JPH06206358A - Oa old paper regeneration apparatus - Google Patents

Abstract

PURPOSE:To enable regeneration by an individual, in an apparatus for regenerating electrophotoelectric copy paper, by immersing a printed recording medium in a deinking agent and applying physical treatment to the printed surface of the recording medium to deink the same and cutting the deinked medium into arbitrary width. CONSTITUTION:OA old paper 6 having a toner image T containing a resin component recorded thereon is sent in the gap between a paper feed roller 8 and a sending roller 9a from the paper supply part 2 of a regeneration device 1 and sent into the deinking agent 12 of a treatment tank 11 by a feed belt 10 to be immersed in the deinking agent 12 to be subjected to deinking treatment. The deinking agent 12 is circulated through an inlet 21, an outlet 22 and a circulating passage 20 fitted with a filter 18 by a pump 19 to swell the toner image T. The OA old paper 6 is physically deinked by a print deinking means 13. The deinked OA old paper 6 is sent into a cutter part 70 to be cut into a specific dimension to be discharged to a paper discharge tray 16 as regenerated paper 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a used paper recycling apparatus such as electrophotographic copying paper, printer or facsimile.

[0002]

2. Description of the Related Art Recycling technology has been attracting attention as an earth-friendly technology from the viewpoint of resource conservation. 2. Description of the Related Art Today, copying machines have spread to all fields such as companies and offices, and a technique for recycling used copying paper has been studied, and effective use of resources is desired.

Conventionally, waste paper for copying paper has been recycled by finely cutting it, recycling it into pulp, and then deinking the toner that forms the image copied on the copying paper.

However, in the above recycling technology, it is necessary to temporarily collect and collect waste paper, and there is also a problem that the pulp recycling apparatus and the recycling apparatus are complicated, huge, expensive, etc. Inevitably, you have to rely on a specific specialist.

Further, in the conventional recycling technology, since copying paper is shredded, even if it is recycled into pulp, the pulp fiber is short, so that the resulting recycled paper is very fragile.

As a reproducing technique for solving such a problem, a print removing device is disclosed (Japanese Patent Laid-Open No. 4-89271). The device disclosed in Japanese Patent Laid-Open No. 4-89271 is a device for immersing used paper in a deinking agent, and then subjecting the used paper to a physical treatment for recycling.

However, since the physical treatment is applied after the used paper is soaked in the deinking agent, the floating toner is re-adsorbed on the used paper and the deinking effect cannot be sufficiently obtained.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and it is possible to obtain a copy paper without shredding waste paper.
It is an object of the present invention to provide a simple and easy-to-use reproducing apparatus that can be reproduced by an individual person independently of a used paper recycling specialist.

[0009]

That is, the present invention is a processing unit for immersing a printed recording medium in a deinking agent, and a physical treatment is applied to the printing surface of the recording medium in the processing unit to deink the printing. And a cutter unit capable of cutting a recording medium with an arbitrary width.

The reproducing apparatus of the present invention includes at least a processing unit,
It is configured to include a print processing unit and a cutter unit.

In the apparatus of the present invention, the recording medium printed in the processing section is immersed in the deinking agent. The deinking agent used in the processing section is basically paper or OH.
The toner resin component of the toner fixed on the P sheet, the dye component such as the charge control agent, and the colorant component such as facial dye are not dissolved, but the resin component is mainly swelled to make the toner plastic and the surface from the inside of the print recording medium. What makes the toner image stand out is suitable. As such a deinking agent, specifically, a deinking agent containing at least a higher fatty acid ester, water and a surfactant is preferable.

The fatty acid of the higher fatty acid ester is a saturated or unsaturated fatty acid such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid,
Linoleic acid, erucic acid, ricinoleic acid, abietic acid,
Examples include rosin acid, coconut oil, linseed oil, beef tallow, whale oil and the like. The higher fatty acid ester is a fatty acid and a hydroxy compound, for example, alcohols such as ethanol and n-butanol, polyhydric alcohols such as ethylene glycol and glycerin pentaerythritol sorbitol, glycols such as diethylene glycol, dipropylene glycol and polyethylene glycol, and Ethyl cellosolve,
It refers to an ester with a cellosolve such as butyl cellosolve, and tall oil fatty acid ester is particularly preferable.

The tall oil fatty acid is a fatty acid containing oleic acid and linoleic acid in a ratio of about 6: 4, and in addition, a small amount of palmitic acid, stearic acid and unsaponifiables. As the alcohol for esterifying tall oil fatty acid, ethylene glycol, polyethylene glycol, ethoxyethanol, butoxyethanol, etc., preferably butoxyethanol, ethylene glycol, ethoxyethanol are used.

As the surface active agent, an anionic surface active agent, a nonionic surface active agent, a cationic surface active agent and an amphoteric surface active agent can be used. Conventionally, a surfactant has been used as a deinking agent for pulped waste paper, but the deinking action is very weak even if the surfactant alone is directly applied to the waste paper.

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. Can be mentioned. As the nonionic surfactant, polyoxyethylene alkyl ether,
Examples thereof include polyoxyethylene alkyl allyl ether, oxyethylene-oxypropylene copolymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene alkylamine. Examples of the cationic surfactants and amphoteric surfactants include alkylamine salts, quaternary ammonium salts, alkylbetaines, amine oxides and the like. These 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) nH (wherein R represents a C _{21 to} C ₂₂ alkyl group or an alkylphenyl group, n represents an integer of 1 to 10), and an ethylene oxide addition-type nonionic surfactant Is.

By incorporating an organic acid in the deinking agent, it is expected that the deinking agent will have good penetrability into toner, paper, etc., the deinking time will be short, and deinking will be efficient. Examples of such organic acids include higher fatty acids that can be used to synthesize higher fatty acid esters, as well as formic acid, acetic acid, benzoic acid and the like.

In the deinking agent, the higher fatty acid ester is used in the range of 60 to 5% by weight, preferably 40 to 20% by weight based on the total amount of the deinking agent. If it is used in an amount of more than 60% by weight, it has a high solubility in toner and is easily redeposited on paper.

The amount of the surfactant used in the deinking agent is 0.1 to 10% by weight, preferably about 2% by weight, based on the total amount of the deinking agent. If it is used in an amount of more than 10% by weight, bubbles and the like will increase and handling will be difficult. If it is used in an amount less than 0.1% by weight, the toner once deinked will reattach to the paper.

In the deinking agent, water is 1 to 80% by weight, preferably 20 to 70% by weight, more preferably 30% by weight based on the total amount of the deinking agent.
-60% by weight. If the amount of water used is too large, the binding force between the added fibers is weakened, and the paper surface is damaged when the paper surface is rubbed with a rotating brush, web, blade, etc., or the fibers of the paper are destroyed. I will end up. Further, it is not preferable because it takes too much labor to dry after deinking. 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.

The deinking agent may be, for example, methanol, ethanol, n-butanol, within a range that does not impair the effects of the present invention.
An organic solvent that swells the toner, such as isopropanol and ethoxyethanol and a mixture of these with xylene, toluene, acetone, THF, dioxane, dichloromethane, etc., may be contained.

As such a deinking agent, Toscreen D (manufactured by Choso Sangyo Co., Ltd.) is available. Tos Screen D is a water-based detergent having an acid value of about 2.1 mg KOH / g and a specific gravity of 1.
It is a pale yellow transparent liquid having physical properties of 020 (20 ° C.) and pH: 7 ± 0.5 (15 ° C.). This deinking agent does not contain any compound of fluorine and chlorine carbon, which is said to destroy the ozone layer, and can be used without deteriorating the global environment. Furthermore, since it has low toxicity to humans and is nonflammable (no flash point), it is extremely suitable for use in a paper recycling apparatus in a normal office environment like the present invention.

