Magnetic toner
US-10859933-B2 · Dec 8, 2020 · US
Toner
US9250548B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9250548-B2 |
| Application number | US-201414339689-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 24, 2014 |
| Priority date | Jul 31, 2013 |
| Publication date | Feb 2, 2016 |
| Grant date | Feb 2, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The toner comprises: toner particles each containing a binder resin and a releasing agent; and an organic-inorganic composite fine particle, wherein: the organic-inorganic composite fine particle comprises: a vinyl resin particle containing a vinyl resin, the vinyl resin containing THF-insoluble matter in an amount of 95% by mass or more; and inorganic fine particles which are exposed at surfaces of the respective organic-inorganic composite fine particles, the organic-inorganic composite fine particle 1) has a plurality of convexes derived from the inorganic fine particles on the surfaces thereof, 2) has a number average particle size of 70-500 nm, and 3) has a shape factor SF-2 as measured at a magnification of 200,000 times of 103-120, and an absolute value of difference between an SP value of the releasing agent and an SP value of the vinyl resin is 0.50 (cal/cm 3 ) 1/2 or less.
First claim
Opening claim text (preview).
What is claimed is: 1. A toner, comprising: toner particles each containing a binder resin and a releasing agent; and an organic-inorganic composite fine particle, wherein: the organic-inorganic composite fine particle comprises: a vinyl resin particle containing a vinyl resin, the vinyl resin containing THF-insoluble matter in an amount of 95% by mass or more; and inorganic fine particles which are exposed at surfaces of the respective organic-inorganic composite fine particles, the organic-inorganic composite fine particle 1) has a plurality of convexes derived from the inorganic fine particles on the surfaces thereof, 2) has a number average particle size of 70 nm or more and 500 nm or less, and 3) has a shape factor SF-2 as measured at a magnification of 200,000 times of 103 or more and 120 or less; and wherein an absolute value of a difference between an SP value of the releasing agent and an SP value of the vinyl resin is 0.50 (cal/cm 3 ) 1/2 or less. 2. The toner according to claim 1 , wherein the organic-inorganic composite fine particle has a shape factor SF-1 as measured at a magnification of 200,000 times of 110 or more and 140 or less.
Assignees
Inventors
Classifications
Silicon-oxides; Silicates · CPC title
Waxes · CPC title
- G03G9/0838Primary
Size of magnetic components · CPC title
Structural characteristics of the magnetic components, e.g. shape, crystallographic structure · CPC title
Post-treatment · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9250548B2 cover?
- The toner comprises: toner particles each containing a binder resin and a releasing agent; and an organic-inorganic composite fine particle, wherein: the organic-inorganic composite fine particle comprises: a vinyl resin particle containing a vinyl resin, the vinyl resin containing THF-insoluble matter in an amount of 95% by mass or more; and inorganic fine particles which are exposed at surfac…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G03G9/0838. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 02 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).