Electrophotographic copying apparatus having ribbon-shaped toner

Details Electrophotographic copying apparatus having ribbon-shaped toner Electrophotographic copying apparatus having ribbon-shaped toner

1992-04-17

1994-09-27

Picard, Leo P.

Photocopying

Contact printing

Light boxes

355274, 355290, G03G 1520

Patent

active

053511140

ABSTRACT:
An electrophotographic apparatus has a heat-resistant endless belt having a portion which runs from a transfer position to a heat-fixing position, a driving drum for driving the endless belt, a transfer roller for transferring, at the transfer position, a toner image of information to be recorded from a photosensitive drum to the endless belt, a recording medium feed roller for feeding a sheet-type recording medium to the heat-fixing position, and a heater and a pressure roller which are disposed in the heat-fixing position and cooperative to transfer the toner image from the endless belt to the recording medium. The heater is disposed on the inner side of a loop of the endless belt, while the pressure roller is disposed outside the loop. The photosensitive drum, endless belt, transfer roller and heater are mounted on a common frame which is demountable from the frame of the apparatus. The pressure roller is mounted on the apparatus frame so as to be movable towards and away from the endless belt, thereby facilitating mounting and demounting of the common frame.

REFERENCES:
patent: 4420243 (1983-12-01), Baker et al.
patent: 4435067 (1984-03-01), Draai et al.
patent: 4780742 (1988-10-01), Takahashi et al.
patent: 4912514 (1990-03-01), Mizutani
patent: 4985733 (1991-01-01), Kurotori et al.
patent: 5057875 (1991-10-01), Itoh
patent: 5115278 (1992-05-01), Maruta et al.
Patent Abstracts of Japan P-1195, Apr. 25, 1991 vol. 15/No. 166.
Patent Abstracts of Japan P-603 Aug. 8, 1987 vol. 11/No.243.
Patent Abstracts of Japan P-1191 Apr. 17, 1991 vol. 15/No. 153.

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