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:
Sep. 06, 2005
Filed:
May. 24, 2004
Masataka Muratani, Tokyo, JP;
Masataka Muratani, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
The image forming apparatus having an image deviation correction function of the present invention measures passing waveforms of correction patterns on a transfer belt printed in the main scanning direction in a relationship of a reflected image and correction patterns thermally fixed on a sheet of paper by detection sensors and from measured results, obtains main scanning magnification Spand center position deviation amount Zfor double-side horizontal deviation correction with high accuracy. During double-side image forming, a toner image on the first side is printed at a main scanning magnification of 100%, while a toner image on the second side is printed using a correction signal to which main scanning magnification Spand center position deviation amount Zare applied, thus horizontal deviation of double-side image forming is corrected.