JPH10230201A - Liquid coating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent coating liquid from drying and sticking on the surface of a coating roller and enable the uniform application of coating liquid. SOLUTION: When applying coating liquid to a material 20 to be coated, a coating control part 2a controls the coating liquid on the surface of a coating roller 12 to a definite amount after passing a liquid quantity controlling member 13 and before the coating liquid is applied to the material 20 to be coated. A pressing roller 14 presses the material 20 against the coating roller 12 to apply the coating liquid on the surface of the coating roller 12 to the material 20. When the coating liquid is not applied to the material 20, the coating control part 2a separates the coating roller 12 from the liquid quantity controlling member 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid coating apparatus for applying a coating liquid to a film-shaped object using a coating roller, and more particularly to a liquid coating apparatus which prevents a coating liquid from drying and fixing to the coating roller surface. The purpose is to improve the uniformity of the amount of the coating liquid for the object to be coated.

[0002]

2. Description of the Related Art An image formed by an electrophotographic copying machine or a facsimile machine and an image formed by thermal transfer and hot-melt ink-jet are removed from a recording material to reproduce the recording material. Have been. For example, an image removal accelerating liquid, which is an aqueous solution containing a surfactant or the like, is applied to a recording material made of paper or the like, and a peeling member is heated and adhered to the surface of the recording material to which the image removal accelerating liquid is applied, which has an image formed material. The recording material is reproduced by pressure bonding and transferring the image forming substance to a peeling member. Here, the image removal accelerating liquid may be applied to a recording material before image formation.

[0003] As a liquid coating apparatus for applying a coating liquid to a film-like coating object such as applying an image removal accelerating liquid to the above-mentioned recording object, for example, a coating roller is used to apply a coating liquid to the surface of the coating roller from a coating liquid tank. 2. Description of the Related Art There is an apparatus that holds an application liquid, presses a film-shaped object to be applied to an application roller, and applies the application liquid on the surface of the application roller to the object.

In such a liquid coating apparatus, the coating liquid may be dried and fixed on the surface of the coating roller, or the coating liquid having a high concentration may be accumulated on the surface of the coating roller. If the coating liquid dries and adheres to the surface of the coating roller, the coating liquid may not be uniformly applied in some cases. On the other hand, for example, in a method for manufacturing an optical recording medium disclosed in Japanese Patent Application Laid-Open No. 4-64488, a coating liquid collected between a gravure roller and a doctor blade is removed by wiping off using a fluid, particularly a gas. Thus, the application liquid is prevented from accumulating between the gravure roller and the doctor blade, thereby preventing the occurrence of uneven application due to an increase in concentration.

[0005]

However, in the method of manufacturing an optical recording medium disclosed in Japanese Patent Application Laid-Open No. 4-64488, a fluid, especially a gas, is blown, so that the liquid scatters around and the surroundings become dirty.

[0006] In some cases, the coating solution is dried by spraying gas, and conversely adheres.

SUMMARY OF THE INVENTION The present invention has been made to solve such a disadvantage, and an object of the present invention is to prevent a coating liquid from drying and fixing, and to perform coating more reliably.

[0008]

A liquid application apparatus according to the present invention includes an application control unit, an application roller, a liquid amount limiting member, and a pressing roller. The part restricts the coating liquid on the surface of the coating roller to a certain amount after passing the liquid restriction member using the liquid restriction member and before applying the coating liquid to the object to be coated. When the process of applying the application liquid on the application roller surface to the application object by pressing the object against the application roller and not applying the application liquid to the application object is not performed, the application control unit controls the application roller and the liquid amount limiting member. To prevent the application liquid from remaining between the application roller and the liquid amount limiting member.

Further, the liquid coating apparatus has a pair of coating rollers and a coating control unit. Each coating roller holds a coating liquid from a coating liquid tank on its surface. When applying the coating liquid, the coating liquid is applied to the film-shaped coating object on the surface of each coating roller by sandwiching the coating object between a pair of coating rollers, and the coating liquid is applied to the coating object. When the application liquid is not present, the application rollers are separated from each other to prevent the application liquid from remaining between the pair of application rollers.

[0010] The liquid application device has an application control unit, an application roller, and a press roller. When the application liquid is applied to the object to be applied, the application control unit presses the press roller against the application roller, and The coating liquid from the coating liquid tank is held on the roller surface, and the press roller presses the film-shaped coating object onto the coating roller to apply the coating liquid on the coating roller surface to the coating object, and the coating liquid on the coating object. The coating control section separates the coating roller and the pressing roller when the coating process is not performed, thereby preventing the coating liquid from remaining between the coating roller and the pressing roller.

