US4883715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic rotatable member
Assignee: Ist KK
•
Filing: 1988-01-13
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Granted: 1989-11-28
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Expires: 2008-01-13
Abstract
Abstract An elastic rotatable member usable for image fixing includes an elastic layer having a roughened surface, a resin layer formed by applying a liquid resin on the surface of the elastic layer and heating it up to a temperature not lower than its crystalline melting point and then quickly cooling it, wherein the resin layer has a side near the elastic layer, having a number of fine concave and convex portions, and wherein the convex portions are in concave portions of the surface of the elastic layer, and the concave portions of the resin layer is pressed by the convex portions of the elastic layer.
Inventors
- 👤 Tsukasa Kuge
- 👤 Masahiro Goto
- 👤 Isamu Sakane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:23
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; B; B65; B65H; B65H27/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; B65H2404/00; B65H2404/10; B65H2404/18; B65H2404/181; B65H2404/185; B65H2404/50; B65H2404/52; B65H2404/521; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00371; G03G2215/00535; G03G2215/00679; G03G2215/00683; Y; Y10; Y10S; Y10S428/00; Y10S428/909; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31909
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
50 words
A roller for fixing an image, comprising: a core member; an elastic rubber layer on said core member; at least two fluorine resin layers on said elastic layer, said resin layers being provided by sintering unsintered fluorine resin, the outside one of said resin layers being free of filler material.
Claim 2
Dependent Claim
50 words
A roller for fixing an image, comprising: a core member; an elastic rubber layer on said core member; at least two fluorine resin layers on said elastic layer, said resin layers being provided by sintering unsintered fluorine resin, the outside one of said resin layers being free of filler material.
Claim 3
Dependent Claim
25 words
A roller according to claim 5, wherein said fluorine resin layers are provided by heat-sintering flourine resin at a temperature above its crystalline melting point.
Claim 4
Dependent Claim
44 words
A roller according to claim 2, wherein said resin layer is of a tetrafluoroethylene resin or perfluoroalkoxyethylene resin, and wherein said elastic layer is of a silicone rubber, the silicone rubber layer is maintained lower than 300° C. upon sintering of the resin layers.
Claim 5
Dependent Claim
37 words
A roller according to claim 1, wherein the inside one of said resin layers contains a small amount of filler which includes at least one material of the group consisting of glass, carbon black and metal oxide.
Claim 6
Dependent Claim
83 words
An image fixing apparatus, comprising: a first rotatable member containing therein a heat source and adapted to contact an unfixed image to be fixed; a second rotatable member associated with said first rotatable member to fix the unfixed image; said first rotatable member, comprising: a core member; an elastic rubber layer on said core member; at least two fluorine resin layers provided on said elastic layer by sintering unsintered fluorine resin, an outside one of said resin layers being free of filler material.
Claim 7
Dependent Claim
83 words
An image fixing apparatus, comprising: a first rotatable member containing therein a heat source and adapted to contact an unfixed image to be fixed; a second rotatable member associated with said first rotatable member to fix the unfixed image; said first rotatable member, comprising: a core member; an elastic rubber layer on said core member; at least two fluorine resin layers provided on said elastic layer by sintering unsintered fluorine resin, an outside one of said resin layers being free of filler material.
Claim 8
Dependent Claim
25 words
An apparatus according to claim 5, wherein said fluorine resin layers are provided by heat-sintering fluorine resin at a temperature above its crystalline melting point.
Claim 9
Dependent Claim
44 words
An apparatus according to claim 6, wherein said resin layer is of a tetrafluoroethylene resin or perfluoroalkoxyethylene resin, and wherein said elastic layer is of a silicone rubber, the silicone rubber layer is maintained lower than 300° C. upon sintering of the resin layers.
Claim 10
Dependent Claim
37 words
An apparatus according to claim 5, wherein the inside one of said resin layers contains a small amount of filler which includes at least one material of the group consisting of glass, carbon black and metal oxide.
Claim 11
Dependent Claim
23 words
An apparatus according to claim 5, further comprising cleaning means, contacted to a surface of the outermost resin layer for cleaning the surface.
Claim 12
Dependent Claim
48 words
An apparatus according to claim 5, further comprising detecting means for detecting a temperature of said first rotatable member and control means for controlling the heat source in accordance with the detection by said detecting means, and wherein said detecting means detects a temperature of said resin layers.
Claim 13
Dependent Claim
17 words
An apparatus according to claim 5, wherein the surface of said second rotatable member is of resin.
Claim 14
Dependent Claim
20 words
An apparatus according to claim 11, wherein the surface of said first and second rotatable member are of fluorine resin.
Claim 15
Dependent Claim
30 words
An apparatus according to claim 12, wherein the surface of said first rotatable member is of tetrafluoroethylene resin and the surface of said second rotatable member is of perfluoroalkoxyethylene resin.
Claim 16
Dependent Claim
23 words
An apparatus according to claim 11, wherein a resin layer thickness of said first rotatable member is larger than said second rotatable member.
Claim 17
Dependent Claim
37 words
An apparatus according to claim 11, wherein said second rotatable member includes an elastic layer under said resin layers, the elastic layer having a thickness larger than that of said elastic layer of said first rotatable member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |