JP2879309B2 - Method and 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 forming apparatus for removing an image forming substance from the surface of an image carrier on which an image formed of the image forming substance has been formed by an image forming apparatus such as a copying machine, a facsimile, a printer or a printing machine. More specifically, the present invention relates to an image forming apparatus, wherein an image is formed by an image forming apparatus.
While heating the image forming substance on the discharged image carrier from the apparatus so as to melt or soften, image holding member surface for the said imaging material and the adhesive force greater than the adhesive force between said image forming substance Belt-shaped peeling member made of a material having
The Rukoto brought into contact with said image forming substance, 該剥release member and said
After adhering the image forming substance , the separating member and the image carrier are separated from each other, and the image forming substance is peeled off from the image carrier and removed during the separation. The present invention relates to a method and an apparatus for removing a substance.

[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. Toner, the ink peeled body is overlaid on the printed body and passed between the heating roller and the pressure roller,
There is disclosed an image forming substance removing method in which the ink peeling member is peeled off after cooling and adhered to the ink peeling member to be removed. 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, JP-A-4-8298
In JP-A No. 3 (1999) -1995, two rollers provided in parallel to rotate in contact with each other and pass the paper through the press-contact portion, a heater for heating at least one of the two rollers, and a roller passing through the press-contact portion were used. There is disclosed an image forming substance removing apparatus including a scraper for separating paper from the roller and a peeling device for removing the image forming substance attached to the roller from the roller.

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 ink exfoliated body, the endless sheet or the roller in order to enhance the removability of the image forming substance, depending on various conditions, conversely, the fixing between the image forming substance and the image carrier may be performed. In some cases, the removal properties were increased, making removal difficult.

Accordingly, the applicant of the present invention has previously reported that a recorded image carrier contains water as a destabilizer, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and a surfactant and a water-soluble polymer. Holding at least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing, and heating to melt or soften the image forming substance on the image holding member;
The image forming substance is brought into contact with a peeling member having an adhesive force larger than the adhesive force between the image holding body and the image forming substance, and the image forming substance is separated when the peeling member and the image holding body are separated. There has been proposed an image forming substance removing method for peeling and removing the image forming material from the image carrier (see, for example, Japanese Patent Application No. 4-255916). According to this image forming substance removing method, only the image forming substance can be removed without relatively damaging the paper quality of the image holding member. FIG. 13 shows a configuration example of a toner removing unit of a toner removing device that can realize this method. A toner peeling unit that peels off the toner that is the image forming substance from the transfer paper 10 that is the image holding body includes a toner offset as a belt-like peeling member that is wrapped around a plurality of support rollers 41 and 42 and a separation roller 43. Belt 44 and urging means 45b such as a spring
Heating lamp 4 provided so as to press against each other
Upper and lower heating rollers 45 and 46 with built-in 5a and 46a, tension roller 49 urged by urging means 49a such as a spring so as to push the belt portion between support rollers 41 and 42 inward, and the surface of belt 44 A rotary brush roller 50 for removing toner. This belt 44
Is formed of a material having an adhesive force to the softened or melted toner that is larger than the adhesive force between the surface of the transfer paper 10 and the toner. In this toner removing device, the moving direction of the belt 44 is rapidly changed around the 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 transferred. The curvature separation of the paper 10 is performed, and at the time of this separation, the toner is separated and removed from the surface of the transfer paper 10.

[0006]

However, in the apparatus for removing an image-forming substance from an image carrier proposed in Japanese Patent Application No. 4-255916, the softened or fused image-forming substance on the image carrier is removed. After contacting the peeling member,
In some cases, the image forming substance is cooled and solidified before the image carrier is separated from the surface of the peeling member. For example, in the toner removing device having the configuration shown in FIG. 13, the toner on the transfer paper 10 that has been softened or melted by being heated by the upper and lower heating rollers 45 and 46 is separated from the separation roller 43.
The transfer paper 10 may be cooled and solidified before reaching the separation position of the transfer paper 10. When the image forming substance such as toner is cooled and solidified in this way, the adhesive force between the image forming substance and the image holding member is often not smaller than the adhesive force between the image forming substance and the surface of the peeling member. However, even if the image carrier and the peeling member are separated in this state, the image forming substance cannot be surely peeled off from the image carrier and removed. Incidentally, such a problem that the peeling of the image forming substance from the image holding member becomes insufficient is accompanied by the case where the destabilizing agent is not added.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to improve the performance of an image carrier capable of separating an image forming substance from an image carrier by a peeling member. It is an object of the present invention to provide a method and an apparatus for removing an imaging substance.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, an image is formed by an image forming apparatus.
Formed heated Then together so as to melt or soften the image forming substance on the discharged image carrier from the image forming apparatus
The surface is made of a material having adhesion greater adhesion to the image holding member and said image forming material for the said imaging material
The belt-type peeling member in Rukoto into contact with said image forming substance
After the peeling member and the image forming substance are bonded to each other, the peeling member and the image carrier are separated from each other, and the image forming substance is peeled off from the image carrier during the separation. In the method for removing an image forming substance from an image carrier, the image forming substance is melted or removed until the image carrier is separated from the release member.
The image carrier is maintained in a softened state , and the image carrier is separated from the peeling member before the image forming substance is cooled and solidified.

According to a second aspect of the present invention, an image forming apparatus is provided.
Therefore, an image is formed, and the image forming substance on the image carrier discharged from the image forming apparatus is heated so as to melt or soften.
As well as, wood the surface has adhesion greater adhesion to the image holding member and said image forming material for the said imaging material
The Rukoto belt-shaped separating member brought <br/> of contact with said image forming material comprising fees, of bonding the該剥release member and said image forming substance
After allowed to separate and該剥release member and the image holding body, this amount
In an apparatus for removing an image forming substance from an image carrier, which peels off the image forming substance from the image carrier at the time of separation, the image forming substance is dissolved until the image carrier is separated from the peeling member.
A means for maintaining a molten state or a softened state is provided.

In the first or second aspect of the present invention, before the image forming substance on the image carrier is brought into contact with the release member, water as an instability agent, an aqueous solution containing a surfactant, At least one water or 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 may be applied to the image carrier.

