JPH08297444A - Method and device for removing image forming material - Google Patents

Abstract

PURPOSE: To perform a plurality of times a peeling process for peeling an image forming material from an image carrier and a pressurizing process for applying a pressure to the image holding body from which the image forming material has been peeled in order to remove the image forming material from the image holding body well without making fiber peeling, etc., occur on the image holding body. CONSTITUTION: First peeling process is performed with respect to a paper sheet 10 by a first peeling roller 35a, and a first backup roller 37a, etc., and first pressurizing process is performed with respect to the paper 10 by a first upper pressure roller 51a and a first lower pressure roller 52a, etc. Furthermore, second peeling process is performed with respect to the paper 10 by a second peeling roller 35b and a second backup roller 37b, etc., and second pressuring process is performed with respect to the paper sheet 10 by a second upper pressure roller 51b and a second lower pressure roller 52b, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of removing an image-forming substance which forms an image from an image-bearing member on which an image is formed by an image-forming device such as a copying machine, a facsimile machine or a printer. More specifically, a liquid supplying step of replenishing the surface of the image holding member with a processing liquid to reduce the adhesive force between the surface and the image forming material, and heating the image forming material on the surface of the image holding member subjected to the liquid supplying step. In addition, the present invention relates to a method for removing an image forming substance, which comprises a step of pressing a peeling member onto the surface, and thereafter separating the release material from the surface to peel the image forming substance from the surface.

The present invention also provides copying, facsimile,
The present invention relates to an image-forming substance removing device that removes an image-forming substance that forms an image from an image holding member on which an image is formed by a printer or the like. Specifically, the image-forming substance is stably attached to a fibrous surface. The present invention relates to an image-forming substance removing device provided with a liquid supplying means for supplying a processing liquid to an image holding member and a peeling means for peeling an image forming substance from the surface.

[0003]

2. Description of the Related Art Various types of image forming substance removing methods and image forming substance removing devices for removing an image formed of an image forming substance from an image carrier are known. For example, it is known that an image carrier to which toner as an image forming substance is attached is immersed in a solvent that dissolves toner resin, and ultrasonic vibration is applied in that state to remove the toner from the image carrier. (See JP-A-1-101576 and JP-A-1-101579). Further, in order to remove an image formed of toner as an image forming substance formed on the image carrier, a solvent that dissolves the toner resin is applied to the image, sprayed, and the like, and the dissolved toner is washed and sucked. It is also known to remove it (see JP-A-4-300395). However, many of the solvents used for these substances are ignitable and toxic, and it is difficult to use them in general offices regardless of the removal work performed in a reprocessing plant or the like.

Further, as a method and apparatus for removing an image-forming substance from an image carrier, an image is formed on an erasable paper on which a release agent for facilitating the removal of the image-forming substance is applied to the image carrier in advance. It is known that an image-forming substance is removed by heat-pressing a peeling body on the sheet (Japanese Patent Application Laid-Open No. Hei 4 (1999) -54242).
-64472). It is also known that the image carrier is subjected to a release treatment in advance to remove the image forming substance attached to the image carrier (Japanese Patent Laid-Open No. 4-67043).
issue). It is also known to use plastic, metal, ceramic or the like as an image carrier, and remove the image forming substance from the image carrier by heating the image forming substance attached to the image carrier (special feature). Kaihei 1-297294
issue). However, all of these methods and apparatuses are based on the assumption that the image forming substance attached to the image carrier other than the plain paper is removed, and the image formed on the plain paper cannot be removed.

Therefore, in order to eliminate these adverse effects,
The present applicant has previously proposed a new image forming substance removing device and a new image forming substance removing method. In this apparatus and method, first, a treatment liquid is supplied to the surface of the image carrier by using a liquid supply means to reduce the adhesion between the surface and the image forming substance. Then, the peeling member is pressure-bonded to the image-forming substance whose adhesion to the surface of the image carrier is lowered, and then the peeling member is separated from the surface to remove the image-forming substance from the surface (for example, , Japanese Patent Application No. 4-255916). By using this device and method, it is not necessary to use a solvent that is ignitable and toxic, so it can be used in general offices, and it is now widely used not only from an image carrier that has undergone a special treatment. The image formed by an image forming apparatus such as a copy, a facsimile, or a printer is attached,
The image-forming substance forming an image can be removed from the image carrier made of plain paper.

[0006]

However, even if the image forming substance is removed by this method and apparatus, if the image to be removed is a solid image,
It was confirmed that the image-forming substance was not completely removed from the image carrier, and the image-forming substance might remain on the image carrier.

The present invention has been made in view of the above problems, and an object thereof is to form an image forming an image formed on an image carrier made of plain paper, regardless of the kind of the image to be removed. An object of the present invention is to provide an image forming substance removing method and an image forming substance removing apparatus, which are capable of favorably removing a substance without remaining on the image carrier.

[0008]

In order to achieve the above object, the method of removing an image-forming substance according to claim 1 applies a treatment liquid to an image carrier having an image-forming substance stably attached to a fibrous surface. A liquid supplying step of supplying a liquid to reduce the adhesion between the surface and the image forming material, and heating the image forming material on the surface of the image holding member subjected to the liquid supplying step and applying the liquid to the surface. A peeling step in which the peeling member is pressure-bonded, and then the peeling member is separated from the surface to peel the image forming substance from the surface, and pressure is applied to the image carrier subjected to the peeling step. An image forming substance removing method including a pressurizing step of applying a pressure treatment, characterized in that the image forming substance removing step including the peeling step and the pressing step is repeated a plurality of times.

