JP3497344B2 - Reproduction device for recording material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus for reproducing an image-recorded material by removing an image-formed material formed on the image-recorded material by an image forming apparatus such as a copying machine, a printer, a facsimile, and a printing machine. The present invention relates to the improvement of the removal efficiency of image-formed products.

[0002]

2. Description of the Related Art In recent years, the need for wetting copy paper and printer paper has increased due to the rapid development of office automation. Since such paper is usually produced from pulp as a raw material, there is a possibility that the supply amount will rapidly increase in response to a rapid increase in demand, and excessive deforestation will cause global environmental degradation. Therefore, in recent years, from the viewpoint of protection of global resources and the global environment, there has been a growing movement to process unnecessary paper and reuse it as recycled paper.
Various techniques for recycling used paper that can be used in offices have been proposed.

A method of using an organic solvent is used to recycle such used paper. For example, as shown in JP-A-1-101576 and JP-A-3-91096, ultrasonic wave vibration is applied to paper soaked in a soluble solvent of toner resin to remove the toner. Or
As disclosed in JP-A-4-300395 and JP-A-4-118500, an organic solvent is adhered to dissolve a toner, and the dissolved toner is washed, air-sucked, adsorbent-contacted,
It is removed by methods such as mechanical peeling and electrostatic adsorption.

Further, as a method of forming an image using a special paper and removing the formed image from the paper, Japanese Patent Laid-Open Nos. 4-64472, 4-64473 and 2
As shown in Japanese Patent Publication No. 55161, a release agent is coated on the surface.
Toner that is fixed on the sheet
A method has been proposed in which the toner is removed from the toner by remelting the toner, attaching a peeling member, and then cooling.

As a method of using a special toner, as shown in Japanese Patent Laid-Open No. 4-82983, the recording paper on which an image is formed is heated to melt the toner, and the melted toner is used. A method of transferring to the peeling member side and removing the toner,
As shown in JP-A-4-281096, JP-A-4-333699, and JP-A-4-356185, a toner erasable by light is used and a toner is used by utilizing a laser light or the like. There has been proposed a method of removing the toner, and a method of removing the toner by remelting the toner and then rapidly cooling and solidifying the toner as disclosed in Japanese Patent Laid-Open No. 4-333088. However, the method using an organic solvent has a disadvantage that it has a bad influence on the human body and the environment. Also, the method of using special paper or special toner cannot be applied when using plain paper or normal toner, and the quality of the paper is significantly impaired due to peeling of the toner. There is.

On the other hand, at least one kind of water or aqueous solution selected from the group consisting of an aqueous solution containing water and a surfactant, an aqueous solution containing an aqueous solution polymer, and an aqueous solution containing a surfactant and an aqueous polymer. A treatment liquid for accelerating image removal is prepared, and the treatment liquid is supplied to a recording material (hereinafter referred to as a paper) which is composed of a paper-like layer containing cellulose fiber as a main component, Destabilizes the adhesion state of the hydrophobic image by the thermoplastic ink (toner) stably adhering to the surface of the, and heat-bonds or heat-pressure bonds the hydrophobic image to the peeling member having adhesiveness. A paper recycling method in which the paper is peeled from the paper by pressure bonding is disclosed in, for example, JP-A-7-13383. According to this method, special paper or toner
It is possible to realize highly safe sheet recycling without requiring the use of the sheet, without significantly damaging the sheet, and without adversely affecting the human body or the environment.

However, in the reproducing method disclosed in Japanese Patent Application Laid-Open No. 7-13383, since the removal performance of the hydrophobic image is improved, the processing liquid is 0.4 to 4 g for processing A4 size paper, for example. A large amount of liquid must be supplied. If a large amount of the processing liquid is supplied in this way, the regenerated paper will spread, and wrinkles, waviness, and curls will occur. On the other hand, Japanese Patent Application Laid-Open No. 7-281566 discloses that a treatment liquid containing a low concentration of a surfactant and a treatment liquid containing a high concentration of a surfactant are supplied to a sheet as a treatment liquid. . In this way, when two kinds of treatment liquids are supplied to the paper, the removal performance of the hydrophobic image can be improved without using a large amount of treatment liquid, and the stretching, wrinkling, waviness, curl, etc. No paper can be recycled.

The principle of removing a hydrophobic image disclosed in Japanese Patent Application Laid-Open No. 7-13383 will be described in more detail. When observing a recording paper formed of a paper-like layer containing cellulose fibers as a main component, the surface of the recording paper is uneven due to the entanglement of the cellulose fibers. In addition, countless minute spaces are formed inside the paper. On the other hand, in the image forming substance that forms a hydrophobic image, countless particles thereof are attached to the uneven surface of the paper. Usually, the particle size of the particles of the image-forming substance is larger than the concave portion on the surface of the paper or the minute space inside the paper. Therefore, the image forming substance attached to the surface of the paper is in a state where it does not enter the concave portion of the paper surface or the minute space inside the paper.

When the treatment liquid is supplied to the paper to which the image forming substance is attached, the treatment liquid permeates the inside of the paper and the contact interface between the image forming substance and the paper due to the capillary phenomenon,
Due to the swelling phenomenon, the cellulose fibers of the paper are deformed. As a result, the contact area of the image forming substance with respect to the paper is reduced, and the adhesion of the image forming substance with respect to the paper is weakened. When the image forming substance in such a state is brought into contact with the peeling member having adhesiveness and heated or pressed, the image forming substance is transferred to the peeling member and removed from the paper.

[0010]

However, the particle size of the particles of the image forming substance varies. The particles of the image-forming substance having an extremely fine particle size enter the concave portion of the paper surface or the minute space inside the paper. in this case,
Even if the image forming substance is heated or pressed by supplying the processing liquid to the paper, the concave portion of the paper surface or the image forming substance that has entered the minute space inside the paper does not come into contact with the peeling member. However, there is a problem that the image forming substance remains on the paper. In particular, such a problem is likely to occur in a large paper having a concave portion on the surface or a small internal space such as used paper or recycled paper, and is also likely to occur in a solid black image.

The present invention has been made in order to solve such a problem, and it is possible to efficiently recycle used paper or recycled paper and to reliably erase even a solid black image formed on a recording material. An object of the present invention is to obtain a reproducing apparatus for a recording material that can be used.

