Photocopying – Contact printing – Light boxes
Patent
1993-02-26
1994-02-22
Grimley, A. T.
Photocopying
Contact printing
Light boxes
219216, 355290, 432 60, G03G 1520
Patent
active
052892484
ABSTRACT:
A fixing unit includes a photosensitive drum for bearing an image, an image forming member for forming the image on the photosensitive drum, a transfer charger for transferring the image formed by the image forming member to paper, a heating roller having a heat source for generating heat when a power supply is turned on for heating the paper to which the image is transferred by the transfer charger, a rotatable pressing roller which is brought into contact with and separated from the heating roller, for pressing the paper against the heating roller, a rotating plate for separating the pressing roller from the heating roller when the power supply is turned on, and a driving mechanism for rotating the pressing roller separated from the heating roller by the rotating plate. The driving mechanism includes a first gear arranged in the heating roller, a second gear arranged in the pressing roller, a driving gear engaged with the first gear and engaged with the second gear by a driven gear, and a driving motor for rotating the driving gear.
REFERENCES:
patent: 3998584 (1976-12-01), Wada et al.
patent: 4163893 (1979-08-01), Turini
patent: 4598990 (1986-07-01), Kusumoto et al.
patent: 5017970 (1991-05-01), Sakata
patent: 5111250 (1992-05-01), Kashiwagi
Grimley A. T.
Kabushiki Kaisha Toshiba
Royer William J.
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