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:
Oct. 16, 2012
Filed:
Feb. 18, 2010
Hiroko Tsujiguchi, Kawasaki, JP;
Hideki Nakanishi, Kawasaki, JP;
Hiroshi Uemura, Zushi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A printing apparatus which prints by scanning a printhead in two directions based on raster data containing multi-valued data, sequentially stores multi-valued data contained in each raster data in a print buffer in correspondence with a predetermined direction of the two directions, acquires for each raster data, identification information corresponding to the multi-valued data stored in the print buffer first and identification information corresponding to the multi-valued data stored in the print buffer lastly for each tone value based on initial values of identification information and the number of multi-valued data contained in each raster data, generates bitmap data from the multi-valued data using pattern data read out based on identification information selected based on a scanning direction of the printhead, and controls printing of the printhead based on the generated bitmap data.