Developer quality monitoring device

Details Developer quality monitoring device Developer quality monitoring device

1980-03-06

1982-05-25

Schmidt, Frederick R.

Fluent material handling, with receiver or receiver coacting mea

With signal, indicator, recorder, inspection means or exhibitor

73432R, 141192, 222DIG1, 355 3DD, B65B 326, G01G 1500

Patent

active

043311849

ABSTRACT:
A developer quality monitoring device for monitoring the mixed state of toners and carriers in the developer used for developing a latent image formed on a recording medium, wherein a developer circulating mechanism and a toner density detector are used in common, an electrical signal representative of a decrement of toner density and a magnitude of pulsations is produced, and by using this electrical signal, decay condition of the developer is monitored and decay condition limit is discriminated.

REFERENCES:
patent: 4210864 (1980-07-01), Miyakawa
patent: 4230070 (1980-10-01), Murasaki
patent: 4240375 (1980-12-01), Terashima
patent: 4257348 (1981-03-01), Prohaska

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