JPH11174918A - Reproducing device for material to be recorded - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate an image forming material stuck on a separating member with a simple constitution, and to make a whole device simple structured and small sized. SOLUTION: This device is allowed to surely scrape off the image forming material from a separating sheet 51 by providing plural projecting and recessing parts on a surface of a heat pressurization roller 53, letting the image forming material being stuck on the material to be recorded 2 intermittingly suck to the separating sheet 51 in the traveling direction, and making opportunities for a scrap off blade 551 to hook on the image forming material increased, at the time of removing the image forming material stuck on the separating sheet 51 by the scrap off blade 551.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine, a facsimile, a printer, a printing machine, etc., which removes an image forming substance formed on a recording material such as recording paper and reproduces the recording material. Simplification of the playback device, especially the entire device,
The present invention relates to downsizing and easy maintenance.

[0002]

2. Description of the Related Art In recent years, due to the rapid development of office automation, printer paper, copy paper, and the like have been used in large quantities. Accordingly, a large amount of waste paper is generated from offices. Producing such a large amount of paper may lead to global environmental degradation due to excessive deforestation. In addition, disposal of a large amount of waste paper requires a great deal of cost, and there is a possibility that the disposal of these waste papers may deteriorate the local environment. Therefore, various reproduction techniques have been proposed for processing unnecessary copy paper and the like and reusing them as recycled paper.

For example, a method disclosed in Japanese Patent Application Laid-Open No. 1-297294 discloses a mold release method such that an image forming substance formed of plastic, metal, paper having low liquid permeability, ceramic or the like as a recording material is difficult to adhere. When printing using the processed material and removing the image-forming substance printed on the recording material, cover the image-forming substance with a cleaning material made of a heat-meltable material, cool it down, An image forming substance forming an image or the like is removed. Further, JP-A-1-101576 and JP-A-1-1015
In the method disclosed in Japanese Patent Publication No. 77, a sheet on which an image is formed by a toner resin is immersed in a soluble solvent of the toner resin, and ultrasonic vibration is applied to remove the toner.

However, in the method of using a recording material which has been subjected to a release treatment so that the image forming material is not easily adhered, the recording material must be subjected to a release treatment in advance to significantly reduce the adhesive force with the image forming material. Therefore, it is difficult to apply to printer paper and copy paper. Further, the method using an organic solvent has problems in pollution, inflammation and toxicity, and it is difficult to use it in ordinary offices and homes.

On the other hand, for example, Japanese Patent Application Laid-Open No. 7-13383 discloses a method selected from the group consisting of an aqueous solution containing water or a surfactant, an aqueous solution containing an aqueous polymer, and an aqueous solution containing a surfactant and an aqueous polymer. Prepare a processing solution for promoting image removal which is at least one kind of water or aqueous solution,
This treatment liquid is supplied to a recording material composed at least in part of a paper layer mainly composed of cellulose fibers, and is treated by a thermoplastic ink (toner) stably adhering to the surface of the recording material. Discloses a reproduction method in which the adhesion state of a hydrophobic image is made unstable, and the hydrophobic image is peeled from a recording material by heat bonding, heat pressure bonding, or pressure bonding to a sticking release member. Have been. Further, Japanese Patent Application Laid-Open No. 8-44260 discloses a reproducing apparatus in which a small amount of an image removal accelerating liquid having a low moisture content enables removal of toner from a recording material to reduce power consumption. Further, Japanese Patent Application Laid-Open No. 9-197926 discloses that a roller for pressing a recording material against a peeling member is provided with irregularities, and that the toner adhering to the recording material is partially removed so that the toner is removed in multiple stages. A good peeling rate is obtained while preventing a jam due to poor separation between the recording material and the peeling member. According to these methods, the use of special paper or toner is not required, the paper is not significantly damaged, and a highly safe paper recycling that does not adversely affect the human body and the environment is realized. Can be.

As described above, the peeling member which adheres and peels off the image forming substance adhered to the recording material is cleaned by a peeling member cleaning means in order to obtain a stable image removing performance. As the peeling member cleaning means, those which are physically scraped with a spiral roller or blade are often used. However, in order to remove the image forming substance strongly adhered to the peeling member with the spiral roller, it is necessary to increase the pressure for pressing the spiral blade against the peeling member, the number of revolutions of the spiral blade, and the like. In order to secure a driving source and the like, the size of the peeling member cleaning unit is increased. When the blade is pressed and scraped, a driving source is not necessary, but the cleaning ability is often insufficient.

For example, in Japanese Patent Application Laid-Open No. 6-324601, a large number of recesses are provided on the surface of a base roller made of, for example, metal as a peeling member, and the same resin or the like as the resin of the image forming substance is filled in the recesses. Then, a part that is easily adhered to the image forming substance and a part that is less likely to adhere to the image forming substance than the part are exposed on the surface. The material to be formed is heated and pressed to be partially adhered, and the image-forming material that is partially projected and adhered to a portion that is likely to be adhered is cut off by a cutting member so as to smooth the contact surface with the recording material. I have.

Japanese Patent Application Laid-Open No. 8-262937 discloses a high adhesion portion made of an organic polymer such as polyethylene terephthalate or polyether ether ketone on the surface of a release member.
An organic polymer is provided with a low-adhesion portion in which inorganic powders such as calcium carbonate and titanium oxide are uniformly dispersed to reduce the adhesive force between the peeling member and the image forming material and facilitate the cleaning of the peeling member. At the same time, the wear resistance of the peeling member is improved by the dispersed inorganic powder to extend the life of the peeling member.

