JP2006247920A - Washing method of blanket and its washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing method of a blanket for efficiently removing the ink residue of the ink component on the surface of the blanket exerting a bad influence upon printing quality in a printing employing the blanket and the washing device of the blanket employing the method under the condition that the ink residue is easily removed without its re-adhesion to a printed matter, resulting in giving no bad influence upon printing quality. <P>SOLUTION: In the washing method for removing the ink component left on the blanket, for washing, an ink dissolving agent is supplied to the ink residue on the blanket, through its suitable amount of impregnation in the residue and the resultant partial or whole dissolution of the residue so as to recover the transferring properties to a transferring object of the surface of the ink residue in order to transfer the ink residue to the transferring object, resulting in removing the ink component left on the blanket. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for cleaning a blanket surface of a printing apparatus using a blanket, and a blanket cleaning apparatus attached in the vicinity of the blanket.

  Since a deposit such as an ink component is deposited on the blanket in printing using the blanket, it is required to remove the deposit to maintain the quality of the printed matter.

  For this reason, it is necessary to carry out maintenance work for removing the adhering deposit (hereinafter referred to as ink residue) while continuing the printing work or at the end of the printing work. It is necessary to take time and effort to wipe off the work, which causes inconveniences such as reducing the efficiency of the printing work.

  In order to automate the work of removing the ink residue, a method of wiping off the ink residue using a nonwoven fabric impregnated with a solvent, a method of removing the ink residue using an adhesive roller or an adhesive film, or rotation A method for removing ink residue by pressing a brush or the like has been devised, and an automatic apparatus has been developed (see Patent Document 1).

  However, in the wiping and removing method using the nonwoven fabric, fiber fragments generated from the nonwoven fabric become foreign matters. In the case of an adhesive roller, the adhesive roller or adhesive film peels and removes the adhesive roller due to the peeled ink residue, and the adhesive roller deteriorates. Become. In the scraping removal method using a rotating brush, scratches on the surface of the blanket due to friction of the brush, abrasion, and minute dust of ink residue peeled off by cleaning scatters to the surroundings, which causes a problem.

The known literature is described below.
Japanese Utility Model Publication No. 05-28636

  In the blanket printing method, the blanket with silicon rubber surface etc. remains on the blanket surface every time it is printed, and the ink residue of unnecessary ink components that lost transferability due to volatilization of the solvent component etc. There is a problem that the print quality is adversely affected by peeling off and adhering to the printed matter by an external force received during subsequent printing.

  An object of the present invention is to provide a blanket cleaning method or a blanket cleaning apparatus using the method for efficiently removing the ink residue of the ink component on the blanket surface which adversely affects the print quality as described above. The ink residue is easily removed, and the adverse effect on the printing quality is eliminated without reattaching to the printed matter.

The invention according to claim 1 of the present invention is a cleaning method for removing ink components remaining on a blanket in printing using the blanket, wherein the cleaning method removes the ink dissolving agent from the ink residue on the blanket. Supply, impregnate by a suitable amount, dissolve part or all of it, restore the transferability to the transfer object on the surface of the ink residue, and transfer it to the transfer object. A blanket cleaning method is characterized by removing residual ink components.

  The invention according to claim 2 of the present invention is characterized in that the method of supplying the ink dissolving agent supplies the ink dissolving agent to the entire surface of the blanket or only to a part selected arbitrarily. This is a cleaning method.

  The invention according to claim 3 of the present invention is the blanket cleaning method according to claim 1 or 2, wherein the ink dissolving agent supplying method is a system in which the ink dissolving agent is sprayed onto the blanket. is there.

  The invention according to claim 4 of the present invention is characterized in that the method of supplying the ink dissolving agent is a system in which the ink dissolving agent is sprayed onto the transfer object. This is a blanket cleaning method.

  The invention according to claim 5 of the present invention is characterized in that the method of supplying the ink dissolving agent is a method in which a transfer object is immersed in the ink dissolving agent and scraped off by a doctor blade with a suitable amount. The blanket cleaning method according to any one of claims 1 to 4.

  The invention according to claim 6 of the present invention is the blanket cleaning method according to any one of claims 1 to 5, wherein the transfer object is a cleaned resin film.