The liquid application device has an application control unit, an application roller, and a pressing roller. When the application liquid is applied to a film-shaped object to be applied, the application control unit places a lower part of the application roller in an application liquid tank. The application roller holds the application liquid from the application liquid tank on the roller surface, and the press roller presses the application object against the application roller to apply the application liquid on the application roller surface to the application object. When the process of applying the coating liquid to the coating liquid is not performed, the coating control unit separates the coating roller from the coating liquid in the coating liquid tank to prevent the coating roller from being constantly immersed in the coating liquid.

Further, the liquid application device has an application control unit, an application roller and a press roller, and when applying the application liquid to the film-shaped object to be applied, the application control unit places a lower part of the application roller in an application liquid tank. The coating roller holds the coating liquid from the coating liquid tank on the roller surface, and the pressing roller presses the object against the coating roller to remove the coating liquid from the coating roller surface. When applying to the object to be coated and not applying the coating liquid to the object to be coated,
The coating control unit separates the coating roller from the coating liquid in the coating liquid tank and presses the liquid absorbing member against the coating roller to apply the coating liquid to the object when the coating liquid is not being applied to the object to be coated. Wipe off.

Further, the liquid application device has an application control unit, an application roller, and a pressing roller. When applying the application liquid to the film-shaped object to be applied, the application control unit places a lower part of the application roller in an application liquid tank. The application roller holds the application liquid from the application liquid tank on the roller surface, and the press roller presses the application object against the application roller to apply the application liquid on the application roller surface to the application object. When the process of applying the coating liquid to the coating liquid is not performed, the coating control unit separates the coating roller from the coating liquid in the coating liquid tank, sucks the sound liquid on the coating roller surface, and applies the coating liquid to the object to be coated. The coating liquid is removed from the coating roller when the processing for applying the liquid is not performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid applying apparatus according to the present invention has an applying roller, a liquid amount limiting member, and a pressing roller. The applying roller holds an application liquid from an application liquid tank on its surface. After passing through the liquid amount limiting member and before applying the application liquid to the object, the amount of the application liquid on the surface of the application roller is limited to a constant amount, and the pressing roller presses the film-shaped object to the application roller. In a liquid coating apparatus for applying a coating liquid on a coating roller surface to an object to be coated, the coating liquid is prevented from drying and sticking to the coating roller surface, thereby preventing the coating liquid from being applied normally.

The liquid coating apparatus has, for example, a roll coater and a coating control unit. The roll coater includes, for example, a coating liquid tank, a coating roller, a liquid amount limiting member, and a pressing roller. The coating liquid tank holds a coating liquid to be applied to a film-shaped object to be coated. The application roller rotates while holding the application liquid from the application liquid tank on the roller surface. The liquid amount restricting member restricts the amount of the application liquid on the surface of the application roller after passing through the liquid amount restriction member and before applying the application liquid to the object to be applied to a constant amount. The pressing roller presses the object to be applied to the applying roller and applies the application liquid on the surface of the applying roller to the object.

When applying the coating liquid to the object to be coated, the coating control unit uses the liquid amount limiting member to control the surface of the coating roller after passing through the liquid amount limiting member and before applying the coating liquid to the object to be coated. The coating control unit is a part that separates the coating roller and the liquid amount limiting member when the processing of applying the coating liquid to the coating object is not performed while limiting the coating liquid to a constant amount. , A solenoid for controlling the liquid amount and a controller. Here, when the process of applying the coating liquid to the object to be coated is not performed, the case includes turning off the power or turning on the power. The object detection sensor outputs a detection signal indicating the presence or absence of the object to be applied with the application liquid. The solenoid for the liquid amount limiting member moves the liquid amount limiting member closer to a predetermined distance from the application roller or separates the liquid amount limiting member from the application roller according to the control from the controller. The controller determines whether or not to apply the application liquid to the object based on a signal from the object detection sensor. When applying the application liquid to the object to be applied, the controller controls the solenoid for the liquid amount restriction member to bring the liquid amount restriction member closer to a predetermined distance from the application roller. When the application liquid is not applied to the object, the controller controls the solenoid for the liquid amount limiting member to separate the liquid amount limiting member from the application roller. As described above, when the application liquid is not applied to the object to be applied, by separating the application roller and the liquid amount limiting member, it is possible to prevent the application liquid from remaining between the application roller and the liquid amount limiting member.

