Proofing is the main process in the printing workshop. The accuracy of proofing is related to the level of production efficiency.

    (1) Proof: The purpose of proving is to let customers confirm and do some preparations before proofing.

    ① For the printing list issued by the business department, the samples should be reviewed first, and the appropriate dyes should be selected according to the different requirements of customers, such as light source, fastness, finishing, etc., and a reasonable process should be worked out. The proofing cloth must be consistent with the large-scale production. For special requirements such as bleached cloth, bleached semi-finished products must be used to improve the accuracy of copying; if there is a requirement for chlorine resistance, such as swimwear and hospital protective equipment, you should choose resistant Chlorine dyes are used for color matching; for processes that require anti-printing, overprinting, and dyeing, the selection of appropriate dyes and auxiliaries requires full-process proofing. If the process is changed, the sample must be re-proofed, and the sample-proofing prescription cannot be mixed.

    ② Make a confirmation sample. The original sample provided by the customer usually has the following situations.

    a. Fabric weave is different from mass production. In this case, a few more color samples with different shades and shades should be printed, divided into three different shapes A, B, and C for customers to choose.

    b. The original sample is a printed paper layout, sometimes with gloss, and sometimes with lines on the ground. Light-colored ones are generally easy to sample, and darker and brighter ones are more difficult to sample. Only a few more images can be printed for customers to confirm. If there are lines on the paper plate, consider it as a whole, and the big effect is enough.

    c. The original pattern is yarn, sometimes it is a yarn, sometimes it is multiple yarns, one is easier to match, and if there are many, it is considered as a whole, and the big effect is enough.

    d. If there are pros and cons, please confirm with the customer before proofing, so as not to delay production.

    ③The proofing color cards provided by customers generally have light source requirements, such as natural daylight, D65 light, and TL. , CWF, uV, etc.

    a. Choose standard light boxes, especially those whose tubes meet international standards, to reduce the color difference caused by different light sources.

    b. Sometimes customers require two light sources: primary light source and secondary light source. When encountering this situation, it is easy to cause obvious light jumping problems, and the main light source should be the main light source. Because the dye structure is different, the light source is different, and the reflectivity is different, choose a dye with good compatibility and similar dye migration. For example, when fighting green, reactive blue K-GL and reactive yellow K-6G are compared with reactive blue K-GL and yellow K. —RN spelled well.