Developing electrode type electrostatic copying machines

Details Developing electrode type electrostatic copying machines Developing electrode type electrostatic copying machines

1976-05-25

1978-12-05

Braun, Fred L.

Photocopying

Including fiber optics

118651, 118657, 271193, 355 3SH, G03G 1500, B05B 502

Patent

active

041283287

ABSTRACT:
An electrostatic copying machine uses a copy sheet having a dielectric layer or photoconductive layer overlaying an electrically conductive layer, and includes image forming structure for forming an electrostatic latent image on the copy sheet, a developer for developing the electrostatic latent image on the copy sheet in the form of a toner image according to the developing electrode method, and a fixer for fixing the toner image on the copy sheet. The developing electrodes are electrically connected to each other but insulated from the body proper of the copying machine. The copy-sheet-transporting passage between the developing electrodes and voltage-impressing structure, which impresses a voltage on the electrically conducting layer of the copy sheet, is of a length shorter than that of the copy sheet. The voltage impressing structure may be positioned at one or more of the electrostatic-latent-image-forming apparatus, fixer, or the transporter structure positioned between the developer and the fixer.

REFERENCES:
patent: 3323794 (1967-06-01), Brandt
patent: 3684363 (1972-08-01), Ito et al.
patent: 3689144 (1972-09-01), Kaufman
patent: 3749059 (1973-07-01), Sato
patent: 3870017 (1975-03-01), Kratcoski et al.
patent: 3941469 (1976-03-01), Okamoto
patent: 3981498 (1976-09-01), Fletcher

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