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:
Jun. 03, 2003
Filed:
Oct. 10, 2001
Kazuyoshi Matsuo, Hitachi, JP;
Makoto Otaka, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an electrophotographic device, a method is provided in which laser power is regulated at two predetermined points of gradation. More specifically, a first laser power regulating means which regulates the magnitude of a laser power output and a second laser power regulating means which regulates the slope of laser power gradation characteristic are provided. Thereby, stabilization of the laser power output value is realized at any stage of the gradation, and an electrophotographic device can be provided which reduces variability in image quality between electrophotographic devices.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile