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:
Aug. 23, 2011
Filed:
Feb. 23, 2005
Atsufumi Omori, Kanagawa, JP;
Masaaki Ishida, Kanagawa, JP;
Yasuhiro Nihei, Kanagawa, JP;
Dan Ozasa, Kanagawa, JP;
Atsufumi Omori, Kanagawa, JP;
Masaaki Ishida, Kanagawa, JP;
Yasuhiro Nihei, Kanagawa, JP;
Dan Ozasa, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A pixel clock generator that generates a pixel clock to regulate a drive timing of a scanning light source includes a data generating circuit that generates phase data based on a phase data pattern to correct an uneven scanning speed and fluctuation of scanning widths, and a pixel clock generating circuit generates a pixel clock having a long cycle based on a high-frequency clock and that performs a phase shift for the pixel clock based on the high-frequency clock. The phase pattern is set-such that difference in an amount of the phase shift between the pixel clocks adjacent to each other does not exceed a basic amount of the phase shift of the pixel clock generating circuit.