JPH06208318A - Regenerating device - Google Patents

Abstract

PURPOSE:To regenerate copying paper without cutting the used paper of copying paper into small pieces by immersing a recording medium in a deinking agent and physically processing the printed surface of the recording medium so that printing may be deinked. CONSTITUTION:Feeding rollers 9a to 9h are driven for a specified time based on the signal of a sensor S1. In a state where the OA used paper 6 is immersed in a processing tank 11 filled with the deinking agent 12, it is temporarily stopped so that a toner image T is swollen to increase a deinking effect. Next, a deinking means 13 is started to be driven, and the respective rolles 9 are started to be driven so as to physically process the OA used paper 6 and perform deinking. After finishing the processing, the paper 6 is carried to the flat part of a drying part 4. The paper 6 carried to the flat part is temporarily stopped to secure sufficient drying time. After drying, the rollers 9 are driven again to carry the paper 6 to a calender roll 15, and the paper 6 is ejected to an ejection tray 16.

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 apparatus disclosed in Japanese Patent Laid-Open No. 4-89271 is one in which used paper is soaked in a deinking agent and then physically treated.

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 is not sufficiently obtained, so that the print is not sufficiently removed. When the treated waste paper is directly provided to another new printing process, the previous printing remains and the printed surface is contaminated.

[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, according to the present invention, 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 remove the printing. The present invention relates to a reproducing apparatus including a print processing unit for blackening.

The reproducing apparatus of the present invention comprises at least a processing section and a print processing means.

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 a conventionally known toner resin, for example, a resin composed of a toner resin currently used such as a styrene-acrylic copolymer resin or an ester resin.

In electrophotographic toners, 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 dissolves due to 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. Therefore, the melted dye is also diffused in the liquid to dye the paper. It can be suppressed to a level that can be ignored, reading of characters and patterns can be prevented, and recycled paper with sufficient whiteness to withstand reuse can be obtained.

Specifically, polyester resin (softening point, 1
30 ° C; glass transition point, 60 ° C, AV25, OHV38)
100 parts by weight, carbon black (made by Mitsubishi Kasei Co., MA
# 8) 5 parts by weight and 3 parts by weight of dye (Bontron E-89 manufactured by Orient Chemical Co., Ltd.) as a charge control agent, a kneading and pulverizing type toner having an average particle diameter of 13 μm, a styrene-n-butyl methacrylate resin (softening point, 132 C .; glass transition point, 60.degree. C.) 100 parts by weight, carbon black (Mitsubishi Kasei Co., MA # 8) 5 parts by weight, and a nigrosine dye as a charge control agent (Orient Chemical Co., Bontron N-01).
Effectively deinking the kneaded and pulverized toner consisting of 3 parts by weight. And 100 parts by weight of styrene-acrylic copolymer resin (softening point, 132 ° C .; glass transition point, 60 ° C.),
Carbon black (made by Cablack, REGAL 3
30 R) and 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.) as a charge control resin, for a copy image formed from a kneading and pulverizing type toner having an average particle size of 10 μm. Especially effective. This is probably because the toner does not have a soluble dye as a charge control agent. This is because, as mentioned above, the soluble dye does not penetrate deeply into the fibers of the paper. From the viewpoint of deinking the paper as it is without pulping it as in the present invention, it is thus possible to give the non-dissolvable resin itself charge controllability without using a soluble charge control agent. preferable.

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

The 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 as a deinking agent. It swells so that it can be easily detached from the copy paper in the subsequent print processing section. Further, it is sufficient that ink and particles such as a ballpoint pen, a highlighter pen, a magic ink, a red stamp and a pencil are also dissolved or swollen 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 such that the fixed toner on the waste paper dipped in the deinking agent swells by the action of the swelling agent and becomes plastic, and the surfactant added as necessary is adsorbed. Since it is easy to separate from the paper by the action, 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 out from the processing part and trapped or removed by a filter filled with glass wool, activated carbon or the like, so that they are re-adsorbed on paper and spots are spotted. It is preferable to prevent it from occurring.

Since the deinking agent that has been cleaned up can be returned to the processing section and used again, the deinking agent can be circulated and repeatedly used until its action is reduced. Deinking agent consumption is also minimized, making it much more efficient and economical compared to conventional recycled paper manufacturing processes that involve pulping.

