Method for engraving gravure roller

Abstract

A method for engraving a gravure roller comprises the following steps that: (1) a design pattern is processed in order to be consistent with a target pattern; (2) the height of the design pattern is stretched to be N times that of the target pattern, where N=1.1 to 1.5; (3) the circumferential size of a voucher file is set to be N times that of a version roller according to the height value of the design pattern stretched in step (2) to manufacture the voucher file; and (4) the voucher file is transmitted to an electronic engraving machine; and the electronic engraving machine firstly performs screening according to the circumferential size of the voucher file and then compresses and engraves the stretched design pattern along the circumference direction to the cylindrical surface of the version roller in an automatic seamless connection way to obtain the gravure roller, wherein the compression ratio is 1 / N. The product printed by the gravure roller manufactured by the method can meet the requirements on both the clarity and ink content of the printed pattern.

Description

technical field

[0001] The invention relates to a printing plate manufacturing process, in particular to an engraving method for a gravure roll. Background technique

[0002] Gravure printing is a commonly used printing process at present. Its printed products have the advantages of thick ink layer, bright colors, and can truly reproduce the effect of the original manuscript. It can also be printed with relatively environmentally friendly inks such as water-based inks and alcohol-soluble inks, and is widely used. Plastic film, paper, composite materials and other substrates.

[0003] The production process of the gravure plate roller is mainly electronic engraving. The existing engraving method generally includes the following steps: (1) According to the requirements of the entrustment letter for plate making, the design pattern is processed (such as cutting), so that the design pattern is consistent with the target. The pattern (the target pattern refers to the pattern fin...

Examples

Embodiment

[0025] Combine below figure 1 The engraving method of the gravure roll of the present invention is described in detail.

[0026] In the present embodiment, the engraving method of gravure plate roll comprises the following steps:

[0027] (1) Process the design pattern (such as cutting) according to the requirements of the plate-making power of attorney, so that the design pattern 1 is consistent with the size of the target pattern;

[0028] The above design pattern 1 is designed according to the target pattern to be printed, and the design pattern 1 adopts a tiff image with a resolution of not less than 600dpi;

[0029] The size of the processed design pattern 1 is the size required on the plate-making power of attorney; the pattern size includes the width and height of the pattern, where the width of the pattern is the size of the pattern in the axial direction of the plate roller body, and the height of the pattern is the size of the pattern on the plate. Dimensions in th...

technical field

[0001] The invention relates to a printing plate manufacturing process, in particular to an engraving method for a gravure roll. Background technique

[0002] Gravure printing is a commonly used printing process at present. Its printed products have the advantages of thick ink layer, bright colors, and can truly reproduce the effect of the original manuscript. It can also be printed with relatively environmentally friendly inks such as water-based inks and alcohol-soluble inks, and is widely used. Plastic film, paper, composite materials and other substrates.

[0003] The production process of the gravure plate roller is mainly electronic engraving. The existing engraving method generally includes the following steps: (1) According to the requirements of the entrustment letter for plate making, the design pattern is processed (such as cutting), so that the design pattern is consistent with the target. The pattern (the target pattern refers to the pattern fin...

Examples

Embodiment

[0025] Combine below figure 1 The engraving method of the gravure roll of the present invention is described in detail.

[0026] In the present embodiment, the engraving method of gravure plate roll comprises the following steps:

[0027] (1) Process the design pattern (such as cutting) according to the requirements of the plate-making power of attorney, so that the design pattern 1 is consistent with the size of the target pattern;

[0028] The above design pattern 1 is designed according to the target pattern to be printed, and the design pattern 1 adopts a tiff image with a resolution of not less than 600dpi;

[0029] The size of the processed design pattern 1 is the size required on the plate-making power of attorney; the pattern size includes the width and height of the pattern, where the width of the pattern is the size of the pattern in the axial direction of the plate roller body, and the height of the pattern is the size of the pattern on the plate. Dimensions in th...

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