Method and apparatus of detecting toner concentration of dry dev

Details Method and apparatus of detecting toner concentration of dry dev Method and apparatus of detecting toner concentration of dry dev

1978-08-23

1981-03-17

McGraw, Vincent P.

Optics: measuring and testing

With sample preparation

Depositing particles on optical surface

356445, 356440, 355 3DD, 118691, G01N 3328, G01N 2155, G03G 1500

Patent

active

042564026

ABSTRACT:
A method and apparatus to detect the toner concentration of two component dry developer comprising toner and carrier includes the use of a toner catcher having a conductive member and which is capacitively charged. The developer is applied to the catcher, which traps the toner to determine the toner content.

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patent: 3754821 (1973-08-01), Whited
patent: 3777173 (1973-12-01), Landrith
patent: 3791744 (1974-02-01), Erny et al.
patent: 3870197 (1975-03-01), Landrith
Smith, Toner Concentration Control, Apr. 1977, IBM Technical Disclosure Bulletin.

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