JP2013257415A5

JP2013257415A5 -

Info

Publication number: JP2013257415A5
Application number: JP2012132866A
Authority: JP
Filing date: 2012-06-12
Publication date: 2015-07-30

Description

上記課題を解決するため、本発明においては、重合性単量体、着色剤、離型剤と結晶性ポリエステルを少なくとも含有する重合性単量体組成物を調製し、水系媒体中で、前記重合性単量体組成物に含有される前記重合性単量体を重合することにより得られるトナー粒子と、無機微粒子とを有するトナーであって、
前記トナーは、細管式レオメーターを用いて測定される流出開始温度、および軟化温度に関し、以下のｉ）およびｉｉ）の規定
ｉ）流出開始温度が８５℃以下である、
ｉｉ）流出開始温度と軟化温度との差（流出開始温度−軟化温度）が１５〜２５℃である、
を満たすことを特徴とするトナーに関するものである。 To solve the above problems, the present invention, a polymerizable monomer, a colorant, to prepare a release agent and a polymerizable monomer composition containing at least a crystalline polyester, in an aqueous medium, the polymerizable A toner having toner particles obtained by polymerizing the polymerizable monomer contained in the polymerizable monomer composition, and inorganic fine particles,
The toner is defined in terms of the following i) and ii) with respect to the outflow start temperature measured using a capillary tube rheometer and the softening temperature.
i) Outflow start temperature is 85 ° C. or lower,
ii) The difference between the outflow start temperature and the softening temperature (outflow start temperature−softening temperature) is 15 to 25 ° C.,
It relates toner, wherein the full was Succoth.

Claims

Polymerizable monomer, a colorant, a polymerizable monomer composition containing at least a releasing agent and the crystalline polyester was prepared, in an aqueous medium, the polymerizable contained in the polymerizable monomer composition A toner having toner particles obtained by polymerizing a polymerizable monomer and inorganic fine particles,
The toner is defined in terms of the following i) and ii) with respect to the outflow start temperature measured using a capillary tube rheometer and the softening temperature.
i) Outflow start temperature is 85 ° C. or lower,
ii) The difference between the outflow start temperature and the softening temperature (outflow start temperature−softening temperature) is 15 to 25 ° C.,
Toner, wherein the full was Succoth.

The toner in the molecular weight distribution measured by gel permeation chromatography, has a peak at 5,000 or more than 15,000, the toner according to claim 1.

The crystalline polyester is a peak temperature of maximum endothermic peak measured by a differential scanning calorimeter is 50 ° C. or higher 120 ° C. or less, the heat absorption amount of the maximum endothermic peak is 30.0J / g or more 150.0J / g or less, toner according to claim 1 or 2.

When the cross section of the toner is observed with ruthenium dyeing, the crystalline polyester having a length La of 1000 nm or less, a width Lb of 50 nm or less, and a ratio La / Lb of the length La to the width Lb of 10 or more. The toner according to claim 1 , wherein a thread-like substance derived therefrom is observed .

The toner particles, the core particles produced by suspension polymerization method, and a shell formed by the surface of the core particles are fixed to the resin fine particles, according to any one of claims 1 to 4 Toner.