JPH02175252A - Multi-color printing press - Google Patents

Abstract

PURPOSE:To perform a multi-color printing using one printing press by using a multi-color printing press in which surface plates for printing plates corresponding to respective colors and a surface plate for a matter to be printed are provided on a frame and with respect to both the printing surface plates and a blanket the relative movement of lateral components is regulated. CONSTITUTION:A plurality of plates 12A, 12B, 12C corresponding to respective colors of a color filter are serially arranged on a frame 11 together with a glass substrate 13. Each of inks R, G, B of two or more colors applied on the respective plates 12A, 12B, 12C is transferred onto the glass substrate 13 using a part corresponding to each color of a blanket 15 set on the periphery of a drum 14. By repeating this action by the number of colors, a color filter can be obtained using one printing press. Therefore, the need for preparing two or more printing presses corresponding to the each color of the color filter is eliminated, a cost required for production equipments can be lowered, and a space for installing the equipments can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multicolor printing press used for printing that requires precise alignment, such as in the production of color filters.

[Conventional technology]

In recent years, items such as color filters that require precise alignment have also been provided by printing.

Figure 5 shows the configuration of a printing press used for such printing, and shows a state in which a printing plate surface plate is placed on a pedestal 1, a plate 2 is placed on top of the printing plate surface plate, and a glass substrate 3 is placed on a printing material surface plate. ing. Further, a drum 4 is provided above the frame so as to be rotatable and movable in the vertical direction. A blanket 5 is attached to the outer periphery of the drum 4, and the blanket 5 is configured to transfer the ink applied to the plate 2 onto the glass substrate 3.

When manufacturing a color filter using a printing press configured as described above, first, as shown in FIG. 6(a), for example, red ink R is applied to the plate 2 on the stand 1. Next, the drum 4 is lowered to a predetermined position, and as shown in FIG.
The stand 1 is moved in the direction of the arrow while being pressed against the surface of the plate 2. The ink R applied to the plate 2 thereby adheres to the surface of the blanket 5 attached to the outer periphery of the drum 4, as shown in FIG. 6(C). Thereafter, the drum 4 is lowered again to a predetermined position, and the pedestal 1 is moved in the direction of the arrow while pressing the drum 4 against the glass substrate 3 as shown in FIG. 6(d). As shown, ink aL and ink R applied to the blanket 5 are transferred onto the glass substrate 3.

Therefore, when printing multiple colors of ink, such as red, green, and blue inks R, G, and B, on the glass substrate 3, the method described above is repeated for green to transfer the multiple colors of ink onto the glass substrate 3. .

[Problem to be solved by the invention]

However, when printing in multiple colors using such a printing machine, it is necessary to prepare multiple printing machines corresponding to each color, which increases equipment costs and requires installation of IiR printing machines. There was a problem in that it required a relatively large installation space. In addition, it was necessary to align and fix each color on the printing surface of the printing press. Therefore, positional deviation during fixation becomes a problem, resulting in a problem that the relative positional accuracy of colors is reduced.

The object of the present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a multicolor printing press that can perform multicolor printing with a single printing press.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a gantry in which a printing plate surface plate corresponding to each color and a printing material surface plate are provided, and both the printing plate surface plate and the blanket are moved relative to each other in the lateral direction. The aim is to use a multicolor printing machine that is regulated. The effect is especially great when the blanket is divided into sections for each color.

[For production]

By using the above-mentioned printing machine and transferring the ink applied to the intaglio plate onto the above-mentioned substrate using a blanket attached to the outer periphery of the drum, it is possible to print in multiple colors with one Ink III machine, and the darkness can be improved. Also, lateral alignment, which is particularly problematic, can be reduced. This is because when the plates are aligned for each color, the relative positions in the lateral direction between the colors are determined, regardless of the alignment when the printing medium is fixed.

〔Example〕

FIG. 1 is a plan view of a printing press showing an embodiment of the present invention, and FIG. 2 is a side view thereof. In Figures 1 and 2,
In the figure, reference numeral 11 denotes a horizontally movable pedestal, and on this pedestal 11 are a plurality of plates 12A corresponding to each color of the color filter.

12B and 12C are placed on each plate plate 22, and the glass substrate 1
3 are placed in advance on the printing material surface plate 23-J: in series along the moving direction of the gantry 11, aligned with the claws 24 or by mere abutting means. Further, a drum 14 is provided on one side of the pedestal 11 so as to be movable downward on a rotary rack. A blanket 15 is attached to the outer periphery of this drum 14, and this blanket 15 is used to hold the first plate 12.
Excess ink was removed on a stage (not shown) applied to A, and the ink of one negative color was transferred onto the glass substrate 13 in order, while the plates 12B and 12C were transferred to the other colors while changing the transfer position of the blanket 15. It is configured to be transferred. The circumferential length of the drum 14 is approximately three times that of the drum 4 of the printing press shown in FIG. 4 because the transfer positions corresponding to each color are divided into frequencies.

