JP3312982B2 - Apparatus for removing image forming substance from image carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image carrier for removing an image forming material from an image carrier stably adhered by an image forming apparatus such as a copying machine, a facsimile, a printer and a printing machine. Relating to the image forming substance removing device of
More specifically, a release member having an adhesive force greater than the adhesive force between the surface and the image forming substance with respect to the image forming substance adhering to the surface of the image holding member is attached to the surface to which the image forming substance is adhered. Side, at least after being brought into contact with the image forming substance on the surface, the image carrier and the peeling member are separated from the image carrier having a peeling means for peeling the image forming substance from the surface. The present invention relates to an image forming substance removing apparatus.

[0002]

2. Description of the Related Art Conventionally, various methods and apparatuses for removing an image forming substance such as toner from a sheet as a recorded image holding member are known. For example, a method using a solvent is disclosed in
No. 1576 discloses that a sheet with toner attached thereto is immersed in a soluble solvent of a toner resin, and ultrasonic vibration is applied thereto.
There is disclosed a method for removing an image forming substance that releases toner dissolved in a solvent from the paper surface. Also, JP-A-4-3003
No. 95 discloses that a solvent is immersed in the printed portion of waste paper, adhered by a method such as spraying or coating to dissolve the toner,
There is disclosed an image forming substance removing method in which a dissolved toner is removed by a method such as washing, air suction, adsorbent contact, mechanical peeling, or electrostatic adsorption.

On the other hand, as a method without using a solvent, for example, Japanese Patent Application Laid-Open No. 2-55195 discloses a heat-meltable ink or an electrophotographic method in which a release agent is coated on a support and printed on an electrophotographic or thermal transfer system. An image-forming substance removing method in which toner is adhered to the ink peeling member by removing the ink peeling member by passing an ink peeling member between the heating roller and the pressure roller after superposing the ink peeling member on the printed body and cooling the toner. Is disclosed. Japanese Patent Application Laid-Open No. 4-64472 discloses at least an endless sheet having a hot-melt resin on the surface, a heat roller and a cooling roller for supporting and rotating the endless sheet, and a paper (erasable paper) with a release treatment on the surface. There is disclosed an eraser comprising a pressing roller for pressing the resin onto a softened or molten hot-melt resin, and a drive unit capable of moving the rollers in conjunction with each other. Also, Japanese Patent Laid-Open No. 4-8
Japanese Patent No. 2983 discloses two rollers provided in parallel to rotate while being pressed against each other and to pass the paper through the pressed position.
A heater for heating at least one of the rollers of the book, a scraper for separating the paper passing through the pressure contact point from the roller, and a cleaning device for removing the image forming substance attached to the roller from the roller. An imaging substance removal device is disclosed.

By the way, a method and an apparatus which do not use the above-mentioned solvent can be used, for example, to remove an image-forming substance from a recorded image carrier on which an image is recorded on ordinary paper having paper fibers exposed on the surface. In the fixing step of the electrophotographic method, the image forming substance is firmly fixed to the fibers on the surface of the image holding member, for example, by fusing the image forming substance mainly composed of the heat-fusible resin to the image holding member. When the imaging substance is removed, the paper fibers on the surface are peeled off together with the imaging substance, thereby damaging the paper quality.
In particular, when heat or pressure is applied to the above-mentioned ink peeling member, endless sheet or roller in order to enhance the removability of the image forming substance, depending on various conditions, the image forming substance and the image carrier may be conversely reversed. In some cases, the fixability of the resin was increased, making removal difficult.

[0005] Therefore, the applicant of the present invention has previously reported that a recorded image carrier contains water as a destabilizing agent, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and a mixture of a surfactant and a water-soluble polymer. Holding at least one kind of water or an aqueous solution selected from the group consisting of aqueous solutions containing, and interposing a peeling member, and peeling the image forming substance from the image holding member by heat bonding or pressure bonding to the peeling member. A method for removing an image forming substance has been proposed (for example, Japanese Patent Application No. 4-255).
No. 916). According to this, only the image forming substance can be removed without relatively damaging the paper quality of the image holding member.

