Process control for electrophotographic recording

Details Process control for electrophotographic recording Process control for electrophotographic recording

1996-01-31

1997-05-20

Brase, Sandra L.

Electrophotography

Control of electrophotography process

Control of developing

399 51, G03G 2100

Patent

active

056317280

ABSTRACT:
In an electrophotographic apparatus, an apparatus and method is provided for controlling reproduction by controlling adjustments to the parameters V.sub.o and E.sub.o. A density parameter D.sub.OUT of an exposed and developed maximum density patch is measured. An error, .DELTA.D.sub.OUT, in the measured density parameter is calculated from a density setpoint. The error, .DELTA.D.sub.OUT is multiplied by first and second constants to obtain respective adjustment values used for adjusting E.sub.o and V.sub.o. The control operation is repeated periodically to provide new adjustment values that are used for adjusting E.sub.o and V.sub.o and a fixed ratio is always maintained between the first and second constants.

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