The image-forming substance removing device according to claim 2 is
A liquid supplying means for supplying a processing liquid to the image carrier on which the image forming substance is stably attached to the fibrous surface to reduce the adhesion between the surface and the image forming substance; The image forming substance on the surface of the image carrier, to which the treatment liquid is supplied by the liquid supply means, is heated and the first peeling member is pressure-bonded to the surface, and then the first peeling member is separated from the surface to separate it from the surface. First peeling means for peeling off the image forming substance, and first pressing means for performing pressure treatment on the surface of the image carrier from which the image forming substance has been peeled off by the first peeling means.
A peeling treatment in which a second peeling member is pressure-bonded to the surface of the image carrier pressed by the first pressure unit, and then the second peeling member is separated from the surface to peel the image-forming substance from the surface. And a second pressurizing unit that performs a pressurizing step of pressurizing the surface of the image holding body from which the image forming substance is peeled off by the second peeling unit, and the image holding body is conveyed in the apparatus main body. And a transporting means for carrying out.

The image-forming substance removing device according to claim 3 is
A liquid supplying means for supplying a processing liquid to the image carrier on which the image forming substance is stably attached to the fibrous surface to reduce the adhesion between the surface and the image forming substance; The image forming substance on the surface of the image carrier supplied with the treatment liquid by the liquid supplying means is heated and the peeling member is pressure-bonded to the surface, and then the peeling member is separated from the surface to separate the image forming substance from the surface. A single peeling means for performing a peeling treatment for peeling the image forming member, a single pressing means for performing a pressure treatment for pressing the surface of the image carrier on which the image-forming substance has been peeled by the peeling means, and the pressing means. An image forming substance removing apparatus comprising: a conveying unit that conveys a pressurized image carrier to the peeling unit, wherein the peeling unit performs a plurality of peeling processes on the same image carrier. A plurality of pressing means are provided for the same image carrier. Is characterized in that those subjected to pressure treatment.

An image forming substance removing device according to a fourth aspect of the present invention is
The image forming substance removing apparatus according to claim 3, further comprising a removing unit that removes the image forming substance attached to the peeling member every time the peeling process is performed once.

Further, the image forming substance removing device according to claim 5 is
The image-forming substance removing device according to claim 2,
It is characterized in that the conveying means conveys the image holding member by sandwiching the image holding member between the sealing members composed of two sealing members that are in contact with each other and do not pass moisture. .

An image forming substance removing device according to a sixth aspect of the present invention is
The image forming substance removing apparatus according to claim 3, wherein the conveying unit holds the image holding member between the sealing members formed of two sealing members that are in contact with each other and do not allow water to pass therethrough. The ejected image carrier is conveyed by a distance A that is a distance shorter than the length L of the image carrier in the carrying direction, and the peeling device is long in the carrying direction of the image carrier. The peeling process is performed a plurality of times for each of the L / A areas divided into the size A.

[0014]

In the image forming substance removing method according to claim 1 or the image forming substance removing device according to any one of claims 2 to 6, since the same image carrier is subjected to a plurality of peeling processes,
Even if the image-forming substance that has not been peeled by the preceding peeling process remains on the surface of the image carrier, the image-forming substance is removed by the subsequent peeling process. Further, since the pressure treatment is applied to the image holding body which has been subjected to the peeling treatment,
The fiber peeling in which the fibrous material on the surface of the image holding body is about to be peeled off is eliminated by pressing the peeled off fiber. Moreover, since the pressurizing process is performed a plurality of times on the same image carrier, the fiber peeling can be eliminated better than when the process is performed only once.

In the image forming substance removing device of the third aspect, since the same image holding member is repeatedly peeled by a single peeling means, a plurality of peeling means are provided to perform the peeling treatment a plurality of times. No need. Further, since the same image carrier is repeatedly subjected to the pressure treatment by a single pressure means, it is not necessary to provide a plurality of pressure means for performing the pressure treatment a plurality of times.

In the image-forming substance removing device according to the fourth aspect, the removing means removes the image-forming substance adhering to the peeling member every time the peeling process is performed, and the image-forming substance is removed. The following peeling process is performed using a certain peeling member. Therefore, in any of the multiple stripping treatment,
The peeling of the image-forming substance from the image carrier is performed by using the peeling member to which the image-forming substance is not attached.

In the image forming substance removing device of the fifth aspect, since the image carrier is carried while being carried by the watertight sealing member, the water in the processing liquid supplied from the liquid supplying means is carried during the carrying. Evaporation is prevented. For this reason, in order to prevent the image-forming substance once peeled off from being redeposited on the image carrier due to the lack of water contained in the image carrier due to the evaporation of water, the amount of evaporated water is estimated. There is no need to replenish the image carrier with a large amount of processing liquid.

