Method for recording information via photo-recording medium

Details Method for recording information via photo-recording medium Method for recording information via photo-recording medium

1990-12-21

1993-06-01

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

430 19, 430495, 430945, 430962, G11B 724

Patent

active

052158683

ABSTRACT:
When information recording is conducted by converting a non-colored state of a recording film into a colored state, use is made of a recording light having a wavelength in such a range that an absorbance of the non-colored state is higher than an absorbance of the colored state. When information erasing is conducted by converting a non-colored state of a recording film into a colored state, use is made of an erasing light having a wavelength in such a range that an absorbance of the non-colored state of the recording film is higher than an absorbance of the colored state. Accordingly, the present invention has the advantage of a great change of color being exhibited in the recording film, thus enabling optimal recording and erasing of information.

REFERENCES:
patent: 4794068 (1988-12-01), Miyazaki et al.
patent: 4837063 (1989-06-01), Irie
patent: 4845240 (1989-07-01), Hibino et al.

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