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:
Oct. 12, 2004
Filed:
Jul. 22, 2002
Tetsuya Morita, Kanagawa, JP;
Kunio Tsuruno, Tokyo, JP;
Keizo Isemura, Tokyo, JP;
Ikuo Takeuchi, Ibaraki, JP;
Ichiro Sasaki, Ibaraki, JP;
Masahiro Kurahashi, Tokyo, JP;
Atsushi Nakagawa, Ibaraki, JP;
Kenji Fukushi, Ibaraki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus is provided which includes a sheet containing section for containing sheets, a conveying member and a conveying path for conveying the sheets, at least one optical sensor that is arranged in the conveying path and has a light emitting element and a light receiving element for detecting presence or absence of a sheet on the conveying path, a driver for changing an amount of emitted light of the optical sensor, a sheet supply operation detecting section for detecting a supply operation of the sheets contained in the sheet containing section, and a control section for adjusting an amount of emitted light of the optical sensor according to an output of the sheet supply operation detecting section.