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:
Jan. 09, 2001
Filed:
Mar. 31, 1997
Dong-Joon Kim, Suwon, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
There is disclosed, in an image forming apparatus using electrophotography having a photoconductive drum rotating in a clockwise direction and at a predetermined velocity, a charging roller for uniformly charging the photoconductive drum's outer surface, and a scanner unit for scanning the photoconductive drum's charged area to form a latent image thereon, a transfer roller for preventing the photoconductive drum from being stained with toner that is manufactured to have different properties at its center than at its edges so as to prevent a large quantity of positive charges from being applied to the edges of the photoconductive drum and the edges of the charging roller which are not in contact with the paper.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile