US4910559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic rotatable member and fixing device using same
Assignee: Canon Inc
•
Filing: 1989-08-09
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Granted: 1990-03-20
•
Expires: 2009-08-09
Abstract
Abstract An elastic rotatable member for conveying a member to be conveyed includes an elastic layer, a resin layer formed on the elastic layer, wherein the resin layer has a portion wherein it has a thickness larger than the other portion to project outwardly. Also, an image fixing apparatus includes an elastic rotatable member including an elastic layer and a resin layer formed on the elastic layer, the resin layer having a portion projected outwardly, and a rotatable member cooperative with the elastic rotatable member to grip and convey a material carrying toner image to be fixed.
Inventors
- 👤 Tsukasa Kuge
- 👤 Masahiro Goto
- 👤 Isamu Sakane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:40
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; G03G2215/00; G03G2215/20; G03G2215/2003; G03G2215/2009; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
48 words
An elastic rotatable member for fixing an image, comprising: an elastic layer; and a fluorine or silicone resin surface layer formed on said elastic layer, said resin layer having a surface with an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member.
Claim 2
Dependent Claim
48 words
An elastic rotatable member for fixing an image, comprising: an elastic layer; and a fluorine or silicone resin surface layer formed on said elastic layer, said resin layer having a surface with an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member.
Claim 3
Dependent Claim
22 words
A member according to claim 1, wherein said elastic rotatable member is a heating roller having heating means inside said elastic layer.
Claim 4
Dependent Claim
23 words
A member according to claim 1, wherein said elastic layer is of silicone rubber, and wherein said resin layer is of fluorine resin.
Claim 5
Dependent Claim
45 words
A member according to claim 1, wherein said resin layer is formed by applying liquid resin on a vulcanized rubber layer which is said elastic layer and completely sintering it, wherein said resin layer has a film strength not less than 50 kg/cm 2 .
Claim 6
Dependent Claim
45 words
A member according to claim 1, wherein said elastic layer is of a vulcanized rubber layer, and said resin layer is formed by sintering a liquid containing resin applied by applying roller means on said rubber layer, and wherein said resin layer has a releasability.
Claim 7
Dependent Claim
80 words
An image fixing apparatus, comprising: an elastic rotatable member including an elastic layer and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member; and a second rotatable member in pressure contact with said elastic rotatable member to form a nip therebetween through which a material carrying a toner image may be passed to fix the toner image on the material.
Claim 8
Dependent Claim
80 words
An image fixing apparatus, comprising: an elastic rotatable member including an elastic layer and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member; and a second rotatable member in pressure contact with said elastic rotatable member to form a nip therebetween through which a material carrying a toner image may be passed to fix the toner image on the material.
Claim 9
Dependent Claim
18 words
An apparatus according to claim 6, wherein said elastic rotatable member contains heating means inside said elastic layer.
Claim 10
Dependent Claim
43 words
An apparatus according to claim 6, wherein said second rotatable member includes an elastic layer and a resin layer formed on said elastic layer and having an outwardly projecting portion which extends continuously along substantially the entire length of said second rotatable member.
Claim 11
Dependent Claim
27 words
An apparatus according to claim 8, wherein the projecting portions of said elastic rotatable member and said second rotatable member do not simultaneously pass through the nip.
Claim 12
Dependent Claim
64 words
An apparatus according to claim 6, wherein said elastic layer is of silicone rubber, and said resin layer is of fluorine resin, and wherein said resin layer is formed by applying liquid resin on a vulcanized rubber layer which is said elastic layer and completely sintering it, and wherein said resin layer has a film strength of not less than 50 kg/cm 2 .
Claim 13
Dependent Claim
45 words
An apparatus according to claim 6, wherein said elastic layer is of a vulcanized rubber layer, and the resin layer is formed by sintering a liquid containing resin applied by applying roller means on said rubber layer, and wherein said resin layer has a releasability.
Claim 14
Dependent Claim
65 words
An apparatus according to claim 11, wherein said resin layer is produced by sintering and then quickly cooling said resin, has a tensile strength not less than 50 kg/cm 2 , has a contact angle not less than 100 degrees with respect to water, and has a thickness of not less than 5 microns and not more than 35 microns except for the projected portion.
Claim 15
Dependent Claim
61 words
An elastic rotatable member for fixing a toner image, comprising: an elastic layer; and a resin surface layer formed on said elastic layer, said resin layer having a surface with an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member, wherein the amount of projection of said projecting portion is not more than 40 microns.