[0012]

A recording material reproducing apparatus according to the present invention has an image removal promoting substance application portion, a peeling portion, and a finishing portion which are provided along a guide path of the recording material. The removal-promoting substance application section is provided on the entrance side of the recording material on which the image-forming substance is formed, and makes the adhesion state of the image-forming substance stably adhering to the surface of the recording material unstable. An image removal promoting substance is applied, and the peeling portion has a pair of peeling sheets, a preheat portion, and a heating and pressure peeling portion. The peeling portion is provided downstream of the image removal promoting substance applying portion and has a pair of peeling sheets. The sheet consists of an endless sheet wound up and down, and sandwiches and conveys both sides of the recording material provided with the image removal promoting substance,
The preheat part is an image of the peeling sheet that sandwiches the recording material.
While heating to the fluidizing temperature of the forming material, pressure is applied to bring the release sheet into close contact with both sides of the recording material, and the heat and pressure release section has a plurality of heating rollers arranged in a zigzag pattern. −
While heating the recording material and the release sheet that is in close contact with the recording material to the softening temperature of the image-forming substance, the recording material is provided on the downstream side.
A bending moment is applied to these to peel off the image forming substance adhering to the surface of the recording material and attach it to the peeling sheet, and the finish is provided downstream of the peeling portion to peel off the image forming substance. The image removal promoting substance is removed from the recorded material.

The preheat portion has at least two preheat rollers for guiding the peeling sheet sandwiching the recording material.
Good to have la.

It is preferable that the preheat roller has a plurality of irregularities on its surface, or has a plurality of irregular grooves along its circumference on its surface. It is desirable that the plurality of grooves of the preheat roller are formed so as not to be parallel to the conveying direction of the peeling sheet.

The preheat portion has at least two preheat guides for guiding the peeling sheet sandwiching the recording material.
A plurality of rotatable pressure rollers that guide the rollers and the release sheet that is pressed against the outer peripheral surface of each preheat roller and sandwiches the recording material to the preheat rollers. It is desirable to have and.

A pressure roller is provided on the outer peripheral surface of the preheat roller.
It is advisable to provide arc-shaped concavities and convexities that mesh with the blades, and arrange each preheater so that the arc-shaped concavities and convexities mesh with each other.

Further, the preheat portion may be composed of two heat generating plates whose opposing surfaces are formed in a wavy shape. Further, it is desirable to provide a plurality of rotatable pressure rollers on the opposing surfaces of the two heat generating plates.

Further, the preheat portion and the heating / pressure peeling portion of the peeling portion may be covered with a blocking member containing a heater.
desirable.

[0019]

Further, it is preferable that the heat generation temperature of the preheat portion of the peeling portion is set in the range of 115 to 160 ° C. and the heat generation temperature of the heating and pressure peeling portion is set in the range of 70 to 100 ° C.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A sheet recycling apparatus of the present invention comprises a sheet feeding unit for accommodating a sheet having an image forming substance formed on its surface, an image removal accelerating liquid applying section (hereinafter referred to as a liquid supplying unit), and a peeling unit. And a finishing unit and a paper discharge unit. The liquid supply unit is arranged on the downstream side of the paper feeding unit, the peeling unit is arranged on the downstream side of the liquid supply unit,
The finishing unit is arranged on the downstream side of the peeling unit, and the paper discharge unit is arranged on the downstream side of the finishing unit.

The liquid supply unit applies a treatment liquid for promoting image removal (hereinafter referred to as a treatment liquid) containing a surfactant that makes the adhered state of the image forming substance stably adhering to the surface of the paper unstable. .

The peeling unit comprises a pair of peeling sheets, a preheat portion provided on the paper entry side, a heating / pressurizing peeling portion provided downstream of the preheat portion, and heating / pressurizing peeling. It has a separation block and an atmosphere heating heater provided downstream of the section. The peeling sheet is composed of an endless sheet body, and one peeling sheet passes through a preheat portion, a heating / pressurizing peeling portion, and a separation block, and is provided with a plurality of tension rollers.
The other peeling sheet passes through the preheat portion, the heating and pressurizing peeling portion, and the separation block, and is stretched around a plurality of tensioning rollers provided in the lower portion. Each peeling sheet has a property of adhering the image forming substance attached to the paper. The preheat portion has, for example, two rotatable preheat rollers, and conveys the release sheet in close contact with both sides of the paper fed from the liquid supply unit. The heating / pressurizing peeling unit has, for example, six rotatable heating rollers, and the peeling sheet sandwiching the sheet is conveyed while being bent while being bent while being heated and pressed. The separation block separates the peeling sheet from the paper. The atmospheric heating heater keeps the atmospheric temperature of the preheat portion and the heating / pressure peeling portion constant.

The finishing unit conveys the paper from which the image-forming substance has been removed while applying pressure and heat to absorb water and finish it.

When the paper stored in the paper feeding unit is to be recycled, the paper fed from the paper feeding unit is provided with a certain amount of a processing liquid that makes the adhesion state of the image forming substance unstable in the liquid feeding unit. To do. The treatment liquid applied to the paper penetrates into the paper due to the capillary phenomenon and causes the paper to swell. Due to this swelling phenomenon, the cellulose fibers of the paper are deformed, the contact area of the image forming substance with respect to the paper is reduced, and the adhesion of the image forming substance with respect to the paper is weakened.

The sheet applied with the treatment liquid and sent to the peeling unit is sandwiched between the pair of peeling sheets by the preheat roller of the preheat section. When the peeling sheet, which sandwiches the paper and is in close contact, passes through the preheat roller, it is preheated to weaken the adhesion of the image forming substance adhered to the paper by the treatment liquid and heat. The paper that has passed through the preheat roller is sent to the heating / pressurizing peeling portion in a state of being in close contact with the peeling sheet, and is heated and applied while being subjected to bending stress by the six heating rollers arranged in zigzag. When pressed, the contact surface between the peeling sheet and the paper is stretched and contracted, and the image-forming substance is peeled from the paper and adhered to the peeling sheet.

The exothermic temperature of the preheat roller for heating the sheet closely adhered to the peeling sheet is set in the range of 115 to 160 ° C. which is the fluidizing temperature of the image forming substance, and the exothermic temperature of the heating roller is set. Is in the range of 70 to 100 ° C., which is the softening temperature of the image forming material. That is, the paper on which the treatment liquid is attached is preheated.
By being heated to 115 to 160 ° C by the roller, the attached image forming substance becomes fluid due to the action of the processing liquid and heat, and enters the concave part of the paper surface and the minute space inside the paper. It comes into contact with the image forming substance and becomes in an adhesive state.
When this paper is sent to a heating roller that is generating heat at 70 to 100 ° C., the temperature of the image forming substance that has been in a fluidized state is rapidly lowered and becomes a softened state, and the cohesive force of the image forming substance is strengthened. Therefore, the image forming substance that has entered the concave portion of the paper surface and the minute space inside the paper can also be transferred to the peeling sheet together with the image forming substance on the paper surface, and can be completely removed from the paper. The imaging substance can be removed. The atmosphere around the preheater roller and the heating roller is warmed to a constant temperature by an atmosphere heating heater, and the heat insulating member having heat insulating property is used to keep the atmosphere around the preheater roller and the heating roller. By keeping the cover atmosphere temperature constant, the temperatures of the preheat roller and the heating roller can be accurately controlled.

The paper passing through the heating roller and the peeling sheet are separated by a separating block, and the paper from which the image-forming substance has been removed extends while moisture is removed by the finishing unit, and wrinkles, waviness, curls, etc. It is removed and discharged as recycled paper to the paper discharge unit.

