Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus
US-11906928-B2 · Feb 20, 2024 · US
Toner and developer
US9618862B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9618862-B2 |
| Application number | US-201514615911-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 6, 2015 |
| Priority date | Feb 19, 2014 |
| Publication date | Apr 11, 2017 |
| Grant date | Apr 11, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A toner is provided. The toner includes a binder resin and a release agent. The release agent has an average aspect ratio of 31 or more, when the average aspect ratio is determined from cross-sectional images of the toner observed with a transmission electron microscope (TEM).
First claim
Opening claim text (preview).
What is claimed is: 1. A toner, comprising: a binder resin; and a release agent having an average aspect ratio of 31 or more, the average aspect ratio determined from cross-sectional images of the toner observed with a transmission electron microscope (TEM). 2. The toner according to claim 1 , wherein the release agent has a melting point of 65° C. or more. 3. The toner according to claim 1 , wherein the release agent is a wax, wherein a content of the wax in the toner is from 1% to 20% by weight, the content being converted from an endothermic quantity of the toner determined by a differential scanning calorimetry (DSC), and wherein an amount of the wax existing in a region ranging from a surface to 0.3 μm in depth of the toner is from 0.1% to 4% by weight, the amount being determined by an attenuated total reflection infrared spectroscopy (FTIR-ATR). 4. The toner according to claim 1 , wherein the toner has a volume average particle diameter of from 1 to 8 μm and a particle size distribution of from 1.00 to 1.15, the particle size distribution being a ratio of the volume average particle diameter to a number average particle diameter of the toner. 5. The toner according to claim 1 , wherein the toner has a volume-based particle size distribution in which a second peak is observed at a particle diameter from 1.21 to 1.31 times a model diameter. 6. A two-component developer, comprising: the toner according to claim 1 ; and a carrier. 7. The toner according to claim 1 , wherein a longest domain of the release agent has a length, Lmax, and wherein Lmax is greater than or equal to 1.1 times the Feret diameter of the toner. 8. The toner according to claim 7 , wherein Lmax is from 1.2 to 1.6 times the Feret diameter of the toner.
Assignees
Inventors
Classifications
Waxes · CPC title
with esters of acrylic or methacrylic acid · CPC title
Polymers of nitriles · CPC title
- G03G9/0819Primary
characterised by the dimensions of the particles · CPC title
Polyethers · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9618862B2 cover?
- A toner is provided. The toner includes a binder resin and a release agent. The release agent has an average aspect ratio of 31 or more, when the average aspect ratio is determined from cross-sectional images of the toner observed with a transmission electron microscope (TEM).
- Who is the assignee on this patent?
- Moriya Yoshihiro, Ishikawa Masahiko, Inoue Ryota, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification G03G9/0819. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 11 2017 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).