Stabilizing aqueous inkjet ink compositions
US-2024400846-A1 · Dec 5, 2024 · US
Ink composition for inkjet recording, inkjet recording method, and inkjet recorded material
US8945294B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8945294-B2 |
| Application number | US-201213611764-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 12, 2012 |
| Priority date | Sep 16, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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An ink composition having organic pigment particles, a hydrosoluble solvent; a dispersing agent, and water, wherein each of the organic pigment particles has a circularity of 2 nm or less, which is defined as a difference between radii of concentric circumscribing and inscribed circles of a contour of an image of each of the organic pigment particles taken by a transmission electron microscope when a gap between the concentric circumscribing circle and the inscribed circle is least, wherein the inscribed circle has a diameter of from 5 nm to less than 50 nm.
First claim
Opening claim text (preview).
What is claimed is: 1. An ink composition comprising: organic pigment particles; wherein an organic pigment of the organic pigment particles is selected from the group consisting of α crystalline type metal free phthalocyanine, α crystalline type copper phthalocyanine, copper phthalocyanine modified by chlorine or bromine, quinacridone modified by methyl or chlorine, and diketopyrrolo pyrrole modified by methyl or chlorine; a hydrosoluble solvent; a dispersing agent; and wat…
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Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
- C09D11/326Primary
Chemistry & Metallurgy · mapped topic
- B23B3/10Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8945294B2 cover?
- An ink composition having organic pigment particles, a hydrosoluble solvent; a dispersing agent, and water, wherein each of the organic pigment particles has a circularity of 2 nm or less, which is defined as a difference between radii of concentric circumscribing and inscribed circles of a contour of an image of each of the organic pigment particles taken by a transmission electron microscope …
- Who is the assignee on this patent?
- Matsuyama Akihiko, Goto Hiroshi, Ricoh Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09D11/326. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).