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:
May. 15, 1990
Filed:
Sep. 30, 1988
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus having an image forming case which is removably mounted on a body of the apparatus and loaded with a photoconductive drum, developing unit and a cleaning unit integrally therewith. A transfer charger unit and a register roller unit are each removably mounted on the image forming case by a holder. The holders of the transfer charger unit and register roller unit are individually accurately positioned relative to the case by a positioning mechanism when mounted on the case. The transfer charger unit is surely grounded when mounted on the case. An upper and a lower guide plate are interposed between the register roller unit and the photoconductive element for guiding a paper sheet. Opposite edges of each guide plate are individually disposed at predetermined positions.