[0009]

As disclosed in JP-A-6-324601, as a peeling member, a portion which easily adheres to the image forming substance and a portion which does not easily adhere to the surface of the base roller are mixedly exposed on the surface. When the peeled member is heated and pressed against the peeling member to partially protrude and cut off the adhered image forming material and flatten the contact surface with the recording material, the image forming material softened by heating is used. When cutting off the image forming material, the stress applied to the image forming material does not act on the adhesive interface due to the softening of the image forming material, resulting in a dispersed force, causing deformation or ductile destruction of the image forming material. It is not easy to reliably cut off the substance and flatten the contact surface with the recording material. In order to avoid such a state, the image forming substance attached to the recording material may be cooled and hardened. However, since the peeling member is in a roller shape, heat transfer from the surroundings and the peeling member itself are not performed. It is difficult to provide sufficient cooling due to the large heat capacity.

[0010] Further, as shown in JP-A-8-262937, a high adhesion portion and a low adhesion portion are provided on the surface of the peeling member,
If the adhesive force between the peeling member and the image forming substance is reduced almost uniformly, there is a possibility that the image forming substance on the recording medium may be poorly removed in some cases.

SUMMARY OF THE INVENTION It is an object of the present invention to improve such disadvantages and to obtain a recording material reproducing apparatus in which an image forming substance adhered to a peeling member is removed with a simple structure and the whole apparatus is simple and small. Things.

[0012]

According to the present invention, there is provided an apparatus for reproducing a recording material, comprising the steps of: forming a recording material on a recording material having a film-like fixed image made of a thermoplastic or heat-fusible image forming substance; An image forming substance adhering to the recording material is exfoliated by applying pressure while heating a peeling member having an adhesive force greater than the adhesive force between the substance and the image forming material adhering to the peeling member. A reproducing apparatus for reproducing a recording material by removing a forming substance, wherein a peeling member is formed in a film shape,
The image forming substance adhered to the recording material is intermittently adhered in the moving direction of the film-like peeling member, and the image forming substance adhered to the peeling member is removed by a cutting member having a blade at a tip. And

It is preferable that the cut-off member is constituted by a blade which comes into sliding contact with the moving peeling member.

A roller member having an uneven surface is provided on a pressing means for pressing the peeling member against the recording material, and the image forming substance adhering to the recording material is intermittently moved in the moving direction of the film-like peeling member. It is good to adhere to.

The surface of the peeling member is provided with an intermittent distribution of a portion having good adhesion and a portion having poor adhesion to the image forming material by a chemical or physical treatment, so that the image forming material adheres to the recording material. May be attached intermittently in the direction of movement of the film-like release member.

Further, it is preferable that the cut-off member is arranged so that the entire tip of the cut-off member comes into contact with the peeling member to which the image-forming substance does not adhere at a certain point in the image-forming substance removing step.

It is preferable that the surface of the peeling member is cooled immediately before removing the image forming substance attached to the peeling member.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording material reproducing apparatus according to the present invention includes a paper feeding unit for storing a recording material such as copy paper or print paper having an image formed on its surface by an image forming substance; A liquid applying unit for applying an image removal accelerating liquid containing a surfactant that makes the adhesion state of the image forming substance stably adhered to the surface of the recording material, and an image forming substance adhering to the recording material And a drying unit and a paper receiving unit.

The peeling unit has a first peeling section and a second peeling section, and the first peeling section and the second peeling section respectively have a pair of peeling belts, a heating / pressing roller, a cooling unit, and a cleaning unit. Having. The release sheet is an endless belt made of an endless film, has a greater adhesive force with the image forming substance than the recording material, and has an image forming substance adhered to the recording material by sandwiching the recording material. And peeled off from the recording material. The heating / pressurizing roller conveys the release sheet sandwiching the recording material while heating and pressurizing the same, softens the image forming material on the recording material, and attaches it to the release sheet. The cooling unit cools the release sheet separated through the heating and pressing roller, and cools and hardens the image forming substance peeled off from the recording material and adhered to the release sheet. The cleaning unit is provided downstream of the cooling unit in the moving direction of the release sheet, and is pressed against the release sheet to scrape off the image forming substance attached to the release sheet.

On the surface of the heating and pressing roller in the first peeling section, a plurality of recesses and projections are provided by a concave portion and a convex portion parallel to the rotation axis of the heating and pressing roller. The substance is attached intermittently in the direction of movement of the release sheet.
The surface of the heating and pressing roller in the second peeling section is formed flat.

When the film-like image formed on the surface of the recording material is removed and reproduced, the recording material adhered with the image forming substance and stored in the paper feeding unit is sent to the liquid applying unit to remove the image. A certain amount of the accelerating liquid is applied to reduce the adhesive strength between the image forming substance and the recording material. The recording material to which the image removal accelerating liquid has been applied is sent to the first peeling section of the peeling unit and is sandwiched between the peeling sheets. The peeling sheet, which sandwiches and adheres to the recording material, is heated and pressurized when passing through the heating / pressurizing roller to peel off the image forming substance from the recording material and adhere to the peeling sheet. The image forming substance remaining on the recording material passing through the first peeling section is removed in the second peeling section. The recording material from which the image forming substance has been removed by the peeling unit is sent to a drying unit, where wrinkles and curls are removed while removing moisture, and collected as a recycled material in a paper receiving unit.

