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US 6,148,170 AGranted
Fuser roller having a thick wearable release layer
AssigneeIllbruck GmbH
InventorsMichael McMindes, James Montgomery
Life of this patent
Estimating the term…
Abstract
A fusing roller for use in image transfer devices, wherein toner is fixed by heat and pressure to a receiver by a pair of rollers. The fusing roller has a core, a base layer of conductive silicone rubber and a release layer consisting of a silicone rubber compound. The particular surface material offers excellent toner release and continuously renews its surface.
Claims30
A fusing roller, comprising:
- (a) a core;
- (b) a thermally conductive silicone rubber forming a uniformly thick base layer on the core;
- and
- (c) a release coating on the base layer, the release coating having
- (i) a specific gravity between 1.1 and 1.4,
- (ii) a tensile strength between 300 and 800 psi,
- (iii) a hardness of between 35 and 55 shore A.
4 more elements
A fusing roller, comprising:
- (a) a core;
- (b) a thermally conductive silicone rubber forming a uniformly thick base layer on the core;
- and
- (c) a release coating on the base layer the release coating having
- (i) a specific gravity between 1.1 and 1.4,
- (ii) a tensile strength between 300 and 800 psi,
- (iii) a hardness of between 35 and 60 shore A;
- (d) a barrier inserted between the base layer and the release layer to prevent surface oils from reaching the base layer.
5 more elements
A fusing roller comprising:
- (a) a core;
- (b) a cushion layer having a substantially uniform thickness disposed on the core;
- (c) a release layer on the cushion layer, the release layer having a thickness between approximately 0.7 and approximately 1.3 times the thickness of the cushion layer;
- (d) The release layer being sufficiently wearable to substantially preclude unintended retention of toner particles.
1 more element
A fusing roller, comprising:
- (a) a core;
- (b) an insulating layer of silicone rubber forming a uniformly thick base layer disposed on the core;
- (c) a conductive layer of silicone compound disposed of on the base layer of silicone
- (d) a surface layer of release material, where the release material is sufficiently wearable to substantially preclude unintended retention of toner particles.
1 more element
A fusing roller, comprising:
- (a) a core;
- (b) a cushioning layer on the core;
- and
- (c) a one component silicone adhesive sealant bonded to the cushioning layer.
1 more element
An apparatus to fix a toner image on an image carrier, comprising:
- (a) a fusing roller;
- and
- (b) a pressure roller, which presses the image carrier against the fusing roller;
- (c) the fusing roller including:
- (i) a core;
- (ii) a thermally conductive silicone rubber forming a uniformly thick base layer on the core;
- and
- (iii) a release coating on the base layer, the release coating having
- (A) a specific gravity between 1.1 and 1.4,
- (B) a tensile strength between 300 and 800 psi,
- (C) a hardness of between 35 and 55 shore A.
8 more elements
Dependencies are inferred from the claim text.