Multi-layer organic overcoat for particulate transport electrode

Details Multi-layer organic overcoat for particulate transport electrode Multi-layer organic overcoat for particulate transport electrode

1998-09-30

2000-10-24

Nakarani, D. S.

Stock material or miscellaneous articles

Composite

Of polycarbonate

428457, B32B 2736, B32B 1504

Patent

active

061364428

ABSTRACT:
A multi-layer organic, top-surface, semiconducting dielectric overcoat, having a selected time constant permits electric field charge and dissipation at a selected rate to facilitate particulate material movement over an underlying electrode grid. The coating may be made from a first layer including an oxidant, and a second layer thereover which omits said oxidant. Each layer may further include a compound including a polymer such as bisphenol A polycarbonate, and a charge transport molecule such as m-TBD. A planarized, wear resistant, chemically stable surface, with minimized inter-electrode build-up are also provided by the overcoat.

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