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:
Nov. 03, 2009
Filed:
Apr. 26, 2007
Yasumasa Tomita, Tokyo, JP;
Yasumasa Tomita, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical scanning apparatus includes a plurality of light sources for emitting light beams and a rotary deflector for deflecting the light beams. A revolution number (Rm) of the rotary deflector is reduced to Rdef×(V/Vmax) if V/Vmax is greater than a value; and the revolution number (Rm) thereof is reduced to Rdef×(V/Vmax)×m and the number of the light beams is reduced to Ndef/m if V/Vmax is not greater than the value. V is a process linear velocity of the image forming apparatus; Vmax is a maximum process linear velocity thereof; Ndef is the number of the light beams at the maximum process linear velocity Vmax; and Rdef is the revolution number of the rotary deflector thereat; and m is a positive integer, and Vmax is greater than V (Vmax>V).