According to a third aspect of the present invention, an image forming apparatus is provided.
Therefore, an image is formed, and the image forming substance on the image carrier discharged from the image forming apparatus is heated so as to melt or soften.
As well as, wood the surface has adhesion greater adhesion to the image holding member and said image forming material for the said imaging material
The Rukoto belt-shaped separating member brought <br/> of contact with said image forming material comprising fees, of bonding the該剥release member and said image forming substance
After allowed to separate and該剥release member and the image holding body, this amount
In the image forming substance removing apparatus from the image carrier is removed by peeling from the image holding member to said image forming substance during the release includes a separation member driving means for moving the該剥release member, the heating means in the interior and it was clamped and heated supporting member which supports by sliding the release member to the mobile on the surface, to the surface of the heating support member, the image holding member to contact the peeling member and該剥release member on said surface A pressure contact member that presses the image holding member downstream of the heating support member in the moving direction of the peeling member, and separates the image holding member from the surface of the peeling member at a position where the image forming substance does not cool and solidify. A curvature separating portion for guiding the moving direction of the peeling member is formed so as to cause the peeling member to move.

According to a fourth aspect of the present invention, in the apparatus for removing an image forming substance from an image carrier according to the third aspect, a flat portion is formed on a surface of the heating support member which is pressed against the elastic roller used as the pressing member. The length of the flat surface in the moving direction of the peeling member is made equal to the length of the pressing portion between the elastic roller and the heating support member in the moving direction, and the length of the pressure contact portion on the upstream side in the moving direction of the peeling member is adjusted. A slope is formed on the surface of the heating support member so as to descend from the end of the pressure contact portion toward the upstream side, and the peeling member slides on the flat surface and the slope of the surface of the heating support member. It is characterized by being moved.

According to a fifth aspect of the present invention, in the apparatus for removing an image forming substance from an image holding member according to the third aspect, the heating support member is formed of a high thermal conductor, and the heating support member is connected to a heat insulator. And a holding tool for holding by holding.

According to a sixth aspect of the present invention, in the apparatus for removing an image forming substance from the image carrier according to the third aspect, a temperature detecting means for detecting the temperature of the surface of the peeling member immediately after the image carrier is separated. It is characterized by having been provided.

According to a seventh aspect of the present invention, an image forming apparatus is provided.
Therefore, an image is formed and the image is discharged from the image forming apparatus.
Heat to melt or soften the imaging substance on the support
The surface of the image carrier with respect to the image forming substance.
Having an adhesive force greater than the adhesive force between the material and the image forming substance
A belt-like release member made of a material is brought into contact with the image forming substance.
Thereby bonding the release member and the image forming substance.
After that, the peeling member and the image holding member are separated from each other.
Upon separation, the image forming substance is peeled off from the image carrier and removed.
In an apparatus for removing an image forming substance from an image carrier,
Providing a peeling member driving means for moving the member;
The imaging substance in contact with Or softened
The image carrier is peeled off at a position where it is maintained and does not cool and solidify.
How to move the peeling member so as to separate the curvature from the member surface
Characterized by having a curvature separating section for guiding the direction
It is.

[0016]

According to the first or second aspect of the present invention, the heating of the image forming material is maintained until the image holding member is separated from the peeling member, and the image holding material is removed from the peeling member before the image forming material is cooled and solidified. by separating the body, at the time of the separation, to maintain said imaging material softened or molten state, the adhesion to the image holding member of said image forming substance, said of said imaging material
It becomes possible to significantly reduce the adhesive force to the peeling member .

According to the third aspect of the present invention, the belt-shaped peeling member moved by the peeling member driving means slides on the surface of the heating support member having the heating means therein, and when the sliding is performed, Is heated by heat conduction from the heating support member. Then, since the image forming substance on the image carrier comes into contact with the surface of the peeling member, the image forming substance is softened or melted. Then, the peeling member and the image holding member on the surface of the heating support member are sandwiched and pressed by the pressing member. Then, the curvature of the image carrier is separated from the surface of the peeling member by a curvature separating section provided on the downstream side of the heating support member in the moving direction of the peeling member. The imaging substance peels off and is removed. Here, since the curvature separating section is provided at a position where the image forming substance does not cool and solidify, the curvature separating section maintains the image forming substance in a softened or molten state when separating the image holding member from the peeling member. the adhesion to the image holding member of said image forming substance, it is possible to reduce considerably in comparison with the adhesion to the release member of said image forming substance.

In order to surely perform the curvature separation, the curvature of the curvature separation portion is preferably R4 mm or less.

According to a fourth aspect of the present invention, a flat portion is formed on the surface of the heating support member which is in pressure contact with the elastic roller used as the pressure contact member, so that the pressure contact portion of the elastic roller is formed on the image holding member. It can be provided on the same plane as the transport path. Further, by making the length of the flat surface in the moving direction of the peeling member equal to the length of the press contact portion between the elastic roller and the heating support member in the moving direction, the curvature of the end portion of the press contact portion is obtained. it is possible to provide a separating unit, image holding member is separated from該剥release member surface at a higher temperature range, the adhesion to the image holding member of said image forming substance, with respect to the release member of said image forming substance It becomes possible to further remarkably reduce the force as compared with the contact force. Also,
A slope is formed on the surface of the heating support member such that a slope descending from the end of the pressure contact portion on the upstream side in the moving direction of the peeling member toward the upstream is formed on the surface of the heating support member. When the liquid is applied to the image holding member by sliding the peeling member to the sloping portion and moving the slidable member, the liquid that easily collects at the entrance of the pressure contact portion is sequentially discharged along the surface of the sloping portion. Will be able to

According to the fifth aspect of the present invention, since the heating support member is made of a high thermal conductor, the time required to raise the temperature of the heating support member to a predetermined temperature is shortened, so that the warm-up time is shortened. The responsiveness of the temperature adjustment of the heating support member is improved. Further, by providing a holder for holding the heating support member via a heat insulator, heat loss due to heat transfer from the heating support member can be reduced.

According to a sixth aspect of the present invention, there is provided a temperature detecting means for detecting the temperature of the surface of the peeling member immediately after the image carrier is separated, so that the temperature change of the peeling member in the vicinity of the curvature separating position can be prevented. The temperature can be directly and instantaneously detected, and the temperature detection result can be used for controlling the temperature of the peeling member in the vicinity of the curvature separation position by the heating support member. Here, the temperature detecting means may be provided at a central portion in a width direction orthogonal to a moving direction of the peeling member.
Accordingly, when the image carrier is always positioned at the center in the width direction of the peeling member and is conveyed, even if the width of the image carrier fluctuates, the image carrier corresponds to the central portion in the width direction of the image carrier. The temperature of the peeling member can be detected.

