Heat and pressure roll fuser and roll engaging mechanism therefo

Details Heat and pressure roll fuser and roll engaging mechanism therefo Heat and pressure roll fuser and roll engaging mechanism therefo

1985-11-29

1987-12-29

Grimley, Arthur T.

Photocopying

Including fiber optics

100281, 100168, 100176, 100 93RP, 74520, G03G 1520

Patent

active

047164352

ABSTRACT:
Mechanism for effecting pressure engagement between two roll fuser members used for fusing toner images to copy substrates. The mechanism is characterized by simplicity of design and serviceability. To this end, one of two roll fuser members is supported on bearing surfaces such that it is lifted or raised upwardly through engagement with the other fuser member as it is moved upwardly. Upward movement of the last mentioned roll is effected by pair of lever arms which serve as the support for that roll. Each lever arm is operatively attached to an overcenter toggle structure which is actuatable either by rotary or linear motion of an actuator mechanism.
An adjustment device is provided for varying the load applied to the rolls.

REFERENCES:
patent: 4104963 (1978-08-01), Fortmann
patent: 4265138 (1981-05-01), Sato
patent: 4280443 (1981-07-01), Bogoshiam
patent: 4464985 (1984-08-01), Asanuma et al.
patent: 4498757 (1985-02-01), Lance et al.
patent: 4598990 (1986-07-01), Kusumoto et al.

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