US6454846B2
Expired / Lapsed
US
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Ink composition suitable for use in ink jet recording
Assignee: Seiko Epson Corp
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Filing: 2001-02-21
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Granted: 2002-09-24
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Expires: 2021-02-21
Abstract
Abstract An ink composition is provided which can yield prints having high color density and, even when printed on recycled papers, causes no significant feathering or bleeding and, at the same time, has excellent ejection stability and storage stability, The ink composition comprises a colorant, water, and a compound represented by formula (I):wherein R represents an alkoxy group having in its molecular chain an acetylene bond; EO represents an ethyleneoxy group; and PO represents a propyleneoxy group; n and m each represent a repeating unit in terms of an average value in the whole system. EO and PO may be present in any order in the molecule. M represents a terminal group attached to the terminal oxygen atom of EO or PO.
Inventors
- 👤 Masahiro Yatake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:07
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/38
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
117 words
An ink composition comprising a colorant, water, and a compound represented by formula (I): RO[EO n PO m ]M (I) wherein R represents a group represented by formula; R 1 represents an alkyl, cycloalkyl, or aryl group; EO represents an ethyleneoxy group; PO represents a propyleneoxy group; m and n each are independently 0 (zero) or a natural number of not less than 1, provided that m+n>1; EO and PO may be arranged, regardless of order in the parentheses of formula (I), randomly or as blocks joined together; R 2 and R 3 each independently represent a hydrogen atom or an alkyl group; and M is a group attached to the terminal oxygen atom within the parentheses.
Claim 2
Dependent Claim
117 words
An ink composition comprising a colorant, water, and a compound represented by formula (I): RO[EO n PO m ]M (I) wherein R represents a group represented by formula; R 1 represents an alkyl, cycloalkyl, or aryl group; EO represents an ethyleneoxy group; PO represents a propyleneoxy group; m and n each are independently 0 (zero) or a natural number of not less than 1, provided that m+n>1; EO and PO may be arranged, regardless of order in the parentheses of formula (I), randomly or as blocks joined together; R 2 and R 3 each independently represent a hydrogen atom or an alkyl group; and M is a group attached to the terminal oxygen atom within the parentheses.
Claim 3
Dependent Claim
16 words
The ink composition according to claim 1 , wherein m in formula (I) is 0 (zero).
Claim 4
Dependent Claim
17 words
The ink composition according to claim 2 , wherein n in formula (I) is 1 to 10.
Claim 5
Dependent Claim
17 words
The ink composition according to claim 1 , wherein m in formula (I) is not 0 (zero).
Claim 6
Dependent Claim
24 words
The ink composition according to claim 4 , wherein n in formula (I) is 0 (zero) to 10 and m is 1 to 5.
Claim 7
Dependent Claim
59 words
The ink composition according to claim 1 , wherein M in formula (I) is (i) a hydrogen atom, (ii) an alkali metal, an inorganic base, or an organic base, or (iii) a residue of an acid selected from the group consisting of sulfonic acid, phosphoric acid, and boric acid, or a salt of said acid with said compound (ii).
Claim 8
Dependent Claim
25 words
The ink composition according to claim 1 , wherein the compound represented by formula (I) has an average molecular weight of not more than 2000.
Claim 9
Dependent Claim
23 words
The ink composition according to claim 1 , wherein the total number of carbons in R in formula (I) is 4 to 50.
Claim 10
Dependent Claim
18 words
The ink composition according to claim 1 , wherein R 1 in formula (II) has a branched structure.
Claim 11
Dependent Claim
31 words
The ink composition according to claim 1 , which further comprises a penetrating agent selected from the group consisting of propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, and mixtures thereof.
Claim 12
Dependent Claim
22 words
The ink composition according to claim 10 , wherein the content of the penetrating agent is not more than 10% by weight.
Claim 13
Dependent Claim
29 words
The ink composition according to claim 10 or 11 , wherein the weight ratio of the compound represented by formula (I) to the penetrating agent is 1:0 to 1:10.
Claim 14
Dependent Claim
15 words
The ink composition according to claim 1 , which further comprises an acetylene glycol surfactant.
Claim 15
Dependent Claim
23 words
The ink composition according to claim 13 , wherein the content of the acetylene glycol surfactant is not more than 5% by weight.
Claim 16
Dependent Claim
31 words
The ink composition according to claim 13 or 14 , wherein the weight ratio of the compound represented by formula (I) to the acetylene glycol surfactant is 1:0 (zero) to 1:3.
Claim 17
Dependent Claim
20 words
The ink composition according to claim 1 , which further comprises diethylene glycol monobutyl ether or triethylene glycol monobutyl ether.
Claim 18
Dependent Claim
28 words
The ink composition according to claim 16 , wherein the content of diethylene glycol monobutyl ether or triethylene glycol monobutyl ether is not more than 20% by weight.
Claim 19
Dependent Claim
34 words
The ink composition according to claim 16 , wherein the weight ratio of the compound represented by formula (I) to diethylene glycol monobutyl ether or triethylene glycol monobutyl ether is 1:0 (zero) to 1:10.
Claim 20
Dependent Claim
25 words
The ink composition according to claim 1 , wherein the colorant is a member selected from the group consisting of dyes, pigments, and mixtures thereof.
Claim 21
Dependent Claim
32 words
The ink composition according to claim 19 , wherein the pigment has been surface treated to introduce a hydrophilic group into the pigment and thus to render the pigment self-dispersible in water.
Claim 22
Dependent Claim
15 words
The ink composition according to claim 1 , which is used in ink jet recording.
Claim 23
Dependent Claim
28 words
A recording method comprising the step of depositing an ink composition onto a recording medium to perform printing, the ink composition being one according to claim 1 .
Claim 24
Dependent Claim
36 words
An ink jet recording method comprising the steps of: ejecting droplets of an ink composition; and depositing the droplets onto a recording medium to perform printing, the ink composition being one according to claim 1 .
Claim 25
Dependent Claim
12 words
A record produced by the recording method according to claim 22 .
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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) | 2005-09-23 | 2006-03-25 | 2006-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-23 | 2010-03-25 | 2010-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-23 | 2014-03-25 | 2014-09-24 | $7700.00 | Window Closed / Lapsed |