By intermittently heating and pressing the peeling sheet by providing a plurality of irregularities on the surface of the preheat roller or by providing a plurality of grooves which are not parallel to the conveying direction of the peeling sheet. The image forming substance existing in the concave portion of the paper can be easily removed.

Further, the preheat portion is pressed against the outer peripheral surface of each preheat roller and at least two preheat rollers for guiding the peeling sheet holding the paper, and the paper is sandwiched. By forming the peeling sheet with a plurality of rotatable pressure rollers that guide the peeling sheet closely to the preheat roller, the peeling sheet sandwiching the paper can be placed along the preheat roller. , The peeling sheet is pressed against the preheat roller while the plurality of pressure rollers rotate.
The peeling sheet can be conveyed smoothly. Further, since the pressure applied to the peeling sheet is intermittently repeated by a plurality of pressure rollers, the image forming substance existing in the concave shape of the sheet can be surely peeled and the peeling sheet can be surely peeled. The adhesion of the image-forming substance to the sheet can also be increased.

Further, when the preheat roller is provided with arcuate irregularities which mesh with the pressure roller and the preheat rollers are arranged so that the arcuate irregularities mesh with each other, the preheat roller is preformed. Between the pre-roller and the pressure roller to accelerate fluidization of the image-forming substance by intermittently heating and pressurizing the peeling sheet both when passing between the pre-roller and the pressure roller. be able to.

Further, the preheat portion may be composed of two heat generating plates whose opposite surfaces are corrugated, or a plurality of pressure rollers rotatable on the opposite surfaces of the two heat generating plates. By providing the la, the peeling sheet can be intermittently heated and pressed, and the fluidization of the image forming substance can be promoted.

When removing the image-forming substance adhering to both sides of the paper, the peeling sheet conveyed by a plurality of heating rollers is heated from the set temperature of the preheat section to the heating roller. By forcibly cooling to the set temperature, the temperature of the fluidized image forming substance can be rapidly lowered to the softening temperature, and the adhesiveness with the image forming substance can be further improved.

[0034]

1 is a sectional view showing the construction of an embodiment of the present invention. As shown in the figure, the paper recycling apparatus 1 includes a paper feed unit 4 which is attached to a main body case 2 and stores a paper 3 on the surface of which an image forming substance is formed, and a main body case 2.
An image removal accelerating liquid applying section (hereinafter referred to as a liquid supply unit) 5, a peeling unit 6, a finishing unit 7, and a paper discharge unit 8 attached to the main body case 2 are provided inside. The liquid supply unit 5 is arranged on the downstream side of the guide path 9a for guiding the paper 3 from the paper supply unit 4. The peeling unit 6 is arranged downstream of the liquid supply unit 5 via the guide path 9b. The finishing unit 7 is arranged on the downstream side of the peeling unit 6 via the guide path 9c, and the paper discharge unit 8 is arranged on the downstream side of the finishing unit 7.

The paper 3 stored in the paper feed unit 4 is sent to the liquid supply unit 5 by the transport rollers 41 and 42 through the guide path 9a. The liquid supply unit 5 applies an image removal promoting treatment liquid (hereinafter referred to as a treatment liquid) 51 containing a surfactant that makes the adhesion state of the image forming substance stably adhering to the surface of the paper 3 unstable. And a processing liquid container 52 that stores the processing liquid 51 and a transport roller that transports the paper 3.
La, a coating roller 54 arranged to face the transport roller 53, and a part of the processing liquid 51 in the processing liquid container 52 is immersed in the processing liquid 51 and rotated to process the coating roller 54. Liquid 51
And a pumping roller 55 for supplying. Treatment liquid container 52
The processing liquid 51 stored in the processing liquid container 5 is supplied by pumping up the processing liquid in the liquid retaining container 56 with the pump 57.
The amount of the treatment liquid 51 in the sheet 2 is kept constant and is applied to the sheet 3 by a constant amount.

The peeling unit 6 provided on the downstream side of the liquid supply unit 5 includes a pair of peeling sheets 61 and 62 and a sheet 3 of paper.
A preheat portion 63 provided on the inlet side of the heat exchanger, a heating / pressure peeling portion 64 provided downstream of the preheat portion 63, a separation block 65 provided downstream of the heating / pressure peeling portion 64, and an atmosphere. It has a heating heater 66. Peeling sheet 61,6
Reference numeral 2 is an endless sheet member, and the peeling sheet 61 is stretched through a preheat portion 63, a heating / pressurizing peeling portion 64, and a separation block 65, and is attached to a plurality of tension rollers 67 provided on the upper portion. The peeling sheet 62 is passed around the preheat portion 63, the heating / pressurizing peeling portion 64, and the separation block 65, and is stretched around a plurality of tension rollers 68 provided in the lower portion. The peeling sheets 61 and 62 have a property of adhering the image forming substance attached to the sheet 3. With such a property, the peeling sheets 61 and 62 themselves may have the property of adhering the image forming substance, or the peeling sheets 61 and 62 and the member for adhering the image forming substance may be integrally formed. May be.

The preheat portion 63 has a plurality of, for example, two rotatable preheat rollers 631.
The peeling sheets 61 and 62 are brought into close contact with both sides of the sheet 3 sent from the sheet and conveyed. A plurality of heating / pressurizing peeling parts 64, for example, 6
It has a rotatable heating roller 641, and the peeling sheets 61 and 62 sandwiching the paper 3 are bent while being heated and pressed, and are conveyed while giving bending stress. 6 heating rolls
La 641 has a wrapping angle of 180 for the peeling sheets 61 and 62.
They are arranged in a zigzag pattern so that they are smaller than the degree.
The separation block 65 separates the peeling sheets 61 and 62 from the paper 3. The atmosphere heating heater 66 is composed of a pair of plate-shaped heaters, and is provided above and below the preheat portion 63 and the heating / pressure peeling portion 64. A cleaner 69 for removing dirt from the peeling sheets 61 and 62 is provided on the moving path of the peeling sheets 61 and 62. The cleaner 69 is a peeling sheet 61, 6
2 has a spiral roll 691 for scraping off the image-forming substance attached thereto by contact with 2, and a cleaning container 692 for containing the removed image-forming substance.

The finishing unit 7 provided on the downstream side of the peeling unit 6 via the guide path 9c is a drum heater having a built-in heater 71 for heating the paper 3 after removing the image forming substance while applying a pressing force. -Ta 72 and drum heater 72
And a transport roller 73 arranged around the drum heater 72.
And a conveyance water absorption belt 74 that is wound around and absorbs water while conveying the sheet 3.

The image-forming substance which is stably attached to the surface of the paper 3 accommodated in the paper feeding unit 4 of the paper recycling apparatus 1 having the above-mentioned structure can be processed by the usual electrophotographic method, thermal transfer method or hot method. It is an image-forming substance that forms a hydrophobic image having thermal flexibility or thermal softness recorded on the sheet 3 by a method such as an inkjet printing method using a melt ink, a printing method or the like. Specifically, it is a dry toner or a wet toner for developing an electrostatic latent image, an ink impregnated in a hot melt ink sheet, a hot melt ink, or the like.

