High contrast optical memory disk

Details High contrast optical memory disk High contrast optical memory disk

1987-04-16

1988-08-09

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430275, 430277, 430278, 430290, 430346, 430495, 430525, 430616, 430945, 430964, 3461351, G03C 172, G03C 178, G03C 194

Patent

active

047627700

ABSTRACT:
An optical memory disk for laser recorded optical information featuring a gelatin layer having a thin black crust at the top of the layer. The crust is formed by developed black irregular oblong silver particles within the top 0.5 micron of a gelatin colloid matrix. The remainder of the colloid matrix is substantially clear gelatin and a reflective metallic layer is disposed below the gelatin. The disk may be pre-patterned during formation of the crust with control indicia, such as servo track guides or timing marks. User data may be recorded by modification of the black silver particles in the crust with a laser to expose the reflective underlayer. A laser or other light source is used to read data on the medium with optical contrast between the black surface and the reflective metallic layer underlying the gelatin layer which can be observed in the recorded spots.

REFERENCES:
patent: 4239338 (1980-12-01), Borrelli et al.
patent: 4269917 (1981-05-01), Drexler et al.
patent: 4278756 (1981-07-01), Bouldin et al.
patent: 4278758 (1987-07-01), Drexler et al.
patent: 4343879 (1982-08-01), Drexler et al.
patent: 4588665 (1986-05-01), Drexler
patent: 4635076 (1987-01-01), Willson et al.
patent: 4636804 (1987-01-01), Kuder
patent: 4673626 (1987-06-01), Takeda et al.
patent: 4692394 (1987-09-01), Drexler

Affiliated with

Also associated with

Rating

High contrast optical memory disk does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High contrast optical memory disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High contrast optical memory disk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-918354