US4246154A
Expired / Lapsed
US
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Ink composition for ink jet recording
Assignee: Fujifilm Holdings Corp
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Filing: 1978-10-18
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Granted: 1981-01-20
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Expires: 1998-10-18
Abstract
Abstract An ink composition for ink jet recording which is an oil in-water type dispersion prepared by dispersing, in an aqueous medium, a mixture of a hydrophobic dye solution and finely divided particles of vinyl polymer, wherein the vinyl polymer is essentially insoluble in water and does not swell in water but swells in solvents capable of dissolving hydrophobic dyes, said ink composition having a low viscosity, a high density and being very stable. The records obtained using this ink composition are not smeared or removed upon contact with water or perspiration.
Inventors
- 👤 Yasunori Yao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; Y; Y10; Y10S; Y10S526/00; Y10S526/939
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
An ink composition for ink jet recording which consists essentially of finely divided particles of vinyl polymer impregnated with a hydrophobic dye and dispersed in an aqueous medium.
Claim 2
Dependent Claim
28 words
An ink composition for ink jet recording which consists essentially of finely divided particles of vinyl polymer impregnated with a hydrophobic dye and dispersed in an aqueous medium.
Claim 3
Dependent Claim
31 words
The ink composition of claim 1, wherein said vinyl polymer is essentially insoluble to water and, does not swell in water, but swells in solvents capable of dissolving the hydrophobic dye.
Claim 4
Dependent Claim
253 words
The ink composition of claim 1 wherein said vinyl polymer is a polymer prepared by emulsion polymerization of (1) each of (A) at least one monomer selected from the group consisting of vinyl monomers having at least a free carboxylic acid group, a free sulfonic acid group or a free phosphoric acid group or a salt thereof and (B) at least one monomer selected from the group consisting of monomers represented by the following general formula (I) ##STR3## wherein X is a hydrogen atom, a methyl group or a --COOR 1 group; Y is a hydrogen atom, a methyl group or a --(CH 2 ) n COOR 2 group; Z is an aryl group, a --COOR 3 group or a ##STR4## group; R 1 , R 2 and R 3 , which may be the same or different, each represents an aliphatic group or an aryl group; and n is an integer of 0 to 3; or (2) each of (A) at least one monomer selected from the group consisting of the vinyl monomers described above, (B) at least one monomer selected from the group consisting of monomers represented by the general formula (I) above, and (C) at least one monomer selected from the group consisting of monofunctional or polyfunctional unsaturated monomers other than those monomers described in (A) and (B) above which are copolymerizable with the monomers described in (A) and (B) above and selected from the group consisting of acrylamides, methacrylamides, vinyl ethers, vinyl ketones, allyl compounds, olefins and unsaturated nitriles.
Claim 5
Dependent Claim
21 words
The ink composition of claim 1 wherein said vinyl particles have a particle size of about 0.01 to about 5 microns.
Claim 6
Dependent Claim
31 words
The ink composition of claim 1 wherein said vinyl polymer particle is present in an amount of about 2 to 20 wt.% based on the aqueous dispersion of the polymer particles.
Claim 7
Dependent Claim
22 words
The ink composition of claim 3 wherein said monomer (A) is acrylic acid, methacrylic acid, itaconic acid, 2-acrylamido-2-methylpropanesulfonic acid, mono(acryloyloxyalkyl)-phosphates or mono(methacryloyloxyalkyl)-phosphates,
Claim 8
Dependent Claim
28 words
The ink composition of claim 1, wherein said composition has a viscosity of about 1 to 3 cp at 25° C. and a pH of 9 to 11.
Claim 9
Dependent Claim
28 words
The ink composition of claim 7, wherein said composition has a surface tension of about 20 to about 50 dyne/cm and a conductivity of 10 to 0.1 mΩ/cm.
Claim 10
Dependent Claim
10 words
The ink composition of claim 1, which is a latex.
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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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |