Toner and method of producing the toner
US-2015378271-A1 · Dec 31, 2015 · US
Process for producing electrophotographic toner
US9529290B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9529290-B2 |
| Application number | US-201314432884-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 4, 2013 |
| Priority date | Oct 5, 2012 |
| Publication date | Dec 27, 2016 |
| Grant date | Dec 27, 2016 |
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Abstract
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The present invention relates to a process for producing a toner for electrophotography which is capable of suppressing liberation of a wax from a resin binder and exposure of the wax to a surface of respective toner particles in the step of obtaining fused particles upon production of the toner, and reducing a content of fine powders in the toner, and which is characterized by an excellent low-temperature fusing property and an excellent anti-high-temperature offset property. The process for producing a toner for electrophotography according to the present invention includes the following steps 1 to 3: Step 1 of mixing and emulsifying a wax, a resin emulsion containing a resin having an acid value of from 10 to 300 mgKOH/g, and an oxazoline group-containing polymer with each other to obtain a water dispersion of releasing agent particles; Step 2 of mixing and aggregating the water dispersion of the releasing agent particles obtained in the step 1 with a water dispersion of resin particles containing a carboxyl group-containing resin binder to obtain aggregated particles; and Step 3 of fusing the aggregated particles obtained in the step 2 to obtain fused particles.
First claim
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The invention claimed is: 1. A process for producing a toner for electrophotography, the process comprising: mixing and emulsifying a wax, a resin emulsion containing a resin having an acid value of from 10 to 300 mgKOH/g, and an oxazoline group-containing polymer with each other to obtain a water dispersion of releasing agent particles; mixing and aggregating the water dispersion of the releasing agent particles obtained in the mixing and emulsifying with a water dispersion of…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US9529290B2 cover?
- The present invention relates to a process for producing a toner for electrophotography which is capable of suppressing liberation of a wax from a resin binder and exposure of the wax to a surface of respective toner particles in the step of obtaining fused particles upon production of the toner, and reducing a content of fine powders in the toner, and which is characterized by an excellent low…
- Who is the assignee on this patent?
- Kao Corp
- What technology area does this patent fall under?
- Primary CPC classification G03G9/081. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 27 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).