JP2015169840A - Method for manufacturing screen printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a screen printing plate, capable of reducing the number of steps than ever before.SOLUTION: A method for manufacturing a screen printing plate includes: a photosensitive material layer forming step of forming a photosensitive material layer 51 as a layer of an ultraviolet-curable type photosensitive material to a screen gauze 42; a printing step of applying print by an ultraviolet-curable ink 61 to a surface 51a of the photosensitive material layer 51 after the photosensitive material layer forming step; and a removing step of removing the ink 61 and the uncured photosensitive material from the screen gauze 42 after the printing step. The printing step includes hardening the ink 61 by adhering the ink 61 to a specific area 60a in the surface 51a of the photosensitive material layer 51 and irradiating ultraviolet rays, and hardening the photosensitive material by irradiating ultraviolet rays without adhering the ink 61 to an adjacent area 60b adjacent to the area 60a in the surface 51a of the photosensitive material layer 51.

Description

  The present invention relates to a method for producing a screen printing plate, which is a plate used for screen printing.

  Conventionally, as a method for producing a screen printing plate, a photosensitive material layer forming step of forming a photosensitive material layer, which is a layer of an ultraviolet curable photosensitive material that is cured by ultraviolet rays having a first wavelength, on a mesh-like medium; Then, after the photosensitive material layer forming step, an ultraviolet ray blocking layer is formed on the surface of the photosensitive material layer that transmits ultraviolet rays having the first wavelength and blocks ultraviolet rays having a second wavelength different from the first wavelength. A layer forming step, a pattern forming step for forming a specific pattern composed of an ultraviolet curable ink that is cured by ultraviolet rays of the second wavelength, on the surface of the ultraviolet blocking layer after the ultraviolet blocking layer forming step, and pattern formation After the step, an ink curing step of irradiating the second wavelength of ultraviolet light to cure the ink pattern formed on the surface of the ultraviolet blocking layer, and after the ink curing step, the photosensitive material layer An exposure step of curing the photosensitive material by irradiating ultraviolet rays of the first wavelength to cure the portion where the ink pattern is not formed on the surface via the ultraviolet blocking layer, and the ink after the exposure step In addition, a method including an ultraviolet blocking layer and a removing step of removing an uncured photosensitive material from a mesh-like medium is known (see Patent Document 1).

JP2012-118320A

  However, in the conventional method for producing a screen printing plate, there is a problem that the number of steps is large because ultraviolet rays of two kinds of wavelengths are irradiated.

  Therefore, an object of the present invention is to provide a method for producing a screen printing plate that can reduce the number of steps as compared with the prior art.

  The method for producing a screen printing plate of the present invention includes a photosensitive material layer forming step of forming a layer of an ultraviolet curable photosensitive material on a mesh-like medium, and after the photosensitive material layer forming step, A printing step of performing printing with ultraviolet curable ink on the surface; and a removing step of removing the ink and the uncured photosensitive material from the medium after the printing step, the printing step comprising: The ink is cured by attaching the ink to a specific area of the surface and irradiating ultraviolet rays, and the ink is adhered to an adjacent area of the surface adjacent to the specific area. In this step, the photosensitive material is cured by irradiating with ultraviolet rays.

  With this configuration, the method for producing a screen printing plate of the present invention allows the ink to adhere to the surface of the photosensitive material layer and the ink to harden, and the portion of the photosensitive material layer to which no ink is attached to the surface. Since both the curing and the curing are performed in the printing process, the number of processes can be reduced as compared with the prior art.

  In the screen printing plate manufacturing method of the present invention, the printing step is performed once in a specific direction with respect to the surface of the carriage on which the inkjet head for ejecting the ink and the ultraviolet irradiation device for irradiating ultraviolet rays are mounted. In the relative movement, the ink may be attached to the specific area by the inkjet head, and the attached ink may be irradiated with ultraviolet rays by the ultraviolet irradiation device.

  With this configuration, the screen printing plate manufacturing method of the present invention can immediately cure the ink adhered to the surface of the photosensitive material layer, so that the liquid state adhered to the surface of the photosensitive material layer Ink can be prevented from bleeding into the layer of the photosensitive material. Therefore, the screen printing plate manufacturing method of the present invention can manufacture a screen printing plate with high accuracy.

  In the screen printing plate manufacturing method of the present invention, the printing step may include the attachment of the ink by the inkjet head to the specific area and the relative movement of the carriage in a specific direction in a specific direction with respect to the surface. An operation may be included in which both the ultraviolet irradiation by the ultraviolet irradiation device and the ultraviolet irradiation by the ultraviolet irradiation device on the adjacent region are executed.

