Photocopying – Contact printing – Light boxes
Patent
1993-12-15
1995-10-31
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
355246, 310365, G03G 1508
Patent
active
054634490
ABSTRACT:
A piezoelectric toner mass sensor to be positioned adjacent to a toner applicator in an electrostatographic recording apparatus. The piezoelectric sensor has a circular central crystal having its front and rear surfaces metallized, the two metallized surfaces being concentric with one another. The front surface of the sensor directed toward the toner applicator is smaller than the rear surface. Reducing the area of metallization on the piezoelectric toner mass sensor greatly increases sensitivity of the device. In addition, limiting the development area on the sensor facilitates the cleaning of the piezoelectric element and facilitates the mounting of the sensor in a suitable holder.
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Morse Theodore H.
Potucek Martin
Rimai Donald S.
Sonnenberg Sven
Arndt Dennis R.
Eastman Kodak Company
Pendegrass Joan H.
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