Duplex printing process

Abstract

The invention relates to a duplex printing process. According to the duplex printing process, an upper printing roller, a transfer printing roller and a lower printing roller are arranged in parallel in a tangent mode, a pattern on the lower printing roller is transferred to the transfer printing roller, and the upper printing roller and the transfer printing roller clamp a to-be-printed object between the upper printing roller and the transfer printing roller, convey the to-be-printed object forwards and print the front surface and the back surface of the to-be-printed object at the same time; and the pattern on the transfer printing roller is printed on the back surface of a to-be-printed object, a pattern on the upper printing roller is directly printed on the front surface of the to-be-printed object, the transfer printing roller is a rubber roller with the elastic surface, the radius of the upper printing roller is equal to the radius of the lower printing roller and equal to the working radius of the transfer printing roller, and the upper printing roller, the transfer printing roller and the lower printing roller are the same in rotating speed. The upper printing roller and the lower printing roller rotate in the same direction, and the transfer printing roller and the lower printing roller rotate in opposite directions.

Description

technical field [0001] The invention relates to the field of printing machines, in particular to a double-sided printing process. Background technique [0002] A printing machine is a machine that uses dyes or pigments to print patterns on textiles to be printed. At present, the main printing machines in the textile industry include rotary screen printing machines, flat screen printing machines and roller printing machines. The roller printing machine engraves the negative (or positive) pattern on the copper roller or the chrome-plated roller. Printing effect machines, roller printing machines in the prior art, are usually single-sided printing machines. When the object to be printed requires double-sided printing, it is necessary to print on the other side after printing on one side of the object to be printed, and If the double-sided patterns are different, different printing rollers need to be replaced for printing, which will consume a lot of time, resulting in prolonge...

AI Technical Summary

Problems solved by technology

The roller printing machine engraves the negative (or positive) pattern on the copper roller or the chrome-plated roller. Printing effect machines, roller printing machines in the prior art, are usually single-sided printing machines. When the object to be printed requires double-sided printing, it is necessary to print on the other side after printing on one side of the object to be printed, and If the double-sided patterns are different, different printing rollers need to be replaced for printing, so it will take a lot of time, resulting in prolonged working hours and low efficiency.

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