Charged particle sensor

Details Charged particle sensor Charged particle sensor

1982-04-30

1984-05-08

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 430 30, 430120, 118691, G03G 1508

Patent

active

044471459

ABSTRACT:
An apparatus in which the developability of electrostatically charged particles in a mixture of particulate material is measured. The apparatus includes a pair of spaced-apart conductive plates through which at least a portion of the particulate mixture flows. One of the plates is transparent with a member being secured thereto. The transparent plate is electrically biased to attract charged particles thereto. A beam of energy is transmitted through the transparent plate and member. The intensity of the internally reflected beam is detected to provide a measurement of the quantity of charged particles adhering to the transparent plate.

REFERENCES:
patent: 2304814 (1942-12-01), Glasser
patent: 3578975 (1971-05-01), Wheeler
patent: 3635373 (1972-01-01), Kuhl et al.
patent: 3757999 (1973-09-01), Maksymiak
patent: 3783270 (1974-01-01), Kamachi
patent: 3918818 (1975-11-01), Giles
patent: 4111151 (1978-09-01), Ruckdeschel
patent: 4195260 (1980-03-01), Sakamoto et al.
patent: 4226525 (1980-10-01), Sakamoto et al.
patent: 4273843 (1981-06-01), Fujita et al.

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