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. 11, 2003
Filed:
Jul. 18, 2000
Yuji Tsuruoka, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A printing apparatus and printing method for improving printing speed in multi-pass printing without increasing the capacity of a printer power source while utilizing a conventional printhead. A plurality of printing elements of the printhead is divided into a plurality of blocks; different blocks are selected from the plurality of blocks for each scan of the multi-pass printing; printing elements included in the selected block are time-divisionally driven; and moving speed of the carriage is increased in accordance with the number of times of scans in multi-pass printing. In multi-pass printing, for instance, in a case where the number of blocks selected for each scan of multi-pass printing is one half of the total number of blocks, the moving speed of the carriage is doubled, thereby achieving high-quality image printing while maintaining high speed of the printing.