Rubber or plastic-coated roller, method and apparatus for produc

Details Rubber or plastic-coated roller, method and apparatus for produc Rubber or plastic-coated roller, method and apparatus for produc

1986-08-01

1988-08-30

Bueker, Richard

Coating apparatus

Control means responsive to a randomly occurring sensed...

428 35, B05D 100

Patent

active

047668431

ABSTRACT:
This invention concerns particularly a rubber or plastic-coated roller such as a fixing roller to be used in a thermal fixing part of an electrophotographic copying machine, and a method and an apparatus for production thereof. It effects the production of the rubber or plastic-coated roller by placing a cylindrical mold upright, fitting into the lower part of the cylindrical mold a lower plug provided in the inside thereof with a tapered surface for guiding a core shaft and at the center thereof with a material injection hole, inserting into the cylindrical mold the core shaft having tapered surfaces one each the opposite ends thereof or the core shaft having tapered surface one each at the opposite ends thereof and covered with caps, fitting into the upper part of the cylindrical mold an upper plug provided in the inside thereof with a tapered surface for guiding the core shaft and at the center thereof with an air vent, injecting liquid rubber or plastic under pressure into the cylindrical mold via the material injection hold of the lower plug, and allowing the injected rubber or plastic to set. By this method, there is produced a coated roller the rubber or plastic layer of which is free from eccentricity, and requires no secondary fabrication such as polishing.

REFERENCES:
patent: 3437032 (1969-04-01), Manghirmalani et al.
patent: 3724983 (1973-04-01), Nelson
patent: 3830199 (1974-08-01), Saito et al.
patent: 3967020 (1976-06-01), Uemura et al.
patent: 3970495 (1976-07-01), Ashton et al.
patent: 4002715 (1977-01-01), Usui
patent: 4005234 (1977-01-01), Stroupe
patent: 4288058 (1981-09-01), Inman
patent: 4643925 (1987-02-01), Smith

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