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:
Jul. 03, 2018
Filed:
Aug. 24, 2017
Xerox Corporation, Norwalk, CT (US);
Ron E Dufort, Rochester, NY (US);
Steven R Moore, Pittsford, NY (US);
Timothy D Slattery, Elma, NY (US);
Erwin Ruiz, Rochester, NY (US);
Charles J Bennett, Hilton, NY (US);
Linn C Hoover, Webster, NY (US);
XEROX CORPORATION, Norwalk, CT (US);
Abstract
A sheet stacking system is disclosed that has improved tolerance for sheets that are not flat. Successive sheets are aligned onto a stack by a plurality of registration belts. The heights of the pivoting registration belts are compared with one another to determine the unevenness of the top of the stack. This unevenness is represented by the difference between the heights of the highest and lowest registration belt Δand is monitored to quantify the planarity of the top of the stack. When the unevenness (Δ) exceeds a threshold, the system switches to a modified method to control the elevation of the stack. This method may include stopping the machine from stacking before the unevenness is too large for the registration belts to uniformly drive sheets. This invention prevents the stacker from attempting to stack when sheets are expected to skew thereby preventing jams and unusable stacks.