Here, in order to prevent the application liquid from remaining on the surface of the application roller when the liquid adhesion is prevented, for example, the application roller and the holding roller are separated when the liquid adhesion is prevented, or the application roller and the application liquid tank are prevented. The coating liquid may be separated from the coating liquid, a liquid absorbing member may be pressed against the coating roller, or the coating liquid on the coating roller surface may be sucked.

[0018]

FIG. 1 is a block diagram of a liquid coating apparatus according to the present invention. As shown in the figure, the liquid application device includes a roll coater 1.
And a coating control unit 2a. The roll coater 1 includes, for example, a coating liquid tank 11, a coating roller 12, a liquid amount limiting member 13, and a pressing roller 14. The coating liquid tank 11 holds a coating liquid 30 to be applied to the film-shaped object 20. The application roller 12 holds the application liquid 30 taken out of the application liquid tank 11 on the roller surface. The liquid amount restricting member 13 restricts the amount of the application liquid 30 on the surface of the application roller 12 after passing through the liquid amount restriction member 13 and before applying the application liquid 30 to the object 20. The pressing roller 14 presses the object 20 against the applying roller 12 to apply the coating liquid 30 on the surface of the applying roller 12.
Is applied to the object 20.

The coating control section 2a has, for example, a coating object detection sensor 21, a solenoid 22a for a liquid amount limiting member, and a controller 23a. The application object detection sensor 21 outputs a detection signal of the application object 20 to which the application liquid 30 is applied. The liquid amount limiting member solenoid 22a is connected to the controller 2
In accordance with the control from 3a, the liquid amount restricting member 13 is moved closer to a predetermined distance from the application roller 12, or the liquid amount restricting member 13 is separated from the application roller 12. The controller 23a determines whether or not to apply the application liquid 30 to the object 20 based on a signal from the object detection sensor 21. The controller 23a applies the coating liquid 3
When 0 is applied, the liquid amount limiting member solenoid 22a is controlled to bring the liquid amount limiting member 13 closer to a predetermined distance from the application roller 12. When the application liquid 30 is not applied to the object 20, the controller 23 a controls the liquid amount limiting member solenoid 22 a to control the liquid amount limiting member 13.
And the application roller 12 are separated. Thus, the object 2
When the coating liquid 30 is not applied to the coating roller 1, the coating roller 12 is separated from the liquid amount limiting member 13 so that the coating roller 1
The coating liquid 30 can be prevented from staying between the liquid 2 and the liquid amount limiting member 13. Since the coating liquid 30 does not stay between the application roller 12 and the liquid amount limiting member 13, it is possible to prevent the coating liquid 30 remaining between the application roller 12 and the liquid amount limiting member 13 from drying and fixing.

As shown in FIG. 2, the coating control unit 2b
May include, for example, an object detection sensor 21, a solenoid 22b for a pressing roller, and a controller 23b. The press roller solenoid 22b separates the press roller 14 from the application roller 12 or abuts the press roller 14 on the application roller 12 in accordance with control from the controller 23b. The controller 23b determines whether or not to apply the application liquid 30 to the object 20 based on a signal from the object detection sensor 21. Controller 2
3b controls the press roller solenoid 22b to apply the press liquid 14 to the application roller 12 when the application liquid 30 is applied to the object 20 to be coated. Also, the controller 23a
When the application liquid 30 is not applied to the object 20, the pressing roller solenoid 22 b is controlled to separate the pressing roller 14 from the application roller 12. As described above, the object 20
By separating the application roller 12 and the pressing roller 14 when the application liquid 30 is not applied to the coating liquid, it is possible to prevent the application liquid 30 from remaining between the application roller 12 and the pressing roller 14. Since the coating liquid 30 does not stay between the application roller 12 and the pressing roller 14, the coating liquid 30 remaining between the coating roller 12 and the pressing roller 14 can be prevented from drying and fixing.

