Photocopying – Contact printing – Light boxes
Patent
1991-12-05
1993-02-16
Grimley, A. T.
Photocopying
Contact printing
Light boxes
118688, 118689, 355208, G03G 1500
Patent
active
051875225
ABSTRACT:
A monitor for sensing the concentration of toner particles in the development station of an electrostatographic machine, which has a curved sump inner wall surface, includes a solenoid having a coil-form with one end adapted to be positioned adjacent to the outer surface of the sump wall, and a shield at least partially surrounding the solenoid. The shield has an end adjacent to the wall, and the surfaces of the ends of the central coil-form and the shield define a substantially cylindrical surface which conforms to the shape of the inner wall of the sump. Preferably, the surfaces of the ends of the coil-form and the shield are adapted to be substantially equal distant for the inner wall of the sump of a received development station.
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Dang T. A.
Eastman Kodak Company
Grimley A. T.
Howley David A.
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