[0006]

SUMMARY OF THE INVENTION Here, Japanese Patent Application No. Hei.
In the device for removing an image forming substance from an image carrier proposed in -255916 and the above-mentioned various image forming material removing devices,
Since the image forming substance is transferred from the image carrier to the peeling member or the like, when the peeling member or the like is used repeatedly, the image forming substance gradually accumulates on the surface of the peeling member or the like. . In order to prevent the accumulation of the image forming substance, the apparatus disclosed in Japanese Patent Application Laid-Open No. 4-82983 has been proposed to provide a cleaning device for removing the image forming substance on a roller to which the image forming substance is transferred. ing.

However, according to experiments conducted by the present inventor, it has been found that it is difficult to maintain good image-forming substance removal performance by simply removing the image-forming substance from the surface of the peeling member. After extensive research into the cause, even after removing the image-forming substance from the surface of the peeling member, a destructive component of the cleaning member itself for removing the image-forming substance and a component of the image carrier remain on the surface, and this is the image. It was found that the transferability of the image forming substance from the holder to the release member was deteriorated. For example, when a brush roller formed by innumerably implanting fibers made of brass or resin on a core material is used as the cleaning member, the image forming substance can be removed from the peeling member. Cannot be removed, and the brush breaking component (zinc or copper in the case of brass) of the brush roller adheres to the surface of the peeling member. The paper dust and the destructive components of the brush hinder the direct contact between the image forming substance on the image holding member and the peeling member, thereby reducing the image forming substance removing performance.

Further, according to the experiment of the present inventor, the adhesion of the paper dust and the brush breaking component to the surface of the peeling member is particularly caused by the image formation from the image carrier proposed in Japanese Patent Application No. 4-255916. It has also been found that there is a high likelihood of deteriorating the imaging substance removal performance of the apparatus performing the substance removal method. That is, in such an apparatus, since the peeling member comes into contact with the image carrier holding the water or the aqueous solution, the water or the aqueous solution also adheres to the surface of the peeling member. When the peeling member is used repeatedly, water or an aqueous solution from the image carrier forms a thin film on the surface of the peeling member. For this reason, the image forming substance on the image carrier and the surface of the peeling member come into contact with each other via a thin film of water or an aqueous solution on the surface of the peeling member, and the adhesion between the two is insufficient, and the performance of removing the image forming substance is deteriorated. I was letting it.

Here, according to the study of the present inventors, the paper dust and the brush breaking components (for example, zinc and copper) adhering to the surface of the peeling member increase the hydrophilicity of the surface, and the water and the water are removed. It was also found that the formation of a thin film of the aqueous solution was promoted. For example, it has been found that when the contact angle of the surface with water is 50 ° or less, a thin film of water is formed on the surface of the peeling member to such an extent that the adhesion to the image forming substance is insufficient.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an image forming material adhering to the surface of an image carrier, which is used for the surface and the image forming material. After the peeling member having an adhesive force greater than that of the image forming substance is brought into contact with at least the image forming substance on the surface on the surface side where the image forming substance is adhered, the image carrier and the peeling member are separated. An image-forming substance removing apparatus for removing an image-forming substance from an image holding member, the apparatus comprising: a peeling means for peeling off the image-forming substance from the surface; It is an object of the present invention to provide an apparatus for removing an image forming substance from an image carrier.

[0011]

In order to achieve the above object, the present invention is directed to an image forming apparatus, comprising: After the peeling member having an adhesive force greater than the adhesive force is brought into contact with at least the image forming substance on the surface on the surface side where the image forming substance is adhered, the image holding member and the peeling member are separated. An image forming substance removing apparatus for removing an image forming substance from the surface of the image holding member, the apparatus comprising: a removing unit configured to remove the image forming substance from the surface by using the removing unit. And wiping means for wiping off the residue on the surface after the substance has been removed.

According to a second aspect of the present invention, in the apparatus for removing an image-forming substance from the image-holding body according to the first aspect, an aqueous solution containing water, a surfactant, A liquid supply means for supplying at least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing a water-soluble polymer, and an aqueous solution containing a surfactant and a water-soluble polymer. .

