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Magnetic recording medium and its manufacturing method

A technology for a magnetic recording medium and a manufacturing method, applied in the directions of magnetic recording, magnetic recording layer, data recording, etc., can solve the problems of reduced recording and reproduction characteristics of the magnetic recording layer, excessively thick film thickness, etc., and achieves high designability and improved flashing. Sensation, the effect of improving the appearance design

Active Publication Date: 2010-12-08
DAINIPPON INK & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in order to conceal the base layer, the metal layer described in this cited document needs a considerable film thickness, and when the composition of this layer is applied to a magnetic card as it is, the film thickness of the concealment layer and the bright coating layer is too thick, and the magnetic recording layer A drastic reduction in the recording and reproduction characteristics of the unavoidable

Method used

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  • Magnetic recording medium and its manufacturing method
  • Magnetic recording medium and its manufacturing method
  • Magnetic recording medium and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0226] A 24μm thick polyethylene terephthalate film was used as the base material for replication, and the above-mentioned protective layer paint and bright coating layer were sequentially applied on one side of the film using a reverse coater. Paint [A], paint for light reflection quantity adjustment layer [A], paint for magnetic recording layer and adhesive paint, dry, respectively set protective layer, bright coating layer, light reflection quantity adjustment layer, magnetic recording layer and Adhesive layer. The film thickness of each layer after drying was formed such that the protective layer was 1 μm, the bright coating layer was 3 μm, the light reflection amount adjustment layer was 0.3 μm, the magnetic recording layer was 9 μm, and the adhesive layer was 1.5 μm. The film provided with the above-mentioned layers was cut to a width of 1 / 2 inch to produce a laminate for replication.

[0227] Using the copy laminate (replication tape) made as described above, the laminate...

Embodiment 2～ Embodiment 25、 comparative example 1～ comparative example 11

[0229] Except that the following table 1 is used, the rest is the same as in Example 1, the copy laminates of Example 2 to Example 25 and Comparative Example 1 to Comparative Example 11 are produced, and are copied onto a card substrate and then hot pressed to produce a card Shaped magnetic recording medium.

[0230] ·Evaluation method

[0231] (Saturation)

[0232] The luminance (L) and chromaticity (a * , B * ), find the saturation C * = (a *2 +b *2 ). In addition, the larger the brightness value, the brighter the color, and the larger the saturation value, the more vivid the color.

[0233] (Diffuse reflectance)

[0234] The magnetic stripe part of the obtained magnetic card, that is, the area with the bright coating layer, was measured at each wavelength by the integrating sphere method of "Shimadzu Self-recording Spectrophotometer UV-3100" manufactured by Shimadzu Corporation. Wavelength 400nm The diffuse reflectance in incident light in the visible light range of ~700 nm, and ...

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Abstract

The invention provides a card-like magnetic recording medium comprising a layer containing a magnetic recording layer and laminated on at least part of a non-magnetic support, characterized in that a light reflection quantity regulating layer containing at least one of scaly metal powder and metal thin-film strips and a binding resin is provided on the magnetic recording layer, a bright coating layer containing bright particles is provided thereon, and the maximum reflectance of a diffuse reflection light by an incident light at a wavelength of 400-700 nm in an area having the bright coating layer is 20-70%.

Description

Technical field [0001] The present invention relates to a card-shaped magnetic recording medium having a novel metallic appearance, a method of manufacturing the magnetic recording medium, and a copy laminate for manufacturing the magnetic recording medium. In more detail, it relates to a card-shaped magnetic recording medium that has a high-brightness, flicker-forming brilliance based on multidirectional reflection of luminous particles, and an easy adjustment of the brightness and chroma of the background color. Background technique [0002] In recent years, magnetic cards with high design requirements, such as credit cards and bank cards, have used card designs with a sense of brilliance that create flicker. It applies bright particles used in automobile bodies and the like to a card substrate. As bright particles, particles coated with a flaky substrate using glass or the like as a base material are used as the bright particles. By arranging a layer containing the particles ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/72G11B5/80G06K19/06G11B5/738G11B5/855
CPCG11B5/738G11B5/72G06K19/06196G11B5/855G11B5/73921G11B5/73917G11B5/726G11B5/80G11B5/842B42D25/369Y10S428/90
Inventor 山崎嘉一矢野大辅
Owner DAINIPPON INK & CHEM INC
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