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:
Apr. 11, 2006
Filed:
Jul. 20, 2004
Moriyoshi Inaba, Tokyo, JP;
Moriyoshi Inaba, Tokyo, JP;
Canon Finetech Inc., Mitsukaido, JP;
Abstract
There is provided a printer capable of accurately detecting the print positions of a printing medium and keeping print positions where data are printed constant. A printer according to this invention can accurately detect the print positions of a printing medium and keep positions where data are printed constant by the following operation. More specifically, the printer sets a gap width (PG) for the printing medium and detects the position information of the conveyed printing medium by an optical sensor arranged on a convey path. The printer compares output values (Va, Vb) from the optical sensor with a threshold value (Vth) and obtains a detected gap width (AG) corresponding to the set gap width (PG). The printer changes the threshold value (Vth) such that the detected gap width (AG) coincides with the set gap width (PG).