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. 07, 2002
Filed:
Sep. 21, 2000
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
An electrophotographic printing apparatus having a structure so that differences between surface energies of components of the electrophotographic printing apparatus contributing to image transfer are maintained within predetermined ranges, and an image transferring method thereof. The electrophotographic printing apparatus includes a photosensitive medium, developing units, a drying roller and a transfer unit having a transfer roller, whereby the peeling force (PF ) of the drying roller is in a range of 0 gram force per inch (gf/inch)≦PF ≦300 gram force per inch (gf/inch), the peeling force (PF ) of the photosensitive medium is in a range of 0 gram force per inch (gf/inch)≦PF ≦80 gram force per inch (gf/inch), and the peeling force (PF ) of the transfer roller is in a range of 200 gram force per inch (gf/inch)≦PF ≦500 gram force per inch (gf/inch), respectively, when the peeling forces are measured. The image transferring method for an electrophotographic printing apparatus includes the steps of adjusting the peeling force (PF ) of the drying roller, the peeling force (PF ) of the photosensitive medium, and the peeling force (PF ) of the transfer roller to be within the above mentioned respective ranges.