  With this configuration, the method for producing a screen printing plate according to the present invention allows the ink to adhere to the surface of the layer of the photosensitive material in one relative movement in a specific direction of the carriage with respect to the surface of the layer of the photosensitive material. Since both the curing of the ink and the portion of the photosensitive material layer where the ink is not attached are performed, the number of relative movements of the carriage with respect to the surface of the photosensitive material layer is suppressed. be able to. Therefore, the screen printing plate manufacturing method of the present invention can manufacture a screen printing plate in a short time.

  The method for producing a screen printing plate of the present invention can reduce the number of steps as compared with the conventional method.

It is an external appearance perspective view of the inkjet printer used for the screen printing plate manufacturing method which concerns on one embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS (a) is front sectional drawing of the flame | frame with a frame used in the screen printing plate manufacturing method which concerns on one embodiment of this invention. (B) is front sectional drawing of the photosensitive material adhesion flaw produced | generated when the photosensitive material layer formation process of a screen printing plate manufacturing method is applied with respect to the flaw with a frame shown to Fig.2 (a). . (A) is front sectional drawing of the photosensitive material adhesion flaw shown in FIG.2 (b) in the middle of the printing process of the screen printing plate manufacturing method being applied. (B) is a front sectional view of a pattern printed wrinkle generated by applying the printing process of the screen printing plate manufacturing method to the photosensitive material adhering wrinkle shown in FIG. 2 (b). It is front sectional drawing of the screen printing plate produced | generated when the removal process of the screen printing plate manufacturing method is applied with respect to the pattern printing finished pad shown in FIG.

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

  First, the configuration of an ink jet printer used in a method for producing a screen printing plate according to an embodiment of the present invention will be described.

  FIG. 1 is an external perspective view of an ink jet printer 10 used in the method for producing a screen printing plate according to the present embodiment.

  As shown in FIG. 1, the ink jet printer 10 includes a medium placement unit 20 on which a photosensitive material adhering rod 50 in which an ultraviolet curable photosensitive material is applied to a screen cage which is a mesh-like medium, And a main body 30 extending in the main scanning direction indicated by an arrow 10a.

  The medium placement unit 20 extends in the sub-scanning direction indicated by an arrow 10b orthogonal to the main scanning direction indicated by an arrow 10a and supports a rail 21 that supports the main body 30 so as to be movable in the sub-scanning direction. Provided at both ends.

  The main body 30 includes a guide rail 31 extending in the main scanning direction indicated by an arrow 10a, a carriage 32 supported by the guide rail 31 so as to be movable in the main scanning direction, and a medium mounted on the carriage 32. An inkjet head 33 that discharges an ultraviolet curable ink toward the photosensitive material adhering fountain 50 on the mounting unit 20 and an ultraviolet curable ink mounted on the carriage 32 and mounted on the photosensitive material adhering fountain 50. And an ultraviolet irradiation device 34 for irradiating ultraviolet rays.

  Next, the screen printing plate manufacturing method according to the present embodiment will be described.

(Photosensitive material layer forming process)
The photosensitive material layer forming step is a step of forming a photosensitive material layer which is a layer of an ultraviolet curable photosensitive material on the screen ridge.

  FIG. 2A is a front cross-sectional view of a framed ridge 40 used in the screen printing plate manufacturing method according to the present embodiment. FIG. 2B shows the photosensitivity generated by applying the photosensitive material layer forming step of the screen printing plate manufacturing method according to the present embodiment to the framed ridge 40 shown in FIG. 3 is a front sectional view of a material adhesion rod 50. FIG.

  First, as shown in FIG. 2A, the worker prepares a framed ridge 40 constituted by a frame 41 and a screen ridge 42 stretched on the frame 41. Then, as shown in FIG. 2 (b), the operator applies an ultraviolet curable photosensitive material to the screen rod 42 of the framed rod 40 to form a photosensitive material layer (hereinafter referred to as “photosensitive material”). By forming the layer 51), the photosensitive material deposit 50 is generated.

  Here, as the frame 41, for example, wood, metal, or the like can be used.

  Further, the screen ridge 42 is formed with a plurality of holes through which ink passes in screen printing. For example, the screen ridge 42 is produced by weaving materials such as fibers such as silk, nylon, and polyester, and wires such as stainless steel.

  Moreover, the film thickness of the photosensitive material layer 51 is 4-30 micrometers, for example. As the photosensitive material used for the photosensitive material layer 51, for example, a photosensitive emulsion in which a photosensitive agent and an emulsion are mixed can be used. The photosensitive emulsion may be aqueous or oily. As the oil emulsion, for example, a diazo emulsion or a resin emulsion can be used.

  In addition, as a specific example of the method of forming the photosensitive material layer 51 on the screen rod 42 of the frame rod 40, for example, after degreasing and cleaning the frame rod 40 with a cleaning solution, And a method in which a photosensitive emulsion mixed with an emulsion is coated on a screen tub 42 and then dried at 35 ° C. to 40 ° C.

