JP2015131456A - Manufacturing method of screen printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a screen printing plate capable of suppressing an equipment cost to the minimum and easily performing stable manufacture of a screen printing plate.SOLUTION: A screen plate in which a mesh screen 2 is stretched on a plate frame 4 and, on the other hand, a photosensitive resin layer is not formed on both surfaces (sign 2a, 2b) of the mesh screen 2 is placed on a predetermined position of a base 14 of an inkjet printer 10, a photo-setting ink 3 is ejected toward the surface (sign 2a) of such a side that the mesh screen 2 is not opposite to the print frame 4 from a printing head 12 of the inkjet printer 10, an opposite position is moved while performing the plotting on the mesh screen 2, light is applied from a photo-irradiation lamp 13 of an inkjet printer 10 and the photo-setting ink 3 of the mesh screen 2 is cured to make a screen printing plate 1.

Description

  The present invention relates to a method for producing a screen printing plate.

  Screen printing is also referred to as silk printing, and is a printing method in which ink is transferred to a printing material through holes in the mesh screen by a squeegee or the like using a screen printing plate in which a mesh screen is stretched and drawn on a plate frame. Screen printing is suitable for industrial production because it can be printed on a variety of media such as printed circuit boards, substrates for liquid crystal displays, stationery, sports equipment, T-shirts, ceramics, signs, posters, stickers, sheets, signs, flags, etc. Widely used.

  In general, a screen printing plate is formed by applying a photosensitive emulsion to a mesh screen to form a photosensitive resin layer, and exposing and developing a negative film or a positive film that has been photoengraved in close contact with the mesh screen as a photomask, It becomes a screen printing version.

  However, many steps are required to manufacture the photomask. For this reason, a method of manufacturing a screen printing plate that omits the process of manufacturing the photomask has been proposed.

  Patent Document 1 relates to a method for producing a screen printing plate, and prepares a screen plate provided with a screen stretched on a rectangular frame and a photosensitive resin layer formed on one surface of the screen, the same as the frame. A plurality of support plates having different thicknesses and lengths are prepared as support plates having thicknesses and lengths that can be accommodated in the frame, and the screen plate has a surface on which the photosensitive resin layer is not formed facing upward. In order to prevent the sagging of the screen placed on a flat mounting surface, at least one support plate is sandwiched between the screen and the mounting surface in the frame of the screen plate, In this state, an image is printed with light-shielding ink on the surface of the screen where the photosensitive resin layer is not formed using an ink jet printer. From the side of the made the surface by exposing the photosensitive resin layer, to transfer the image to the photosensitive resin layer (the claim 1), is described.

  Patent Document 2 relates to a method for producing a screen printing plate, a step of bonding a water-soluble sheet and a screen printing mesh, forming a predetermined pattern with ultraviolet curable ink from the screen printing mesh side, and irradiating with ultraviolet rays. The method includes a step of curing the ultraviolet curable ink, and a step of removing the water-soluble sheet after curing the ultraviolet curable ink (claim 1) and using an ultraviolet curable ink jet printer. Item 3) is described.

  Patent Document 3 relates to a method for producing a screen printing plate, and a release layer having a thickness of 3 to 100 μm made of a resin selected from PVB resin, PVA resin, and cellulosic resin that can be peeled from the substrate is provided on the substrate. A process of superimposing and pasting the sheet and the screen printing mesh on each other by thermocompression bonding, and a process of forming a predetermined pattern with the ultraviolet curable ink from the screen printing mesh side and irradiating the ultraviolet ray to cure the ultraviolet curable ink And a step of removing excess resin remaining on the screen printing mesh by rinsing with water after the ultraviolet curable ink is cured and then the substrate is peeled off (claim 1), an ultraviolet curable inkjet printer Is used (claim 3).

