US PATENT SUBCLASS 399 / 58
.~.~ Concentration control

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.~.~ Concentration control {3}
59  DF  .~.~.~> Setting of reference value
60  DF  .~.~.~> Detection of developed image
61  DF  .~.~.~> Detection of toner in developing unit {1}

DEFINITION

Classification: 399/58

Concentration control:

(under subclass 53) Subject matter wherein an amount or percentage of toner within the toner and carrier mixture is controlled.

(1) Note. The concentration is generally effected by adding new toner to the developing unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30, for toner concentration detector.

OTHER CLASSIFICATION SYSTEMS:

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

jpofiG03G15/08 115, for detecting and controlling the toner concentration.

epcG03G15/08H1, for detection or control of the toner concentration.