JP2010134253A5

JP2010134253A5 -

Info

Publication number: JP2010134253A5
Application number: JP2008310983A
Authority: JP
Filing date: 2008-12-05
Publication date: 2012-11-22
Anticipated expiration: 2028-12-05

Description

本発明者らは、鋭意検討を重ねた結果、下記の本発明の構成にすることで、上記要求を満足できることを見いだし、本発明に至った。
［１］結着樹脂、ワックス及び着色剤を少なくとも含有する微粉砕物の表面改質工程を有するトナー粒子の製造方法であって、
該表面改質工程が、表面改質装置を用いて行われ、
該表面改質装置は、
微粉砕物の中から少なくとも所定の粒径以下の微粉を装置外へ連続的に排出除去する分級手段、
機械式衝撃力を用いて微粉砕物の表面改質を行う表面改質手段、及び、
該分級手段と該表面改質手段との間の空間を第一の空間と第二の空間とに仕切る案内手段を有しており、
該分級手段は該表面改質手段の上方に設けられており、
該表面改質手段は、
水平方向に回転する回転子と、
該回転子の外縁から該回転子の回転軸に対して垂直方向に一定間隔を保持して配置された固定子とを有し、
該回転子は、その外縁上に複数のハンマーを有し、
該固定子の該回転子に対向する表面には、１本又は複数本の溝が設けられており、該溝は、回転子の回転方向の下流側に行くにつれて、固定子底部からの高さが一定若しくは高くなるように傾斜し、かつ、該溝の円周方向を示す溝方向線の、該回転子の回転軸軸線に対する角度θ１が６０度以上、９０度以下であることを特徴とするトナー粒子の製造方法。
［２］前記ハンマーの、前記回転子の回転軸の軸線方向の長さＡ（ｍｍ）と、前記固定子の、回転軸の軸線方向の長さＢ（ｍｍ）が２．０≦Ｂ／Ａ≦１５．０の関係を満たすことを特徴とする［１］に記載のトナー粒子の製造方法。
［３］微粉砕物の中から所定の粒径以下の微粉を装置外へ連続的に排出除去する分級手段、
機械式衝撃力を用いて微粉砕物の表面改質を行う表面改質手段、及び、
該分級手段と該表面改質手段との間の空間を第一の空間と第二の空間とに仕切る案内手段を有するトナー粒子の製造装置であって、
該微粉砕物は、結着樹脂、ワックス及び着色剤を少なくとも含有し、
該分級手段は該表面改質手段の上方に設けられており、
該表面改質手段は、
水平方向に回転する回転子と、
該回転子の外縁から該回転子の回転軸に対して垂直方向に一定間隔を保持して配置された固定子とを有し、
該回転子は、その外縁上に複数のハンマーを有し、
該固定子の該回転子に対向する表面には、１本又は複数本の溝が設けられており、該溝は、回転子の回転方向の下流側に行くにつれて、固定子底部からの高さが一定若しくは高くなるように傾斜し、かつ、該溝の円周方向を示す溝方向線の、該回転子の回転軸軸線に対する角度θ１が６０度以上、９０度以下であることを特徴とするトナー粒子の製造装置。
［４］前記ハンマーの、前記回転子の回転軸の軸線方向の長さＡ（ｍｍ）と、前記固定子の、回転軸の軸線方向の長さＢ（ｍｍ）が２．０≦Ｂ／Ａ≦１５．０の関係を満たすことを特徴とする［３］に記載のトナー粒子の製造装置。 As a result of intensive studies, the present inventors have found that the above requirements can be satisfied by adopting the configuration of the present invention described below, and have reached the present invention.
[1] A method for producing toner particles having a surface modification step of a finely pulverized product containing at least a binder resin, a wax and a colorant,
The surface modification step is performed using a surface modification apparatus,
The surface modifying apparatus is
Classification means to continuously discharged and removed outside the apparatus fines under at least a predetermined particle size or less out of the finely pulverized product,
Surface modification means for modifying the surface of the finely pulverized product using mechanical impact force; and
A guide means for partitioning a space between the classification means and the surface modification means into a first space and a second space;
The classification means is provided above the surface modification means,
The surface modification means includes
A rotor that rotates horizontally ;
And a stator disposed to maintain a constant distance in a vertical direction from the outer edge of the rotor with respect to the rotation axis of said rotor,
The rotor has a plurality of hammers on its outer edge;
On the surface opposite to the rotor of the stator, as one or a plurality of grooves are provided, the grooves toward the downstream side in the rotational direction of the rotor, the height of the stator bottom wherein the but inclined to become constant or high and the groove direction line indicating the circumferential direction of the groove, the angle θ1 which pairs to the rotational shaft axis of the rotor 60 degrees or more and 90 degrees or less A method for producing toner particles.
[2] The axial length A (mm) of the rotating shaft of the rotor of the hammer and the axial length B (mm) of the rotating shaft of the stator are 2.0 ≦ B / A The method for producing toner particles according to [1], wherein the relationship of ≦ 15.0 is satisfied.
[3] classification means to continuously discharged and removed outside the apparatus fines under predetermined particle size or less out of the finely pulverized product,
Surface modification means for modifying the surface of the finely pulverized product using mechanical impact force; and
An apparatus for producing toner particles, comprising a guide means for partitioning a space between the classification means and the surface modification means into a first space and a second space,
The finely pulverized product contains at least a binder resin, a wax and a colorant,
The classification means is provided above the surface modification means,
The surface modification means includes
A rotor that rotates horizontally ;
And a stator disposed to maintain a constant distance in a vertical direction from the outer edge of the rotor with respect to the rotation axis of said rotor,
The rotor has a plurality of hammers on its outer edge;
On the surface opposite to the rotor of the stator, as one or a plurality of grooves are provided, the grooves toward the downstream side in the rotational direction of the rotor, the height of the stator bottom wherein the but inclined to become constant or high and the groove direction line indicating the circumferential direction of the groove, the angle θ1 which pairs to the rotational shaft axis of the rotor 60 degrees or more and 90 degrees or less An apparatus for producing toner particles.
[4] A length A (mm) in the axial direction of the rotation axis of the rotor of the hammer and a length B (mm) in the axial direction of the rotation axis of the stator are 2.0 ≦ B / A. The toner particle manufacturing apparatus according to [3], wherein the relationship of ≦ 15.0 is satisfied.

Claims

A method for producing toner particles comprising a surface modification step of a finely pulverized product containing at least a binder resin, a wax and a colorant,
The surface modification step is performed using a surface modification apparatus,
The surface modifying apparatus is
Classification means to continuously discharged and removed outside the apparatus fines under at least a predetermined particle size or less out of the finely pulverized product,
Surface modification means for modifying the surface of the finely pulverized product using mechanical impact force; and
A guide means for partitioning a space between the classification means and the surface modification means into a first space and a second space;
The classification means is provided above the surface modification means,
The surface modification means includes
A rotor that rotates horizontally ;
And a stator disposed to maintain a constant distance in a vertical direction from the outer edge of the rotor with respect to the rotation axis of said rotor,
The rotor has a plurality of hammers on its outer edge;
On the surface opposite to the rotor of the stator, as one or a plurality of grooves are provided, the grooves toward the downstream side in the rotational direction of the rotor, the height of the stator bottom wherein the but inclined to become constant or high and the groove direction line indicating the circumferential direction of the groove, the angle θ1 which pairs to the rotational shaft axis of the rotor 60 degrees or more and 90 degrees or less A method for producing toner particles.

A length A (mm) of the hammer in the axial direction of the rotation axis of the rotor and a length B (mm) of the stator in the axial direction of the rotation axis are 2.0 ≦ B / A ≦ 15. The toner particle manufacturing method according to claim 1, wherein the relationship of 0 is satisfied.

Classification means to continuously discharged and removed outside the apparatus fines under predetermined particle size or less out of the finely pulverized product,
Surface modification means for modifying the surface of the finely pulverized product using mechanical impact force; and
An apparatus for producing toner particles, comprising a guide means for partitioning a space between the classification means and the surface modification means into a first space and a second space,
The finely pulverized product contains at least a binder resin, a wax and a colorant,
The classification means is provided above the surface modification means,
The surface modification means includes
A rotor that rotates horizontally ;
And a stator disposed to maintain a constant distance in a vertical direction from the outer edge of the rotor with respect to the rotation axis of said rotor,
The rotor has a plurality of hammers on its outer edge;
On the surface opposite to the rotor of the stator, as one or a plurality of grooves are provided, the grooves toward the downstream side in the rotational direction of the rotor, the height of the stator bottom wherein the but inclined to become constant or high and the groove direction line indicating the circumferential direction of the groove, the angle θ1 which pairs to the rotational shaft axis of the rotor 60 degrees or more and 90 degrees or less An apparatus for producing toner particles.

A length A (mm) of the hammer in the axial direction of the rotation axis of the rotor and a length B (mm) of the stator in the axial direction of the rotation axis are 2.0 ≦ B / A ≦ 15. The toner particle manufacturing apparatus according to claim 3, wherein the relationship of 0 is satisfied.