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Collision net detection method before mixed printing plate making with different resolutions

A detection method and resolution technology, which is applied in the field of web collision detection before mixed printing plate-making with different resolutions, can solve problems such as the inability to detect web collisions, achieve low cost, improve quality, and avoid defective products

Active Publication Date: 2020-02-14
上海紫恩数码科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing digital samples are all output with the same precision, so it is impossible to detect the collision phenomenon

Method used

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  • Collision net detection method before mixed printing plate making with different resolutions
  • Collision net detection method before mixed printing plate making with different resolutions
  • Collision net detection method before mixed printing plate making with different resolutions

Examples

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Embodiment Construction

[0025] The screening angle of the design draft of this embodiment is as follows before printing: CMYK adopts the conventional screening angle of flexo printing: C: 67.5°, M: 37.5°, Y: 82.5°, K: 7.5°; Purple as the background color) is the same angle as K: 7.5°, and the number of plate-making lines is 100L.

[0026] RIP the design draft twice, the resolution of the first RIP processing is 2540dpi, and the first RIP output file package is obtained; the resolution of the second RIP processing is 4000dpi, and the second RIP output file package is obtained.

[0027] Select the CMYK RIP output files of various colors (resolution 2540dpi) in the first RIP output file package and the purple background RIP output files (resolution 4000dpi) in the second RIP output file package, put them into a new file package and merge them into a third RIP output file package.

[0028] Use the third RIP output file package to carry out digital proofing, and observe whether the digital sample has the...

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Abstract

The invention discloses a detecting method for a different-resolution combination printing plate-making front Moire. The detecting method comprises the following steps: A, carrying out two-time RIP processing on a layout at different resolutions to respectively obtain a first RIP output file package with first resolution features and a second RIP output file package with second resolution features, wherein the layout is required to be printed by CMYK at the first resolution, and a ground color adopts special color and is printed at the second resolution; B, selecting different-color RIP outputfiles CMYK output files in the first RIP output file package and special color RIP output files in the second RIP output files and combining the files to form a third RIP output file package; C, digitally proofing by using the third RIP output file package and observing whether a digital sample has the Moire phenomenon or not. The detecting method disclosed by the invention can detect whether different-resolution combination printing has the Moire phenomenon or not by a digital proofing mode.

Description

technical field [0001] The invention belongs to the technical field of printing, and relates to a method for detecting web collision before mixed printing plates with different resolutions. Background technique [0002] The screen angles used before printing for a flexo printing product in actual printing are as follows: CMYK adopts the conventional screen angles of flexo printing: C: 67.5°, M: 37.5°, Y: 82.5°, K: 7.5°; color purple as the background color) and K at the same angle: 7.5°, and the number of plate-making lines is 100L. Adopt real dots to simulate ordinary CDI plate making output precision 2540dpi output, print digital samples to simulate flexo printing dots are normal without collision screen, digital samples are as follows figure 1 shown. [0003] The above digital samples are output at 2540dpi resolution (C: 67.5°, M: 37.5°, Y: 82.5°, K: 7.5°, purple background: 7.5°). There is no problem with the true dots; but the feedback in the actual printing sample is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41C1/12B41C1/14
CPCB41C1/12B41C1/14
Inventor 汤建鸣何春晓燕红波
Owner 上海紫恩数码科技有限公司