  The invention according to claim 7 of the present invention is the cleaning of the blanket according to any one of claims 1 to 5, wherein the transfer object is a cleaned metal foil or metal roller. Is the method.

  The invention according to claim 8 of the present invention is such that, after the transfer method presses an object to be transferred against a blanket, the residual ink holds a sealed state suitable for restoring transferability until a predetermined time. The blanket cleaning method according to any one of claims 1 to 7, wherein wasteful volatilization of the ink dissolving agent is suppressed and permeated into the residual ink to promote recovery of transferability.

  The invention according to claim 9 of the present invention is such that the transfer method applies a predetermined number of nip rollers and a predetermined nip pressure in contact with the transfer object after the transfer object is pressed against the blanket. The blanket cleaning method according to any one of claims 1 to 8, wherein the transfer of residual ink to an object to be transferred is promoted.

  In the invention according to claim 10 of the present invention, after the transfer method presses the object to be transferred against the blanket, the heating object is brought into contact with the object to be transferred or heated by blowing superheated temperature adjusting gas. The blanket cleaning method according to any one of claims 1 to 9, wherein the transfer of the residual ink to the transfer object is promoted by performing the step.

According to an eleventh aspect of the present invention, there is provided a blanket cleaning apparatus provided to remove an ink component remaining on a blanket provided in a printing apparatus using the blanket, which is supplied from a supply unit of a transfer object, A blanket cleaning apparatus for transferring an ink component remaining on a blanket to a transfer object to be recovered by an object recovery unit using the cleaning method according to any one of claims 1 to 9, wherein the transfer is performed upstream of the apparatus. Ink solubilizer so that the transfer object is brought close to the blanket at a position intermediate between the supply section of the object and a transfer object recovery section downstream thereof, and is opposed to the blanket at a position near the upstream of the intermediate position. A supply unit is arranged, and a transfer target cleaning unit for cleaning the transfer target is arranged between the transfer target supply unit and the ink dissolving agent supply unit, and the transfer target is cleaned. A blanket cleaning device in which a first nip roller, a second nip roller, and a third nip roller are arranged along the transfer object from the transfer part to the downstream transfer object recovery part. By spraying the dissolving agent onto the ink residue on the blanket, impregnating it by a suitable amount, dissolving part or all of it, moving the position of each nip roller to the position contacting the blanket, and transferring it to the transfer object A blanket cleaning apparatus that removes ink residues from a blanket.

  The invention according to claim 12 of the present invention is the blanket cleaning apparatus according to claim 11, wherein the ink dissolving agent supply unit supplies the entire surface of the blanket or an arbitrarily selected blanket. .

  The invention according to claim 13 of the present invention is the blanket cleaning apparatus according to claim 11 or 12, wherein the ink dissolving agent supply unit sprays the ink dissolving agent on the blanket.

  The invention according to claim 14 of the present invention is a system in which the cleaning unit for the transfer object sprays the ink dissolving agent on the transfer object. This is a blanket cleaning device.

  In the invention according to claim 15 of the present invention, the cleaning unit for the transfer target object immerses the transfer target object in an ink dissolving agent, and then scrapes the transfer target object by leaving a suitable amount by a doctor blade. The blanket cleaning apparatus according to claim 11, wherein an ink dissolving agent is supplied to the ink.

  The invention according to claim 16 of the present invention is the blanket cleaning apparatus according to any one of claims 11 to 15, wherein the transfer object cleaning unit cleans the transfer object. .

  The invention according to claim 17 of the present invention is any one of claims 11 to 16, wherein the transfer object is a cleaned resin film, metal foil, or metal roller. It is the blanket washing | cleaning apparatus of description.

  According to an eighteenth aspect of the present invention, after the first nip roller, the second nip roller, and the third nip roller press the object to be transferred against the blanket, each of the nip rollers moves to a position where it contacts the blanket. Then, by pressing the transfer object against the blanket and holding a predetermined distance, the residual ink is kept in a sealed state suitable for recovering transferability, and the solvent is wasted to the surrounding atmosphere. The blanket cleaning device according to any one of claims 11 to 17, wherein the blanket cleaning device suppresses, penetrates into the residual ink, and promotes the transfer of the residual ink to the transfer object.