Claim 16
Dependent Claim
61 words
An elastic rotatable member for fixing a toner image, comprising: an elastic layer; and a resin surface layer formed on said elastic layer, said resin layer having a surface with an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member, wherein the amount of projection of said projecting portion is not more than 40 microns.
Claim 17
Dependent Claim
25 words
A member according to claim 13, wherein said member is contactable to an image to be fixed and is provided with a heating source therein.
Claim 18
Dependent Claim
21 words
A member according to claim 14, wherein the amount of projection of said projecting portion is not more than 25 microns.
Claim 19
Dependent Claim
21 words
A member according to claim 15, wherein the amount of projection of said projecting portion is not more than 20 microns.
Claim 20
Dependent Claim
24 words
A member according to claim 13, wherein a plurality of such projecting portions are formed, and the number thereof is not more than three.
Claim 21
Dependent Claim
14 words
A member according to claim 13, wherein only one such projecting portion is formed.
Claim 22
Dependent Claim
83 words
In an image fixing apparatus, the improvement comprising: an elastic rotatable member including an elastic layer and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member; and a second rotatable member in pressure contact with said elastic rotatable member to form a nip therebetween through which a material carrying a toner image may be passed to fix the toner image on the material.
Claim 23
Dependent Claim
83 words
In an image fixing apparatus, the improvement comprising: an elastic rotatable member including an elastic layer and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member; and a second rotatable member in pressure contact with said elastic rotatable member to form a nip therebetween through which a material carrying a toner image may be passed to fix the toner image on the material.
Claim 24
Dependent Claim
18 words
An apparatus according to claim 19, wherein said elastic rotatable member contains heating means inside said elastic layer.
Claim 25
Dependent Claim
21 words
An apparatus according to claim 19, wherein the amount of projection of said projecting portion is not more than 25 microns.
Claim 26
Dependent Claim
21 words
An apparatus according to claim 21, wherein the amount of projection of said projecting portion in not more than 20 microns.
Claim 27
Dependent Claim
43 words
An apparatus according to claim 29, wherein said second rotatable member includes an elastic layer and a resin layer formed on said elastic layer and having an outwardly projecting portion which extends continuously along substantially the entire length of said second rotatable member.
Claim 28
Dependent Claim
27 words
An apparatus according to claim 23, wherein said projecting portions of said elastic rotatable member and said second rotatable member do not simultaneously pass through the nip.
Claim 29
Dependent Claim
17 words
An apparatus according to claim 23, wherein a surface of said cooperative rotatable member is of resin.
Claim 30
Dependent Claim
26 words
An apparatus according to claim 23, wherein the amount of projection of said projecting portion of said second rotatable member is not more than 40 microns.
Claim 31
Dependent Claim
26 words
An apparatus according to claim 26, wherein the amount of projection of said projecting portion of said second rotatable member is not more than 25 microns.
Claim 32
Dependent Claim
26 words
An apparatus according to claim 27, wherein the amount of projection of said projecting portion of said second rotatable member is not more than 20 microns.
Claim 33
Dependent Claim
56 words
An elastic rotatable member for fixing an image, comprising: an elastic layer; and a resin surface layer formed on said elastic layer, said resin layer having a surface with an outwardly projecting portion, wherein said projecting portion extends continuously across said rotatable member in a direction substantially parallel to the rotational axis of said rotatable member.
Claim 34
Dependent Claim
56 words
An elastic rotatable member for fixing an image, comprising: an elastic layer; and a resin surface layer formed on said elastic layer, said resin layer having a surface with an outwardly projecting portion, wherein said projecting portion extends continuously across said rotatable member in a direction substantially parallel to the rotational axis of said rotatable member.
Claim 35
Dependent Claim
20 words
A member according to claim 29, wherein said projected portion extends over substantially the entire width of said rotatable member.
Claim 36
Dependent Claim
12 words
A member according to claim 29, wherein said projected portion extends linearly.
Claim 37
Dependent Claim
21 words
A member according to claim 29, wherein the amount of projection of said projecting portion is not more than 40 microns.
Claim 38
Dependent Claim
21 words
A member according to claim 32, wherein the amount of projection of said projecting portion is not more than 25 microns.
Claim 39
Dependent Claim
21 words
A member according to claim 33, wherein the amount of projection of said projecting portion is not more than 20 microns.
Claim 40
Dependent Claim
24 words
A member according to claim 29, wherein a plurality of such projecting portions are formed, and the number thereof is not more than three.
