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. 24, 2009
Filed:
Aug. 16, 2005
Applicants:
Hideo Kikuchi, Kanagawa-ken, JP;
Takundo Isobe, Chiba-ken, JP;
Inventors:
Hideo Kikuchi, Kanagawa-ken, JP;
Takundo Isobe, Chiba-ken, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image forming apparatus which allows an independent and easy replacement of replaceable image forming devices including an image forming unit detachably provided in the image forming apparatus. The image forming unit includes a housing, a plurality of replaceable devices, and a nonvolatile memory. The plurality of replaceable devices are replaceably mounted inside the housing. The nonvolatile memory is mounted on the housing and stores lifetime information of the image forming unit and each one of the plurality of replaceable devices.