Patent US4299899A successfully refreshed from Google Patents.
US4299899A
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Toner additives
Assignee: Xerox Corp
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Filing: 1980-03-03
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Granted: 1981-11-10
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Expires: 2000-03-03
Abstract
Abstract Disclosed is the use of a novel diester as an additive to a toner, the ester being of the formula: ##STR1## wherein R is of the formula ##STR2## being independently selected from the group consisting of phenyl, substituted phenyl, aliphatic and substituted aliphatic. In one embodiment a toner containing this additive is used in a flash fusing system whereby it acts as a stabilizer thus eliminating decomposition of the toner. The additive can also be used to lower the toner melt viscosity and the fusing temperature of the toner.
Inventors
- 👤 Jack C. Azar
- 👤 Russel E. Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:34
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
48 words
A toner composition for use in flash fusing electrophotographic imaging systems comprised of a resin and an additive of a diester of the formula: ##STR6## wherein R is of the formula ##STR7## Y being independently selected from the group consisting of phenyl, substituted phenyl, aliphatic, and substituted aliphatic.
Claim 2
Dependent Claim
48 words
A toner composition for use in flash fusing electrophotographic imaging systems comprised of a resin and an additive of a diester of the formula: ##STR6## wherein R is of the formula ##STR7## Y being independently selected from the group consisting of phenyl, substituted phenyl, aliphatic, and substituted aliphatic.
Claim 3
Dependent Claim
12 words
A toner composition in accordance with claim 1 wherein Y is phenyl.
Claim 4
Dependent Claim
12 words
A toner composition in accordance with claim 1 wherein Y is methyl.
Claim 5
Dependent Claim
12 words
A toner composition in accordance with claim 1 wherein Y is isopropyl.
Claim 6
Dependent Claim
13 words
A toner in accordance with claim 1 wherein the resin is styrene n-butylmethacrylate.
Claim 7
Dependent Claim
14 words
A toner in accordance with claim 1 wherein the resin is a polyester material.
Claim 8
Dependent Claim
13 words
A toner in accordance with claim 1 wherein the resin is styrene isobutylmethacrylate.
Claim 9
Dependent Claim
26 words
A toner in accordance with claim 1 wherein the amount of additive present is between 3 percent and 10 percent based on the weight of toner.
Claim 10
Dependent Claim
16 words
A toner in accordance with claim 1 wherein a carrier material is added to the composition.
Claim 11
Dependent Claim
21 words
A toner in accordance with claim 9 wherein the carrier material is steel and is coated with a styrene methylmethacrylate copolymer.
Claim 12
Dependent Claim
26 words
A toner in accordance with claim 1 wherein the benzoate ester acts as a plasticizer whereby the melt viscosity of the toner resin is significantly reduced.
Claim 13
Dependent Claim
16 words
A toner in accordance with claim 1 wherein the dibenzoate ester prevents decomposition of the toner.
References Cited (Backward Citations)
US2331265A
Cited
US2359622A
Cited
US3577345A
Cited
GB1233869A
Cited
US3983045A
Cited
US4209550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |