Patent US4264702A successfully refreshed from Google Patents.
US4264702A
Expired / Lapsed
US
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Positive toners containing alkyl morpholinium compounds as charge control agents
Assignee: Xerox Corp
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Filing: 1979-03-12
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Granted: 1981-04-28
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Expires: 1999-03-12
Abstract
Abstract Toner compositions comprised of a toner resin, a colorant, or pigment and an alkyl morpholinium compound of the following formula: <IMAGE> wherein R1 is a hydrocarbon radical containing from about 8 to about 22 carbon atoms, R2 is hydrogen or a hydrocarbon radical containing from 1 to about 20 carbon atoms and A is an anion which in a preferred embodiment is selected from halides such as chloride, bromide, or iodide, sulphate, sulphonate, phosphate or nitrate.
Inventors
- 👤 Chin H. Lu
- 👤 Peter F. Erhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:14
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G9/09758; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/105; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
47 words
A developer composition comprised of 92 percent by weight of a styrene/n-butyl methacrylate resin, 6 percent by weight of carbon black, 2 percent by weight of N-lauryl N-methyl morpholinium bromide, and a carrier material consisting of a steel core which is coated with a polyvinylidene fluoride resin.
Claim 2
Dependent Claim
47 words
A developer composition comprised of 92 percent by weight of a styrene/n-butyl methacrylate resin, 6 percent by weight of carbon black, 2 percent by weight of N-lauryl N-methyl morpholinium bromide, and a carrier material consisting of a steel core which is coated with a polyvinylidene fluoride resin.
Claim 3
Dependent Claim
29 words
A developer composition in accordance with claim 1 wherein the styrene/n-butyl methacrylate copolymer resin contains 65 percent by weight of styrene and 35 percent by weight of n-butyl methacrylate.
Claim 4
Dependent Claim
47 words
A developer composition comprised of 88 percent by weight of a styrene/n-butyl methacrylate resin, 10 percent by weight of carbon black, 2 percent by weight of N-lauryl N-methyl morpholinium chloride, and a carrier material consisting of a steel core which is coated with a polyvinylidene fluoride resin.
Claim 5
Dependent Claim
47 words
A developer composition comprised of 88 percent by weight of a styrene/n-butyl methacrylate resin, 10 percent by weight of carbon black, 2 percent by weight of N-lauryl N-methyl morpholinium chloride, and a carrier material consisting of a steel core which is coated with a polyvinylidene fluoride resin.
Claim 6
Dependent Claim
48 words
A developer composition comprised of 89 percent by weight of a styrene butadiene copolymer resin, 8 percent by weight of carbon black, 3 percent by weight of N-lauryl N-methyl morpholinium chloride, and a carrier material consisting of a steel core which is coated with a polyvinylidene fluoride resin.
Claim 7
Dependent Claim
48 words
A developer composition comprised of 89 percent by weight of a styrene butadiene copolymer resin, 8 percent by weight of carbon black, 3 percent by weight of N-lauryl N-methyl morpholinium chloride, and a carrier material consisting of a steel core which is coated with a polyvinylidene fluoride resin.
Claim 8
Dependent Claim
28 words
A developer composition in accordance with claim 4 wherein the styrene butadiene copolymer resin contains 60 percent by weight of styrene and 40 percent by weight of butadiene.
References Cited (Backward Citations)
US2892794A
Cited
US3844966A
Cited
US3893935A
Cited
US3985664A
Cited
US3944493A
Cited
US3970571A
Cited
US4079014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |