Photocopying – Contact printing – Light boxes
Patent
1989-02-28
1990-07-10
Braun, Fred L.
Photocopying
Contact printing
Light boxes
271265, 219216, 355309, 355326, G03G 1520
Patent
active
049410210
ABSTRACT:
An image forming apparatus in which a recording material having an unfixed image formed thereon by an image forming device is conveyed to a fixing device having a pair of rotatable members by a conveyor and the recording material is nipped and conveyed by the pair of rotatable members so that the unfixed image is fixed on the recording material. The pair of rotatable members is selectively rotatable at a first peripheral speed lower than the speed at which the conveyor conveys the recording material and a second peripheral speed higher than the first peripheral speed. The pair of rotatable members are rotated at the first peripheral speed to convey the recording material and form a loop of recording material rearwardly of the pair of rotatable members with respect to the direction of conveyance of the recording material, whereafter the peripheral speed of the pair of rotatable members is changed over from the first peripheral speed to the second peripheral speed to suppress the growth of the loop of the recording material.
REFERENCES:
patent: 3937919 (1976-02-01), Clerx et al.
Hoshino Osamu
Murayama Yasushi
Uchida Takashi
Braun Fred L.
Canon Kabushiki Kaisha
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