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. 07, 2007
Filed:
Feb. 25, 2004
Toshiyuki Chikuma, Kanagawa, JP;
Hisatsugu Naito, Kanagawa, JP;
Hidehiko Kanda, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An inkjet printing apparatus prints by scanning an inkjet printhead for discharging ink and a printing medium relative to each other. The printhead includes a first nozzle group used to print a dot having a first density, and a second nozzle group used to print a dot having a second density. The inkjet printing apparatus has a first printing mode in which only one of the first and second nozzle groups is used during one printing scan, and a second printing mode in which the first and second nozzle groups are driven at different timings during one printing scan. In this inkjet printing apparatus, a pattern for adjusting the relative printing positions of the nozzle rows in the first printing mode is printed. From this pattern, set values of relative printing positions in the first printing mode are specified. On the basis of the specified set values, set values of the relative printing positions of the nozzle rows in the second printing mode are determined.