Optical card with printing visible below the optical recording

Details Optical card with printing visible below the optical recording Optical card with printing visible below the optical recording

1993-03-10

1995-04-25

Shepperd, John

Registers

Records

Laminated

283 88, 283109, 235487, 3692751, G06K 1916, G11B 724

Patent

active

054101425

ABSTRACT:
An optical card having visible data marked on a base layer and a substantially transparent optical data recording layer formed over the base layer. A protective layer is laminated over the optical data recording layer. The visible data marked on the base may be marked in an ink visible only at a nonvisual wavelength, such as infrared. A reader scans the visible data marked on the base layer, since the optical recording layer covering the base layer is substantially transparent.

REFERENCES:
patent: 3477156 (1967-04-01), Naito
patent: 3640009 (1972-02-01), Komiyama
patent: 4222662 (1980-09-01), Kruegle
patent: 4504084 (1985-03-01), Jauch
patent: 5010243 (1991-04-01), Fukushima et al.
patent: 5151582 (1992-09-01), Fujioka
patent: 5206490 (1993-04-01), Petigrew et al.
patent: 5259907 (1993-11-01), Soules et al.
Patent Abstracts of Japan vol. 13, No. 526 (M-897) 22 Nov. 1989 & JP-A-01 214 487 (Sony Corporation) 28 Aug. 1989 *abstract*.

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