Electrostatic copying machine comprising improved arrangement of

Details Electrostatic copying machine comprising improved arrangement of Electrostatic copying machine comprising improved arrangement of

1981-08-17

1983-09-13

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3BE, G03G 1500

Patent

active

044038518

ABSTRACT:
A cover (24) is hinged to the top of a housing (22) in such a manner as to be rockable from a closed position and an open position. A platen (23) is provided on top of the cover (24) for supporting an original document (26). A movable charging and scanning unit (32), endless photoconductive belt (27), cleaning unit (61) and fixing unit (54) are provided in the cover (24). A developing unit (39), sheet cassette (44), (46) and feed units and a transfer unit (41) are provided in the housing (22). The various units are easily detachable from the bottom of the cover (24) or the top of the housing (22), thus facilitating easy maintenance and removal of jammed sheets. The overall arrangement provides a substantial reduction in the size of the copying machine (21), especially in the vertical dimension. The apparatus is arranged and controlled in such a manner that for a multiple copying operation, the belt (27) is alternatingly stopped while the charging and scanning unit (32) forms an electrostatic image thereon and then driven for one half revolution. For a single copying operation, the belt (27) is stopped while the charging and scanning unit (32) forms an electrostatic image thereon and then driven for one revolution.

REFERENCES:
patent: B500171 (1976-03-01), Doi et al.
patent: 3445626 (1969-05-01), Michaels
patent: 3792924 (1974-02-01), Matsuda et al.
patent: 3836245 (1974-09-01), Hastwell et al.
patent: 3966316 (1976-06-01), Pfeifer et al.
patent: 4077711 (1978-03-01), Akamatsu
patent: 4084901 (1978-04-01), Aasen et al.
patent: 4129373 (1978-12-01), Ogura et al.

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