Belt support and tracking apparatus

Details Belt support and tracking apparatus Belt support and tracking apparatus

1985-12-24

1987-04-14

Prescott, A. C.

Photocopying

Including fiber optics

355 3R, 355 16, G03G 1500

Patent

active

046573704

ABSTRACT:
An apparatus for transporting and tracking a belt arranged to move in a predetermined path and for controlling lateral movement of the belt from the predetermined path comprises a stationary non-rotating arcuate tracking shoe with a belt defining surface for supporting a belt thereon and including vertically oriented flanges at each side of said path defining surface and extending from said path defining surface outwardly to provide belt edge guides. When driving the belt around the tracking shoe the velocity of the belt in the axial direction of the tracking shoe is zero when the belt touches an edge guide. Therefore, the friction force acting on the belt from the tracking shoe in the axial direction approaches zero, thereby helping to keep the total system force applied at the edge guide less than the minimum force necessary to produce buckling of the side of the belt. In a preferred embodiment the belt tracking shoe comprises a first substantially planar path defining surface, an arcuate path defining surface and a second substantially planar path defining surface wherein one of the planar surfaces provides a transfer planten and the arcuate surface provides a copy sheet stripping means in an electrostatographic printing apparatus.

REFERENCES:
patent: 4218125 (1980-08-01), Silverberg
patent: 4221480 (1980-09-01), Spehrley, Jr.
patent: 4367031 (1983-01-01), Hamaker
patent: 4397538 (1983-08-01), Castelli et al.
patent: 4421228 (1983-12-01), Marsiglio et al.
patent: 4429985 (1984-02-01), Yokota
patent: 4432632 (1984-02-01), Yokota
patent: 4527686 (1985-07-01), Satoh
patent: 4551001 (1985-11-01), Yokota

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