Japanese Patent No. 3990233 Japanese Patent No. 4538592 Japanese Patent No. 5119537

  However, although the method for producing a screen printing plate described in Patent Documents 1 to 3 does not require the photomask, a process of forming a photosensitive resin layer by applying a photosensitive emulsion to a mesh screen, and the photosensitive resin layer A step of exposing and developing the film is essential. For this reason, equipment for forming a photosensitive resin layer by coating a photosensitive emulsion on a mesh screen and equipment for exposing and developing the photosensitive resin layer are still necessary, and these equipment costs and equipment space are burdened. In addition, the environmental load is increased by consuming a large amount of chemicals such as a developing solution and a cleaning solution.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a screen printing plate capable of easily producing a stable screen printing plate while minimizing the equipment cost.

  In the method for producing a screen printing plate of the present invention, a screen plate in which a mesh screen is stretched on a plate frame but a photosensitive resin layer is not formed on both sides of the mesh screen is placed at a predetermined position on a base of an inkjet printer. And moving the relative position while discharging the photocurable ink from the print head of the ink jet printer toward the surface of the mesh screen that is not opposed to the plate frame and drawing on the mesh screen. A screen printing plate is obtained by irradiating light from a light irradiation lamp of an ink jet printer and curing the photocurable ink of the mesh screen.

  According to the present invention, the manufacturing process can be simplified because there is no need for equipment for forming a photosensitive resin layer by coating a photosensitive emulsion on a mesh screen and equipment for exposing and developing the photosensitive resin layer. In addition, environmental load is reduced because chemicals such as developer and cleaning liquid are not consumed. That is, according to the present invention, since drawing is performed by inkjet on a screen plate in which the photosensitive resin layer is not formed on both sides of the mesh screen, forming the photosensitive resin layer by coating a photosensitive emulsion on the mesh screen itself. Therefore, stable drawing work can be easily performed. And since the photocurable ink of the said mesh screen is hardened while drawing, a screen printing plate can be finished in a short time.

The mesh screen is made of a synthetic fiber or a metal thread fabric. Examples of synthetic fibers include nylon, polyester, and composite fibers thereof. By being a woven fabric made of synthetic fibers of thermoplastic resin, it is easy to make fraying difficult. When drawing workability is taken into consideration, colors such as yellow, white, and red are selected. Yellow is preferable because it facilitates light to travel straight. The mesh screen may be a natural color. The color of the mesh screen may appear transparent or translucent in appearance.
The thickness, mesh account, wire diameter, opening, and other standards of the mesh screen are appropriately set according to the substrate, printing ink, and other printing conditions.

  The plate frame is generally made of a metal such as aluminum or stainless steel, but may be a wooden plate frame. The shape of the plate frame is generally a square frame, but may be a polygonal frame or a round frame. As the screen plate, a known screen plate is applied.

  As the photocurable ink, a known photocurable ink for inkjet printing is applied. As the color of the photocurable ink, in consideration of drawing discrimination, a color different from the color of the mesh screen is selected, and colors such as black, red, blue, and green are selected. Black is preferable because the edges of the image can be easily distinguished. The color of the photocurable ink may be the same as the color of the mesh screen.

  The present invention is characterized in that the photocurable ink is an ultraviolet curable ink and the light irradiation lamp is an ultraviolet irradiation lamp.

  According to the present invention, a screen printing plate can be finished in a shorter time by curing with an ultraviolet irradiation lamp provided in the ink jet printer while drawing using an ultraviolet curable ink excellent in quick drying.

  The work of curing while drawing on the mesh screen may be performed once or may be repeated a plurality of times.

  The present invention is characterized in that the work of curing while drawing on the mesh screen is repeated a plurality of times.

  According to the present invention, it is easy to increase the film thickness by the drawing.

  In the present invention, the surface of the mesh screen that is not opposed to the plate frame is an A surface, and a water repellent sheet is in contact with the B surface opposite to the A surface while drawing on the A surface. It is characterized by being cured.

  According to the present invention, it is possible to prevent the photocurable ink from dripping from the opposite side of the drawn surface.

  Examples of the material of the water repellent sheet include silicone, fluororesin, and polypropylene. By arranging a sponge, a resin block, a wooden block, a metal block, or the like under the water repellent sheet, it is more reliable to bring the water repellent sheet into contact with the mesh screen. As the water-repellent sheet, a so-called release sheet or release film can be used.

