Toner compositions for single component development system
US-9164410-B2 · Oct 20, 2015 · US
Toner for developing electrostatically charged images
US2016313661A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016313661-A1 |
| Application number | US-201615087210-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 31, 2016 |
| Priority date | Apr 22, 2015 |
| Publication date | Oct 27, 2016 |
| Grant date | — |
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Abstract
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A particulate toner for developing electrostatically charged image includes a binder resin, a colorant, a mold release agent and a plasticizer. The binder resin comprises a styrene-acrylic resin. A relationship represented by Expression Ac<Aw is satisfied. Aw represents the average aspect ratio of domains of the mold release agent in a cross section of the particulate toner. Ac represents the average aspect ratio of domains of the plasticizer.
First claim
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What is claimed is: 1 . A particulate toner for developing electrostatically charged image, comprising: a binder resin, a colorant, a mold release agent, and a plasticizer, wherein the binder resin comprises a styrene-acrylic resin, and a relationship represented by Expression (1) is satisfied: Ac<Aw (1) where Aw represents an average aspect ratio of domains of the mold release agent, and Ac represents an average aspect ratio of domains of the plasticizer in a cross section of the particulate toner. 2 . The toner for developing electrostatically charged image according to claim 1 , wherein the binder resin comprises 30 mass % or more styrene-acrylic resin. 3 . The toner for developing electrostatically charged image according to claim 1 , wherein relationships represented by Expressions (2) and (3) are satisfied: 1.5≦Aw≦6.0 (2) 1.0≦Ac≦3.0 (3) where Aw represents the average aspect ratio of the domains of the mold release agent, and Ac represents the average aspect ratio of the domains of the plasticizer in the cross section of the particulate toner. 4 . The toner for developing electrostatically charged image according to claim 1 , where the mold release agent comprises a microcrystalline wax. 5 . The toner for developing electrostatically charged image according to claim 1 , wherein the plasticizer comprises a crystalline polyester resin. 6 . The toner for developing electrostatically charged image according to claim 1 , wherein the plasticizer comprises a hybrid resin comprising a crystalline polyester resin unit and an amorphous resin unit bonded to each other. 7 . The toner for developing electrostatically charged image according to claim 6 , wherein the amorphous resin unit comprises a styrene-acrylic resin unit, and a content of the styrene-acrylic resin unit is 20 mass % or less of that of the hybrid resin. 8 . The toner for developing electrostatically charged image according to claim 1 , wherein a content of the mold release agent and a content of the plasticizer are each within a range of 5 to 20 mass % of a total amount of the particulate toner excluding the colorant. 9 . The toner for developing electrostatically charged image according to claim 1 , wherein the domains of the mold release agent and the domains of the plasticizer are independently present.
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Classifications
- G03G9/09733Primary
Organic compounds (G03G9/08782 takes precedence) · CPC title
with esters of acrylic or methacrylic acid · CPC title
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- What does patent US2016313661A1 cover?
- A particulate toner for developing electrostatically charged image includes a binder resin, a colorant, a mold release agent and a plasticizer. The binder resin comprises a styrene-acrylic resin. A relationship represented by Expression Ac<Aw is satisfied. Aw represents the average aspect ratio of domains of the mold release agent in a cross section of the particulate toner. Ac represents the a…
- Who is the assignee on this patent?
- Konica Minolta Inc
- What technology area does this patent fall under?
- Primary CPC classification G03G9/09733. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Oct 27 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).