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:
Mar. 16, 1999
Filed:
Oct. 11, 1996
Koichi Sato, Tokyo, JP;
Masato Okabe, Tokyo, JP;
Hironori Kamiyama, Tokyo, JP;
Osamu Shimizu, Tokyo, JP;
Yuudai Yamashita, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
An electro-developing type camera uses an electro-developing recording medium including an electrostatic information recording medium and an electric charge keeping medium. The camera has a transparency sensor for detecting dark-zone-transparency data at a portion of the electric charge keeping medium corresponding to a dark zone defined on a light receiving surface of the electrostatic information recording medium. It is determined whether or not the dark-zone-transparency data is substantially equal to reference-transparency data. If the dark-zone-transparency data is not substantially equal to the reference-transparency data, it is warned that the electro-developing recording medium has been recorded on.