The review of color matching samples is an important means and basis for formulating and modifying the amount of printing paste dyes and whether to continue proofing. Correct and reasonable color matching and sample review is conducive to the work of making small samples. The color light should be checked under a reasonable light source. It is most suitable to be carried out under the illuminance of 7501x on the cloth surface, which is equivalent to the illuminance of three 40WEl light lamps with a cover at a distance from the cloth surface. The intensity and hue of the lamp should also be uniformly specified. If natural light is used, the light from the north window is better, because this kind of light is softer and has no effect of glare. Check the shade of the cloth sample, which should be done after drying and cooling. Because the damp cloth contains a certain amount of moisture, light refraction errors will occur. Certain dyes tend to fade when heated. In addition, the kanban should not be watched for too long, otherwise it will cause errors due to eyesight fatigue. After the color matching sample is deemed to meet or basically meet the color requirements of the pattern, the color matching prescription will be considered. When formulating the color matching formula, it is advisable to refer to the dye dosage of the sample printed and make corrections in accordance with the actual situation in printing. In actual production, due to the pattern structure, the front and back arrangement of the flower tube, the corrosion depth of the flower tube, the different printing process and the tightness of the printed fabric tissue, etc., the printing paste printing of the same dye dosage prescription will be caused, but the result is different. According to actual production experience, there are generally the following rules:

    (1) The pattern structure is different, the amount of dye is the same. The dots, lines, and small blocks have a shallower carving depth and less slurry content, so the color is light; relatively large blocks and full-flooded patterns The depth of flower tube carving should be deeper, with more pulp content and darker color.

    (2) Whether the same color is overprinted or not, the resulting color is also different. The darker color is embossed with a lighter color of the same kind, and the resulting color is light. In order to distinguish the pattern level, the amount of dye for the darker color should be increased by 50%.

    (3) The arrangement of the flower tube is different . The printing paste arranged in the front position will be lighter in color after the printing paste arranged in the front position, and the color obtained in the rear side will be darker.

    (4) The corrosion depth of the flower tube is different, the lighter corrosion is lighter, and the deeper corrosion is darker.

    (5) The printing process is different, and the color is not consistent. For example, the reactive dye is darker with sodium alginate paste, and lighter with synthetic dragon gum paste.

    (6) Different printed fabrics have different colors. The color of tight fabrics (such as poplin) is lighter than ordinary plain fabrics.

    When formulating a color matching prescription, the actual situation should be considered as appropriate to increase or decrease the amount of dye to ensure the smooth progress of printing production.