US4490455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine acid salt charge enhancing toner additives
Assignee: Xerox Corp
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Filing: 1982-12-20
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Granted: 1984-12-25
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Expires: 2002-12-20
Abstract
Abstract This invention is generally directed to an electrostatic toner composition comprised of resin particles, pigment particles, and from about 0.25 weight percent to about 20 weight percent based on the weight of the toner particles of an amine acid salt charge enhancing additive composition of the following formula: ##STR1## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of alkyl groups, and aromatic groups, and A is an anion.
Inventors
- 👤 Thomas R. Hoffend
- 👤 Michelle M. Bruzee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:56
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G9/09741
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
30 words
A toner composition comprised of resin particles, and pigment particles, and from about 0.25 weight percent to about 20 weight percent of the charge enhancing additive stearyl dimethyl amine tosylate.
Claim 2
Dependent Claim
30 words
A toner composition comprised of resin particles, and pigment particles, and from about 0.25 weight percent to about 20 weight percent of the charge enhancing additive stearyl dimethyl amine tosylate.
Claim 3
Dependent Claim
30 words
A toner composition comprised of resin particles, and pigment particles, and from about 0.25 weight percent to about 20 weight percent of the charge enhancing additive octyl dimethyl amine tosylate.
Claim 4
Dependent Claim
30 words
A toner composition comprised of resin particles, and pigment particles, and from about 0.25 weight percent to about 20 weight percent of the charge enhancing additive octyl dimethyl amine tosylate.
Claim 5
Dependent Claim
30 words
A toner composition comprised of resin particles, and pigment particles, and from about 0.25 weight percent to about 20 weight percent of the charge enhancing additive lauryl dimethyl amine tosylate.
Claim 6
Dependent Claim
30 words
A toner composition comprised of resin particles, and pigment particles, and from about 0.25 weight percent to about 20 weight percent of the charge enhancing additive lauryl dimethyl amine tosylate.
Claim 7
Dependent Claim
19 words
A toner composition in accordance with claim 1 wherein the resin particles are comprised of a styrene butadiene copolymer.
Claim 8
Dependent Claim
19 words
A toner composition in accordance with claim 1 wherein the resin particles are polyesters, or a styrene methacrylate copolymer.
Claim 9
Dependent Claim
18 words
A toner composition in accordance with claim 5 wherein the styrene methacrylate copolymer is a styrene/n-butyl methacrylate copolymer.
Claim 10
Dependent Claim
19 words
A toner composition in accordance with claim 1 wherein the pigment particles are carbon black, magnetite, or mixtures thereof.
Claim 11
Dependent Claim
30 words
A toner composition in accordance with claim 7 wherein the carbon black particles are present in amount of from about 2 percent by weight to about 50 percent by weight.
Claim 12
Dependent Claim
29 words
A toner composition in accordance with claim 7 wherein the magnetite particles are present in amount of from about 10 percent by weight to about 70 percent by weight.
Claim 13
Dependent Claim
50 words
A developer composition comprised of resin particles, pigment particles, and carrier particles, and containing from about 0.25 weight percent to about 20 weight percent based on the weight of the toner particles of the charge enhancing additive stearyl dimethyl amine tosylate, octyl dimethyl amine tosylate, or lauryl dimethyl amine tosylate.
Claim 14
Dependent Claim
50 words
A developer composition comprised of resin particles, pigment particles, and carrier particles, and containing from about 0.25 weight percent to about 20 weight percent based on the weight of the toner particles of the charge enhancing additive stearyl dimethyl amine tosylate, octyl dimethyl amine tosylate, or lauryl dimethyl amine tosylate.
Claim 15
Dependent Claim
24 words
A developer composition in accordance with claim 10 wherein the resin particles are a styrene butadiene copolymer, a styrene n-butyl methacrylate copolymer, or polyesters.
Claim 16
Dependent Claim
22 words
A developer composition in accordance with claim 10 wherein the carrier particles contain a steel core coated with a polyvinylidene fluoride resin.
Claim 17
Dependent Claim
62 words
A method of imaging which comprises providing a negatively charged photoresponsive imaging member, followed by contacting this member with the developer composition of claim 10 and subsequently transferring the developed image to a suitable substrate, and optionally permanently affixing the image thereto, and wherein the charge enhancing additive is stearyl dimethyl amine tosylate, octyl dimethyl amine tosylate, or lauryl dimethyl amine tosylate.
Claim 18
Dependent Claim
24 words
A method of imaging in accordance with claim 1 wherein the resin particles are a styrene butadiene copolymer, polyesters, or a styrene n-butyl copolymer.
Claim 19
Dependent Claim
46 words
A developer composition in accordance with claim 10 wherein the carrier particles contain a coating selected from the group consisting of polystyrene, homopolymers, copolymers, or terpolymers of halogen containing ethylenes selected from the group consisting of vinyl fluorides, vinylidene fluorides, vinyl chlorides, vinylidene chlorides, and chlorotrifluoroethylene.
Claim 20
Dependent Claim
32 words
A developer composition in accordance with claim 15 wherein the carrier coating is a vinyl chloride/chlorotrifluoroethylene copolymer, a vinyl chloride/vinyl acetate copolymer, or a chlorotrifluoroethylene polymer, and the carrier core is steel.
Claim 21
Dependent Claim
31 words
A toner composition in accordance with claim 1 wherein the charge enhancing additive is present in an amount of from about 0.5 percent by weight to about 4.0 percent by weight.
Claim 22
Dependent Claim
31 words
A developer composition in accordance with claim 10 wherein the charge enhancing additive is present in an amount of from about 0.5 percent by weight to about 4.0 percent by weight.
Claim 23
Dependent Claim
20 words
A developer composition in accordance with claim 10 wherein the carrier particles contain a core coated with a fluoropolymer resin.
Claim 24
Dependent Claim
19 words
A developer composition in accordance with claim 10 wherein the pigment particles are carbon black, magnetite, or mixtures thereof.
Claim 25
Dependent Claim
31 words
A developer composition in accordance with claim 10 wherein the carbon black particles are present in an amount of from about 2 percent by weight to about 50 percent by weight.
Claim 26
Dependent Claim
30 words
A developer composition in accordance with claim 10 wherein the magnetite particles are present in an amount of from about 10 percent by weight to about 70 percent by weight.
Claim 27
Dependent Claim
28 words
A method of imaging in accordance with claim 13 wherein the image is permanently affixed to a substrate utilizing a fusing mechanism comprised of a soft roll fuser.
Claim 28
Dependent Claim
27 words
A method of imaging in accordance with claim 23 wherein the soft roll fuser is comprised of lead oxide coated with a vinylidene fluoride hexafluoropropylene copolymer resin.
References Cited (Backward Citations)
US4286037A
Cited
US4224396A
Cited
US4221856A
Cited
US4298672A
Cited
US4291112A
Cited
US4256824A
Cited
US4264702A
Cited
US4269922A
Cited
US4264697A
Cited
US4254205A
Cited
US4338390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |