The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 1990
Filed:
Aug. 17, 1988
Applicant:
Inventors:
Yukuo Nishimura, Sagamihara, JP;
Haruki Kawada, Kawasaki, JP;
Masahiro Haruta, Funabashi, JP;
Yutaka Hirai, Tokyo, JP;
Noritaka Mochizuki, Yokohama, JP;
Takashi Nakagiri, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428913 ; 428216 ; 4284111 ; 430945 ; 346 / ; 3461351 ; 369288 ; 4274343 ;
Abstract
An optical recording device and an information memorizing device utilizing the same are provided. The optical recording device comprises an A-layer comprising a chromogenic compound which is usually colorless or pale colored, a B-layer comprising an auxochromic compound capable of making said chromogenic compound form color through contact with said chromogenic compound, and a light-absorbing layer, at least one of the three layers being constituted of a monomolecular film or a built-up film thereof.