The deinking agent as described above can be applied to those composed of a toner resin currently used such as a styrene-acrylic copolymer resin or an ester resin. Specifically, 100 parts by weight of polyester resin (softening point, 130 ° C .; glass transition point, 60 ° C., AV25, OHV38), 5 parts by weight of carbon black (MA # 8 manufactured by Mitsubishi Kasei Co., Ltd.) and dye (manufactured by Orient Chemical Co., Ltd.) , Bontron E-
89) 3 parts by weight of a kneading and pulverizing toner having an average particle size of 13 μm, styrene-n-butyl methacrylate resin (softening point, 132 ° C .; glass transition point, 60 ° C.) 100 parts by weight, carbon black (manufactured by Mitsubishi Kasei Co., MA # 8) 5 parts by weight and nigrosine dye (Orient Chemical Co., Bontron N
-01) 3 parts by weight of kneading and pulverizing type toner, and 100 parts by weight of styrene-acrylic copolymer resin (softening point, 132 ° C .; glass transition point, 60 ° C.), carbon black (REGAL 330R, manufactured by Cablack Co., Ltd.) An average particle size of 10 parts by weight and 3 parts by weight of a quaternary ammonium salt copolymer resin (Luna Pale 912 manufactured by Arakawa Chemical Industry Co., Ltd.)
It was particularly effective for a copied image formed from a kneading and pulverizing type toner of μm.

Further, not only the toner containing the resin component, but also the ink such as the magic ink, the fluorescent pen, the black or red ballpoint pen, the red stamp etc. written on the waste paper can be easily dissolved by the deinking agent. Moreover, most of the pencils can be erased.

Immersion conditions are appropriately set in consideration of the type of toner, the type of deinking agent, the temperature, the time, etc., and the fixed toner on the waste paper dipped in the deinking agent acts by the action of the deinking agent. It swells so that it can be easily detached from the copy paper in the subsequent print processing means. In addition, ballpoint pen, highlighter pen,
It suffices that the magic ink, ink such as red stamp and pencil, and particles are also dissolved or swelled so that they can be easily detached from the copy paper in the print processing section.

In the print processing means, the print surface of the recording medium is subjected to physical processing to deink the print. The physical treatment is that the fixed toner on the waste paper dipped in the deinking agent swells due to the action of the swelling agent and becomes plastic, and the surfactant is adsorbed and the action easily removes it from the paper. Therefore, it can be easily done by rubbing with a brush or the like. The scraped toner is suspended in the deinking agent or is precipitated as large plastic particles.

Besides rubbing with a brush or the like, a cloth belt may be used. Alternatively, it may be scraped off with a blade made of plastic or metal. Further, instead of such a solid friction method, the deinking agent may be strongly sprayed as a jet flow from the slit nozzle onto the waste paper to detach the toner. Of course, these means can be used in combination.

These desorbed toner, toner particles, dissolved ink, pencil particles, etc. are sucked from the processing section and trapped or removed by a filter filled with glass wool, activated carbon, etc., so that they are re-adsorbed on paper and spots are spotted. It is preferable to prevent it from occurring. Since the cleaned deinking agent may be returned to the processing section and used again, the deinking agent can be circulated and repeatedly used until its action is reduced. The consumption of deinking agent is also minimized, which is much more efficient than the normal recycled paper manufacturing process involving pulping.
Be economical.

In an electrophotographic toner, a dye such as nigrosine may be added in a small amount in order to control the charge, and when a deinking agent is applied to such waste paper, it is dissolved by its solvent action. It is normal. In the conventional example, a method of scraping the toner by mechanical means after applying or impregnating the deinking agent to the used paper is disclosed (Japanese Patent Laid-Open No. 4-8927).
No. 1), in this method, when the solvent is evaporated in a short time, the dye that has melted out as described above penetrates deep into the fibers of the paper and cannot be removed by mechanical means. Since it dyes paper, it has the serious drawback of not protecting confidential information and reusing paper.

In the present invention, unlike the conventional example, the deinking treatment is carried out while the used paper is immersed in a sufficiently large amount of the deinking agent, so that the melted dye or ink is also diffused in the liquid, Dyeing can be suppressed to a negligible level, characters and patterns can be prevented from being comprehended, and recycled paper with sufficient whiteness to withstand reuse can be obtained.

The waste paper immediately after being processed by the print processing means is in a state of being moistened with the deinking liquid, so that it is dried. Further, the drying may be performed by blowing heated warm air onto the paper without depending on heat transfer.