As shown in FIG. 3, the coating control unit 2c
May include, for example, an object detection sensor 21, an application liquid tank solenoid 22c, and a controller 23c. The coating liquid tank solenoid 22c is connected to the controller 2
3c, the application liquid tank 11 is moved up and down to separate the application roller 12 from the application liquid 30 in the application liquid tank 11, or to move the lower part of the application roller 12 to the application liquid 30 in the application liquid tank 11. Or soak in The controller 23c determines whether or not to apply the application liquid 30 to the object 20 based on a signal from the object detection sensor 21. When applying the application liquid 30 to the object 20, the controller 23 c controls the application liquid tank solenoid 22 c to raise the application liquid tank 11, and the lower part of the application roller 12 is applied to the application liquid 30 in the application liquid tank 11. Soak. When the coating liquid 30 is not applied to the object 20, the controller 23 c controls the coating liquid tank solenoid 22 c to lower the coating liquid tank 11 so that the coating roller 12 and the coating liquid 30 in the coating liquid tank 11 are not coated. To avoid contact. As described above, when the application liquid 30 is not applied to the object 20, the application roller 12 and the application liquid tank 1
1 is separated from the application liquid 30 in the application roller 1.
2 can prevent the components of the coating liquid 30 from sticking to the surface of the coating liquid 30. Although the application liquid tank 11 is moved up and down in the figure, the application roller 12 may be moved up and down instead of moving the application liquid tank 11 up and down.

Further, as shown in FIG.
Are, for example, the object detection sensor 21, the liquid absorbing member 24,
A solenoid 22c for a coating liquid tank, a solenoid 22d for a liquid absorbing member, and a controller 23d may be provided. The liquid absorbing member 24 moves the coating liquid 3 from the surface of the coating roller 12.
It absorbs 0 and uses a porous material such as polyurethane. The liquid absorbing member solenoid 22d separates the liquid absorbing member 24 from the application roller 12 or abuts the liquid absorbing member 24 on the application roller 12 according to the control from the controller 23d. The controller 23d determines whether or not to apply the application liquid 30 to the object 20 based on a signal from the object detection sensor 21. When applying the coating liquid 30 to the object 20, the controller 23 d raises the coating liquid tank 11 by controlling the coating liquid tank solenoid 22 c, and the lower part of the coating roller 12 is applied to the coating liquid 30 in the coating liquid tank 11. The liquid absorbing member 24 and the application roller 12 are controlled by controlling the liquid absorbing member solenoid 22d.
To separate. Further, the controller 23 d
When the coating liquid 30 is not applied to the coating roller 1, the coating liquid tank 11 is lowered by controlling the coating liquid tank solenoid 22c.
2 and the coating liquid 30 in the coating liquid tank 11 are prevented from coming into contact with each other, and the liquid absorbing member 24 is brought into contact with the coating roller 12 by controlling the liquid absorbing member solenoid 22d. As described above, by applying the liquid absorbing member 24 to the application roller 12 when the application liquid 30 is not applied to the object 20, the application liquid 30 on the surface of the application roller 12 can be removed. Since the coating liquid 30 on the surface of the coating roller 12 is removed,
The coating liquid 30 can be prevented from drying and fixing on the surface of the coating roller 12.

Further, as shown in FIG.
May include, for example, an object detection sensor 21, a coating liquid tank solenoid 22c, a liquid absorbing member 24, a liquid absorbing member solenoid 22d, a pump 25, and a controller 23e. The pump 25 sucks the application liquid 30 on the surface of the application roller 12 under the control of the controller 23e. The controller 23e determines whether or not to apply the application liquid 30 to the object 20 based on a signal from the object detection sensor 21. The controller 23e is the object 2
When the application liquid 30 is applied to the application roller 1, the application liquid tank 11 is raised by controlling the application liquid tank solenoid 22c.
The lower portion 2 is immersed in the coating liquid 30 in the coating liquid tank 11, and the liquid absorbing member solenoid 22d is controlled to separate the liquid absorbing member 24 from the coating roller 12. When the application liquid 30 is not applied to the object 20, the controller 23 e controls the application liquid tank solenoid 22 c to control the application liquid tank 1.
1 so that the application roller 12 does not come into contact with the application liquid 30 in the application liquid tank 11, and the liquid absorption member 24 is controlled by controlling the liquid absorption member solenoid 22d.
2, the pump 25 is controlled to suck the application liquid 30 on the surface of the application roller 12. As described above, since the coating liquid 30 on the surface of the coating roller 12 is suctioned and removed when the coating liquid 30 is not applied to the object 20, the coating liquid 30 on the surface of the coating roller 12 is prevented from drying and fixing. it can.

