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CONSTANT RIBBON TENSION DEVICE

IP.com Disclosure Number: IPCOM000023037D
Original Publication Date: 1976-Jul-31
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 191K

Publishing Venue

Xerox Disclosure Journal

Abstract

In the drawing, ribbon 10 (contained in cartridge 11) is drawn from supply reel 12 by ribbon feed means (not shown), The ribbon 10 is drawn around the curved end of a 9danceru arm 13. A friction arm 14 is in contact with the periphery of the wound ribbon on the supply reel 12. Arms 13 and 14 utilize one~piececonstruction, As the ribbon 10 is drawn from the supply reel 12, arm 14 acts to provide optimum drag, creating progressively less drag force as the ribbon diameter decreases. Arm 13 is flexed upward when the ribbon feed means tries to overcome the inertia of the supply reel 12. The wrap angle or area of contact between the ribbon 10 and the curved end of arm 13 decreases as the amount of ribbon on the supply reel 12 becomes less with a correspond~ ing decrease in the inertia of the supply reel.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

CONSTANT RIBBON TENSION DEVICE
Kenneth R. Frechette

It

Proposed Classification
U.S. Cl. 197/151
mt. CL B41j 33/14

12

In the drawing, ribbon 10 (contained in cartridge 11) is
drawn from supply reel 12 by ribbon feed means (not shown),
The ribbon 10 is drawn around the curved end of a 9danceru
arm 13. A friction arm 14 is in contact with the periphery
of the wound ribbon on the supply reel 12. Arms 13 and 14
utilize one~piececonstruction, As the ribbon 10 is drawn
from the supply reel 12, arm 14 acts to provide optimum
drag, creating progressively less drag force as the ribbon
diameter decreases. Arm 13 is flexed upward when the ribbon
feed means tries to overcome the inertia of the supply reel
12. The wrap angle or area of contact between the ribbon
10 and the curved end of arm 13 decreases as the amount of
ribbon on the supply reel 12 becomes less with a correspond~
ing decrease in the inertia of the supply reel.

Volume 1 Number 7 July 1976 37

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Page 2 of 2

38 XEROX DISCLOSURE JOURNAL

Volume 1 Number 7 July 1976

[This page contains 1 picture or other non-text object]