US5735941A
Expired / Lapsed
US
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Ink system with reduced bleed
Assignee: Daimler Benz AG
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Filing: 1996-07-24
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Granted: 1998-04-07
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Expires: 2016-07-24
Abstract
Abstract An ink system comprising a first ink containing a flocculating dye in an aqueous solution and a second ink containing a dispersant-pigment complex in an aqueous solution reduces bleed between the two inks when they are applied side by side. The flocculating dye flocculates the dispersant-pigment complex
Inventors
- 👤 James F. Feeman
- 👤 Ann P. Holloway
- 👤 Agnes K. Zimmer
- 👤 Jing X. Sun
- 👤 Terence E. Franey
- 👤 James M. Mrvos
- 👤 Bradley L. Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:05
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/28; C07D295/30; B; B41; B41M; B41M5/00; B41M5/0011; B41M5/0017; C07C; C07C215/00; C07C215/02; C07C215/40; C07D295/04; C07D295/12; C07D295/125; C07D295/13; C09; C09D; C09D11/00; C09D11/30; C09D11/40; B41M5/0023; B41M7/00; B41M7/0018
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
48 words
An ink system comprising: a. a first ink comprising a flocculating dye in an aqueous solution; and b. a second ink comprising a dispersant-pigment complex in an aqueous solution, wherein the flocculating dye of said first ink is capable of flocculating the dispersant-pigment complex of said second ink.
Claim 2
Dependent Claim
48 words
An ink system comprising: a. a first ink comprising a flocculating dye in an aqueous solution; and b. a second ink comprising a dispersant-pigment complex in an aqueous solution, wherein the flocculating dye of said first ink is capable of flocculating the dispersant-pigment complex of said second ink.
Claim 3
Dependent Claim
14 words
The ink system of claim 1 wherein said flocculating dye comprises no anionic groups.
Claim 4
Dependent Claim
16 words
The ink system of claim 1 wherein said flocculating dye comprises at least one quarternary nitrogen.
Claim 5
Dependent Claim
18 words
The ink system of claim 1 wherein said flocculating dye is a reactive dye with a quarternary group.
Claim 6
Dependent Claim
35 words
The ink system of claim 1 wherein said flocculating dye is selected from the group consisting of anthraquinone, azo, diphenylmethane, triphenylmethane, acridine, pyran, thiopyran, indamine, azine, oxazine, thiazine, hemicyanine, azacarbocyanine, diazacarbocyanine, triazacarbocyanine and diazahemicyanine dyes.
Claim 7
Dependent Claim
38 words
The ink system of claim 1 wherein said flocculating dye is selected from the group consisting of C.I. Basic Yellow 45, C.I. Basic Blue 163, C.I. Basic Red 15, C.I. Basic Red 16 and C.I. Basic Red 49.
Claim 8
Dependent Claim
66 words
The ink system of claim 1 wherein said flocculating dye is a compound of the formula: ##STR41## wherein m is about 0-6; n is about 2-4; each R is independently lower (C 1-4 ) alkyl, arylalkyl or hydroxyalkyl; PC is a metallic or nonmetallic comprising phthalocyanine group; R 1 is H or --CH 3 ; and each R 4 is independently H, lower alkyl or hydroxyalkyl.
Claim 9
Dependent Claim
34 words
The ink system of claim 7 wherein said compound is a dye selected from the group consisting of. ##STR42## wherein R 1 is H or --CH 3 and n is about 3 or 4.
Claim 10
Dependent Claim
20 words
The ink system of claim 7 wherein said compound is a cyan dye and PC is a copper phthalocyanine group.
Claim 11
Dependent Claim
87 words
The ink system of claim 1 wherein said flocculating dye is a compound of the formula: ##STR43## wherein Q 1 is hydroxyalkyl or ##STR44## Q 2 is H, lower alkyl, ##STR45## hydroxyalkyl, ##STR46## Q 3 is H or (C 1-4 ) alkyl; each M is independently H + , Na + , K + , Li + , N + (R 2 ) 4 ; each R 2 is independently H, lower (C 1-4 ) alkyl or hydroxyalkyl Z is an aromatic, aliphatic, amine or alkoxy group.
Claim 12
Dependent Claim
17 words
The ink system of claim 10 wherein said compound is selected from the group consisting of: ##STR47##
Claim 13
Dependent Claim
33 words
The ink system of claim 10 wherein said compounds are magenta dyes and M.sup.⊕ is Na.sup.⊕ ; Q 3 is H or --CH 3 and R 2 is H or --CH 3 .
Claim 14
Dependent Claim
95 words
The ink system of claim 1 wherein said flocculating dye compound selected from the group consisting of: ##STR48## wherein m is about 0 to 6; m' is about 0 to 6; each R is independently lower C.sub.(1-4) alky, arylalky, hydroxyalkyl; R 5 is lower C.sub.(1-4) alkyl or CO 2 M; R 6 is H, halogen, lower akyl or lower alkoxyl each R 7 is independently H lower alkyl or lower alkoxyl each R 3 is independently lower C.sub.(1-4) alkyl or hydroxyalkyl ##STR49## A is --OH or --NH 2 ; and M is as previously defined.
Claim 15
Dependent Claim
32 words
The ink system of claim 1 wherein said first ink further comprises a first ink solvent comprising at least about 25% by weight water and a balance which is an organic solvent.