In the invention according to claim 7, the curvature separation is performed.
In the section, the belt moved by the peeling member driving means
The image carrier is separated from the peeling member in the form of curvature by a curvature.
In this case, the image forming substance is peeled off from the image carrier and removed.
It is. Here, the curvature separating portion is provided so that the image forming substance is cooled and solidified.
The image carrier is provided at a position where
Upon separation from the member, the imaging substance is softened or
Is maintained in a molten state, and the image forming substance is
Adhesive force of the image forming substance to the peeling member.
Can be significantly reduced.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention is applied to a toner for removing a heat-fusible toner (hereinafter, referred to as a toner) as an image forming substance from a transfer paper as an image carrier on which an image is formed by a transfer type electrophotographic copying machine. An embodiment applied to a removing device will be described. FIG. 1 is a front view illustrating a schematic configuration of a toner removing unit of the toner removing device according to the present embodiment. The toner peeling unit includes a plurality of support rollers 41, 42,
And a toner offset belt (hereinafter, referred to as an offset belt) 44 as a belt-like peeling member wound around a heating support member 2 having a built-in heater 1 as a heating means therein, and a spring sandwiching the offset belt 44. The pressing means 45b, etc., presses the heating roller 45 with the built-in heating lamp 45a provided so as to be pressed against the heating support member 2 and the belt portion between the support roller 41 and the heating support member 2 inward. Urging means 49 such as a spring
(a) and the rotating brush roller 5 for removing toner from the surface of the offset belt 44
0.

At least the surface of the offset belt 44 is provided on the transfer paper 1 against softened or melted toner.
It is made of a material having an adhesive force greater than the adhesive force between the surface of the toner and the toner. Here, the offset belt 4
4 is composed of a plurality of layers, at least one of which is a heat-resistant layer having excellent strength and heat resistance, and a layer in contact with the toner is an adhesive layer having excellent adhesion to the toner. Excellent in both sexes. As a material of the heat-resistant layer, a polyimide resin can be used. Examples of the material for the adhesive layer include polymers such as ethylene terephthalate, polyethylene terephthalate, polystyrene, acrylic resin, methacrylic resin, styrene-butylacrylic copolymer, styrene-butadiene copolymer, polyester, epoxy resin, and polyimide resin. Materials can be used.

As the driving means of the offset belt 44, a support roller 42 rotated by a driving motor (not shown) is used. The offset belt 44 is driven to move at substantially the same moving speed as the transfer speed of the transfer paper 10 via the frictional force with the rotating support roller 42.

FIG . 2A is an enlarged view of the heating roller 45 and the heating support member 2. The surface portion of the heating roller 45 is formed of an elastic layer 45 c, and the toner image surface of the transfer paper 10 to which the toner T is adhered is brought into close contact with the offset belt 44. The heating roller 45 heated by the heating lamp 45a heats and softens or melts the toner attached to the transfer paper 10 together with the heating support member 2 in which the heater 1 is built.

In this embodiment, the heating support member 2
A flat portion 2a is formed on the surface of the pressure contact portion with the heating roller 45. Thereby, the press contact portion is flush with the transfer path of the transfer sheet 10, and it is possible to reduce the occurrence of jams and wrinkles of the transfer sheet 10 in the transfer path. Further, a bent portion 2b of about 90 degrees is formed downstream of the pressure contact portion of the heating support member 2 in the transfer paper 10 transport direction, and the bent portion 2b is formed.
The offset belt 44 is slid along the surface. The transfer paper 10 is separated from the surface of the offset belt 44 as the offset belt 44 bends and moves at a sharp angle at the bent portion 2b. The bent portion 2b of the heating support member 2 may be formed at an acute angle so that the offset belt 44 bends at a sharp angle as shown in FIG. Thereby, the separability of the transfer paper 10 can be further improved. Further, as shown in FIG.
The curvature radius R at the bent portion 2b is preferably 4 mm or less. In this case, the transfer paper 10 can be more reliably separated from the surface of the offset belt 44, and the transfer failure of the transfer paper 10 (jam) can be reduced. Can be.

[0028] The planar portion 2a of the heating support member 2 is extended to the upstream side of the transfer sheet 10 conveying direction.
The preheating of the offset belt 44 is performed in the extended flat portion. By this preheating, the heating efficiency for softening or melting the toner in the press contact portion can be improved, and power saving can be achieved.

As the material of the heating support member 2, it is preferable to use a high thermal conductor, for example, a metal material such as aluminum or stainless steel. By using such a high thermal conductor, the time for raising the temperature of the heating support member 2 can be reduced, and the warm-up time can be reduced. Further, the responsiveness of the temperature adjustment of the heating support member 2 is improved, and the temperature of the surface of the heating support member 2 can be stabilized. The heating support member 2 is held by a holding member 4 via a heat insulator 3. With this heat insulator 3, heat transfer (radiation) loss from the heating support member 2 can be reduced, and the heating efficiency can be further improved. When radiant heat from an infrared lamp or the like is used as the heating means of the heating support member 2, a reflection layer (aluminum vapor deposition layer, aluminum plate, mirror, etc.) is provided between the heating support member 2 and the heat insulator 3. Is preferred. In this case, since the transfer of the radiant heat to the heat insulator 3 can be reduced and the radiant heat can be concentrated on the heating support member 2, the heat from the radiant light source such as the infrared lamp can be effectively used. Can be.

The surface of the heating support member 2 which is in contact with the offset belt 44 is preferably subjected to a low friction treatment. Examples of the low friction treatment include, but are not limited to, formation of a film of a fluorine-based resin layer, tufram treatment, and the like. Since the frictional resistance between the offset belt 44 and the surface of the heating support member 2 is reduced by such low friction processing, the driving force (torque) of the offset belt 44 is reduced, and the wear of the offset belt 44 is reduced. And a longer life can be achieved.

Further, the temperature sensor 5, such as a thermistor, as temperature detection means for detecting the temperature of the offset belt 44 surface of the bending portion 2b near the transfer sheet 10 conveying direction
Is installed. The bent portion 2b is detected by the temperature sensor 5.
The temperature of the offset belt 44 in the vicinity can be directly and instantaneously detected, and this detection signal is sent to a control unit (not shown).
The heating control of the heater 1 is performed so as to stabilize the temperature of 4. The mounting position of the temperature sensor 5 is set at the center of the offset belt 44.

