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:
Feb. 25, 2003
Filed:
Oct. 10, 2000
Toyohiko Mitsuzawa, Nagano-ken, JP;
Shuji Yonekubo, Nagano-ken, JP;
Koichi Otsuki, Nagano-ken, JP;
Kazushige Tayuki, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
During printing, print head characteristics are taken into consideration to alleviate positional deviation of dots in a main scanning direction and improve image quality. The print head unit is provided with readable head identification information that is set in accordance with characteristics relating to positional deviation of dots to be formed by the print head in a main scanning direction. In accordance with this head identification information, adjustment values are determined for reducing printing positional deviation in the main scanning direction, and these adjustment values are used to adjust the position of dots in the main scanning direction.