Further, the peeling sheet to which the image forming substance peeled off from the recording material is adhered is cooled by cooling means to cure the adhered image forming substance. The cured image forming substance is scraped off with a cutting blade of the cleaning unit and removed, and the contact surface of the peeling sheet with the recording material is flattened. Since the image forming substance adhering to the release sheet is cooled and hardened before being scraped off, the release sheet is removed.
The image forming substance adhering to the sheet is reliably removed, and the contact surface of the release sheet with the recording material can be flattened.
Further, when the release sheet is cooled, the release sheet is formed of a film having a small heat capacity, so that the release sheet can be easily cooled and the image forming substance can be surely cured. Further, since the image forming substance protruding from and adhering to the peeling sheet is removed only by cutting the rotating sheet into contact with the peeling sheet and pressing the blade, the movable unit is not required in the cleaning unit, and the configuration is simplified. And can be miniaturized.

Further, since the image-forming substance adhering to the recording material is intermittently adhered in the moving direction of the release sheet, the cutting blade is more likely to be caught by the image-forming substance, and the image is formed from the release sheet. The substance can be reliably scraped off.

[0024]

FIG. 1 is a block diagram of one embodiment of the present invention.
As shown in the figure, a reproducing apparatus 1 includes a paper feed unit 3 for storing a recording material 2 such as copy paper or print paper having an image formed on the surface by an image forming substance, and an image removal accelerating liquid applying unit (hereinafter, referred to as a unit). , A liquid applying unit) 4, a peeling unit 5, a drying unit 6, and a paper receiving unit 7. The liquid application unit 4 is disposed downstream of a guide path 8 that guides the recording material 2 from the paper supply unit 3.
The peeling unit 5 is connected to the liquid applying unit 4 via the guide path 9.
Is located downstream of. The drying unit 6 is arranged downstream of the peeling unit 5, and a paper receiving unit 7 is arranged downstream of the drying unit 6.

The recording material 2 stored in the paper feeding unit 3 is sent to the liquid application unit 4 through the guide path 8 by the transport rollers 31 and 32. The liquid applying unit 4 includes the recording material 2.
And a treatment liquid container 42 for storing the image removal accelerating liquid 41 which contains a surfactant which makes the adhesion state of the image forming substance stably adhering to the surface of the image removing substance 41 unstable. And a transport roller 43 for transporting the recording material 2
And a coating roller 4 disposed opposite to the transport roller 43.
4 and a pumping roller 45 for supplying the image removal accelerating liquid 41 to the coating roller 44 by partially immersing and rotating the image removal accelerating liquid 41 in the processing liquid container 42. The image removal accelerating liquid 41 stored in the processing liquid container 42 is supplied by pumping up the processing liquid in the liquid retaining container 46 with a pump 47, and keeping the amount of the processing liquid 41 in the processing liquid container 42 constant. 2 is given by a fixed amount.

The peeling unit 5 provided on the downstream side of the liquid applying unit 4 has a plurality of stages, for example, two-stage peeling portions 5a and 5b as shown in the figure, and a first peeling portion 5a and a second peeling portion 5a. The unit 5b includes a pair of peeling belts 51 and 52, a heating and pressing roller 53 having a built-in heating lamp, a cooling unit 54, and a cleaning unit 55. Release sheets 51, 5
Reference numeral 2 denotes an endless belt made of an endless film. One peeling sheet 51 is stretched around a plurality of stretching rollers 56 provided at an upper part through a heating / pressing roller 53, and the other peeling sheet 52 is heated. It is stretched around a plurality of tension rollers 57 provided at the lower part through the pressure roller 53. The release sheets 51 and 52 have a greater adhesive force with the image forming material than the recording material 2, and peel off the recording material 2 by bonding the image forming material adhered to the recording material 2. I do. Such a property may be such that the release sheets 51 and 52 themselves have the property of adhering the image forming substance, or the release sheets 51 and 52 and the member that adheres the image forming substance may be integrally formed. A heating / pressing roller 53 is zigzag disposed in the first peeling section 5a, and the peeling sheets 51 and 52 sandwiching the recording material 2 are conveyed while applying a bending stress by bending while applying heat and pressure. The image forming substance on the material 2 is softened and adhered to the release sheets 51 and 52.
The heating / pressurizing roller 53 of the second peeling section 5b softens the image forming substance remaining on the recording material 2 that has passed through the first peeling section 5a, and makes the image forming substance adhere to the peeling sheets 51 and 52. The surface of the heating and pressing roller 53 of the first peeling section 5a is
As shown in FIG. 5, a plurality of concaves and convexes are provided by a concave portion 53a and a convex portion 53b parallel to the rotation axis of the heating and pressing roller 53, and the surface of the heating and pressing roller 53 of the second peeling portion 5b is formed flat. I have. The cooling unit 54 is, for example, as shown in FIG.
The cooling fan is provided opposite to the recording materials 1 and 52, and cools and hardens the image forming material that is peeled off from the recording material 2 and adheres to the release sheets 51 and 52. The cleaning unit 55 includes a cutting blade 551 and a cleaning container 5.
52. As shown in FIG. 3, the cut-off blade 551 is provided downstream of the cooling unit 54 in the moving direction of the release sheets 51 and 52, and is pressed against the release sheets 51 and 52 by a spring 553 to contact the release sheets 51 and 52. The attached image forming substance is scraped off. The cleaning container 552 contains the removed image forming substance.