Further, as shown in FIG. 6, for example, a coating control unit 2f may be provided in a liquid coating apparatus for coating a coating liquid on both surfaces of the object 20 as described above. The liquid application device is
For example, the coating liquid tanks 11a, 11b, the coating rollers 12a, 1
2b, a liquid amount limiting member 13a, 13b, and a coating control 2f. The coating liquid tanks 11a and 11b hold a coating liquid 30 to be coated on the object 20 by the coating rollers 12a and 12b, respectively. The application rollers 12a and 12b hold the application liquid 30 from the application liquid tanks 11a and 11b on the roller surfaces, apply the application liquid 20 to the object 20, and also function as pressing rollers. Liquid amount limiting members 13a, 13b
Is a coating roller 1 after passing the liquid amount limiting members 13a and 13b and before applying the coating liquid 30 to the object 20 to be coated.
The amount of the coating liquid 30 on the surfaces 2a and 12b is limited to a certain amount. Thus, the coating liquid 30 can be applied to both surfaces of the object 20 in the same manner.

The coating control unit 2f includes a coating object detection sensor 2
1. Application roller solenoids 26a, 26b, arm 2.
7a and 27b and a controller 23f. The application roller solenoids 26a and 26b are connected to the controller 23f.
The application rollers 12a and 12b are brought into contact with and separated from each other via the arms 27a and 27b in accordance with the control from.
When the controller 23f detects that the application liquid 30 is not applied to the object 20 based on the signal from the object detection sensor 21, the controller 23f applies the application roller solenoid 26.
a, 26b to separate the application rollers 12a, 12b from each other. When the controller 23f receives a detection signal of the object 20 from the object detection sensor 21,
The application roller solenoids 26a and 26b are controlled to bring the application rollers 12a and 12b into contact with each other. Thus, it is possible to prevent the application liquid 30 from staying between the application rollers 12a and 12b when preventing the liquid from sticking.

Further, the above configurations may be combined. When applying the application liquid, for example, as shown in FIG. 7A, the application roller 12 is applied to the application roller 12 while the liquid amount limiting member 13 and the pressing roller 14 are in contact with the application roller 12.
The lower part of 2 is immersed in the coating liquid 30 in the coating liquid tank 11, and the liquid absorbing member 24 is separated from the coating roller 12 to perform the coating operation normally. In the case of transfer, FIG.
(B) As shown in FIG.
3 and the pressing roller 14 are separated from each other, so that the application roller 12 is separated from the application liquid 30 in the application liquid tank 11 by the force of the spring 29, and the liquid absorbing member 24 is
2 to remove the application liquid 30 from the surface of the application roller 12.

Further, in the case of a liquid coating apparatus for applying a coating liquid to both surfaces of the coating object 20, for example, as shown in FIG. 8 (a), coating liquid tanks 11a and 11b, coating rollers 12a and 1
2b, liquid amount limiting members 13a, 13b, liquid absorbing member 24
a, 24b and brackets 32a, 32b. Here, when the brackets 32a and 32b are closed, the application rollers 12a and 12b
Since they are pressed against each other, they move in opposite directions and come into contact with the liquid amount limiting members 13a and 13b. At the time of transfer, FIG.
As shown in (b), the brackets 32a and 32b
The application rollers 12a and 12b are rotated about the reference numerals 1a and 31b in a direction separating the application rollers 12a and 12b from each other. Thereby, the spring 3
3a and 33b are opened, and the springs 33a and 33b are opened.
The liquid amount limiting members 13a and 13b are separated from the application rollers 12a and 12b by the force of. Further, the application rollers 12a,
12b separates from the coating liquid 30 in the coating liquid tanks 11a and 11b, and the liquid absorbing members 24a and 24b contact the coating rollers 12a and 12b. Thereby, the application roller 1
The coating liquid 30 can be reliably removed from the surfaces 2a and 12b.

Further, it is preferable to use any one of the above-mentioned liquid coating apparatuses for an image removal accelerating liquid pre-coating apparatus. The image-removal-promoting-liquid pre-applying device is a device that applies an image-removal-promoting liquid to a recording object (object to be coated 20) such as copy paper before image formation. Here, the image removal accelerating liquid is for facilitating separation of the image forming substance and the recording material, and is made of, for example, an aqueous solution containing a surfactant or the like. An image made of a thermoplastic or heat-meltable image forming substance is formed on a recording material after applying and drying the image removal accelerating liquid by using an electrophotographic copying machine or a facsimile machine, or thermal transfer or hot melt inkjet, etc. To form an image comprising a thermoplastic or heat-fusible image-forming substance. When reproducing the recording material, the peeling member is brought into contact with the recording surface of the recording material, and the heating and pressurizing process is performed to transfer the image forming substance from the recording material to the peeling member, and form the image from the recording material. Remove material. Here, if the image removal accelerating liquid is not uniformly applied to the recording material, the transfer of the image forming substance from the recording material may not be sufficiently performed, but by using the liquid coating device, The image removal accelerating liquid can be evenly applied, and the recorded material (the coated material 20) can be accurately reproduced.

