Optical recording medium and production process for the medium

Details Optical recording medium and production process for the medium Optical recording medium and production process for the medium

1997-08-01

1999-11-09

Angebranndt, Martin

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

4302711, 4302731, 430945, 430 19, 3692752, 3692754, 369286, 428 644, 428 645, 428 646, G03C 100, G11B 724, G11B 1112

Patent

active

RE0363839

ABSTRACT:
An optical information recording medium is provided in which the active layer is a phase change material capable of absorbing energy and being converted between a substantially amorphous state and a substantially crystalline state. The active layer contains nitrogen, which may be in the form of a nitride or nitrides of the constituent elements of the active layer, or may be a nitrided surface thereof. The inclusion of nitrogen inhibits localized shifting of the active material, which leads to degradation of the recording/erase properties of the medium. The optical recording medium includes a substrate, onto which is deposited in sequence a first dielectric layer, a nitrogen-containing active layer, a second dielectric layer, and a metallic reflecting layer. The second dielectric layer is made thin, so that the cooling rate of the active layer is increased to form a more uniform amorphous state.

REFERENCES:
patent: 4499178 (1985-02-01), Wada et al.
patent: 4670345 (1987-06-01), Morimoto et al.
patent: 4984231 (1991-01-01), Yasuaka et al.
patent: 5024910 (1991-06-01), Ohta et al.
patent: 5034255 (1991-07-01), Shigematsu et al.
Ohta et al., "Phase Change Disk having Rapid Cooling Structure", Jap. J.Appl. Phys. 28(3) pp. 123-128, 1989.
Ohta et al., "Million Cycle Overwriteable Phase Change Optical Disk Media", Proc. SPIE 1078 pp. 27-34, 1989.

Affiliated with

Also associated with

Rating

Optical recording medium and production process for the medium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical recording medium and production process for the medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical recording medium and production process for the medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1440562