Plate-making method and system capable of automatically adjusting reduction ratio

Abstract

The invention discloses a plate-making method and system capable of automatically adjusting reduction ratio. The method comprises the steps of performing format conversion treatment on an original picture according to original dimensions, and performing grouping treatment on the format conversion result based on coordinate identification to obtain a transverse dot matrix data set; establishing an adjusting model, and then inputting the obtained plate-making reduction ratio parameters, the radius data of a to-be-used plate-making roller, and the length and thickness of a to-be-used plate into the adjusting model to output exposure frequency parameters; and performing exposure treatment on the to-be-used plate according to the transverse dot matrix data set and the exposure frequency parameters to obtain an exposure plate. By adoption of the plate-making method and system, it is ensured that the number of the plate-making result pixel points is unchanged while dimensional deviation caused by plate stretching can be corrected to enable a bitmap picture to be not distorted; and meanwhile, troublesome caused by repeated manufacturing of new bitmap pictures is avoided, so that comparison difficulty of post-period files is lowered, the printing effect is reinforced, and production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of printing plate making, in particular to a plate making method and system for automatically adjusting shrinkage. Background technique [0002] CTP (Computer-to-plate) is offline direct plate making. CTP is the computer directly to the printing plate, which is a digital printing plate imaging process. Computer-to-plate-making uses a digital workflow to directly convert text and images into numbers and directly generate printing plates, eliminating the need for film as a material, the process of manual imposition, and the semi-automatic or fully automatic printing process. Before plate making, the user needs to convert a certain target image into TIFF format, and then download the TIFF file data to the plate making machine through the customized output software. After the plate-setting machine receives the data, it will output the image. After the output, the image will be presented on the plate in the for...

AI Technical Summary

Problems solved by technology

Then the user needs to make a new TIFF file, so that there are certain limitations in direct plate making, which not only increases the production time, but also reduces the production efficiency.

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