Invention Grant
- Patent Title: Dual shaft media picking mechanism
- Patent Title (中): 双轴介质拾取机构
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Application No.: US12651196Application Date: 2009-12-31
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Publication No.: US08172220B2Publication Date: 2012-05-08
- Inventor: Larry Steven Foster , David Erwin Rennick , Niko J. Murrell , Jason Lee Rowe
- Applicant: Larry Steven Foster , David Erwin Rennick , Niko J. Murrell , Jason Lee Rowe
- Applicant Address: US KY Lexington
- Assignee: Lexmark International, Inc.
- Current Assignee: Lexmark International, Inc.
- Current Assignee Address: US KY Lexington
- Agent John Victor Pezdek
- Main IPC: B65H3/06
- IPC: B65H3/06

Abstract:
A media picking mechanism includes a pair of transmission shafts rotating in opposite directions. A housing is mounted around the pair of transmission shafts such that the first transmission shaft and the second transmission shaft are positioned substantially equidistant from a centerline of the housing. During a media picking operation, the rotation of the first transmission shaft of the pair of transmission shafts provides a first moment to the housing and rotation of a second transmission shaft of the pair of transmission shafts provides a second moment to the housing, which is equal and opposite to the first moment such that a net moment on the housing is near zero minimizing twisting of the housing. The two transmission shafts rotating in opposite directions, also results in substantially equal normal force to be applied by the first and second pick tires on the media.
Public/Granted literature
- US20110156343A1 Dual Shaft Media Picking Mechanism Public/Granted day:2011-06-30
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