Patent US5198022A successfully refreshed from Google Patents.
US5198022A
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Waterfast dye and aqueous ink
Assignee: Lexmark International Inc
•
Filing: 1992-01-17
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Granted: 1993-03-30
•
Expires: 2012-01-17
Abstract
Abstract A alkali-soluble dye for a waterfast ink having structural formula as follows: <IMAGE> and an ink containing the dye dissolved in water. Printing from the ink is insoluble below pH 6.0; is an intense black at low concentration; and remains black on acid papers. The aqueous inks are stable and exhibit good printhead nozzle maintenance.
Inventors
- 👤 Rodney O. Aulick
- 👤 Bradley L. Beach
- 👤 Donald L. Elbert
- 👤 Terence E. Franey
- 👤 James F. Feeman
- 👤 John M. Olson
- 👤 Allen C. Sanders
- 👤 Robert L. Vollmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:36
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; C09B; C09B31/00; C09B31/02; C09B31/08; C09B31/16; C09B31/18
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
136 words
A dye of the structural formula: ##STR11## where; R 1 is --H, --CO 2 M, --CH 3 , --OR 3 , Cl; R 2 is -lower alkyl having 1-4 C atoms, -lower alkoxy having 1-4 C atoms, --CH 2 CO 2 M; R 3 is -lower alkyl having 1-4 C atoms, R 4 is --NH 2 , --NHR 3 , --NHCH 2 CO 2 H, ##STR12## R 5 is --H, --CO 2 M; R 6 is --H, --NH 2 and, when R 5 is --H, R 6 is --NH 2 , R 2 is lower alkyl or lower alkoxy, and R 1 is --OC 2 M, --CH 3 , --OR 3 , Cl, M is H, NH 4 , Na, K, Li and wherein the total number of --CO 2 M groups is 1 to 3.
Claim 2
Dependent Claim
136 words
A dye of the structural formula: ##STR11## where; R 1 is --H, --CO 2 M, --CH 3 , --OR 3 , Cl; R 2 is -lower alkyl having 1-4 C atoms, -lower alkoxy having 1-4 C atoms, --CH 2 CO 2 M; R 3 is -lower alkyl having 1-4 C atoms, R 4 is --NH 2 , --NHR 3 , --NHCH 2 CO 2 H, ##STR12## R 5 is --H, --CO 2 M; R 6 is --H, --NH 2 and, when R 5 is --H, R 6 is --NH 2 , R 2 is lower alkyl or lower alkoxy, and R 1 is --OC 2 M, --CH 3 , --OR 3 , Cl, M is H, NH 4 , Na, K, Li and wherein the total number of --CO 2 M groups is 1 to 3.
Claim 3
Dependent Claim
24 words
A waterfast ink comprising at least 1% by weight of a dye of claim 1 dissolved in a polar vehicle as the ammonium salt.
Claim 4
Dependent Claim
15 words
The ink of claim 2 in which the dye is of the structural formula: ##STR13##
Claim 5
Dependent Claim
10 words
The dye of claim 1 of the structural formula: ##STR14##
Claim 6
Dependent Claim
9 words
The dye of claim 1 of structural formula: ##STR15##
Claim 7
Dependent Claim
14 words
The ink of claim 2 in which the dye is of structural formula: ##STR16##
Claim 8
Dependent Claim
9 words
The dye of claim 1 of structural formula: ##STR17##
Claim 9
Dependent Claim
14 words
The ink of claim 2 in which the dye is of structural formula: ##STR18##
Claim 10
Dependent Claim
9 words
The dye of claim 1 of structural formula: ##STR19##
Claim 11
Dependent Claim
14 words
The ink of claim 2 in which the dye is of structural formula: ##STR20##
Claim 12
Dependent Claim
9 words
The dye of claim 1 of structural formula: ##STR21##
Claim 13
Dependent Claim
14 words
The ink of claim 2 in which the dye is of structural formula: ##STR22##
Claim 14
Dependent Claim
9 words
The dye of claim 1 of structural formula: ##STR23##
Claim 15
Dependent Claim
14 words
The ink of claim 2 in which the dye is of structural formula: ##STR24##
Claim 16
Dependent Claim
147 words
A waterfast ink comprising by weight: (a) at least 1% of dye of the structural formula: ##STR25## where; R 1 is --H, --CO 2 M, --CH 3 , --OR 3 , Cl; R 2 is -lower alkyl having 1-4 C atoms, -lower alkoxy having 1-4 C atoms, --CH 2 CO 2 M; R 3 is -lower alkyl having 1-4 C atoms, R 4 is --NH 2 , --NHR 3 , --NHCH 2 CO 2 H, ##STR26## R 5 is --H, -lower alkyl having 1-4 C atoms, --CO 2 M; R 6 is --H, --NH 2 ; M is H, NH 4 , Na, K, Li and wherein the total number of --CO 2 M groups is 1 to 3; (b) at least 2% of a cosolvent, and (c) water and ammonium ion bringing said ink to an alkaline pH sufficient to dissolve said dye in said ink.
