JP2010179591A - Printer and printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer capable of forming a printing film having a desired film thickness and sharpness, and capable of thickening the film thickness of the printing film. <P>SOLUTION: This printer 1 includes a plate cylinder 7 formed with an image part for receiving a coating film 5, a coating film supply roller 9 for supplying the coating film 5 to the plate cylinder 7, and a slit coater 11 for applying the coating film 5 to the coating film supply roller 9. The coating film 5 received by the image part of the plate cylinder 7 is transferred to a glass substrate 3 to be printed. The printer transfers substantially all the quantities of the coating film 5 formed on the coating film supply roller 9 by the slit coater 11, the coating film 5 received from the coating film supply roller 9 to the image part of the plate cylinder 7, and the coating film 5 transferred from the plate cylinder 7 to the glass substrate 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a printing method and a printing method for forming a coating film having a desired film thickness.

  A printing method has been proposed as a technique for forming various patterns constituting a flat panel display such as a liquid crystal display, a plasma display, and an EL (Electro Luminescence) display on a flat glass substrate or ceramic substrate. The printing method is a promising method that enables mass production. For such printing, the film thickness accuracy of the printed film and the sharpness of the contour are required. However, in general letterpress printing method, it is not possible to avoid the stringing phenomenon of ink because it is divided transfer that transfers ink by dividing it without transferring all ink when transferring ink. The film thickness accuracy of the printed film and the sharpness of the contour cannot be ensured. In flexographic printing, which is one of the letterpress printing methods, an anilox roller with fine grooves on the ink receiving surface is used. However, the groove pattern remains on the surface of the printed film, and the smoothness of the printed film. Will be damaged.

  As a printing method for solving these drawbacks, reverse printing using a lithographic plate as shown in the following Patent Documents 1 to 3 is known. In this printing method, a flat plate on which a reverse pattern is formed on a flat table and a plate-shaped printing medium are installed, and the plate is formed on the printing plate from the ink applied to the outer peripheral surface of the transfer cylinder. The ink corresponding to the reversed pattern is removed, and the pattern remaining on the transfer cylinder is transferred onto the printing material to print the desired pattern.

Japanese Patent No. 3730002 Japanese Patent No. 3689536 JP 2004-249696 A

However, although the printing methods described in Patent Documents 1 to 3 are excellent in that a desired film thickness and sharpness are ensured, improvement in productivity and further increase in film thickness are required.
Further, it is necessary to further examine cleaning for removing the remaining coating film from the roller that supplies the coating film, and to establish a printing method that enables reliable and continuous production.

The present invention has been made in view of such circumstances, and is capable of forming a printing film having a desired film thickness and sharpness, and having a high productivity and capable of increasing the thickness of the printing film. An object is to provide a printing method.
It is another object of the present invention to provide a printing apparatus and a printing method for forming a printing film having a desired film thickness and sharpness and performing cleaning that enables reliable and continuous production.

In order to solve the above problems, the printing apparatus and printing method of the present invention employ the following means.
That is, a printing apparatus according to the present invention includes a plate cylinder on which an image portion that receives a coating film is formed, a coating film supply roller that supplies the coating film to the plate cylinder, and the coating film supply. A printing apparatus that coats a roller with a coating film, and transfers the coating film received by the image portion of the plate cylinder to a printing medium, and performs printing. A coating film formed on the coating film supply roller by a coating apparatus; a coating film received from the coating film supply roller to the image portion of the plate cylinder; and The coating film that has been transferred to is transferred substantially in its entirety.

