Printer/copier with disposable toner cartridge

Details Printer/copier with disposable toner cartridge Printer/copier with disposable toner cartridge

1985-04-02

1987-01-27

Prescott, A. C.

Photocopying

Including fiber optics

355 14D, 222DIG1, 430 30, 430102, G03G 1508

Patent

active

046391169

ABSTRACT:
A developer unit for use in connection with an electrophotographic printer is disclosed. Toner is provided to the developer unit by means of a disposable cartridge so that maintenance requirements are significantly reduced. The developer includes a sensing circuit which measures the inductance of the toner/carrier mix and controls the rate at which toner is introduced into the toner carrier mix.

REFERENCES:
patent: 2904000 (1959-09-01), Fisher et al.
patent: 3339807 (1967-09-01), Eichorn
patent: 3385500 (1968-05-01), Lavander
patent: 4364656 (1982-12-01), Yanagawa
patent: 4478512 (1984-10-01), Zoltner
patent: 4491161 (1985-01-01), Tamura et al.
patent: 4499169 (1985-02-01), Haneda et al.
patent: 4514480 (1985-04-01), Wada et al.
patent: 4523834 (1985-06-01), Pelda et al.
patent: 4540268 (1985-09-01), Toyono et al.

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