Examples of the material of the release sheets 51 and 52 of the release unit 5 include synthetic rubber such as isoprene rubber, neoprene rubber, chloroprene rubber, silicon rubber, butadiene rubber, and fluororubber, natural rubber, and bisphenol / epichlorohydrin condensate. Epoxy resin,
Amino resins such as alkyd resin, urea formaldehyde resin, butyl urea formaldehyde resin, butylated melamine formaldehyde resin, benzoguanamine formaldehyde resin, phenolic thermosetting resins such as terpene phenol resin, phenol ether resin, phenol resin, polyvinyl chloride, and polychlorinated resin Vinylidene, vinylidene chloride-acrylonitrile copolymer, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, ethylene-tetrafluoroethylene copolymer, polyvinylidene fluoride, vinyl copolymer polyvinyl butyral, polyvinyl formal, Vinyl copolymers such as polypropylene and polyethylene, acrylic resins such as polybutyl acrylate, polymethacrylic acid and polymethyl methacrylate, and polyimides Polyamides such as 6,6-nylon, 6-nylon, polycarbonate, polyethersulfone, polyetheretherketone, polyethylene terephthalate, polyethylenenaphthalate, pooriesters such as aromatic polyesters, polyphenylene sulfide, polyparabaranic acid, polyethernitrile, aramid, etc. Thermoplastic or thermosetting synthetic resin, metals such as nickel, iron and aluminum, Ni steel, stainless steel, Fe-Ni alloy, Co-Al alloy, monel, inconel, metal alloys such as duralumin and the like. it can.

The drying unit 6 heats the recording material 2 from which the image forming substance has been removed while applying a pressing force to the recording material 2.
1, a transport water absorbing belt 64 wound around the drum heater 62 and a transport roller 63 disposed around the drum heater 62 and absorbing water while transporting the recording material 2. Having.

The image-forming substance stably adhering to the surface of the recording material 2 stored in the paper feeding unit 3 of the reproducing apparatus 1 having the above-described structure can be formed by a usual electrophotographic method, thermal transfer method, This is a thermoplastic or heat-fusible image forming substance recorded on the recording material 2 by a method such as an ink jet printing method or a printing method using a hot melt ink. Specific examples include dry toners and wet toners for developing electrostatic latent images, inks impregnated in hot-melt ink sheets, and hot melt inks.

Examples of the thermoplastic or heat-fusible image forming substance include polystyrene, polyalkyl acrylate,
Polyalkyl methacrylate, styrene-acrylonitrile copolymer, styrene-acryl copolymer, styrene-
Containing at least one of butadiene copolymer, polyamide, polyethylene, polypropylene, alkyd resin, epoxy resin, polyvinyl acetate, ethylene vinyl acetate copolymer (EVA), unsaturated polyester, polyvinyl chloride, silicone resin, etc. Is mentioned. Examples of the coloring material contained in the image forming substance include inorganic and organic pigments such as carbon black, quinacridone derivatives, phthalocyanine derivatives, and benzidine yellow, but oil-soluble dyes are also used. Further, various additives are contained depending on the image forming method. In the electrophotographic system, a charge control agent is added. In the thermal transfer ink, various waxes are added as a vehicle, and a rosin (abietic acid) derivative is added as an adhesive.

Regardless of which image forming substance is used, the forming method forms a film-like image 10 on the surface of the recording material 2 as shown in the sectional view of FIG. Here, the film-like image 10 does not necessarily mean that the entire image forms a single film, but merely that the image forming substance does not penetrate into the recording material 2 or that the image is printed with an aqueous ink containing a dye. This means that the image forming substance is not adsorbed on the recording material 2 at a molecular level almost as in the case of the above.

When an image formed on the recording material 2 is removed, the image removal accelerating liquid 41 is applied to the recording material 2 as described above.
When the recording material 2 is provided, it is preferable that the recording material 2 has a layer which is easily wetted by the image removal accelerating liquid 41 at least in the vicinity of the surface on which the image is formed. For example, copy paper and print paper that are generally used in large quantities correspond to this, but are not limited to such paper.

Next, the operation of reproducing the recording material 2 by removing the film-like image 10 formed on the surface of the recording material 2 by the reproducing apparatus 1 configured as described above will be described.

The recording material 2 having the image forming substance attached thereto and stored in the paper feeding unit 3 is sent to the liquid applying unit 4 through the guide path 8 by the transport rollers 31 and 32. When the recording material 2 sent to the liquid applying unit 4 is transported by the transport roller 43, the image removing accelerating liquid 41 that makes the adhesion state of the image forming substance on the surface unstable by the application roller 44. Is given by a fixed amount. When the image removing accelerating liquid 41 is applied to the recording material 2 in this manner, the image forming substance and the recording material 2
And the adhesive strength with the adhesive decreases. The mechanism by which the adhesive force is reduced is not simple, and several mechanisms are thought to be involved. For example, when the image removal accelerating liquid 41 containing water as a main component is applied to the recording material 2 on which the film-like image 10 is formed, the thermoplastic or heat-fusible image forming substance formed on the surface of the recording material 2 is coated. Water permeates near the interface with the recording material 2. Due to the difference in the amount of swelling of the recording material 2 and the image forming substance due to the water, stress is generated, and the adhesive force between the two is greatly weakened.
On the other hand, if the amount of the image removal accelerating liquid 41 is reduced to save power and prevent the dimensional change of the recording material 2, the water content in the image removal accelerating liquid 41 also decreases. In such a case, it is unlikely that the adhesive strength decreases due to the difference in the amount of swelling between the recording material 2 and the image forming substance. Rather, components other than water are localized on the surface of the recording material 2 so that the surface of the recording material 2 is localized. It is considered that the physical or chemical properties change and the adhesive strength decreases. There are various types of the image removal accelerating liquid 41. In many cases, the main component is water, and various surfactants are added thereto. Also,
In addition to the surfactant, a wetting agent, a plasticizer, a pH adjuster, a preservative, a fungicide, a rust inhibitor and the like may be added. In recent years, solid-state image removal accelerators have also been developed.

