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:
Mar. 23, 1999
Filed:
May. 15, 1997
Tachio Kawai, Odawara, JP;
Jun Miyamoto, Susono, JP;
Kanji Yokomori, Odawara, JP;
Koji Miura, Mishima, JP;
Kazuhiko Kanno, Numazu, JP;
Takeshi Arimitsu, Numazu, JP;
Hideki Sato, Hirosaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developing device which is capable of being detachably mounted to a rotary unit of an image forming apparatus and which includes a developer carrying member for forming a development region together with an image carrying member and rotating as carrying a developer, a developer containing section for containing the developer to be supplied to the developer carrying member, and a pressure relief portion provided in a surface substantially perpendicular to the rotational axis of the rotary unit, of the developer containing section.