Title:
【発明の名称】可逆的な赤外線記録媒体
Document Type and Number:
Japanese Patent JPH02500967
Kind Code:
A
Abstract:
PCT No. PCT/GB88/00587 Sec. 371 Date Mar. 24, 1989 Sec. 102(e) Date Mar. 24, 1989 PCT Filed Jul. 20, 1988 PCT Pub. No. WO89/01220 PCT Pub. Date Feb. 9, 1989.The invention relates to an optical data recording method which comprises addressing a recording device using an infra-red laser modulated with a waveform of the information to be recorded, wherein said recording device comprises an infra-red absorbing material and a photochromic fulgide which is converted into its colored form under the influence of the heat absorbed from the laser, and updating the recording by erasing undesired previously recorded data using a laser operation in the visible region of the spectrum.
Inventors:
Trundle Clive
Application Number:
JP50607988A
Publication Date:
April 05, 1990
Filing Date:
July 20, 1988
Export Citation:
Assignee:
Pressy Overseas Limited
International Classes:
G11B7/30; G03C5/08; G11B7/00; G11B7/0055; G11B7/24; G11B7/244; (IPC1-7): B41M5/26; G11B7/00; G11B7/24
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)