Color bags with customer requirements proofing color from, how to do?

Both single color printing color printing packaging, require the operator to use their eyes to print and pattern repeated comparison, as to find out the different of printing quality and model, timely correction, to ensure the quality of packaging printing. Here, professional manufacturer of flexible packaging packaging is combined with several from more than 20 years of printing factory, under the experience of the teacher to discuss how to cut the color packaging printing color difference. One, the strength of the light directly affect on the strength of the sample color looks light not only have an effect on color of light and shade, also will change color appearance. The same object, is a positive color in standard light source, if the light gradually stronger, its color also subsequently ming-liang xiang hue shift, light enhancement to a certain extent, can be any color to white. Black porcelain its glitter also is white, because the spot light concentration, and reflection. Similarly, the light is gradually reduced, all sorts of color XiangMingDu low hue changes, light reduced to a certain extent, any color will become dark, because is black objects do not reflect any light. Printing workshop see sample must conform to the requirements, the general requirement of illuminance reached around 100 lx, can correctly distinguish colors. Second, under the light see sample with light sample is there are differences in produce practice, mostly work in under the irradiation of power supply, and each light source is a certain color. This is to correctly judge the manuscript or product color brings certain difficulty, light color, the color change is generally the same color becomes shallow, complementary color darker. For example: red light color, light red, yellow orange, dark green, green dark, white and red. Under the green color, green becomes shallow, light green, yellow green yellow, red, black, white, green. Under the yellow color, light yellow, magenta red, blue, green, blue, black, white and yellow. Under the blue color, blue becomes shallow, becomes shallow green, dark green, black, white and blue. In the printing workshop, generally choose the color temperature is higher, 3500 k ~ 4100 k) , good color coefficient fluorescent lamp as the light source, but must pay attention to the fluorescent lamp slightly purple. Three, look at the samples to see printing quality and model, look at the print to see its effect will be slightly different in two times feeling when see a kind of color is not the same, this phenomenon is called successively color according to the reaction.