US4766051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored encapsulated toner compositions
Assignee: Xerox Corp
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Filing: 1986-09-02
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Granted: 1988-08-23
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Expires: 2006-09-02
Abstract
Abstract A cold pressure fixable colored toner composition comprised of a core containing a polymer in which is dispersed pigment particles selected from the group consisting of cyan, magenta, red, yellow pigments, and mixtures thereof, other than carbon blacks and magnetites; and encapsulated within a polymeric shell formulated by an interfacial polymerization.
Inventors
- 👤 Marcel P. Breton
- 👤 Terry L. Bluhm
- 👤 Kar P. Lok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:16
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0906; G03G9/0908; G03G9/093; G03G9/0935; G03G9/09357; G03G9/09364; G03G9/09371; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2989
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
77 words
A composition suitable for use as an electrophotographic developer, said composition comprising a cold pressure fixable colored toner composition comprised of a core containing a polymer selected from the Group consisting of polyolefins, polyostrene-butadiene copolymers, polybutadienes, polybutenes, polyisoprenes and polysiloxane. in which is dispersed pigment particles selected from the group consisting of cyan, magenta, red, yellow pigments, and mixtures thereof, other than carbon blacks and magnetites; and encapsulated within a polymeric shell formulated by an interfacial polymerization.
Claim 2
Dependent Claim
77 words
A composition suitable for use as an electrophotographic developer, said composition comprising a cold pressure fixable colored toner composition comprised of a core containing a polymer selected from the Group consisting of polyolefins, polyostrene-butadiene copolymers, polybutadienes, polybutenes, polyisoprenes and polysiloxane. in which is dispersed pigment particles selected from the group consisting of cyan, magenta, red, yellow pigments, and mixtures thereof, other than carbon blacks and magnetites; and encapsulated within a polymeric shell formulated by an interfacial polymerization.
Claim 3
Dependent Claim
13 words
A toner composition in accordance with claim 1 wherein the polymer is polyisobutylene.
Claim 4
Dependent Claim
14 words
A toner composition in accordance with claim 1 wherein the cyan pigmentis Sudan Blue.
Claim 5
Dependent Claim
16 words
A toner composition in accordance with claim 1 wherein the magenta pigment is Hostaperm Pink E.
Claim 6
Dependent Claim
16 words
A toner composition in accordance with claim 1 wherein the yellow pigment is Novaperm Yellow FGL.
Claim 7
Dependent Claim
14 words
A toner composition in accordance with claim 1 wherein the shell is a polyurea.
Claim 8
Dependent Claim
61 words
A toner composition in accordance with claim 1 wherein the polymer is present in an amount of from about 20 to about 80 percent by weight, the pigment component is present in an amount of from about 5 to 25 percent by weight, and the shell is present in an amount of from about 15 to about 25 percent by weight.
Claim 9
Dependent Claim
71 words
A composition suitable for use as an electrophotographic said composition comprising a cold pressure fixable colored toner composition comprised of a core containing a polymer selected from the Group consisting of polyolefins, polystyrene-butadiene copolymers, polybutadienes, polybutenes, polyisoprenes and polysiloxane. in which is dispersed a newsprint ink comprised of a polymer with a pigment therein, other than carbon blacks and magnetites; and encapsulated within a polymeric shell formulated by an interfacial polymerization.
Claim 10
Dependent Claim
71 words
A composition suitable for use as an electrophotographic said composition comprising a cold pressure fixable colored toner composition comprised of a core containing a polymer selected from the Group consisting of polyolefins, polystyrene-butadiene copolymers, polybutadienes, polybutenes, polyisoprenes and polysiloxane. in which is dispersed a newsprint ink comprised of a polymer with a pigment therein, other than carbon blacks and magnetites; and encapsulated within a polymeric shell formulated by an interfacial polymerization.
Claim 11
Dependent Claim
13 words
A toner composition in accordance with claim 8 wherein the polymer is polyisobutylene.
Claim 12
Dependent Claim
14 words
A toner composition in accordance with claim 8 wherein the shell is a polyurea.
Claim 13
Dependent Claim
29 words
A toner composition in accordance with claim 1 further including therein additive particles selected from the group consisting of colloidal silicas, metal salts, and metal salts of fatty acids.
Claim 14
Dependent Claim
29 words
A toner composition in accordance with claim 8 further including therein additive particles selected from the group consisting of colloidal silicas, metal salts, and metal salts of fatty acids.
Claim 15
Dependent Claim
14 words
A toner composition in accordance with claim 11 wherein the additive is zinc stearate.
Claim 16
Dependent Claim
14 words
A toner composition in accordance with claim 12 wherein the additive is zinc stearate.
Claim 17
Dependent Claim
77 words
A composition suitable for use as an electrophotographic developer, said composition comprising a cold pressure fixable colored toner composition comprised of a core containing a polyolefin polymer with a weight average molecular weight of from about 50,000 to about 100,000 in which is dispersed pigment particles selected from the group consisting of cyan, magenta, red, yellow pigments and mixtures thereof, other than carbon blacks and magnetites; and encapsulated with a polymeric shell formulated by an interfacial polymerization.
Claim 18
Dependent Claim
77 words
A composition suitable for use as an electrophotographic developer, said composition comprising a cold pressure fixable colored toner composition comprised of a core containing a polyolefin polymer with a weight average molecular weight of from about 50,000 to about 100,000 in which is dispersed pigment particles selected from the group consisting of cyan, magenta, red, yellow pigments and mixtures thereof, other than carbon blacks and magnetites; and encapsulated with a polymeric shell formulated by an interfacial polymerization.
Claim 19
Dependent Claim
14 words
A toner composition in accordance with claim 15 wherein the polyolefin is a polyisobutylene.
Claim 20
Dependent Claim
23 words
A toner composition in accordance with claim 15 wherein the polyolefin is selected from the group consisting of polystyrene butadiene copolymers, and polybutadienes.
Claim 21
Dependent Claim
23 words
A toner composition in accordance with claim 1 wherein the polymer is selected from the group consisting of polybutenes, polyisoprenes, and polysiloxane copolymers.
References Cited (Backward Citations)
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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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |