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:
Aug. 21, 2012
Filed:
Aug. 31, 2010
Daniel Robert Gagnon, Harrodsburg, KY (US);
Robert Warren Rumford, Lexington, KY (US);
John Thomas Writt, Lexington, KY (US);
Daniel Robert Gagnon, Harrodsburg, KY (US);
Robert Warren Rumford, Lexington, KY (US);
John Thomas Writt, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A method of calibrating stack height sensing in a media stack height monitoring system in an image forming machine includes sensing the angular position of a pick mechanism arm, generating electrical signals having levels correlated to the pick mechanism arm angular positions that correspond to different stack height levels, measuring and storing at least one value corresponding to the level of the electrical signal at least at one of two calibration points: 'full load' and 'stack out' conditions of the media stack, estimating either the amount or percent of media sheets remaining in the media stack corresponding to measured and stored value of the electrical signal level at the at least one calibration point, and indicating either of the amount or percent of media sheets remaining in the media stack.