  According to the nineteenth aspect of the present invention, after the first nip roller, the second nip roller, and the third nip roller press the object to be transferred against the blanket, each of the nip rollers moves to a position where it contacts the blanket. The transfer of the residual ink to the transfer object is promoted by pressing the transfer object onto the blanket and applying a predetermined number of nip rollers and a predetermined nip pressure. The blanket cleaning apparatus according to any one of 18.

According to a twentieth aspect of the present invention, the first nip roller, the second nip roller, and the third nip roller have a heating temperature adjusting function or a function of blowing superheated temperature adjusting gas, and a transfer object is placed on the blanket. After pressing, the position of each nip roller is moved to the position where it contacts the blanket, the transfer object is pressed against the blanket, and heated to the transfer object side by the heating function, thereby transferring the residual ink transfer object. The blanket cleaning device according to any one of claims 11 to 19, which promotes the transition to the above.

  In order to remove the residual ink component on the blanket surface, the blanket surface is cleaned by supplying and impregnating the ink dissolving agent to the residual ink component and transferring the ink component to the transfer object. The cleaning apparatus includes, as one example, a transfer object supply unit 10, a transfer object cleaning unit, an ink dissolving agent supply unit, a first nip roller, a second nip roller, and a third nip roller, A transfer object collection unit is provided.

  The present invention can provide a method and apparatus for efficiently and inexpensively removing residual ink components on the blanket surface that adversely affect print quality. For this purpose, an inexpensive ink dissolving agent is used, a part or all of the residual ink component is dissolved, transferability is restored, and the transfer is performed on the transfer object. Moreover, if the transfer object is an inexpensive consumable member such as a resin film, or a member that can be easily cleaned and used repeatedly, such as a metal foil or a metal roller, these can be used in the apparatus or in the apparatus. By regenerating outside, it can be a cheaper cleaning method. Furthermore, it is possible to increase the cleaning speed by applying heating to promote transfer of the residual ink component to the transfer object or applying a predetermined nip pressure, thereby further improving the cleaning efficiency. I can do it.

  FIG. 1 is a side sectional view for explaining the blanket cleaning apparatus of the present invention.

  FIG. 1 shows a blanket cleaning device 100 that is provided adjacent to and attached to the blanket 2 installed in the printing apparatus 4 using the blanket, and is an apparatus attached to remove ink residues of ink components remaining on the blanket 2. is there. The transfer object 300 is supplied from the transfer object supply unit 110 and recovered by the transfer object recovery unit 150. The transfer object is brought close to the blanket at a position intermediate between the transfer object supply unit 110 upstream of the apparatus and the transfer object recovery unit 150 downstream thereof, and is opposed to the blanket at a position near the upstream of the intermediate position. An ink solubilizer supply unit 130 is disposed, and a transfer target object cleaning unit 120 for cleaning the transfer target object is disposed between the transfer target object supply unit 110 and the ink solubilizer supply unit 130. The blanket cleaning apparatus 100 in which the first nip roller 141, the second nip roller 142, and the third nip roller 143 are arranged along the transfer object from the object cleaning unit 120 to the downstream transfer object recovery unit 150. is there. In the blanket cleaning apparatus 100, the ink dissolving agent is sprayed onto the ink residue on the blanket 2 by the ink dissolving agent supply unit 130, impregnated by a suitable amount, and part or all of the ink is dissolved, and the nip rollers 141, 142, 143, respectively. Is moved to a position in contact with the blanket 1 and transferred to the transfer object 300 to remove ink residue from the blanket 1.

  The ink dissolving agent supply unit is a method of spraying the entire blanket or an arbitrarily selected blanket, and the transfer object cleaning unit has a function of cleaning the transfer object, A method of spraying the ink dissolving agent onto the transfer object, or a method in which the transfer object is immersed in the ink dissolving agent and then scraped off by a doctor blade to leave a suitable amount. Is used to clean the transfer object. The transfer object is a resin film, a metal foil, or a metal roller. For example, in the case of a metal roller, it is a method in which a plurality of rollers are arranged in succession and contacted and transferred in that order.

After the first nip roller, the second nip roller, and the third nip roller press the object to be transferred to the blanket, the position of each nip roller is moved to a position that contacts the blanket, and the object to be transferred is pressed to the blanket. By holding a predetermined distance, the residual ink maintains a sealed state suitable for restoring transferability, so that it penetrates into the residual ink and promotes the transfer of the residual ink to the transfer object. be able to. For example, by moving the position of each nip roller to a position where it contacts the blanket, pressing the transfer object onto the blanket, and applying a predetermined number of nip rollers and a predetermined nip pressure, transfer of residual ink to the transfer object. Can be promoted. Further, the first nip roller, the second nip roller, and the third nip roller have a heating temperature adjustment function or a function of spraying a superheated temperature adjustment gas, and after pressing the transfer object on the blanket, Is moved to a position in contact with the blanket, and after the transfer object is pressed against the blanket, the transfer of residual ink to the transfer object is promoted by heating to the transfer object side by the heating function. it can.

  Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

  One embodiment described above will be described with reference to FIGS. 2, 3, and 4. FIG. 2 is a schematic diagram illustrating a cleaning apparatus according to one embodiment of the present invention.

  The cleaning apparatus of FIG. 2 will be described in detail below. The blanket cleaning apparatus is an embodiment in which a transfer object uses a film, and includes a film supply unit 10, a film cleaning unit 20, and an ink dissolving agent supply unit. 30, a first nip roller 41, a second nip roller 42, a third nip roller 43, and a film collection unit 50. Further, the ink dissolving agent supply unit 30, the first nip roller 41, the second nip roller 42, and the third nip roller 43 are arranged so as to be along the circumference of the blanket cylinder 1, and each part performs a cleaning process on the entire width of the blanket. It is wide enough. Further, a blanket 2 is wound around the outer periphery of the blanket cylinder 1, and residual ink adheres to this surface every time printing is performed. Further, in the present embodiment, the film 3 is a PET film having a 30 μm thickness whose surface is corona-treated, the ink solvent is an organic solvent, and the ink dissolving agent is also an organic solvent.

  The film supply unit 10 includes a film supply shaft 11, a winding exchange mechanism (not shown), a film connecting mechanism, a meandering prevention mechanism, a tension adjustment mechanism, a winding remaining amount detection mechanism, and a cutting detection mechanism.

  The film cleaning unit 20 has a brush cleaning mechanism, a film transport mechanism, and a static elimination mechanism for the film surface (not shown).

  In the present embodiment, the ink dissolving agent supply unit 30 is located most upstream with respect to the rotational direction of the blanket cylinder, and includes a not-shown dissolving agent pressurizing supply tank, an inert gas pressure adjusting supply valve, each foreign matter removing filter, A channel opening / closing valve is connected to the spray nozzle 31. The spray nozzle 31 is installed with a plurality of nozzles arranged in parallel to the blanket 2 in consideration of the overlay of spray patterns so that spraying can be performed uniformly in a sufficient range with respect to the blanket width. ing. The spray nozzle 31 is covered with a partition wall (not shown) for preventing unnecessary spray splashes from diffusing to the periphery, and this partition wall is connected to an exhaust device (not shown) via an exhaust path.

The first nip roller 41 is located immediately after the ink dissolving agent supply unit, and has a parallel adjustment mechanism, a nip pressure adjustment mechanism, and a release mechanism for the blanket cylinder 1 (not shown). Further, the transfer object is supported so as to be able to rotate while being pressed against the blanket cylinder, and the transfer object can also be detached from the blanket cylinder at the same time by a separation mechanism (not shown). There is no particular driving force for rotational driving because the film feeding tension supported by the surface of the first nip roller 41 is received by friction with the film.

  The second nip roller 42 has a parallel adjustment mechanism, a nip pressure adjustment mechanism, a release mechanism, and a roller heating temperature adjustment mechanism with respect to the blanket cylinder 1 (not shown). Further, the transfer object is supported so as to be able to rotate while being pressed against the blanket cylinder, and the transfer object can also be detached from the blanket cylinder at the same time by a separation mechanism (not shown). Further, the second nip roller 42 is configured by a plurality of numbers necessary for obtaining suitable conditions, and these operate uniformly. Further, the second nip roller 42 receives a heated heat medium whose temperature is adjusted from a not-shown heated heat medium supply device, and passes the heated heat medium through a flow path provided therein, thereby maintaining its own surface at a desired temperature. It is possible.

