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:
Nov. 28, 1995
Filed:
May. 16, 1994
Haruo Fujii, Yokohama, JP;
Tatsuya Kobayashi, Tokyo, JP;
Nobuhiro Imai, Kawasaki, JP;
Hisayoshi Kojima, Yokohama, JP;
Masao Umezawa, Yokohama, JP;
Hideki Tada, Yokohama, JP;
Akira Ito, Tokyo, JP;
Kaoru Seto, Chigasaki, JP;
Motoi Katoh, Yokohama, JP;
Daisuke Murata, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus usable with a process cartridge for forming an image on a recording material. The process cartridge includes an image bearing member, and at least one developing device for developing a latent image formed on the image bearing member with a developer. Each of said at least one developing devices includes a developer accommodating device for accommodating a respective developer to be used in said at least one developing device. The image forming apparatus includes a mounting device for mounting the process cartridge, an auxiliary developing device exterior to the process cartridge for developing a latent image formed on the image bearing member with a developer, the auxiliary developing device including an auxiliary developer accommodating device for accommodating the developer to be used in the auxiliary developing device, and a detecting device for detecting a respective predetermined level of developer in the auxiliary developer accommodating device and in each of the respective developer accommodating devices of said at least one developing device.