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A fully automatic pre-coloring method

A fully automatic, color registering technology, applied in the direction of printing, printing machines, general parts of printing machinery, etc., can solve the problems of time-consuming and labor-intensive, high scrap rate, etc., achieve high degree of automation, fast response to error correction, and less loss of pre-registered waste products Effect

Active Publication Date: 2019-02-26
SHAANXI BEIREN PRINTING MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fully automatic pre-registration method, which solves the problems of high reject rate, time-consuming and labor-intensive problems of manual operation in the pre-registration process in the printing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] Taking the pre-registration method of a five-color (five color groups in total) printing machine as an example

[0041] Start-up operation, tension input, ink distribution and other preparations before start-up. After the printing material is fed smoothly, the amount of ink is uniform, and the tension is stable, the printing machine is linked to print.

[0042] First read the preset phases of the five color groups:

[0043] PU1 (preset phase of the first color group): 0 PU2 (preset phase of the second color group): 29.7PU3 (preset phase of the third color group): 3.2PU4 (preset phase of the fourth color group): 304.1PU5 (the preset phase of the fifth color group): 376.1

[0044] The plate roller starts to be automatically positioned to the reading phase. After all the color groups are positioned, all the color combinations are pressed. Since each color group is equipped with a photoelectric eye, it can identify the color mark printed by the current color group. Durin...

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PUM

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Abstract

The invention discloses a full-automatic pre-color-register method. The full-automatic pre-color-register method comprises the following steps that color cell phases are preset, and a photoelectric eye is additionally arranged on a first color cell; a printing machine is started; all the color cells are positioned according to the preset phases; all the color cells are laminated; color codes of all the color cells are detected through photoelectric eyes on all the color cells, the condition that the color codes are not detected is processed till the color codes of all the color cells are detected; expect the first color cell, the code form longitudinal errors of the current color cells and the previous color cells are read by the photoelectric eyes on the rest of the color cells, and the condition that the longitudinal errors are not in the range of -5-5 mm is processed till the read longitudinal errors are in the range of -5-5 mm; and the longitudinal errors in the range of -5-5 mm are corrected, the longitudinal errors is corrected to be in the range of -2-2 mm, and the pre-color-register process is completed. By the adoption of the full-automatic pre-color-register method, the problem that manual operation is adopted for the pre-color-register in the printing process, and consequently the rejection rate is large is solved.

Description

technical field [0001] The invention belongs to the technical field of printing color registration and relates to a fully automatic pre-color registration method. Background technique [0002] For traditional electronic axis printing machines, the current electronic axis control system can realize automatic overprinting during the printing process, but in the early stage of printing, the operator needs to manually complete the pre-colouring work, which is subject to the operator's experience and accuracy Low, the scrap rate generated in the pre-color process is high, time-consuming and labor-intensive. Contents of the invention [0003] The purpose of the present invention is to provide a fully automatic pre-registration method, which solves the problems of high reject rate, time-consuming and labor-intensive problems of manual operation for pre-color registration in the printing process. [0004] The technical solution adopted in the present invention is a fully automati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F33/00
CPCB41F33/0036
Inventor 薛志成李征陈明辉
Owner SHAANXI BEIREN PRINTING MACHINERY
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