  The third nip roller 43 has a parallel adjustment mechanism, a nip pressure adjustment mechanism, a separation mechanism, and a roller heating temperature adjustment mechanism with respect to the blanket cylinder 1 (not shown). Further, the transfer object is supported so as to be able to rotate while being pressed against the blanket cylinder, and the transfer object can also be detached from the blanket cylinder at the same time by a separation mechanism (not shown). Further, the third nip roller 43 receives a cooling heat medium whose temperature is controlled from a constant temperature liquid supply device (not shown), and allows the third nip roller 43 to pass through a flow path provided therein, thereby maintaining its own surface at a desired temperature. Is possible.

  The film recovery unit 50 includes a film recovery shaft 51, a winding replacement mechanism (not shown), a meandering prevention mechanism, a tension adjustment mechanism, a winding remaining amount detection mechanism, and a cutting detection mechanism.

  Next, a cleaning operation in the cleaning apparatus having the above-described configuration will be described.

  The cleaning device before the cleaning operation is attached in the vicinity of the blanket in the following state as shown in FIG. First, after the film 3 as a transfer object is unwound from the film supply shaft 11 of the film supply unit 10 and cleaned by the film cleaning unit 20, the circumferential direction of the blanket cylinder is approximately along the outer periphery of the first nip roller. Has been led to. Here, during the non-cleaning operation, the first nip roller 41, the second nip roller 42, and the third nip roller 43 are separated from the blanket 2, and all of the above, including the film 3, is included in the blanket 2. It is in the state which is not contacting (refer FIG. 2).

  Next, the film 3 is guided in the circumferential direction of the blanket cylinder 1 along the first nip roller 41, and then reaches the outer periphery of the third nip roller 43 without contacting the second nip roller 42. Here, the film 3 does not come into contact with the second nip roller 42 because the film 3 held at an arbitrary tension during non-cleaning is positioned on a tangent line connecting the outer circumferences of the first nip roller 41 and the third nip roller 43. On the other hand, the second nip roller 42 is in a position retracted to the opposite side of the blanket cylinder 1 from the tangent line. Thereby, at the time of non-cleaning, by suppressing the heat of the second nip roller 42 from propagating to the film 3 when it is not necessary, it is possible to eliminate problems caused by a decrease in the elastic modulus of the film due to heating.

  The film 3 separated from the circumferential direction of the blanket cylinder 1 along the third nip roller 43 reaches the film collection unit 50 and is collected by being wound around the film collection shaft 51 at one end.

Next, a cleaning operation performed after a series of printing operations will be described. The blanket cylinder 1 on which printing has been completed is positioned at an arbitrary cleaning start angle, and the blanket cylinder 1 is rotated as shown in FIG. In this case, the blanket cylinder 1 needs to be rotated at a peripheral speed at which a suitable amount of the ink dissolving agent is supplied to the blanket, and this peripheral speed is determined in the subsequent process. A common peripheral speed is also used for the dissolution of the ink and the transfer to the film.

  Next, when the portion of the film 3 where the supply of the ink dissolving agent has passed between the first nip roller 41 and the blanket 2, the first nip roller 41 moves in the blanket direction and is pressed against the blanket 2. As a result, a part of the film 3 is brought into close contact with the outer periphery of the blanket 2, and thereafter, the film 3 is sequentially pressed against the blanket 2 by the first nip roller 41 and is brought into close contact with the blanket 2. As described above, the portion where the film 3 is first pressed against the blanket 2 is the cleaning start position (see FIG. 3).

  As described above, the blanket 2 in which the ink dissolving agent is sequentially supplied to the surface by the spray nozzle 31 of the ink dissolving agent supply unit 30 is pressed against the film by the first nip roller 41 to be sealed. The ink dissolving agent is impregnated into the ink component that remains on the blanket 2 and accumulates, and gradually dissolves it. Further, the second nip roller 42 constituted by a plurality of rollers moves sequentially to the blanket 2 as the portion where the supply of the ink dissolving agent of the film 3 in close contact with the blanket starts passing between each roller and the blanket 2. As a result, the residual ink component on the blanket 2 is impregnated with the ink dissolving agent, and the application of a nip pressure suitable for the transfer of the residual ink is applied to the part where the dissolution is gradually progressing, and heating is applied to the film 3 The transfer to the film 3 and the fixing can be promoted. In addition, the portion where the supply of the ink dissolving agent starts moving sequentially as it passes between each roller and the blanket 2, thereby causing a transfer inhibition factor such as air mixing between the blanket 2 and the film 3. It is necessary to prevent this from occurring.

  The film 3 that has passed through the second nip roller 42 is directed to the third nip roller 43. Similar to the operation of the second nip roller, the portion of the film 3 that has been in close contact with the blanket that has started supplying the ink dissolving agent is the third nip roller. The third nip roller moves in the direction of the blanket when passing between 43 and the blanket 2 and is pressed against the blanket 2, whereby the film 3 moves along the third nip roller 43, and the circumference of the blanket cylinder 1 In the direction, that is, detached from the blanket 2, it is sent to the film collecting unit 50, wound around the film collecting shaft 51 and collected. When the film is fed from the film supply unit 10 to the film cleaning unit 20 and from the third nip roller 43 to the film collection unit 50, the above-described meandering prevention mechanism and tension adjustment mechanism (not shown) may cause misalignment or slack. Correctly guided (see FIG. 4).

  The cleaning operation is continued for an arbitrary time until the residual ink component within the range of the surface of the blanket 2 affecting the quality in printing is removed to a desired extent or completely, in other words, the blanket cylinder 1 is 1 The process is completed during the rotation or a plurality of rotations. When the cleaning is completed, each part of the cleaning device returns to the standby state as shown in FIG. 2 and waits.

It is the schematic which shows the blanket cleaning apparatus of this invention, and is a sectional side view which shows a positional relationship. It is the schematic which shows the washing | cleaning apparatus according to one embodiment of this invention, and is a figure which shows the positional relationship of each part in the standby state before washing | cleaning operation | movement. It is the schematic which shows the washing | cleaning apparatus according to one embodiment of this invention, and is a figure which shows operation | movement of the washing | cleaning apparatus at the time of a washing | cleaning start, and the positional relationship of each part. It is the schematic which shows the washing | cleaning apparatus according to one embodiment of this invention, and is a figure which shows the operation | movement of the washing | cleaning apparatus in the washing | cleaning process, and the positional relationship of each part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Blanket cylinder 2 ... Blanket 3 ... Film 4 ... Printing apparatus 10 using blanket ... Film supply part 11 ... Film supply shaft 20 ... Film washing | cleaning part 30 ... Ink-dissolving agent supply part 31 ... Outlet nozzle 41 ... 1st nip roller 42 2nd nip roller 43 3rd nip roller 50 Film recovery unit 51 Film recovery shaft 100 Blanket cleaning device 110 Transfer object supply unit 111 Transfer object supply shaft 120 Transfer object cleaning unit 130 Ink Solvent supply unit 131 ... blowing nozzle 141 ... first nip roller 142 ... second nip roller 143 ... third nip roller 150 ... transfer object recovery unit 151 ... transfer object recovery shaft 300 ... transfer object

Claims (20)

  In printing using a blanket, a cleaning method for removing ink components remaining on the blanket, wherein the cleaning method supplies an ink dissolving agent to the ink residue on the blanket and impregnates it by a suitable amount. It is characterized by recovering the transferability to the transfer object on the surface of the ink residue by dissolving a part or all, and removing the ink component remaining on the blanket by transferring to the transfer object. How to clean the blanket.   2. The blanket cleaning method according to claim 1, wherein the ink dissolving agent is supplied to the entire surface of the blanket or only to a part selected arbitrarily.   3. The blanket cleaning method according to claim 1, wherein the ink dissolving agent is supplied by spraying the ink dissolving agent onto the blanket.   4. The blanket cleaning method according to claim 1, wherein the ink dissolving agent is supplied by spraying the ink dissolving agent onto a transfer object.   5. The ink dissolving agent supply method according to claim 1, wherein the transfer object is dipped in the ink dissolving agent and scraped off by a doctor blade. The blanket cleaning method described.   6. The blanket cleaning method according to claim 1, wherein the transfer object is a cleaned resin film.   The blanket cleaning method according to any one of claims 1 to 5, wherein the transfer object is a cleaned metal foil or metal roller.   After the transfer method presses the object to be transferred against the blanket, the residual ink holds a sealed state suitable for restoring transferability until a predetermined time, thereby suppressing unnecessary volatilization of the ink dissolving agent. The method for cleaning a blanket according to any one of claims 1 to 7, wherein the residual ink is permeated to promote recovery of transferability.   In the transfer method, after the transfer object is pressed against the blanket, the residual ink is transferred to the transfer object by applying a predetermined number of nip rollers and a predetermined nip pressure in contact with the transfer object. The blanket cleaning method according to claim 1, wherein the blanket cleaning method is promoted.   In the transfer method, after the transfer object is pressed against the blanket, a heating temperature adjusting roller is brought into contact with the transfer object, or heating is performed by blowing superheated temperature adjusting gas, thereby transferring the residual ink transfer object. 10. The blanket cleaning method according to any one of claims 1 to 9, which promotes the transition to the surface. In the blanket cleaning device attached to remove the ink component remaining on the blanket equipped in the printing device using the blanket, it is supplied from the transfer object supply unit, and is transferred to the transfer object collected by the transfer object recovery unit. A blanket cleaning apparatus for transferring an ink component remaining on a blanket using the cleaning method according to any one of claims 1 to 9, comprising a supply unit for a transfer object upstream of the apparatus and a transfer object downstream thereof. Supply the transfer object by placing the transfer object close to the blanket at an intermediate position of the object recovery section, and disposing an ink dissolving agent supply section facing the blanket at a position near the upstream of the intermediate position. The transfer object cleaning unit for cleaning the transfer object is arranged between the transfer part and the ink dissolving agent supply unit, and the transfer object is collected downstream from the transfer object cleaning unit. Until the transfer object, the first nip roller, the second nip roller, and the third nip roller are arranged in the blanket cleaning device, and the ink dissolving agent is sprayed to the ink residue on the blanket by the ink dissolving agent supply unit. The ink residue is removed from the blanket by impregnating it in a suitable amount, dissolving a part or all of it, moving the position of each nip roller to the position where it contacts the blanket, and transferring it to the transfer object. Blanket cleaning device.   The blanket cleaning apparatus according to claim 11, wherein the ink dissolving agent supply unit supplies the entire surface of the blanket or an arbitrarily selected blanket.   The blanket cleaning apparatus according to claim 11 or 12, wherein the ink dissolving agent supply unit is a system in which the ink dissolving agent is sprayed onto the blanket.   The blanket cleaning apparatus according to any one of claims 11 to 13, wherein the transfer object cleaning unit sprays the ink dissolving agent onto the transfer object.   In the method of supplying the ink dissolving agent to the transfer object, the cleaning part of the transfer object is immersed in the ink dissolving agent and scraped off by a doctor blade later with a suitable amount. The blanket cleaning apparatus according to claim 11, wherein there is a blanket cleaning apparatus.   The blanket cleaning apparatus according to claim 11, wherein the transfer object cleaning unit cleans the transfer object.   The blanket cleaning apparatus according to any one of claims 11 to 16, wherein the transfer object is a cleaned resin film, metal foil, or metal roller.   After the first nip roller, the second nip roller, and the third nip roller press the object to be transferred to the blanket, the position of each nip roller is moved to a position that contacts the blanket, and the object to be transferred is pressed to the blanket. By holding a predetermined distance, the residual ink maintains a sealed state suitable for restoring transferability, thereby suppressing wasteful volatilization of the dissolving agent into the surrounding atmosphere and penetrating into the residual ink. The blanket cleaning apparatus according to any one of claims 11 to 17, wherein transfer of residual ink to an object to be transferred is promoted.   After the first nip roller, the second nip roller, and the third nip roller press the object to be transferred to the blanket, the position of each nip roller is moved to a position that contacts the blanket, and the object to be transferred is pressed to the blanket. 19. The blanket cleaning apparatus according to claim 11, wherein the transfer of the residual ink to the transfer object is promoted by applying a predetermined number of nip rollers and a predetermined nip pressure. .   The first nip roller, the second nip roller, and the third nip roller have a heating temperature adjustment function or a function of spraying a superheated temperature adjustment gas, and after pressing the transfer object onto the blanket, each position of the nip roller is set to the blanket. It is moved to the position where it touches, and the transfer object is pressed against the blanket and heated to the transfer object side by the heating function, thereby promoting the transfer of residual ink to the transfer object. The blanket cleaning apparatus according to any one of claims 11 to 19.

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