  In the present invention, the mesh screen is drawn on the A surface in a state where the surface not facing the plate frame is an A surface and an adhesive film is adhered to the B surface opposite to the A surface. It is made to harden | cure while peeling the said adhesive film after that.

  Examples of the material for the adhesive film include polypropylene and polyethylene.

  According to the present invention, the photocurable ink does not go around to the opposite side of the drawn surface, and the film thickness can be easily reduced.

  The method for producing a screen printing plate of the present invention is such that the mesh screen is placed on a predetermined position of a base of an ink jet printer in a state where no photosensitive resin layer is formed on both sides of a mesh screen made of a hard material, and the mesh screen The mesh screen is irradiated with light from a light irradiation lamp of the ink jet printer by ejecting photocurable ink from the print head of the ink jet printer toward the surface not facing the ink and moving the relative position while drawing on the mesh screen. The photocurable ink is cured, and then the mesh screen is bonded to a plate frame to form a screen printing plate.

  According to the present invention, since a photosensitive resin layer is not formed by coating a photosensitive emulsion on a mesh screen, a stable drawing operation can be easily performed. And since the photocurable ink of the said mesh screen is hardened while drawing, a screen printing plate can be finished in a short time. And since the shape of the mesh screen made of a hard material is hard to change, it can be joined to the plate frame without being stretched like a mesh screen made of a soft material.

  Here, the hard material is a material whose shape does not easily change, and is composed of a fabric of hard metal yarn such as stainless steel thread or aluminum thread. The soft material is a material whose shape is likely to change, and is made of a synthetic fiber fabric made of, for example, nylon yarn or polyester yarn.

  The mesh screen made of the hard material is bonded to the plate frame while maintaining the shape when drawn. The bonding is bonding with an adhesive, bonding with a double-sided tape, screwing, or other fixing means.

  Since the mesh screen made of the soft material needs to be tensioned, it is stretched on the plate frame in advance, and is drawn while maintaining the shape when stretched.

  In the present invention, the surface of the mesh screen that is not opposed to the plate frame is an A surface, and is cured while drawing on the A surface to form a screen printing plate. Placed at a predetermined position on the base, discharges photocurable ink from the print head of the inkjet printer toward the B surface opposite to the A surface, and overlays the image on the A surface to draw on the B surface The screen printing plate may be obtained by moving the relative position while irradiating light from the light irradiation lamp of the ink jet printer and curing the photocurable ink of the mesh screen. According to the present invention, it is easy to further increase the film thickness by drawing and curing on both surfaces of the mesh screen.

  According to the method for producing a screen printing plate of the present invention, since an ink-jet image is drawn on a screen plate in which a photosensitive resin layer is not formed on both sides of a mesh screen, a photosensitive emulsion is applied to the mesh screen to form a photosensitive resin layer. Since there is no formation itself, a stable drawing operation can be easily performed.

  According to the method for producing a screen printing plate of the present invention, since a photosensitive resin layer is not formed on both sides of a mesh screen made of a hard material, drawing is performed by ink jetting. Since there is no formation of the resin layer itself, a stable drawing operation can be easily performed.

  According to the present invention, since the photocurable ink of the mesh screen is cured while drawing, the screen printing plate can be finished in a short time. According to the present invention, a screen printing plate can be finished in a shorter time by curing with an ultraviolet irradiation lamp provided in the ink jet printer while drawing using an ultraviolet curable ink having excellent quick drying properties, and workability is improved. Will improve dramatically.

It is a perspective view which shows the state which mounted the screen plate in the base of an inkjet printer, in order to manufacture the screen printing plate of this invention. It is sectional drawing which shows typically the arrangement | positioning relationship between the screen printing plate of the 1st Embodiment of this invention, and an inkjet printer. It is sectional drawing which shows typically the arrangement | positioning relationship between the screen printing plate of the 2nd Embodiment of this invention, and an inkjet printer. It is sectional drawing which shows typically the arrangement | positioning relationship of the screen printing plate of the 3rd Embodiment of this invention, and an inkjet printer. It is sectional drawing which shows typically the screen printing plate of the 4th Embodiment of this invention, (a) is sectional drawing which shows the arrangement | positioning relationship between a mesh screen and an inkjet printer, (b) shows a screen printing plate. It is sectional drawing. It is a figure which illustrates the screen printing plate of embodiment of this invention, (a) is a bottom view, (b) is a top view. It is sectional drawing which shows typically the usage condition of the screen printing plate of embodiment of this invention.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing a state in which a screen plate is placed on a base of an ink jet printer in order to manufacture the screen printing plate of the present invention. FIG. 2 is a cross-sectional view schematically showing the positional relationship between the screen printing plate and the ink jet printer according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view when viewed from the direction of the arrow c in FIG. In the ink jet printer 10 illustrated in FIG. 1, the head unit 11 performs horizontal drawing on the base 14 in the direction of the arrow sign a <b> 1 for drawing. The head unit 11 of the ink jet printer 100 includes a print head 12 and a light irradiation lamp 13 (FIG. 2). Since the inkjet printer 10 can be applied to a known device, a part of the description is omitted, and only the main part according to the present invention is simplified in FIGS. 1 and 2.

FIG. 6 is a diagram illustrating a screen printing plate according to an embodiment of the present invention. FIG. 6 (a) is a bottom view and FIG. 6 (b) is a plan view. In the screen printing plate 1 of the present embodiment, a photocurable ink 3 is applied to a screen plate in which a mesh screen 2 is stretched around a plate frame 4 but a photosensitive resin layer is not formed on both sides of the mesh screen 2. It is drawn by.
The mesh screen 2 is made of a synthetic fiber fabric. Examples of synthetic fibers include nylon, polyester, and composite fibers thereof. By being a woven fabric made of synthetic fibers of thermoplastic resin, it is easy to make fraying difficult. As the color of the mesh screen 2, colors such as yellow, white, and green are selected in consideration of drawing workability. Yellow is preferable because it facilitates light to travel straight.
The plate frame 4 is a square frame made of metal such as aluminum or stainless steel (FIGS. 6A and 6B).
As the photocurable ink 3, a known photocurable ink for inkjet printing is applied. As the color of the photocurable ink 3, a color different from the color of the mesh screen 2 is selected in consideration of drawing discrimination, and colors such as black, red, and blue are selected. Black is preferable because the edges of the image can be easily distinguished. The photocurable ink 3 is an ultraviolet curable ink.

FIG. 7 is a cross-sectional view schematically showing how the screen printing plate of this embodiment is used, and shows screen printing. The non-printing portion drawn with the ultraviolet curable ink 3 closes the small holes of the mesh screen 2, and the printing portion is processed so that the ink 500 can pass through. The ink 500 is spread and spread on the entire surface of the sheet 1, and is transferred to the substrate 200 by pressing and printed. When the substrate 200 is a soft material, it is placed on the flat base 300. Screen printing is suitable for industrial production because it can be printed on a variety of media such as printed circuit boards, substrates for liquid crystal displays, stationery, sports equipment, T-shirts, ceramics, signs, posters, stickers, sheets, signs, flags, etc. Widely used.
Here, for convenience of explanation, the surface on the side where the mesh screen 2 is not opposed to the plate frame 4 is referred to as A surface (reference 2a), and the surface opposite to the A surface 2a is referred to as B surface (reference 2b). (FIGS. 2 to 7).

  In the method for manufacturing the screen printing plate 1 of the present embodiment, a screen plate in which the mesh screen 2 is stretched over the plate frame 4 but the photosensitive resin layer is not formed on both sides of the mesh screen 2 is used as an ink jet printer. The ultraviolet curable ink 3 is placed from a print head 12 of the inkjet printer 10 toward the A surface 2a on the side where the mesh screen 2 is not opposed to the plate frame 4. And the relative position is moved while drawing on the mesh screen 2 to irradiate ultraviolet rays from the ultraviolet irradiation lamp 13 of the ink jet printer 10 to cure the ultraviolet curable ink 3 of the mesh screen 2 to obtain the screen printing plate 1 ( FIG. 1, FIG. 2).