In the toner removing device having the above structure, the transfer paper 10 fed from a paper supply unit (not shown)
By the transport roller 51 and a transport guide member (not shown),
The toner is conveyed such that the toner image surface to which the toner T adheres contacts the surface of the offset belt 44. And transfer paper 1
Reference numeral 0 denotes an offset belt 44 which is supported while being rubbed on the heating support member 2 and is heated, and a heating lamp 45
a, the toner T on the transfer paper 10 is softened or melted, and the toner is transferred to the offset belt 4.
4 Pressed against the surface. Then, before the toner T is cooled and solidified while being maintained in the softened or molten state, the transfer paper 1
0 reaches the bent portion 2b of the heating support member 2, and the transfer paper 10 is separated from the surface of the offset belt 44 at the bent portion 2b. During this separation, the toner T on the transfer paper 10 is separated from the surface of the transfer paper 10 while adhering to the surface of the offset belt 44. Transfer paper 10 from which toner has been removed
Is conveyed to a discharge unit (not shown) by the conveyance path rollers 51 and discharged.

As described above, according to this embodiment, the heating of the toner T is maintained until the transfer paper 10 is separated from the offset belt 44, and the transfer paper 10 is separated from the offset belt 44 before the toner T is cooled and solidified. Accordingly, at the time of the separation, the toner T can be maintained in a softened or molten state, and the adhesion of the toner T to the surface of the transfer paper 10 can be significantly reduced as compared with the adhesion of the toner T to the offset belt 44 . , Offset belt 4
4 can significantly improve the toner peeling performance. Further, unlike the related art, there is no need to separately provide a separation roller for separating the curvature.

In the toner removing apparatus of the above embodiment, a destabilizing liquid (hereinafter, referred to as a destabilizing liquid) for destabilizing the adhesive force between the toner and the transfer paper 10 before the peeling process by the toner peeling unit.
A liquid applying unit for applying the processing liquid to the transfer paper 10 may be provided. As the treatment liquid, at least one kind of water or an aqueous solution selected from the group consisting of 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 is used. be able to. After the toner is peeled off and removed from the transfer paper 10 to which the processing liquid has been applied, the transfer paper 10 may contain the processing liquid. Therefore, a drying unit for drying the transfer paper 10 may be provided as necessary. It may be provided. As described above, by applying the processing liquid to the transfer paper 10 before the toner peeling process, the toner peeling property can be further improved.

When the treatment liquid is applied to the transfer paper 10 as described above, as shown in FIG.
The liquid in the transfer paper 10 may be squeezed due to the pressure contact force on the downstream side of the pressure contact portion between the sheet and the heating support member 2, and a pool of the processing liquid 20 may be generated. When such a pool occurs,
The increase in the temperature of the offset belt 44 is hindered, and the thermal efficiency when heating the offset belt 44 deteriorates. As shown in FIG. 5A, the length of the flat portion 2a of the heating support member 2 in the transfer paper transport direction is reduced by preventing the generation of the liquid pool from occurring. The length of the nip portion, which is the pressure contact portion of the flat portion 2a, and the slope portion 2 descending further upstream from the upstream end of the flat portion 2a.
Preferably, c is provided. As a result, the processing liquid 20 squeezed from the transfer paper 10 at the pressure contact portion of the heating roller 45 as shown in FIG. 5B can be sequentially discharged along the slope 2 c of the heating support member 2.

Further, in order to prevent the liquid pool, the length of the flat portion 2a of the heating support member 2 is adjusted by the heating roller 45.
6, the flat portion 2a may be inclined from a horizontal position in a direction perpendicular to the transfer paper transport direction, as shown in FIG. In this case, the processing liquid 20 squeezed from the transfer paper 10 at the pressure contact portion of the heating roller 45 is naturally directed toward the lower slope (the left side in FIG. 6) due to the inclination of the flat portion 2a of the heating support member 2. Can be drained and discharged.

In the above embodiment, as shown in FIG. 7, the surface of the heating support member 2 on the downstream side of the bent portion 2b may not be in contact with the offset belt 44. As a result, the sliding area (area) between the offset belt 44 and the heating support member 2 is reduced and the frictional resistance can be reduced, so that the driving force (torque) of the offset belt 44 is reduced, and Wear can be reduced, and the life can be extended.

Further , in the above embodiment, as shown in FIG. 8, the surface of the pressure contact portion of the heating support member 2 is formed in an arc shape, and the radius of curvature of the arc is the same as the radius of curvature of the outer peripheral surface of the heating roller 45. You may comprise so that it may become. In the case of this configuration, the flat portion 2a of the heating support member 2 as shown in FIG.
Since the contact area (area) of the offset belt 4 with the heating support member 2 and the heating roller 45 is increased and heat supply to the transfer paper 10 is increased as compared with the case where the heating roller 45 is pressed against If the amount of heat to be softened or melted is constant, it is possible to reduce the output and temperature of the heater 1 and the heating lamp 45a, thereby reducing power consumption.

In the above embodiment, the surface of the heating support member 2 between the pressure contact portion with the heating roller 45 and the bent portion on the downstream side is formed so as to be uneven in a direction perpendicular to the transfer paper transport direction. Is also good. In the case of this configuration, when the transfer paper 10 moves along the uneven surface after passing through the pressure contact portion of the heating support member 2 with the heating roller 45, the transfer paper 10 is deformed in a wavy shape. At the interface (adhesion surface) with the transfer paper 10, a slight displacement occurs, and partial separation between the offset belt 44 and the transfer paper 10 occurs at the interface.
By performing partial separation in advance of the curvature separation at the bent portion as described above, the adhesive force between the offset belt 44 and the transfer paper 10, that is, the separation force of the transfer paper 10 can be suppressed to a small value. The separation performance by the curvature separation can be improved, and the conveyance of the transfer paper 10 at the separation position can be stabilized, and the occurrence of jam can be prevented. The irregularities on the surface of the heating support member 2 may be formed so as to be distributed in the transfer paper transport direction.

Further , as shown in FIG.
The movable member 6, which has an uneven portion 6a in a direction perpendicular to the transfer paper transport direction and is reciprocally driven in the direction of the arrow, is inserted on the surface between the press-contact portion with the heating roller 45 and the bent portion on the downstream side. May be provided. In the case of this configuration, the reciprocating movement of the movable member 6 can expand the partial separation area of the transfer paper 10, further improve the separability of the transfer paper 10, stabilize the transfer of the transfer paper 10, Further, occurrence of jam can be prevented.

Further , in the above embodiment, as shown in FIG. 10, the toner image surface of the transfer paper 10 is also formed on the surface of the offset belt 44 on the slope portion of the heating support member 2 at the upstream side of the pressure contact portion with the heating roller 45. You may comprise so that it may contact.
In the example shown in the figure, the backup roller 5 presses the transfer paper 10 against the surface of the offset belt 44 at the slope.
2 are provided. In the case of this configuration, the heating support member 2
The heating distance of the transfer paper 10 can be made longer than that in which the transfer paper 10 is brought into contact only with the surface of the offset belt 44 on the flat surface portion 2a. Heating efficiency is improved, and power saving can be achieved.

