Electrophotographic toner and method for producing the same

US9500969B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9500969-B2
Application numberUS-201514731687-A
CountryUS
Kind codeB2
Filing dateJun 5, 2015
Priority dateOct 5, 2010
Publication dateNov 22, 2016
Grant dateNov 22, 2016

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Abstract

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Disclosed here is a method for producing a decolorizable electrophotographic toner, comprising mixing a first dispersion liquid in which a colorant is dispersed in an amount such that the content of the colorant in the toner is from 5% to 35% by weight, with a second dispersion liquid in which particles containing at least a binder resin and having a volume average particle diameter of 500 nm or less are dispersed, aggregating the colorant and the particles containing at least the binder resin, thereby obtaining aggregated particles, fusing the aggregated particles at a temperature lower than a completely decolorizing temperature of the colorant to obtain the toner, and measuring the number ratio of particles having an equivalent circle diameter of 0.6 μm or more and 2.5 μm or less of the toner using a flow particle image analyzer after the toner is subjected to a stirring treatment.

First claim

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What is claimed is: 1. A method for producing a decolorizable electrophotographic toner, comprising: mixing a first dispersion liquid in which a colorant is dispersed in an amount such that the content of the colorant in the toner is from 5% to 35% by weight, with a second dispersion liquid in which particles containing at least a binder resin and having a volume average particle diameter of 500 nm or less are dispersed, wherein the colorant contains at least a color developable c…

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What does patent US9500969B2 cover?
Disclosed here is a method for producing a decolorizable electrophotographic toner, comprising mixing a first dispersion liquid in which a colorant is dispersed in an amount such that the content of the colorant in the toner is from 5% to 35% by weight, with a second dispersion liquid in which particles containing at least a binder resin and having a volume average particle diameter of 500 nm o…
Who is the assignee on this patent?
Toshiba Tec Kk, Kk Pilot Corp, Pilot Ink Co Ltd
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 Nov 22 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).