In the image-forming substance removing device according to the sixth aspect, the image carrier is carried while being sandwiched by the moisture-tight sealing member, so that the liquid supplying process is performed similarly to the image-forming substance removing device according to the fifth aspect. There is no need to replenish the image carrier with a large amount of processing liquid, which allows for the amount of water that evaporates at times. Further, in the image forming substance removing apparatus according to claim 6, since the conveying means conveys the image holding body by the distance A which is shorter than the length direction L of the holding body, the conveying means conveys the distance L. The conveying means can be made smaller than the means. Further, in the image-forming substance removing device according to the sixth aspect, the peeling process is performed a plurality of times for each of the regions divided into the length A. Therefore, the water in the processing liquid contained in the area of the image carrier on which the peeling process is performed evaporates by once protruding to the outside of the transport unit having the transport distance A, and the image carrier in a state in which the moisture has evaporated. Is not subjected to the next peeling treatment. (Hereinafter, margin)

[0019]

【Example】

[Example 1] Hereinafter, the present invention will be described as an image-forming substance composed at least partially of a fibrous material containing cellulose fibers as a main component, and the fibrous material comprising polystyrene, acrylic resin, methacrylic resin, or the like. Image forming substance removing device (hereinafter, referred to as “toner removal”) that removes the toner from a sheet serving as an image holding body on which a rough water-based image made of thermo-flexible ink (hereinafter, simply referred to as “toner”) is formed. The first embodiment applied to a device) will be described.

FIG. 1 is a front view showing a schematic structure of a toner removing device according to this embodiment. The toner removing device includes a paper feed tray 80 in which the paper 10 is stored, a liquid applying device 20 as a liquid supplying device that supplies the paper 10 with a processing liquid that makes the toner adhesion state of the paper 10 unstable, and a processing liquid. The peeling device 30 as a peeling unit that heats the toner on the surface of the paper 10 to which the toner is applied and presses the peeling belt 34 as a peeling member on the surface, and then separates the peeling belt 34 from the paper 10 to peel the toner. Further, a pressure device 50 is provided as a pressure means for repairing the waviness and the mess generated on the paper 10 by pressing the surface of the paper 10 that has been subjected to the peeling process. The peeling device 30 functions as a first peeling unit and a second peeling unit, and the peeling belt 34 is
It functions as a first peeling unit and a second peeling unit.

The liquid applying device 20 includes a liquid container 22 containing a treatment liquid 21, an application roller 23 provided to hold the paper 10 above the liquid container 22, and a pressing roller 2.
4. A pumping roller 25 for supplying the processing liquid 21 in the liquid container 22 to the coating roller 23. Then, the paper 10 is conveyed while being sandwiched between the application roller 23 and the pressing roller 24, whereby the processing liquid 21 is applied to the paper 10. Water may be used as the treatment liquid 21, but MA 80 of about 5 weight percent may be used.
It is preferable to use an aqueous solution of a surfactant such as (manufactured by Mitsui Cyamide). Further, the amount of the processing liquid 21 applied is appropriately about 2 grams per A4 sheet.
Further, as the coating roller 23, a roller whose outer surface is made of rubber such as chloroprene and has an outer diameter of 20 mm is used, and as the pressing roller 24, a roller made of stainless steel is used.
If a minute groove is provided on the peripheral surface of the pressing roller 24,
Not only the surface of the paper 10 on the side in contact with the application roller 24,
Since the treatment liquid 21 is also applied to the surface in contact with the pressing roller 24, it is possible to prevent the paper 10 from curling.

The peeling device 30 includes an endless holding belt 32 stretched under a predetermined tension between two supporting rollers 31a and 31b above the sheet conveying path, and two supporting rollers below the sheet conveying path. An endless peeling belt 34 is provided which is stretched around 33a and 33b with a predetermined tension so as to face the pressing belt 32. Then, the pressing belt 32 and the peeling belt 34 are arranged so as to come into contact with each other in a contact area on the sheet conveyance path. Here, it is desirable that the pressing belt 32 and the peeling belt 34 are configured by a sealing member that does not allow water to pass therethrough in order to prevent water in the processing liquid 21 from evaporating from the paper 10. Therefore,
In this embodiment, the peeling belt 34 has a thickness of 0.1 m.
A high molecular weight material such as polyethylene terephthalate having TiO ₂ dispersed therein is used as the pressing belt 32, and a polyimide film having a thickness of approximately 0.05 mm dispersed with a fluorine material is used. Further, in order to prevent the water in the treatment liquid 21 from evaporating from the paper 10, it is desirable that the pressing belt 32 and the peeling belt 34 are in close contact with each other as much as possible. Note that a polymer material such as polyethylene terephthalate used as a material of the peeling belt 34 in which TiO ₂ is dispersed has a tendency to adhere toner more easily than the paper 10.

Further, the pressing belt 32 and the peeling belt 3
4, the support roller 31, and the support roller 32 are used for the paper 10
The sheet 10 is also used as a conveying unit for conveying the sheet. The sheet 10 is sandwiched between the holding belt 32 and the peeling belt 34, which are respectively driven by one of a pair of supporting rollers, and the sheet 10 is rubbed by the frictional force with the belt. Transported to the right.

Further, in order to press the pressing belt 32 and the peeling belt 34 into contact with each other at three places in the contact area, this apparatus has a first peeling roller 35a, a second peeling roller 35b, a third peeling roller 35c, and A first backup roller 37a and a second backup roller 37, which are positioned so as to sandwich both belts 32 and 33 with these pressure rollers.
b, a third backup roller 37c is provided. The surface of each of the peeling rollers 35 is made of silicon rubber, and a heater 36 including a halogen lamp or the like as a heating means is built therein, and the outer diameter thereof is 20 mm. A roller having an outer diameter of 20 mm is used as each backup roller 37.

Further, the sheet 1 pressed against the peeling belt 34 by each peeling roller 35 and each backup roller 37.
In order to separate 0 from the peeling belt 34, the peeling device 30 includes a first separating rod 38a and a second separating rod for separating the peeling belt 34 and the pressing belt 32 to form a minute space between the two belts. 38b and a third separating rod 38c. These separating rods 38 are metal rods having an outer diameter of 8 mm, and separate the paper 10 having toner adhered to the surface thereof from the peeling belt 34.

In the peeling device 30 having the structure described above, the first peeling roller 35a, the first backup roller 37a, the first separating rod 38a, the peeling belt 34, and the pressing belt 32 function as the first peeling means. The second peeling roller 35b, the second backup roller 37b, the second separating rod 38b, the peeling belt 34, and the pressing belt 32 function as a second peeling unit.

The pressure device 50 includes a first upper pressing roller 51 provided at the rear of each separating rod 38 in the sheet conveying direction.
a, second upper pressing roller 51b, third upper pressing roller 51
c, and a first lower pressing roller 52a, a second lower pressing roller 52b, and a third lower pressing roller 5 which are positioned so as to sandwich the belts 32 and 33 in cooperation with the upper pressing rollers.
2c. Further, as the upper pressing roller 51 and the lower pressing roller 52, rollers having an outer diameter of 20 mm and having a surface made of silicon rubber are used. Further, in the pressure device 50, the first upper pressing roller 51a and the first lower pressing roller 52a function as a first pressing means, and the second upper pressing roller 51b and the first lower pressing roller 52b are the first pressing means. (2) It functions as a pressurizing means.

The toner removing device also includes a cleaning device 40 as a removing device for removing the toner adhering to the surface of the peeling belt 34. The cleaning device 40 includes a cleaning roller 41 that contacts the peeling belt 34, a heater 42 provided inside the cleaning roller 41, a blade 43 for scraping off the toner adhering to the cleaning roller 41, and a blade 43. A collection case 44 for collecting the dropped toner is provided. As the cleaning roller 41, a roller having an outer diameter of 30 mm obtained by nickel-plating a base body made of aluminum is used. In this cleaning device 40,
When the surface temperature of the cleaning roller 41 was set to 95 degrees Celsius and an attempt was made to remove the toner adhering to the surface of the peeling belt 34, the toner was successfully removed.

In this embodiment, the peeling device 30 and the pressurizing device 50 have a supporting roller 31a and a supporting roller 33a which are set to a length of 2L when the length of the sheet 10 in the conveying direction is L. It is provided in a region from the contact position to the position where the support roller 31b and the support roller 33b contact.

The operation of the toner removing device configured as described above will be described below. First, in the liquid supply step, the liquid applying device 20 supplies the processing liquid 21 to the lower surface of the paper 10 to reduce the adhesion between the surface and the toner. Then, the paper 10 that has been subjected to the liquid supply process is subjected to the first peeling process. In this peeling step, the toner attached to the surface of the paper 10 is heated, a peeling belt 34 as a peeling member is pressed against the surface, and then the peeling belt 34 is separated from the surface to remove the toner. is there. Further, in this peeling step, the paper 10 to which the processing liquid 21 is supplied is conveyed with its lower surface in contact with the peeling belt 34, and the first peeling roller 35a and the first backup roller 37a peel the paper 10 from the paper 10. The peeling belt 34 is pressure-bonded to the lower surface of the paper 10 by sandwiching the belt 34 with pressure. Simultaneously with the pressing, the toner attached to the paper 10 is heated by the heater 36a. The pressure-held paper 10 is separated from the peeling belt 34 by the first separating rod 38a.
The toner attached to the lower surface of the sheet adheres to the peeling belt 34 and is peeled from the lower surface of the sheet 10.

Paper 1 that has been subjected to the first peeling process
0 is the first upper pressure roller 51a and the first lower pressure roller 52
It is conveyed to a position where it comes into contact with a, and the first pressurizing step is performed at that position. This pressurizing step occurs when the first upper pressure roller 51a and the first lower pressure roller 52a press the peeling belt 34 against the surface of the paper 10 from which the toner has been removed, and when the toner is peeled off. This is a process of eliminating fiber peeling of the sheet 10.

Paper 1 which has been subjected to the first pressurizing step
0 is followed by a second peeling step by the second peeling roller 35b and the second backup roller 37b, and a second pressing step by the second upper pressure roller 51b and the second lower pressure roller 52b. The steps are performed sequentially. Further, the third peeling roller 35c and the third backup roller 37c perform the third peeling step, and the third upper pressure roller 51c and the second lower pressure roller 52c perform the third pressure step in sequence. To be done. Note that the second peeling step and the third peeling step are repetitions of the first peeling step, and the second pressurizing step and the third pressurizing step are the same as the first pressurizing step. The description is omitted because it is repeated.

The sheet 10 that has undergone the above steps is then
The paper is discharged to the paper discharge tray 90.

In the toner removing apparatus configured and operating as described above, the surface temperature of each peeling roller 35 is set to 95 degrees Celsius, the supply amount of the processing liquid is set to 2 grams per A4 sheet, and the conveying speed of the sheet 10 is set. Is 10 (mm / sec), and the result of the peeling process and the pressure process on the paper 10 is
It was confirmed that the toner was satisfactorily removed and that the paper 10 was not peeled off.

