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:
Nov. 30, 1993
Filed:
Apr. 04, 1991
Applicant:
Inventors:
Masataka Yashima, Yokohama, JP;
Osamu Kanome, Kawasaki, JP;
Hirofumi Kamitakahara, Yokohama, JP;
Tsuyoshi Santoh, Yokohama, JP;
Hiroyuki Sugata, Yamato, JP;
Tetsuya Sato, Chichibu, JP;
Hitoshi Yoshino, Kawasaki, JP;
Hisanori Hayashi, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
369100 ; 3692751 ; 264-13 ; 264106 ;
Abstract
A substrate for an optical card having tracking grooves in a stripe form formed on the surface of an extrusion-molded thermoplastic resin sheet is characterized in that the direction of the tracking grooves is in parallel to the extrusion direction of the thermoplastic resin sheet, and the recording or reproduction using the optical card is characterized by that the optical card is bent and reciprocally moved along the direction of tracking grooves.