Photocopying – Contact printing – Light boxes
Patent
1988-07-05
1990-09-11
Braun, Fred L.
Photocopying
Contact printing
Light boxes
118689, 355245, 355260, G03G 1508
Patent
active
049566687
ABSTRACT:
A toner monitor in an electrostatographic machine is automatically calibrated when a new replaceable development station is loaded into the machine. The detected toner concentration in the development station is used by the monitor as a reference signal against which future readings are compared. The reference signal is reset upon machine power-up to correspond to the detected toner concentration in the development station, but only when there is a fresh development station in the machine. Resetting the reference signal only when there is a fresh development station prevents erroneous reference signals which would result if the developer mix concentration was other than perfect at power-down.
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JP, 60-250372(A) (Canon K.K.), Dec. 11, 1985.
Arnold Kenneth A.
Chang Wunan
Robinson Kelly S.
Beatty Robert
Braun Fred L.
Eastman Kodak Company
Sales Milton S.
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