Claim 41
Dependent Claim
14 words
A member according to claim 29, wherein only one such projecting portion is formed.
Claim 42
Dependent Claim
94 words
In an image fixing apparatus, the improvement comprising: an elastic rotatable member including an elastic layer and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion, wherein said projecting portion extends continuously across said rotatable member in a direction substantially parallel to the rotational axis of said rotatable member; and a second rotatable member in pressure contact with said elastic rotatable member to form a nip therebetween through which a material carrying a toner image may be passed to fix the toner image on the material.
Claim 43
Dependent Claim
94 words
In an image fixing apparatus, the improvement comprising: an elastic rotatable member including an elastic layer and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion, wherein said projecting portion extends continuously across said rotatable member in a direction substantially parallel to the rotational axis of said rotatable member; and a second rotatable member in pressure contact with said elastic rotatable member to form a nip therebetween through which a material carrying a toner image may be passed to fix the toner image on the material.
Claim 44
Dependent Claim
18 words
An apparatus according to claim 37, wherein said elastic rotatable member contains heating means inside said elastic layer.
Claim 45
Dependent Claim
31 words
An apparatus according to claim 37, wherein said second rotatable member includes an elastic layer and a resin surface layer formed on said elastic layer and having an outwardly projecting portion.
Claim 46
Dependent Claim
36 words
An apparatus according to claim 39, wherein said projecting portions of said elastic rotatable member and said second member do not simultaneously pass through the nip formed between said elastic rotatable member and said second member.
Claim 47
Dependent Claim
17 words
An apparatus according to claim 40, wherein a surface of said cooperative rotatable member is of resin.
Claim 48
Dependent Claim
26 words
An apparatus according to claim 39, wherein the amount of projection of said projecting portion of said second rotatable member is not more than 40 microns.
Claim 49
Dependent Claim
26 words
An apparatus according to claim 39, wherein the amount of projection of said projecting portion of said second rotatable member is not more than 25 microns.
Claim 50
Dependent Claim
26 words
An apparatus according to claim 39, wherein the amount of projection of said projecting portion of said second rotatable member is not more than 20 microns.
Claim 51
Dependent Claim
62 words
An elastic rotatable member for conveying a material to be conveyed, comprising: an elastic layer; and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member; wherein said rotatable member has different diameters at its longitudinal end portions and at its center portion.
Claim 52
Dependent Claim
62 words
An elastic rotatable member for conveying a material to be conveyed, comprising: an elastic layer; and a resin surface layer formed on said elastic layer, said resin layer having an outwardly projecting portion which extends continuously along substantially the entire length of said rotatable member; wherein said rotatable member has different diameters at its longitudinal end portions and at its center portion.
Claim 53
Dependent Claim
25 words
A member according to claim 45, wherein said projecting portion extends continuously in a direction substantially parallel to the rotational axis of said rotatable member.
Claim 54
Dependent Claim
31 words
A member according to claim 46, wherein the amount of projection of said projecting portion is different at the longitudinal end portions of said rotatable member than at its center portion.
Claim 55
Dependent Claim
46 words
A member according to claim 47, wherein said rotatable member is reversely crowned so that the diameter in the middle is smaller than that at the ends, and wherein the amount of projection of said projecting portion is larger in the middle than at the ends.
Claim 56
Dependent Claim
16 words
A member according to claim 45, wherein said elastic rotatable member is for fixing an image.
Claim 57
Dependent Claim
22 words
A member according to claim 49, wherein said elastic rotatable member includes a heating source therein to fix the image by heat.
Claim 58
Dependent Claim
21 words
A member according to claim 49, wherein the amount of projection of said projecting portion is not more than 40 microns.
Claim 59
Dependent Claim
21 words
A member according to claim 51, wherein the amount of projection of said projecting portion is not more than 25 microns.
Claim 60
Dependent Claim
21 words
A member according to claim 52, wherein the amount of projection of said projecting portion is not more than 20 microns.
Claim 61
Dependent Claim
24 words
A member according to claim 49, wherein a plurality of such projecting portions are formed, and the number thereof is not more than three.
Claim 62
Dependent Claim
14 words
A member according to claim 49, wherein only one such projecting portion is formed.
Claim 63
Dependent Claim
26 words
A member according to claim 1, 13, 21, 29 or 45 wherein the amount of projection of said projecting portion is not less than 2 microns.
Claim 64
Dependent Claim
24 words
An apparatus according to claim 6, 19 or 37, wherein the amount of projection of said projecting portion is not less than 2 microns.
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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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |