US4680332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet compositions and process for preparation thereof
Assignee: Xerox Corp
•
Filing: 1986-01-24
•
Granted: 1987-07-14
•
Expires: 2006-01-24
Abstract
Abstract Disclosed is a heterophase ink composition comprised of a water insoluble polymer dispersed in a liquid medium, the polymer containing therein an oil soluble dye, and a nonionic stabilizer permanently attached thereto.
Inventors
- 👤 Michael L. Hair
- 👤 Kar P. Lok
- 👤 Christopher K. Ober
- 👤 Melvin D. Croucher
- 👤 Raymond W. Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:29
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
68 words
A heterophase ink jet composition comprised of a water insoluble polymer dispersed in a liquid medium selected from the group consisting of water, an alcohol, wherein the polymer contains therein an solvent soluble dye and a nonionic stabilizer permanently attached to the polymer, and mixtures of water and an alcohol; and wherein the resulting ink composition has a surface tension of from about 45 to about 65 dynes/cm.
Claim 2
Dependent Claim
68 words
A heterophase ink jet composition comprised of a water insoluble polymer dispersed in a liquid medium selected from the group consisting of water, an alcohol, wherein the polymer contains therein an solvent soluble dye and a nonionic stabilizer permanently attached to the polymer, and mixtures of water and an alcohol; and wherein the resulting ink composition has a surface tension of from about 45 to about 65 dynes/cm.
Claim 3
Dependent Claim
15 words
An ink composition in accordance with claim 1 wherein the alcohol is an aliphatic alcohol.
Claim 4
Dependent Claim
15 words
An ink composition in accordance with claim 1 wherein the alcohol is methanol or ethanol.
Claim 5
Dependent Claim
21 words
An ink composition in accordance with claim 1 wherein the polymer is obtained by the polymerization of a vinyl monomer composition.
Claim 6
Dependent Claim
26 words
An ink composition in accordance with claim 1 wherein the polymer is selected from the group consisting of poly(styrene), poly(butylmethacrylate), poly(vinylstearate), poly(methylmethacrylate), poly(laurylmethacrylate). and copolymers thereof.
Claim 7
Dependent Claim
44 words
An ink composition in accordance with claim 1 wherein the solvent soluble dye is selected from the group consisting of a yellow dye, a green dye, a red dye, a black dye, a cyan dye, a magenta dye, a blue dye, and mixtures thereof.
Claim 8
Dependent Claim
49 words
An ink composition in accordance with claim 1 wherein the stabilizer is selected from the group consisting of an ethylene oxide propylene oxide block copolymer such as Pluronic F68, poly(ethylene oxide) tertiary octylphenol, poly(vinyl alcohol), poly(acrylic acid), hydroxypropyl cellulose, poly(vinyl pyrrolidone), poly(ethylene oxide), poly(ethylene imine), and poly(ethylene oxide)monomethyl ether.
Claim 9
Dependent Claim
25 words
An ink composition in accordance with claim 1 wherein the diameter of the resulting ink particles are from about 0.03 micron to about 5.0 microns.
Claim 10
Dependent Claim
25 words
An ink composition in accordance with claim 1 wherein the alcohol is selected from the group consisting of isopropanol, ethylene glycol, glycerol and diethylene glycol.
Claim 11
Dependent Claim
40 words
An ink composition in accordance with claim 1 wherein the water is present in an amount of from 50 to 100 percent by volume, and the alcohol is present in an amount of from 0 to 50 percent by volume.
Claim 12
Dependent Claim
50 words
An ink composition in accordance with claim 1 wherein there is present in the following amounts: from about 5 percent to about 50 percent by weight colored particles dispersed in a liquid medium, the particles containing therein from about 5 percent to about 25 percent by weight solvent soluble dye.
Claim 13
Dependent Claim
24 words
An ink composition in accordance with claim 1 wherein there is further incorporated into the ink composition humectants, biocides, and surface tension control agents.
Claim 14
Dependent Claim
29 words
An ink composition in accordance with claim 1 wherein the solvent soluble dye is present in an amount of from about 5 percent to about 25 percent by weight.
Claim 15
Dependent Claim
17 words
An ink jet composition in accordance with claim 1 wherein the liquid medium is comprised of water.
Claim 16
Dependent Claim
23 words
An ink jet composition in accordance with claim 1 wherein the liquid medium is comprised of a mixture of an alcohol and water.
Claim 17
Dependent Claim
53 words
An ink jet composition in accordance with claim 1 wherein the liquid medium is comprised of an aliphatic alcohol present in an amount of from about 10 percent by volume to about 100 percent by volume, and water present in an amount of from 0 percent by volume to 90 percent by volume.
Claim 18
Dependent Claim
51 words
A heterophase ink jet composition consisting essentially of a water insoluble polymer dispersed in a liquid medium selected from the group consisting of water, an alcohol, and mixtures of water and an alcohol; and wherein the resulting ink composition has a surface tension of from about 45 to about 65 dynes/cm.
Claim 19
Dependent Claim
51 words
A heterophase ink jet composition consisting essentially of a water insoluble polymer dispersed in a liquid medium selected from the group consisting of water, an alcohol, and mixtures of water and an alcohol; and wherein the resulting ink composition has a surface tension of from about 45 to about 65 dynes/cm.
Claim 20
Dependent Claim
69 words
A heterophase ink jet composition consisting essentially of a water insoluble polymer dispersed in a liquid medium selected from the group consisting of water, an alcohol, wherein the polymer contains therein an oil soluble dye and a nonionic stabilizer permanently attached to the polymer, and mixtures of water and an alcohol; and wherein the resulting ink composition has a surface tension of from about 45 to about 65 dynes/cm.
Claim 21
Dependent Claim
69 words
A heterophase ink jet composition consisting essentially of a water insoluble polymer dispersed in a liquid medium selected from the group consisting of water, an alcohol, wherein the polymer contains therein an oil soluble dye and a nonionic stabilizer permanently attached to the polymer, and mixtures of water and an alcohol; and wherein the resulting ink composition has a surface tension of from about 45 to about 65 dynes/cm.
References Cited (Backward Citations)
US3903034A
Cited
US4032463A
Cited
US4157974A
Cited
US4165399A
Cited
US4136076A
Cited
US4168254A
Cited
US4210566A
Cited
US4543102A
Cited
US4476210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |