Ceramic coating composition for a hybrid scavengeless developmen

Details Ceramic coating composition for a hybrid scavengeless developmen Ceramic coating composition for a hybrid scavengeless developmen

1994-12-21

1995-12-05

Moses, R. L.

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Contact printing

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355247, 118654, 492 18, 492 28, 492 60, G03G 1506

Patent

active

054734185

ABSTRACT:
A donor roll having a ceramic coating for use with an electrode structure in a scavengeless development unit of an electrostatographic printer. The ceramic coating consist essentially of a suitable mixture of alumina and titania by weight giving the donor roll a desired resistivity within a range of 2.0.times.10.sup.7 -4.2.times.10.sup.8 (Ohm-cm), a discharge time constant of about 550 microseconds, and a dielectric constant within a range of 16-24 at 100.KHz.

REFERENCES:
patent: 5245392 (1993-09-01), Behe et al.
patent: 5322970 (1994-06-01), Behe et al.
patent: 5384627 (1995-01-01), Behe et al.

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