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:
Apr. 21, 2009
Filed:
Mar. 30, 2006
Brian Anthony Reichert, Lexington, KY (US);
Gregory Lawrence Ream, Lexington, KY (US);
Brian Anthony Reichert, Lexington, KY (US);
Gregory Lawrence Ream, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
In an image forming device where first and second components are disposed in rotating contact with one another, the first component is driven by a first motor and a second component is driven by a second motor through a gear train with some predetermined backlash. The first and second components can be controllably accelerated according to respective first and second velocity profiles. The second component may be accelerated at a rate faster than the first component by an amount sufficient to substantially eliminate backlash in the gear train by a time the first and second components reach a common process speed. The first and second profiles may be adapted such that the mathematical integral of the time area between curves defining the profiles substantially matches the backlash amount.