Further , in the above embodiment, as shown in FIG. 11, the inelastic heating roller 45 having no elastic layer 45c on the surface is used, and the heating roller 4 of the heating support member 2 is used.
Only the surface portion that is in pressure contact with 5 may be formed of elastic body 2d. According to this configuration, the area (volume) of the elastic body can be significantly reduced as compared with the case where the heating roller 45 having the elastic body layer 45c on the surface is used. The heat supply (transmission) to the power supply is improved, so that the thermal efficiency can be improved and power consumption can be reduced.
Furthermore, since only the elastic body 2d is provided only on the surface of the heating support member 2 which is in pressure contact with the heating roller 45, the production of parts is simplified and the cost can be reduced.

In the structure shown in FIG.
It is preferable that d is composed of a plurality of layers, a heat-resistant layer is used as at least one of the layers, and a release layer is used as a layer (surface layer) that contacts the offset belt 44. Silicon rubber or the like can be used as the material of the heat-resistant layer, and polytetrafluoroethylene or the like can be used as the material of the release layer. By using such a multilayer structure,
While ensuring the elasticity at the press contact portion, the offset belt 44
The sliding resistance between the elastic member 2d and the elastic member 2d can be reduced, and the heat resistance and durability of the elastic member 2d can be improved.

In the above-described embodiment, the endless offset belt 44 is used. However, in the case of such an endless belt, the accuracy of the rotating shaft components such as the heating roller 45 and the support rollers 41 and 42 and the mutual accuracy of each other are determined. Due to the positional accuracy such as the degree of parallelism, the offset belt 44 is likely to shift or wrinkle in the moving direction.

[0045] In order to avoid such a problem, as shown in FIG. 1
As shown in FIG. 2, an end-shaped offset belt 44 is used, and a supply roll 44a and a take-up roll 44b for the belt are provided.
It may be driven by a driving unit (not shown) so as to take up the paper roll and rewind it toward the supply roll 44a when the non-toner is removed. In the case of this configuration, after a predetermined amount has been wound on the winding roll 44b, the reverse rewinding operation is performed via the same member as at the time of winding, so that a slight deviation of the belt at the time of winding is corrected each time. Will be. Therefore, compared to an endless belt in which deviations are accumulated and wrinkles or the like are likely to occur, running stability is excellent, and stable running of the offset belt 44 can be realized for a long period of time.

When the offset belt 44 is rewound in the configuration shown in FIG. 12, it is preferable to control the urging means so as to release the pressing force of the heating roller 45. In this case, the pressing force applied to the offset belt 44 at the time of rewinding is removed, so that the driving force at the time of rewinding is reduced, and the offset belt 44 can be quickly rewound with a small driving force.

In the above embodiment, the present invention is applied to the transfer paper 10 on which an image is formed by a transfer type electrophotographic copying machine. However, the present invention is applicable to other image forming apparatuses such as a facsimile, a printer, and a printing machine. The present invention can also be applied to an image carrier such as a recording paper used. Further, the present invention is not limited to an image carrier having a fibrous structure, but can be applied to an image carrier 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 such as paper.

FIG . 14 shows an example of the configuration of a toner removing apparatus to which the present invention can be applied. The toner removing device includes a paper feed unit 100 that separates and feeds, one by one, transfer paper 10 on which a toner image stored in a stacked state is formed;
A liquid application unit 200 for supplying the processing liquid 20 to the transfer paper 10 sent from the paper supply unit 100, a toner peeling unit 300 for peeling and removing the toner from the transfer paper 10 to which the processing liquid 20 is supplied, The drying unit 400 includes a drying unit 400 that dries the transfer paper 10 from which the toner has been removed, and a paper receiving unit 500 that receives the transfer paper 10 discharged from the drying unit 400.

The paper feed unit 100 feeds the transfer paper 10 stacked on the bottom plate 101 from the uppermost one by a paper feed roller 102, and performs a double feed by a separation mechanism including a feed roller 103a and a separate roller 103b. Is separated and only one sheet of transfer paper 10 is sent out. The transfer paper 10 sent out by the paper supply unit 100 is conveyed by a conveyance roller pair 110, subjected to timing adjustment and skew correction by a registration roller pair 104, and sent to the next liquid application unit 200.

[0050] The liquid application unit 200, the treatment liquid 20
Container 211 filled with a predetermined amount of
The submerged belt transport unit 212, which is a round belt that is wrapped around a support roller and rotatively driven while immersed in 0, a brush roller provided to face the submerged belt transport unit 212 across the transfer paper 10 213, a belt transport unit 214 and a brush roller 215 provided to transport the transfer paper 10 to which the liquid is applied, a pair of squeezing rollers 216 for removing an excess of the processing liquid 20 applied to the transfer paper 10, and the liquid container 2.
A liquid supply device 217 for supplying the processing liquid 20 to the apparatus 11 and a driving unit (not shown) such as the submerged belt transport unit 212 are provided.

[0051] Here, the tank the liquid supply apparatus 217 is freely exchangeable replenisher bottle 218, the replenisher suitably processing liquid 20 from the bottle 218 by the electromagnetic pump 219 is supplied 22
0, a liquid supply pump 221 such as a blade pump built in the tank 220, a pump motor 212 for rotating the liquid supply pump 221, and a liquid supply pipe 223 for sending the processing liquid 20 from the liquid supply pump 221 to the liquid container 211. And a drain pipe 224 for returning the processing liquid 20 discharged from a discharge port provided at a lower part of the liquid container 211 into the tank 220. In this configuration, the processing liquid 20 sent by the liquid supply pump 221 is supplied to the liquid container 211 through the liquid supply pipe 223. Then, the processing liquid 20 discharged from the discharge port of the liquid container 211 is returned into the tank 220 through the drain pipe 224 and circulated. Such a processing liquid 2
The amount of liquid supplied by the liquid supply pump 221 is set such that the submerged belt transport unit 212 is immersed in the processing liquid 20 in the liquid container 211 at the time of the steady circulation operation of zero.

[0052] The toner separating unit 300, an offset belt 311 as a belt-shaped separating member which is wound around a plurality of support rollers 312 and 313 or the like, is provided so as mutually pressing to each other across the offset belt 311 A heating block 314 and an upper heating roller 315 having a built-in heating lamp, and a blower fan 316 as a cooling means for cooling toner adhered to the surface of the offset belt 311.
A cleaning device 317 for removing toner from the surface of the offset belt 311;
A cleaning roller 318 for wiping the surface of the offset belt 311 after cleaning at 17 and applying a predetermined tension to the belt is provided.

