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. 12, 1992
Filed:
Mar. 19, 1991
Hiroyuki Hanamoto, Aichi, JP;
Masaaki Oyabu, Aichi, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A laser beam scanning apparatus for laser printers, digital copying machines and the like in which a plurality of laser beams are combined, the composite laser beam is deflected in the main scan direction and a part of the deflected composite laser beam enters an optical path at an SOS signal sensor, then the composite laser beam is split and directed to different parts of an exposure member. Although there is some mixing of one beam split from the composite beam with unsatisfactorily separated beam, the unsatisfactorily separated beam is further separated in the optical path to the exposure member, thus effectively preventing the occurrence of image ghosts on the exposure member.