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. 14, 1997
Filed:
Apr. 05, 1994
Hidetoshi Suzuki, Fujisawa, JP;
Yoshiyuki Osada, Atsugi, JP;
Ichiro Nomura, Atsugi, JP;
Takeo Ono, Machida, JP;
Hisaaki Kawade, Yokohama, JP;
Eiji Yamaguchi, Zama, JP;
Toshihiko Takeda, Atsugi, JP;
Hiroaki Toshima, Tokyo, JP;
Yasuhiro Hamamoto, Atsugi, JP;
Tatsuya Iwasaki, Atsugi, JP;
Aoji Isono, Atsugi, JP;
Noritake Suzuki, Atsugi, JP;
Yasuyuki Todokoro, Yokohama, JP;
Masahiro Okuda, Zama, JP;
Katsuhiko Shinjo, Isehara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing an electron source having a plurality of surface-conduction electron-emitting devices arranged on a substrate in row and column directions includes the forming of electron emission portions of the plurality of surface-conduction electron-emitting devices. The forming is carried out by supplying current through the plurality of surface-conduction electron-emitting devices upon dividing them into a plurality of groups. An image forming apparatus passes a current through a plurality of electron sources, which are formed on a substrate and arrayed in the form of a matrix, in dependence upon an image signal, and an image is formed by a light emission in response to electrons emitted from the plurality of electron sources.