US6041210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic charge-suppressing fuser roller
Assignee: Eastman Kodak Co
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Filing: 1999-06-17
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Granted: 2000-03-21
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Expires: 2019-06-17
Abstract
Abstract A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver includes a core; and an overcoat layer formed over the core and defining the surface that contacts the receiver, such overcoat layer including electrically conductive powders having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.
Inventors
- 👤 Jiann H. Chen
- 👤 Robert A. Lancaster
- 👤 Andy H. Tsou
- 👤 Charles C. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:50
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
75 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core; and (b) an overcoat layer formed over the core and defining the surface that contacts the receiver, such overcoat layer including electrically conductive fine powder having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.
Claim 2
Dependent Claim
75 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core; and (b) an overcoat layer formed over the core and defining the surface that contacts the receiver, such overcoat layer including electrically conductive fine powder having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.
Claim 3
Dependent Claim
74 words
The toner fuser roller according to claim 1 wherein the electrically conductive fine powders are selected from the group consisting of TiO 2 , SnO 2 , Al 2 O 3 , ZrO 3 , In 2 O 3 , MgO, ZnSb 2 O 6 , InSbO 4 , TiB 2 , ZrB 2 , NbB 2 , TaB 2 , CrB 2 , MoB, WB, LaB 6 , ZrN, TiN, TiC, and WC.
Claim 4
Dependent Claim
24 words
The toner fuser roller of claim 1 wherein the weight percent of electrically conductive fine powder is between about 50 to 80 weight percent.
Claim 5
Dependent Claim
82 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core, (b) an overcoat layer formed over the core having a cured fluorocarbon random copolymer having the following subunits: ##STR4## wherein: x, y, and z are mole percentages and electrically conductive fine powders having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.
Claim 6
Dependent Claim
82 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core, (b) an overcoat layer formed over the core having a cured fluorocarbon random copolymer having the following subunits: ##STR4## wherein: x, y, and z are mole percentages and electrically conductive fine powders having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.
Claim 7
Dependent Claim
74 words
The toner fuser roller according to claim 4 wherein the electrically conductive fine powders are selected from the group consisting of TiO 2 , SnO 2 , Al 2 O 3 , ZrO 3 , In 2 O 3 , MgO, ZnSb 2 O 6 , InSbO 4 , TiB 2 , ZrB 2 , NbB 2 , TaB 2 , CrB 2 , MoB, WB, LaB 6 , ZrN, TiN, TiC, and WC.
Claim 8
Dependent Claim
91 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core, (b) a base cushion disposed over the core; (c) an overcoat layer formed over the base cushion having a cured fluorocarbon random copolymer having the following subunits: ##STR5## wherein: x, y, and z are mole percentages and electrically conductive fine powders having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.
Claim 9
Dependent Claim
91 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core, (b) a base cushion disposed over the core; (c) an overcoat layer formed over the base cushion having a cured fluorocarbon random copolymer having the following subunits: ##STR5## wherein: x, y, and z are mole percentages and electrically conductive fine powders having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.
Claim 10
Dependent Claim
74 words
The toner fuser roller according to claim 6 wherein the electrically conductive fine powders are selected from the group consisting of TiO 2 , SnO 2 , Al 2 O 3 , ZrO 3 , In 2 O 3 , MgO, ZnSb 2 O 6 , InSbO 4 , TiB 2 , ZrB 2 , NbB 2 , TaB 2 , CrB 2 , MoB, WB, LaB 6 , ZrN, TiN, TiC, and WC.
Claim 11
Dependent Claim
82 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core; (b) an overcoat layer formed over the core and defining the surface that contacts the receiver, such overcoat layer including electrically conductive fine powder having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity; and (c) means for grounding the overcoat layer.
Claim 12
Dependent Claim
82 words
A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core; (b) an overcoat layer formed over the core and defining the surface that contacts the receiver, such overcoat layer including electrically conductive fine powder having a weight percentage between about 30 to 80 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity; and (c) means for grounding the overcoat layer.
Claim 13
Dependent Claim
26 words
The toner fuser roller of claim 8 wherein the grounding means includes a grounded conductive flat spring in contact with the surface of the overcoat layer.
Claim 14
Dependent Claim
25 words
The toner fuser roller of claim 8 further including a base cushion formed over the core and the overcoat layer provided on the base cushion.
Claim 15
Dependent Claim
30 words
The toner ftiser roller of claim 8 wherein the grounding means includes a conductive flat spring in contact with the core and the base cushion includes electrically conductive fine powders.
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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) | 2003-03-21 | 2003-09-20 | 2004-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-21 | 2007-09-20 | 2008-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-21 | 2011-09-20 | 2012-03-21 | $7700.00 | Window Closed / Lapsed |