Title:
INFORMATION RECORDING MEDIUM
Document Type and Number:
Japanese Patent JPH04305647
Kind Code:
A
Abstract:
PURPOSE: To offer an information recording medium which enables high-density and large-capacity recording.
CONSTITUTION: The medium has a recording layer 7 containing photochromic compd. which does not change by electric stimulation and an electrochromic compd. which dose not change by optical stimulation. Thereby, recording/ reproducing of 22 using four different states can be performed, which enables high-density large-capacity recording.
Inventors:
MIYADERA TOSHIYUKI
OKANO MAKOTO
MATSUI FUMIO
OKANO MAKOTO
MATSUI FUMIO
Application Number:
JP461091A
Publication Date:
October 28, 1992
Filing Date:
January 18, 1991
Export Citation:
Assignee:
PIONEER ELECTRONIC CORP
International Classes:
G11B13/00; B41M5/26; C09B1/00; C09B27/00; G03C1/73; G11B7/24033; G11B7/244; G11B9/00; (IPC1-7): B41M5/26; C09B1/00; C09B27/00; G03C1/73; G11B7/24
Attorney, Agent or Firm:
Yasuo Ishikawa (1 outside)