Current sensing development control system for an ionographic pr

Details Current sensing development control system for an ionographic pr Current sensing development control system for an ionographic pr

1990-08-20

1992-09-22

Fuller, Benjamin R.

Recorders

Electric recording

Electrochemical

346 11, 355208, 355246, 118653, 118689, 118690, G01D 1506

Patent

active

051501350

ABSTRACT:
An apparatus which develops an electrostatic image with marking particles. The apparatus includes a developer roller for transporting the marking particles to a position adjacent an electrostatic image for the purpose of developing the image. During deposition of the marking particles on the image, the apparatus senses the charge thereon and in response to the sensed charge, additional marking particles are dispensed into the developer roll housing for use by the developer roller. The apparatus further includes an impoved method for periodically determining the actual concentration of the marking particles within the developer housing in order to modify the rate at which the marking particles are replenished, thereby maintaining an equilibrium concentration of marking particles within the developer housing.

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