US5714993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jettable toner compositions and processes for making and using
Assignee: Xerox Corp
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Filing: 1996-05-08
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Granted: 1998-02-03
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Expires: 2016-05-08
Abstract
Abstract A process for the preparation of toner compositions comprising: forming a mixture comprised of at least one free radical reactive monomer, a colorant, a stabilizer compound containing a stable free radical reactive group, and a liquid vehicle; and heating the mixture from about 75° to about 200° C. to effect polymerization of said monomer, wherein there results stabilized core resin particles containing said colorant and wherein said stabilized core particles are stabilized by said stable free radical reactive stabilizer compounds being bonded directly to the core particles.
Inventors
- 👤 Barkev Keoshkerian
- 👤 Michael K. Georges
- 👤 Stephan V. Drappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:03
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C08; C08F; C08F287/00; C08F291/00; G; G03; G03G; G03G9/00; G03G9/08; G03G9/0802; G03G9/0804; G03G9/0806; G03G9/087; G03G9/08702; G03G9/08784; G03G9/08791
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
77 words
A method of imaging comprising: jetting with a liquid jet an ink jettable toner composition comprised of a liquid carrier vehicle and stabilized core particles comprised of resin, colorant, and a stabilizer component which is covalently bonded to the core particles, in a predetermined pattern onto a receiving member to form an image; and fixing the image to a receiver by heating or irradiating the image and/or the receiver at from about 40° to about 150° C.
Claim 2
Independent Claim
77 words
A method of imaging comprising: jetting with a liquid jet an ink jettable toner composition comprised of a liquid carrier vehicle and stabilized core particles comprised of resin, colorant, and a stabilizer component which is covalently bonded to the core particles, in a predetermined pattern onto a receiving member to form an image; and fixing the image to a receiver by heating or irradiating the image and/or the receiver at from about 40° to about 150° C.
Claim 3
Dependent Claim
24 words
A method in accordance with claim 1 wherein there results high quality images with an optical density of from about 1.0 to about 1.4.
Claim 4
Dependent Claim
25 words
A method in accordance with claim 2 wherein the resulting high quality images have edge raggedness or MFLEN value of about 1 to about 10.
Claim 5
Dependent Claim
30 words
A method in accordance with claim 2 wherein the resulting high quality images have a resolution of at least about 600 spi when jetted from an ink jet print head.
Claim 6
Dependent Claim
24 words
A method in accordance with claim 2 wherein the resulting high quality images do not wet smear on contact with water and mechanical abrasion.
Claim 7
Dependent Claim
22 words
A method in accordance with claim 1 wherein the ink composition has a latency of about 5 seconds to about 2,000 seconds.
Claim 8
Dependent Claim
23 words
A method in accordance with claim 1 wherein the ink composition composition has a recoverability of about 50 seconds to about 2,000 seconds.
Claim 9
Dependent Claim
28 words
A method in accordance with claim 1 wherein the heating or fixing of the image is accomplished at a temperature of about 25° C. to about 90° C.
Claim 10
Dependent Claim
48 words
A method in accordance with claim 1 wherein there results essentially no koagation on heating elements of the jetting means after continuously jetting of the ink jettable toner composition from about 10 6 to 10 9 drops at a temperature of about 200° C. to about 400° C.
Claim 11
Dependent Claim
87 words
A toner composition comprising a liquid carrier vehicle, and marking particles comprised of core resin, a colorant, additives, and at least one stable free radical reactive polymeric stabilizer compound, wherein said stabilizer compound is comprised of a stabilizing arm or arms and at least one stable free radical agent(SFR), wherein said stabilizer arm or arms are covalently bonded to the surface of said particles and said stable free radical agent (SFR) is covalently bonded to the surface of said particles or to said stabilizer arm or arms.
Claim 12
Dependent Claim
87 words
A toner composition comprising a liquid carrier vehicle, and marking particles comprised of core resin, a colorant, additives, and at least one stable free radical reactive polymeric stabilizer compound, wherein said stabilizer compound is comprised of a stabilizing arm or arms and at least one stable free radical agent(SFR), wherein said stabilizer arm or arms are covalently bonded to the surface of said particles and said stable free radical agent (SFR) is covalently bonded to the surface of said particles or to said stabilizer arm or arms.
Claim 13
Dependent Claim
60 words
A composition in accordance with claim 10 wherein the liquid carrier vehicle is selected from the group consisting of water, ethylene glycol, propylene glycol, diethylene glycols, glycerine, dipropylene glycols, polyethylene glycols, polypropylene glycols, amides, ethers, carboxylic acids, esters, alcohols, organosulfides, organosulfoxides, sulfones, dimethylsulfoxide, sulfolane, alcohol derivatives, ether derivatives, hydroxy ether compounds and derivatives thereof, amino alcohols, ketones, and mixtures thereof.
Claim 14
Dependent Claim
27 words
A composition in accordance with claim 10 wherein the marking particles are sterically and electrostatically stabilized by the stable free radical reactive stabilizer compound covalently bonded thereto.
Claim 15
Dependent Claim
35 words
A composition in accordance with claim 10 wherein the marking particles are thermally stable in a liquid dispersion and in a liquid jet over a temperature range from about 5° C. to about 200° C.
Claim 16
Dependent Claim
37 words
A composition in accordance with claim 10 wherein the marking particles are comprised of emulsion or suspension stabilized polymerized resin particles which are thermally stable up to about 200° C. when dispersed in the liquid carrier vehicle.
Claim 17
Dependent Claim
11 words
A composition in accordance with claim 10 which is humectant free.
Claim 18
Dependent Claim
51 words
A composition in accordance with claim 10 wherein the core resin or resins have a weight average molecular weight (M w ) of about 10,000 to about 200,000, a number average molecular weight (M n ) of about 9,000 to about 180,000, and a polydispersity of about 1.0 to about 2.0.
Claim 19
Dependent Claim
24 words
A composition in accordance with claim 10 wherein the marking particles have a volume average diameter of about 10 nm to about 100 nm.
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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) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |