Latent electrostatic image developing toner
US-9285695-B2 · Mar 15, 2016 · US
Toner and method of manufacturing same
US9488926B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9488926-B2 |
| Application number | US-201414539193-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 12, 2014 |
| Priority date | Nov 21, 2013 |
| Publication date | Nov 8, 2016 |
| Grant date | Nov 8, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A toner includes a plurality of toner particles that each include a toner mother particle and an external additive adhering to a surface of the toner mother particle. The toner mother particle includes a core and a shell layer disposed over a surface of the core. The external additive contains silica particles. The toner mother particle has a hydrophobicity of at least 0% and less than 20%. The external additive has a hydrophobicity of at least 5% and no greater than 20%. The hydrophobicity of the toner mother particle is less than the hydrophobicity of the external additive.
First claim
Opening claim text (preview).
What is claimed is: 1. A toner comprising a plurality of toner particles each including: a toner mother particle; and an external additive adhering to a surface of the toner mother particle, wherein the toner mother particle includes a core and a shell layer disposed over a surface of the core, the external additive contains silica particles having alkylsilane groups and aminosilane groups, the toner mother particle has a hydrophobicity of at least 0% and less than 20%, the hydrophobicity of the toner mother particle being represented by a volume percentage of methanol in a methanol-water mixture when the toner mother particle becomes entirely wetted in a methanol titration test, the external additive has a hydrophobicity of at least 5% and no greater than 20%, the hydrophobicity of the external additive being represented by a volume percentage of methanol in a methanol-water mixture when the external additive becomes entirely wetted in a methanol titration test, and the hydrophobicity of the toner mother particle is lower than the hydrophobicity of the external additive. 2. A toner according to claim 1 , wherein a difference in hydrophobicity between the alkylsilane groups and the aminosilane groups is at least 0% and no greater than 5%. 3. A toner according to claim 1 , wherein the shell layer contains a thermosetting resin. 4. A toner according to claim 1 , wherein the shell layer contains a urea resin. 5. A toner according to claim 4 , wherein the urea resin includes a methylol urea resin. 6. A toner according to claim 1 , wherein the shell layer contains a melamine resin.
Assignees
Inventors
Classifications
treated with organic compounds · CPC title
Silicon-oxides; Silicates · CPC title
- G03G9/1139Primary
Inorganic components of coatings · CPC title
Preparation thereof · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9488926B2 cover?
- A toner includes a plurality of toner particles that each include a toner mother particle and an external additive adhering to a surface of the toner mother particle. The toner mother particle includes a core and a shell layer disposed over a surface of the core. The external additive contains silica particles. The toner mother particle has a hydrophobicity of at least 0% and less than 20%. The…
- Who is the assignee on this patent?
- Kyocera Document Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification G03G9/1139. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 08 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).