Here, the structure of the toner which is most used in the copying machine will be described as an example. The toner is composed of a resin component, a colorant, a polarity control agent and the like. The resin component is, for example, a styrene resin, an acrylic resin, a methacrylic resin, a styrene-acrylic copolymer resin,
Styrene-butyl acrylic copolymer resin, styrene-
Methacrylic copolymer resin, styrene-budadiene copolymer resin, polyester resin, epoxy resin thermoplastic resin or thermosetting resin, or two of these resins
It consists of more than one kind of mixture. These resins have a glass transition temperature of 55 to 70 ° C, a softening point of 70 to 100 ° C, and a fluidization temperature of 115.
It is ˜160 ° C. and generally shows a hydrophobic property which is insoluble in water.

Various pigments are used as the colorant. For example, carbon black, copper oxide, manganese dioxide, aniline black, activated carbon, ferrite, magnetite and the like are used as the black colorant. Examples of yellow colorants include cadmium yellow, yellow lead, zinc yellow, mineral fast yellow, nebul yellow and banza yellow.
G, Banza-Yellow-10G, Quinoline Yellow-Lay
Ki, yellow iron oxide, nickel titanium yellow, naphtho-luyer S, benzidine yellow-G, benzidine yellow-GR, permanent yellow NCG, tartrazine lake and the like are used. As a red colorant, red yellow lead,
Molybdenum Orange, Permanent Orange GTR, Pyrazolo Orange, Vulcan Orange, Indanthrene Brilliant Orange RK, Benzidine Orange G, Indanthrene Brilliant Orange GK, Bengala, Cadmium Red, Red Lead, Permanent Red 4R, Litho −
Red, Pyrazolo Red, Watching Red, Ray
Killed C, Ray Killed D, Brilliant Carmin 6
B, Eosin lake, Rhodamin lake B, Alizarin lake, Brilliant carmine 3B, Permanent orange GTR, Balkan fast orange GC, Permanent red F4RH, Permanent carmine FB, etc. are used. . As a blue colorant, dark blue, cobalt bull-,
Alkali blue lake, Victoria blue lake, phthalocyanine blue and the like are used.

The polarity control agent includes a positive charge control agent and a negative charge control agent. Examples of the positive charge control agent include nigrosine base EX, quaternary ammonium salt, polyamine compound, imidazole compound and the like. Examples of the negative charge controlling agent include chromium complex salt type azo dyes, copper phthalocyanine type dyes, chromium complex salts, zinc complex salts, aluminum complex salts and calixarene compounds.

Further, the processing liquid 5 used in the liquid supply unit 4
1 is an aqueous solution containing a surfactant. The surfactant has a function of allowing the liquid to quickly penetrate into the paper 3, and its molecule is generally composed of a combination of a lipophilic group and a hydrophilic group. The type of the surfactant of the treatment liquid 51 used in the paper recycling apparatus 1 is not particularly limited, and examples thereof include a fatty acid derivative sulfate ester and a sulfonate / phosphate ester type anionic surfactant. , Quaternary ammonium salts, cation (cationic) surfactants such as heterocyclic amines and amine derivatives, amphoteric surfactants, nonionic surfactants and the like.

Listed below are more specific examples of substances that can be used as the surfactant. Examples of nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers,
Polyoxyethylene alkyl esters, polyoxyethylene alkyl sorbitan esters, polyoxyethylene alkyl amines, glycerin fatty acid esters,
Decaglycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol-
Examples include fatty acid esters, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene polyoxypyropyrene block polymers, perfluoroalkyl phosphoric acid esters, and polyoxyethylene-modified polydimethylsiloxanes. As the anionic surfactant, higher fatty acid salt, N-acyl amino acid salt,
Polyoxyethylene alkyl ether carboxylate, acylated peptide, alkyl sulfonate, alkyl benzene sulfonate, alkyl naphthalene sulfonate,
Mono or dialkyl sulfosuccinate, α-olefin sulfonate, N-acyl sulfonate, alkyl sulfate, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl aryl ether sulfate, alkyl amide Sulfates, monoalkyl phosphates, dialkyl phosphates, trialkyl phosphates, monopolyoxyethylene alkyl ether phosphates, bispolyoxyethylene alkyl ether phosphates, tris polyoxyethylene alkyl ether phosphates, poly Oxyethylene alkyl aryl ether phosphate, perfluoroalkyl carboxylate,
Perfluoroalkyl sulfonate, perfluoroalkenyl aryl sulfonate, N-perfluorooctane sulfonylglutamate, perfluoroalkyl-
N-ethylsulfonylglycine salt, 3- (ω-fluoroalkanoyl-N-ethylamino) -1-propanesulfonate, perfluoroalkylethyl phosphate ester salt, carboxylic acid-modified polydimethylsiloxane, sulfonic acid-modified polydimethylsiloxane Etc. Examples of the cationic surfactant include higher alkyl amine salts, higher alkyl quaternary ammonium salts, alkylbenzene amine salts, alkylbenzene quaternary ammonium salts, and alkyl heterocyclic quaternary ammonium salts. Examples of the amphoteric surfactant include betaine and aminocarboxylic acid.

As materials for imparting adhesiveness of the image forming substance to the peeling sheets 61 and 62 of the peeling unit 5 for transferring the image forming substance adhered to the paper 3, synthetic rubber, natural rubber, epoxy resin, Amino resins, phenolic thermosetting resins, vinyl polymers, acrylic resins, thermoplastic or thermosetting synthetic resins, metals, metal oxides, ceramic materials and the like are used. Examples of the synthetic rubber that can be used include isoprene rubber, neoprene rubber, chloroprene rubber, silicone rubber, butadiene rubber, and fluororubber. Examples of usable epoxy resins include bisphenol-epichlorohydrin condensates.
Examples of amino resins that can be used include alkyd resins, urea formaldehyde resins, butyl urea formaldehyde resins, butylated melamine formaldehyde resins, and benzoquanamine formaldehyde resins.Examples of usable phenolic thermosetting resins include terpene. Pheno
Examples thereof include a phenol resin, a phenol ether resin, and a phenol resin.

Examples of usable vinyl polymers include polyvinyl chloride, polyvinylitene chloride, vinylitene chloride-acrylonitrile copolymer, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, ethylene-tetrafluoroethylene. Examples thereof include copolymers and polyvinylidene fluoride. Examples of usable vinyl polymers include polyvinyl butyral, polyvinyl formal, polypropylene and polyethylene. Examples of usable acrylic resins include polybutyl acrylate, polymethacrylic acid, and polymethylmethacrylate.

Examples of usable thermoplastic or thermosetting synthetic resins include polyimide, polyamide, polycarbonate, polyether sulfone, polyether ether ketone, polyethylene terephthalate and polyethylene naphthalate. Polyester such as aromatic polyester, polyphenylene sulfide, polyparavalanic acid,
Examples include polyether nitrile and aramid. Examples of usable metals include nickel, stainless steel, aluminum and the like.

Polyethylene terephthalate is a preferable material from the viewpoint of image removal characteristics and durability.
, Polyethylene naphthalate, polyether ether ketone, polyphenylene sulfide, polyparavalanic acid, polyether nitrile, aramid, polyimide, polyether ether, stainless steel, nickel, aluminum and the like.

Although these materials may be used alone, they may be laminated, alloyed, or compounded by adding other additives such as glass fiber, whiskers, carbon, silica and titanium oxide. It can also be used.

Next, the sheet recycling apparatus 1 configured as described above.
The operation of removing the image forming substance adhering to the paper 3 and reproducing the same will be described below.

The sheet 3 having the image forming substance attached thereto and stored in the sheet feeding unit 4 is sent to the liquid supplying unit 5 through the guide route 9a by the transport rollers 41 and 42. While the sheet 3 sent to the liquid supply unit 5 is being conveyed by the conveying roller 53, the coating roller 54 causes the processing liquid 51 to destabilize the adhered state of the image forming substance on the surface by a constant amount. Granted. When the treatment liquid 51 is applied to the paper 3, the treatment liquid 51 penetrates into the paper 3 by the capillary phenomenon and causes the paper 3 to swell. Due to this swelling phenomenon, the cellulose fibers of the sheet 3 are deformed, the contact area of the image forming substance with respect to the sheet 3 is reduced, and the adhesion of the image forming substance to the sheet 3 is weakened. At this time, the surfactant accelerates the permeation of the treatment liquid 51 into the paper 3.

The sheet 3 coated with the treatment liquid 51 is sent to the peeling unit 6 through the guide path 9b. Peeling unit 6
The sheet 3 sent to the sheet is sandwiched between the peeling sheets 61 and 62 by the preheat roller 631 of the preheat portion 63 on the entry side. When the peeling sheets 61 and 62 which sandwich the paper 3 and are in close contact with each other pass through the preheat roller 631, they are preheated, and the adhesive force of the image forming substance adhered to the paper 3 by the treatment liquid 51 and heat. Weaken. Preheat roller 6
The sheet 3 having passed through 31 is sent to the heating / pressurizing peeling section 64 while being in close contact with the peeling sheets 61 and 62. Peeling sheet 6
When the paper 3 closely attached to the sheets 1 and 62 is sent to the heating / pressurizing peeling section 64, it is heated and pressed while being subjected to bending stress by the six heating rollers 641 arranged in zigzag, and the peeling sheet is peeled off.
The contact surfaces of the sheets 61 and 62 and the sheet 3 are stretched and contracted, and the image forming substance is peeled off from the sheet 3 to separate sheets 61 and 62.
Glue to.

A preheat roller 631 and a heating roller for heating the sheet 3 thus closely attached to the peeling sheets 61 and 62.
The temperature of the rotor 641 is controlled to be a constant temperature by a temperature control means of a control unit (not shown) having a micro computer configuration. For example, the heat generation temperature of the pre-heat roller 631 is set to 136 ° C., the heat generation temperature of the heating roller 641 is set to 100 ° C., and the heat generation temperature of the heating roller 641 is set with respect to the heat generation temperature of the pre-heat roller 631. Is low. By increasing the heat generation temperature of the preheat roller 631 in this way, the adhesive force of the image forming substance adhering to the paper 3 can be reliably reduced. Further, by making the heat generation temperature of the heating roller 641 lower than the heat generation temperature of the preheat roller 631, the adhesive force of the peeling sheets 61, 62 can be increased. The heat generation temperature of the preheat roller 631 and the heat generation temperature of the heating roller 641 can be arbitrarily changed and set by the control unit. However, alteration of the paper 3 or peeling of the image forming substance,
The heat generation temperature of the preheat roller 631 is in the range of 115 to 160 ° C., which is the fluidization temperature of the image forming material, and the heat generation temperature of the heating roller 641 is 70 to 100, which is the softening temperature of the image forming material. It is preferably in the range of ° C. When the atmosphere around the pre-heat roller 631 and the heating roller 641 is warmed to a constant temperature by the atmosphere heating heater 66, the heat generation temperature of the pre-heat roller 631 and the heating roller 6 are increased.
The heat generation temperature of 41 can be controlled more accurately.
Here, a preheat roller 631 and a heating roller 641 are replaced by a heat insulating member having a heat insulating property instead of the atmosphere heating heater 66.
The surroundings may be covered to keep the ambient temperature constant.

The state of the processing surface of the sheet 3 conveyed while being heated and pressed by the peeling unit 6 will be described in detail. When the pretreatment roller 631 heats the sheet 3 to which the treatment liquid 51 is attached and is sent to the peeling unit 6 to 136 ° C., the attached image forming substance flows due to the action of the treatment liquid 51 and heat. It becomes a state. More specifically, paper 3
The image-forming substance attached to the uneven surface of is in a fluid state. The image forming substance in the fluidized state is printed on the paper 3
The concave portion of the surface and the image forming substance that has entered the minute space inside the paper 3 come into contact with each other and become in an adhesive state. This paper 3
When it is sent to the heating roller 641 which generates heat at 100 ° C., the temperature of the paper 3 sharply drops from 136 ° C. to 100 ° C., and the temperature of the image forming substance in the fluidized state drops sharply. As a result, the image forming substance becomes softened and the cohesive force of the image forming substance is strengthened. Therefore, the image forming substance that has entered the concave portion on the surface of the sheet 3 and the minute space inside the sheet 3 is also integrated with the image forming substance on the surface of the sheet 3 and peels off.
Transferred to 61, 62. Further, since the processing liquid 51 for promoting image removal exists between the paper 3 and the softened image forming substance, the adhesive force between the paper 3 and the image forming substance is weakened. As described above, the peeling sheet has a strong cohesive force between the image forming substance and the peeling sheets 61 and 62 and a weak adhesive force between the image forming substance and the sheet 3.
When the sheets 61 and 62 are peeled off from the sheet 3, the image forming substance moves to the peeling sheets 61 and 62, and the image forming substance can be completely removed from the sheet 3.

The sheet 3 which has passed through the heating roller 641 and the peeling sheets 61 and 62 are separated by the separating block 65, and the sheet 3 from which the image forming substance has been removed is sent to the finishing unit 7 through the guide path 9c. Peeling sheet 6 with an image-forming substance attached
1, 62 are removed by the spiral roll 691 of the cleaner 69 and are stored in the cleaning container 692. The paper 3 sent to the finishing unit 7 is stretched while water is removed while being conveyed by the water-conveying belt 74, wrinkles, corrugations, curls and the like are also removed, and is discharged to the paper discharge unit 8 as recycled paper. To be done.