The coating film applied by the coating apparatus was transferred almost entirely to the substrate. Thereby, since the film thickness of the printing film formed in a to-be-printed body can be determined with a coating device, the film thickness precision of a printing film can be maintained highly.
Since the coating film supply roller, which is a rotating body, is employed as an apparatus for supplying the coating film to the plate cylinder, the coating film can be continuously received by the plate cylinder, which is also the rotating body. Thereby, productivity can be improved.
Further, a plurality of layers of coating films can be formed on the plate cylinder by rotating the plate cylinder a plurality of times with respect to the coating film supply roller. Thereby, thickening of a printing film is realizable. In particular, since the coating film supply roller is cylindrical and the coating film is continuously supplied, a multilayer coating film can be formed with high productivity.
The adhesive strength when the coating film is transferred is set in the order of the substrate to be printed> the plate cylinder> the coating film supply roller. In addition, in order to ensure the sharpness of the contour of the printed film, properties such as the viscosity, plasticity, and fluidity of the coating material are adjusted so that the yarn drawing phenomenon does not occur. This is adjusted so that cracks are easily formed in the thickness direction of the coating film when the coating film is transferred to the plate cylinder.
As a material used for the surface of the plate cylinder or the coating film supply roller, for example, silicon resin or silicon rubber is used.
As the plate cylinder, a relief plate is preferably used, but a plate in which the image portion or the non-image portion is changed in adhesive strength to the coating material by laser treatment, ultraviolet (UV) treatment, or the like may be used.
Although it does not specifically limit as a material of a to-be-printed body, For example, a glass substrate, a resin substrate, a ceramic substrate, various films, a metal etc. are mentioned.
Examples of the coating material used for the “coating film” of the present invention include resins in which various functional materials such as pigments and conductive materials are mixed.
In the present invention, “substantially the entire amount of the coating film is transferred” means that the main part of the material to be formed after printing (for example, a solid portion) is transferred in its entirety. Of course, it also means that almost all of the moisture and volatile solvent in the coating material is transferred, but it is also acceptable if these solvents are left untransferred. In this way, it is distinguished from split transfer such as general letterpress printing in that the main part of the coating material is transferred in its entirety.

  Furthermore, the printing apparatus of the present invention includes a cleaning device that removes the coating film remaining on the coating film supply roller, and the cleaning device is formed on the coating film supply roller by the coating device. It is characterized in that substantially the entire amount of the coating film is removed.

The cleaning device removes substantially the entire amount of the coating film formed on the coating film supply roller by the coating device, and the cleaning is surely performed. Since a material having an adhesive strength equal to or higher than that of the plate cylinder may be used as the cleaning device, the device can be configured simply. Specifically, the same silicon material as that of the plate cylinder may be used, or an adhesive material having an adhesive strength higher than that may be used.
As the cleaning device, a roller shape may be used, or a mechanism for feeding a cleaning sheet to the coating film supply roller may be provided.

  Furthermore, in the printing apparatus of the present invention, the coating film supply roller supplies the coating film so as to be laminated on the plate cylinder.

Since the coating film is supplied by laminating the coating film on the plate cylinder by the coating film supply roller, it is possible to increase the thickness of the printing film printed on the printing medium. In particular, if the film thickness of the coating film to be transferred at one time is set to a film thickness that is thinner than the limit film thickness that can ensure the sharpness of the contour of the printed film, the thin film thickness is superposed to achieve excellent sharpness. It is possible to increase the thickness of the printed film.
For example, the coating film is laminated by rotating the plate cylinder a plurality of times with respect to the coating film supply roller.

  Furthermore, in the printing apparatus of the present invention, a plurality of coating film supply rollers are provided for one plate cylinder, and different types of coating films are formed on each coating film supply roller. Features.

  Since different types of coating films are formed on each coating film supply roller, a printing film in which different types of coating films are laminated can be formed in one printing process. Thereby, printed films having various functions can be formed. For example, a printing film in which a coating film containing a pigment and a conductive coating film are combined can be printed at a time.

  The printing method of the present invention also includes a plate cylinder on which an image portion for receiving a coating film is formed, a coating film supply roller that supplies the coating film to the plate cylinder, and the coating film supply roller. A printing method using a printing apparatus provided with a coating apparatus that coats a coating film on the plate, and transferring the coating film received in the image portion of the plate cylinder to a printing medium to perform printing. A coating film formed on the coating film supply roller by the coating apparatus; a coating film received from the coating film supply roller into the image portion of the plate cylinder; and from the plate cylinder The coating film transferred to the printing medium is transferred substantially in its entirety.

