Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1977-12-22
1979-09-18
Envall, Jr., Roy N.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
355 3FU, 355132, 432 60, 432228, G03G 500
Patent
active
041684249
ABSTRACT:
A method and apparatus for controlling a copying machine of the type in which a toner image bearing member is passed between heating and pressure rollers for thermally fixing the toner image on such member, in which the rollers are rotated under low pressure by a reversible sub-motor; upon initiating a copying action under high pressure a main motor is used to drive both the rollers and the paper feeding mechanism, while the sub-motor is reversed to actuate a high-pressure forming mechanism. At the end of the copying action, the main motor is cut out and the sub-motor again reversed to its original direction to rotate the rollers under low pressure; rotation of the rollers by the sub-motor may be at a lower speed than when they are driven by the main motor.
REFERENCES:
patent: 3754819 (1973-08-01), Braun
patent: 3861863 (1975-01-01), Kudsi
patent: 3907493 (1975-09-01), Thettu
patent: 3908589 (1975-09-01), Bar-On
patent: 3951585 (1976-03-01), Fujimoto
patent: 3998584 (1976-12-01), Wada et al.
patent: 4081213 (1978-03-01), Bar-On et al.
Kasahara Junkichi
Matsuzaki Tsuneo
Envall Jr. Roy N.
Konishiroku Photo Industry Co,., Ltd.
Roskoski Bernard
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