Method for manufacturing a compliant roller for use in an electrographic apparatus
AssigneeEastman Kodak Company
InventorWalter Anthony Stryjewski
Life of this patent
Estimating the term…
Abstract
A compliant roller for use in a xerographic fusing apparatus is made by placing a rigid gudgeoned roller core in a mold assembly with a preshrunk outer sleeve positioned about the interior surface of the mold and by forcing an elastomeric siloxane, e.g., silicone rubber, between the core and the sleeve. The sleeve is comprised of a material which contains tetrafluoroethylene and/or hexafluoropropylene copolymers. The ends of the roller are sealed with an epoxy resin and a forming fixture to form an oil tight and airtight seal.
Claims10
A method for producing a compliant roller for use in an electrographic apparatus comprising the steps of:
- (a) disposing substantially the entire length of a shrinkable cylindrical sleeve about a cylindrical mandrel and shrinking said sleeve onto said mandrel, thereby forming a shrunken sleeve of uniform diameter;
- (b) removing said shrunken sleeve from the mandrel and placing the shrunken sleeve about an inner surface of a mold defining a mold cavity;
- (c) centering a rigid roller core in said mold cavity in spaced relation to the interior of said shrunken sleeve, said core having an outer diameter such that a cavity is provided between said core and said shrunken sleeve;
- (d) filling said cavity between said core and said shrunken sleeve with an elastomer material, thereby expanding said shrunken sleeve against said mold defining said cavity;
- and
- (e) hardening said elastomer material, thereby forming said roller.
A method for producing a compliant roller for use in an electrographic apparatus comprising the steps of:
- (a) placing a preshrunk sleeve about the inner surface of a mold assembly;
- (b) centering a rigid roller core in said mold assembly in spaced relation to the interior of said sleeve, said core having opposing ends and an outer diameter such that a cavity is provided between said core and said sleeve;
- and
- (c) filling said cavity between said core and said sleeve with an elastomer material;
- (d) applying a resinous adhesive around the inside of the ends of said rigid core;
- (e) heating the end portions of said sleeve;
- (f) using a forming fixture is tuck the end portions of said sleeve inside said core;
- and
- (g) inserting a friction ring inside the ends of said core to securely urge the end portions of said sleeve against the adhesive and said core.
Dependencies are inferred from the claim text.