According to a third aspect of the present invention, there is provided an image holding member having an image forming substance adhered to the surface thereof, wherein water, an aqueous solution containing a surfactant,
An aqueous solution containing a water-soluble polymer, and a liquid supply means for supplying at least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing a surfactant and a water-soluble polymer,
For the image forming substance adhered to the surface of the image holding member, a peeling member having an adhesive force larger than the adhesive force between the surface and the image forming substance, on the surface side where the image forming substance is adhered, Image formation from an image carrier having a peeling means for separating the image carrier and the peeling member and peeling the image forming material from the surface at least after contacting the image carrier with the image forming material on the surface In the substance removing apparatus, an oil applying means for applying oil to the surface of the peeling member is provided.

According to a fourth aspect of the present invention, there is provided an image holding member having an image forming substance adhered to a surface thereof, wherein water, an aqueous solution containing a surfactant,
A treatment liquid supply means for supplying at least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing a water-soluble polymer and an aqueous solution containing a surfactant and a water-soluble polymer; A peeling member having an adhesive force greater than the adhesive force between the surface and the image forming substance with respect to the image forming substance is attached to at least the image forming substance on the surface on the surface side where the image forming substance is adhered. And an exfoliating means for separating the image holding member and the peeling member from each other to separate the image forming material from the surface after contacting the image forming member with the image holding member. Is characterized in that at least the surface is made of a water-repellent material.

[0015]

According to the first to fourth aspects of the present invention, the peeling means gives the image forming substance adhered to the surface of the image carrier an adhesive force larger than the adhesive force between the surface and the image forming substance. After the peeling member having the image forming substance is brought into contact with at least the image forming substance on the surface on the surface side on which the image forming substance is adhered, the image carrier and the peeling member are separated from each other, and the image forming is performed from the surface. The material is stripped to remove the imaging material from the image carrier. In particular, in the invention according to claims 3 and 4 , water, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and an Supplying at least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing an activator and a water-soluble polymer, and stabilizing the adhesion between the image-forming substance and the surface of the image-holding member; Is peeled off.

In the first and second aspects of the invention, after the image forming substance is removed from the surface of the peeling member by the removing means, the residue on the surface is wiped and removed by the wiping means. This maintains a state in which the image forming substance on the image holding member can come into direct contact with the surface of the peeling member.

In particular, in the invention according to the second aspect, the residue which may increase the hydrophilicity of the surface of the peeling member is wiped off and removed, so that the residue is supplied from the liquid supply means and peeled off via the image holding member. A thin film of liquid adhering to the surface of the member is prevented from being formed on the surface. This makes it possible to maintain good adhesion between the image forming substance on the image carrier and the surface of the peeling member .

According to the third aspect of the present invention, by applying oil to the surface of the peeling member by the oil applying means, the liquid supplied from the liquid supply means and adhered to the surface of the peeling member via the image holding member. Is difficult to form on the surface. This makes it possible to maintain good adhesion between the image forming substance on the image carrier and the surface of the peeling member.

Further, in the invention according to claim 4 , since at least the surface of the peeling member is made of a water-repellent material, the liquid supplied from the liquid supply means and adhered to the surface of the peeling member via the image holding member is formed. A thin film is difficult to form on the surface. This makes it possible to maintain good adhesion between the image forming substance on the image carrier and the surface of the peeling member.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention is applied to an image holding apparatus for removing a heat-fusible toner (hereinafter, referred to as a toner) as an image forming substance from a transfer paper as an image holding body on which an image is formed by a transfer type electrophotographic copying machine. An embodiment applied to an apparatus for removing an image forming substance from a body (hereinafter, referred to as a toner removing apparatus) will be described.

First, the outline of the toner removing apparatus according to the embodiment will be described. In FIG. 1, the toner removing device includes a sheet feeding unit 20 that separates and feeds, one by one, transfer sheets 10 on which toner images are formed, which are stored in a stacked state, and a transfer unit that is fed from the sheet feeding unit 20. A liquid supply unit 30 for supplying a liquid to the paper 10 and a transfer paper 10 to which the liquid is supplied
A toner removing unit 40 for removing toner from the toner, a drying unit 60 for drying the transfer paper 10 from which the toner has been removed, and a paper receiving unit 70 for receiving the transfer paper 10 discharged from the drying unit 60. ing.

