Printer autocontrast control

Details Printer autocontrast control Printer autocontrast control

1989-11-15

1991-03-26

Griffin, Donald A.

Recorders

Electric recording

Electrochemical

355246, G01D 1500, G03G 2100

Patent

active

050033271

ABSTRACT:
A printer autocontrast system measures the current passing from a toner reservoir to a charged dielectric member which receives toner from the reservoir. The charge delivered to the drum in this way is scaled and compared to an estimate of the intended image charge to develop an error signal. The error signal corrects a control parameter to adjust the operation of an electrographic printhead which forms a latent image on the dielectric member.

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patent: 4796065 (1989-01-01), Kanbayashi
patent: 4916488 (1990-04-01), Kimura

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