In this embodiment, the peeling roller 35, the backup roller 37, the upper pressure roller 51, and the lower pressure roller 52 are provided in groups of three, and the paper sheet 10 is subjected to a peeling step and a pressing step. However, the number of times may be other than 3 as long as the peeling step and the pressing step are performed a plurality of times. That is, even if two rollers are provided and each process is performed twice, four or more rollers are provided and four processes are performed.
It may be applied more than once.

Example 2 Hereinafter, the present invention will be described with reference to a thermo-flexible ink (hereinafter simply referred to as “image-forming material”, at least a part of which is composed of a fibrous material containing cellulose fibers as a main component, and which is a fibrous material. The second embodiment applied to an image forming substance removing device (hereinafter referred to as “toner removing device”) that removes the toner by peeling off the toner from a sheet as an image holding body on which a rough water-based image composed of (toner)) is formed. Examples will be described. FIG. 2 is a front view showing a schematic configuration of the toner removing device according to this embodiment. In addition, in FIG. 2, the liquid applying device 20,
Illustration of the paper feed tray 80 and the paper feed tray 90 is omitted. Also, many parts of the configuration of this embodiment are common to the first embodiment. Therefore, regarding the common configuration, in FIG. 2 showing the toner removing device of the second embodiment, the first embodiment is described.
1 will be denoted by the same reference numerals as those in FIG. 1, and description thereof will be omitted.

In the toner removing device according to the first embodiment, the peeling roller 35 and the backup roller 37 are respectively provided in three parts.
In contrast to the case where three pieces of peeling means are provided, only one peeling roller 35 and one backup roller 37 are provided to form a single peeling means in this embodiment. In the first embodiment, the upper pressure roller 51 and the lower pressure roller 5
2 and 3 are provided to form three pressing means, respectively, whereas in this embodiment, only one upper pressing roller 51 and one lower pressing roller 52 are provided, and a single pressing means is provided. It constitutes a pressure means. That is, in the first embodiment, a plurality of the peeling means and the pressing means are provided, whereas in this embodiment, the peeling means and the pressing means are single.

Further, in this embodiment, when the length of the sheet 10 in the conveying direction is L, from the position where the supporting roller 31a and the supporting roller 33a contact to the position where the peeling roller 35 and the backup roller 37 contact. Distance and. The distance from the position where the upper pressure roller 51 and the lower pressure roller 52 contact each other to the position where the support roller 31b and the support roller 33b contact each other is set to the length L.

Further, in this embodiment, a plate-shaped heater 70 which also functions as a conveyance guide plate is provided below the peeling belt 34.
a and 70b are provided.

The operation of the toner removing device of this embodiment will be described below. First, the liquid supply device 20 (not shown)
Supplies the processing liquid 21 to the lower surface of the paper 10. The paper 10 is conveyed rightward in FIG. 2 by the rotation of the pressing belt 32 and the peeling belt 34, and the peeling roller 3
The first peeling step is performed by 5 or the like. In this peeling process, the paper 10 is heated only by the heat from the heater 36 in the first embodiment, but in this embodiment, the paper 10 is also heated by the heat from the plate-shaped heater 70a. And
The sheet 10 that has been subjected to the first peeling process is conveyed to a position where the upper pressure roller 51 and the lower pressure roller 52 are in contact with each other, and the first pressure process is performed at the position. .

The rear end of the paper 10 in the conveying direction, that is, the left end of the paper 10 in FIG. 2 passes through the position where the upper pressure roller 51 and the lower pressure roller 52 are in contact with each other, and the entire surface of the paper 10 is covered. When the pressurizing process is performed, the pressing belt 32 and the peeling belt 34 start rotating in the opposite direction to the rotation direction up to then, and the sheet 10 is conveyed to the left in FIG. Then, when the right end portion of the sheet 10 passes through the position where the peeling roller 35 and the backup roller 37 are in contact with each other, the rotation directions of the pressing belt 32 and the peeling belt 34 are reversed again, and the sheet 10 is conveyed rightward. Is subjected to the second peeling process and the second pressurizing process while being conveyed to the right.

In this embodiment, by repeating the above operation, the peeling process and the pressurizing process are performed a desired number of times on the sheet 1.
Can be applied to zero.

As described above, in the first embodiment, a plurality of peeling rollers 35 and a plurality of backup rollers 37 are provided to form a plurality of peeling means, and each peeling means performs a peeling process once, so that the peeling process is performed a plurality of times. On the other hand, the single stripping means is configured in this embodiment, and the stripping processing is performed a plurality of times using this single stripping means. Further, in the first embodiment, the upper pressure roller 5
1 and a plurality of lower pressure rollers 52 are provided to configure a plurality of pressing means, and each pressing means performs a pressing process once to perform a plurality of peeling processes.
In this embodiment, there is a single pressurizing means, and the single pressurizing means is used to perform the pressurizing process a plurality of times.

In the toner removing device of this embodiment, the sheet 10 is conveyed at a conveying speed of 30 (mm / sec).
The amount of the treatment liquid supplied to the toner and the number of repeated peeling treatments were changed to try to remove the toner satisfactorily.
As a result, the supply amount of the processing liquid is 0.6 per A4 sheet.
If the number of gram or more and the number of peeling treatments is 3 or more,
It was confirmed that the toner was satisfactorily removed when the conveyance speed of the sheet 10 was set to 30 (mm / sec). Further, the apparatus of this embodiment can reduce the amount of the processing liquid that must be supplied at least as compared with the apparatus of the embodiment 1, and can supply the processing liquid of 0.6 g or more per A4 sheet. Therefore, it was confirmed that the toner peeling rate did not decrease and the fiber peeling did not become noticeable.