The paper feed unit 20 feeds the transfer paper 10 stacked on the paper feed table 21 from the lowermost position with the surface on which the toner image is formed (hereinafter referred to as the toner image surface) facing downward. The paper is fed by the rollers 22, the multi-fed paper is separated by the separation roller pair 23, and only one transfer paper 10 is sent out by the paper feed conveyance roller pair 24. Since the specific configuration and operation are the same as those of the paper feeding mechanism in the electrophotographic copying machine, detailed description is omitted.

The liquid supply unit 30 supplies the transfer paper 10 with a liquid 31 such as water or an aqueous solution containing a surfactant in order to improve the permeability to the transfer paper 10 and stores the liquid. A liquid container 32, an application roller 33 that is provided so as to be partially submerged in the liquid in the liquid container 32, draws the liquid by rotation, and supplies the liquid to the toner image surface of the transfer paper 10, and sandwiches the paper transport path. A regulating roller 3 as a paper regulating member provided to face the application roller 33
4 is provided.

The liquid supply unit 30 has a first paper guide for guiding the transfer paper 10 sent from the paper supply unit 20 to a portion (hereinafter, referred to as a liquid supply portion) opposite to the application roller 33 and the regulating roller 34. A mechanism 35 for guiding the transfer paper 10 passing through the liquid supply unit to the toner peeling unit 40 side;
And a paper guide mechanism 36.

The toner peeling unit 40 includes a plurality of belt support rollers (hereinafter, referred to as support rollers) 41 and 4.
A toner offset belt (hereinafter, referred to as an offset belt) 44 as a belt-shaped peeling member wound around the belts 2 and 43, and built-in heating lamps 45 a and 46 a provided so as to press against each other with the offset belt 44 interposed therebetween. Upper and lower heating rollers 45 and 46 and offset belt 44
Belt cleaning device 47 for removing toner from the surface
And At least the surface of the offset belt 44 is formed of a material having an adhesive force to the softened toner that is greater than the adhesive force between the surface of the transfer paper 10 and the toner. For example, the belt itself is aluminum, copper,
It is formed of a metal material such as nickel or a polymer material such as polyethylene terephthalate (PET) in which titanium oxide is dispersed.

Of the support rollers for supporting the offset belt 44, a belt is wound around a support roller (hereinafter, referred to as a separation roller) 43 around which the belt portion after passing through the pressurizing portions of the upper and lower heating rollers 45 and 46 is wound. The transfer direction of the transfer paper 1 from the offset belt 44 is
A curvature separation of 0 is performed. Further, a support roller 42 around which a belt portion entering the pressurizing section is wound.
Is a crown roller to prevent belt deviation. There is also provided a tension roller 49 for pushing the belt portion between the support roller 42 and the support roller 41 facing the belt cleaning unit inward.

The upper and lower heating rollers 45 and 46 are
The toner image surface of the transfer paper 10 is brought into close contact with the offset belt 44, and the toner adhered to the transfer paper 10 is heated and softened.

The belt cleaning device 47
Is a rotary brush roller 50 that applies an intermittent scratching force to the peripheral surface of the offset belt 44 to remove adhered toner.
The toner, paper powder, brush components of the brush roller 50, and the like adhering to the belt peripheral surface are scraped by frictional force due to frictional force in contact with the belt peripheral surface downstream of the rotating brush roller 50 in the belt moving direction. A pad 51 for removing the toner is provided, and the toner removed from the peripheral surface of the belt by these components is accommodated in the unit casing 52.

The toner peeling unit 40 includes:
The transfer paper 10 sent from the liquid supply unit 30 side is
A relay transport roller pair 53 is provided as a nipping transport means for entering the pressurizing section. An upper and lower guide member 54 is also provided for guiding the transfer paper 10 that has passed through the pressurizing unit and has been separated in curvature from the offset belt 44 by the separation roller unit to the drying unit 60 side.

