US5403656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary member for fixing
Assignee: Canon Inc
•
Filing: 1992-06-15
•
Granted: 1995-04-04
•
Expires: 2012-06-15
Abstract
Abstract This invention relates to a rotary member for fixing having an elastic layer; an off-set preventive layer as the rotary member surface layer; and an intermediate layer having silicone varnish provided between the elastic layer and the off-set preventive layer.
Inventors
- 👤 Tatsuo Takeuchi
- 👤 Masaaki Sakurai
- 👤 Takeshi Menjyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:27
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
82 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic layer and the surface layer, wherein said elastic layer includes a HTV silicone rubber and said surface layer includes a RTV silicone rubber.
Claim 2
Dependent Claim
82 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic layer and the surface layer, wherein said elastic layer includes a HTV silicone rubber and said surface layer includes a RTV silicone rubber.
Claim 3
Dependent Claim
21 words
A rotary member for fixing according to claim 1, wherein said intermediate layer has a thickness of 5 to 300 μm.
Claim 4
Dependent Claim
21 words
A rotary member for fixing according to claim 2, wherein said intermediate layer has a thickness of 10 to 200 μm.
Claim 5
Dependent Claim
21 words
A rotary member for fixing according to claim 1, wherein said surface layer has a thickness of 0.01 to 0.5 μm.
Claim 6
Dependent Claim
45 words
A rotary member for fixing according to claim 1, wherein the content of said silicone composition having a three dimensional structure is less than 90 vol. % in total of a silicone composition having linear structure and a silicone composition having a three dimensional structure.
Claim 7
Dependent Claim
74 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic and the surface layer, wherein said elastic layer is a methyl phenyl HTV silicone rubber.
Claim 8
Dependent Claim
74 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic and the surface layer, wherein said elastic layer is a methyl phenyl HTV silicone rubber.
Claim 9
Dependent Claim
84 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic and the surface layer, wherein said silicone varnish composition is a mixture of silane compound having methyl group and a silane compound having phenyl group.
Claim 10
Dependent Claim
84 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic and the surface layer, wherein said silicone varnish composition is a mixture of silane compound having methyl group and a silane compound having phenyl group.
Claim 11
Dependent Claim
21 words
A rotary member for fixing according to claim 7, wherein the ratio of said methyl group/phenyl group is 5 to 99.
Claim 12
Dependent Claim
21 words
A rotary member for fixing according to claim 8, wherein the ratio of said methyl group/phenyl group is 20 or less.
Claim 13
Dependent Claim
45 words
A rotary member for fixing according to claim 7, wherein the content of said silicone composition having a three dimensional structure is less than 75 vol. % in total of a silicone composition having linear structure and a silicone composition having a three dimensional structure.
Claim 14
Dependent Claim
87 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic and the surface layer, wherein said silicone composition having a three dimensional structure added to a silicone composition having a linear structure which is linear methyl phenyl polysiloxane.
Claim 15
Dependent Claim
87 words
A rotary member for fixing comprising: an elastic layer; a surface layer forming an outer layer of said rotary member; and an intermediate layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and silicone composition having a three dimensional structure, said intermediate layer provided between the elastic and the surface layer, wherein said silicone composition having a three dimensional structure added to a silicone composition having a linear structure which is linear methyl phenyl polysiloxane.
Claim 16
Dependent Claim
71 words
A rotary member for fixing comprising: a silicone rubber layer; and a surface layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and a silicone composition having a three dimensional structure, said surface layer disposed on said silicone rubber layer, wherein said silicone composition having three dimensional structure has a ratio of methyl groups/phenyl groups of 8 to 1000.
Claim 17
Dependent Claim
71 words
A rotary member for fixing comprising: a silicone rubber layer; and a surface layer made of block co-polymer having a non-linear structure, wherein said block co-polymer comprises a silicone composition having a linear structure and a silicone composition having a three dimensional structure, said surface layer disposed on said silicone rubber layer, wherein said silicone composition having three dimensional structure has a ratio of methyl groups/phenyl groups of 8 to 1000.
Claim 18
Dependent Claim
21 words
A rotary member for fixing according to claim 12, wherein said silicone composition having a linear structure is a siloxane polymer.
Claim 19
Dependent Claim
20 words
A rotary member for fixing according to claim 13, wherein said siloxane polymer is dimethyl polysiloxane or methyl phenyl polysiloxane.
Claim 20
Dependent Claim
22 words
A rotary member for fixing according to claim 12, wherein said silicone composition having a three dimensional structure is a polysiloxane compound.
Claim 21
Dependent Claim
29 words
A rotary member for fixing according to claim 12, wherein said silicone rubber layer is methyl vinyl silicone rubber or methyl phenyl silicone rubber or a mixture of these.
Claim 22
Dependent Claim
46 words
A rotary member for fixing according to claim 12, wherein R/Si of said silicone composition having a three dimensional structure is at least 1 and less than 2, with R being a number of methyl groups or phenyl groups and Si being number of silicone atoms.
Claim 23
Dependent Claim
19 words
A rotary member for fixing according to claim 17, wherein R/Si is 1 or more and 1.7 or less.
Claim 24
Dependent Claim
22 words
A rotary member for fixing according to claim 12, wherein the ratio of said methyl groups/phenyl groups is between 50 and 200.
Claim 25
Dependent Claim
21 words
A rotary member for fixing according to claim 12 wherein the surface layer has a thickness of 5 to 300 μm.
Claim 26
Dependent Claim
21 words
A rotary member for fixing according to claim 20 wherein said surface layer has a thickness of 10 to 70 μm.
Claim 27
Dependent Claim
59 words
A rotary member for fixing comprising: a silicone rubber layer; and a surface layer made of block co-polymer having a non-linear structure, the block co-polymer comprising a silicone composition having a linear structure and a silicone composition having a three dimensional structure, said surface layer being disposed on said silicone rubber layer, wherein said block co-polymer has phenyl group.
Claim 28
Dependent Claim
59 words
A rotary member for fixing comprising: a silicone rubber layer; and a surface layer made of block co-polymer having a non-linear structure, the block co-polymer comprising a silicone composition having a linear structure and a silicone composition having a three dimensional structure, said surface layer being disposed on said silicone rubber layer, wherein said block co-polymer has phenyl group.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |