JP2017102395A5

JP2017102395A5 -

Info

Publication number: JP2017102395A5
Application number: JP2015237661A
Authority: JP
Filing date: 2015-12-04
Publication date: 2019-01-24
Anticipated expiration: 2035-12-04

Description

結着樹脂、離型剤及び着色剤を含有するトナー粒子を有するトナーであって、
走査透過型電子顕微鏡により観察したトナー断面において、
該離型剤がドメインを形成しており、
該トナー断面の長径をＲ（μｍ）とし、
該トナー断面に存在する該離型剤のドメインの長径をｒとし、
該離型剤のドメインのうち、ｒ／Ｒが０．１２５≦ｒ／Ｒ≦０．３７５のドメインをドメインＡとし、ｒ／Ｒが０．０００６２５≦ｒ／Ｒ≦０．０６２５のドメインをドメインＢとしたときに、
該トナー断面の長径Ｒの相加平均値が４≦Ｒ≦１２を満たし、
該トナー断面において該ドメインＡの占める面積の割合をＳＡ、該ドメインＢの占める
面積の割合をＳＢとしたときに、下記式（１）及び（２）を満たし、
２．５％≦ＳＡ≦３０％（１）
０．１≦ＳＢ／ＳＡ≦０．８（２）
該トナー断面における該ドメインＢのアスペクト比が０．３以下であることを特徴とするトナー。 A toner having toner particles containing a binder resin, a release agent and a colorant,
In the toner cross section observed with a scanning transmission electron microscope,
The release agent forms a domain;
The major axis of the cross section of the toner is R (μm),
R is the major axis of the release agent domain present in the cross section of the toner,
Among the domains of the release agent, a domain having r / R of 0.125 ≦ r / R ≦ 0.375 is defined as domain A, and a domain having r / R of 0.000625 ≦ r / R ≦ 0.0625 is defined as domain. When B
The arithmetic mean value of the major axis R of the cross section of the toner satisfies 4 ≦ R ≦ 12,
When the ratio of the area occupied by the domain A in the cross section of the toner is SA and the ratio of the area occupied by the domain B is SB, the following expressions (1) and (2) are satisfied:
2.5% ≦ SA ≦ 30% (1)
0.1 ≦ SB / SA ≦ 0.8 (2)
A toner having an aspect ratio of the domain B in a cross section of the toner of 0.3 or less.

Claims

A toner having toner particles containing a binder resin, a release agent and a colorant,
In the toner cross section observed with a scanning transmission electron microscope,
The release agent forms a domain;
The major axis of the cross section of the toner is R (μm),
R is the major axis of the release agent domain present in the cross section of the toner,
Among the domains of the release agent, a domain having r / R of 0.125 ≦ r / R ≦ 0.375 is defined as domain A, and a domain having r / R of 0.000625 ≦ r / R ≦ 0.0625 is defined as domain. When B
The arithmetic mean value of the major axis R of the cross section of the toner satisfies 4 ≦ R ≦ 12,
When the ratio of the area occupied by the domain A in the cross section of the toner is SA and the ratio of the area occupied by the domain B is SB, the following expressions (1) and (2) are satisfied:
2.5% ≦ SA ≦ 30% (1)
0.1 ≦ SB / SA ≦ 0.8 (2)
A toner having an aspect ratio of the domain B in a cross section of the toner of 0.3 or less.