The drying unit 60 includes, for example, the transfer paper 1
The transfer paper 10 is dried so that the liquid holding amount of 0 is 10% or less of the paper weight. The transfer paper 10 is wound around a heating drum 61 made of, for example, aluminum with a built-in heating lamp 61a and a plurality of support rollers 62. A paper pressing belt 63 that moves endlessly while being wound around the peripheral surface of the heating drum 61 at a fixed angle.
It is composed of In the illustrated example, one support roller 62 also serves as a tension roller. As the material of the paper pressing belt 63, a material having heat resistance and air permeability, for example, cloth such as canvas, cotton, and tetron can be used.

The drying unit 60 has an upper and lower guide member 64 for guiding the transfer paper 10 which has exited the holding area between the heating drum and the paper pressing belt, and a paper receiver for receiving the transfer paper 10 guided thereby. A paper discharge roller pair 65 for discharging paper on the paper receiving surface of the unit 70 is provided.

In the above configuration, the transfer paper 10 sent from the paper supply unit 20 is supplied with the liquid uniformly on the toner image surface by the liquid supply unit 30, and
Sent to 0. In the toner peeling unit 40, the toner fixed to the transfer paper 10 is softened by heating from the heating rollers 45 and 46, and adheres to the surface of the offset belt 44. When the transfer paper 10 is separated from the offset belt 44 around the separation roller 43, the offset belt 4
4 The toner adhered to the surface is peeled off from the transfer paper 10, whereby the toner is removed from the transfer paper 10. The transfer paper 10 from which the toner has been removed is dried in the drying unit 61,
The paper is discharged to the paper receiving unit 70.

According to the above configuration, the liquid is supplied to the transfer paper 10 to which the toner has adhered, and the toner is peeled off in a state where the liquid permeates the interface of the transfer paper 10 with the toner, thereby damaging the paper fibers. Without removing the toner. Further, since the surface of the offset belt 44 from which the toner has been removed by the rotating brush roller 50 is further rubbed with the pad 51, not only the remaining toner but also paper powder, the brush component of the brush roller 50 (brass is used for the brush). Copper and zinc when used) can be wiped off. Therefore, the surface state of the offset belt 44 is maintained in the initial state even by repeated use, and good peeling performance can be maintained. (Hereinafter, margin)

Next, referring to FIGS. 2A and 2B, even if the offset belt 44 as the peeling member is repeatedly used, the initial toner peeling performance can be maintained. A modified example of the wiping unit arranged on the downstream side in the belt moving direction will be described.

The wiping means shown in FIG.
The cotton blade 81 has a cotton wiping portion 81b made of cotton fixed to the tip end of a. This cotton blade 8
In 1, since the cotton wiping portion 81 b at the tip is made of water-absorbing cotton, moisture adhering to the surface of the offset belt 44 is absorbed by the cotton wiping portion 81 b,
Adhesion with the surface of the offset belt 44 is increased, and paper dust, brush components of the rotating brush roller 50, etc.
) Can be satisfactorily wiped off.

Here, in the illustrated example, the rotating brush roller 5
Although a blade 80 for removing toner made of metal or resin is also provided immediately after 0, a blade having such a relatively rigid and narrow contact width with the offset belt 44 (width of the contact portion in the belt moving direction) is used. , Even though the toner can be removed,
Paper dust and brush components of the rotating brush roller 50 could not be removed. Conversely, when the rotating brush roller 50 and the toner removing blade 80 were removed and only the cotton blade 81 was provided, the toner could not be removed. That is, a member that scrapes off with a relatively rigid member such as a rotary brush roller 50 suitable for removing toner, and a relatively elastic and wide contact width with the belt surface such as the cotton blade 81 can be obtained. By using a wiping member capable of wiping in a tight airtight manner, and by arranging the wiping member on the downstream side in the belt moving direction with respect to the toner removing member such as the rotary brush roller 50, the belt surface is in an initial state. It was found that it could be maintained. It was also found that the contact width for wiping is preferably at least 0.1 mm or more. Also,
Some water adhering to the belt surface as described above,
In the case where the contact with the belt 44 is increased by water absorption like the cotton blade 81, it contributes to the wiping performance. what if,
If the moisture on the belt surface is insufficient from the viewpoint of improving the wiping performance, a means for supplying water to the cotton wiping unit 81b may be separately provided.

