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. 05, 2009
Filed:
Jul. 18, 2005
Satoshi Ohmiya, Kanagawa, JP;
Satoshi Ohmiya, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A color image forming apparatus in which an engine controller outputs an operation start signal to write controllers at a timing at which a registration sensor detects a position of a sheet of transfer paper. Synchronization detection signals for colors are used to set reference positions for front edges of the colors in a main scanning direction. A write controller for a reference color outputs a write-operation start signal so as not to cut the synchronization detection signals each indicating one line for one color in the main scanning direction and line synchronization signals, into two parts in their longitudinal direction. The write-operation start signal is used to set a reference time point when the write controllers make transfer requests for image signals for the colors to an image processor.