[0053] Here, the heating block 314 and the upper heat roller 315 heats the toner are fixed to the transfer paper 10 with is brought into close contact with the offset belt 311 the toner image surface of the transfer sheet 10 as described above softened It is to let.

[0054] Further, the offset belt 311, the toner surface on the side in contact with the toner is softened, and is formed of a material having adhesion greater adhesion between the surface and the toner of the transfer paper 10 . For example, the belt itself is a metal material such as aluminum, copper, and nickel, or polyethylene terephthalate (PET) in which titanium oxide is dispersed.
And the like. When a polymer material is used as the surface material, it is preferable to form a multilayer structure having at least two layers of a base and a surface layer from the viewpoints of prevention of elongation due to tension and heat and durability.

[0055] Also, the downstream side in the moving direction of the offset belt 311 from the contact portion between the upper heat roller 315 of the heating block 314, the bent portion that changes approximately 90 degrees the direction of movement of the offset belt 311 at a predetermined radius of curvature Is formed, and the direction of movement of the belt is rapidly changed around the bent portion to separate the curvature of the transfer paper 10 from the offset belt 311.

[0056] Further, the blower fan 316, the toner on the offset belt 311 above is heated in such a heating block 314 viscosity is increased by cooling, thereby, to solidify the toner removed by the cleaning device 317 It is to make it easier.

[0057] Further, the cleaning device 317, the brush roller 319 metal brush (stainless steel loop brush) is provided on the surface, the offset belt 31
This is to mechanically peel off and remove the toner attached to one surface. The brush roller 319 is urged toward the surface of the offset belt 311 by a pressure spring (not shown). A metal blade may be provided downstream of the brush roller 319 in the moving direction of the offset belt 311.

[0058] Further, the wiping roller 318 is made of a material capable of satisfactorily effective wiping at least a surface portion. For example, it is formed by winding a cloth or the like around the peripheral surface of the roller body. In this example, in order to cause the wiping roller 80 to exert a sufficient wiping effect over a long period of time, the wiping roller 80 is not normally rotated along with the offset belt surface, but is rotated by a predetermined angle at an appropriate timing to make contact with the offset belt surface. To be replaced.

[0059] The drying unit 400 is, for example liquid holding amount of the transfer paper 10 is used for drying the transfer paper 10 to be less than 10% of the paper weight, and the heating drum 411 consisting of heat lamps built as aluminum And a paper pressing belt 412 that is wound around a plurality of support rollers and moves endlessly while being wound around the peripheral surface of the heating drum 411 at a fixed angle. As a material of the paper pressing belt 412, a material having heat resistance and air permeability, for example, cloth such as canvas, cotton, and tetron can be used. Further, the transfer paper 10 is shrunk in a completely free form while drying progresses in a region where the transfer paper 10 is wound around the peripheral surface of the heating drum so that wrinkles do not occur, and the transfer paper 10 is hardly curled or wavy. The transfer paper 10 can be held between the peripheral surface of the heating drum and the inner surface of the belt with a certain amount of force.

[0060] The paper receiving unit 500, the conveying roller pair 511 of for conveying the transfer sheet 10 from the drying unit 400, the branching claw 512, the discharge roller pair 513,51
4. Internal discharge tray 515, external discharge tray (not shown)
And the like, and if necessary, a built-in discharge tray 51
5 or an external discharge tray. Here, the internal discharge tray 515 is configured to be slidable so that it can be pulled out to the front side of the apparatus.

In the toner removing device having the above structure, the transfer paper 10 sent from the paper supply unit 100 is uniformly applied with the processing liquid 20 on its toner image surface (the lower surface in the figure) by the liquid application unit 200. The toner is sent to the toner peeling unit 300. The transfer paper 10 is
Is fixed by the heating from the heating block 314 and the upper heating roller 315, and the offset belt 3
11 Adhere to the surface. Then, when the transfer paper 10 and the offset belt 311 are separated from each other around the bent portion of the heating block 314, the toner adhered to the surface of the offset belt 311 peels off from the transfer paper 10 and thereby the transfer paper 1
0 removes toner. The transfer paper 10 from which the toner has been removed is dried in the drying unit 400, and the discharge roller pair 5
At 03, the paper is discharged onto the built-in paper discharge tray 505 of the paper receiving unit 500. As described above, the transfer paper 1 to which the toner is attached
Since the liquid is supplied to the transfer paper 10 and the toner is peeled off while the liquid permeates the interface between the transfer paper 10 and the toner, the toner can be removed without damaging the paper fibers.

[0062] Here, in the toner removing device,
The feed roller 103a and the separate roller 103b of the paper feed unit 100, the upper heating roller 3
15 and offset belt 311, drying unit 400
Drum 411 and a paper pressing belt 412. Depending on the setting of the transport speed in these three clamping and transporting means, the transfer paper 10 may be stressed or bent, causing the transfer paper 10 to elongate, cut, wrinkle in the transport direction, or bend in the folding direction. In order to prevent the transfer paper 10 from being cut, wrinkled, stretched, or the like during the transfer of the transfer paper in the apparatus,
The transfer speed of the transfer means for transferring the transfer paper 10 while nipping the transfer paper 10 may be switched for a predetermined time to control the transfer paper 10 to have a predetermined bending.

[0063] Hereinafter, FIG. 15 a control method of the transfer paper conveyance
This will be described with reference to (a) and (b). In FIG. 15 (a), a first pair of conveying rollers 600 as the nipping and conveying means is used.
And the second pair of transport rollers 610 are arranged such that the latter is on the downstream side in the transport direction of the transfer paper 10, and a paper guide plate 630 is disposed between the pair of rollers. Here, in order to know the timing of the leading edge of the transfer paper entering the nip of the second transport roller pair 610, for example, a paper detection sensor 640 is disposed immediately before the second transport roller pair 610.