Claim 17
Dependent Claim
147 words
A waterfast ink comprising by weight: (a) at least 1% of dye of the structural formula: ##STR25## where; R 1 is --H, --CO 2 M, --CH 3 , --OR 3 , Cl; R 2 is -lower alkyl having 1-4 C atoms, -lower alkoxy having 1-4 C atoms, --CH 2 CO 2 M; R 3 is -lower alkyl having 1-4 C atoms, R 4 is --NH 2 , --NHR 3 , --NHCH 2 CO 2 H, ##STR26## R 5 is --H, -lower alkyl having 1-4 C atoms, --CO 2 M; R 6 is --H, --NH 2 ; M is H, NH 4 , Na, K, Li and wherein the total number of --CO 2 M groups is 1 to 3; (b) at least 2% of a cosolvent, and (c) water and ammonium ion bringing said ink to an alkaline pH sufficient to dissolve said dye in said ink.
Claim 18
Dependent Claim
12 words
The ink as in claim 15 in which said cosolvent is 2-pyrrolidone.
Claim 19
Dependent Claim
12 words
The ink as in claim 16 in which said dye is ##STR27##
Claim 20
Dependent Claim
12 words
The ink as in claim 15 in which said dye is ##STR28##
Claim 21
Dependent Claim
12 words
The ink as in claim 15 in which said dye is ##STR29##
Claim 22
Dependent Claim
12 words
The ink as in claim 16 in which said dye is ##STR30##
Claim 23
Dependent Claim
12 words
The ink as in claim 15 in which said dye is ##STR31##
Claim 24
Dependent Claim
12 words
The ink as in claim 16 in which said dye is ##STR32##
Claim 25
Dependent Claim
12 words
The ink as in claim 15 in which said dye is ##STR33##
Claim 26
Dependent Claim
12 words
The ink as in claim 16 in which said dye is ##STR34##
Claim 27
Dependent Claim
12 words
The ink as in claim 15 in which said dye is ##STR35##
Claim 28
Dependent Claim
12 words
The ink as in claim 16 in which said dye is ##STR36##
Claim 29
Dependent Claim
12 words
The ink as in claim 15 in which said dye is ##STR37##
Claim 30
Dependent Claim
12 words
The ink as in claim 16 in which said dye is ##STR38##
Claim 31
Dependent Claim
18 words
The ink as in claim 15 in which said dye is about 2% by weight of said ink.
Claim 32
Dependent Claim
18 words
The ink as in claim 18 in which said dye is about 2% by weight of said ink.
Claim 33
Dependent Claim
18 words
The ink as in claim 19 in which said dye is about 2% by weight of said ink.
Claim 34
Dependent Claim
18 words
The ink as in claim 21 in which said dye is about 2% by weight of said ink.
Claim 35
Dependent Claim
18 words
The ink as in claim 23 in which said dye is about 2% by weight of said ink.
Claim 36
Dependent Claim
18 words
The ink as in claim 25 in which said dye is about 2% by weight of said ink.
Claim 37
Dependent Claim
18 words
The ink as in claim 27 in which said dye is about 2% by weight of said ink.
Claim 38
Dependent Claim
18 words
The ink as in claim 24 in which said dye is about 2% by weight of said ink.
Claim 39
Dependent Claim
13 words
The ink as in claim 36 in which said pH is about 8.6.
Claim 40
Dependent Claim
13 words
The ink as in claim 23 in which said pH is about 8.6.
Claim 41
Dependent Claim
18 words
The ink as in claim 37 in which said 2-pyrrolidone is about 5% by weight of said ink.
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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) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |