US4970559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic polymer material having antistatic property, elastic revolution body and fixing device using the same
Assignee: Canon Inc
•
Filing: 1988-11-09
•
Granted: 1990-11-13
•
Expires: 2008-11-09
Abstract
Abstract There are provided an organic polymer composition having an antistatic property, and a molding product and a fixing device using the same. The organic polymer composition comprises at least an organic polymer and porous inorganic fine powder carrying a liquid antistatic agent dispersed in the organic polymer; the porous inorganic fine powder having an oil absorption of 100 ml/100 g or larger before it carries the liquid antistatic agent.
Inventors
- 👤 Toshiyuki Miyabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:45
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; C; C08; C08K; C08K9/00; C08K9/12; G03G15/206; G03G2215/00; G03G2215/20; G03G2215/2003; G03G2215/2048; G03G2215/2051; G03G2215/2054; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386; Y10T428/139; Y10T428/25; Y10T428/259; Y10T428/26; Y10T428/269; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
112 words
A fixing device, comprising at least a pair of rollers between which a toner image-supporting material carrying an unfixed toner image is passed under heating and pressure to fix the toner image to the toner image supporting material; wherein at least one of said pair of rollers comprises an elastic roller including an elastic layer which is obtained by thermally molding a mixture comprising at least an organic polymer and porous inorganic fine powder carrying a liquid antistatic agent; said porous inorganic fine powder being dispersed in the organic polymer; said porous inorganic fine powder having an oil absorption of 100 ml/100 g or larger before it carries the liquid antistatic agent.
Claim 2
Dependent Claim
112 words
A fixing device, comprising at least a pair of rollers between which a toner image-supporting material carrying an unfixed toner image is passed under heating and pressure to fix the toner image to the toner image supporting material; wherein at least one of said pair of rollers comprises an elastic roller including an elastic layer which is obtained by thermally molding a mixture comprising at least an organic polymer and porous inorganic fine powder carrying a liquid antistatic agent; said porous inorganic fine powder being dispersed in the organic polymer; said porous inorganic fine powder having an oil absorption of 100 ml/100 g or larger before it carries the liquid antistatic agent.
Claim 3
Dependent Claim
15 words
A fixing device according to claim 1, wherein the organic polymer comprises a silicone rubber.
Claim 4
Dependent Claim
17 words
A fixing device according to claim 2, wherein the organic polymer comprises an addition reaction-type silicone rubber.
Claim 5
Dependent Claim
15 words
A fixing device according to claim 1, wherein the organic polymer comprises ar unvulcanized rubber.
Claim 6
Dependent Claim
16 words
A fixing device according to claim 1, wherein the organic polymer comprises an unvulcanized silicone rubber.
Claim 7
Dependent Claim
14 words
A fixing device according to claim 1, wherein the antistatic agent comprises a surfactant.
Claim 8
Dependent Claim
15 words
A fixing device according to claim 6, wherein the antistatic agent comprises a fluorinecontaining surfactant.
Claim 9
Dependent Claim
47 words
A fixing device according to claim 7, wherein the antistatic agent comprises a fluorinecontaining surfactant selected from the group consisting of perfluoroalkylcarboxylic acid ester, perfluoroalkylsulfonic acid amide-type compound, perfluoroalkylpolyoxyethyleneethanol, perfluoroalkylcarboxylic acid salt, perfluoroalkylammr,nium salt, perfluoroalkylbetaine, perfluoroalkylamine oxide, perfluoroalkylethylene oxide adduct, perfluoroalkylphosphoric acid ester, and non-dissociative perfluoroalkyl compound.
Claim 10
Dependent Claim
16 words
A fixing device according to claim 1, wherein the antistatic agent comprises a polyethermodified silicone oil.
Claim 11
Dependent Claim
62 words
A fixing device according to claim 9, wherein the antistatic agent comprises a polyether-modified silicone oil represented by the following formula: ##STR12## wherein R denotes hydrogen atom or an alkyl group; m denotes zero or a positive integer; n denotes a positive integer; and a and b respectively denote zero or a positive integer while a and b are not simultaneously zero.
Claim 12
Dependent Claim
16 words
A fixing device according to claim 1, wherein the antistatic agent comprises an amino-modified silicone oil.
Claim 13
Dependent Claim
45 words
A fixing device according to claim 11, wherein the antistatic agent comprises an amino-modified silicone oil represented by the following formula: ##STR13## wherein R denotes --CH 3 or --OCH 3 , and m denotes zero or a positive integer, and n denotes a positive integer.
Claim 14
Dependent Claim
45 words
A fixing device according to claim 11, wherein the antistatic agent comprises an amino-modified silicone oil, represented by the following formula: ##STR14## wherein R denotes -CH 3 or -OCH 3 , and m denotes zero or a positive integer, and n denotes a positive integer.
Claim 15
Dependent Claim
21 words
A fixing device according to claim 1, wherein the porous inorganic fine powder has an oil absorption of 200-800 ml/100 g.
Claim 16
Dependent Claim
21 words
A fixing device according to claim 14, wherein the porous inorganic fine powder has an oil absorption of 300-600 ml/100 g.
Claim 17
Dependent Claim
21 words
A fixing device according to claim 1, wherein the porous inorganic fine powder has an average particle size of 1-70 microns.
Claim 18
Dependent Claim
21 words
A fixing device according to claim 16, wherein the porous inorganic fine powder has an average particle size of 1-40 microns.
Claim 19
Dependent Claim
26 words
A fixing device according to claim 1, wherein the porous inorganic fine powder comprises gyrolite-type calcium silicate powder having an oil absorption of 200-800 ml/100 g.
Claim 20
Dependent Claim
27 words
A fixing device according to claim 1, wherein the porous inorganic fine powder comprises spherical porous silica fine powder having an oil absorption of 200-800 ml/100 g.
Claim 21
Dependent Claim
24 words
A fixing device according to claim 1, wherein the porous inorganic fine powder comprises Shirasu-ballon powder having an oil absorption of 200-800 ml/100 g.
Claim 22
Dependent Claim
49 words
A fixing device according to claim 1, wherein the antistatic agent is carried on the porous inorganic fine powder in an amount of not less than 50 ml and less than the oil absorption of the porous inorganic fine powder, per 100 g of the porous inorganic fine powder.
Claim 23
Dependent Claim
50 words
A fixing device according to claim 1, wherein the antistatic agent is carried on the porous inorganic fine powder in an amount of 2/5×V to 4.9/5×V (ml) wherein V denotes the oil absorption of the porous inorganic fine powder (ml/100 g), per 100 g of the porous inorganic fine powder.
Claim 24
Dependent Claim
68 words
A fixing device according to claim 1, which comprises an unvulcanized silicone rubber; a fluorinecontaining polysiloxane having in its side chain a polyfluoroalkyl group, and a functional group having a reactivity to the unvulcanized silicone rubber; and porous inorganic fine powder carrying a liquid antistatic agent; said porous inorganic fine powder having an oil absorption of 100 ml/100 g or larger before it carries the liquid antistatic agent.
Claim 25
Dependent Claim
72 words
A fixing device according to claim 23, wherein the fluorine-containing polysiloxane is represented by the following formula: ##STR15## wherein Z 1 and Z 2 respectively denote a functional group capable of reacting with the unvulcanized silicone rubber, R denotes a substituted or unsubstituted alkyl, alkenyl or aryl group, W denotes a polyfluoroalkyl group, a denotes an integer of 0-200, b denotes an integer of 1-100, and c denotes an integer of 0-50.
Claim 26
Dependent Claim
108 words
A fixing device according to claim 24, wherein Z 1 and Z 2 respectively denote --CH═CH 2 , --OH or --(CH 2 ) 4 --OH, W denotes --CH 2 ) d R f , --O(CH 2 ) d R f , --O(OC 3 F 6 )R f , --CF 2 (OC 3 F 6 )OC 3 F 7 , or --OCF 2 (OC 2 F 4 ) e (OCF 2 ) f OC 3 F 7 , wherein d and f respectively denote an integer of 1-20, e denotes an integer of 1-10, and R f denotes a straight or branched chain polyfluoroalkyl group having 3-21 carbon atoms.
References Cited (Backward Citations)
US4360610A
Cited
US4529752A
Cited
US4596920A
Cited
US4758611A
Cited
US4653897A
Cited
US4632855A
Cited
US4727394A
Cited
US4810564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |