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Magnetic recording medium and magnetic recording medium manufacturing method

A technology of magnetic recording medium and manufacturing method, which is applied in the directions of magnetic recording, data recording, and record carrier manufacturing, etc., can solve the problems of not being able to say that the production efficiency is good, that the original function of the pattern cannot be fully exerted, and the signal characteristics are degraded.

Active Publication Date: 2007-08-29
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when it is necessary to modify the pattern after the transfer laminate for forming the patterned magnetic stripe is completed, the pattern cannot be modified in a short time, and the pattern modification will cause a large delay in delivery and a deterioration in efficiency.
[0015] When forming a pattern on the magnetic recording layer of the magnetic recording medium as described above, there are many cases where the signal characteristics are lowered along with the high designability, and the original function of the pattern cannot be fully exerted.
[0016] In addition, the production efficiency of the existing patterned magnetic recording medium cannot be said to be good.

Method used

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  • Magnetic recording medium and magnetic recording medium manufacturing method
  • Magnetic recording medium and magnetic recording medium manufacturing method
  • Magnetic recording medium and magnetic recording medium manufacturing method

Examples

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Effect test

Embodiment 1

[0257] Use a polyethylene terephthalate film with a thickness of 24 μm as a temporary support for transfer, and use a reverse coater to sequentially coat and dry the above-mentioned anti-patterning agent diffusion layer on one side of the film. The paint, the paint for the colored layer, the paint for the magnetic recording layer, and the heat-sensitive adhesive paint are respectively provided with an anti-patterning agent diffusion layer, a colored layer, a magnetic recording layer, and a heat-sensitive adhesive layer. The film thickness after drying of each layer was 1 μm for the anti-patterning agent diffusion layer, 4 μm for the colored layer, 9 μm for the magnetic recording layer, and 1.5 μm for the thermosensitive adhesive layer.

[0258] As shown in FIG. 6 , the pattern ink [A] was pattern-printed on the heat-sensitive adhesive layer of the transfer material prepared above by gravure printing so that the film thickness of the pattern portion was 1 μm. Then, it was left ...

Embodiment 2

[0261] A magnetic card was produced in the same manner as in Example 1, except that the pattern-forming ink [B] was used as the pattern-forming ink in the pattern printing of Example 1.

Embodiment 3

[0263] A magnetic card was produced in the same manner as in Example 1, except that the pattern-printed transfer laminate for magnetic stripe formation was not left to stand in a high-temperature chamber at 60° C. for 24 hours in the pattern printing of Example 1.

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Abstract

The magnetic recording medium of the present invention has a pattern formed using a pattern-forming agent in a laminate of multiple layers including a base material and a magnetic recoding layer, wherein the pattern is recognized on the surface of the laminate opposite to the base material, and the pattern-forming agent is distributed through the thickness of the laminate, wherein a region between the center of the magnetic recording layer and a magnetic recording-reading side of the laminate has an area having a density gradient of the pattern-forming agent which gradually declines in the direction from the center of the magnetic recording layer to the magnetic recording-reading side.A magnetic recording medium has a picture formed by a picture forming reagent in a layered body formed by a plurality of layers including a basic layer and a magnetic recording layer. The picture can be recognized from a surface of the direction opposite to the basic layer of the layered body. The picture forming reagent is distributed in the film thickness direction and has a region having a concentration gradient gradually decreasing toward the direction of the magnetic recording reading side from the center portion of the magnetic recording layer in the region of the read side from the center portion of the magnetic recording layer in the layered body.

Description

technical field [0001] The present invention relates to a magnetic recording medium formed by stacking a plurality of layers including a base material layer and a magnetic recording layer and having a pattern recognizable from the magnetic reading side of the magnetic recording layer, a method for manufacturing the magnetic recording medium, and a magnetic recording medium for use in the magnetic recording medium. A laminate for transfer in a method for producing a magnetic recording medium. In particular, it relates to a magnetic recording medium in which a card-shaped magnetic recording medium such as a credit card or a bank card is formed by laminating a layer including a magnetic recording medium layer on a base material layer for a card, and a pattern recognizable from the magnetic reading side is formed on the magnetic stripe portion. A medium, a method of manufacturing the magnetic recording medium, and a transfer laminate used in the method of manufacturing the magneti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B42D15/10G06K19/06G11B5/80G11B5/84B42D25/45
CPCG06K19/06196G11B5/80G11B5/70B42D25/45G06K19/06G11B5/84
Inventor 山崎嘉一矢野大辅
Owner DIC CORP
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