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:
Jan. 16, 2001
Filed:
May. 17, 1999
Printer sheet deskewing system with automatic variable nip lateral spacing for different sheet sizes
Paul N. Richards, Fairport, NY (US);
Lawrence R. Benedict, Fairport, NY (US);
Brian R. Ford, Walworth, NY (US);
David A. D'Angelantonio, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A sheet handling system for correcting the skew and/or transverse position of sequential sheets, especially those moving in a process direction in a sheet transport path of a reproduction apparatus to be registered for image printing, of the type in which the deskewing and/or side registration is accomplished by partially rotating the sheet with a transversely spaced pair of differentially driven sheet steering nips. The effective range of sheet size capabilities of such systems may be increased without steering nip slippage or other problems by applying a control signal proportional to the width of the sheet to a system for automatically increasing or decreasing the transverse spacing between the pair of sheet steering nips, so as to provide a much wider spacing for larger sheets yet still be able to handle small sheets. This may be provided as shown by automatically engaging only a selected pair of steering nips out of a selectable plurality of different fixed position sheet steering nips and disengaging the others by lifting their idlers out of the sheet path with cams rotated by a stepper motor with a rotation controlled by the sheet width signal.