  According to the present embodiment, the manufacturing process is simplified because the equipment for applying the photosensitive emulsion to the mesh screen 2 to form the photosensitive resin layer and the equipment for exposing and developing the photosensitive resin layer are not required. In addition, it does not consume chemicals such as developer and cleaning solution, so the environmental burden is reduced. That is, according to the present embodiment, since the ink is drawn on a screen plate in which the photosensitive resin layer is not formed on both sides of the mesh screen 2, the photosensitive emulsion is applied to the mesh screen 2 to form the photosensitive resin layer. Since there is nothing in itself, stable drawing work can be easily performed. Since the ultraviolet curable ink 3 of the mesh screen 2 is cured while drawing, the screen printing plate 1 can be finished in a short time.

  Further, according to the present embodiment, since the distance between the print head 12 and the mesh screen 2 can be set to a distance shorter than the thickness of the plate frame 4, it becomes easy to perform drawing with a clearer outline (FIG. 1, FIG. 1). Figure 2).

  In the present embodiment, the work of curing while drawing on the mesh screen 2 may be performed once or may be repeated a plurality of times. By repeating the work of curing while drawing on the mesh screen 2 a plurality of times, it becomes easy to increase the film thickness by the drawing.

For example, when the printing film thickness is small for posters, stickers, sheets, paper products, etc., the work of curing while drawing on the mesh screen 2 may be completed once or repeated within 10 times. You can also.
For example, when the film thickness of printing is large for sporting goods, T-shirts, flags, fabric products, etc., it is preferable to repeat the curing operation while drawing on the mesh screen 2 at least 100 times. It can be repeated.

(Second Embodiment)
FIG. 3 is a cross-sectional view schematically showing the positional relationship between the screen printing plate and the ink jet printer according to the second embodiment of the present invention. 3 is a cross-sectional view when viewed from the direction of the arrow c in FIG. Here, the same code | symbol has shown the same function, and the description is partially abbreviate | omitted.

  In the example shown in FIG. 3, the mesh screen 2 is drawn on the A surface 2 a not facing the plate frame 4 in a state where the water repellent sheet 6 is in contact with the B surface 2 b facing the plate frame 4. While curing.

  Examples of the material of the water repellent sheet 6 include silicone, fluororesin, and polypropylene. A block 7 is disposed below the water repellent sheet 6 (FIG. 3). The block 7 is made of a sponge, a resin block, a wooden block, a metal block, or the like. The block 7 is, for example, sponge foam, and has a thickness that slightly lifts the plate frame 4 from the base 14 of the ink jet printer 10 (FIG. 3). As a result, the water repellent sheet 6 is more reliably brought into contact with the mesh screen 2.

  According to the present embodiment, it is possible to prevent the ultraviolet curable ink 3 from dripping from the B surface 2b which is the opposite side of the drawn surface.

(Third embodiment)
FIG. 4 is a cross-sectional view schematically showing the positional relationship between the screen printing plate and the ink jet printer according to the third embodiment of the present invention. FIG. 4 is a cross-sectional view when viewed from the direction of the arrow c in FIG. Here, the same code | symbol has shown the same function, and the description is partially abbreviate | omitted.

  In the example shown in FIG. 4, the mesh screen 2 is drawn on the A surface 2 a that is not opposed to the plate frame 4 in a state where the adhesive film 9 is attached to the B surface 2 b that is opposed to the plate frame 4. Then, the adhesive film 9 is peeled off.

  Examples of the material of the adhesive film 9 include polypropylene and polyethylene.

  According to this embodiment, the ultraviolet curable ink 3 does not go around to the opposite side of the drawn surface, and it is easy to reduce the film thickness.

(Fourth embodiment)
FIG. 5 is a cross-sectional view schematically showing a screen printing plate according to the fourth embodiment of the present invention. FIG. 5A is a cross-sectional view showing the positional relationship between the mesh screen and the ink jet printer, and FIG. 5B is a cross-sectional view showing the screen printing plate. In this embodiment, the mesh screen 2 is made of a hard material. The hard material is a material whose shape does not easily change, and is composed of a fabric of hard metal yarn such as stainless steel thread or aluminum thread.

