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:
Jan. 05, 1988
Filed:
Apr. 07, 1986
Applicant:
Inventors:
Isamu Shibata, Tokyo, JP;
Kazuyuki Shimada, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; G01D / ; H04H / ;
U.S. Cl.
CPC ...
346108 ; 346160 ; 358296 ;
Abstract
An optical scanner for use with a laser printer, a laser display or the like includes an optical deflector for directly scanning a photoconductive drum with a beam which is emitted from a semiconductor laser and to be focused as a minute spot on the drum. The frequency of an image scanning clock is continuously varied as an approximation to scanning speeds of a spot which is produced by the deflector. The intensity of the beam is controlled by an intensity control circuit.