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:
Jan. 11, 1994
Filed:
Sep. 05, 1991
Hiroshi Matsuda, Kanagawa, JP;
Hisaaki Kawade, Kanagawa, JP;
Ken Eguchi, Kanagawa, JP;
Etsuro Kishi, Kanagawa, JP;
Hideyuki Kawagishi, Kanagawa, JP;
Kiyoshi Takimoto, Kanagawa, JP;
Yuji Kasanuki, Tokyo, JP;
Yoshihiro Yanagisawa, Kanagawa, JP;
Toshihiko Takeda, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An information processing apparatus including a recording medium, a magnetic material having a predetermined magnetization pattern with respect to the recording medium, a first device for detecting the magnetization pattern of the magnetic material, a second device for detecting a change of the recording medium and a third device for driving the recording medium and the second device relative to each other, based on a signal from the first device.