The recording material 2 to which the image removal accelerating liquid 41 has been applied passes through the guide path 9 and the first peeling section 5 of the peeling unit 5
sent to a. Recording material 2 sent to first peeling section 5a
Are sandwiched between release sheets 51 and 52. When the peeling sheets 51 and 52 which are in close contact with the recording material 2 pass through the heating and pressing roller 53, they are heated and pressurized while applying a bending stress to the peeling sheets 51 and 52 to be recorded. The contact surface of the recording material 2 is stretched and contracted, and the image forming substance is transferred to the recording material 2.
And adhered to the release sheets 51 and 52. As described above, the image forming substance is removed from the recording material 2 and the recording material 2 is removed.
Release sheet 5 having greater adhesion to image forming substance than
In order to improve the contact property between the peeling sheets 51 and 52, the peeling sheets 51 and 52 are heated by heating the peeling sheets 51 and 52 which are in close contact with the recording material 2 when they are adhered to each other. As a result, the adhesive strength between the release sheets 51 and 52 and the image forming substance is increased. In the case of the recording material 2 made of a fibrous substance such as paper, the adhesion of the image forming substance to the fibers or the like is reduced by heating, and the adhesive force with the recording material 2 is reduced. When the image forming substance is peeled from the recording material 2 in this manner, heating and pressing the recording material 2 on which the film image 10 is formed is the same as, for example, a fixing process in a copying machine. This may increase the adhesive force of the substance to the recording material 2. However, since the component of the image removal accelerating liquid 41 exists at the interface between the recording material 2 and the film-like image 10, an increase in the adhesive force of the image forming substance to the recording material 2 can be prevented. The image forming substance can be peeled from the substrate. It is desirable that the temperature for heating the peeling sheets 51 and 52 that are in close contact with the recording material 2 therebetween is higher than the softening point of the image forming material and that the image forming material does not melt. That is, when the image forming material is melted, it is difficult to attach the image forming material on the recording material 2 to the peeling sheets 51 and 52 without dividing the image forming material into the recording material 2 and the peeling sheets 51 and 52. It is because it becomes.

The image forming substance remaining on the recording material 2 that has passed through the first peeling section 5a is removed by the second peeling section 5b. The recording material 2 from which the image forming substance has been removed by the peeling unit 5 is sent to the drying unit 6 to remove elongation, wrinkles, undulations, curls, etc. while removing moisture, and is collected in the paper receiving unit 7 as a recycled material. You.

The peeling sheets 51 and 52 to which the image forming material peeled off from the recording material 2 is attached are cooled by cooling means 54.
To cool the adhering image forming substance.
The cured image forming substance is supplied to the cleaning unit 55.
And scraping it off with a cutting blade 551.
The contact surfaces of the contacts 51 and 52 with the recording material 2 are flattened. The image forming material removed from the release sheets 51 and 52 is cleared.
In the container 552. Thus, the release sheet 5
Since the image-forming substance adhering to the sheets 1 and 52 is cooled and hardened and then scraped off, the image-forming substance adhering to the separation sheets 51 and 52 is surely removed and the separation sheet 5 is removed.
The contact surfaces of the first and second recording materials 2 can be made flat. Further, when the peeling sheets 51 and 52 are cooled,
Since the release sheets 51 and 52 are formed of a film having a small heat capacity, they can be easily cooled and the image forming substance can be surely cured. Further, the image forming substance projecting and adhering to the peeling sheets 51 and 52 is removed only by pressing the blades 551 that are cut off to the peeling sheets 51 and 52 that are driven in rotation. Is not required, and the configuration can be simplified and downsized.

The image forming substance adhering to the peeling sheets 51 and 52 removed by the cutting blade 551 of the cleaning unit 55 comes from the surface of the peeling sheets 51 and 52 where no image forming substance adheres. It is slightly excited. For example, an image formed by monochrome electrophotography is 10
It has a swelling of a thickness of μm to 20 μm. Therefore, the image forming substance can be scraped off by hooking the cutting blade 551 to the swell. If the image forming substance adheres to the entire surface of the release sheets 51 and 52,
Since there is no chance that the cutting blade 551 is caught, cleaning failure occurs. Therefore, when the image forming substance attached to the release sheets 51 and 52 is removed by the cutting blade 551, the image forming substance adheres to the release sheets 51 and 52 in the area of the release sheets 51 and 52 where the cutting blade 551 is in sliding contact. It is desirable that there are areas that are not. Further, when a continuous swelling of the image forming substance also exists in a part of the area of the release sheets 51 and 52 in sliding contact with the cutting blade 551, the clearance between the separation sheets 51 and 52 and the cutting blade 551 caused by the swelling causes The cutting blade 551 loses the chance of being caught by the image forming substance and causes cleaning failure. Therefore, the cutting-off blade 551 has
When scraping off the image forming substance in a certain area of the area 1, 52, the larger the number of times that the image forming substance does not swell in that area, that is, the release sheets 51, 5
If the image forming substance is intermittently adhered to 2, the cutting blade 551 is more likely to be caught by the image forming substance, and good cleaning can be performed.

