US PATENT SUBCLASS 399 / 289
.~.~.~ Having field curtain

Current as of: June, 1999
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399 /   HD   ELECTROPHOTOGRAPHY

130  DF  IMAGE FORMATION {30}
222  DF  .~ Development {5}
252  DF  .~.~ Dry development {10}
289.~.~.~ Having field curtain

DEFINITION

Classification: 399/289

Having field curtain:

(under subclass 252) Subject matter wherein toner (developing material) is transported by an alternating electric field.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

233, for toner conveyors with use of forces of electric charge or field.