In the deinked recording medium, the paper strength, so-called paper strain, may be lower than that before deinking. In this case, for example, a polyacrylamide polymer having a molecular weight of about 1,000,000 or less, a polyvinyl alcohol polymer (PV
A), a paper strength-enhancing agent such as cationized starch may be added to perform a surface treatment for recovering the lowered paper strain.
Furthermore, sizing of paper (anti-bleeding) may be performed by surface treatment, if necessary. As the surface sizing agent, a soda salt of a copolymer of starch, styrene or α-olefin and maleic anhydride and a soda salt or an ammonium salt of a methacrylic acid alkyl ester and a methacrylic acid copolymer can be used. May be added to the surface of the deinked waste paper. Such surface treatment may be performed before or after drying.

The thus-recycled recycled paper is preferably subjected to a method of passing it between metal rolls to which pressure is applied, for repairing fine surface roughness of the paper at the time of deinking treatment and for removing creases. In addition, it repairs some of the fine holes such as stapler and polishes the paper surface.

If there is a problem in reusing with a physical defect such as a punch hole or a stapler hole,
The physical defects are removed by the cutter. For example, punched holes and staple holes are cut almost at the left side and the upper part, and can be used as recycled paper having a standard size lower than one rank, such as A4 paper → B5 paper and B5 paper → A5 paper.
Specifically, in the case of used paper with punched holes on the left side of A4 paper, or used paper with stapler holes on the upper left corner, cut the left side about 28 mm and the upper side about 40 mm to obtain 182 x 25
The paper is trimmed to a size of 7 mm and discharged to the paper discharge tray. This paper can be reused as B5 recycled paper without physical defects. In the case of the B5 size defective paper, the A5 size may be used.

Even in the case of waste paper which has no physical defects, the paper fibers which have been slightly spread apart during the deinking treatment and which have been passed between the metal rolls as they are or have been dried may be removed depending on the type. It is usually about 2 to 5 mm larger than the size before black ink. Even in this case, the cutter can cut to an accurate standard size, and even when used with new paper, there is no unsightly appearance due to misalignment or inconvenience when turning pages.

The recycled paper as described above provides a high quality copy which is almost the same as the new paper.

The reproducing apparatus of the present invention can be designed to be extremely compact, and it can be attached to a conventional copying machine to continuously reproduce used paper.

[0038]

FIG. 1 shows an embodiment of a reproducing apparatus according to the present invention. In the figure, (6) is a recording medium such as a so-called OHP sheet such as paper or polyester film on which the toner image T containing at least a resin component is recorded. These recording media are created by so-called OA devices such as conventionally known copiers, printers, and facsimiles (hereinafter (6) is referred to as “O”).
It is called "A waste paper").

The paper feed section (2) is provided in the main body of the reproducing apparatus (1), and the opening (I) into which the OA waste paper (6) is introduced, and the OA waste paper (6) are conveyed to this opening (I). It includes a paper feed tray (7) that is provided so as to be inclined. In this embodiment,
The paper feed tray (7) is configured such that the operator manually inserts the OA waste paper (6), but it may be an automatic paper feed device that is well known in the manual feed tray of a copying machine or the like.

Paper feed roller (8) and feed roller (9
In a), at least one of the rollers is made of an elastic material, for example, a roller whose surface is roughened and made of urethane. In this embodiment, the paper feed roller (8) is pressed against the feed roller (9a) with a constant pressure by sandwiching the transport belt (10) described below, and the OA waste paper fed from the paper feed tray (7) is used. The tips of (6) are rollers (8) and (9a)
It is sandwiched between and stops.

The sensor (S1) is provided when the OA waste paper (6) is placed on the paper feed tray (7) and one end of the OA waste paper (6) enters the inside of the apparatus (1) through the opening (I). A start signal is issued, and the feed rollers (9a)-(9h) are rotationally driven based on this start signal. The feed rollers (9a)-(9h) may be automatically driven by a signal from the sensor (S1), but an operator input to a switch (S2) provided separately. The start signal may be output only when is detected.

A conveyor belt (10) is wound around the feed rollers (9a)-(9h), and is rotated at a predetermined speed in the direction of the arrow by a driving means (motor or the like) not shown by the output of the start signal. Driven. And, the tip end is sandwiched between the rollers (8) and (9a).
The used paper A (6) is conveyed to a calender roll (15) through a deinking section (3) and a drying section (4) described later. In addition,
The feed rollers (9a)-(9h) may be rotationally driven by managing a predetermined time with a timer, or a sensor (S3) may be provided to ensure that the OA waste paper (6) is securely attached to the calendar roll (15). It may be configured to drive until the arrival at is detected.

