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US 7,001,934 B2Granted
Inkjet ink systems comprising a gelling agent
AssigneeCabot Coroporation
InventorLev Bromberg
Life of this patent
Estimating the term…
Abstract
Inkjet ink systems are disclosed which comprise a) a liquid vehicle, b) a colorant, and c) a gelling agent. The gelling agent may be incorporated either into the liquid vehicle, into a second jettable composition, or onto a substrate. The gelling agent may also be attached to the colorant. In addition, several methods of generating an image are also described which utilize compositions comprising a gelling agent.
Claims37
An inkjet ink system comprising:
- a) a liquid vehicle;
- b) a colorant;
- and c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group and the gelling agent is a hydrophobically modified polyelectrolyte having a weight average molecular weight of between 300,000 and 1,500,000.
An inkjet ink system comprising:
- a) a liquid vehicle;
- b) a colorant;
- and c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group and the gelling agent is a hydrophobically modified polyelectrolyte wherein the inkjet ink system comprises inkjet ink composition and second jettable composition, and wherein the gelling agent is incorporated into the second jettable composition.
An inkjet ink system comprising:
- a) substrate and a liquid vehicle;
- b) a colorant;
- and c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group and the gelling agent is a hydrophobically modified polyelectrolyte, wherein the gelling agent is a component of the substrate or is a coating on the surface of the substrate.
A method of generating a printed image comprising the steps of:
- i) incorporating into a printing apparatus an inkjet ink composition comprising:
- a) a liquid vehicle, b) a colorant, and c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group and wherein the organic group comprises at least one ionic group, ionozable group, or mixtures thereof, and the gelling is a hydrophobically modified polyelectrolyte having a weight average molecular weight of between 300,000 and 1,500,000;
- ii) jetting the inkjet ink composition;
- and
- iii) generating an image onto a substrate, wherein the substrate optionally comprises a gelling agent.
2 more elements
A method of generating a printed image comprising the steps of:
- i) incorporating into a printing apparatus an inkjet ink composition comprising:
- a) a liquid vehicle, b) a colorant, and c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group and the gelling agent is a hydrophobically modified polyelectrolyte;
- ii) jetting the inkjet ink composition;
- and
- iii) generating an image onto a substrate, wherein the substrate optionally comprises a gelling agent,
- further comprising the step of jetting a gelling composition, wherein the gelling composition has a pH effective to cause the gelling of the image.
3 more elements
A method of generating a printed image comprising the steps of:
- i) incorporating into a printing apparatus an inkjet ink composition comprising:
- a) a liquid vehicle and b) a colorant, wherein the colorant is a modified pigment having attached at least one organic group,
- ii) incorporating into a printing apparatus a gelling agent composition comprising:
- a) a liquid vehicle and b) a gelling agent, wherein the gelling agent is a hydrophobically modified polyelectrolyte;
- iii) jetting, in any order, the inkjet ink composition and the gelling agent composition, and
- iv) generating an image onto a substrate.
3 more elements
A method of generating a printed image comprising the steps of:
- i) incorporating into a printing apparatus an inkjet ink composition comprising:
- a) a liquid vehicle and b) a colorant, wherein the colorant is a modified pigment having attached at least one organic group,
- ii) jetting the inkjet ink composition, and
- iii) generating an image onto a substrate, wherein the substrate comprises a gelling agent, wherein the gelling agent is a hydrophobically modified polyelectrolyte.
1 more element
An inkjet ink system comprising:
- a) a liquid vehicle;
- b) a colorant;
- acid c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group and the gelling agent is a hydrophobically modified terpolymer having a weight average molecular weight at between 300,000 and 1,500,000 comprising methacrylic acid monomer units, ethyl acrylate monomer units, and a hydrophobically-modified macromer units comprising α-methylstyrene monomer units and a poly(ethylene oxide) group.
An inkjet ink system comprising:
- a) a liquid vehicle;
- b) a colorant;
- and c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group having the formula —X-Sp-[Polymer]R, wherein X, which is directly attached to the pigment, represents an arylene or heteroarylene group or an alkylene group, Sp represents a spacer group. Polymer represents a polymeric group comprising repeating monomer groups, and R represents hydrogen, a bond, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, and wherein the gelling agent is hydrophobically modified polyelectrolyte having a weight average molecular weight of between 300,000 and 1,500,000.
A method of generating a printed image comprising the steps of:
- i) incorporating into a printing apparatus an inkjet ink corporation comprising:
- a) a liquid vehicle, b) a colorant, and c) a gelling agent, wherein the colorant is a modified pigment comprising a pigment having attached at least one organic group having the formula —X-Sp-[Polymer]R, wherein X, which is directly attached to the pigment, represents an arylene or heteroarylene group or an alkylene group, Sp represents a spacer group, Polymer represents a polymeric group comprising repeating monomer groups, and R represents hydrogen, a bond, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, and wherein the gelling agent is a hydrophobically modified polyelectrolyte having a weight average molecular weight of between 300,000 and 1,500,000;
- ii) jetting the inkjet ink composition;
- and
- iii) generating an image onto a substrate, wherein the substrate optionally comprises a gelling agent.
2 more elements
Dependencies are inferred from the claim text.