Drum assembly for electrostatic copier

Details Drum assembly for electrostatic copier Drum assembly for electrostatic copier

1977-03-25

1979-01-16

Braun, Fred L.

Photocopying

Including fiber optics

29123, G03G 1500, B21B 3108, G03G 2100

Patent

active

041346670

ABSTRACT:
A drum assembly for an electrostatic copier having a stationary frame comprises a cylindrically tubular drum whose outer surface carries a light-sensitive coating. A pair of rings are snugly engaged with the outer ends of the drum and are mounted via roller bearings on the frame for rotation about a common ring axis. A support sleeve is non-rotatably fixed to the frame between the rings and within the drum and has an outer surface which normally lies out of contact with the drum and only serves to support the drum as it is being fitted into the machine, so as to protect its delicate light-sensitive coating. One of the rings can be removed from the frame so as to allow axial withdrawal of the drum.

REFERENCES:
patent: 2165759 (1939-07-01), Nyborg
patent: 3490841 (1970-01-01), Cely et al.
patent: 3518739 (1970-07-01), Butler
patent: 3804512 (1974-04-01), Komori et al.
patent: 3994053 (1976-11-01), Hunt

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