Photocopying – Including fiber optics
Patent
1983-04-15
1986-01-28
Braun, Fred L.
Photocopying
Including fiber optics
219216, G03G 1520
Patent
active
045667780
ABSTRACT:
A pressure fixing device including at least a pair of fixing rolls maintained in pressing engagement with each other such that their axes cross each other at a small angle .theta..sub.1 to allow a supporter supporting a toner image thereon to pass therebetween at a velocity V.sub.2 higher than the peripheral velocity V.sub.1 of the fixing rolls, and a guide member located anterior to the fixing rolls with respect to the direction of movement of the supporter and having a forward end located in spaced juxtaposed relation to peripheral surfaces of the fixing rolls. The peripheral velocity V.sub.1 of the fixing rolls is set such that the ratio V.sub.1 /V.sub.2 is above 0.95, and the guide member is arranged such that a gap between the forward end of the guide member and the fixing rolls is about 5-20 times greater than the thickness of the supporter before fixing of the toner image is effected at least in a central portion of the length of the fixing rolls. A line of contact between the fixing rolls is inclined at a small angle .theta.' with respect to a straight line perpendicular to the direction of movement of the supporter.
REFERENCES:
patent: 3937919 (1976-02-01), Clerx et al.
patent: 4192229 (1980-03-01), Tsunoi et al.
patent: 4200389 (1980-04-01), Matsui et al.
patent: 4378152 (1983-03-01), Edwards et al.
Braun Fred L.
Hitachi Metals Ltd.
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