Trapping method and trapping system including gradient blocks

A technology of trapping and color blocks, applied in the direction of image communication, electrical components, etc., to achieve the effect of improving quality

A technology of trapping and color blocks, applied in the direction of image communication, electrical components, etc., to achieve the effect of improving quality

CN102404491AActive Publication Date: 2012-04-04方株(武汉)科技有限公司
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  • Trapping method and trapping system including gradient blocks
  • Trapping method and trapping system including gradient blocks
  • Trapping method and trapping system including gradient blocks

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Experimental program
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Embodiment Construction

[0039] The present invention will be described in detail below with reference to specific embodiments and drawings.

[0040] figure 2 The structure of the trapping system including gradation color blocks described in this embodiment is shown. Such as figure 2 As shown, the system includes an acquisition device 21, a judgment device I22 connected to the acquisition device 21, a judgment device II23 connected to the judgment device I22, a connection device 24 connected to the judgment device II23, a generating device 25 connected to the connection device 24, The dividing device 26 connected to the generating device 25 and the color filling device 27 connected to the dividing device 26.

[0041] The acquiring device 21 is used to scan all the color blocks in the object to be trapped, and acquire the common boundary of all adjacent color blocks. Among them, the object to be trapped contains gradual color blocks, that is, color blocks whose colors gradually change.

[0042] The judgin...

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Abstract

The invention discloses a trapping method and a trapping system including gradient blocks, which belong to the technical field of trapping in package printing. An existing trapping method can easily cause gaps between gradient trapping areas and between the gradient trapping areas and non-gradient trapping areas. The trapping method and the trapping system comprise the following procedures: firstly obtaining the shared borders of all the adjacent gradient blocks of an object to be trapped; judging whether each public border is a trapping border; judging the trapping directions of the trapping borders, and if the trapping borders are gradient trapping borders, judging the trapping directions of endpoints of the trapping borders; connecting the adjacent trapping borders according to the trapping directions of the trapping borders and the endpoints of the gradient trapping borders; generating the trapping areas; dividing the trapping areas; and finally filling colors in the divided trapping areas. The trapping method and the trapping system can effectively avoid the gaps and improve printing quality.

Description

Technical field [0001] The invention relates to a trapping method and system, in particular to a trapping method and system containing gradient color blocks, and belongs to the technical field of trapping in packaging printing. Background technique [0002] In the printing process, inaccurate registration often occurs during multi-color overprinting. Overprinting refers to printing when the corresponding area of ​​the previous color plate is hollowed out (Knockout), so inaccurate overprinting is prone to occur. Due to inaccurate overprinting, some small leaks will appear at the boundary of two adjacent color blocks, which is very unsightly. In order to avoid the occurrence of leakage, it is necessary to generate some small overlapping areas between the edges of different objects, that is, trapping areas, so that the human eyes cannot detect these leakages. The above processing method is called trapping. [0003] In the printing industry, trapping is customarily called trapping, ...

Claims

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Application Information

Patent Timeline
04 Apr 2012
Publication
CN102404491A
IPC
H04N1/58
Inventors
郭海; 刘敏