Chuo-ku, Osaka-shi, Osaka Osaka International Building Minolta Co., Ltd.

Claims (2)

[Claims] 1. A device for transporting a sheet-shaped medium from outside the liquid into the liquid or from the inside of the liquid to the outside of the liquid, and a transport means for transporting the sheet-shaped medium into and out of the liquid while being in surface contact with the sheet-shaped medium. A conveyance device for sheet-shaped media, comprising: 2. A device for transporting a sheet-shaped medium from the inside of a liquid to the outside of the liquid, and a transport means for transporting the sheet-shaped medium from the inside of the liquid to the outside of the liquid in a state of being in surface contact with the sheet-shaped medium. And a heating means provided at a position outside the liquid near the contact surface between the sheet-shaped medium and the sheet-shaped medium.