Testing image density to control toner concentration and dynamic

Details Testing image density to control toner concentration and dynamic Testing image density to control toner concentration and dynamic

1993-07-19

1994-03-29

Fuller, Benjamin R.

Photocopying

Contact printing

Light boxes

118689, 355203, 355214, 355246, G03G 2100

Patent

active

052989445

ABSTRACT:
A developing system of the type using a two-component developer and capable of reproducing image densities and halftone images stably with no regard to changes in ambient conditions and aging. At least two toner image patterns each having a different toner density are formed on a photoconductive element. The amounts of toner deposited on the individual patterns are sensed by a photosensor, while the supply of toner to a developer and the dynamic range of a latent image are controlled in combination in response to the output of the photosensor.

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