The coating film applied by the coating apparatus was transferred almost entirely to the substrate. Thereby, since the film thickness of the printing film formed in a to-be-printed body can be determined with a coating apparatus, the film thickness precision of a printing film can be maintained highly.
Since the coating film supply roller, which is a rotating body, is employed as an apparatus for supplying the coating film to the plate cylinder, the coating film can be continuously received by the plate cylinder, which is also the rotating body. Thereby, productivity can be improved.
Further, a plurality of layers of coating films can be formed on the plate cylinder by rotating the plate cylinder a plurality of times with respect to the coating film supply roller. Thereby, thickening of a printing film is realizable. In particular, since the coating film supply roller is cylindrical and the coating film is continuously supplied, a multilayer coating film can be formed with high productivity.
The adhesive strength when the coating film is transferred is set in the order of the substrate to be printed> the plate cylinder> the coating film supply roller. In addition, in order to ensure the sharpness of the contour of the printed film, properties such as the viscosity, plasticity, and fluidity of the coating material are adjusted so that the yarn drawing phenomenon does not occur. This is adjusted so that cracks are easily formed in the thickness direction of the coating film when the coating film is transferred to the plate cylinder.
As a material used for the surface of the plate cylinder or the coating film supply roller, for example, silicon resin or silicon rubber is used.
As the plate cylinder, a relief plate is preferably used, but a plate in which the image portion or the non-image portion is changed in adhesive strength to the coating material by laser treatment, ultraviolet (UV) treatment, or the like may be used.
Although it does not specifically limit as a material of a to-be-printed body, For example, a glass substrate, a resin substrate, a ceramic substrate, various films, a metal etc. are mentioned.
Examples of the coating material used for the “coating film” of the present invention include resins in which various functional materials such as pigments and conductive materials are mixed.
In the present invention, “substantially the entire amount of the coating film is transferred” means that the main part of the material (for example, a solid portion) to be formed after printing is transferred in the coating material. Of course, it also means that almost all of the moisture and volatile solvent in the coating material are transferred, but it is also acceptable if these solvents are left without being transferred. In this way, it is distinguished from split transfer such as general letterpress printing in that the main part of the coating material is transferred in its entirety.

  Furthermore, in the printing method of the present invention, the printing device includes a cleaning device that removes the coating film left on the coating film supply roller, and the cleaning device supplies the coating film by the coating device. It is characterized in that substantially the entire amount of the coating film formed on the roller is removed.

The cleaning device removes substantially the entire amount of the coating film formed on the coating film supply roller by the coating device, and the cleaning is surely performed. Since a material having an adhesive strength equal to or higher than that of the plate cylinder may be used as the cleaning device, the device can be configured simply. Specifically, the same silicon material as that of the plate cylinder may be used, or an adhesive material having an adhesive strength higher than that may be used.
As the cleaning device, a roller shape may be used, or a mechanism for feeding a cleaning sheet to the coating film supply roller may be provided.

  Furthermore, in the printing method of the present invention, the coating film is laminated on the plate cylinder by the coating film supply roller.

Since the coating film is supplied by laminating the coating film on the plate cylinder by the coating film supply roller, it is possible to increase the thickness of the printing film printed on the printing medium. In particular, if the film thickness of the coating film to be transferred at one time is set to a film thickness that is thinner than the limit film thickness that can ensure the sharpness of the contour of the printed film, the thin film thickness is superposed to achieve excellent sharpness. It is possible to increase the thickness of the printed film.
For example, the coating film is laminated by rotating the plate cylinder a plurality of times with respect to the coating film supply roller.

  Furthermore, in the printing method of the present invention, a plurality of coating film supply rollers are provided for one plate cylinder, and different types of coating films are formed on the plate cylinder by the plurality of coating film supply rollers. It is characterized by being laminated.

  Different types of coating films are formed on each coating film supply roller, and different types of coating films are stacked on the plate cylinder. Thereby, a printing film in which different types of films are laminated can be formed in one printing process. Thereby, printed films having various functions can be formed. For example, a printing film in which a coating film containing a pigment and a conductive coating film are combined can be printed at a time.