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.

The thus-recycled recycled paper is preferably subjected to calendering such as passing it between metal rolls to which pressure is applied, thereby repairing the fine surface roughness of the paper during the deinking treatment, and bending it. It also removes, partially repairs fine holes such as staples, and polishes the paper surface. The recycled paper as described above provides a high-quality copy that is almost the same as the new paper.

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

[0036]

First Embodiment FIG. 1 shows a reproducing apparatus according to the first embodiment. In the figure, (6) is a so-called OH such as paper or polyester film on which a toner image T containing at least a resin component is recorded.
A recording medium such as a P sheet. These recording media are so-called O's, such as those of conventionally known copying machines, printers, and facsimiles.
Created by device A (refer to (6) below as “OA waste paper”)
Called).

The paper feeding 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) is 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. In addition, it is preferable to roughen the surface or make it into a mesh shape so that the conveying force of the OA waste paper 6 is improved. As the material, metal,
Although the polymer is not limited in any way, 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 almost 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 section (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 rotary brush form, but a cloth belt (web) (200) stretched between the 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), in order to enhance the scraping effect of the surface, a cloth woven of fibers, a metal belt having a roughened surface, or the like 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). It is preferable that the blade (220) is made of an elastic material such as metal or rubber, and is configured to scrape off the toner from the surface of the OA waste paper (6) by combining an unillustrated pressure contact means (spring or the like).

The deinking means (13) is a 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.

In the circulation path (20), the deinking agent (12) in the processing tank (11) is taken in from the inlet (21) and discharged from the outlet (22) by the 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 processing tank (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 to 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 utilizing 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.

The OA waste paper (6) passed through the calendar roll (15) is discharged as a recycled paper (17) from the discharge section (O) onto the discharge tray (16).

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 when using an expensive OHP, the merit is large. Alternatively, at least the toner image T
Can be processed unreadable and can be kept secret as an alternative to the shredder.

Operation The operation of the first embodiment will be described below. Sensor (S
Based on the start signal from 1), the feed roller (9
a)-(9h) is driven for a predetermined time, and the OA waste paper (6) is completely stopped in a state of being completely immersed in the processing 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, and the conveying speed of the OA waste paper (6) only in the processing tank (11) may be slower than that of other conveying portions. Then, the operation may be controlled so as to balance the deinking efficiency with the overall processing speed. OA waste paper (6)
The swelling time, in which the water is completely immersed in the processing tank (11) and is temporarily stopped, should be determined from the balance between the deinking efficiency and the overall processing speed, but from several seconds to 1
0 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 portion 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 onto the discharge tray (16).

[0059]

Second Embodiment FIG. 5 shows a deinking device according to a second embodiment. In the present embodiment, the deinking device of the first embodiment is improved so as to be compatible with both copy paper having toner printed on both sides and copy paper having one side printed. The device of this embodiment is
Two deinking portions (3a, 3b), a guide plate (26) for reversing OA waste paper, a branch switch S6, and a case of single-sided printing for drying and discharging the sheet by only one-sided processing,
It has a unit (300) provided with a conveyor belt (10c) and a drying section (4b), and is provided with a sensor S4 for detecting whether or not double-sided printing is performed.

Operation The operation of the second embodiment will be described below. Sensor (S
4) is installed so as to sandwich both sides of the OA waste paper (6), and whether the toner T is printed on both sides of the waste paper (6) when the OA waste paper (6) passes between them. Determine if it is printed on only one side. Of course, when it is known in advance that the OA waste paper is printed on only one side or both sides, the operator can input the switch (S8) to designate one-sided or two-sided processing.

When it is determined that the toner T is printed on both sides of the waste paper (6), the branch switch S6 is tilted leftward in the drawing around the fulcrum (25). The OA waste paper is sent to the deinking section (3a), and one side is deinked first as in the first embodiment. Then, it is conveyed downward along the guide plate (26) by the conveyor belt (10a) and is sent to the deinking section (3b). Even if the drive timing of the deinking unit (3b) is determined by the sensor S5 in the figure, the predetermined deinking unit (3b)
The time from the driving of a) may be managed by a timer for driving. Toner T on the opposite side by the deinking section (3b)
Is deinked, and the drying section (4a) and calendar roll (15
After passing through a), it is discharged from the discharge section (O) as recycled paper (17a) onto the discharge tray (16a).