Therefore, the first peeling section 5 of the peeling unit 5
As shown in FIG. 2, on the surface of the heating and pressing roller 53 of FIG.
A plurality of concavities and convexities are provided by a concave portion 53a and a convex portion 53b parallel to the rotation axis of the heating and pressing roller 53, and the surface of the heating and pressing roller 53 of the second peeling portion 5b is flattened. That is,
The adhesiveness between the release sheets 51 and 52 and the image forming substance depends on the pressing force of the heating and pressing roller 53 of the release unit 5.
Therefore, by providing irregularities on the surface of the heating / pressing roller 53 of the first peeling section 5a to give a periodic strength distribution to the pressing force, recording is performed on the peeling sheets 51 and 52 of the first peeling section 5a. The image forming substance adhering to the member 2 is intermittently peeled off and adhered, and the peeling sheet 51 of the first peeling section 5b,
At 52, the image forming substance intermittently remaining on the recording member 2 is peeled off and adhered. In this manner, the image forming substance adhering to the release sheets 51 and 52 of the first release section 5a and the second release section 5b can be reliably removed by the cutting blade 551 having one flat blade. it can.

As shown in FIG. 5A, the pattern of the unevenness on the surface of the heating and pressing roller 53 is formed by a concave portion 53a and a projecting portion 53b which are inclined at a fixed angle with respect to the rotation axis of the heating and pressing roller 53. By providing a plurality of irregularities, as shown in FIG.
As shown in (c), the concave portion 53a and the convex portion 53b may be provided intermittently.

In the above embodiment, the surface of the heating / pressing roller 53 of the peeling unit 5 is provided with irregularities, and the peeling sheets 51 and 5 are provided.
Although the case where the image forming substance is intermittently adhered to 2 has been described, the surfaces of the release sheets 51 and 52 are subjected to chemical or physical treatment so that a portion having good adhesion to the image forming material and a portion having poor adhesion to the image forming material are separated. You may make it distribute repeatedly along the moving direction of the release sheets 51 and 52. As a chemical treatment method for distributing portions having good and bad adhesion to the image forming substance on the surfaces of the release sheets 51 and 52, for example, the release sheets 51 and 52 are immersed in a chemical and the surface is coated with a desired functional group. It is to make. In many cases, the hydrophilicity of the surfaces of the release sheets 51 and 52 can be improved by introducing a hydroxyl group, a carbonyl group or a carboxyl group into the surface. When the release sheets 51 and 52 are made of resin, the release sheets 51 and 52 are immersed in a solvent.
Usually, various low molecular weight components are added to the resin for the purpose of improving workability. Generally, these are layers in which low molecular weight components migrate to the surface and are weak in adhesive strength (Weak bou
ndary layer). By immersing the resin-made release sheets 51 and 52 in a solvent, low-molecular-weight components are removed, so that surface modification can be performed. As another method, surface modification with a coupling agent such as a silane-based, titanium-based, organic phosphoric acid-based, or silyl peroxide-based is also effective. In this case, a relatively strong coating layer is formed on the surface by the chemical bonding between the surfaces of the release sheets 51 and 52 and the coupling agent and the coupling agent. A desired surface property can be obtained by selecting an appropriate functional group for the coupling agent and changing the coupling agent treatment conditions. As described above, since the chemical treatment can be achieved by immersion in a predetermined liquid, there is an advantage that the shape of the release sheets 51 and 52 is not limited. Also,
As the physical treatment method, for example, release sheets 51 and 52
For plasma treatment. In general, various kinds of gases can be used for the plasma treatment because low-pressure gas glow discharge is used, and various surface treatments can be performed. In addition, a material surface having a complicated shape can be treated due to the nature of glow discharge. Another method is to subject the release sheets 51 and 52 to corona treatment. Since the corona treatment is a discharge close to the atmospheric pressure, a large-scale and strict decompression equipment is not required.
The effects of these physical treatments have not yet been elucidated, but as a mechanism involved in adhesion,
Two points can be considered: increasing very fine surface irregularities and improving the hydrophilicity of the surface in the presence of oxygen. Further, since the physical treatment is a dry process, it does not require drying and waste liquid treatment steps as compared with a wet process, and thus has great advantages in terms of energy saving and no pollution.

As shown in FIG. 6, the pattern of the good and bad adhesive portions formed on the release sheets 51 and 52 in this manner is, for example, as shown in FIG.
And a pattern in which the bad portion 50b is provided orthogonal to the moving direction of the release sheets 51 and 52, a pattern in which the bad adhesive portion 50b is provided intermittently as shown in FIG. As shown in FIG. 6C, a pattern in which a portion 50 a having good adhesiveness and a portion 50 b having poor adhesiveness are provided at a fixed angle with respect to the moving direction of the release sheets 51 and 52.
There are various patterns similar to the concavo-convex pattern on the surface of the heating and pressing roller 53.

