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US5506295A
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Ink
Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1995-02-02
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Granted: 1996-04-09
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Expires: 2015-02-02
Abstract
Abstract Ink comprising an aqueous medium, a water-insoluble colorant and a dispersant for dispersing the colorant in the aqueous medium, the dispersant being a water-soluble polymer obtained by polymerizing a monomer containing at least one monomer selected from acryloylmorpholine represented by the formula (1): ##STR1## and styrene sulfonate represented by the formula (2): ##STR2## [wherein M is an alkaline metal atom or an amino group] is provided. This ink is suitable for using for an ink-jet recording system because it provides a fast recorded image and is also superior in storage stability and jetting stability.
Inventors
- 👤 Seiji Kado
- 👤 Hiromi Kosaka
- 👤 Masayuki Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:52
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
63 words
Ink comprising an aqueous medium, a water-insoluble colorant including a pigment, and a dispersant for dispersing said colorant in said aqueous medium, said dispersant being a water-soluble polymer obtained by polymerizing a monomer containing at least one monomer selected from acryloylmorpholine of formula (1): ##STR8## and styrene sulfonate of formula (2): ##STR9## wherein M is an alkaline metal atom or an amino group.
Claim 2
Dependent Claim
63 words
Ink comprising an aqueous medium, a water-insoluble colorant including a pigment, and a dispersant for dispersing said colorant in said aqueous medium, said dispersant being a water-soluble polymer obtained by polymerizing a monomer containing at least one monomer selected from acryloylmorpholine of formula (1): ##STR8## and styrene sulfonate of formula (2): ##STR9## wherein M is an alkaline metal atom or an amino group.
Claim 3
Dependent Claim
79 words
Ink according to claim 1, wherein said water-soluble polymer is a copolymer obtained by copolymerizing at least one monomer selected from acryloylmorpholine of formula (1) and styrene sulfonate of formula (2) with at least one monomer selected from a lower fatty acid vinyl ester of formula (3): ##STR10## wherein n is an integer of 0 to 15, and R 1 and R 2 are the same or different and indicate a hydrogen atom or a methyl group, and styrene.
Claim 4
Dependent Claim
36 words
Ink according to claim 2, wherein an amount of at least one monomer selected from the lower fatty acid vinyl ester and styrene is 20 to 80% by weight based on the total amount of monomers.
Claim 5
Dependent Claim
17 words
Ink according to claim 1, wherein a polymerization degree of the water-soluble polymer is 99 or less.
Claim 6
Dependent Claim
27 words
Ink according to claim 1, wherein the water-soluble polymer is formulated in an amount of 0.1 to 10% by weight based on the total amount of ink.
Claim 7
Dependent Claim
18 words
Ink according to claim 1, wherein the water-insoluble colorant is composed of a pigment and a water-insoluble dye.
Claim 8
Dependent Claim
27 words
Ink according to claim 1, wherein the water-insoluble colorant is formulated in an amount of 1 to 15% by weight based on the total amount of ink.
Claim 9
Dependent Claim
13 words
Ink according to claim 1, which is used for an ink-jet recording system.
Claim 10
Dependent Claim
21 words
Ink according to claim 1, wherein said water-soluble polymer is obtained by polymerizing a monomer consisting of acryloylmorpholine of formula (1).
Claim 11
Dependent Claim
22 words
Ink according to claim 1, wherein said water-soluble polymer is obtained by polymerizing a monomer consisting of styrene sulfonate of formula (2).
Claim 12
Dependent Claim
26 words
Ink according to claim 1, wherein said water-soluble polymer is obtained by polymerizing monomers consisting of acryloylmorpholine of formula (1) and styrene sulfonate of formula (2).
Claim 13
Dependent Claim
41 words
Ink according to claim 1, wherein said water-soluble polymer is obtained by copolymerizing a monomer consisting of acryloylmorpholine of formula (1) and a monomer selected from the group consisting of a lower fatty acid vinyl ester of formula (3) and styrene.
Claim 14
Dependent Claim
42 words
Ink according to claim 1, wherein said water-soluble polymer is obtained by copolymerizing a monomer consisting of styrene sulfonate of formula (2) and a monomer selected from the group consisting of a lower fatty acid vinyl ester of formula (3) and styrene.
Claim 15
Dependent Claim
14 words
Ink according to claim 2, wherein n is an integer of 0 to 3.
Claim 16
Dependent Claim
13 words
Ink according to claim 4, wherein said polymerization degree is 20 to 70.
Claim 17
Dependent Claim
152 words
Ink according to claim 1, wherein said ink consists essentially of an aqueous medium, a water-insoluble colorant including a pigment and optionally a water-insoluble dye, and a dispersant for dispersing said colorant in said aqueous medium, said dispersant being a water-soluble polymer obtained by polymerizing a monomer containing at least one monomer selected from acryloylmorpholine of formula (1): ##STR11## and styrene sulfonate of formula (2): ##STR12## wherein M is an alkaline metal atom or an amino group; or wherein said water-soluble polymer is a copolymer obtained by copolymerizing at least one monomer selected from acryloylmorpholine of formula (1) and styrene sulfonate of formula (2) with at least one monomer selected from a lower fatty acid vinyl ester of formula (3): ##STR13## wherein n is an integer of 0 to 15, and R 1 and R 2 are the same or different and indicate a hydrogen atom or a methyl group, and styrene.
References Cited (Backward Citations)
US4623689A
Cited
US4740549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-09 | 1999-10-09 | 2000-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-09 | 2003-10-09 | 2004-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-09 | 2007-10-09 | 2008-04-09 | $7700.00 | Window Closed / Lapsed |