According to the present invention, it is possible to realize a printing apparatus and a printing method that can form a printing film having a desired film thickness and sharpness, and that can increase the printing film thickness with high productivity.
In addition, it is possible to realize a printing apparatus and a printing method for forming a printing film having a desired film thickness and sharpness and performing cleaning that enables reliable and continuous production.

1 is a schematic side view showing a printing apparatus according to a first embodiment of the present invention. FIG. 10 is a schematic side view illustrating another printing method using the printing apparatus of FIG. 1 according to the second embodiment of the present invention. It is the schematic side view which showed the printing apparatus concerning 3rd Embodiment of this invention. It is the side view which showed the printing film printed by the printing apparatus of FIG.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
FIG. 1 shows a schematic side view of a printing apparatus 1 according to the present embodiment.
The printing apparatus 1 includes a plate cylinder 7 that transfers a coating film 5 onto a glass substrate (printed body) 3, a coating film supply roller 9 that supplies the coating film 5 to the plate cylinder 7, and a coating A slit coater (coating device) 11 for applying the coating film 5 to the film supply roller 9 is provided. A cleaning roller (cleaning device) 13 for removing the remaining coating film 5 is provided on the side of the coating film supply roller 9.

The plate cylinder 7 includes a cylinder 15 and a printing plate 17 that is wound around and fixed to the outer peripheral surface of the cylinder 15. The cylinder 15 has a cylindrical shape that rotates about the center P1 as a center of rotation, and is made of, for example, metal. The printing plate 17 is a blanket made of silicon resin having irregularities formed on the surface. The convex portion (image portion) of the printing plate 17 becomes a region that receives the coating film 5, and the concave portion (non-image portion) formed around the convex portion becomes a region that does not accept the coating film 5. The surface of the convex portion of the printing plate 17 is a smooth surface without fine grooves or the like.
The plate cylinder 7 and the glass substrate 3 are moved relatively by a mechanism (not shown). That is, the plate cylinder 3 is configured to translate with respect to the glass substrate 3 whose position is fixed, or the glass substrate 3 is conveyed in the horizontal direction with respect to the plate cylinder 3 whose position is fixed. Of course, both the plate cylinder 7 and the glass substrate 3 may move.

  The coating film supply roller 9 has a cylindrical shape that rotates about the center P2 as a center of rotation, and has a configuration in which a silicon resin layer is provided on the outer surface. The outer surface of the coating film supply roller 9 is not provided with fine grooves or the like, unlike the anilox roller, and is a smooth surface. The coating film supply roller 9 is driven in synchronization with the rotation of the plate cylinder 7 by a mechanism (not shown).

  The slit coater 11 is provided above the coating film supply roller 9 in FIG. From the slit coater 11 to the coating film supply roller 9, inks of various colors R (red), G (green) and B (blue) of the liquid crystal color filter, black matrix, silver paste, etc. The conductive material, etching resist material, other functional resin, and the like are supplied. By adjusting parameters such as the gap (separation distance) between the slit coater 11 and the coating film supply roller 9, the supply speed of the coating material from the slit coater 11, the rotation speed of the coating film supply roller 9, etc. The film thickness of the coating film 5 formed on the outer surface of the film supply roller 9 is determined. As a method for controlling the supply speed of the coating material, for example, the discharge flow rate of the pump that supplies the coating material, the extrusion pressure in the case of the pressure feed type, the liquid surface height in the case of the gravity type, the capillary type In the case of (surface tension type), there are slit width and height, coating speed, and the like. As will be described later, the coating film 5 is transferred almost entirely to the glass substrate 3.

The cleaning roller 13 has a cylindrical shape that rotates about the center P3. The cleaning roller 13 is arranged on the downstream side in the rotation direction of the coating film supply roller 9 from the nip position between the coating film supply roller 9 and the plate cylinder 7. The cleaning roller 13 is driven in synchronization with the rotation of the coating film supply roller 9 by a mechanism (not shown). Note that the cleaning roller 13 may be rotated at a higher rotational speed than that of the coating film supply roller 9 to improve the cleaning performance.
The cleaning roller 13 has a material layer (for example, a silicon resin layer) having adhesiveness to the coating film 5 formed on the outer surface thereof, and the coating film left on the outer surface of the coating film supply roller 9. 5 is accepted.

