Browse Prior Art Database

BELT-DRIVEN CAPSTANLESS CABLE DRIVE

IP.com Disclosure Number: IPCOM000026607D
Original Publication Date: 1992-Dec-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 68K

Publishing Venue

Xerox Disclosure Journal

Abstract

Capstans, as used in drive systems on xerographic copiers and scanners, convert motor generated rotary motion to a linear cable movement. When they are required to move a carriage, capstans must be wound with enough cable to accommodate the full length travel of the load bearing body. Often times they are also outfitted with an additional speed reduction mechanism, such as a gear train or a timing belt.

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XEROX DISCLOSURE JOURNAL

BELT-DRIVEN CAPSTANLESS Proposed Classification CABLE DRIVE U.S. C1.355/233
Paul J. Kim Int. C1. G03g 15/28

XEROX DISCLOSURE JOURNAL Vol. 17 No 6 Xovember/December 1992 449

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BELT-DRIVEN CAPSTANLESS CABLE DRIVE(Cont'd)

Capstans, as used in drive systems on xerographic copiers and scanners, convert motor generated rotary motion to a linear cable movement. When they are required to move a carriage, capstans must be wound with enough cable to accommodate the full length travel of the load bearing body. Often times they are also outfitted with an additional speed reduction mechanism, such as a gear train or a timing belt.

The present invention proposes a cable driven design which replaces a normal capstan implementation. As illustrated in the Figure, there is shown a continuous timing belt 12 wrapped around two pulleys 14, one of said pulleys being driven by a motor (not shown). The timing belt is fastened to a scan carriage drive cable 18, which is located between two pulleys 20, via clamp 16.

The advantages of a belt drive, capstanless cable drive over a capstan system include: 1) improved constant cable speed through the elimination of up and down or side to side cable movement as it winds and unwinds from a capstan,
2) fewer parts when speed reduction is required, 3) easier assembly due to the elimination of multiple wraps on a capstan, and 4) shorter cable length.

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