US PATENT SUBCLASS 399 / 63
.~.~.~.~.~ Magnetic detector

Current as of: June, 1999
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399 /   HD   ELECTROPHOTOGRAPHY

38  DF  CONTROL OF ELECTROPHOTOGRAPHY PROCESS {15}
53  DF  .~ Control of developing {4}
58  DF  .~.~ Concentration control {3}
61  DF  .~.~.~ Detection of toner in developing unit {1}
62  DF  .~.~.~.~ Concentration detection {2}
63.~.~.~.~.~ Magnetic detector

DEFINITION

Classification: 399/63

Magnetic detector:

(under subclass 62) Subject matter wherein a means or method is provided for detecting the concentration by using the magnetic properties of toner or carrier material.

OTHER CLASSIFICATION SYSTEMS:

ipc{2}G03G15/10, for using a liquid developer.

epcG03G15/08H1M, for a concentration being measured by magnetic means.