| NOMENCLATURE |
COPYING MACHINE, INDIRECT ELECTROSTATIC PROCESS. A MACHINE WHICH
APPLIES A UNIFORM POSITIVE CHARGE TO A SELENIUM COATED DRUM AND THEN
EXPOSES THE CHARGED SURFACE TO THE IMAGE OF THE ORIGINAL BY PROJECTING
THE IMAGE THROUGH A LENS SYSTEM. LIGHT REFLECTED OFF THE ORIGINAL
STRIKES THE DRUM DISSIPATING THE STATIC CHARGE. THE CHARGE ON THE DRUM
CORRESPONDING TO THE IMAGE OF THE ORIGINAL IS RETAINED. THE DRUM IS
SPRINKLED WITH BLACK POWDER THAT ADHERES TO THE CHARGED AREA OF THE
DRUM. THE ADHERING POWDER ON THE DRUM TRANSFERS THE IMAGE TO THE PAPER.
THE POWDER IMAGE IS THEN FUSED TO THE PAPER BY HEAT.
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