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A method for eliminating paper edge laser interference and paper roll instability

A kind of laser paper and laser technology, which is applied to the general parts of printing machinery, printing, printing machines, etc., can solve the problems of the influence of tension stability of the overall printing unit, affect the final pass rate of products, and the low precision of overprinting B system. Overprinting consumption, avoiding overprinting waste, and eliminating the effect of laser interference on the edge of the paper

Active Publication Date: 2022-07-05
SHANXI JINYE PRINTING CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after adding paper white or silver edges, the paper consumption per unit product increases, and the product cost increases
[0004] When adding a dark reference cursor to solve the problem of overprinting in light colors, the relative accuracy of the overprinting B system (encoder calculation) is low, and the deviation correction speed is slow, which affects the tension stability of the overall printing unit, the overall overprinting accuracy decreases, and overprinting waste increases, which affects the product Final pass rate

Method used

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  • A method for eliminating paper edge laser interference and paper roll instability
  • A method for eliminating paper edge laser interference and paper roll instability
  • A method for eliminating paper edge laser interference and paper roll instability

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specific Embodiment approach

[0031] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with this technology, and are not used to limit the conditions that the present invention can be implemented. , any modification of the structure, the change of the proportional relationship or the adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in the present invention can cover .

[0032] At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and clarity, and are not used to limit this specification. The implementable scope of the invention, and the change or adjustment of the relative relat...

Embodiment 1

[0034] The invention discloses a method for eliminating paper edge laser interference and paper roll instability, comprising the following steps:

[0035] Step 1: Pre-print the edge of the substrate laser paper to obtain pre-printed color bars;

[0036] Step 2: Overprint the white bar on the pre-printed color bar, the white bar is the same shape and size as the pre-printed color bar;

[0037] Step 3: Make a void cursor on the white bar, and the void cursor is used as a white cursor;

[0038] Step 4: Overprint the remaining cursor of the printed product on the white bar;

[0039] Step 5: Set the overprint tracking in the automatic overprint system;

[0040] Step 6: Overprint compensation to complete accurate overprinting.

Embodiment 2

[0042] Preferably, in the step 1, the pretreatment of color printing on the edge of the laser paper of the substrate is to use a printing unit to perform non-overprint coating on the edge of the laser paper, the thickness of the coating ink layer is 70 lines of 55 μm, and the coating width is 13 ~15mm.

[0043] Preferably, in the step 1, the pre-printed color bars are printed silver or gray ink, and the pre-printed color bars are made by a gravure silver ink or gray ink printing process.

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Abstract

The invention discloses a method for eliminating paper edge laser interference and web paper tension instability, comprising the following steps: Step 1: pre-printing the edge of the substrate laser paper to obtain pre-printed color bars; Step 2: in A white bar is superimposed on the pre-printed color bar, and the white bar has the same shape and size as the pre-printed color bar; Step 3: Make a void cursor on the white bar, and the void cursor is used as a white cursor; Step 4: Use the remaining cursor of the printed product Overprint on the white strip; Step 5: Set the overprint tracking in the automatic overprint system; Step 6: Overprint compensation to complete accurate overprinting.

Description

technical field [0001] The invention belongs to the technical field of roll paper gravure packaging and printing, and in particular relates to a method for eliminating paper edge laser interference and roll paper force instability. Background technique [0002] In the field of gravure packaging printing, laser transfer paper printing and base color printing or light color that is difficult to identify are often encountered. The existing overprint scanning system scanning photoelectric system will be interfered by the laser reflection on the surface of the substrate to generate error signals, resulting in unstable tension during the printing process. , resulting in a large number of overprint waste. At present, in the field of gravure packaging printing, when it comes to the interference of laser paper edge on overprinting and the small color difference between the reference color and the substrate, the methods consistently adopted are: 1. Use wider paper format, and increase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M1/10B41F33/00
CPCB41M1/10B41F33/0036B41F33/0027
Inventor 李海山院国军苏元聪梁栋唐海艳
Owner SHANXI JINYE PRINTING CO LTD
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