Inks for liquid electrophotography
US-9547248-B2 · Jan 17, 2017 · US
Electrostatic ink composition
US2022011688A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022011688-A1 |
| Application number | US-201917431506-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 27, 2019 |
| Priority date | Sep 27, 2019 |
| Publication date | Jan 13, 2022 |
| Grant date | — |
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Abstract
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Described herein is a yellow liquid electrophotographic ink composition comprising: a thermoplastic resin comprising a polymer having acidic side groups; and a colorant comprising a yellow pigment, wherein the yellow pigment comprises a hydrazone compound. Also described herein is a method of producing a printed substrate using the yellow liquid electrophotographic ink composition and a printed substrate produced therefrom.
First claim
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1 . A yellow liquid electrophotographic ink composition comprising: a thermoplastic resin comprising a polymer having acidic side groups; and a colorant comprising a yellow pigment, wherein the yellow pigment comprises a hydrazone compound. 2 . The yellow liquid electrophotographic ink composition according to claim 1 , wherein the yellow pigment consists of a hydrazone compound. 3 . The yellow liquid electrophotographic ink composition according to claim 1 , wherein the yellow pigment comprises a hydrazone compound of Formula Ia: wherein R 1 to R 6 are each independently selected from a hydrogen atom, a C1 to C3 alkyl group, a C1 to C3 alkoxy group, a nitro group and a halogen group. 4 . The yellow liquid electrophotographic ink composition according to claim 3 , wherein at least one of R 1 to R 3 is a nitro group. 5 . The yellow liquid electrophotographic ink composition according to claim 4 , wherein a nitro group is para to the hydrazone group. 6 . The yellow liquid electrophotographic ink composition according to claim 3 , wherein at least one of R 1 to R 6 is a methoxy group. 7 . The yellow liquid electrophotographic ink composition according to claim 6 , wherein at least one of R 1 to R 3 is a nitro group. 8 . The yellow liquid electrophotographic ink composition according to claim 1 , wherein the yellow pigment comprises a hydrazone compound of Formula II: 9 . The yellow liquid electrophotographic ink composition according to claim 1 , wherein the colorant is present in an amount of up to about 30 wt. % of the non-volatile solids of the yellow liquid electrophotographic ink composition. 10 . The yellow liquid electrophotographic ink composition according to claim 1 , wherein the colorant is present in an amount of from about 15 wt. % to about 35 wt. % of the non-volatile solids of the yellow liquid electrophotographic ink composition. 11 . The yellow liquid electrophotographic ink composition according to claim 1 , wherein the polymer having acidic side groups is a copolymer of an alkylene monomer and a monomer selected from acrylic acid and methacrylic acid. 12 . The yellow liquid electrophotographic ink composition according to claim 1 , wherein the yellow pigment consists of a hydrazone compound of formula II 13 . A printed substrate comprising a substrate; and a yellow liquid electrophotographically printed ink composition disposed thereon; wherein the yellow liquid electrophotographically printed ink composition comprises: a thermoplastic resin comprising a polymer having acidic side groups; and a colorant comprising a yellow pigment, wherein the yellow pigment comprises a hydrazone compound. 14 . The printed substrate according to claim 13 , wherein the colorant comprises a hydrazone compound of Formula Ia: wherein R 1 to R 6 are each independently selected from a hydrogen atom, a C1 to C3 alkyl group, a C1 to C3 alkoxy group, a nitro group and a halogen group. 15 . A method of producing a printed substrate comprising: applying a yellow liquid electrophotographic ink composition to a substrate with a liquid electrophotographic printer; wherein the yellow liquid electrophotographic ink composition comprises: a thermoplastic resin comprising a polymer having acidic side groups; and a colorant comprising a yellow pigment, wherein the yellow pigment comprises a hydrazone compound.
Assignees
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Classifications
Pigment inks · CPC title
- G03G9/0924Primary
Dyes characterised by specific substituents · CPC title
of organic pigments with only macromolecular substances · CPC title
Electrically conductive inks · CPC title
based on artificial resins · CPC title
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- What does patent US2022011688A1 cover?
- Described herein is a yellow liquid electrophotographic ink composition comprising: a thermoplastic resin comprising a polymer having acidic side groups; and a colorant comprising a yellow pigment, wherein the yellow pigment comprises a hydrazone compound. Also described herein is a method of producing a printed substrate using the yellow liquid electrophotographic ink composition and a printed…
- Who is the assignee on this patent?
- Hewlett Packard Development Co
- What technology area does this patent fall under?
- Primary CPC classification G03G9/0924. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Jan 13 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).