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US 5,232,499 AGranted
Fluid metering and coating device
AssigneeW. L. Gore & Associates, Inc.
InventorsHiroshi Kato, Hiroyasu Kikukawa
Life of this patent
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Abstract
A liquid metering and coating device made of a liquid permeation control layer adhered to a porous support in which the support is an open-celled foam internally reinforced to obtain the strength, resilience, and heat resistance needed for high durability in use as a part of a hot toner image fixation mechanism in a plain paper copying machine.
Claims4
A liquid metering and coating device comprising
- a) a porous permeation control material of porous polytetrafluoroethylene adhered to the outer surface of
- b) a porous tubular support comprising an open celled thermosetting polymer;
- c) a reinforcing material contiguous with said permeation control material and located in the outer portion of the pores of said porous tubular support, comprising a mixture of silicone oil and silicone rubber;
- d) an oil-supply material contiguous with the reinforcing material and substantially filling the pores radially closer to the center of said porous tubular support, comprising a mixture of silicone oil and silicone rubber;
- said oil-supply material having a silicone oil to silicone rubber ratio greater than the silicone oil to silicone rubber ratio of said reinforcing material;
- silicone oil from said oil-supply material penetrating into said reinforcing material and into said permeation control material.
3 more elements
Dependencies are inferred from the claim text.