JP3689536B2 - Image forming method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is in the printing relates to an image forming method for obtaining high definition and high flatness of the resin surface image when patterning the color filter for liquid crystal formation and resist agent.
[0002]
[Prior art]
Flat plate and letterpress offset printing machines are equipped with a large number of bend rollers and an inking roller for inking the plate surface. ing.
[0003]
[Problems to be solved by the invention]
The ink is transferred between the rollers, and when this transfer is performed, the ink is torn between the two rollers. At this time, a thread drawing phenomenon occurs on the ink surface, and the thread breaks and landes on each roller again. This landing causes unevenness of the ink film thickness (melon pattern) on the roller surface and the printing plate surface, which leads to the occurrence of roughness of the printed matter, resolution and flatness. Also, because the roller surface has a limited area, when printing over a large area, the applied roller does more than one rotation on the plate surface and the second rotation makes the ink film thickness different (ghost). Causing quality degradation.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming method by a printing method that eliminates a rough feeling, improves resolution and flatness, and eliminates a ghost by completely eliminating a melon pattern.
[0005]
[Means for Solving the Problems]
To achieve the above object, an image forming method by printing of the present invention includes a coating step of forming a coating surface of the resin or ink is coated on a silicone resin surface of the transfer cylinder, the transfer cylinder formed through the above coating step, convex portions in a predetermined shape by rolling on letterpress is formed, a removal step of transferring removing resin of the coating surface corresponding to the convex portion of the convex plate, a transfer cylinder formed through the above removal process, on the basis It was rolling, comprising the resin remaining in the coating surface and a transfer step of transferring the base. In this image forming method, the coating surface can be formed by a blade unit , or a wire bar unit and a blade unit can be used in combination .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with an example of a color filter .
Figure 1, each of the resin relief plate 1-R for 3-color, 1-G, 1-B shows the resin relief plate made of the plate surface plate 2-R to support these resins letterpress, 2-G, A silicon sheet 7 is wound around a moving frame 6 that moves left and right on a fixed frame 5 equipped with 2-B and a glass surface plate 4 that supports the glass substrate 3, and an ink supply device 9 and a blade unit 10 are provided. Three transfer cylinders 8 -R, 8-G, and 8-B are provided, and the transfer cylinders 8 -R, 8 -G, and 8 -B respectively correspond to the corresponding plate plates 2 -R, 2 -G, 2, 2, Roll on -B and glass platen 4. A cleaning roller unit 12 is mounted on the moving frame 6 to roll on the resin relief plates 1-R, 1-G, 1-B and clean the resin on the projections.
[0007]
Next, the movement will be described. The glass substrate 3 on which the light-shielding film is pre-patterned is registered on the glass surface plate 4, and the TOYOBO print plate is used as a resin relief plate, and the pixel portions of each color of the filter are recessed. Each plate is made so that it becomes and placed on each platen 2-R, 2-G, 2-B. As shown in FIG. 3, the ink 13 is dropped on the silicon sheet 7 from each ink supply device 9 at the timing when the moving frame 6 moves to the left and right, and is applied to the entire surface of the silicon sheet 7 by the blade unit 10 to apply the coating surface 16. Form. At this time, in consideration of the viscosity of the ink, the wire bar unit 11 may be used together if necessary. As this application surface 16 rolls on the resin relief plate as shown in FIG. 2 (b), only ink of a predetermined shape remains on the application surface 16, and this is shown in FIG. 2 (c). Since it is transferred to the top and is equipped with three cylinders and three plates, three-color simultaneous printing is performed, and thus a filter with a flatness of ± 0.05 is obtained with a film thickness of 0.8 μm by one film transfer. I was able to.
[0008]
A method of performing a process by pressing 3 to 4 times in order to obtain a predetermined film thickness (1 μ to 0.8 μ) only after the ink transfer by the conventional printing method is performed 5 to 6 times. On the other hand, in this invention, it can manufacture with the tact of 1 / 4-1 / 5. Furthermore, since the flatness is ± 0.1 μm in the conventional method, the quality is doubled, and the edge linearity of the pixel is also obtained in the photolithographic method (although there was a waviness of 20 to 25 μ width in the conventional printing method). A thing inferior to the object is obtained, and almost no swell is recognized. This indicates that it is possible to cope with a light shielding film width of 10 μm in the future to increase the aperture ratio.
[0009]
【The invention's effect】
According to the image forming method by printing of the present invention, the quality of photolithography can be obtained with ease of printing far from conventional printing common sense. In this embodiment, an example of a color filter has been described. However, the present invention can also be applied to a field where photolithography technology is used, such as patterning of a printed circuit board or patterning of an electric circuit by etching.
[Brief description of the drawings]
FIG. 1 is a side view of a color filter manufacturing machine showing an embodiment of the present invention.
2A is a principle view of the present invention, FIG. 2A is a coating process, FIG. 2B is a removal process, and FIG. 2C is a transfer process;
FIG. 3 is an explanatory diagram for flattening a resin surface in stages.
[Explanation of symbols]
1 Resin letterpress 7 Silicon sheet 10 Blade unit 11 Wire bar unit 16 Application surface

Claims (4)

An application process in which ink is applied to the silicon resin surface of the transfer cylinder to form an application surface, and a transfer cylinder that has undergone the above-described application process is rolled on a relief plate having convex portions formed in a predetermined shape. A removal step of transferring and removing the ink on the coated surface corresponding to the convex portion, and a transfer step of transferring the ink remaining on the coated surface to the substrate by rolling the transfer cylinder that has undergone the removal step above the substrate. An image forming method by printing comprising: An application process in which a resin is applied to the silicon resin surface of the transfer cylinder to form an application surface, and a transfer cylinder that has undergone the above-described application process is rolled on a relief plate having a convex portion formed in a predetermined shape. A removal step of transferring and removing the resin on the coated surface corresponding to the convex portion, and a transfer step of rolling the transfer cylinder that has undergone the removal step on the substrate and transferring the resin remaining on the coated surface to the substrate. An image forming method by printing comprising: 3. The image forming method according to claim 1, wherein the coating surface is formed by a blade unit. 3. The image forming method according to claim 1, wherein the coating surface is formed by using a wire bar unit and a blade unit in combination.

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