Apparatus for measuring concentration of liquid developer

Details Apparatus for measuring concentration of liquid developer Apparatus for measuring concentration of liquid developer

1988-06-09

1990-07-24

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356440, 250576, G01N 2101

Patent

active

049437356

ABSTRACT:
Apparatus for measuring concentration of liquid developer or the like includes a holding member formed with an opening in which the liquid to be measured is retained. The holding member is driven to pass through a measuring station in which a photoelectric detector is disposed. The detector determines the amount of light transmitted through the liquid retained in the opening, thus measuring the concentration of colored component in the liquid.

REFERENCES:
patent: 3126906 (1964-03-01), Touzalin et al.
patent: 4021120 (1977-05-01), Muller et al.
patent: 4072424 (1978-02-01), McMullan et al.
patent: 4135100 (1979-01-01), Harada et al.
patent: 4228678 (1980-10-01), Slaton
patent: 4534647 (1985-08-01), Gross et al.

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