Browse Prior Art Database

Copy Machine Having Synchronized Fuser Roll

IP.com Disclosure Number: IPCOM000077872D
Original Publication Date: 1972-Oct-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Machmer, JA: AUTHOR

Abstract

Rotation of cusped fuser roll 10 is initiated in synchronism with delivery of copy 11 from copy drum 12 by control bell crank 13. Roll 10 has a cusped portion 14 that normally is aligned with backup roll 15, to provide a spacing 16 between the fusing roll 10 and the backup roll 15. Frame mounted latch 17 engages a latching surface 18 on the fuser roll 10 to maintain this normal position. The rotary position of drum 12 is transmitted by connection 19 to bellcrank 13 such that bellcrank 13 rotates counterclockwise to the position shown, as copy 11 approaches the nip between the fuser roll 10 and the backup roll 15. Roller 20 on bellcrank 13 acts against cam 21 on the fuser roll 10 to drive the fuser roll clockwise bringing it, under positive control, into surface engagement with the backup roll 16.

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Copy Machine Having Synchronized Fuser Roll

Rotation of cusped fuser roll 10 is initiated in synchronism with delivery of copy 11 from copy drum 12 by control bell crank 13. Roll 10 has a cusped portion 14 that normally is aligned with backup roll 15, to provide a spacing 16 between the fusing roll 10 and the backup roll 15. Frame mounted latch 17 engages a latching surface 18 on the fuser roll 10 to maintain this normal position. The rotary position of drum 12 is transmitted by connection 19 to bellcrank 13 such that bellcrank 13 rotates counterclockwise to the position shown, as copy 11 approaches the nip between the fuser roll 10 and the backup roll 15. Roller 20 on bellcrank 13 acts against cam 21 on the fuser roll 10 to drive the fuser roll clockwise bringing it, under positive control, into surface engagement with the backup roll 16.

Simultaneously, arm 22 of the bellcrank 13 drives against a cam surface 23 on fuser roll 10 to free the fuser roll 10 for rotation. Rotation of both rolls continues by motion delivered through chain 24, until the parts return to their position, as shown, where latch 17 again intercepts latching surface 18.

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