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:
Jul. 04, 2017
Filed:
Dec. 01, 2015
Samsung Electronics Co., Ltd., Suwon-si, KR;
Tae-hyun Kim, Hwaseong-si, KR;
S-PRINTING SOLUTION CO., LTD., Suwon-si, KR;
Abstract
An electrophotographic image forming apparatus has a developing roller, wherein a glossiness of a surface of the developing roller is in a range of about 4 to about 15, the developing roller includes a plurality of protruding beads, a number average distance (Rsm) between the protruding beads is in a range of about 200 μm to about 400 μm, a supplying roller includes a plurality of foam cells, a number average size of the foam cells is in a range of about 300 μm to about 500 μm, and the developing roller is arranged to rotate at a rotation linear velocity that is about 120% to about 150% of a rotation linear velocity of a photoreceptor.