Example 3 Hereinafter, the present invention will be described with reference to a thermo-flexible ink (hereinafter, simply referred to as “image forming substance” which is composed of a fibrous material, at least a part of which is mainly composed of cellulose fiber, and which is a fibrous material. The third embodiment applied to an image forming substance removing device (hereinafter referred to as “toner removing device”) that removes the toner by peeling off the toner from a sheet serving as an image carrier on which a rough water-based image composed of (toner) is formed. Examples will be described. FIG. 3 is a front view showing a schematic configuration of the toner removing device according to this embodiment. In FIG. 3, the liquid applying device 20,
Illustration of the paper feed tray 80 and the paper feed tray 90 is omitted. Further, many parts of the configuration of this embodiment are common to the second embodiment. Therefore, regarding the common configuration, in FIG. 3 showing the toner removing device of the third embodiment, the second embodiment is described.
2, the same configurations as those in FIG. 2 are denoted by the same reference numerals, and the description thereof will be omitted.

In the toner removing device of the second embodiment, when the length of the sheet 10 in the transport direction is L, the support roller 31b and the support roller 31b are moved from the position where the upper pressure roller 51 and the lower pressure roller 52 are in contact with each other. The distance to the position where 33b contacts is set to the length L. On the other hand, in this embodiment, when the distance A is the distance from the position where the peeling roller 35 and the backup roller 37 are in contact to the position where the support roller 31b and the support roller 33b are in contact, the distance A is shorter than L. The distance is set to L / 4. In addition,
The distance from the position where the supporting roller 31a and the supporting roller 33a are in contact to the position where the peeling roller 35 and the backup roller 37 are in contact is the distance L as in the second embodiment.

Further, while the toner removing apparatus of the second embodiment is provided with the two plate heaters 70a and 70b, only the one plate heater 70a is provided in this embodiment.

The operation of this toner removing device will be described below. When the sheet 10 is repeatedly subjected to the peeling treatment and the pressure treatment, in the apparatus of the second embodiment, the entire surface of the paper 10 is subjected to the peeling treatment, and then the entire surface is subjected to the pressure treatment, and the area After performing a certain process on the entire surface of the sheet 10 such as a peeling process, the following process is performed. On the other hand, in this embodiment, the surface of the paper 10 is divided into L / A areas divided into the same length A as the distance A (hereinafter referred to as the length A), and the peeling process is performed in each area. The pressure treatment is repeated. That is, in this embodiment, since the length A is L / 4, the surface of the paper 10 is divided into four regions having a length L / 4, and the peeling process and the pressure treatment are repeatedly performed in this region. And apply.

The operation will be specifically described below. First, an area (from the right end portion to a position of a length L / 4 from the end portion) of the sheet 10 which is being fed by the liquid feeding device 20 (not shown) being conveyed rightward in FIG. Below, the first
The area) is subjected to a first peeling process by the peeling roller 35 or the like. Then, the sheet 10 that has been subjected to the peeling process is further conveyed to the right, and is moved to the first area at a position where the upper pressure roller 51 and the lower pressure roller 52 are in contact with each other.
A second pressurization process is performed. When the first peeling process for the first area is completed, that is, the left end of the area 1 is
When the position where the upper pressure roller 51 and the lower pressure roller 52 are in contact with each other is passed, the pressing belt 32 and the peeling belt 34 start rotating in the direction opposite to the rotation direction until then, and the paper 10
Is conveyed to the left in FIG. Then, when the right end portion of the sheet 10 passes the position where the peeling roller 35 and the backup roller 37 are in contact with each other, the pressing belt 32 and the peeling belt 3
The rotation direction of 4 is reversed again, the sheet 10 is conveyed to the right, and the first region of the sheet 10 is subjected to the second peeling process and the second pressing process during the rightward conveyance. It

By repeating the above operation, the paper 1
The first region of 0 can be subjected to the peeling treatment and the pressure treatment as many times as desired.

When the desired number of peeling processes and pressurizing processes on the first area are completed, the apparatus divides the recording paper 10 into four areas, that is, the second area, the third area, and the area. A peeling process and a pressure process are sequentially performed on the fourth region.

In the toner removing device of this embodiment, the sheet 10 is conveyed at a conveying speed of 30 (mm / sec).
It was tried to change the supply amount of the treatment liquid to the toner and the number of times of the peeling treatment repeated in the treatment of each region to satisfactorily remove the toner. As a result, the supply amount of the processing liquid is A4.
When the weight per sheet is 0.6 g or more and the number of peeling processes is 3 or more, the transport speed of the sheet 10 is 30 (mm
/ Sec), it was confirmed that the toner was satisfactorily removed.

In this embodiment, the surface of the paper 10 is divided into four areas, and the peeling process and the pressurizing process are repeated in this area. However, the number of divided areas is not four. I don't mind. (Hereinafter, margin)

Example 4 Hereinafter, the present invention will be described with reference to a thermo-flexible ink (hereinafter, simply referred to as “image forming substance” which is composed of a fibrous material, at least a part of which is mainly composed of a cellulose fiber, and which is a fibrous material. A fourth embodiment applied to an image forming substance removing device (hereinafter referred to as “toner removing device”) that removes the toner by peeling off the toner from a sheet as an image holding member on which a rough water-based image composed of (toner) is formed. Examples will be described. FIG. 4 is a front view showing a schematic configuration of the toner removing device according to this embodiment. In FIG. 4, the liquid applying device 20,
Illustration of the paper feed tray 80 and the paper feed tray 90 is omitted. Also, many parts of the configuration of this embodiment are common to the third embodiment. Therefore, regarding the common configuration, the third embodiment will be described with reference to FIG.
3, the same configuration as that of FIG. 3 is denoted by the same reference numeral, and description thereof will be omitted.