When manufacturing a color filter using a printing machine configured as described above, first, red ink R is applied to plates 12A arranged in series on a pedestal 11 as shown in FIG. 3(a). Next, the drum 14 is lowered to a predetermined position, and the drum 14 is lowered to a predetermined position.
), the pedestal 11 is moved in the direction of the arrow with the drum 14 pressed against the surface of the plate 12A. As a result, the ink R applied to the plate 12A adheres to the surface of the blanket 15 at a predetermined position. Next, the drum 14 is lowered again to a predetermined position, and as shown in FIG.
The blanket 15 attached to the outer periphery of the glass substrate 13
press it against the surface. Then, in this state, the pedestal 11 is moved by a predetermined amount in the direction of the arrow, and the red ink R adhering to the blanket 15 is transferred onto the glass substrate 13. By repeating the same operation and printing the two colors of the pond,
A color filter i as shown in FIGS. 4(a) and 4(b) is provided. Note that 16 in FIG. 4 is an overcoat layer. Further, the portions on the blanket 15 used for transfer are separated on the circumference.

As described above, in this embodiment, there are a plurality of plates 12A and 12B corresponding to each color of the color filter.

12C are arranged in series on the pedestal 11 together with the glass substrate 13, and the inks of multiple colors R, G, and B applied to each plate 1.2A, 1.2B, and 12C are placed on the blanket 15 attached to the outer periphery of the drum 14. Glass substrate 1 with parts corresponding to each color.
By repeating the transfer to 3-L for the number of colors,
Color filters can be manufactured for just ¥11 per machine. Therefore, it is not necessary to prepare a plurality of printing machines for each color of the color filter, and the cost required for manufacturing equipment can be reduced, and the installation space for the equipment can be reduced.

Furthermore, as another embodiment, a configuration may be considered in which the positions on the blanket used for transferring each color are the same. Compared to the above embodiments, this embodiment has the advantage of reducing the size of the blanket, allowing the printing machine to be made smaller. However, a disadvantage is that the remaining ink transferred to the substrate and the newly transferred ink tend to mix colors.

Further, as another example, there is a method in which three colors are sequentially transferred onto a blanket, and then transferred onto a substrate one after another. This also has advantages and disadvantages compared to any of the embodiments described above. This example cannot be applied to products that cannot be exposed to outside air for a long time, such as quick drying, but on the other hand, this example is better for products that require a longer exposure time. Furthermore, since the overall moving distance is shortened, there is also the effect of increasing the printing speed.

It should be noted that the present invention is not limited to the above-described embodiments, but may be of a structure in which only the pedestal or the blanket moves in both the up and down and back and forth directions, and the other is fixed. Further, the movement regulation direction is generally a rail or gear lock method, but other servo control methods may also be used. In addition, the method of fixing the plate to the plate surface plate and the method of fixing the printing material to the printing material surface plate include nail fixation, simple butt fixation,
Any method such as fixing the bottle can be used. Further, the plate method may be any method such as intaglio, letterpress, offset, and gravure.

〔Effect of the invention〕

As explained above, the present invention provides 1! Several plates were arranged in series with the substrate, and the ink applied to each plate was transferred onto the substrate by a blanket attached to the outer periphery of the drum, allowing printing to be performed in multiple colors. can be manufactured using one printing machine, reducing equipment costs, reducing equipment installation space, and eliminating lateral relative deviation between colors.

[Brief explanation of the drawing]

Fig. 1 is a front view of a printing press used in the method of manufacturing a color filter according to the present invention, Fig. 2 is a side view thereof, and Fig. 3 (
a) to (f) are explanatory diagrams showing the method of manufacturing a color filter according to the present invention, FIG. 4(a) is a sectional view of the color filter, FIG. 4(b) is a plan view thereof, and FIG. 5 is a conventional color filter. A side view of the printing machine used in the filter manufacturing method, Fig. 6 (
a) to (e) are explanatory diagrams showing a conventional method of manufacturing a color filter. 11... Frame, 12A, 12B, 12C... Version, 1
3... Glass substrate, 14... Drum, 15... Blanket, 22... Plate plate, 23... Printing material plate, 24... Claw. Applicant's Attorney Patent Attorney] Takehiko Suzue Figure 2C 2B 2A Figure 2

Claims (2)

[Claims] (1) A printing plate surface plate corresponding to each color and a printing material surface plate are provided on a mount, and the printing plate surface plate, the printing material surface plate, and a blanket are arranged in series, and the mount and the printing material surface plate are arranged in series. A multicolor printing press in which the relative movement of the lateral component of the blanket is regulated. (2) The multicolor printing machine according to claim 1, wherein the blanket is divided into sections used for each color.