US5215846A
Expired / Lapsed
US
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Toner and developer compositions with coupled liquid glass resins
Assignee: Xerox Corp
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Filing: 1992-02-28
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Granted: 1993-06-01
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Expires: 2012-02-28
Abstract
Abstract A toner composition comprised of chemically coupled multiblock or liquid glass resin particles with a glass transition temperature of between from about 20° C. to about 65° C., and pigment particles.
Inventors
- 👤 Timothy J. Fuller
- 👤 William M. Prest, Jr.
- 👤 Ralph A. Mosher
- 👤 Anita C. VanLaeken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:10
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08784; G03G9/08791; G03G9/08788
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
30 words
A toner composition comprised of chemically coupled multiblock liquid glass resin particles with a glass transition temperature of between from about 20° C. to about 65° C., and pigment particles.
Claim 2
Dependent Claim
30 words
A toner composition comprised of chemically coupled multiblock liquid glass resin particles with a glass transition temperature of between from about 20° C. to about 65° C., and pigment particles.
Claim 3
Dependent Claim
64 words
A toner composition in accordance with claim 1 wherein the chemically coupled multiblock resin is of the formula Q[--(A--B).sub.n --Y].sub.m wherein A represents the glass segment, B represents the liquid segment, n is at least 2 and represents the number of A and B segments, m is the number of reactive sites on the coupling agent Q, and Y is a chain terminating group.
Claim 4
Dependent Claim
20 words
A toner composition in accordance with claim 2 wherein n is a number of from about 2 to about 100.
Claim 5
Dependent Claim
19 words
A toner composition in accordance with claim 2 wherein from about 2 to about 100 A segments are present.
Claim 6
Dependent Claim
19 words
A toner composition in accordance with claim 2 wherein from about 2 to about 100 B segments are present.
Claim 7
Dependent Claim
26 words
A toner composition in accordance with claim 2 wherein the A segments are comprised of a polystyrene, and the B segments are comprised of a polybutadiene.
Claim 8
Dependent Claim
23 words
A toner composition in accordance with claim 2 wherein the coupled multiblock polymer is disubstituted bis[poly(styrene-1,2-butadiene] dimethyl silane of the formula (CH.sub.3).sub.2 Si[poly(styrene-1,2-butadiene)].sub.2.
Claim 9
Dependent Claim
25 words
A toner composition in accordance with claim 1 wherein the resin particles have a number average molecular weight of from about 3,000 to about 70,000.
Claim 10
Dependent Claim
25 words
A toner composition in accordance with claim 2 wherein the resin particles dispersity ratio M w /M n is from about 1 to about 15.
Claim 11
Dependent Claim
47 words
A toner composition in accordance with claim 2 wherein the pigment particles are selected from the group consisting of carbon black, magnetites, and mixtures thereof; or wherein the pigment particles are selected from the group consisting of red, blue, green, brown, cyan, magenta, yellow, and mixtures thereof.
Claim 12
Dependent Claim
12 words
A toner composition in accordance with claim 1 containing charge enhancing additives.
Claim 13
Dependent Claim
76 words
A toner composition in accordance with claim 11 wherein the charge enhancing additives are selected from the group consisting of alkyl pyridinium halides, organic sulfates, organic bisulfates, organic sulfonates, distearyl dimethyl ammonium methyl sulfates, distearyl dimethyl ammonium bisulfates, cetyl pyridinium lakes, polyvinyl pyridine, tetraphenyl borate salts, phosphonium salts, nigrosine, metal-salicylate salts, amino-hydroxy substituted naphthalene sulfonate quaternary ammonium salts, aluminium salicylate salts, polystyrene-polyethylene oxide block copolymer salt complexes, poly(dimethyl amino methyl methacrylates), and metal azo dye complexes.
Claim 14
Dependent Claim
46 words
A toner composition in accordance with claim 2 wherein the triboelectric charge on the toner is from about a positive or negative 5 to about 35 microcoulombs per gram, and the toner composition has a fusing temperature of between about 220° F. to about 310° F.
