B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/947
B29D 99/00 (2010.01) B29C 45/14 (2006.01) B29C 45/46 (2006.01) B29C 70/72 (2006.01) G03G 15/20 (2006.01)
Patent
CA 1268917
Abstract of the Disclosure This invention concerns particularly a rubber or plastic-coated roller such as a fixing roller to be used in the 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 rubber or plastic liquid 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.
515117
Asai Toshinobu
Kida Toshio
Kon Shuji
Murakami Takayoshi
Nunome Yoshiyuki
Macrae & Co.
Showa Electric Wire & Cable Co. Ltd.
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