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Imprint roller and method for manufacturing same

A manufacturing method and technology of embossing rollers, applied in printing, printing devices, typewriters, etc., can solve problems such as lower rubber ratio, poor hardness between concave and convex parts, and breakage

Pending Publication Date: 2022-05-20
KINOYOSHA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since hard powder particles are used, there is a difference in hardness between the concave part and the convex part
Moreover, if a large amount of powder particles are added, the rubber ratio of the portion where the powder particles are close to each other becomes low, and breakage is likely to occur due to repeated deformation caused by pressure contact with the thermal head.

Method used

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  • Imprint roller and method for manufacturing same
  • Imprint roller and method for manufacturing same
  • Imprint roller and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Primer No. 33 (manufactured by Shin-Etsu Chemical Co., Ltd.) was applied to the surface of the shaft body (diameter 5 mm×length 120 mm, SUS303).

[0068] Next, the silicone rubber compound KE-904F-U (manufactured by Shin-Etsu Chemical Industry, hardness 45°, density 1.15) and KE-7170-U (manufactured by Shin-Etsu Chemical Industry, hardness 70°, density 1.18) were mixed at 80:20 Proportionally mixed to obtain a silicone rubber mixed compound (raw rubber: hardness 50°). 3 parts by weight of dicumyl peroxide as a vulcanizing agent, 0.5 parts by weight of finely pulverized AIBN (azobisisobutyronitrile) as a foaming agent, and 1 part by weight of iron oxide paste was mixed with an open mill to prepare a silicone rubber composition.

[0069] Next, the shaft body and the silicone rubber composition were integrally extruded using an extrusion molding machine, and the silicone rubber composition was molded into a cylindrical shape on the outer periphery of the shaft body.

[0...

Embodiment 2

[0075] The foamed elastic layer was formed using the following silicone rubber composition, which was made of the same silicone rubber compound KE-904F-U as in Example 1 (manufactured by Shin-Etsu Chemical Co., Ltd., hardness 45°, density 1.15 ) and KE-7170-U (manufactured by Shin-Etsu Chemical Co., Ltd., hardness 70°, density 1.18) at a ratio of 40:60 to the silicone rubber mixed compound (raw rubber: hardness 60°), which is used as a foam An embossing roller was produced by the same method as in Example 1 except that the resin microspheres FN-100MD (manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) of 1.5 parts by weight were used.

[0076] The foamed elastic layer of the obtained embossing roll had a foaming ratio of 171%, an average foamed cell diameter of 131 μm, an average thickness of the non-adhesive layer of 63 μm, and an arithmetic average roughness Ra of 4.63 μm.

Embodiment 3

[0078] The foamed elastic layer was formed using a silicone rubber composition obtained by adding 0.6 parts by weight of AIBN to 100 parts by weight of the same KE-7170-U (raw rubber: hardness 70°) as in Example 1. An embossing roll was produced by the same method as in Example 1 except that the average thickness of the non-adhesive layer was set to 54 μm.

[0079] The foamed elastic layer of the obtained embossing roller had an expansion ratio of 162%, an average foamed cell diameter of 218 μm, and an arithmetic average roughness Ra of 8.85 μm.

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Abstract

The invention relates to an imprint roller and a manufacturing method thereof. The purpose of the present invention is to provide an imprint roller for a label printer, which is used for printing and issuing a linerless label, while maintaining peeling performance with respect to the linerless label, and which has excellent transportability and printability. An imprint roller according to the present invention is provided with: a shaft body; the foaming elastic layer is arranged on the periphery of the shaft body, and a plurality of foaming bubble holes are formed in the surface of the foaming elastic layer; and a non-adhesive layer in an unpolished state, which is provided on the outer peripheral surface of the foamed elastic layer, and which has a concavo-convex portion that imitates the plurality of foamed cells opened in the foamed elastic layer.

Description

technical field [0001] The invention relates to a platen roller for a label printer. Background technique [0002] Label printers that print stickers and labels use a thermal head printing method, and there are thermal transfer types that use ink ribbons and thermal types that use labels with heat-sensitive color-forming layers. . In these printing methods, an embossing roller provided with an elastic body such as rubber on a shaft body is arranged on the facing surface of the thermal head. The label is conveyed by the platen roller, and the label is brought into contact with the thermal head to perform printing. [0003] Labels used in label printers have an adhesive layer and a liner on the back of the substrate. Since this label is attached by peeling off the backing paper at the time of use, the peeled backing paper is discarded as garbage. [0004] In recent years, linerless labels that do not use a liner have been used for the purpose of saving resources and reduci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J11/04
CPCB41J11/04B41J3/4075
Inventor 北中辰也江端恭平
Owner KINOYOSHA CO LTD
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