As described above, an uneven pattern is provided on the surface of the heating / pressing roller 53, or a portion having good and poor adhesion is formed on the surface of the release sheets 51 and 52, and image formation is performed on the release sheets 51 and 52. If the substance is applied intermittently,
At a certain point in the image forming substance removing step, the entire blade portion at the tip of the cutting blade 551 comes into contact with the surfaces of the release sheets 51 and 52 to which the image forming substance is not attached, so that the image forming substance can be more effectively removed. Can be removed. Therefore, as shown in FIG.
In the case where 1 is attached at a fixed angle to the moving direction of the release sheets 51 and 52, a plurality of cutting blades 551 having blades 551a inclined at a fixed angle to the moving direction of the release sheets 51 and 52 are used. When used or when the image forming substance 11 is intermittently adhered to the release sheets 51 and 52 as shown in FIG. 7B, the plurality of blades 551b are intermittently arranged according to the adhesion pattern. It is preferable to provide a plurality of cutting blades 551 having the same.

Various materials can be used as the material for the cutting blade 551.
Since the blades 1 and 52 are always in sliding contact with each other, it is preferable to increase the wear resistance by using a metal material such as stainless steel or brass at least at the tip of the blade.

In the above-described embodiment, the case where the image forming substance is peeled off after the image removal accelerating liquid 41 is applied to the recording material 2 has been described. However, the application of the reverse transfer preventing agent mainly composed of a chemical containing a surfactant is described. In the case where an image is formed using the recording material 2 whose surface has been modified by heating, the recording material 2 on which the image is formed is heated and peeled when the image forming substance is peeled off from the recording material 2.
Even if the pressure is applied, the action of the reverse transfer inhibitor does not increase the adhesive force of the image forming substance to the recording material 2, and it is not necessary to apply the image removal accelerating liquid 41. Therefore, the reproducing apparatus 1 that reproduces the recording material 2 by removing the image forming substance of the image formed on the recording material 2 whose surface has been modified in this way.
Need only be provided with the paper feed unit 3, the peeling unit 5, and the paper receiving unit 7, as shown in the configuration diagram of FIG.
The configuration of the playback device 1 can be simplified.

[Specific Example 1] For example, an image was formed on a copy sheet by a copying machine, and the formed image was removed by the reproducing apparatus 1 shown in FIG. 1 to reproduce the copy sheet. The release sheets 51 and 52 are made of polyetheretherketone (PEEK), and the release sheets 51 and 52 of the first release section 5a are locally reduced in adhesiveness by performing corona discharge treatment under predetermined masking conditions. 6A, an adhesive pattern is formed as shown in FIG. 6A, untreated release sheets 51 and 52 of the second peeling portion 5b are used, and the cut-off blade 551 is formed of stainless steel to form one flat sheet. One having a blade was used. As the image removal accelerating liquid 41, a 5% aqueous solution of an anionic surfactant was used. Then, the reproduction processing of 80,000 sheets of copying paper was continuously performed, and in each case, the recycled paper of stable quality without defective removal was obtained.

[Specific Example 2] Polycarbonate was used as the release sheets 51 and 52, and immersed in a chromic sulfate aqueous solution under predetermined masking conditions to form the same adhesive pattern as in Specific Example 1. Reproduction processing of 80,000 sheets of copy paper was continuously performed under the same conditions as in Example 1. In each case, recycled paper having stable quality without defective removal was obtained.

[Specific Example 3] Polyethylene terephthalate was used as the release sheets 51 and 52, and every other heating / pressing roller 53 of the first release section 5a was provided with a concavo-convex pattern shown in FIG. The sheet was formed to have a width of 20 mm, and the reproduction processing of 80,000 sheets of copying paper was continuously performed under the same conditions as in the specific example 1. In any case, recycled paper of stable quality without defective removal could be obtained.

[Specific Example 4] Polyimide was used as the release sheets 51 and 52, and reproduction processing of 80,000 copy sheets was continuously performed under the same conditions as in Specific Example 1. A stable recycled paper was obtained.

COMPARATIVE EXAMPLE 1 A stainless steel rotary brush roller was used instead of the cutting blade 551 having one flat blade formed of stainless steel used in the specific example 1, and the other conditions were the same as those in the specific example 1. As a result, the quality of the recycled paper was good, but when about 5,000 sheets were recycled, the release sheets 51 and 52 were broken.

[Comparative Example 2] The release sheets 51 and 52 were made of polyetheretherketone which had not been subjected to corona discharge treatment. A cleaning failure of 52 occurred, and when about 10 sheets of copying paper were regenerated, an image removal defect occurred, resulting in poor recycled paper quality. When the reproduction process was further continued, the copy paper was released from the release sheet 5.
Paper jams occurred because the papers could not be separated from 1,52.

[Comparative Example 3] When the same regenerating treatment as in Example 2 was carried out using polycarbonate that had not been chemically treated as the release sheets 51 and 52, cleaning failures of the release sheets 51 and 52 occurred. , Copy paper 10
When the reproduction processing was performed on about the number of sheets, defective image removal occurred, resulting in inferior recycled paper quality. When the reproduction process was further continued, the copy paper could not be separated from the release sheets 51 and 52, and a paper jam occurred.

[Comparative Example 4] When the heating and pressurizing roller 53 of the first peeling section 5a was made of an aluminum roller that was not subjected to unevenness processing and was subjected to the same regenerating treatment as in Example 3, the peeling sheet 51, A cleaning failure of 52 occurred, and when about 10 sheets of copy paper were reprocessed, image removal failure occurred, resulting in poor recycled paper quality. Therefore, when the processing was continued by increasing the pressing force of the cutting blade 551 against the release sheets 51 and 52, the cleaning failure was reduced. However, the release sheets 51 and 52 were restored when about 6,000 sheets were regenerated.
Fractured.

