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:
May. 06, 2008
Filed:
Jul. 10, 2006
Tsuyoshi Nagasu, Ibaraki, JP;
Sadanori Kobashi, Ibaraki, JP;
Shinji Nagayama, Ibaraki, JP;
Ricoh Printing Systems, Ltd., Tokyo, JP;
Abstract
A sheet transporting apparatus includes: a heating roller and a pressure roller that heats and presses a toner image to fix the toner image onto the sheet; a pressure roller detection unit that detects a contact posture of the rollers; a sheet meander correction mechanism that corrects a meander of the sheet by varying a difference in pressures between the rollers at both ends of the rollers; and a microprocessor that computes and stores the amount of the meander and the amount of correction, wherein the toner is fixed on the sheet when the contact posture is within a fixable range, and wherein when the pressure roller detection unit detects that the contact posture is out of the fixable range during transport of the sheet, the contact posture is controlled to return to a predetermined fixable posture, and the microprocessor corrects an error in the amount of correction.