Claim 16
Dependent Claim
17 words
The ink system of claim 14 wherein said first ink comprises about 1-6% by weight flocculating dye.
Claim 17
Dependent Claim
33 words
The ink system of claim 14 wherein said first ink further comprises a material selected from the group consisting of a humectant, a penetrant, an additional cationic material, a biocide and combinations thereof.
Claim 18
Dependent Claim
46 words
The ink system of claim 16 wherein said first ink about comprises 0.5-6% by weight flocculating dye, 5-25% by weight humectant, about 0.05-10% by weight penetrant, about 0-5% by weight additional cationic material and about and 0.1-0.5% by weight biocide and a balance which is solvent.
Claim 19
Dependent Claim
24 words
The ink system of claim 17 wherein said humectant is 2,2-thiodiethanol; said penetrant is 1,2-hexanediol; and said additional cationic material is a quaternary amine.
Claim 20
Dependent Claim
57 words
The ink system of claim 17 wherein said additional cationic material is selected from the group consisting of 1-dodecylpyridinium chloride; 1-hexadecylpyridinium chloride; methyldodecylbenzyltrimethyl ammonium chloride; octylcresoxyethoxyethyldimethyl benzyl ammonium chloride; lauryldimethyl benzyl ammonium chloride; ethyl bis(polyethoxylethanol)alkyl ammonium chloride; N-tallow pentamethyl propane diammonium dichloride; cocoaldylmethyl ethoxylated (2)! chloride; tallowalkylethoxylated (3) acetates; N-hexadecyl-N,N,N-trimethylammonium chloride; and N,N-dimethyl-2-hydroxypropylammonium chloride and combinations thereof.
Claim 21
Dependent Claim
35 words
The ink system of claim 17 wherein said additional cationic material is selected from the group consisting of: ##STR50## wherein X is Cl - (CH 3 ) 3 N.sup.⊕ CH 2 CH(OH)CH 2 , ##STR51##
Claim 22
Dependent Claim
16 words
The ink system of claim 1 wherein said first ink has a pH less than 7.
Claim 23
Dependent Claim
19 words
The ink system of claim 1 wherein said first ink has a pH between about 4 and about 6.
Claim 24
Dependent Claim
16 words
The ink system of claim 1 wherein said second ink comprises 1.5-12% by weight dispersant-pigment complex.
Claim 25
Dependent Claim
23 words
The ink system of claim 23 wherein said dispersant is a polymeric dispersant comprising a hydrophilic polymeric segment and a hydrophobic polymeric segment.
Claim 26
Dependent Claim
13 words
The ink system of claim 24 wherein said dispersant comprises a stabilizing segment.
Claim 27
Dependent Claim
22 words
The ink system of claim 25 wherein said dispersant is selected from the group consisting of graft copolymers, block copolymers and terpolymers.
Claim 28
Dependent Claim
16 words
The ink system of claim 23 wherein said second ink comprises about 0.1-10% by weight pigment.
Claim 29
Dependent Claim
27 words
The ink system of claim 23 wherein said pigment is selected from the group consisting of azo pigments, polycyclic pigments, dye lakes, organic pigments, and inorganic pigments.
Claim 30
Dependent Claim
23 words
The ink system of claim 23 wherein said pigment is selected from the group consisting of titanium oxide, iron oxide and carbon black.
Claim 31
Dependent Claim
16 words
The ink system of claim 23 wherein said polymeric dispersant has a hydrophobia amide side chain.
Claim 32
Dependent Claim
32 words
The ink system of claim 23 wherein said second ink further comprises a second ink solvent comprising at least about 25% by weight water with a balance which is an organic solvent.
Claim 33
Independent Claim
77 words
A method of controlling bleed between ink comprising the steps of: a. applying a first ink to a surface, wherein the first ink comprises a flocculating dye in an aqueous solution; and b. applying a second ink to the surface contiguous to the first ink, wherein said second ink comprises a dispersant-pigment complex in an aqueous solution, and wherein the flocculating dye of said first ink is capable of flocculating the dispersant-pigment complex of said second ink.
Claim 34
Independent Claim
77 words
A method of controlling bleed between ink comprising the steps of: a. applying a first ink to a surface, wherein the first ink comprises a flocculating dye in an aqueous solution; and b. applying a second ink to the surface contiguous to the first ink, wherein said second ink comprises a dispersant-pigment complex in an aqueous solution, and wherein the flocculating dye of said first ink is capable of flocculating the dispersant-pigment complex of said second ink.
Claim 35
Dependent Claim
16 words
The method of claim 32 wherein said dispersant-pigment complex of said second ink comprises carbon black.
Claim 36
Dependent Claim
13 words
The method of claim 32 wherein said flocculating dye comprises no anionic groups.
Claim 37
Dependent Claim
15 words
The method of claim 32 wherein said flocculating dye comprises at least one quarternary nitrogen.
Claim 38
Dependent Claim
17 words
The method of claim 32 wherein said flocculating dye comprises a reactive dye with a quarternary group.
Claim 39
Dependent Claim
41 words
The method of claim 32 wherein said first ink comprises about 0.5-6% by weight flocculating dye, 5-25% by weight humectant, 0.05-10% by weight penetrant, 0-5% by weight additional cationic material and 0.1-0.5% by weight biocide and a balance which is solvent.
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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) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |