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:
Dec. 08, 2009
Filed:
May. 25, 2006
Tadayoshi Nishihama, Abiko, JP;
Fumitake Hirobe, Ushiku, JP;
Akihiro Noguchi, Toride, JP;
Akinori Tanaka, Kashiwa, JP;
Tadayoshi Nishihama, Abiko, JP;
Fumitake Hirobe, Ushiku, JP;
Akihiro Noguchi, Toride, JP;
Akinori Tanaka, Kashiwa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a developing apparatus provided with a developer container containing a developer, a rotary member holding the developer container and rotatively moving it relative to a developing position, an opening portion provided in the developer container and through which the developer is supplied or discharged, a valve swingable to open and close the opening portion, and a restricting wall restricting the movement of the valve in an opening direction by contacting with the valve when the valve is in an opened position, an irregularity portion is provided on at least one of the contact surface of the valve with the restricting wall and the contact surface of the restricting wall with the valve.