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. 05, 1990
Filed:
Dec. 29, 1988
Akihiko Hashimoto, Hachioji, JP;
Olympus Optical Co. Ltd., , JP;
Abstract
The invention relates to a method of recording a data signal on an optical card having a photosensitive layer applied on a metal layer. A number of light beams are emitted from a number of light sources such as semiconductor laser diodes and thin film electroluminescent elements, each light source being selectively driven in accordance with the data signal to be recorded. The light beams are simultaneously made incident upon the photosensitive layer via a projection optical system such as optical fibers and lenses, while the optical card is moved in a longitudinal direction of the optical card. The recording light beams are aligned in a width direction perpendicular to the longitudinal direction.