Photocopying – Contact printing – Light boxes
Patent
1988-07-25
1990-04-24
Grimley, A. T.
Photocopying
Contact printing
Light boxes
118 60, 219216, 355326, G03G 1520
Patent
active
049203827
ABSTRACT:
A roller fixing device, for example, a pressure roller fuser includes a roller to which a release agent is to be applied by a wick. To correct a tendency of certain wicks to apply the release liquid in a pattern including spots of locally excessive liquid, the wick is disengaged from the roller sufficiently prior to the fixing operation to permit the liquid to spread eliminating the spots of locally excessive liquid. Preferably, the roller completes at least one revolution in contact with another roller after disengagement and prior to the beginning of fixing. To assist that spread, a sheet of more absorbent material, for example paper, is fed through the fixing operation during this period. This mode of operation is used for specific receiver sheets and toner conditions, for example, those encountered in making color transparencies. A more conventional wicking mode is used for other reproductions on paper and black toner transparencies.
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Cahill David F.
Mills Borden H.
Beatty Robert
Eastman Kodak Company
Grimley A. T.
Treash Leonard W.
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