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:
Apr. 17, 1990
Filed:
Apr. 14, 1986
Applicant:
Inventors:
Hiroshi Matsuda, Yokohama, JP;
Kenji Saito, Tokyo, JP;
Kunihiro Sakai, Tokyo, JP;
Ken Eguchi, Yokohama, JP;
Yukuo Nishimura, Sagamihara, JP;
Takashi Nakagiri, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G01D / ;
U.S. Cl.
CPC ...
428216 ; 4284111 ; 428913 ; 427164 ; 427402 ; 4274071 ; 3461351 ; 369284 ;
Abstract
A recording method is provided which comprises irradiating a recording medium having a recording layer containing a diacetylene derivative compound with a laser beam having a wavelength of 420 to 800 nm according to an input information to allow irradiated portions of the recording medium to cause a color change and thereby to conduct recording. A recording medium for the recording method is also provided.