The conveyor belt (10) is in the form of a thin film, an elastic body, a non-woven fabric, a cloth woven with fibers, or the like. Further, it is preferable to roughen the surface or make it into a mesh shape, because the transport force of the OA waste paper (6) is improved. The material is not limited to metal, polymer, etc., but a material that is not easily corroded by the deinking agent should be selected. A plate made of steel is preferably used.

The deinking section (3) is a processing tank (11) filled with the deinking agent (12), a feed roller (9c) completely immersed in the deinking agent (12), and approximately half the immersion. Feed rollers (9b) and (9d), a conveyor belt (10) stretched between this roller (9c) and rollers (9b) and (9d), and two places provided at the bottom of the processing tank (11) (20) that connects the inlet (21) and the outlet (22) that are the openings of the filter, the filter (18) provided in the circulation (20), the pump (19), and the deinking agent (12) It is composed of a print deinking means (13) for applying a physical force to the toner image T of the OA waste paper (6) dipped in the ink and scraping off the toner swollen by the deinking agent. As the deinking agent (12), Toscreen D (trade name: manufactured by Choso Sangyo Co., Ltd.) was used in this example.

Here, it is desirable that the distance between the roller (9b) and the roller (9d) be shorter than the length of the OA waste paper (6). This is because if this distance is longer than the length of the OA waste paper (6), the waste paper (6) will rise in the processing tank (11) and the physical processing by the print deinking means (13) may not be sufficiently performed. Because there is a nature. However, since the OA waste paper (6) is wet with the deinking agent (12), it is not possible to make the distance between the roller (9b) and the roller (9d) shorter than the length of the OA waste paper (6) in order to prevent floating. It is not always an essential configuration.

The print deinking means (13) may be in the form of a rotating brush as shown in FIG. 1, for example. As a material for such a brush, polymer fibers such as nylon, acryl and polyester are suitable so as not to scratch the surface of the OA waste paper (6). Further, although not shown, a means for collecting the swollen toner or other stains collected from the OA waste paper (6) from such means (13) may be newly provided.

The form of the print deinking means (13) is not limited to the form of a rotary brush, but a cloth belt (web) (200) stretched between drive rollers as shown in FIG. 2 or as shown in FIG. The blade (220) pressed against the roller (9c), the nozzle (230) which sprays a deinking agent at high pressure as shown in FIG. 4, etc. can be illustrated. In the case of the web (200) (Fig. 2), in order to enhance the scraping effect of this surface, one made of cloth woven with fibers,
A metal belt or the like having a roughened surface is preferable. Further, as a means for collecting the swollen toner or other dirt from the surface of the web (200), a blade may be pressed against the surface of the web (200) to scrape it into the collecting box (250). The blade (220) is made of an elastic body such as metal or rubber, and is not shown
It is preferable that the toner is scraped off from the surface of the OA waste paper (6) in combination with a spring or the like.

The deinking means (13) is the processing tank (11).
The deinking effect may be enhanced by being configured so as to move along the transport direction of the transport belt (10) or in the direction orthogonal thereto.

The circulation path (20) takes in the deinking agent (12) in the treatment tank (11) from the inlet (21) and discharges it from the outlet (22) by a pump (19).
Is provided. A filter (1) is provided on the upstream side of the pump (19) in the circulation direction of the deinking agent (12).
8) is provided to collect swollen toner and other dirt floating in the treatment layer (11). Therefore, the deinking agent in the treatment layer (11) is always kept clean. The filter (18) is constructed so that it can be replaced as needed. As the material, glass wool, activated carbon or the like can be used.

In the treatment tank (11), ultrasonic vibrating means or heater may be appropriately provided in order to enhance the deinking effect. In particular, when a heater is provided, the deinking effect may be relatively different depending on the type of deinking agent (12) used and the ambient temperature, which is effective. Although it depends on the type of the deinking agent (12), it is preferable to keep it at about 30-50 ° C.