The treatment liquid 51 that can be used is not limited to the treatment liquid described in the above embodiment, but water,
At least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing a water-soluble polymer, an aqueous solution containing a surfactant, and an aqueous solution containing a water-soluble polymer and a surfactant can be used. Further, these water or aqueous solution may contain a predetermined organic solvent. Furthermore, the treatment liquid 51
Alternatively, only an organic solvent may be used.

As the water-soluble polymer, for example, starchy substances (such as starch starch, potato starch, tapioca starch, wheat starch, corn starch, etc.), mannan (konjac, etc.), seaweeds (funori, agar, Natural polymers such as sodium alginate), plant mucilages (Trolloiye, tragacanth gum, gum arabic, etc.), microbial mucilages (textran, levan, etc.), proteins (such as glue, gelatin, casein, collagen, etc.), and cellulosics. -Semi-synthesized polymers of viscose, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, etc., starch type (soluble starch, carboxynetyl starch, dialdehyde starch, etc.) -, Synthetic polymers and the like, but are not limited to these. No.

Examples of the organic solvent contained in water or an aqueous solution include, for example, turpentine, dipentene, butyl acetate, carbon tetrachloride, cellosolve acetate, xylene, toluene, ethyl acetate, diacetone alcohol. , Methyl cellosolve acetate, benzene, methyl ethiketone, methyl acetate, methylene chloride, ethylene dichloride, cyclohexane, cellosolve, dioxane, acetone, methyl cellosolve, cyclohexanol, butanol and the like. It is not limited.

Examples of the organic solvent which can be used alone are hydrocarbon solvents such as hexane, heptane, octane, nonane, spirit, naphtha Nos. 1 to 6 (trade name of Shell Petroleum Co.), Isopar E, L, K and V. (Product name of Exxon Co., Ltd.), IP solvent (Product name of Idemitsu Petroleum Co., Ltd.),
Shell-sol 70,71, Solvesso 100,150
(Trade name of Shell Oil Co., Ltd.), Ascom OMS, 460
(Product name of Spirits), Vegazole 1030, 21
30, 3040 (trade name of Mobile Oil Co., Ltd.) and the like. In addition, Fluorine FC4 which is a fluorine-based solvent
0,43,70,77 (trade name of Sumitomo 3M Co., Ltd.), Aflude E10,16,18, etc., Silicone solvent Shin-Etsu Silicon KF96 (trade name), Toray Silicon S
H200,344 (trade name), Toshiba Silicone TSF4
31 (brand name) and the like, but not limited thereto.

In the above embodiment, the case where the preheat roller 631 and the heating roller 641 are formed in the shape of a cylinder having a smooth outer surface has been described, but either the preheat roller 631 or the heating roller 641 is used. On one or both outer surfaces, a plurality of irregularities may be provided, or as shown in FIG. 2, a plurality of irregularities 632 (642) along the circumference may be provided to form a groove.

For example, when a plurality of irregularities 632 are provided on the surface of the preheat roller 631, the irregularities 632 on the surface cause
It is possible to intermittently press the peeling sheets 61 and 62, which hold the paper 3 forming the image forming substance in close contact. Therefore, the image forming substance existing in the concave portion of the sheet 3 can be easily removed, and the adhesive force between the peeling sheets 61 and 62 and the image forming substance can be strengthened. Further, when unevenness 642 is provided on the surface of the heating roller 641, when the peeling sheets 61 and 62 are in contact with the heating roller 641, the unevenness 642 on the surface is intermittently brought into contact with the peeling sheet 642. To 6
A cyclic strength is applied to the pressure and heat applied to 1,62. As a result, the peeling efficiency of the image forming substance can be increased. Further, since the contact area of the heating roller 641 with the peeling sheets 61 and 62 becomes small and the thermal conductivity deteriorates, the heating temperature of the pre-heat roller 631 is controlled by the heating roller 641.
Since the image forming substance can be drastically lowered by, the efficiency of transferring the image forming substance to the peeling sheets 61 and 62 can be increased. The pitch of the grooves formed by the unevenness 632 provided on the surface of the preheat roller 631 is preferably in the range of 0.5 to 3.0 mm. That is, if the pitch of the grooves due to the irregularities 632 is too small or too large, it becomes impossible to give periodic strength to the pressure and heat applied to the peeling sheets 61 and 62.

In the above embodiment, the case where the preheat portion 63 of the peeling unit 6 is composed of two preheat rollers 631 has been described, but as shown in FIG. 3, two preheat rollers 631 are used. A plurality of rotatable small-diameter rollers 6 for pressing the peeling sheets 61 and 62 onto the preheat roller 631 at positions facing the contact surfaces of the peeling sheets 61 and 62 of 631.
33, and a roller holding portion 63 that holds the small-diameter roller 633.
4 and a pressure roller group 636 having a pressure mechanism portion 635 composed of, for example, a compression spring may be provided. By providing the pressure roller group 636 in this manner, the peeling sheets 61 and 62 sandwiching the sheet 3 are conveyed when the peeling sheets 61 and 62 are conveyed along the preheat roller 631. While the plurality of small-diameter rollers 633 rotate, the pre-heat roller 63
The peeling sheets 61 and 62 can be smoothly conveyed by pressing the sheet 1 against the sheet 1. Further, since the plurality of small-diameter rollers 633 are in point contact with the peeling sheets 61 and 62, the small-diameter rollers 6 are provided.
33 and the small-diameter roller 633 between the peeling sheets 61, 6
The pressure applied to 2 is released. Therefore, the small diameter roller 6
Since the pressure applied to the peeling sheets 61 and 62 by 33 is intermittently repeated, the image forming substance existing in the concave shape of the sheet 3 can be reliably peeled off and the peeling sheets 61 and 62 can be reliably peeled off. The adhesion of the imaging substance to the can also be increased.

Further, as shown in FIG.
The outer peripheral surface of the roller 631 is provided with arcuate irregularities 637 that mesh with the small-diameter rollers 633 of the pressure roller group 636 so that the arcuate irregularities 637 provided on each pre-heater 631 mesh with each other. May be. When the arcuate irregularities 637 of the pre-heat rollers 631 are meshed with each other in this manner, when the peeling sheets 61 and 62 pass between the pre-heat rollers 631 and when the pre-heat rollers 631 are passed. Controller 63
1 and the pressure roller group 636, the peeling sheets 61 and 62 are intermittently heated and pressed to promote fluidization of the image forming substance and to form concave portions of the paper 3. The existing image forming substance can be surely adhered. Further, the adhesive force between the fluidized image forming substance and the peeling sheets 61 and 62 can be strengthened.

