Title:
RECORDING PAPER
Document Type and Number:
Japanese Patent JPH0561133
Kind Code:
A
Abstract:
PURPOSE: To obtain a recording paper on which images of characters or the like can be directly drawn by scanning light.
CONSTITUTION: The paper has a color-changing layer which shows color in a normal state and changes into colorless and transparent with irradiation of light of specified wavelength, and a base layer 11 having different color from the color-changing layer 12. The color-changing layer 12 consists of a mixture of at least cyanine dye IR820B particles 12a and org. baron ammonium salt 12b. The specified wavelength is 820nm near infrared ray.
Inventors:
NISHIYAMA MASATAKA
Application Number:
JP24689791A
Publication Date:
March 12, 1993
Filing Date:
August 30, 1991
Export Citation:
Assignee:
ASAHI OPTICAL CO LTD
International Classes:
B41M5/00; B41M5/26; B41M5/28; B41M5/36; G03C1/00; G03C1/72; (IPC1-7): B41M5/00; B41M5/26; B41M5/36; G03C1/00; G03C1/72
Attorney, Agent or Firm:
Kunio Miura
Next Patent: JPH0561134