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:
Nov. 17, 2009
Filed:
Jul. 24, 2006
Jin-geun Kwak, Suwon-si, KR;
Jin-geun Kwak, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An image forming apparatus and control method, the image forming apparatus including: a first image bearing body and a second image bearing body aligned to form predetermined color images; a transfer belt supported by a driving roller and a driven roller, to transfer images onto a printing medium; a first primary transfer roller installed on the opposite side of the first image bearing body, having the transfer belt in-between; a second primary transfer roller movably installed on the opposite side of the second image bearing body, having the transfer belt in-between, to engage/disengage the transfer belt with/from the second image bearing body by selectively changing the traveling track of the transfer belt; a driving unit to drive the second primary transfer roller to engage/disengage with/from the transfer belt; and a belt length adjusting unit to control the traveling distance of the transfer belt to be constant.