The accurate knowledge that form code uses and presswork control essentials

Of form code presswork means and the problem that its should note

Of form code presswork means has two kinds, one kind is to collect affix an official seal to brush equipment to be opposite with presswork graph article spells those who add up to the layout of group edition to have lot to presswork. Another kind is control by the computer, timely undertake printing bar code label and bar code document. Former apply to an amount much, norms the bar code with fixed, same content, with outer packing graph article is designed at the same time and presswork. Latter can pass computer control, implementation is printed immediately by the requirement, flexibility is stronger. The bar code equipment that print has ink jet printer, heat quick printer, heat to turn imprint printer of printer, stroke type lattice and laser printer. Design norms requirement to ensure the bar code after pressworking is accorded with, should be versed in according to pressworking art characteristic of He Chengyin content, consider plate making craft.

Presswork like flexographic plate craft, can consider to reduce a line appropriately when plate making wide, presswork in order to make up for to be out of shape mediumly the amplification that cause deviation. Heat up shrink packaging material to pressworking, should consider the position with the located bar code after fine film is contractive, had calculated vertical, transverse contractive coefficient beforehand, so that be when plate making,undertake adjustment printed sheet according to contractive coefficient.

To facilitate the normal knowledge when using is read, should notice a form code presswork the choice of Chinese ink color. The knowledge of form code reads a system, setting scanner illuminant is the glow illuminant of wavelengh 630—700nm commonly, reason should consider the glow effect of Chinese ink color. The incident illumination of the scanner shoots the bar code surface in different material and color, the reflection result that produces is different also. Hei Mo can be absorbed completely to glow, imprint the reflectivity that tastes pair of incident light is in commonly 3% the following, so, most the code designs a form use Hei Moyan color to undertake pressworking. And Bai Mo to glow it is complete reflex, its imprint the reflectivity that tastes pair of incident light is adjacent at 100% , consequently, it is optimal blank coloring. Be based on afore-mentioned reasons, imprint tasting a form that go up to pile up great majority is to imprint on white paper directly. But, some package a product, set out from design and craft effect, also the choice uses other color to undertake pressworking, should notice to undertake collocation according to the property of color so. Normally tall to glow reflectivity color has yellow, orange, red, shallow brown etc, and green, black, violet wait with cyan, inferior to glow reflectivity. Reasonable design a form code to presswork color, should mature color is right the element such as the reflectivity of glow. Transparent filmy packing is unsuited presswork directly a form code, red of the Bai Mo on Ying Xianyin or yellow, orange makes underlay, next, imprint on a brunet form code, be like black, deep green, blue-black etc, facilitating knowledge reads such ability use.
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