The coating film 5 formed on the coating film supply roller 9 is transferred substantially in its entirety to the convex portion of the plate cylinder 7. The coating film 5 formed on the convex portion of the plate cylinder 7 is transferred substantially in its entirety with respect to the glass substrate 3. Thus, substantially the entire amount of the coating film 5 determined by the slit coater 11 is maintained up to the glass substrate 3.
Note that “substantially the entire amount of the coating film 5 is transferred” means that the entire material portion (for example, a solid portion) to be formed after printing is transferred in the coating material. Of course, it also means that almost all of the moisture and volatile solvent in the coating material are transferred, but it is also acceptable if these solvents are left without being transferred. In this way, it is distinguished from split transfer such as general letterpress printing in that the main part of the coating material is transferred in its entirety.

In order to realize such a transfer of the coating film 5, the adhesive strength at the time of transfer between the coating film 5 and the coating film supply roller 9, the plate cylinder 7 and the glass substrate 3 is as follows: glass substrate 3> plate cylinder 7> Coating film supply roller 9 is set in this order. This is because different types of silicone resin are used for the printing plate 17 of the plate cylinder 7 and the coating film supply roller 9, and the properties such as viscosity, plasticity, and fluidity of the coating material forming the coating film 5 are adjusted as appropriate. Is realized.
Further, in order to ensure the sharpness of the outline of the printing film, the coating film 5 is prevented so that the stringing phenomenon does not occur when the coating film 5 is transferred from the coating film supply roller 9 to the convex portion of the plate cylinder 7. The properties such as viscosity, plasticity, and fluidity are adjusted. This is adjusted so that cracks are easily formed in the thickness direction of the coating film 5 when the coating film 5 is transferred to the plate cylinder 7.

  The adhesive strength at the time of transfer between the cleaning roller 13 and the coating film 5 is set to be larger than the adhesive strength between the coating film supply roller 9 and the coating film 5. For example, the same type of silicon resin as the printing plate 17 of the plate cylinder 7 can be used. Of course, a material having an adhesive strength greater than that of the printing plate 17 may be used as the cleaning roller 13.

Next, the operation of the printing apparatus 1 having the above configuration will be described.
First, the coating film 5 is applied to the outer surface of the coating film supply roller 9 by the slit coater 11. At this time, the film thickness of the coating film 5 is set to a desired value of the film thickness during printing. That is, almost all of the coating film 5 is transferred, but water and solvent are volatilized and the film thickness is reduced in each process. Therefore, the film is formed so as to have a desired film thickness in consideration of the decrease in the film thickness. A coating film 5 having an adjusted thickness is formed.
The coating film supply roller 9 on which the coating film 5 is formed rotates counterclockwise in FIG. 1 and is formed on the convex portion formed on the printing plate 17 of the plate cylinder 7 at the nip position with the plate cylinder 7. The coating film 5 is transferred. At this time, the convex portion of the plate cylinder 7 is set to have a larger adhesive strength with the coating film 5 than the coating film supply roller 9. Therefore, almost all of the coating film 5 transferred from the coating film supply roller 9 to the plate cylinder 7 is transferred.

  The coating film 5 left on the coating film supply roller 9 is removed by the cleaning roller 13. The cleaning roller 13 is made of, for example, the same material as that of the printing plate 17 and has a higher adhesion strength to the coating film 5 than the coating film supply roller 9. Substantially all of the work film 5 is transferred.

The plate cylinder 7 rotates in synchronization with the coating film supply roller 9 in the clockwise direction in FIG. The coating film 5 received by the convex portion of the plate cylinder 7 is transferred to the surface of the glass substrate 3 that moves relatively. At this time, the glass substrate 3 is set to have a greater adhesive strength with the coating film 5 than the convex portion of the plate cylinder 7. Therefore, almost all of the coating film 5 transferred from the plate cylinder 7 to the glass substrate 3 is transferred.
In this way, the printing film of the coating film 5 is formed on the glass substrate 3, and printing is performed.