Further, the above liquid application device may be used in an image removal accelerating liquid application device. The image removal accelerating liquid application device applies the image removal accelerating liquid to a recording material after image formation instead of applying the image removal accelerating liquid to a recording material (object 20) such as copy paper before image formation. And to facilitate separation of the image forming substance and the recording material.

(Specific Examples) Next, several specific examples in which a coating liquid is applied to an object to be coated using the above-described liquid coating apparatus will be described. Here, PPC paper was used as the coating object 20, and an image removal accelerating liquid in which a surfactant was mixed with water at 1% by weight was used as a coating liquid.

(Specific Example 1) The liquid coating apparatus shown in FIG. 1 was used. The object to be coated 20 is not subjected to the coating process for 3 minutes or more.
Was not detected, the liquid amount limiting member 13 was separated from the application roller 12. As a result, the image removal accelerating liquid could be stably and uniformly applied without drying and fixing of the image removal accelerating liquid on both the application roller 12 and the liquid amount limiting member 13. The image removing accelerating liquid can be uniformly applied to the PPC paper, and the peeling member is brought into contact with the recording surface of the PPC paper, and the heating and pressurizing treatment is performed.
The image forming substance was successfully removed from the paper.

(Specific Example 2) Using the liquid coating apparatus shown in FIG. 1, an image removal accelerating liquid was applied and dried, and then an image forming process and a PPC sheet regenerating process were performed. When the application object was not detected without performing the application processing for 3 minutes or more, the liquid amount limiting member 13 was separated from the application roller 12. As a result, the image removal accelerating liquid is not dried and fixed on both the application roller 12 and the liquid amount limiting member 13,
It was possible to stably and uniformly apply the image removal accelerating liquid. The image removal accelerating liquid was uniformly applied to the PPC paper, and the image forming substance was successfully removed from the PPC paper by the subsequent PPC paper regeneration processing following the image formation processing.

(Specific Example 3) The liquid coating apparatus shown in FIG. 2 was used. The object to be coated 20 is not subjected to the coating process for 3 minutes or more.
Was not detected, the press roller 14 was separated from the application roller 12. As a result, the image removing accelerating liquid could be stably and uniformly applied without drying and fixing of the image removing accelerating liquid on both the application roller 12 and the pressing roller 14. The image removing accelerating liquid can be uniformly applied to the PPC paper, and the peeling member is brought into contact with the recording surface of the PPC paper, and the heating and pressurizing treatment is performed, whereby the image forming substance can be removed from the PPC paper satisfactorily. did it.

(Specific Example 4) Using the liquid coating apparatus shown in FIG. 2, an image removal accelerating liquid was applied and dried, and then an image forming process and a PPC sheet reproducing process were performed. The pressing roller 14 was separated from the application roller 12 when the object 20 was not detected without performing the application processing for 3 minutes or more. As a result, the application roller 12 and the pressing roller 14
In both cases, the image removal accelerating solution could be stably and uniformly applied without drying and fixing of the image removal accelerating solution. The image removal accelerating liquid was uniformly applied to the PPC paper, and the image forming substance was successfully removed from the PPC paper by the subsequent PPC paper regeneration processing following the image formation processing.

(Specific Example 5) The liquid coating apparatus shown in FIG. 3 was used. When the power is turned off, the application roller 12
1 was separated from the coating solution 30. As a result, the image removal accelerating liquid does not dry and adhere to the application roller 12,
It was possible to stably and uniformly apply the image removal accelerating liquid. The image removal accelerating liquid can be uniformly applied to the PPC paper, and the release member is brought into contact with the recording surface of the PPC paper,
By performing the heating and pressurizing treatment, the image forming substance was successfully removed from the PPC paper.

(Specific Example 6) The liquid coating apparatus shown in FIG. 4 was used. Polyurethane was used as the liquid absorbing member 24.
When the power was turned off, the application roller 12 was separated from the application liquid 30 in the application liquid tank 11, and the liquid absorbing member 24 was brought into contact with the application roller 12 to remove the image removal accelerating liquid on the surface of the application roller 12. As a result, it was possible to stably and uniformly apply the image removal promoting liquid without drying and fixing of the image removal promoting liquid to the application roller 12. The image removing accelerating liquid can be uniformly applied to the PPC paper, and the peeling member is brought into contact with the recording surface of the PPC paper, and the heating and pressurizing treatment is performed, whereby the image forming substance can be removed from the PPC paper satisfactorily. did it.

