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. 22, 2001
Filed:
Aug. 01, 1997
Kouichi Takemura, Kawasaki, JP;
Yoshitaka Murakawa, Kawasaki, JP;
Hiroyuki Matsuo, Kawasaki, JP;
Takao Sugano, Kawasaki, JP;
Kazuki Ogawa, Kawasaki, JP;
Fumio Kaneko, Kawasaki, JP;
Yukihiro Matsushita, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An image forming apparatus includes a plurality of light sources emitting beams of light, a photoconductor, a scanner for reflecting the beams of light emitted by the light sources to scan the photoconductor periodically, a light detector for receiving the beams of light from the scanner to determine a beam pitch between the beams of light, the light detector being provided in a part of an optical path between the scanner and the photoconductor, a beam shifter for shifting the beams of light incident on the scanner from the light sources, and a controller for operating the beam shifter so that the beam pitch determined by the light detector becomes a predetermined value.