Automatic developability sensing in electrophotographic printing

Details Automatic developability sensing in electrophotographic printing Automatic developability sensing in electrophotographic printing

1982-02-16

1984-02-14

Moses, Richard L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 118689, 118690, G03G 1508

Patent

active

044313004

ABSTRACT:
An apparatus in which the developability of electrostatically charged particles in a mixture of particulate material is measured. The apparatus includes a transparent member positioned closely adjacent to a developer roller of an electrophotographic printing machine. Electrostatically charged particles are attracted from the particulate mixture being transported by the developer roller to the member. A beam of energy is transmitted through the member. The intensity of the internally reflected beam is detected and a signal generated indicative of the quantity of charged particles adhering to the member.

REFERENCES:
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patent: 3460893 (1969-08-01), Wilks, Jr.
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patent: 3727065 (1973-04-01), Maksymiak
patent: 3777173 (1973-12-01), Landrith
patent: 4155638 (1979-05-01), Blitzer
patent: 4226525 (1980-10-01), Sakamoto et al.
patent: 4273843 (1981-06-01), Fujita et al.
patent: 4306804 (1981-12-01), Sakamoto et al.

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