Hunan Sealing Adhesive Printing Company believes that there can be the following distinctions based on the number of printing colors:

(1) Monochrome printing: not limited to black, it applies to all printing materials displayed in one color. Poly Color Printing can be divided into three categories: Casing Method, Register Method, and Multi color Method.

The color enhancement method involves adding another color within the double line range of a monochrome image to enhance its clarity and brightness, making it easier to read. Generally, children's books are often used for brushing; Coloring method refers to the process where each color is independent, does not overlap with each other, and has no other color as the boundary line of the printing range. It is formed by sequentially printing on the printed material. Printing of general line charts, product packaging paper, and terrain is often used.

(2) Changsha sealing sticker printing color printing: that is, multi-color printing, based on the color light additive color mixing process, the natural color original is decomposed into primary color separation plates, and then the pigment subtractive color mixing process is used to reprint the primary color plates on the same printed material. The natural color printed product of the original is obtained due to the difference in the overlapping area of the primary colors. All color printed materials, except for a few color enhancement and color matching methods, belong to the multi-color printing method.

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