Toner and two-component developer
US-2024337960-A1 · Oct 10, 2024 · US
Toner, developer, and image forming apparatus
US9442403B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9442403-B2 |
| Application number | US-201314421071-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 30, 2013 |
| Priority date | Sep 10, 2012 |
| Publication date | Sep 13, 2016 |
| Grant date | Sep 13, 2016 |
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- Title
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Abstract
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Provided is a toner, including: a crystalline resin; and a colorant, wherein the toner has a sea island structure in which a crystal region containing the crystalline resin is formed as a sea, and a non-crystalline region containing the colorant is formed as an island.
First claim
Opening claim text (preview).
The invention claimed is: 1. A toner, comprising: a crystalline resin; and a colorant, wherein the toner has a sea island structure in which a crystal region comprising the crystalline resin is formed as a sea, and a non-crystalline region comprising the colorant is formed as an island, wherein the island has a domain diameter of from 1.1 μm to 2.0 μm, and wherein the toner has a storage elastic modulus at 160° C. of from 1.0×10 3 Pa to 1.6×10 4 Pa. 2. The toner according to claim 1 , wherein a degree of crystallization of the toner is 12% or more. 3. The toner according to claim 1 , wherein the toner has a storage elastic modulus at 160° C. of from 5.0×10 3 Pa to 1.0×10 4 Pa. 4. The toner according to claim 1 , wherein the island has a domain diameter of from 1.1 μm to 1.5 μm. 5. The toner according to claim 1 , wherein the crystalline resin comprises a resin comprising a polyester unit. 6. The toner according to claim 1 , wherein the crystalline resin comprises a resin comprising a urethane bond, a urea bond, or both in a main chain thereof. 7. The toner according to claim 6 , wherein the crystalline resin comprises a copolymer comprising a polyester unit, and either a polyurethane unit or a poly-urea unit. 8. The toner according to claim 1 , further comprising: a block copolymer comprising a crystalline block and a non-crystalline block. 9. The toner according to claim 8 , wherein the block copolymer is poorly soluble in ethyl acetate. 10. The toner according to claim 1 , wherein the crystalline resin comprises a first crystalline resin, and a second crystalline resin having a weight average molecular weight larger than that of the first crystalline resin. 11. A developer, comprising: a toner, wherein the toner comprises: a crystalline resin; and a colorant, wherein the toner has a sea island structure in which a crystal region comprising the crystalline resin is formed as a sea, and a non-crystalline region comprising the colorant is formed as an island, wherein the island has a domain diameter of from 1.1 μm to 2.0 μm, and wherein the toner has a storage elastic modulus at 160° C. of from 1.0×10 3 Pa to 1.6×10 4 Pa.
Assignees
Inventors
Classifications
- G03G9/08755Primary
Polyesters · CPC title
characterised by the dimensions of the particles · CPC title
characterised by their structure; characterised by non-homogenuous distribution of components (microcapsular toners G03G9/093) · CPC title
characterised by physical parameters (magnetic parameters G03G9/083) · CPC title
Block polymers · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9442403B2 cover?
- Provided is a toner, including: a crystalline resin; and a colorant, wherein the toner has a sea island structure in which a crystal region containing the crystalline resin is formed as a sea, and a non-crystalline region containing the colorant is formed as an island.
- Who is the assignee on this patent?
- Miyaake Azumi, Suzuki Kazumi, Shiba Masana, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification G03G9/08755. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 13 2016 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).