In each of the above embodiments, the case where the preheat roller 631 is used for the preheat portion 63 has been described, but as shown in FIGS.
It may be configured by a flat plate-shaped preheat unit 639 having a wavy guide path 638 therein. This prehi
The unit 639 is made of metal, ceramics, heat-resistant plastic, or the like, and has a resistance heating wire 639a therein as shown in FIG. 5, or a plurality of lamp heaters 639b as shown in FIG. is doing. When the peeling sheets 61 and 62 are conveyed along the corrugated guide path 638, a predetermined amount of heat is supplied to the peeling sheets 61 and 62 to heat them. In this way, the peeling sheet 61,
When 62 passes through the preheat unit 639, the conveyed peeling sheets 61 and 62 bend along the guide path 638, and the conveyed peeling sheets 61 and 62 and the preheat unit 639 come into contact with each other. Since the area is increased, the heat conduction to the peeling sheets 61 and 62 can be enhanced, the fluidization of the image forming substance is promoted, and the image forming substance and the peeling sheets 61 and 62 in the fluidized state are promoted. It can also increase the adhesive strength with.

Further, as shown in FIGS. 7 and 8, a plurality of rotatable small-diameter rollers 638a may be provided in the concave and convex portions facing each other above and below the guide path 638 of the preheat unit 639. By providing the small-diameter rollers 638a on the facing concave and convex portions of the guide path 638 in this manner, the peeling sheets 61 and 62 passing through the guide path 638 can be smoothly conveyed. In addition, since the small-sized rollers 638a apply intermittent pressure to the peeling sheets 61 and 62, the fluidity of the image forming substance and the adhesiveness with the image forming substance that has penetrated into the concave portions of the paper 3 are improved. Can be improved.

In the above embodiment, the case where the treatment liquid 51 is applied to only one side of the paper 3 by the liquid supply unit 5 has been described. However, as shown in FIG. 9, a pair of treatment liquids 51 in the treatment liquid container 52 is used. When it is supplied to both sides of the sheet 3 from the coating roller 54, the image forming substance of the sheet 3 having the image forming substance adhered to both sides can be removed at the same time, and the regenerating efficiency of the sheet 3 can be improved.

When simultaneously removing the image-forming substances adhering to both sides of the paper 3 as described above, the amount of the processing liquid 51 applied to the paper 3 by the liquid supply unit 5 increases. For this reason, the peeling sheets 61 and 62 sandwiching the paper 3 are heated by the preheat portion 63 of the peeling unit 6, and then the temperature is rapidly lowered by about 40 degrees by the heating roller 641 of the heating / pressurizing peeling portion 64. At this time, the heat storage effect of the treatment liquid 51 and the peeling sheets 61 and 62 causes a gradual temperature drop. Therefore, as shown in FIG. 9, a forced cooling device such as a cooling fan 643 is provided in the heating / pressurizing peeling unit 64, and the peeling sheets 61, 62 conveyed by the plurality of heating rollers 641 are connected to the preheat unit 63. Forced cooling from the set temperature to the set temperature of the heating roller 641,
By rapidly lowering the temperature of the fluidized image forming substance to the softening temperature, it is possible to further improve the adhesiveness between the peeling sheets 61 and 62 and the image forming substance.

SPECIFIC EXAMPLE 1 A copying machine used in the market (for example, RICOPY FT2200 manufactured by Ricoh Co., Ltd.)
This copy paper 3 is intended for the copy paper 3 (trade name of type 6200 manufactured by Ricoh Co., Ltd.) on which a hydrophobic image is formed with the product name).
An attempt was made to remove the hydrophobic image formed on the surface. As the treatment liquid 51, 22% by weight of aerosol OT70PG surfactant (trade name of Mitsui Cytec Co., Ltd.) and 2-methyl-2,4-
A mixed aqueous solution of 5% by weight of pentanediol was used. As the peeling sheets 61 and 62, those made of polyethylene ether quent were used.

The preheat portion 63 of the peeling unit 6 has a preheater group having a pressure roller group 636 as shown in FIG.
Troller 631 was used. And type 6200 A
The processing liquid 51 is supplied from the liquid supply unit 5 to the 4-size copying paper 3.
0.5g, then send to the peeling unit 6, 136
A preheat roller 631 having an exothermic temperature of .degree. C. and a heating roller 641 having a temperature of 98.degree. As a result, the reproduced copy paper 3 does not have minute toner residue, does not extend to the paper itself, and does not have wrinkles, waviness, or curl, and is reproduced in a state in which recopying and rerecording are possible. It was Further, the same copying paper 3 was repeatedly copied and reproduced five times, but the reproduced copying paper 3 was hardly deteriorated.

[Specific Example 2] Further, as shown in FIG. 9, the A4 size copy paper 3 having hydrophobic images formed on both sides is used, and the liquid supply unit 5 is capable of applying the treatment liquid 51 on both sides.
1.0 gram of the treatment liquid 51 was applied, heated and pressed under the same conditions as in the above-mentioned specific example 1 to perform a peeling treatment and a finishing treatment. As a result, minute toner residue was not generated on both sides of the reproduced copy paper 3, and the copy paper 3 was not stretched, wrinkled, wavy, or curled. Further, double-sided copying and reproduction were repeated 5 times on the same copy paper 3, but the reproduced copy paper 3 was hardly deteriorated.

[0071]

As described above, according to the present invention, the paper supplied from the paper feeding unit is applied with a fixed amount of the processing liquid which makes the adhesion state of the image forming substance unstable in the liquid supply unit, and the paper is applied to the paper. Since the swelling phenomenon is caused, the contact area of the image forming substance with respect to the paper can be reduced and the adhesion of the image forming substance with respect to the paper can be weakened.

Further, since the paper coated with the treatment liquid is sandwiched between the pair of peeling sheets and preheated by the preheater, the adhesive force of the image forming substance adhering to the paper can be weakened. Therefore, the image forming substance can be easily peeled off from the paper.

Further, the paper sheet which has passed through the preheat roller is sent to the heating / pressurizing peeling portion in a state of being in close contact with the peeling sheet, and bending stress is applied by the six heating rollers arranged in zigzag. While being heated and pressed, the contact surface between the peeling sheet and the sheet is expanded and contracted, so that the image-forming substance can be peeled from the sheet and reliably adhered to the peeling sheet.

Further, by setting the heat generation temperature of the preheat roller for heating the paper adhered to the peeling sheet within the range of 115 to 160 ° C. which is the fluidization temperature of the image forming substance, the paper adheres to the paper. Fluidization of the image forming substance existing in the paper surface can be promoted, and the image forming substance that has entered into the concave portion of the paper surface and the minute space inside the paper is brought into contact with the image forming substance on the paper surface and adhered securely. be able to.

Further, the heating temperature of the heating roller is set in the range of 70 to 100 ° C., which is the softening temperature of the image forming substance, and the temperature of the image forming substance in the fluidized state is rapidly changed to the softening state. The image forming substance that has entered the concave portion of the surface and the minute space inside the paper can also be transferred to the peeling sheet together with the image forming substance on the paper surface, and the image forming substance can be completely removed from the paper. Recycled paper can be obtained which can be removed and is free of image-forming substances.

