Photocopying – Contact printing – Light boxes
Patent
1994-12-21
1996-06-25
Brase, Sandra L.
Photocopying
Contact printing
Light boxes
355256, G03G 2100
Patent
active
055305296
ABSTRACT:
A apparatus for sensing fluid parameters such as optical density, light transmittance, electrical conductivity and/or other characteristics of a fluid, including an emitter adapted to project a light beam and an electrical current and a detector adapted to transmit a first signal in response to receiving the light beam and a second signal in response to receiving the electrical current. A processor determines a set of fluid parameters according to the signals transmitted from the detector. A measured amount of diluent may be added to the fluid to increase light transmittance and/or electrical conductivity so as to enhance sensor operation and sensitivity.
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Denton Gary A.
Goodman Nancy B.
Henderson Thomas A.
Brase Sandra L.
Webber Don L.
Xerox Corporation
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