  In the example shown in FIG. 5A, in a state where the water repellent sheet 6 is in contact with the B surface 2b of the mesh screen 2 made of a hard material, it is cured while drawing on the A surface 2a of the mesh screen 2 made of a hard material. . Thereafter, the mesh screen 2 made of a hard material is bonded and fixed to the plate frame by a bonding means such as an adhesive while maintaining the shape when drawn (FIG. 5B).

  According to the present embodiment, it is possible to prevent the ultraviolet curable ink 3 from dripping from the B surface 2b which is the opposite side of the drawn surface.

  The present embodiment is not limited to the above contents. For example, in a state where the adhesive film 9 is adhered to the B surface 2b of the mesh screen 2 made of hard material, the adhesive film 9 is cured while being drawn on the A surface 2a of the mesh screen 2 made of hard material, and then the adhesive film 9 May be peeled off. Further, for example, paper may be laid on the B surface 2b of the mesh screen 2, or nothing may be laid.

  In the above-described embodiment, the ultraviolet curable ink 3 is ejected from the print head 12 of the inkjet printer 10 toward the A surface 2 a of the mesh screen 2, and the relative position is moved while drawing on the mesh screen 2. Although an example in which ultraviolet rays are irradiated from the ultraviolet irradiation lamp 13 and the ultraviolet curable ink 3 of the mesh screen 2 is cured has been described, the present invention is not limited to this, and the photocurable ink is applied from the print head 12. It includes a method of moving the relative position while discharging and drawing, and curing the photocurable ink with a light irradiation lamp.

  The present invention is not limited to the above-described embodiment. For example, after the photocurable ink 3 is ejected toward the A surface 2a of the mesh screen 2 and cured while being drawn, the B surface 2b of the mesh screen 2 is used. Alternatively, the photocurable ink 3 may be ejected toward the surface and superimposed on the image on the A surface 2a and cured while drawing on the B surface 2b to further increase the film thickness. Thus, it goes without saying that the present invention can be modified as appropriate without departing from the spirit of the present invention.

1. Screen printing plate of the present invention,
2 mesh screen,
2a A surface (surface on the side where the mesh screen is not opposed to the plate frame),
2b B surface (surface on the side where the mesh screen faces the plate frame),
3 photocurable ink (ultraviolet curable ink),
4 plates,
10 Inkjet printer,
11 Head unit 12 Print head,
13 Light irradiation lamp (ultraviolet irradiation lamp),

Claims (6)

  A screen plate in which a mesh screen is stretched on a plate frame but a photosensitive resin layer is not formed on both sides of the mesh screen is placed at a predetermined position on the base of an ink jet printer, and the mesh screen is mounted on the plate. The photocurable ink is ejected from the print head of the inkjet printer toward the surface not facing the frame, and the relative position is moved while drawing on the mesh screen, and light is emitted from the light irradiation lamp of the inkjet printer. A method for producing a screen printing plate, comprising curing the photocurable ink of the mesh screen to obtain a screen printing plate.   The mesh screen is cured while drawing on the A surface in a state in which the surface not facing the plate frame is an A surface and a water repellent sheet is in contact with the B surface opposite to the A surface. The method for producing a screen printing plate according to claim 1, wherein:   The surface of the mesh screen that is not opposed to the plate frame is the A surface, and is cured while drawing on the A surface with an adhesive film attached to the B surface opposite to the A surface, The method for producing a screen printing plate according to claim 1, wherein the adhesive film is then peeled off.   An ink jet printer that is placed at a predetermined position of a base of an ink jet printer without a photosensitive resin layer formed on both sides of a mesh screen made of a hard material, and that the mesh screen faces a surface that does not face the plate frame. The photocurable ink is ejected from the print head and the relative position is moved while drawing on the mesh screen to irradiate light from the light irradiation lamp of the inkjet printer to cure the photocurable ink on the mesh screen, and then A method for producing a screen printing plate, comprising joining the mesh screen to a plate frame to obtain a screen printing plate.   The method for producing a screen printing plate according to any one of claims 1 to 4, wherein the photocurable ink is an ultraviolet curable ink, and the light irradiation lamp is an ultraviolet irradiation lamp.   The method for producing a screen printing plate according to any one of claims 1 to 5, wherein the work of curing while drawing on the mesh screen is repeated a plurality of times.

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