A drying section (4) is provided on the downstream side of the processing tank (11) with respect to the moving direction of the conveyor belt (10). The drying section (4) comprises a flat surface formed between the feed rollers (9e) and (9f) and a heater (14) for heating the flat surface. This flat surface preferably has a longer length than the OA waste paper (6) to be treated. This is because the deinking agent is volatilized by heating with the heater (14), but if the deinking agent is dried in an uneven place, the dried waste paper (6) is not flat and the value of the treated waste paper is reduced. Because there is a possibility. However, since the calender roll (15) to be described later also performs a process for flattening waste paper that is not flat, it is not necessarily an essential configuration.

Further, the heater (14) does not necessarily have to perform heating by heat transfer, and may be a form using warm air or radiant heat from a xenon lamp or the like. The heating temperature is preferably optimized depending on the type of deinking agent (12) used and OA waste paper (6), but generally 40-9.
0 ° C, preferably 50-60 ° C. If it is lower than this, the drying time is long and it is inconvenient for practical use. If it is higher than this, it causes deformation when OA waste paper (6) is OHP, and it causes yellowing when it is paper. It happens.

The OA waste paper (6) which has passed through the drying section (4) is conveyed to a calender roll (15). The calender rolls (15) are a pair of metal rolls pressed against each other. OA waste paper that has been processed and dried between the rolls (6)
By passing the paper through, it is possible to repair fine scratches on the surface received by the deinking section (3), remove peculiarities such as bending, and to achieve glossiness when the OA waste paper (6) is paper. Further, when the OA waste paper (6) has a fine defect such as a stapler, it can be repaired to some extent.

A heater may be included in the calendar roll (15) so that it also has a drying function. With this structure, the drying unit (4) can be omitted.

A cutter unit (70) is provided between the drying unit (4) and the paper discharge unit (5) so that the paper can be cut in the vertical and horizontal directions with an arbitrary width. The used paper that has passed through the calendar roll (15) is sent onto the cutter pedestal (62). A more detailed configuration diagram of the cutter is shown in FIG. In response to a signal from the paper edge detection sensor (S4) in the x direction, the paper feed rollers (63) to (65) in the x direction carry the OA waste paper to a predetermined position, and the portion including the waste paper missing portion has the blade in the x direction ( 60). Next, in response to the signal from the paper edge detection sensor (S5) in the y direction, the paper feed rollers (66) to (67) in the y direction carry the waste paper to a predetermined position, and the blade (61) in the y direction causes the waste paper to be lost. The part including the part is cut. The order of cutting in the x-direction and the y-direction has no particular significance. Further, the cutter is not limited to the blade, and various types such as a wire cutter can be used.

The cut-out pieces of paper are collected in a piece-of-paper collection box (25). These papers are sent together to a specialized recycled paper factory, pulped and used again. Then, all the used paper can be used effectively and no waste occurs. From the standpoint of confidentiality, there is no problem because those scraps of paper have been sufficiently deinked.

OA waste paper (6) that has passed through the cutter section (70)
Is discharged as recycled paper (17) from the discharge section (O) onto the discharge tray (16) by the discharge roller (23).

Processing time of deinking section (3) and deinking agent (12)
The toner image T on the recycled paper (17) can be completely removed and can be newly reproduced as a recording medium, though it depends on the type of the recording medium. Especially, the advantage of using an expensive OHP sheet is great. Alternatively, at least the toner image T can be processed to be unreadable and can be kept secret as a substitute for the shredder.

[0059]

[Operation] The operation of the embodiment will be described below. Based on the start signal from the sensor (S1), the feed rollers (9a)-(9h) are driven for a predetermined time, and the OA waste paper (6)
Is temporarily stopped so as to be completely immersed in the treatment tank (11). At this time, the operation of the print deinking means (13) is separately controlled by a control means (not shown) so as not to be driven. The reason why the OA waste paper (6) is stopped in the processing tank (11) is to swell the toner image T in advance before scraping it by the print deinking means (13) to enhance the deinking effect. Of course, the deinking means (13) may be driven at the same time while being conveyed at a predetermined speed without stopping, or the treatment tank (1
The operation may be controlled so as to balance the deinking efficiency and the overall processing speed by slowing the conveying speed of the OA waste paper (6) only in 1) as compared with the other conveying portions. The swelling time, in which the OA waste paper (6) is completely immersed in the treatment tank (11) and temporarily stopped, should be determined from the balance between the deinking efficiency and the overall treatment speed, but it is from several seconds to several tens of minutes. Is practical.