In the apparatus of the third embodiment, the holding belt 3
The peeling belt 34 is in contact with the entire area of the surface on the side facing the peeling belt 34. On the other hand, in this embodiment, the peeling belt 34 is provided only in a certain area of the pressing belt 32.
Contact with each other, and the peeling belt 3 on the surface of the pressing belt 32
The lower presser belt 56 is in contact with the area where 4 is not in contact. That is, in the toner removing device of this embodiment, the lower pressing belt 56 is stretched around the supporting rollers 55a and 55b, and the lower pressing belt 56 is attached so as to contact the pressing belt 32. The lower presser belt 56, like the presser belt 32, is made of a watertight sealing member.

Further, in the apparatus of the third embodiment, the peeling roller 35 was mounted while being pressed against the backup roller 37, whereas in this apparatus, the peeling roller 35 was pressed against the support roller 33b. It is installed in the state. In addition, in the apparatus of the third embodiment, the upper pressure roller 51 is mounted while being pressed against the lower pressure roller 52, whereas in this apparatus, the upper pressure roller 51 is attached to the support roller 55a. It is attached in the pressed state.

Further, in this apparatus, when the length of the sheet 10 in the conveying direction is L, the distance from the position where the supporting roller 31a and the supporting roller 33a contact to the position where the peeling roller 35 and the supporting roller 33b contact. It is set to the length L. Further, the distance from the position where the peeling roller 35 and the supporting roller 33b are in contact with the position where the supporting roller 31b and the supporting roller 55b are in contact (hereinafter, referred to as distance B) is L / 4.
Is set to

Also in this embodiment, as in the other embodiments, a cleaning device 40 for removing the toner adhering to the peeling belt 34 is provided, but the paper 10 on the surface of the peeling belt 34 is separated. The distance from the position where the cleaning is performed to the position where the surface is cleaned by the cleaning roller 42 is shorter than that in the other embodiments.

Further, although the apparatus of the third embodiment is equipped with a separating rod for separating the paper 10 from the peeling belt 34,
This device does not have a separating rod.

The structure other than the structure showing the difference is the same as the structure of the third embodiment. Therefore, Example 4
4 showing the toner removing device of No. 3, the same components as those in FIG. 3 showing the third embodiment are denoted by the same reference numerals as those in FIG. 3, and the description thereof will be omitted.

The operation of this embodiment will be described below. Most of the operation of this device is the same as that of the device of the third embodiment. That is, similar to the device of the third embodiment, this device divides the surface of the sheet 10 into L / B regions divided into the same length B as the distance B, and the peeling process and the pressure treatment in each region. And are repeated. Therefore, only the operation different from that of the device of the third embodiment will be described below.

In the apparatus of Example 3, the peeling belt 3
Separation of the sheet 10 from the sheet 4 was performed by a separating rod 38.
On the other hand, in this apparatus, the separation of the paper 10 from the peeling belt 34 is performed by the stiffness of the paper 10 as the peeling belt moves downward in FIG. 4 along the support roller 33b.

In the apparatus of the third embodiment, since the distance from the position where the paper 10 is separated on the surface of the peeling belt 34 to the position where the surface is cleaned by the cleaning roller 42 is short, the paper of the peeling material 34 is used. 10
The separated parts are cleaned immediately. Therefore, when the peeling process is repeated, the toner adhering to the peeling belt is removed every time the peeling process is performed, and the next peeling process is performed by using the peeling material 34 in the state where the toner is removed. Is done.

The paper 10 from which the toner was removed using the apparatus of this embodiment and the paper 10 from which the toner was removed using the apparatus of the embodiment 3 under the same conditions as the toner removal were compared. Paper 1 with toner removed using an example
It was confirmed that the toner removal of 0 was better. This is because when repeating the peeling process,
This is because the peeling material 34 in which toner is always removed is used in the apparatus of this embodiment.

[0065]

According to the inventions of claims 1 to 6,
Since the same image carrier is repeatedly subjected to the peeling treatment, the image remains on the image carrier even when the image forming substance such as a solid image is not removed and the poor image is removed. It is well removed. Further, since the same image carrier is repeatedly subjected to the pressure treatment, even if fiber peeling occurs on the image carrier, the fiber flaking can be satisfactorily resolved.

According to the third aspect of the invention, since only one stripping means and one pressing means need be provided, the device structure becomes simpler than the case where a plurality of them are provided, and the device is made smaller and manufactured. The cost can be reduced. Further, the number of heaters or the like provided for heating the image-forming substance during the peeling process can be smaller than that in the case where a plurality of peeling means are provided, so that energy consumption such as power consumption can be reduced. .

According to the invention of claim 4, in any peeling process, the peeling of the image forming substance from the image holding member is performed by the peeling member in a state where the image forming substance is not attached. Therefore, the peeling is performed particularly well. Further, there is no occurrence of reverse attachment of the image forming substance from the release material to the image carrier, which may occur when the release treatment is performed with the release material to which the image forming substance is attached.