(Printing process)
The printing process is a process in which the surface of the photosensitive material layer is printed with ultraviolet curable ink.

  FIG. 3A is a front cross-sectional view of the photosensitive material adhering bar 50 shown in FIG. 2B in the middle of applying the printing process of the screen printing plate manufacturing method according to the present embodiment. FIG. 3B shows a pattern printed wrinkle generated by applying the printing process of the screen printing plate manufacturing method according to the present embodiment to the photosensitive material adhering wrinkle 50 shown in FIG. FIG.

  After the photosensitive material layer forming step, the operator places a photosensitive material adhering rod 50 on the medium placement unit 20 of the inkjet printer 10 as shown in FIG. Then, as shown in FIG. 3A, the worker prints the surface 51 a of the photosensitive material layer 51 with the ultraviolet curable ink 61 using the inkjet printer 10. In FIG. 3A, the carriage 32 moves in the direction indicated by the arrow 10c in the main scanning direction indicated by the arrow 10a. When the printing process is completed, a pattern-printed bag 60 is generated as shown in FIG.

  In the printing with the ink 61 on the surface 51 a of the photosensitive material layer 51, the ink 61 was attached to the specific region 60 a in the surface 51 a of the photosensitive material layer 51 every time the ink jet head 33 was attached. By irradiating the ink 61 with ultraviolet rays by the ultraviolet irradiation device 34, the ink 61 attached to the region 60a is cured.

  Further, in the printing with the ink 61 on the surface 51a of the photosensitive material layer 51, the ink 61 is not attached to the adjacent region 60b adjacent to the region 60a in the surface 51a of the photosensitive material layer 51, and ultraviolet irradiation is performed. By irradiating the apparatus 34 with ultraviolet rays, the photosensitive material is cured to generate the cured portion 52.

  In printing with the ink 61 on the surface 51a of the photosensitive material layer 51, as shown in FIG. 3A, relative to the surface 51a of the photosensitive material layer 51 once in the direction indicated by the arrow 10c of the carriage 32. In this movement, the operation includes both the attachment of the ink 61 to the region 60a and the irradiation of the ultraviolet rays and the irradiation of the ultraviolet rays to the adjacent region 60b. Although the relative movement of the carriage 32 in the direction indicated by the arrow 10c with respect to the surface 51a of the photosensitive material layer 51 is described, what is the direction indicated by the arrow 10c of the carriage 32 with respect to the surface 51a of the photosensitive material layer 51? The same applies to the relative movement in the opposite direction. In the printing with the ink 61 on the surface 51 a of the photosensitive material layer 51, the relative position of the carriage 32 to the surface 51 a of the photosensitive material layer 51 out of the two ultraviolet irradiation devices 34 mounted on the carriage 32. An ultraviolet irradiation device 34 existing upstream of the inkjet head 33 in the moving direction is used.

(Removal process)
The removing step is a step of removing ink and uncured photosensitive material from the screen bottle.

  FIG. 4 is a front cross-sectional view of a screen printing plate 70 generated by applying the removing process of the screen printing plate manufacturing method according to the present embodiment to the pattern-printed trough 60 shown in FIG. It is.

  After the printing process, the operator immerses the pattern-printed paddle 60 in water, swells the uncured photosensitive material in the photosensitive material layer 51, and then unsensitizes the uncured photosensitive material in the photosensitive material layer 51. The sexual material is removed by washing the screen 61 together with the ink 61 with a water flow. By removing the ink 61 and the uncured photosensitive material from the pattern-printed basket 60, a screen printing plate 70 is generated as shown in FIG.

  Note that the ink 61 may be removed by peeling the pattern printed basket 60 from the pattern printed basket 60 before immersing it in water.

  In the screen printing plate 70, a hole 52a is formed in the portion that was the adjacent region 60b by the hardened portion 52. In screen printing, the ink having passed through both the hole 52a of the curing unit 52 and the hole of the screen ridge 42 of the screen printing plate 70 is attached to the print medium, thereby printing the same shape as the hole 52a. It can be applied to a medium.

  As described above, the method for producing a screen printing plate according to the present embodiment attaches the ink 61 to the surface 51 a of the photosensitive material layer 51 and cures the ink 61, and the surface of the photosensitive material layer 51. Since both the curing of the portion where the ink 61 does not adhere to 51a is performed in the printing process (see FIGS. 3A and 3B), the number of processes can be reduced as compared with the conventional method.

  In the screen printing plate manufacturing method according to the present embodiment, in one relative movement in one of the main scanning directions indicated by the arrow 10a of the carriage 32 with respect to the surface 51a of the photosensitive material layer 51, in the region 60a. On the other hand, since the ink 61 is attached by the inkjet head 33 and the attached ink 61 is irradiated with ultraviolet rays by the ultraviolet irradiation device 34 (see FIG. 3A), the surface of the photosensitive material layer 51 is included. The ink 61 adhered to the 51a can be cured immediately. Therefore, the screen printing plate manufacturing method according to the present embodiment can suppress the liquid ink 61 attached to the surface 51a of the photosensitive material layer 51 from bleeding into the photosensitive material layer 51, and the screen printing plate. 70 can be manufactured with high accuracy.

