US5860051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt-type fixing apparatus with pressure roller
Assignee: Canon Inc
•
Filing: 1996-05-21
•
Granted: 1999-01-12
•
Expires: 2016-05-21
Abstract
Abstract An image fixing apparatus has a heater; a film; and a roller forming a nip with the heater with the film therebetween, the roller being driving to drive the film. A recording material carrying an unfixed image is fed by the nip so that the unfixed image is fixed on the recording material by heat from the heater, and the roller has a surface resin tube layer, wherein the center line average surface roughness Ra ( mu m), a dynamic friction coefficient mu , and a peripheral speed of the roller V (mm/sec) satisfy: when Ra 0.3, mu >/=1.3x10-3V+0.18when Ra>/=0.30.37>/=Rax mu >/=6.4x10-4V+4.8x10-3.The roller's surface resin tube layer includes two different types of resin or resin and rubber materials. The roller's tube layer is subject to electric discharge treatment.
Inventors
- 👤 Masahiro Goto
- 👤 Toshio Miyamoto
- 👤 Satoru Izawa
- 👤 Masahiko Suzumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:52
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/206
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
100 words
An image fixing apparatus, comprising: a heater; a film; a roller forming a nip with said heater with said film therebetween, said roller being driven to drive said film, wherein a recording material carrying an unfixed image is fed by the nip so that the unfixed image is fixed on the recording material by heat from said heater; wherein said roller has a surface resin tube layer, and wherein a center line average surface roughness Ra (μm), a dynamic friction coefficient μ, and a peripheral speed V (mm/sec) of said roller satisfy: when Ra<0.3, μ≧1.3×10.sup.-3 V+0.18 when Ra≧0.3 0.37≧Ra×μ≧6.4×10.sup.-4 V+4.8×10.sup.-3.
Claim 2
Dependent Claim
100 words
An image fixing apparatus, comprising: a heater; a film; a roller forming a nip with said heater with said film therebetween, said roller being driven to drive said film, wherein a recording material carrying an unfixed image is fed by the nip so that the unfixed image is fixed on the recording material by heat from said heater; wherein said roller has a surface resin tube layer, and wherein a center line average surface roughness Ra (μm), a dynamic friction coefficient μ, and a peripheral speed V (mm/sec) of said roller satisfy: when Ra<0.3, μ≧1.3×10.sup.-3 V+0.18 when Ra≧0.3 0.37≧Ra×μ≧6.4×10.sup.-4 V+4.8×10.sup.-3.
Claim 3
Dependent Claim
14 words
An apparatus according to claim 1, wherein said resin tube is of fluorine resin.
Claim 4
Dependent Claim
13 words
An apparatus according to claim 2, wherein said resin tube is of PFA.
Claim 5
Dependent Claim
17 words
An apparatus according to claim 1, wherein said resin tube has a surface subjected to blast treatment.
Claim 6
Dependent Claim
20 words
An apparatus according to claim 2, wherein said resin tube further comprises a resin material different from the fluorine resin.
Claim 7
Dependent Claim
15 words
An apparatus according to claim 1, wherein said resin tube further comprises a rubber material.
Claim 8
Dependent Claim
18 words
An apparatus according to claim 1, wherein said resin tube has a surface subjected to electric discharge treatment.
Claim 9
Dependent Claim
30 words
An apparatus according to claim 7, wherein said resin tube has a surface subjected more to the electric discharge treatment at an end portion then in a central portion thereof.
Claim 10
Dependent Claim
18 words
An apparatus according to claim 1, wherein said roller has an elastic layer inside said resin tube layer.
Claim 11
Dependent Claim
13 words
An apparatus according to claim 9, wherein said elastic layer is of sponge.
Claim 12
Dependent Claim
13 words
An apparatus according to claim 9, wherein said elastic layer has a hole.
Claim 13
Dependent Claim
16 words
An apparatus according to claim 11, wherein said hole penetrates said roller in its longitudinal direction.
Claim 14
Dependent Claim
13 words
An apparatus according to claim 1, wherein said roller is a pressing roller.
Claim 15
Dependent Claim
32 words
An apparatus according to claim 11, further comprising a guiding member far guiding movement of said film, wherein said film is an endless film, and is extended loosely around said guiding member.
Claim 16
Dependent Claim
99 words
An image fixing apparatus, comprising: a roller cooperating with a member to form a nip for feeding a recording material carrying an unfixed image, wherein the unfixed image is fixed on the recording material while the recording material is fed through the nip; and driving means for driving said roller to feed the recording material; wherein said roller has a surface resin tube layer, and wherein a center line average surface roughness Ra (μm), a dynamic friction coefficient μ, and a peripheral speed V (mm/sec) of said roller satisfy: when Ra 0.3, μ≧1.3×10.sup.-3 V+0.18 when Ra≧0.3 0.37≧Ra×μ≧6.4×10.sup.-4 V+4.8×10.sup.-3. 16.
Claim 17
Dependent Claim
99 words
An image fixing apparatus, comprising: a roller cooperating with a member to form a nip for feeding a recording material carrying an unfixed image, wherein the unfixed image is fixed on the recording material while the recording material is fed through the nip; and driving means for driving said roller to feed the recording material; wherein said roller has a surface resin tube layer, and wherein a center line average surface roughness Ra (μm), a dynamic friction coefficient μ, and a peripheral speed V (mm/sec) of said roller satisfy: when Ra 0.3, μ≧1.3×10.sup.-3 V+0.18 when Ra≧0.3 0.37≧Ra×μ≧6.4×10.sup.-4 V+4.8×10.sup.-3. 16.
