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:
Mar. 27, 2007
Filed:
Jun. 09, 1999
Yoichi Yamagishi, Tokyo, JP;
Yoichi Yamagishi, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To correct the distance between respective drums and supply image data, an image processing system using a 4-drum type color image forming apparatus requires a large-capacity image memory for temporarily storing transferred image data, and is inevitably expensive. In this invention, image data of four colors isochronously transferred via a high-speed serial interface such as an IEEE 1394 interface are respectively supplied to image processing units and image forming units via delay memories. Therefore, the time difference required for the print sheet to reach each drum can be corrected in each image forming unit to appropriately form an image at a high speed and low cost.