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:
Aug. 31, 1993
Filed:
Mar. 09, 1990
Ken Eguchi, Yokohama, JP;
Kiyoshi Takimoto, Kanagawa, JP;
Haruki Kawada, Yokohama, JP;
Junji Ohyama, Yamato, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A recording-reproducing apparatus comprises a recording medium provided with a recording layer containing at least two kinds of compounds, which compounds respectively form phases, and having regular periodic structure comprising said phases as constituent units; a probe electrode disposed opposingly to said recording medium; a circuit for applying a voltage between said recording medium and probe electrode; and a circuit for detecting an electric current flowing between said recording medium and probe electrode. A recording-reproducing method comprises detecting by the use of a probe electrode, at least one phase on a recording medium of the apparatus and recording information or reproducing the recorded information at the position where said phase has been detected.