Gravure mark setting method

Abstract

The invention belongs to the technical field of multi-color registration of a roll paper gravure press, and discloses a gravure mark setting method, which comprises the following steps of: firstly, setting a first color block at an image-text blank part of a first color mark on a common silver card paper product, and selecting a position in the first color block as a first hollow mark; then setting the second-color white mark as a white color block with the same size as the first color block at the blank part of the image-text, and making a second hollow mark with the same shape and size as the first hollow mark on the white color block; after the two colors are overprinted, the first hollow mark is white, the second hollow mark is a color formed by overlapping the bottom color of the silver card paper and the first color, the other positions of the blank part of the image-text are a color formed by overlapping the bottom color of the silver card paper, the first color and the white, and at the moment, the light-color mark and the white mark can be identified by a sensor. According to the invention, the production cost is reduced, and the problems that the white mark cannot be identified on the white paper edge and cannot be automatically registered are solved.

Description

technical field [0001] The invention belongs to the technical field of multi-color registration of web gravure printing machines, and particularly relates to a method for setting gravure marks. Background technique [0002] At present, the working principle of the multi-color registration system of the web gravure printing machine is mainly to scan the registration marks of the printing color group through the sensor, and convert the optical signal into an electrical signal. Therefore, the strength of the light signal reflected by the mark is very important for the recognition of the sensor. In order to ensure the validity of the mark signal identification, the general gravure products are set with a special light silver edge or white paper edge for printing marks on the typesetting. According to the first color selection, the first color is white, generally choose silver edge, the first color is light color, generally choose white edge. When printing the monochrome group,...

AI Technical Summary

Problems solved by technology

But at the same time, the problem that the white color group mark cannot be recognized and cannot be automatically registered

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