JP2015225319A5

JP2015225319A5 -

Info

Publication number: JP2015225319A5
Application number: JP2014111904A
Authority: JP
Filing date: 2014-05-30
Publication date: 2017-06-29
Anticipated expiration: 2034-05-30

Description

＜比較例用トナー５〜８の製造＞
実施例用トナー２１の製造において、使用するトナー粒子、シリカ微粒子の種類及びシリカ微粒子の部数を表５に示す通りに変更すること以外は、実施例用トナー２１の製造と同様にして、比較例用トナー５〜８を得た。得られたトナーを分析したところ、結着樹脂１００部を含有していた。得られたトナーの物性を表５にまとめる。 <Manufacture of Toners 5-8 for Comparative Examples>
In the production of the toner 21 for the example, a comparative example was made in the same manner as in the production of the toner 21 for the example except that the toner particles to be used, the type of silica fine particles, and the number of silica fine particles were changed as shown in Table 5. Toners 5 to 8 were obtained. The obtained toner was analyzed and found to contain 100 parts of a binder resin. Table 5 summarizes the physical properties of the obtained toner.

Claims

A toner having toner particles containing a binder resin and a colorant, and inorganic fine particles,
The thermal conductivity of the toner is 0.230 W / (m · K) or more and 0.270 W / (m · K) or less,
The toner having a surface free energy of 30.0 mJ / m ² or more and 50.0 mJ / m ² or less.

The toner according to claim 1, wherein the colorant is a treated magnetic material obtained by surface-treating magnetic iron oxide with a silane compound.

The magnetic iron oxide has a silicon element on the surface, and the amount of silicon eluted when the magnetic iron oxide is dissolved until the dissolution rate of the iron element reaches 5.00% by mass is the magnetic iron oxide. The toner according to claim 2, wherein the toner content is 0.05% by mass or more and 0.50% by mass or less based on.

The residual carbon amount derived from the silane compound after washing the treated magnetic body with styrene is 0.40% by mass or more and 1.20% by mass or less based on the magnetic iron oxide. The toner according to 2 or 3.

The toner according to claim 1, wherein the inorganic fine particles are surface-treated with silicone oil.

The toner according to claim 5, wherein an immobilization ratio of the silicone oil of the inorganic fine particles is 85% by mass or more.

The toner according to claim 5, wherein the inorganic fine particles are inorganic fine particles that have been treated with silicone oil and then treated with alkoxysilane or silazane.

8. The toner according to claim 1, wherein the inorganic fine particles have a volume specific heat at 50 ° C. of 5000 J / (cm ³ · K) or more and 10000 J / (cm ³ · K) or less. .