IP Library Granted Patent US 8,245,940
Granted Patent B2
US 8,245,940 · App. 12/594,122 · Granted Aug 21, 2012

Card-like magnetic recording medium, method for manufacturing the recording medium, laminated body for transfer and method for manufacturing the laminated body

Assignee: DIC Corporation
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Quick Facts
Patent No.
US 8,245,940
App. No.
12/594,122
Granted
Aug 21, 2012
Kind
B2
Abstract

To provide a card-like magnetic recording medium and a transferable laminate which can make a hologram distinctly recognizable and can prevent the occurrence of an ESD fault. In the card-like magnetic recording medium, on the magnetic recording layer 12 formed on the base material for a card 20 , the transparent non-conductive deposited layer 14 and the transparent optical diffraction layer 15 are laminated in this order; between the magnetic recording layer 12 and the transparent non-conductive deposited layer 14 , a reflective ink layer 13 which includes, at least, binder resin and metal flake, is formed; and a mass ratio of this binder resin/metal flake is set from 3 to 10.

Claims (24)

1. A magnetic recording medium, comprising:

a base material;

a magnetic recording layer provided above the base material;

a reflective ink layer provided above the magnetic recording layer, the reflective ink layer comprising a metal flake and a binder resin, wherein a mass ratio of the binder resin to the metal flake in the reflective ink layer is 3.0:1-10.0:1; and

a transparent non-conductive deposited layer provided above the reflective ink layer.

2. The magnetic recording medium according to claim 1 ,

wherein the magnetic recording layer is formed in a longitudinal direction of the base material having a stripe shape, and

wherein the reflective ink layer is formed on all area adjoining to the magnetic recording layer.

3. The magnetic recording medium according to claim 1 or 2 , wherein the reflective ink layer is formed by applying reflective ink containing the metal flake and the binder resin by micro-gravure coating.

4. A method for manufacturing of a transferable laminate, comprising:

providing a temporary support, and

laminating a transparent optical diffraction layer, a transparent non-conductive deposited layer, a reflective ink layer, a magnetic recording layer, an adhesive layer as required, in this order on the temporary support;

wherein the reflective ink layer is formed by coating the transparent non-conductive deposited layer with a reflective ink containing a metal flake and a binder resin,

wherein a mass ratio of the binder resin to the metal flake in the reflective ink is 3.0:1-10.0:1.

5. The method for manufacturing of a transferable laminate according to claim 4 comprising:

having a transfer process which laminates, from a side close to a base material, the magnetic recording layer, the reflective ink layer, the transparent non-conductive deposited layer, and the transparent optical diffraction layer, in this order on a base material via the adhesive layer.

6. A transferable laminate, comprising:

a temporary support;

a transparent optical diffraction layer provided above the temporary support;

a transparent non-conductive deposited layer provided above the transparent optical diffraction layer;

a reflective ink layer provided above the transparent non-conductive deposited layer; and

a magnetic recording layer provided above the reflective ink layer,

wherein the reflective ink layer comprises a metal flake and a binder resin,

wherein a mass ratio of the binder resin to the metal flake in the reflective ink layer is 3.0:1-10.0:1.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 1, 2009
From: YANO, DAISUKE; YAMAZAKI, YOSHIKAZU
To: DIC CORPORATION
Reel/Frame 023311/0962 →
Priority Claims (1)
JP 2007-092957 · Mar 30, 2007 · national
Continuity (1)
Related Publication 20100116891A1 · May 13, 2010