After swelling, the deinking means (13) is started to drive,
At the same time, the respective feed rollers (9) are started to be driven, and the OA waste paper (6) is subjected to physical treatment for deinking. After the same process is completed, the OA waste paper (6) is conveyed to the flat part of the drying part (4).

The OA waste paper (6) conveyed to the flat part is once again stopped here to secure a sufficient drying time.

After drying, the respective feed rollers (9) are driven again to convey the OA waste paper (6) until the leading end is sandwiched between the calender rolls (15). When the sensor (S3) detects this state, the calendar roll (15) is driven, the surface defect is regenerated and the OA waste paper (6) is discharged to the cutter section (70).

The used OA waste paper is a sensor (S
The position is adjusted by 4) and (S5). For example, the operation of reproducing A4 paper to B5 paper will be described. The sensor (S4) is set to 182 mm from the edge of the cutter pedestal (62), and the sensor (S5) is set to 257 mm from the cutter pedestal (62). These sensors (S4) and (S5) may be set in advance by instructing the post-reproduction size with a switch (S2) provided in the vicinity of the waste paper input port, or the sensor (S1) may be used to set the front and rear edges of the waste paper Alternatively, the length may be detected, the length may be calculated from the time difference, and the length may be set by the signal.

The OA waste paper conveyed to the cutting section (70) is fed in the x direction by the paper feed rollers (63) to (65), and when the rear end of the paper is detected by the sensor (S4) (x direction). Stop the paper feed rollers (63) to (65). Next, the OA waste paper is cut by the blade (60) (x direction). At this time, the paper feed rollers (66) (y direction) and (67) are retracted upward.

Next, the paper feed rollers (63) to (65) are retracted upward, and instead, the paper feed rollers (66) to (6).
7) Lower (y direction), sensor (S5) (y direction)
When the trailing edge of the paper is detected by the paper feed roller (66)
~ Stop (67). Next, the blade (61) (y
Cut OA waste paper according to the direction.

The paper feed rollers (66)-(67) are retracted upward again, and instead the paper feed rollers (63)-(67) are replaced.
(65) is lowered, and the shaped OA waste paper is discharged by the discharge roller (23) through the discharge part (O) to the discharge tray (1
6) Discharge up. The cutting order in the x direction and the y direction is not particularly limited to the above order.

[0067]

As described above, the present invention provides a simple and personal reproducing apparatus that can reproduce recycled paper of the same quality as new copying paper without shredding used paper.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an example of a reproducing apparatus of the present invention.

FIG. 2 is a diagram showing one mode (web) of a print deinking unit.

FIG. 3 is a diagram showing an aspect (blade) of a print deinking unit.

FIG. 4 is a diagram showing an aspect (nozzle) of a print deinking unit.

FIG. 5 is a diagram showing a configuration example of a cutter unit.

[Explanation of symbols]

1: reproduction device, 2: paper feeding unit, 3: deinking unit, 4: drying unit,
5: Paper discharge section, 6: OA waste paper, 7: Paper feed tray, 8: Paper feed roller, 9: Feed roller, 10: Conveyor belt, 1
1: treatment tank, 12: deinking agent, 13: deinking means, 14: heater, 15: calendar roll, 16: paper discharge tray,
17: recycled paper, 18: filter, 19: pump, 2
0: Circulation path, 21: Inlet, 22: Outlet,
23: discharge roller, 25: waste paper collection box, 60: blade (x direction), 61: blade (y direction), 62:
Cutter base, 63 to 65: Paper feed roller (x direction), 66, 67: Paper feed roller (y direction), 70:
Cutter part, I: Opening part, S1, S3, S4, S5: Sensor, S2: Switch, O: Ejecting part, T: Toner image,
200: cloth belt (web), 210, 220: blade, 230: nozzle, 250: collection box

Claims (1)

[Claims] 1. A processing section for immersing a printed recording medium in a deinking agent, a printing processing means for deinking the printing by physically treating the printing surface of the recording medium in the processing section, and an arbitrary width. An OA used paper recycling apparatus, which is equipped with a cutter unit capable of cutting a recording medium.