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:
Sep. 22, 1998
Filed:
Sep. 16, 1996
Chang-Soo Rhee, Suwon, KR;
Yong-Baek Yoo, Suwon, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
A system for controlling a potential of a photosensitive drum for a laser beam printer having a photosensitive drum on which an electrostatic image is formed, a charger for applying voltages differentially to an image forming area where the photosensitive drum contacts a recording medium and to a non-image forming area where the photosensitive drum does not contact the recording medium to charge the outer surface of the photosensitive drum to a given polarity, a light scanner unit for forming an electrostatic latent image on the drum corresponding to image data, a developing unit for applying toner onto the photosensitive drum during the image forming area and a transfer charger for transferring a toner image formed on the drum to the recording medium. The system includes a potential controlling unit for applying a first charging potential to the photosensitive drum during the image forming area to charge the photosensitive drum to a given voltage for development, and for applying a second charging potential to the photosensitive drum during the non-image forming area.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile