Closed loop control of nip pressure in a fuser system

Details Closed loop control of nip pressure in a fuser system Closed loop control of nip pressure in a fuser system

2006-09-26

2006-09-26

Verbitsky, Gail (Department: 2859)

Electrophotography

Control of electrophotography process

Control of fixing

C399S033000, C399S320000, C100S15500G, C219S216000

Reexamination Certificate

active

07113717

ABSTRACT:
A fuser system of a xerographic device, including a fuser member and a pressure member in which the pressure member is made to exert pressure upon the fuser member so as to form a nip having a nip width between the fuser member and the pressure member, wherein the nip width is set to within a specification nip width range, a drive system for driving said fuser member relative to said pressure roll; a sensor for monitoring the torque of said drive system; a processor in communication with the sensor that receives torque data from the sensor, wherein the processor determines a current nip pressure uniformity from the torque data and compares the current nip pressure uniformity to the specification nip pressure uniformity range, and a nip pressure adjustment device in communication with the processor, which adjusts the current nip pressure uniformity to be within the specification nip pressure uniformity range.

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Copending U.S. Appl. No. 10/759027, entitled “Closed Loop Control Of NIP Width In A Fuser System,” filed on Dec. 19, 2003 by Donald M. Bott et al.
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