Comparative Example 5 An uneven pattern parallel to the rotation direction was formed on the heating and pressing roller 53 with a height difference of 10 μm and a width of 20 mm, and the same regenerating treatment as in Example 3 was performed. Cleaning failure occurred, and when about 10 sheets of copying paper were regenerated, poor image removal occurred, resulting in poor recycled paper quality. Therefore, when the processing was continued by increasing the pressing force of the cutting blade 551 against the release sheets 51 and 52, the cleaning failure was reduced. However, the release sheets 51 and 52 were restored when about 6,000 sheets were regenerated.
Fractured.

Comparative Example 6 When the regenerating process was performed under the same conditions as in Example 4 without operating the cooling means 54, cleaning failure of the release sheets 51 and 52 occurred, and about 100 copy sheets were regenerated. However, poor image removal resulted in poor quality of recycled paper. Therefore, when the processing was continued by increasing the pressing force of the cutting blade 551 against the release sheets 51 and 52, the cleaning failure was reduced. However, the release sheets 51 and 52 were restored when about 6,000 sheets were regenerated.
Fractured.

[0056]

As described above, according to the present invention, the peeling member is formed in a film shape, and the image forming substance adhered to the recording material is intermittently adhered in the moving direction of the peeling member. Since the intermittently adhered image forming substance is removed by the trimming member, the chance of the trimming member catching on the image forming substance can be increased, and the image forming substance can be reliably scraped from the peeling member. Can be.

Further, since the image forming substance protruding from and adhering to the peeling member is removed only by pressing the cut-off member against the peeling member which is driven to rotate, the cleaning unit does not need a movable portion, and the structure is simplified. The size can be reduced.

Further, a roller member having an uneven surface may be provided on the pressing means for pressing the peeling member against the recording material, or the surface of the peeling member may have good adhesion to the image forming material by a chemical or physical treatment. By providing an intermittent distribution of portions and bad portions, the image forming substance adhering to the recording material can be intermittently adhered in the moving direction of the film-like peeling member, and the cleaning of the peeling member can be performed. Efficiency can be increased and a good quality recycled material can be stably obtained.

Further, by arranging the cut-off member such that the entire tip of the cut-off member comes into contact with the peel-off member to which the image-forming substance is not attached at a certain point in the image-forming substance removing step, the cleaning of the peel-off member is performed. Efficiency can be further improved.

Further, before the image forming substance adhered to the peeling member is removed by the cutting member, the surface of the peeling member is cooled to cure the image forming substance, and then the image forming substance adhered to the peeling member by the cutoff member is removed. Since the removal is performed, it is possible to reliably remove the image forming substance adhered to the peeling member.

Further, since the peeling member is formed of a film having a small heat capacity, it can be easily cooled.
The image forming substance can be surely cured.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a surface state of a heating / pressing roller.

FIG. 3 is an arrangement diagram of a cooling means and a cutting blade.

FIG. 4 is a cross-sectional view showing an image formed on a recording material.

FIG. 5 is a perspective view showing another surface state of the heating and pressing roller.

FIG. 6 is a perspective view showing a surface state of a release sheet.

FIG. 7 is a layout view of a cutting blade.

FIG. 8 is a configuration diagram of another embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 reproduction device 2 recording material 3 paper feed unit 4 liquid application unit 5 peeling unit 6 drying unit 7 paper receiving unit 51 peeling sheet 52 peeling sheet 53 heating and pressurizing roller 54 cooling means 55 cleaning unit 551 cutting blade

Claims (6)

[Claims] 1. A peeling member having an adhesive force greater than an adhesive force between a recording material and an image forming material on a recording material having a film-like fixed image made of a thermoplastic or heat-fusible image forming material. Is a reproducing apparatus for removing the image-forming substance from the recording material by applying pressure while heating the recording medium to remove the image-forming substance adhering to the recording material and attaching it to the peeling member to reproduce the recording material. Forming a peeling member in the form of a film, adhering the image forming substance adhering to the recording material intermittently in the moving direction of the film-like peeling member, and cutting the image forming substance adhering to the peeling member at the tip end. An apparatus for reproducing a recording material, wherein the recording material is removed by a cut-off member having: 2. A recording material reproducing apparatus according to claim 1, wherein said cut-off member comprises a blade which comes into sliding contact with a moving peeling member. 3. A pressing means for pressing the peeling member against the recording material is provided with a roller member having irregularities on the surface, so that the image forming substance adhering to the recording material is moved in the moving direction of the film-like peeling member. 3. The recording material reproducing apparatus according to claim 1, wherein the recording medium is attached intermittently. 4. An image forming substance adhered to a recording material by providing an intermittent distribution of a portion having good adhesion to an image forming material and a portion having poor adhesion to the image forming material by chemically or physically treating the surface of the peeling member. The recording material reproducing apparatus according to claim 1, wherein the recording medium is intermittently adhered in a moving direction of the film-shaped separating member. 5. The cut-off member is arranged so that the entire tip of the cut-off member comes into contact with a peeling member to which the image-forming substance is not attached at a certain point in the image-forming substance removing step. 5. The recording material reproducing apparatus according to 3 or 4. 6. The peeling member surface is cooled immediately before removing the image forming substance attached to the peeling member.
6. The recording material reproducing apparatus according to 3, 4 or 5.