The atmosphere around the preheater roller and the heating roller is warmed by an atmosphere heating heater to a constant temperature, or a heat insulating member having a heat insulating property is used to heat the preheater roller and the heating roller. The temperature of the pre-heat roller and the heating roller can be controlled with high accuracy by covering the circumference of and keeping the ambient temperature constant.

By intermittently heating and pressing the peeling sheet by providing a plurality of irregularities on the surface of the preheat roller or by providing a plurality of grooves which are not parallel to the conveying direction of the peeling sheet. The image forming substance existing in the concave portion of the paper can be easily removed.

The preheat portion is pressed against the outer peripheral surface of each preheat roller and at least two preheat rollers for guiding the peeling sheet holding the paper, and the paper is sandwiched. By forming the peeling sheet with a plurality of rotatable pressure rollers that guide the peeling sheet closely to the preheat roller, the peeling sheet sandwiching the paper can be placed along the preheat roller. , The peeling sheet is pressed against the preheat roller while the plurality of pressure rollers rotate.
The peeling sheet can be conveyed smoothly.

Further, since the pressure on the peeling sheet is intermittently repeated by a plurality of pressure rollers, the image forming substance existing in the concave shape of the sheet can be surely peeled off. The adhesion of the image-forming substance to the peeling sheet can also be increased.

Further, when the preheat roller is provided with arcuate irregularities engaging with the pressure roller on the outer peripheral surface, and each preheater is arranged so that the arcuate irregularities engage with each other, the preheat roller is arranged. Between the pre-roller and the pressure roller to accelerate fluidization of the image-forming substance by intermittently heating and pressurizing the peeling sheet both when passing between the pre-roller and the pressure roller. be able to.

Further, the preheat portion may be composed of two heat generating plates whose opposite surfaces are corrugated, or a plurality of pressure rollers rotatable on the opposite surfaces of the two heat generating plates. By providing the la, the peeling sheet can be intermittently heated and pressed, and the fluidization of the image forming substance can be promoted.

[0082]

[Brief description of drawings]

FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention.

FIG. 2 is a perspective view showing another example of the preheat roller.

FIG. 3 is a configuration diagram showing a third example of a preheat portion.

FIG. 4 is a configuration diagram showing a fourth example of a preheat portion.

FIG. 5 is a configuration diagram showing a fifth example of a preheat portion.

FIG. 6 is a configuration diagram showing a sixth example of a preheat portion.

FIG. 7 is a configuration diagram showing a seventh example of a preheat portion.

FIG. 8 is a configuration diagram showing an eighth example of a preheat portion.

FIG. 9 is a sectional view showing the structure of another embodiment of the present invention.

[Explanation of symbols]

1 Paper recycling device 3 sheets 4 Paper feeding unit 5 Liquid supply unit 6 Peeling unit 7 Finishing unit 8 Paper ejection unit 51 Treatment liquid 52 Processing liquid container 53 Conveyor Roller 54 Application Roller 61, 62 peeling sheet 63 Preheat section 64 Heat and pressure peeling unit 65 Separation Block 66 atmosphere heating heater 631 preheat roller 641 heating roller

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-320638 (JP, A) JP-A-8-211793 (JP, A) JP-A-5-150540 (JP, A) JP-A-4- 333088 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G03G 21/00 G03G 21/00 570-578 G03G 21/10-21/12

Claims (11)

(57) [Claims] 1. An image removal promoting substance application part, a peeling part, and a finisher provided along a guide path of a recording material, and the image removal promoting substance application part has an image forming substance formed on the surface thereof. An image removal accelerating substance, which is provided on the entry side of the recording material and makes the adhesion state of the image forming substance stably adhering to the surface of the recording material unstable, is provided. A sheet, a preheat portion, and a heating and pressure peeling portion, which are provided downstream of the image removal promoting substance application portion, and the pair of peeling sheets are composed of endless sheets wound up and down. Both sides of the recording material provided with the removal-promoting substance are sandwiched and conveyed, and the preheat portion does not heat the release sheet sandwiching the recording medium to the fluidization temperature of the image-forming substance.
Pressure to make the release sheet adhere to both sides of the recording material,
The heating / pressurizing peeling section has a plurality of heating rollers arranged in a zigzag pattern, is provided on the downstream side of the preheat section, and forms an image on the recording material and the peeling sheet in close contact with the recording material. Material soft
The image forming substance adhering to the surface of the recording material is exfoliated and adhered to the exfoliation sheet by applying a bending moment to the exfoliation part while heating to the exothermic temperature, and the finish is provided downstream of the exfoliation part, An apparatus for reproducing a recording material, wherein an image removal promoting substance is removed from the recording material from which the image forming substance has been peeled off. 2. The apparatus for reproducing a recording material according to claim 1, wherein the preheat portion has at least two preheat rollers for guiding a peeling sheet sandwiching the recording material. 3. The reproducing apparatus for a recording medium according to claim 2, wherein the preheat roller has a plurality of irregularities on the surface. 4. The reproducing apparatus for a recording material according to claim 3, wherein the pre-heat roller has a plurality of grooves formed by projections and depressions along the circumference on the surface. 5. The apparatus for reproducing a recording material according to claim 4, wherein the plurality of grooves of the preheat roller are formed so as not to be parallel to the conveying direction of the peeling sheet. 6. The preheat portion is press-contacted with at least two preheat rollers for guiding a peeling sheet sandwiching a recording material and the outer peripheral surface of each preheat roller. 2. The recording material reproducing apparatus according to claim 1, further comprising a plurality of rotatable pressure rollers for guiding the peeling sheet sandwiching the material in close contact with the preheat roller. 7. The preheat portion is at least two preheat rollers for guiding a peeling sheet sandwiching a recording material, and the preheat roller is pressed against the outer peripheral surface of each preheat roller to be recorded. The pre-roller has a plurality of rotatable pressure rollers that guide the peeling sheet sandwiching the material in close contact with the pre-heat roller, and the pressure roller is provided on the outer peripheral surface of the pre-heat roller. 2. The apparatus for reproducing a recording material according to claim 1, wherein arcuate irregularities are formed so as to mesh with each other, and each preheat roller is arranged so that the arcuate irregularities mesh with each other. 8. The reproducing apparatus for a recording material according to claim 1, wherein the preheat portion has two heat generating plates whose opposing surfaces are formed in a wavy shape. 9. The apparatus for reproducing a recording material according to claim 8, wherein a plurality of rotatable pressure rollers are provided on the surfaces of the two heat generating plates which face each other. 10. A preheat portion of the peeling portion and heat and pressure.
The peeling portion is covered with a blocking member containing a heater.
Recording material reproduction device. 11. The exothermic temperature of the preheat portion of the peeling portion.
Was set in the range of 115 ~ 160 ° C., heating temperature of the heating and pressing the releasing portion
The degree is set in the range of 70 to 100 ° C.
A recording material reproducing apparatus according to any one of the above.