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. 26, 2001
Filed:
Jun. 24, 1998
Applicant:
Inventors:
Takashi Kawana, Yokohama, JP;
Hiroshi Sasame, Numazu, JP;
Yoshimi Ogasawara, Shizuoka-ken, JP;
Fumihiro Ueno, Mishima, JP;
Eiichiro Teshima, Odawara, JP;
Tomoyuki Okada, Shizuoka-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/500 ; G03G 2/100 ;
U.S. Cl.
CPC ...
G03G 1/500 ; G03G 2/100 ;
Abstract
An image forming apparatus includes an image bearing member, a container for containing a developer removed from the image bearing member, a detector for detecting an amount of developer removed from the image bearing member and contained in the container, and a failure detector for detecting a failure of the developer amount detector on the basis of the degree of use of the image bearing member and a detection result of the developer amount detector.