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. 02, 2007
Filed:
Mar. 30, 2005
Tetsuya Kobayashi, Numazu, JP;
Kohei Matsuda, Shizuoka-ken, JP;
Shinya Yamamoto, Numazu, JP;
Masato Koyanagi, Mishima, JP;
Shinichi Agata, Shizuoka-ken, JP;
Kentaro Kawata, Numazu, JP;
Tetsuya Kobayashi, Numazu, JP;
Kohei Matsuda, Shizuoka-ken, JP;
Shinya Yamamoto, Numazu, JP;
Masato Koyanagi, Mishima, JP;
Shinichi Agata, Shizuoka-ken, JP;
Kentaro Kawata, Numazu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic image forming apparatus for forming an image on a recording material, to which a cartridge is detachably mountable. The cartridge includes portion for accommodating a developer for developing an electrostatic latent image formed on an electrophotographic photosensitive member, a roller for developing the electrostatic latent image with the developer, an opening for supplying the developer to the developing roller from the developer accommodating portion, and a sealing member for unsealably sealing the developer supply opening. The apparatus includes a detector for detecting that amount of the developer deposited on a member to be detected is less than a predetermined level, a retractor for producing an electric signal for retracting the sealing member from a sealing position where the sealing member seals the developer supply opening, when the detector detects that amount of the developer deposited on the member to be detected is less than the predetermined level.