  The screen printing plate manufacturing method according to the present embodiment is described as follows: “In one relative movement in one of the main scanning directions indicated by the arrow 10a of the carriage 32 with respect to the surface 51a of the photosensitive material layer 51, A configuration other than “a configuration in which the ink 61 is attached to the region 60 a by the inkjet head 33 and the attached ink 61 is irradiated with ultraviolet rays by the ultraviolet irradiation device 34” may be adopted. For example, in the screen printing plate manufacturing method according to the present embodiment, the ink 61 adheres to the surface 51 a of the photosensitive material layer 51 and the ink 61 is cured, so that the carriage 32 is attached to the surface 51 a of the photosensitive material layer 51. The relative movement in the main scanning direction indicated by the arrow 10a may be executed separately.

  In the screen printing plate manufacturing method according to the present embodiment, the photosensitive material is used in one relative movement in one of the main scanning directions indicated by the arrow 10a of the carriage 32 with respect to the surface 51a of the photosensitive material layer 51. Both the adhesion of the ink 61 to the surface 51a of the layer 51 and the curing of the ink 61 and the curing of the portion of the photosensitive material layer 51 where the ink 61 does not adhere to the surface 51a are performed (FIG. 3A 3) and FIG. 3B), the number of relative movements of the carriage 32 with respect to the surface 51a of the photosensitive material layer 51 can be suppressed. Therefore, the screen printing plate manufacturing method according to the present embodiment can manufacture the screen printing plate 70 in a short time.

  The screen printing plate manufacturing method according to the present embodiment is described as follows: “In one relative movement in one of the main scanning directions indicated by the arrow 10a of the carriage 32 with respect to the surface 51a of the photosensitive material layer 51, Configuration for performing both adhesion of ink 61 to surface 51a of photosensitive material layer 51 and curing of ink 61 and curing of a portion of photosensitive material layer 51 where ink 61 is not adhered to surface 51a " Other configurations may be used. For example, in the screen printing plate manufacturing method according to the present embodiment, the ink 61 adheres to the surface 51a of the photosensitive material layer 51, and the ink 61 and the photosensitive material layer 51 are cured. The relative movement in the main scanning direction indicated by the arrow 10a of the carriage 32 with respect to the surface 51a may be executed separately.

  In the present embodiment, the inkjet printer 10 moves the inkjet head 33 in the sub-scanning direction relative to the surface 51a of the photosensitive material adhesion rod 50 by moving the inkjet head 33 in the sub-scanning direction indicated by the arrow 10b. Although it is the structure to move, structures other than this structure may be sufficient. For example, the inkjet printer 10 is configured to move the inkjet head 33 relative to the surface 51a of the photosensitive material adhesion rod 50 in the sub-scanning direction by conveying the photosensitive material adhesion rod 50 in the sub-scanning direction. May be.

32 Carriage 33 Inkjet head 34 Ultraviolet irradiation device 42 Screen cage (mesh-like medium)
51 Photosensitive material layer (photosensitive material layer)
51a surface 60a region (specific region)
60b Adjacent area 61 Ink 70 Screen printing plate

Claims (3)

A photosensitive material layer forming step of forming a layer of an ultraviolet curable photosensitive material on a mesh-like medium;
After the photosensitive material layer forming step, a printing step of performing printing with ultraviolet curable ink on the surface of the layer;
A step of removing the ink and the uncured photosensitive material from the medium after the printing step;
The printing process includes
While curing the ink by attaching the ink to a specific region of the surface and irradiating with ultraviolet rays,
A method for producing a screen printing plate, comprising a step of curing the photosensitive material by irradiating ultraviolet rays without adhering the ink to an adjacent region adjacent to the specific region of the surface.   In the printing process, in the relative movement in a specific direction with respect to the surface of the carriage on which the inkjet head that discharges the ink and the ultraviolet irradiation device that irradiates ultraviolet rays is mounted, the printing process is performed in the specific region. On the other hand, the method for producing a screen printing plate according to claim 1, further comprising an operation of attaching the ink by the inkjet head and irradiating the attached ink with ultraviolet rays by the ultraviolet irradiation device.   In the printing process, in one relative movement of the carriage in a specific direction with respect to the surface, the ink is attached to the specific region by the inkjet head, the ultraviolet irradiation is performed by the ultraviolet irradiation device, and the adjacent region. The method for producing a screen printing plate according to claim 2, further comprising an operation of performing both irradiation of ultraviolet rays by the ultraviolet irradiation device to a region.

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