(Specific Example 7) The liquid coating apparatus shown in FIG. 5 was used. When the power is turned off, the application roller 12
1 was separated from the coating liquid 30, and the pump 25 was used to suck the image removal accelerating liquid on the surface of the coating roller 12. As a result, it was possible to stably and uniformly apply the image removal promoting liquid without drying and fixing of the image removal promoting liquid to the application roller 12. The image removal accelerating liquid can be uniformly applied to the PPC paper, and the release member is brought into contact with the recording surface of the PPC paper, and the heating and pressurizing treatment is performed.
The image forming substance was successfully removed from the C paper.

(Specific Example 8) Using the liquid application apparatus shown in FIG. 7, an image removal accelerating liquid was applied and dried, and then an image forming process and a PPC sheet regenerating process were performed. Polyurethane was used as the liquid absorbing member 24. When the power supply of the apparatus is turned off, the liquid amount limiting member 13 and the pressing roller 14 are separated from the application roller 12, and the application roller 12 is separated from the application liquid 30 in the application liquid tank 11 by the force of the spring 29. The absorbing member 24 was brought into contact with the application roller 12 to remove the application liquid 30 from the surface of the application roller 12.
As a result, it was possible to stably and uniformly apply the image removal promoting liquid without drying and fixing of the image removal promoting liquid to the application roller 12. The image removal accelerating liquid was uniformly applied to the PPC paper, and the image forming substance was successfully removed from the PPC paper by the subsequent PPC paper regeneration processing following the image formation processing.

(Specific Example 9) The liquid coating apparatus shown in FIG. 8 was used. When the power supply of the apparatus is turned off, as shown in FIG.
2b rotates in a direction in which the application rollers 12a and 12b move away from each other. As a result, the spring 33 is released, and the liquid amount limiting members 13a, 13b are separated from the application rollers 12a, 12b by the force of the spring. Further, the application roller 12
a and 12b were separated from the coating liquid 30 in the coating liquid tanks 11a and 11b, and the liquid absorbing members 24a and 24b were in contact with the coating rollers 12a and 12b. Thus, the application liquid 30 was removed from the surfaces of the application rollers 12a and 12b. As a result, the image removal accelerating liquid could be stably and uniformly applied without drying and fixing of the image removal accelerating liquid to the application rollers 12a and 12b. Image removal promoting liquid PP
The CPC paper could be uniformly applied, and the image forming substance was successfully removed from the PPC paper by the subsequent reprocessing of the PPC paper.

As described above, when the application liquid 30 is not applied to the object 20, the application roller 12 is separated from the liquid amount limiting member 13, the application roller 12 is separated from the pressing roller 14, And the coating liquid 30 in the coating liquid tank 11
Or by pressing the liquid absorbing member 24 against the application roller 12 or sucking the application liquid on the surface of the application roller 12, the application liquid 30 dries, and the surface of the application roller 12 or the like is dried. Sticking can be prevented.

[0041]

As described above, according to the present invention, when the application liquid is not applied to the object to be coated, the application roller and the liquid amount restriction member are separated from each other, and the application liquid is applied between the application roller and the liquid amount restriction member. Since the liquid is prevented from remaining, it is possible to prevent the coating liquid from drying and sticking to the coating roller or the liquid amount limiting member.

In a device for applying a coating liquid to both surfaces of an object to be coated, when a coating liquid is not applied to the object to be coated, the pair of application rollers are separated from each other so that the application liquid remains between the pair of application rollers. Therefore, it is possible to prevent the coating liquid from drying and sticking to the coating roller.

Further, when the application liquid is not applied to the object, the application roller and the pressing roller are separated from each other to prevent the application liquid from remaining between the application roller and the pressing roller. And fixation to the application roller or the pressing roller.

When the application liquid is not applied to the object, the application roller is separated from the application liquid in the application liquid tank to prevent the application liquid from remaining on the application roller surface. The components of the coating solution can be prevented from sticking.

When the application liquid is not applied to the object, the application roller is separated from the application liquid in the application liquid tank and the liquid absorbing member is pressed against the application roller to apply the application liquid. Since the coating liquid is absorbed from the coating roller, it is possible to reliably prevent the coating liquid from drying and sticking to the coating roller.

