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. 23, 1992
Filed:
Dec. 03, 1990
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359219 ; 359212 ;
Abstract
An optical deflector is employed in an optical unit incorporated in a laser beam printer. The optical deflector reflects a laser beam, which is emitted by a laser diode and is made to have a cross section of desirable size by a group of conversion lenses, toward a photosensitive body. The optical deflector contains a polygonal mirror having four or eight reflecting surfaces. Each of these reflecting surfaces has a cross section which is convex in a main scanning direction. The polygonal mirror is adhered to the shaft of a motor used for rotating the polygonal mirror. Alternatively, it is adhered to the base member fixed to the shaft.