US5153660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image fixing rotatable member and image fixing apparatus with same
Assignee: Canon Inc
•
Filing: 1991-06-12
•
Granted: 1992-10-06
•
Expires: 2011-06-12
Abstract
Abstract An image fixing rotatable member includes an elastic layer into which inorganic filler material is mixed; a bonding layer on the elastic layer, containing resin material; and a resin layer applied and sintered on the bonding layer. The elastic layer below the bonding layer has a heat conductivity higher than that of the resin material in the bonding layer and contains an inorganic filler having a heat conductivity higher than that of the resin material used in the bonding layer. Because of these specific features of the bonding layer and the elastic layer, the resin in the bonding layer functions as a thermal barrier during the sintering of the resin and therefore the heat transmitted to the rubber layer is not accumulated but is effectively dissipated as a result of the high conductivity of the inorganic filler.
Inventors
- 👤 Masahiro Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
90 words
An image fixing rotatable member, comprising: an elastic rubber layer; a bonding layer on the elastic layer; and a resin layer applied and sintered on the bonding layer, wherein said bonding layer contains resin material having a thermal conductivity of no greater than 0.6×10 -3 cal.cm/sec.cm 2 .° C., said elastic rubber layer contains inorganic filler having a heat-conductivity higher than that of the resin material in said bonding layer and said elastic rubber layer has a heat conductivity higher than that of the resin material in said bonding layer.
Claim 2
Dependent Claim
90 words
An image fixing rotatable member, comprising: an elastic rubber layer; a bonding layer on the elastic layer; and a resin layer applied and sintered on the bonding layer, wherein said bonding layer contains resin material having a thermal conductivity of no greater than 0.6×10 -3 cal.cm/sec.cm 2 .° C., said elastic rubber layer contains inorganic filler having a heat-conductivity higher than that of the resin material in said bonding layer and said elastic rubber layer has a heat conductivity higher than that of the resin material in said bonding layer.
Claim 3
Dependent Claim
19 words
A member according to claim 1, wherein the filler material is exposed at a surface of the elastic layer.
Claim 4
Dependent Claim
30 words
A member according to claim 1, wherein said elastic layer is of silicone rubber, and the resin material of said bonding layer and said resin layer are of fluorine resin.
Claim 5
Dependent Claim
15 words
A member according to claim 1, further comprising a metal core as a base layer.
Claim 6
Dependent Claim
12 words
A member according to claim 1, further comprising an inside heating source.
Claim 7
Dependent Claim
16 words
A member according to claim 1, wherein the inorganic filler is of metal oxide or quartz.
Claim 8
Dependent Claim
113 words
A image fixing apparatus, comprising: a couple of rotatable members for fixing an unfixed image, at least one of said rotatable members including: an elastic rubber layer into which inorganic filler material is added; a bonding layer on said elastic layer; and a resin layer applied and sintered on said bonding layer, wherein said bonding layer contains resin material having a thermal conductivity no greater than 0.6×10 -3 cal.cm/sec.cm 2 .° C., said elastic rubber layer contains inorganic filler having a heat-conductivity higher than that of the resin material in said bonding layer and said elastic rubber layer has a heat conductivity higher than that of the resin material in said bonding layer.
Claim 9
Dependent Claim
113 words
A image fixing apparatus, comprising: a couple of rotatable members for fixing an unfixed image, at least one of said rotatable members including: an elastic rubber layer into which inorganic filler material is added; a bonding layer on said elastic layer; and a resin layer applied and sintered on said bonding layer, wherein said bonding layer contains resin material having a thermal conductivity no greater than 0.6×10 -3 cal.cm/sec.cm 2 .° C., said elastic rubber layer contains inorganic filler having a heat-conductivity higher than that of the resin material in said bonding layer and said elastic rubber layer has a heat conductivity higher than that of the resin material in said bonding layer.
Claim 10
Dependent Claim
31 words
An apparatus according to claim 7, wherein said at least one of the rotatable members is adapted to be contacted to an unfixed image and is heated by a heating source.
Claim 11
Dependent Claim
19 words
An apparatus according to claim 7, wherein the filler material is exposed at a surface of the elastic layer.
Claim 12
Dependent Claim
30 words
An apparatus according to claim 7, wherein said elastic layer is of silicone rubber, and the resin material of said bonding layer and said resin layer are of fluorine resin.
Claim 13
Dependent Claim
15 words
An apparatus according to claim 7, further comprising a metal core as a base layer.
Claim 14
Dependent Claim
12 words
An apparatus according to claim 7, further comprising an inside heating source.
Claim 15
Dependent Claim
17 words
An apparatus according to claim 7, wherein the inorganic filler material is of metal oxide or quartz.
Claim 16
Dependent Claim
36 words
An apparatus according to claim 7, wherein said elastic rubber layer has a thickness of 0.3-0.8 mm; said bonding layer has a thickness of 1-7 microns; and said resin layer has a thickness of 10-25 microns.
References Cited (Backward Citations)
US4078286A
Cited
US4198739A
Cited
JPS5339134A
Cited
US4470688A
Cited
US4522866A
Cited
US4842944A
Cited
US4883715A
Cited
US4804576A
Cited
JPS6286383A
Cited
JPS62153984A
Cited
US5011401A
Cited
US4810564A
Cited
US4763158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |