Electrophotographic apparatus having a development unit shifter

Details Electrophotographic apparatus having a development unit shifter Electrophotographic apparatus having a development unit shifter

1997-09-05

1999-01-12

Lee, S.

Electrophotography

Having particular structure

Modular or displaceable

G03G 2116

Patent

active

058600434

ABSTRACT:
An electrophotographic apparatus made up of a toner image transfer roller and a developing unit. The developing unit is provided with a developing unit shifter to shift the developing unit upwards or downwards so as to make the photoconductive drum contact or separated from the toner image transfer roller according to whether a sheet of paper is supplied between them or not. The shifter is made up of a pair of rotating cams that cause the developing unit containing the photoconductive drum to make contact with the transfer roller.

REFERENCES:
patent: 4609276 (1986-09-01), Mitzutani
patent: 4931839 (1990-06-01), Tompkins et al.
patent: 5051783 (1991-09-01), Sato
patent: 5089849 (1992-02-01), Hiraoka
patent: 5534984 (1996-07-01), Inoue
patent: 5596395 (1997-01-01), Sawamura et al.

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