Fuser for reproduction apparatus with minimized temperature droo

Details Fuser for reproduction apparatus with minimized temperature droo Fuser for reproduction apparatus with minimized temperature droo

1998-11-20

2000-04-18

Moses, Richard

Electrophotography

Control of electrophotography process

Control of fixing

399330, 219216, G03G 1520

Patent

active

060525460

ABSTRACT:
A fuser, for a reproduction apparatus, having at least one heated fuser roller operating at a setpoint temperature to permanently fix a marking particle image to a receiver member, and a mechanism for controlling temperature droop in the heated fuser roller. The temperature droop controlling mechanism includes an external heat source movable to a position in operative contact with the heated fuser roller and a nonoperative position remote from the heated fuser roller. A logic and control unit is provided for moving the external heat source from the nonoperative remote position to the operative position the heated fuser roller on start up of the reproduction apparatus, and as soon as a reproduction operation job run is started, to supply heat to the heated fuser roller thus maintaining its surface temperature substantially at the setpoint temperature. The unit also turns on a fuser roller heating device to bring the heated fuser roller surface temperature toward the setpoint temperature. When the heated fuser roller has been reheated to its setpoint temperature, the logic and control unit moves the external heat source to the nonoperative position remote from the heated fuser roller, whereby temperature droop in the heated fuser roller is minimized.

REFERENCES:
patent: 5053828 (1991-10-01), Ndebi et al
patent: 5055884 (1991-10-01), Ndebi et al.

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