A process for controlling the color difference in printing

Abstract

The present invention discloses a process for controlling the color difference in printing, comprising the following steps: S1, first perform color separation according to the product printing sequence; S2, make a color block at the lower left corner of the color-separated graphic according to the color registration. The independent color is a separate color block. If the color needs to be presented by superposition, several independent color blocks are required for superposition; S3, cut the color block for color matching. The cut color block can be marked and reserved to form traceability; S4, perform process control on each color block to avoid color difference in printing color registration. The present invention can control the color of the ink in the printing stage, avoid causing batch color difference defects, effectively control the color of each color registration, provide guarantee for the color consistency of each batch, reduce losses and improve the equipment operation rate. Improve the product yield, reduce the ink usage, and is beneficial to environmental protection.

Description

Technical Field

[0001] The present invention relates to a process for controlling the color difference of printed colors. Background Art

[0002] In the decoration industry, color difference has always been among the top three categories of defects. It is also the front end of the product process. Poor control in the front-end printing may cause batch scrapping in the subsequent processes, resulting in losses to the enterprise and affecting customer delivery schedules and reputation.

[0003] Currently, ink formulators in the industry control by color ratio. Affected by equipment, temperature, humidity and other factors, color differences occur in each batch of colors and cannot be effectively controlled. Often, the color is adjusted in the last version after the color difference appears. After high-temperature injection molding in the subsequent process, color bleeding will occur, resulting in batch defects. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect that color differences occur in each batch of colors during ink formulation in the prior art and cannot be effectively controlled, and to provide a process for controlling the color difference of printed colors.

[0005] To solve the above technical problem, the present invention provides the following technical solutions:

[0006] A process for controlling the color difference of printed colors, comprising the following steps:

[0007] S1. First, separate colors according to the product printing sequence;

[0008] S2. Make a color block at the lower left corner of the separated graphic according to color overlay. Independent colors are separate color blocks. If colors need to be presented by overlay, several independent color blocks for the overlaid colors are required for overlay;

[0009] S3. Cut the color block for color matching. The cut color block can be marked and reserved for traceability;

[0010] S4. Conduct process control on each color block to avoid color differences in printed color overlay.

[0011] Further, in S1, according to different colors of the product, and in accordance with the design principle of from dark to light and from main to secondary for colors, the colors of the product are separated successively.

[0012] Further, the size of the color block in S2 is 12*12 mm.

[0013] Further, in S4, if the second version covers the color of the first version, the color block of the second version consists of two color blocks. The first color block of the second version overlaps with the color block of the first version, and the second color block of the second version is its own printed color. The first color block of the second version is the color after overlapping with the first version's printing. When controlling the color, both color blocks need to be tested. If the color to be displayed by the second version does not overlap with the first version, the second version only requires one color block, and so on. The production of color blocks is carried out according to whether the colors are superimposed.

[0014] Further, during proofing or production, when the product is printed to a certain version, one is extracted, and the corresponding color block is cut out for tracking the color batch of each production.

[0015] The beneficial effects achieved by the present invention are as follows: The present invention can control the color of the ink during the printing stage, avoid causing batch color difference defects, effectively control the color of each set of colors, provide guarantee for the color consistency of each batch, reduce losses and improve the equipment operation rate. It improves the product yield, reduces the ink usage, and is beneficial to environmental protection. Specific Embodiments

[0016] The following describes the preferred embodiments of the present invention. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. Embodiment

[0017] A process for controlling the color difference in printing includes the following steps:

[0018] S1. First, perform color separation according to the printing order of the product; according to the different colors of the product, following the design principle of from deep to light and from main to secondary for colors, gradually separate the colors of the product.

[0019] S2. Make a 12*12mm color block at the lower left corner of the color-separated graphic according to the color sets. Independent colors are separate color blocks. If colors need to be superimposed to present, several independent color blocks are required for superposition.

[0020] S3. Cut the color block for color matching. The cut color block can be marked and reserved to form traceability.

[0021] S4. Conduct process control on each color block to avoid color difference in printing color sets.

[0022] If the second version covers the color of the first version, the color patches of the second version are two color patches. The first color patch of the second version overlaps with the color patch of the first version. The second color patch of the second version is its own printed color. The first color patch of the second version is the color after overlapping with the printing of the first version. When controlling colors, it is necessary to test the two color patches. If the color to be displayed in the second version does not overlap with the first version, the second version only needs one color patch, and so on. The production of color patches is carried out according to whether there is color superposition.

[0023] During proofing or production, when the product is printed to a certain version number, one sheet is extracted, and the corresponding color patch is cut out for color batch tracking of each production.

[0024] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A process for controlling the color difference of printed colors, characterized in that, It includes the following steps: S1. First, perform color separation according to the product printing order; according to the different colors of the product, following the design principle of starting from the darker color to the lighter color and from the main color to the secondary color, separate the colors of the product one by one; S2. Make a color block at the lower left corner of the color-separated graphic according to the overprint. The independent color is a separate color block. If the color needs to be presented by superposition, several superposed colors require independent color blocks for superposition; S3. Cut the color block for color matching. The cut color block can be marked and reserved for record, forming traceability; S4. Conduct process control on each color block to avoid color difference in printing overprint. If the second version covers the color of the first version, the color block of the second version consists of two color blocks. Moreover, the first color block of the second version overlaps with the color block of the first version, and the second color block of the second version is its own printed color. The first color block of the second version is the color after overlapping with the printing of the first version. When conducting color control, it is necessary to test the two color blocks. If the color to be displayed in the second version does not overlap with the first version, the second version only requires one color block, and so on. Make color blocks according to whether the colors are superposed.

2. The process for controlling the color difference of printed colors as described in claim 1, wherein, The size of the color block in S2 is 12*12mm.

3. The process for controlling the color difference of printed colors according to claim 1, characterized in that, During proofing or production, when the product is printed to a certain version, extract one copy and cut the corresponding color block for tracking the color batch of each production.