[0064] Using the signal from the paper detection sensor 640,
The drive control of the pair of rollers 600 and 610 as shown in the timing chart of FIG. That is, until the leading edge of the transfer paper reaches the nip of the second transport roller pair 610, both the roller pairs 600 and 610 are driven so as to have the normal transport speed V0. When the leading edge of the transfer paper is detected by the paper detection sensor 640, the transport speed of the second transport roller pair 610 is reduced to a low speed V lower than the normal transport speed V0.
Switch to 1. When the set time T1 corresponding to the time required for the leading edge portion of the transfer paper to pass through the nip of the second transport roller pair 610 from the time of detection of the leading edge of the transfer paper elapses, the transport speed of the second transport roller pair 610 is reduced. Return to normal transport speed. According to this, during the period T2 in which the rear end portion is conveyed at the normal speed V0 by the first conveying roller pair 600 and the front end portion is conveyed at the low speed V1 by the second conveying roller pair 610, both the conveying rollers The transfer paper portion between the pair 600 and 610 is bent. Therefore, stress is not generated on the transfer paper, and it is possible to prevent stretch, breakage, and wrinkles in the transport direction. The maximum amount of sag is determined by the time T2 and the difference between the two speeds (V0-V1). By setting these so that the maximum amount of sagging does not occur, the folding is performed. Wrinkles can also be prevented.

[0065] Incidentally, the paper detection sensor 640, making it possible to now in the signal alone or in combination other timing information, such as the paper start signal of the apparatus, the timing of the speed switching of the second conveying roller pair 610 If possible,
Any other location that can achieve this aim may be placed. For example, it may be downstream of the second transport roller pair 610. In this case, the switching to the low speed V0 may be performed based on other timing information, and the return to the normal speed may be performed using the signal of the paper detection sensor 640. The signal of the paper detection sensor 640 may be used after the sheet passes through the nip of the second transport roller pair 610 to some extent. Although a contact type sensor is used as the paper detection sensor 640 in the illustrated example, a non-contact type sensor using light or the like may be used.

[0066] In addition, both the transport roller pair as described above 60
In order to drive 0 and 610 at different transport speeds for a predetermined period, dedicated drive motors may be used.

[0067] The method above conveyance, by applying to the toner removing apparatus of FIG. 14, it is possible to prevent the above problem of the transfer paper. That is, as one combination, the feed roller 103a and the separate roller 103b of the sheet feeding unit 100 correspond to the first conveying roller pair 600, and the upper heating roller 315 and the offset belt 311 of the toner peeling unit 300 correspond to the second conveying roller. These transport speeds are controlled to correspond to the roller pair 610. As another combination, the upper heating roller 315 and the offset belt 311 of the toner peeling unit 300 correspond to the first transport roller pair 600, and the heating drum 411 and the paper pressing belt 412 of the drying unit 400 transport the second transport roller 600. These transport speeds are controlled to correspond to the roller pair 610. Further, it is assumed that each of these two combinations is sequentially established with the movement of the transfer paper 10 so that the transfer paper will not fail at any point in the transport area from the paper feeding unit 100 to the drying unit 400. May be.

In the above-described conveying method, the conveying speed of the downstream pinching / conveying means is switched to a low speed to form a conveying speed difference which causes a deflection between the upstream pinching / conveying means. May be switched to a high speed.

[0069]

According to the first or second aspect of the present invention, the heating of the image forming substance is maintained until the image carrier is separated from the peeling member, and the image forming substance is separated from the peeling member before being cooled and solidified. by separating the image holding member, at the time of the separation, to maintain said imaging material softened or molten state, the adhesion to the image holding member of said image forming substance to the release member of said image forming substance Since the adhesive force can be remarkably reduced as compared with the adhesive force, there is an effect that the peeling performance of the image forming substance by the peeling member can be significantly improved.

[0070] According to the invention of claim 3, the curvature separation of the downstream side of the peeling member moving direction of the heating support member, so provided in a position above image forming material is not cooled and solidified,
During separation from the release member of the image holding member, maintains said imaging material softened or molten state, the adhesion to the image holding member of said image forming substance, the release of said image forming substance
It can be significantly reduced compared to the adhesive force to the member . Therefore, there is an effect that the peeling performance of the image forming substance by the peeling member can be remarkably improved.

[0071] According to the fourth aspect of the invention, by forming a flat portion on the surface of the heating support member for pressing the elastic body roller used as the pressing member, the image holding member to press-contact portion of the elastic body roller Can be provided on the same plane as the transport path of the image carrier, so that the occurrence of jamming and wrinkling of the image holding member in the transport path can be reduced. Then, by making the length of the flat surface in the moving direction of the peeling member equal to the length of the pressure contact portion between the elastic roller and the heating support member in the moving direction, the curvature of the end of the pressure contact portion is obtained. Since a separating portion can be provided, the image carrier is separated from the surface of the peeling member in a higher temperature range,
The adhesion to the image holding member of said image forming substance can be further reduced significantly compared to the adhesion to the release member of said image forming substance. Accordingly, there is an effect that the performance of peeling the image forming substance by the peeling member can be further improved. A slope is formed on the surface of the heating support member so as to descend from the end of the press-contact portion on the upstream side in the moving direction of the peeling member toward the upstream side. When the liquid is applied to the image holding member by sliding the peeling member to the part and the slope part, the liquid that easily accumulates at the entrance of the pressure contact part along the surface of the slope part. Since the liquid can be sequentially discharged, there is an effect that a decrease in thermal efficiency at the time of heating the peeling member due to the liquid pool can be prevented.

[0072] According to the invention of claim 5, by constituting the heating support member high thermal conductor, the time for raising the temperature of the heating support member to a predetermined temperature is shortened, the warm-up time is shortened, In addition, since the responsiveness of the temperature adjustment of the heating support member is improved, the temperature of the surface of the heating support member can be stabilized. And
By providing a holder for holding the heating support member via a heat insulator, heat loss due to heat transfer from the heating support member can be reduced, so that the effect of improving thermal efficiency can be achieved. is there.

[0073] According to the invention of claim 6, by providing a temperature detecting means for detecting the temperature of該剥release member surface immediately after the image carrier are separated, the temperature change of the peeling member at the curvature separation position near Can be directly and instantaneously detected, and the temperature detection result can be used for controlling the temperature of the peeling member in the vicinity of the curvature separation position by the heating support member, so that the temperature of the peeling member can be stabilized. There is an effect that it can be achieved.

According to the seventh aspect of the present invention, the curvature separating section
Is provided at a position where the image forming substance does not cool and solidify.
When the image carrier is separated from the peeling member.
To maintain the imaging substance in a softened or molten state,
The adhesion of the imaging substance to the image carrier
Quality is significantly lower than the adhesion to the release member.
Can be Therefore, image formation by the peeling member
It is said that the peeling performance of the substance can be significantly improved
effective.

[Brief description of the drawings]

FIG. 1 is a front view illustrating a schematic configuration of a toner peeling unit of a toner removing device according to an embodiment.

FIG. 2A is a front view of a main part of the toner peeling unit. (B) is a front view of a main part of a toner peeling unit according to a modification.

FIG. 3 is an enlarged view of a bent portion of the heating support member.

