JP2012083440A5

JP2012083440A5 -

Info

Publication number: JP2012083440A5
Application number: JP2010227977A
Authority: JP
Filing date: 2010-10-07
Publication date: 2013-11-21
Anticipated expiration: 2030-10-07

Description

上記目的を達成するため、本出願に係る発明は、重合性単量体、ワックス、着色剤Ａ、着色剤Ｂ、極性樹脂Ａ及び極性樹脂Ｂを含有する重合性単量体組成物を水系媒体に加え、前記水系媒体中で前記重合性単量体組成物の粒子を形成し、前記粒子に含まれる前記重合性単量体を重合させて得られるトナー粒子を含有するマゼンタトナーにおいて、前記着色剤Ａがキナクリドン系顔料であり、前記着色剤Ｂがナフトール系顔料であり、前記極性樹脂Ａがポリエステル樹脂であり、前記極性樹脂Ｂがカルボキシ基含有スチレン系樹脂であり、前記極性樹脂Ｂのテトラヒドロフラン（ＴＨＦ）可溶分のゲルパーミエーションクロマトグラフィーにより測定された重量平均分子量（Ｍｗ）が８０００〜５００００であることを特徴とする。 To achieve the above object, the invention according to this application, a polymerizable monomer, a wax, a colorant A, colorant B, the polar resin A and a polar resin B containing a polymerizable monomer composition an aqueous medium in addition, the particles formed in an aqueous medium the polymerizable monomer composition, in the magenta toner containing the toner particles obtained by the polymerizable monomer is polymerized contained in the particles, the colored Agent A is a quinacridone pigment, Colorant B is a naphthol pigment, Polar resin A is a polyester resin, Polar resin B is a carboxy group-containing styrene resin, and tetrahydrofuran of polar resin B The weight-average molecular weight (Mw) measured by gel permeation chromatography of (THF) soluble matter is 8000 to 50000.

Claims

Polymerizable monomer, a wax, a colorant A, colorant B, a polymerizable monomer composition having containing a polar resin A and a polar resin B was added to the aqueous medium, the polymerizable monomer in the aqueous medium compositions to form particles, in the magenta toner containing the toner particles obtained by the polymerizable monomer is polymerized contained in the particles,
The colorant A is a quinacridone pigment,
The colorant B is a naphthol pigment,
The polar resin A is a polyester resin,
The polar resin B is a carboxy group-containing styrene resin,
A magenta toner, wherein the polar resin B has a weight average molecular weight (Mw) measured by gel permeation chromatography of a tetrahydrofuran (THF) soluble part of the polar resin B from 8000 to 50000.

Magenta toner according to the polarity acid value of the resin B is 5.0 ~ 30.0 mg KOH / g Der Ru請 Motomeko 1.

A hydroxyl value of 5.0 ~ 25.0 mg KOH / g Der Ru magenta toner according to 請 Motomeko 1 or 2 of the polar resin B.

Magenta toner according to any one of the polar resin A acid value the polarity smaller than the acid value of the resin B I請 Motomeko 1-3.

In the polar resin B, in the molecular weight distribution measured by gel permeation chromatography, the acid value of the low molecular weight component eluted after the elution time at which the peak molecular weight (Mp) is obtained is α (mg KOH / g) , and the peak molecular weight when the acid value of the high molecular weight component eluted before (Mp) become elution time was β (mgKOH / g), Ru 0.80 ≦ α / β ≦ 1.20 der 請 Motomeko 1-4 The magenta toner according to any one of the above.