When the application liquid is not applied to the object, the application roller is separated from the application liquid in the application liquid tank and the application liquid on the surface of the application roller is sucked to apply the application liquid. Since the application liquid at that time is sucked from the application roller, it is possible to more reliably prevent the application liquid from drying and sticking to the application roller.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an apparatus for separating a liquid amount limiting member.

FIG. 2 is a configuration diagram of a device that separates a pressing roller.

FIG. 3 is a configuration diagram of an apparatus for separating a coating liquid tank.

FIG. 4 is a configuration diagram of an apparatus for pressing a liquid absorbing member.

FIG. 5 is a configuration diagram of an apparatus for sucking a coating liquid.

FIG. 6 is a configuration diagram of an apparatus for processing both sides of a recording material in which application rollers are separated from each other.

FIG. 7 is a configuration diagram of an apparatus that removes an application liquid from an application roller.

FIG. 8 is a configuration diagram of an apparatus for processing both sides of a recorded matter for removing an application liquid from an application roller.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 roll coater 11 coating liquid tank 12 coating roller 13 liquid amount limiting member 14 holding roller 2 liquid sticking prevention part 21 applied object detection sensor 22a solenoid for liquid amount limiting member 22b solenoid for holding roller 22c solenoid for coating liquid tank 22d liquid absorption Solenoid for member 23 Controller 24 Liquid absorbing member 25 Pump 26 Solenoid for application roller 28 Solenoid for liquid amount limiting member 29 Spring 32 Bracket 33 Spring

Claims (6)

[Claims] An application control unit includes an application control unit, an application roller, a liquid amount limiting member, and a pressing roller. When applying an application liquid to a film-shaped application object, the application control unit uses the liquid amount restriction member to apply the liquid amount. After passing through the quantity limiting member and before applying the application liquid to the object to be applied, the application liquid on the surface of the application roller is limited to a certain amount, and the pressing roller presses the object against the application roller to apply the application liquid to the surface of the application roller. A liquid coating apparatus, wherein a coating control unit separates a coating roller and a liquid amount limiting member when a process of applying a liquid to a coating target and not applying a coating liquid to the coating target is performed. 2. A device comprising a pair of application rollers and an application control unit,
Each application roller holds the application liquid from the application liquid tank on the surface, and the application control unit sandwiches the application object with a pair of application rollers when applying the application liquid to the application object. A liquid coating apparatus, wherein a coating liquid on a surface is applied to a film-shaped object to be coated, and the application rollers are separated from each other when a process of applying the coating liquid to the object is not performed. 3. An application control unit, an application roller, and a press roller. When applying the application liquid to the object, the application control unit presses the press roller against the application roller, and the application roller applies the application liquid to the roller surface. The coating liquid from the tank is held, and the press roller presses the film-shaped coating object against the coating roller, applies the coating liquid on the coating roller surface to the coating object, and applies the coating liquid to the coating object. A liquid application device, wherein the application control unit separates the application roller and the press roller when the operation is not performed. 4. An application control section, an application roller, and a press roller, wherein when applying an application liquid to a film-shaped object, the application control section immerses a lower portion of the application roller in an application liquid tank,
The application roller holds the application liquid from the application liquid tank on the roller surface, and the holding roller presses the object to be applied to the application roller to apply the application liquid on the application roller surface to the object to be applied, and applies the application liquid to the object. A coating control unit that separates the coating roller from the coating liquid in the coating liquid tank when the processing for coating the coating liquid is not performed. 5. An application control section, an application roller, and a press roller, wherein when applying an application liquid to a film-shaped object to be applied, the application control section dips a lower portion of the application roller into an application liquid tank and applies the application roller. The coating roller holds the coating liquid from the coating liquid tank on the roller surface, and the pressing roller presses the coating object against the coating roller to apply the coating liquid on the coating roller surface to the coating object. The coating control unit separates the coating roller from the coating liquid in the coating liquid tank and presses the liquid absorbing member against the coating roller when the processing of applying the coating liquid to the object is not performed. Liquid applicator. 6. An application control unit, an application roller, and a press roller, wherein when applying an application liquid to a film-shaped object to be applied, the application control unit immerses a lower portion of the application roller in an application liquid tank,
The application roller holds the application liquid from the application liquid tank on the roller surface, and the holding roller presses the object to be applied to the application roller to apply the application liquid on the application roller surface to the object to be applied, and applies the application liquid to the object. A liquid application device wherein the application controller separates the application roller from the application liquid in the application liquid tank and sucks the sound liquid on the surface of the application roller when the application processing is not being performed.