JPS59159351A - Fabrication of register mark for printing transparent ink pattern - Google Patents

Abstract

PURPOSE:To perform printing without registration, by reading a sensor detecting mark provided to the end part of a printing cylinder by a sensor while operating the ink jet printer provided outside the cylinder by the signal of said sensor. CONSTITUTION:A sensor detecting mark 3 is provided to the end part 2 of a cylinder 1 for printing colorless transparent ink and read by a sensor 4 for optically detecting said mark 3. The ink jet printer 5 provided to the outside of the aforementioned cylinder 1 is operated by the detection signal of said sensor 4. Because a register mark 8 reads the detecting mark 3 at the position corresponding to the transparent ink pattern printing part of the cylinder 1 and provided to a printing base material corresponding thereto, it can be provided at the position corresponding to a transparent ink pattern 7. As a result, a printing speed is accelerated and efficient printing without bad register is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for creating registration marks for registration when creating a colorless transparent ink pattern such as a base coat varnish or a final top coat varnish on a mark till M'E. .

In multi-color printing, it is common practice to attach, for example, a cross-shaped registration mark for each color in the margin area outside the printed area to detect registration errors during JF printing. In addition, a method of automatically registering the misregistration of overlapping printing using an optical method such as a capillary tube or a navigation camera is also used.

[7 However,) Even in the two-dimensional method, misregistration is detected in the case of colorless and transparent ink. -I couldn't do it.

For this reason, coloring ingredients such as pigments and dyes were added to colorless transparent ink to create patterns that could be detected by optical methods, but if the ink cannot be used unless it is colorless, it cannot be colored. Therefore, it has the disadvantage that it may not be detectable by optical methods.

Therefore, the registration of colorless and transparent ink patterns has to rely on visual detection, and automatic detection has been difficult. For this reason, the printing speed had to be slowed down for visual detection, resulting in inefficient work.

The present invention is capable of automatically detecting the registration mark of a colorless transparent ink pattern by providing a μ mark on the upper culm, which is different from the colorless transparent ink pattern printing.
The purpose is to make people more efficient.

1'-J, the present invention will be explained based on the drawings.

As shown in FIG. 1, in the process of printing a colorless transparent ink pattern, a sensor detection mark (3) is provided on the end lX2) of the colorless transparent ink printing J old cylinder (l), and the sensor detection 11-P mark (3) is read by a known optically detectable ten-ree (•I), and this detection 1. In addition, the cylinder (11, which is installed on the outside of the printer 15) is actuated by a single bow.

The detection mark on the cylinder can be placed at the same time as the cylinder is made into a plate using a squareless transparent ink pattern filter.

, - inkjet printer 15) has a sensor (
4) detects the detection mark (3), the printing substrate (
6) A method of creating a register mark for printing a transparent ink pattern, in which a mark of a predetermined shape is created on the inner gold white part of the end.

This register mark (8) corresponds to the transparent in-6-- key pattern printing part of the cylinder (1) 1-7 Detection of the Cal position 1-4 mark increased reading I), so 1. Corresponding to the printing group (ζ(
1), and 1 for the transparent ink pattern (7)
3L Moo D position (provided. - can be done.

In addition, the mark for 1 is 2, and 4 at one end of the cylinder.
It may be provided on both sides of the cylinder 11111.k) 4) It may also be provided on the cylinder throat, and the detection 11 [mark] installed on the shaft can be used to preset the displacement of the position of the ink pattern.
In addition, when creating the μ mark using an ink geno I printer, it can be placed at the position corresponding to the transparent ink geno (3°) on varnish, etc. like this. L colorless and transparent ζ turn mark Mi
At the same time, a mark can be placed on the transparent ink pattern (corresponding to C), so this mark can be detected using the same method as the conventional detection method, and the mark can be detected in the same way as the conventional detection method. Matching with the pattern 5 can be done automatically.

, Knee y=me The conventional colorless transparent pattern is seen in 11th e
) Comparison with previous registration (~, printing speed can be increased and marks can be made efficiently and without misregistration;
Ri became tjj noh.

In addition, the process of omitting the process of adding the lightest detectable color to colorless and transparent ink as in the past, and adding color to the ink. : There are no restrictions on its use, and it can be fully used in the initial or final process.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a method for creating a printing register mark according to the present invention. 1... Cylinder 2... End 5... Detection mark 4... Sensor 5... Inkjet printer 6... Printing base material 7... Transparent ink pattern 8
...Register mark patent issued 1 Tonjin Toppan Printing Co., Ltd. Figure 1

Claims (1)

[Claims] In the process of printing colorless and transparent ink, a sensor is placed on the end or shaft of the old cylinder.
A mark for knowledge was provided, the detection mark was read by a sensor that detects it mechanically, and the read signal activated an ingigenoto printer installed on the outside of the cylinder to print on the printing base material. A method for creating a registration mark for printing a transparent ink pattern, in which a registration mark for printing is provided in the margin of a base material at a position corresponding to the transparent ink pattern.