Variable dwell fuser

Details Variable dwell fuser Variable dwell fuser

1998-07-10

1999-12-07

Jeffery, John A.

Electric heating

Heating devices

Combined with diverse-type art device

219388, 219469, 399328, 399329, 399320, 399122, 399 67, 399 68, H05B 100

Patent

active

059987618

ABSTRACT:
A variable dwell heat and pressure belt fuser for imparting selectable gloss to color toner images. A hybrid belt/roll fuser which has both a roll/roll nip and a belt/roll nip where the size of the latter can be varied by adjusting the position of the fuser roll around the axis of the pressure roll or by varying the location of the belt transport idler roll relative to the heat and pressure fuser members. For any given speed and nip pressure, the high pressure dwell between the fuser and pressure rolls is fixed but the low pressure dwell between the fuser roll and fuser belt can be varied from zero to four (or more) times the high pressure dwell in a prescribed manner.

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patent: 5250998 (1993-10-01), Ueda et al.
patent: 5729812 (1998-03-01), Moser
patent: 5887235 (1999-03-01), Wayman
patent: 5890047 (1999-03-01), Moser

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