Claim 18
Dependent Claim
14 words
An apparatus according to claim 15, wherein said resin tube is of fluorine resin.
Claim 19
Dependent Claim
13 words
An apparatus according to claim 16, wherein said resin tube is of PFA.
Claim 20
Dependent Claim
17 words
An apparatus according to claim 15, wherein said resin tube has a surface subjected to blast treatment.
Claim 21
Dependent Claim
20 words
An apparatus according to claim 16, wherein said resin tube further comprises a resin material different from the fluorine resin.
Claim 22
Dependent Claim
15 words
An apparatus according to claim 15, wherein said resin tube further comprises a rubber material.
Claim 23
Dependent Claim
18 words
An apparatus according to claim 15, wherein said resin tube has a surface subjected to electric discharge treatment.
Claim 24
Dependent Claim
30 words
An apparatus according to claim 21, wherein said resin tube has a surface subjected more to the electric discharge treatment at an end portion then in a central portion thereof.
Claim 25
Dependent Claim
18 words
An apparatus according to claim 15, wherein said roller has an elastic layer inside said resin tube layer.
Claim 26
Dependent Claim
13 words
An apparatus according to claim 23, wherein said elastic layer is of sponge.
Claim 27
Dependent Claim
13 words
An apparatus according to claim 23, wherein said elastic layer has a hole.
Claim 28
Dependent Claim
16 words
An apparatus according to claim 25, wherein said hole penetrates said roller in its longitudinal direction.
Claim 29
Dependent Claim
12 words
An apparatus according to claim 15, wherein said member is a heater.
Claim 30
Dependent Claim
27 words
An apparatus according to claim 27, further comprising a film contactable with the unfixed image, and wherein said film is interposed between said heater and said roller.
Claim 31
Dependent Claim
13 words
An apparatus according to claim 15, wherein said roller is a pressing roller.
Claim 32
Dependent Claim
14 words
An apparatus according to claim 15, wherein said roller is free of heating source.
Claim 33
Dependent Claim
75 words
An image fixing apparatus, comprising: a film; a driving roller contactable to said film and for driving said film, wherein a recording material carrying an unfixed image is fed between said driving roller and said film to fix the unfixed image on the recording material; and wherein said driving roller has a surface resin tube layer of fluorine resin material, and said tube layer further comprises a resin material different from the fluorine resin material.
Claim 34
Dependent Claim
75 words
An image fixing apparatus, comprising: a film; a driving roller contactable to said film and for driving said film, wherein a recording material carrying an unfixed image is fed between said driving roller and said film to fix the unfixed image on the recording material; and wherein said driving roller has a surface resin tube layer of fluorine resin material, and said tube layer further comprises a resin material different from the fluorine resin material.
Claim 35
Dependent Claim
39 words
An apparatus according to claim 31, further comprising a heater cooperating with said driving roller to form a nip with said film interposed therebetween, wherein the resin material is heated at the nip by the heat from said heater.
Claim 36
Dependent Claim
68 words
An image fixing apparatus, comprising: a film; a driving roller contactable to said film and for driving said film, wherein a recording material carrying an unfixed image is fed between said driving roller and said film to fix the unfixed image on the recording material; and wherein said driving roller has a surface resin tube layer of resin material, and said tube layer further comprises a rubber material.
Claim 37
Dependent Claim
68 words
An image fixing apparatus, comprising: a film; a driving roller contactable to said film and for driving said film, wherein a recording material carrying an unfixed image is fed between said driving roller and said film to fix the unfixed image on the recording material; and wherein said driving roller has a surface resin tube layer of resin material, and said tube layer further comprises a rubber material.
Claim 38
Dependent Claim
14 words
An apparatus according to claim 33, wherein said resin tube is of fluorine resin.
Claim 39
Dependent Claim
39 words
An apparatus according to claim 33, further comprising a heater cooperating with said driving roller to form a nip with said film interposed therebetween, wherein the resin material is heated at the nip by the heat from said heater.
Claim 40
Dependent Claim
97 words
An image fixing apparatus, comprising: a film; and a driving roller contactable to said film and for driving said film, wherein a recording material carrying an unfixed image is fed between said driving roller and said film to fix the unfixed image on the recording material; wherein said driving roller has a surface tube layer of resin material, said tube layer having a surface subjected to electric discharge treatment, and wherein axially end portions of said driving roller are subjected to the electric discharger to a greater extent than an axially central portion of said driving roller.
Claim 41
Dependent Claim
97 words
An image fixing apparatus, comprising: a film; and a driving roller contactable to said film and for driving said film, wherein a recording material carrying an unfixed image is fed between said driving roller and said film to fix the unfixed image on the recording material; wherein said driving roller has a surface tube layer of resin material, said tube layer having a surface subjected to electric discharge treatment, and wherein axially end portions of said driving roller are subjected to the electric discharger to a greater extent than an axially central portion of said driving roller.
Claim 42
Dependent Claim
14 words
An apparatus according to claim 36, wherein said resin tube is of fluorine resin.
Claim 43
Dependent Claim
39 words
An apparatus according to claim 36, further comprising a heater cooperating with said driving roller to form a nip with said film interposed therebetween, wherein the recording material is heated at the nip by the heat from said heater.
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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) | 2002-01-11 | 2002-07-13 | 2003-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-11 | 2006-07-13 | 2007-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-11 | 2010-07-13 | 2011-01-12 | $7700.00 | Window Closed / Lapsed |