According to the printing apparatus 1 of this embodiment, there exist the following effects.
The coating film 5 applied by the slit coater 11 was transferred to substantially the entire amount up to the glass substrate 3. Thereby, since the film thickness of the printing film formed on the glass substrate 3 can be determined with the slit coater 11, the film thickness precision of a printing film can be maintained highly.

  Since the coating film supply roller 9 which is a rotating body is adopted as a device for supplying the coating film 5 to the plate cylinder 7, the coating film 5 is continuously received by the plate cylinder 7 which is also the rotating body. Can do. Thereby, productivity can be improved.

  The cleaning roller 13 removes the coating film 5 remaining on the coating film supply roller 9 by transferring almost the entire amount, so that the cleaning can be performed reliably. If a silicon resin having the same adhesive strength as that of the printing plate 15 of the plate cylinder 7 is used as the cleaning roller 13, the apparatus can be configured simply.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, the printing apparatus 1 described in the first embodiment is used to perform a printing method capable of increasing the film thickness. Therefore, the components of the printing apparatus 1 are denoted by the same reference numerals and description thereof is omitted.
In the present embodiment, after the coating films 51, 52, 53 are stacked on the plate cylinder 7, printing is performed on the glass substrate 3.
Specifically, first, the plate cylinder 7 is largely separated from the glass substrate 3, and the transfer of the coating films 51, 52, 53 made into a multilayer occurs between the glass substrate 3 and the plate cylinder 7. Let me not.
In the present embodiment, three layers of coating films 51, 52, and 53 are formed on the plate cylinder 7 by rotating the plate cylinder 7 three times. Thereafter, the plate cylinder 7 and the glass substrate 3 are brought close to each other to transfer the multilayered coating films 51, 52, 53 to the glass substrate 3.
Thus, in this embodiment, since printing was performed after forming a plurality of coating films 5 on the plate cylinder 7, it is possible to realize a thick print film. Particularly, since the coating film supply roller 9 is cylindrical and the coating film is continuously supplied, a multilayer coating film can be formed with high productivity.
Moreover, if the film thickness of the coating films 51, 52, and 53 to be transferred at one time is set to be smaller than the limit film thickness that can ensure the sharpness of the outline of the printed film, the thinner film thickness is overlapped. This makes it possible to increase the thickness of the printed film with excellent sharpness.
Note that, unlike the present embodiment, the diameter of the coating film supply roller 9 is not substantially equal to that of the plate cylinder 7, and the diameter of the coating film supply roller 9 is made larger than that of the plate cylinder 7 to supply the coating film. It is good also as a structure which can supply a coating film by making the roller 9 into small rotation amount.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the same printing apparatus 1 as that in the first embodiment is used. However, the difference is that two sets of slit coaters 11a and 11b and coating film supply rollers 9a and 9b are provided. Since it is the same about other structures, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
The printing apparatus 1 ′ of the present embodiment can perform different types of coating films 5a and 5b in a single printing process.

As shown in FIG. 3, two sets of coating film supply rollers 9 a and 9 b and slit coaters 11 a and 11 b are provided for one plate cylinder 7. Different types of coating films 5a and 5b are applied by the respective slit coaters 11a and 11b.
First, the first coating film 5a is supplied to the plate cylinder 7 via the first coating film supply roller 9a by the first slit coater 11a. Then, the second coating film 5b is supplied onto the first coating film 5a of the plate cylinder 7 via the second coating film supply roller 9b by the second slit coater 11b. In this way, as shown in FIG. 4, a printed film composed of the first coating film 5 a and the second coating film 5 b is formed on the glass substrate 3.

