Photocopying – Including fiber optics
Patent
1982-10-28
1985-03-19
Prescott, A. C.
Photocopying
Including fiber optics
355 14R, G03G 1500
Patent
active
045055726
ABSTRACT:
An electrostatic reproducing apparatus characterized in that a sensor unit consisting integrally of at least one light emitting element and one light receiving element is disposed close to the surface of a photosensitive member at a position downstream of the position where the printed sheet of recording paper separates from the photosensitive member. One of the light emitting elements is a visible-light emitting diode for detecting jamming of the sheet of recording paper and the other light emitting element is an infrared-light emitting diode for detecting the toner concentration.
REFERENCES:
patent: 3815988 (1974-06-01), McVeigh et al.
patent: 4303332 (1981-12-01), Sakai
patent: 4341460 (1982-07-01), Kohyama
Ashida Hisashi
Suzuki Keiichiro
Konishiroku Photo Industry Co,., Ltd.
Nilles James E.
Prescott A. C.
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