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:
Sep. 23, 2008
Filed:
Dec. 23, 2004
Hiroshi Hosokawa, Kanagawa, JP;
Atsushi Sampe, Kanagawa, JP;
Yoshiyuki Kimura, Tokyo, JP;
Hiroyuki Nagashima, Kanagawa, JP;
Hiroshi Hosokawa, Kanagawa, JP;
Atsushi Sampe, Kanagawa, JP;
Yoshiyuki Kimura, Tokyo, JP;
Hiroyuki Nagashima, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A highly reliable developing device, process cartridge, device unit, and image forming apparatus in which a developer is not spattered to the outside of the developing device even when the developing device where a developer is preset is included with shipment in an image forming apparatus main body. This developing device comprises a developer container for containing a developer, and a toner replenishing portion which is connected with a toner conveyance portion installed in the image forming apparatus main body and which is communicated with the developer container via an opening portion. Such a developing device is provided with a sealing member for sealing the opening portion until use of the developing device on the image forming apparatus main body is started.