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:
Dec. 30, 2003
Filed:
Dec. 23, 1998
Hajime Yoshida, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A correction method for determining a correction amount for correcting a printing position shift based on ink discharge velocity in a printer. The printer prints a plurality of identical adjustment patterns while changing the printhead scanning speed by a predetermined amount. The plurality of printed patterns are visually compared, a pattern with the highest quality is selected, and the selection result is designated to the printer through a host. In accordance with the designation, the printer stores a velocity of discharging an ink from the printhead, which is necessary for printing the selected pattern, in a non-volatile memory (NVRAM). After this, the correction amount for correcting the printing position shift is calculated on the basis of the stored ink discharge velocity, and printing is performed while correcting the printing potion shift using the correction amount.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile