Methods of printing and electrostatic ink compositions
US-2015338757-A1 · Nov 26, 2015 · US
Electrostatic image developing toner
US9983495B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9983495-B2 |
| Application number | US-201615278647-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 28, 2016 |
| Priority date | Jan 27, 2016 |
| Publication date | May 29, 2018 |
| Grant date | May 29, 2018 |
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Abstract
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An electrostatic image developing toner including a toner particle, wherein the toner particle contains a vinyl resin which is a polymer of a vinyl monomer having an acid group, a polyester resin, at least one of aluminum (Al) and magnesium (Mg), and tin (Sn), and when net intensities of Al, Mg and Sn in the toner particle measured by fluorescent X-ray analysis are respectively expressed as I Al , I Mg and I Sn , a ratio (I Al +I Mg )/I Sn is within a range of 0.5 to 2.5.
First claim
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What is claimed is: 1. An electrostatic image developing toner comprising a toner particle, wherein the toner particle comprises a binder resin comprising a vinyl resin which is a polymer of a vinyl monomer having an acid group, and a polyester resin, a content of the vinyl resin in the toner particle is within a range of 20 to 60 mass % by mass binder resin, the toner particle further comprises tin (Sn) and at least one of aluminum (Al) and magnesium (Mg), and a ratio (I Al +I Mg )/I Sn is within a range of 0.5 to 2.5, when net intensities of Al, Mg and Sn in the toner particle measured by fluorescent X-ray analysis are respectively expressed as I Al , I Mg and I Sn . 2. The electrostatic image developing toner according to claim 1 , wherein the ratio (I Al +I Mg )/I Sn is within a range of 0.8 to 2.5. 3. The electrostatic image developing toner according to claim 1 , wherein a sum (I Al +I Mg +I Sn ) of the net intensities of Al, Mg and Sn is 3.5 kcps or more. 4. The electrostatic image developing toner according to claim 1 , wherein, the toner particle contains Al and does not contain Mg, and the net intensity I Al of Al is within a range of 2.0 to 6.0 kcps. 5. The electrostatic image developing toner according to claim 1 , wherein, the toner particle contains Mg and does not contain Al, and the net intensity I Mg of Mg is within a range of 1.0 to 3.5 kcps. 6. The electrostatic image developing toner according to claim 1 , wherein the content of the vinyl resin in the toner particle is within a range of 35 to 60 mass % by mass binder resin. 7. The electrostatic image developing toner according to claim 1 , wherein the vinyl resin is a styrene-acrylic resin. 8. The electrostatic image developing toner according to claim 1 , wherein the polyester resin comprises a crystalline polyester resin and an amorphous polyester resin.
Assignees
Inventors
Classifications
characterised by their physical properties, e.g. viscosity, solubility, melting temperature, softening temperature, glass transition temperature · CPC title
Copolymers of styrene · CPC title
- G03G9/087Primary
Binders for toner particles · CPC title
with toner particles · CPC title
- G03G9/08755Primary
Polyesters · CPC title
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Frequently asked questions
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- What does patent US9983495B2 cover?
- An electrostatic image developing toner including a toner particle, wherein the toner particle contains a vinyl resin which is a polymer of a vinyl monomer having an acid group, a polyester resin, at least one of aluminum (Al) and magnesium (Mg), and tin (Sn), and when net intensities of Al, Mg and Sn in the toner particle measured by fluorescent X-ray analysis are respectively expressed as I A…
- Who is the assignee on this patent?
- Konica Minolta Inc
- What technology area does this patent fall under?
- Primary CPC classification G03G9/087. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 29 2018 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).