Apparatus and method for automatically adjusting water film thic

Details Apparatus and method for automatically adjusting water film thic Apparatus and method for automatically adjusting water film thic

1997-09-29

2000-01-04

Royer, William J.

Electrophotography

Image formation

Fixing

399406, G03G 1500

Patent

active

060119470

ABSTRACT:
A device and method for automatically adjusting conditioner metering roll liquid film thickness. The device including a transfer roll that mates with a back-up roll to form a nip through which a sheet passes for wetting a side of the sheet. A metering roll mates with the transfer roll and has a portion thereof positioned in a liquid filled sump for liquid to be added to an outside surface thereof. An optical sensor is positioned to detect the type of reflected light from the liquid on the outside surface of the metering roll and gives off a signal that is received by a controller that actuates a stepper motor to move the metering roll in a predetermined direction until the correct liquid thickness is obtained on the surface of the metering roll.

REFERENCES:
patent: 5264899 (1993-11-01), Mandel
patent: 5434029 (1995-07-01), Moser
patent: 5832359 (1998-11-01), Acquaviva
patent: 5842105 (1998-11-01), Acquaviva
patent: 5850589 (1998-12-01), Cruz et al.

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