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FUSER ROLL DRIVE

IP.com Disclosure Number: IPCOM000024626D
Original Publication Date: 1981-Jun-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 55K

Publishing Venue

Xerox Disclosure Journal

Abstract

In a hot roll fusing system employed in an electrophotographic printing machine, a fusing system comprises a heated roll 10 and a pressure roll 12. A reversible motor 14 drives cam 16 and roll 10 through sprocket gears 18. One-way clutch 20 couples one sprocket gear 18 to cam 16. One-way clutch 22 couples another sprocket gear 18 to heated roll 10. When motor 14 rotates in a clockwise direction, clutch 22 couples sprocket gear 18 to heated roll 10 so as to rotate roll 10 in a clockwise direction. At this time, clutch 20, is disengaged from cam 16. When motor 14 rotates in a counterclockwise direction, clutch 22 is disengaged and clutch 20 is engaged. Thus, when motor 14 rotates in a counterclockwise direction, cam 16 rotates and roller 10 remains substantially stationary. Cam 16 is rotated so as to permit roller 10 to pivot away from pressure roller 12. In this way, a single drive motor selectively drives the fuser rollers and the engagement cams through one-way clutches.

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XEROX DISCLOSURE JOURNAL

FUSER ROLL DRIVE
Proposed J.N. Kluger Classification

U.S. c1. 355/3
Int. CI. G03g 15/00

c /d

In a hot roll fusing system employed in an electrophotographic printing machine, a fusing system comprises a heated roll 10 and a pressure roll 12. A reversible motor 14 drives cam 16 and roll 10 through sprocket gears 18. One-way clutch 20 couples one sprocket gear 18 to cam 16. One-way clutch 22 couples another sprocket gear 18 to heated roll 10. When motor 14 rotates in a clockwise direction, clutch 22 couples sprocket gear 18 to heated roll 10 so as to rotate roll 10 in a clockwise direction. At this time, clutch 20, is disengaged from cam 16. When motor 14 rotates in a counterclockwise direction, clutch 22 is disengaged and clutch 20 is engaged. Thus, when motor 14 rotates in a counterclockwise direction, cam 16 rotates and roller 10 remains substantially stationary. Cam 16 is rotated so as to permit roller 10 to pivot away from pressure roller 12. In this way, a single drive motor selectively drives the fuser rollers and the engagement cams through one- way clutches.

Volume 6 Number 3 May/June 1981 131

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132 XEROX DISCLOSURE JOURNAL

Volume 6 Number 3 May/June 1981

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