If it is determined by the sensor S4 that the toner T is printed on only one side of the waste paper (6),
The branch switch S6 is tilted to the right. The OA waste paper (6) deinked by the deinking unit (3a) is guided to the unit (300) by the switch S6. Sensor S7 detects the paper,
Drive the unit (300). Unit (300)
Is driven, the deinking mechanism (3b) does not move. The waste paper (6) passes through the drying section (4b) and the calender roll (15b), and then the recycled paper (17) is discharged from the discharge section (O).
It is discharged onto the discharge tray (16b) as b). According to the apparatus of this embodiment, it is possible to recycle used paper copied on one side and both sides. Of course, the unit (300) and the branch switch S6 may be omitted from the apparatus of the present invention, and an apparatus in which deinking processing is forcibly applied to both sides of any paper may be used.

[0063]

[Embodiment 3] In this embodiment, the OA waste paper is immersed in the deinking agent, instead of the immersion tank (11) in the previous embodiment, a nozzle (5) is used.
01, 503) to discharge the deinking agent. This apparatus also has two deinking units (3a, 3b) and can handle both double-sided and single-sided copying.

Operation The operation of the third embodiment will be described below. Deinking section (3a, 3
The OA waste paper (6) sent to b) is once stopped at that location or is transported slowly enough. The deinking agent is ejected from the nozzles (501, 503) onto the OA waste paper (6) to swell the toner T sufficiently. At this time,
The flow rate of the deinking agent is set in advance so as to discharge the OA waste paper (6) in such a state that the surface of the OA waste paper is completely washed away, that is, the OA waste paper is sufficiently immersed in the deinking agent. It is adjusted by control valves (502, 504).

Next, the ink is deinked by the same printing deinking means as in Example 1, and the toner is discharged into the deinking agent flowing and removed. The deinking agent containing the detoned toner T overflows and flows down from both sides of the belt and is collected in the liquid storage tank (30) having a sufficiently large opening at the bottom of the belt, so that the floating toner is re-adhered to the waste paper. There is nothing to do. The deinking agent collected in the liquid storage tank (30) is a filter (18).
Through the outlet (22) by the action of the pump (19)
It is again sprayed from the nozzle via. As in the case of the second embodiment, the sensor S4 detects whether the OA waste paper is a double-sided copy. If both sides are printed, the deinking portions (3a, 3b) are deinked, but if only one side is printed, the control valve (504) is closed (5
The discharge of the deinking agent from 03) is stopped.
Then, the used paper is dried (4) and calender rolls (1
After 5), it is discharged from the discharge section (O).

[0066]

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 a reproducing apparatus according to a first embodiment 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 schematic configuration of a reproducing apparatus according to a second embodiment of the present invention.

FIG. 6 is a diagram showing a schematic configuration of a reproducing apparatus of Example 3 of the present invention.

[Explanation of symbols]

1: reproduction device, 2: paper feeding unit, 3: deinking unit, 4: drying unit,
5: paper discharge unit, 6: OA waste paper, 7: paper feed tray, 8: paper feed roller, 9 ,: feed roller, 10: transport belt, 1
1: treatment tank, 12, 31, 33: deinking agent, 13: deinking means, 14: heater, 15: calendar roll, 16:
Output tray, 17: recycled paper, 18: filter, 19:
Pump, 20: circulation path, 21: inlet, 22: outlet, 23, 24: feed roller, 25: fulcrum, 2
6, 27: guide plate, 30: liquid storage tank, I: opening, S
1, S3, S4, S7, S8: Sensor, S2, S6:
Switch, O: Ejection part, T: Toner image, 200: Fabric belt (web), 210, 220: Blade, 230:
Nozzle, 250: Recovery box, 300: Unit, 5
01, 503: nozzle, 502, 504: control valve

Claims (1)

[Claims] 1. A processing unit for immersing a printed recording medium in a deinking agent, and a printing processing unit for deinking the printing by physically treating the printing surface of the recording medium in the processing unit. A playback device characterized by the above.