Since the second coating film 5b is located on the glass substrate 3 side, for example, black ink is used, and the first coating film 5a formed on the back surface of the second coating film 5b is a conductive material such as silver paste. be able to. Thereby, the printing film made multifunctional by one printing can be formed.
Moreover, since the slit coaters 11a and 11b are provided separately, the film thicknesses of the first coating film 5a and the second coating film 5b can be set respectively. Thereby, a desired film thickness can be formed according to the properties required for each coating film.

In addition, as a to-be-printed body of this invention, it is not limited to the glass substrate 3 shown to each embodiment mentioned above, Other printed bodies, such as a ceramic substrate, a resin substrate, various films, and a metal, may be sufficient.
In each of the above-described embodiments, a relief plate is used as the plate cylinder 7. However, the present invention is not limited to this. For example, an image portion and a non-image having different adhesive strengths with respect to a coating film. Any plate cylinder may be used if the part is formed on the surface. For example, the surface of the silicon material is modified by laser or ultraviolet light to change the adhesion strength to the coating material.
In each of the embodiments described above, silicon resin is used as the surface material of the plate cylinder 7, the coating film supply roller 9, and the cleaning roller 13. However, the present invention is not limited to this, and silicon is used. Other materials such as rubber may be used. That is, any material may be used as long as it has good adhesion to the coating film and is good in peeling. In addition, if there are minute irregularities on the outer surface of the roller, a non-contact portion with the coating film may occur and a remaining portion may occur. It is still preferable if it is.
The coating apparatus of the present invention is not limited to the slit coater 11 shown in each of the above-described embodiments, and other coating apparatuses such as a blade coater, a bar coater, and a capillary coater can be used.
In each of the above-described embodiments, the cleaning roller 13 is used as the cleaning device. However, the present invention is not limited to this. For example, instead of the cleaning roller 13, a mechanism for feeding a silicon sheet or an adhesive sheet to the coating film supply roller 9 may be provided.

1,1 'printing device 3 glass substrate (printed material)
5 Coating Film 7 Plate Cylinder 9 Coating Film Supply Roller 11 Slit Coater (Coating Device)
13 Cleaning roller (cleaning device)

Claims (8)

A plate cylinder on which an image part for receiving a coating film is formed;
A coating film supply roller for supplying a coating film to the plate cylinder;
A coating device for coating the coating film on the coating film supply roller;
With
A printing apparatus that performs printing by transferring the coating film received in the image portion of the plate cylinder to a printing body,
A coating film formed on the coating film supply roller by the coating apparatus; a coating film received on the image portion of the plate cylinder from the coating film supply roller; and the printing target from the plate cylinder A printing apparatus in which substantially all of the coating film transferred to the body is transferred. A cleaning device for removing the coating film left on the coating film supply roller;
The printing apparatus according to claim 1, wherein the cleaning device removes substantially the entire coating film formed on the coating film supply roller by the coating apparatus.   The printing apparatus according to claim 2, wherein the coating film supply roller supplies the coating film so as to be laminated on the plate cylinder. A plurality of coating film supply rollers are provided for one plate cylinder,
The printing apparatus according to claim 1, wherein different types of coating films are formed on each coating film supply roller. A plate cylinder on which an image part for receiving a coating film is formed;
A coating film supply roller for supplying a coating film to the plate cylinder;
A coating device for coating the coating film on the coating film supply roller;
Using a printing device equipped with
A printing method for performing printing by transferring a coating film received in the image portion of the plate cylinder to a printing body,
A coating film formed on the coating film supply roller by the coating apparatus; a coating film received on the image portion of the plate cylinder from the coating film supply roller; and the printing target from the plate cylinder A printing method characterized in that substantially all of the coating film transferred to the body is transferred. The printing apparatus includes a cleaning device that removes the coating film left on the coating film supply roller,
The printing method according to claim 5, wherein the cleaning device removes substantially the entire coating film formed on the coating film supply roller by the coating apparatus.   The printing method according to claim 5 or 6, wherein a coating film is laminated on the plate cylinder by the coating film supply roller. A plurality of coating film supply rollers are provided for one plate cylinder,
The printing method according to claim 5, wherein different types of coating films are laminated on the plate cylinder by the plurality of coating film supply rollers.

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