Screenless processing technology for printing roller

Abstract

The invention discloses a screenless processing technology for a printing roller. The screenless processing technology comprises the following steps of (1), a copper plating process, (2), a grinding and polishing process, (3), an engraving process and (4), a chromium plating process. By means of the technology, the problems that an existing pattern has the rich color level changes and not only has large color lumps with the deep color and high color density, but also has transition layers with the light color and gentle color, and when a color plate of one image data is engraved, unified parameters cannot be engraved at the same time are solved, the pattern with the same layer as an original engraving piece, the depth higher than that of the primary engraving and the higher thickness is formed, and the two-plate printing effect can be achieved through one printing roller for customers.

Description

technical field [0001] The invention relates to a non-network processing technology for plate rolls. Background technique [0002] Version roller, also called steel roller. It is divided into hollow rolls and solid rolls, shaft rolls and non-shaft rolls, and is generally used for plate making. The existing plate roller manufacturing process is divided into three types: 1. Electronic engraving process; 2. Laser engraving and post-etching treatment process; 3. Laser direct ablation plate making process. Among them, the electronic engraving process is the most mature. It has the advantages of low engraving cost, high engraving frequency, high and stable engraving quality, and wide adaptability. It is widely used and plays a leading role in gravure plate making. [0003] The electronic engraving process is a production process in which the image is engraved onto the gravure roll by the electronic engraving machine. It first inputs the data of the image file into the control sy...

AI Technical Summary

Problems solved by technology

[0004] Since the image has rich color level changes, there are large color blocks with high density of darker colors and soft transition layers of lighter colors. When engraving a color plate of image data, uniform parameters It cannot be engraved at the same time. The existing method is to weigh the advantages and disadvantages according to the printing effect proposed by the customer, and choose a compromise parameter to restore the effect of the image to the greatest extent; or even choose to divide a color plate into two plates according to the thickness. Roller is used for engraving, but it will greatly increase the cost of raw materials, production cycle, production cost and production efficiency, and the engraving depth is shallow

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