Electrophotographic apparatus

Details Electrophotographic apparatus Electrophotographic apparatus

1993-07-08

1994-07-05

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355211, 355212, G03G 500

Patent

active

053271971

ABSTRACT:
An electrophotographic apparatus capable of forming a high quality image by a contact type developing system using a photoconductive belt and a developing roller. The belt has a tubular configuration. A single friction roller is made of rubber and received in the tubular belt to drive it in a rotary motion. The friction roller has an outside diameter smaller than the inside diameter of the belt to provide the belt with a slack. The developing roller contacts the slack of the belt and, therefore, contacts the belt over a sufficient nip width.

REFERENCES:
patent: 3941472 (1976-03-01), Nagahara et al.
patent: 4341464 (1982-07-01), Vola
patent: 5038172 (1991-08-01), Schreyer
patent: 5101234 (1992-03-01), Suzuki et al.
patent: 5262826 (1993-11-01), Hediger

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