According to the fifth aspect of the present invention, it is possible to prevent the water in the processing liquid from evaporating from the image holding member during the conveyance of the image holding member. There is no need to supply liquid to the image carrier. Therefore, it is possible to satisfactorily remove the image forming substance from the image carrier while minimizing the amount of the processing liquid used.

According to the sixth aspect of the present invention, like the fifth aspect of the present invention, water is prevented from evaporating from the image holding member, so a large amount of processing liquid that allows for evaporation is supplied to the image holding member. Therefore, the amount of the processing liquid used can be suppressed. Further, according to the invention of claim 6, the carrying means can be made smaller than the carrying means for carrying the distance L, so that the entire apparatus including the carrying means can be made compact. Further, according to the invention of claim 6, the evaporation of the water from the image carrier is prevented, and therefore the image carrier in which the water is evaporated is not repeatedly subjected to the peeling process. Therefore, the once peeled image-forming substance is prevented from reattaching to the image carrier due to lack of water, and the image-forming substance can be removed well.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a toner removing device according to a first embodiment.

FIG. 2 is a front view showing a schematic configuration of a toner removing device according to a second embodiment.

FIG. 3 is a front view showing a schematic configuration of a toner removing device according to a third embodiment. .

FIG. 4 is a front view showing a schematic configuration of a toner removing device according to a fourth embodiment. .

[Explanation of symbols]

 10 Paper 20 Liquid Applying Device 21 Processing Liquid 22 Liquid Container 30 Peeling Device 31 Support Roller 32 Holding Belt 33 Support Roller 34 Peeling Belt 35 Peeling Roller 36 Heater 37 Backup Roller 38 Separation Rod 40 Cleaning Device 41 Cleaning Roller 42 Heater 43 Blade 44 Recovery Case 50 Pressure device 51 Upper pressure roller 52 Lower pressure roller 55 Support roller 56 Lower presser belt 70 Plate heater 80 Paper feed tray 90 Paper discharge tray

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Kawakubo 1-3-6 Nakamagome, Ota-ku, Tokyo Within Ricoh Co., Ltd.

Claims (6)

[Claims] 1. A liquid supply process for supplying a processing liquid to an image carrier on which an image-forming substance is stably attached to a fibrous surface to reduce the adhesion between the surface and the image-forming substance. Liquid process,
The image forming substance on the surface of the image carrier subjected to the liquid supplying step is heated and a peeling member is pressure-bonded to the surface, and then the peeling member is separated from the surface to peel the image forming substance from the surface. An image forming substance removing method, comprising: a peeling step of performing a peeling process of: and a pressurizing step of applying a pressure to the image carrier subjected to the peeling step. An image forming substance removing method comprising repeating an image forming substance removing process including a pressure process a plurality of times. 2. A liquid supply treatment for supplying a treatment liquid to an image carrier having an image-forming substance stably attached to a fibrous surface to reduce adhesion between the surface and the image-forming substance. Liquid means,
The image forming substance on the surface of the image carrier, to which the processing liquid is supplied by the liquid supply means, is heated, and the first peeling member is pressure-bonded to the surface, and then the first peeling member is separated from the surface to form the surface. A first peeling means for peeling off the image forming substance from the first peeling means, and a first peeling treatment for pressing the surface of the image carrier from which the image forming substance has been peeled off by the first peeling means.
The pressing means and the second peeling member are pressure-bonded to the surface of the image carrier pressed by the first pressing means, and then the second peeling member is pressed.
Second peeling means for separating the peeling member from the surface to peel the image forming substance from the surface, and pressure for pressing the surface of the image carrier from which the image forming substance is peeled by the second peeling means. An image forming substance removing apparatus comprising: a second pressing unit that forms a step; and a conveying unit that conveys the image carrier in the apparatus main body. 3. A liquid supply process for supplying a processing liquid to an image carrier having an image-forming substance stably attached to a fibrous surface to reduce the adhesion between the image-forming substance and the surface. Liquid means,
The image forming substance on the surface of the image carrier supplied with the processing liquid by the liquid supply means is heated and a peeling member is pressed against the surface, and then the peeling member is separated from the surface to form the image from the surface. A single peeling means for performing a peeling treatment for peeling a substance; a single pressing means for performing a pressure treatment for pressing the surface of the image carrier from which the image forming substance has been peeled by the peeling means; An image forming substance removing device comprising: a conveying unit that conveys the image holding body pressurized by the peeling unit to the peeling unit, wherein the peeling unit performs plural peeling processes on the same image holding member. The image forming substance removing apparatus is characterized in that the pressure applying means applies a plurality of times of pressure processing to the same image carrier. 4. The image forming substance removing apparatus according to claim 3, further comprising a removing unit that removes the image forming substance attached to the peeling member each time the peeling process is performed. 5. The conveying means conveys the image holding member by sandwiching the image holding member between the sealing members formed of two sealing members that are in contact with each other and do not pass moisture. The image-forming substance removing device according to any one of claims 2 to 4. 6. The image carrier, which is held between the sealing means, which comprises two sealing members that are in contact with each other and does not allow moisture to pass therethrough, and the image carrier discharged from the peeling means. A distance A, which is a distance shorter than a length L of the image carrier in the carrying direction, and the peeling device is divided into a length A in the carrying direction of the image carrier.
The image forming substance removing apparatus according to claim 3, wherein the peeling process is performed a plurality of times for each of the A regions.