The wiping means shown in FIG.
The rubber blade 82 has three rubber plates 82b, 82b, and 82b fixed to the tip of a. Also in this rubber blade 82, due to the elasticity of the rubber plate 82b at the tip end, the rubber blade 82 comes into close contact with the surface of the offset belt 44 with a width of 0.1 mm or more like a wiper for wiping a window glass of an automobile. It is possible to satisfactorily wipe off 50 brush components and the like. Note that the cotton blade 81 may be divided into a plurality of tips and wiped plural times similarly to the rubber blade 82.
Further, a plurality of blades having a single belt contact portion may be provided.

Next, with reference to FIG. 3, an embodiment in which at least the formation of a thin water film on the surface of the offset belt 44 is prevented to maintain the peeling performance will be described. FIG.
In this embodiment, an oil applicator 83 for applying oil to the belt surface is provided downstream of the rotating brush roller 50 and the blade 80 for removing toner in the belt moving direction. The oil applicator 83 in the illustrated example has a container 83a containing a vegetable oil 83b and one end submerged in the oil 83b in the container 83a and the other end contacting the belt surface by a support member (not shown). Felt 83c supported to
It is composed of This prevents the formation of a water thin film by applying oil to the belt surface and making it difficult for moisture to transfer to the belt surface even when it comes into contact with wet transfer paper. In the illustrated example, since the felt 83a is brought into contact with the belt surface with a width of, for example, 0.1 mm or more, it substantially functions as a wiping unit. This makes it possible to satisfactorily wipe off paper dust, brush components of the rotary brush roller 50, and the like (the substance indicated by the symbol A in the figure).

Instead of providing the oil applicator 83 as described above, the surface of the offset belt 44 itself may be made of a hydrophobic material to prevent the formation of a water thin film.
Such materials include ETFE (ethylene tetrafluoride-
Ethylene copolymer), PTFE (ethylene tetrafluoride resin), FEP (tetrafluoroethylene-hexafluoropropylene copolymer), PFA (ethylene tetrafluoride-perfluorovinyl ether copolymer), silicon resin, etc. Can be used. These have 96 ° ETFE and 110 PTFE.
°, FEP is 114 °, PFA is 115 °, and the silicone resin has a contact angle of water of 100 °, each of which is a contact angle of 50 ° which produces a water thin film which deteriorates the toner removing performance.
And the formation of a water thin film can be sufficiently prevented.

In each of the above embodiments, the present invention is applied to a transfer paper 10 on which an image is formed by a transfer type electrophotographic copying machine.
However, the present invention can also be applied to an image carrier such as a recording paper used in another image forming apparatus such as a paper such as a facsimile, a printer, and a printing machine. Further, the present invention is not limited to an image carrier having a fibrous structure, but can be applied to other image carriers capable of forming an image. The image carrier to which the present invention can be applied may be, for example, a laminate in which the surface layer of a base sheet such as a plastic layer is a material layer having liquid absorbing properties and elasticity such as paper.

[0041]

According to the first and second aspects of the present invention, after removing the image forming substance from the surface of the peeling member, the residue on the surface is wiped off to thereby remove the image forming substance on the image holding member. Since the state in which the substance and the surface of the peeling member can be directly contacted is maintained, there is an effect that good image forming substance removing performance can be maintained.

In particular, according to the second aspect of the present invention, since the water or the aqueous solution is supplied and the image forming substance is peeled off in a state where the adhesion between the image forming substance and the surface of the image carrier is made unstable, the image is formed. The forming substance can be removed satisfactorily, and the image forming substance can be removed without damaging the fibers even when a fibrous surface such as paper is used as the image carrier. In addition, the above-mentioned residue that may increase the hydrophilicity of the surface of the peeling member is wiped off to prevent a liquid thin film from being formed on the surface of the peeling member. Good adhesion to the member surface can be maintained .

According to the third or fourth aspect of the present invention, similarly to the second aspect of the present invention, by supplying water or an aqueous solution, the image forming substance can be satisfactorily removed, and the Even when a fibrous surface such as paper is used, the image forming substance can be removed without damaging the fibers.

According to the third aspect of the present invention, the oil is applied to the surface of the peeling member so that a thin film of the liquid is hardly formed on the surface of the peeling member. Since good adhesion to the surface of the peeling member is maintained, there is an effect that good image forming substance removing performance can be maintained.

According to the fourth aspect of the present invention, at least the surface of the peeling member is made of a water-repellent material.
Since the thin film of the liquid is hardly formed on the surface of the peeling member, the adhesion between the image forming substance on the image holding member and the surface of the peeling member is maintained well, so that good image forming substance removal performance is maintained. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a toner removing device according to an embodiment.

FIGS. 2A and 2B are explanatory views of a modification of a wiping unit.

FIG. 3 is an explanatory view of an embodiment provided with an oil applicator.

DESCRIPTION OF SYMBOLS 10 Transfer paper 40 Toner peeling unit 43 Separation roller 44 Offset belt 45 Upper heating roller 46 Lower heating roller 50 Rotating brush roller 51 Pad 55, 56 Supporting roller 57 Belt cleaning device 80 Toner removal blade 81 Cotton blade 82 Rubber Blade 83 oil applicator

Continued on the front page (72) Inventor Iwao Takahashi 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Masatoshi Saito 1-3-6 Nakamagome, Ota-ku, Tokyo Co., Ltd. Inside Ricoh (72) Inventor Shigeru Fujita 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Toshio Watanabe 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Terutaro 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (56) References JP-A-7-84488 (JP, A) JP-A-7-121071 (JP, A) JP-A-2-111987 (JP, A) JP-A-7-129046 (JP, A) JP-A-4-234056 (JP, A) JP-A-2-117547 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) G03G 21/00 570-578

Claims (4)

(57) [Claims] An image forming substance adheres to a peeling member having an adhesive force greater than the adhesive force between the image forming substance and the surface of the image holding member. An image carrier having a peeling means for separating the image carrier from the peeling member and peeling the image forming material from the surface after at least contacting the image carrier on the surface with the image forming material on the surface; A removing means for removing the image forming substance from the surface of the peeling member; and a wiping means for wiping a residue on the surface after the removing of the image forming substance by the removing means. An apparatus for removing an image forming substance from an image carrier. 2. An image carrier having an image forming substance adhered to a surface thereof comprises water, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and an aqueous solution containing a surfactant and a water-soluble polymer. 2. The apparatus according to claim 1, further comprising a liquid supply unit for supplying at least one kind of water or an aqueous solution selected from the group. 3. An image carrier having an image-forming substance adhered to a surface thereof comprises water, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and an aqueous solution containing a surfactant and a water-soluble polymer. A liquid supply means for supplying at least one kind of water or an aqueous solution selected from the group; and an image forming substance adhering to the surface of the image holding member, which has a greater adhesive force between the surface and the image forming substance. After the peeling member having an adhesive force is brought into contact with the image forming substance on the surface at least on the surface side on which the image forming substance is adhered, the image carrier and the peeling member are separated from the surface. An image forming substance removing device for removing an image forming substance from an image holding member, comprising: an oil applying means for applying oil to the surface of the separating member. Image forming substance removal device. 4. An image carrier having an image-forming substance adhered to a surface thereof comprises water, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and an aqueous solution containing a surfactant and a water-soluble polymer. A treatment liquid supply means for supplying at least one kind of water or an aqueous solution selected from the group, and an image-forming substance adhering to the surface of the image carrier, wherein the adhesion between the surface and the image-forming substance is determined. A peeling member with a large adhesive force,
At least on the surface to which the image-forming substance adheres, after at least contacting the image-forming substance on the surface, the image-holding member and the peeling member are separated to peel off the image-forming substance from the surface. An apparatus for removing an image-forming substance from an image carrier, comprising: means for removing at least a surface of the peeling member from a water-repellent material.