FIG. 4 is an explanatory diagram of a liquid pool generated when a liquid is applied to transfer paper.

FIG. 5A is a front view of a main part of a toner peeling unit according to another modification. (B) is an enlarged view of a press-contact portion of the main part of the heating support member and the heating roller.

FIG. 6 is a perspective view of a main part of a toner peeling unit according to still another modification.

FIG. 7 is a front view of a main part of a toner peeling unit according to still another modification.

FIG. 8 is a front view of a main part of a toner peeling unit according to still another modification.

FIG. 9 is a perspective view of a main part of a toner peeling unit according to still another modification.

FIG. 10 is a front view of a main part of a toner peeling unit according to still another modification.

FIG. 11 is a front view of a main part of a toner peeling unit according to still another modification.

FIG. 12 is a front view of a main part of a toner peeling unit according to still another modification.

FIG. 13 is a front view showing a schematic configuration of a toner removing unit of a toner removing device according to a conventional example.

FIG. 14 is a front view showing a schematic configuration of a toner removing device to which the present invention can be applied.

FIG. 15A is an explanatory diagram of a transfer paper transport method in the toner removing device. (B) is a timing chart relating to the transport method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heater 2 Heating support member 2a Flat part 2b Bend part 2c Slope part 2d Elastic body 3 Heat insulator 4 Holding member 5 Temperature sensor 6 Movable member 10 Transfer paper 41, 42 Support roller 44 Offset belt 45 Heat roller 45a Heat lamp 100 Supply Paper unit 200 Liquid application unit 300 Toner peeling unit 400 Drying unit 500 Paper receiving unit 600 First transport roller pair 610 Second transport roller pair 630 Paper guide plate 640 Paper detection sensor T Toner

Continued on the front page (72) Inventor Toshio Watanabe 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Shigeru Fujita 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Inside Ricoh (72) Inventor Masaru Makai 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Tomoaki Sugawara 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company Limited (56) References JP-A-57-168281 (JP, A) JP-A-7-121073 (JP, A) JP-A-7-199756 (JP, A) JP-A-4-89271 (JP, A) JP-A-64-97675 (JP, A) JP-A-6-286269 (JP, A) JP-A-4-64472 (JP, A) JP-A-4-82983 (JP, A) JP-A-1-297294 ( JP, A) JP-A-3-68460 (JP, U) JP-A-3-152590 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03G 21/00 570-578 B41J 29/00-29/70

Claims (7)

(57) [Claims] An image is formed by an image forming apparatus.
While heating the image forming substance on the discharged image carrier from the image forming apparatus so as to melt or soften, greater adhesion to the image holding member and said image forming material for the surface to said image-forming substance the Rukoto belt-shaped separating member made of a material having adhesion is brought into contact with said image forming substance, the release portion
After the material and the image forming substance are adhered to each other, the peeling member and the image carrier are separated, and at the time of this separation, the image forming substance is separated from the image carrier and removed from the image carrier. In the method for removing an image forming substance, the image forming substance is maintained in a molten state or a softened state until the image holding member is separated from the release member, and the image forming substance is removed from the release member before the image forming substance is cooled and solidified. A method for removing an image forming substance from an image carrier, comprising separating the carrier. 2. An image forming apparatus, wherein an image is formed by an image forming apparatus.
While heating the image forming substance on the discharged image carrier from the image forming apparatus so as to melt or soften, greater adhesion to the image holding member and said image forming material for the surface to said image-forming substance the Rukoto belt-shaped separating member made of a material having adhesion is brought into contact with said image forming substance, the release portion
After the material and the image forming substance are adhered to each other, the peeling member and the image carrier are separated, and at the time of this separation, the image forming substance is separated from the image carrier and removed from the image carrier. The image forming substance until the image carrier is separated from the peeling member .
An apparatus for removing an image forming substance from an image carrier, comprising: means for maintaining a material in a molten state or a softened state . 3. An image is formed by an image forming apparatus.
While heating the image forming substance on the discharged image carrier from the image forming apparatus so as to melt or soften, greater adhesion to the image holding member and said image forming material for the surface to said image-forming substance the Rukoto belt-shaped separating member made of a wood charge having adhesion is brought into contact with said image forming substance, the release portion
After the material and the image forming substance are adhered to each other, the peeling member and the image carrier are separated, and at the time of this separation, the image forming substance is separated from the image carrier and removed from the image carrier. An image forming substance removing apparatus, comprising: a peeling member driving means for moving the peeling member; a heating support member having a heating means therein and slidably supporting the moving peeling member on the surface; A peeling member is provided on the surface of the support member, and a pressing member is provided for holding the image holding member in contact with the peeling member in pressure contact with the peeling member. And a curvature separating portion for guiding the moving direction of the peeling member so as to separate the image carrier from the surface of the peeling member by curvature at a position where the image forming substance is not cooled and solidified. An apparatus for removing an image forming substance from an image carrier. 4. A flat portion is formed on the surface of the heating support member which is pressed against the elastic roller used as the pressing member, and the length of the flat surface in the moving direction of the peeling member is determined by the elastic roller and the elastic roller. The length of the press contact portion with the heating support member in the moving direction is made equal to the length of the press contact portion on the upstream side in the moving direction of the peeling member. 4. The apparatus according to claim 3, wherein the separation member is formed on the surface of the support member and the separation member is slid and moved on a flat portion and a slope portion of the surface of the heating support member. 5. An image from an image carrier according to claim 3, wherein said heating support member is made of a high thermal conductor, and a holder for holding said heating support member via a heat insulator is provided. Forming substance removal device. 6. An apparatus according to claim 3, further comprising a temperature detecting means for detecting a temperature of the surface of said peeling member immediately after said image carrier is separated. 7. An image is formed by the image forming apparatus and the image is formed.
The image forming substance on the image carrier discharged from the image forming apparatus is dissolved.
While heating to melt or soften, the surface is
Adhesive force between the image carrier and the image forming substance with respect to the forming substance
Belt-like exfoliation of a material with greater adhesion
By bringing the member into contact with the image forming substance,
After adhering the material and the image forming substance, the release member and the image
The image forming substance is separated from the carrier during the separation.
An image formed from the image carrier that is peeled off and removed from the image carrier
In the quality removal device, Providing a peeling member driving means for moving the peeling member, The imaging substance in contact with the release member is in a molten state or
The image is held in a position where it is maintained in a softened state and does not solidify by cooling.
The peeling portion so that the body is separated from the surface of the peeling member by curvature.
Features a curvature separation unit that guides the direction of material movement
An apparatus for removing an image forming substance from an image carrier.