Claim 15
Dependent Claim
14 words
A developer composition comprised of the toner composition of claim 1, and carrier particles.
Claim 16
Dependent Claim
22 words
A developer composition in accordance with claim 14 wherein the carrier particles are comprised of a core of steel, iron, or ferrites.
Claim 17
Dependent Claim
17 words
A developer composition in accordance with claim 14 wherein the carrier particles include thereover a polymeric coating.
Claim 18
Dependent Claim
45 words
A method for developing images which comprises the formation of an electrostatic latent image on a photoconductive member; developing the resulting image with the toner composition of claim 1; subsequently transferring the developed image to a suitable substrate; and thereafter permanently affixing the image thereto.
Claim 19
Dependent Claim
25 words
A toner composition in accordance with claim 2 wherein B is atactic poly-1,2-butadiene, cis and trans poly-1,4-butadiene, hydrogenated cis and trans poly-1,2-butadiene or 1,2-vinyl polybutadiene.
Claim 20
Dependent Claim
21 words
A toner composition in accordance with claim 2 containing chemically coupled multi-segmented block polymers wherein B is poly(cyclooctene) or hydrogenated poly(cyclooctene).
Claim 21
Dependent Claim
64 words
A toner composition comprised of the chemically coupled particulate multiblock polymers of the formula Q[(A--B).sub.n ].sub.m --A wherein n is a number of from 2 to about 100, and wherein both ends of the polymer chain are terminated with a glassy component A; m represents the number of reactive sites on the coupling agent Q; and wherein A is polystyrene and B is polybutadiene.
Claim 22
Dependent Claim
64 words
A toner composition comprised of the chemically coupled particulate multiblock polymers of the formula Q[(A--B).sub.n ].sub.m --A wherein n is a number of from 2 to about 100, and wherein both ends of the polymer chain are terminated with a glassy component A; m represents the number of reactive sites on the coupling agent Q; and wherein A is polystyrene and B is polybutadiene.
Claim 23
Dependent Claim
81 words
A toner composition in accordance with claim 1 containing chemically coupled multiblock resin particles of the formula Q{[A--(C).sub.n --].sub.p --l}.sub.m wherein n is a number of from 1 to about 50, p is a number of from 1 to 4 and represents the number of arms that extend radially, I is the point of initiation; m is the number of reactive sites on the coupling agent Q; and wherein A is polystyrene and C is a gradient multiblock polymer of poly(styrene-butadiene).
Claim 24
Dependent Claim
75 words
A toner composition in accordance with claim 1 containing chemically coupled multiblock resin particles of the formula Q{[A--(C).sub.n --(B).sub.o --].sub.p --l} wherein n is a number of from 2 to about 50, o is a number of from 1 to about 25, and p is a number of from 1 to 4; Q is a coupling agent component; and wherein A is polystyrene, B is polybutadiene, and C is a gradient multiblock polymer of poly(styrene-butadiene).
Claim 25
Dependent Claim
90 words
A toner composition in accordance with claim 1 containing chemically coupled multiblock resin particles of the formula Q{[A--{--(C).sub.n --(B).sub.o --}.sub.q --].sub.p --l}.sub.m wherein n is a number of from 2 to about 50, o is a number of from 1 to about 25, q is a number from 1 to 50, and p is a number of from 1 to 4; m is the number of reactive sites on the coupling agent Q; and wherein A is polystyrene, B is polybutadiene, and C is a gradient multiblock polymer of poly(styrene-butadiene).
Claim 26
Dependent Claim
65 words
A toner composition in accordance with claim 1 containing chemically coupled multiblock resin particles of the formula Y'--Z--Y' wherein Y' is an ionizable radical on both ends of the coupled polymer chain, and Z is a coupled multiblock copolymer; or of the formula Z--Y' wherein Y' is an ionizable group on the end of the coupled polymer chain, and Z is a coupled multiblock copolymer.
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