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1. US20130101934 - Toner for developing electrostatic images

官庁
アメリカ合衆国
出願番号 13806473
出願日 24.06.2011
公開番号 20130101934
公開日 25.04.2013
特許番号 08846285
特許付与日 30.09.2014
公報種別 B2
IPC
G03G 9/08
G物理学
03写真;映画;光波以外の波を使用する類似技術;電子写真;ホログラフイ
Gエレクトログラフィー;電子写真;マグネトグラフィー
9現像剤
08トナー粒子をもつもの
G03G 9/093
G物理学
03写真;映画;光波以外の波を使用する類似技術;電子写真;ホログラフイ
Gエレクトログラフィー;電子写真;マグネトグラフィー
9現像剤
08トナー粒子をもつもの
093カプセル化トナー粒子
G03G 9/097
G物理学
03写真;映画;光波以外の波を使用する類似技術;電子写真;ホログラフイ
Gエレクトログラフィー;電子写真;マグネトグラフィー
9現像剤
08トナー粒子をもつもの
097可塑剤;荷電制御剤
B82Y 30/00
B処理操作;運輸
82ナノテクノロジー
Yナノ構造物の特定の使用または応用;ナノ構造物の測定または分析;ナノ構造物の製造または処理
30材料または表面科学のためのナノテクノロジー,例.ナノ複合材料
CPC
G03G 9/09342
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
093Encapsulated toner particles
09307specified by the shell material
09342Inorganic compounds
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
G03G 9/0819
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
0819characterised by the dimensions of the particles
G03G 9/0827
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
0827characterised by their shape, e.g. degree of sphericity
G03G 9/09321
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
093Encapsulated toner particles
09307specified by the shell material
09314Macromolecular compounds
09321obtained by reactions only involving carbon-to-carbon unsaturated bonds
G03G 9/09328
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
093Encapsulated toner particles
09307specified by the shell material
09314Macromolecular compounds
09328obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
出願人 Chiba Takeru
Zeon Corporation
Kurokawa Hisashi
発明者 Chiba Takeru
Kurokawa Hisashi
代理人 Westerman, Hattori, Daniels & Adrian, LLP
発明の名称
(EN) Toner for developing electrostatic images
要約
(EN)

An object of the present invention is to provide a toner for developing electrostatic images, which prevents a decrease in toner charge amount in the environment of high temperature and high humidity, prevents occurrence of fog and has excellent flowability.

Provided is a toner for developing electrostatic images, comprising an external additive and colored resin particles comprising a binder resin and a colorant, wherein the external additive is core-shell type complex fine particles in which resin fine particles are covered with at least one inorganic component selected from the group consisting of silica, alumina, titania and zirconia, and the volume ratio of the inorganic component of the core-shell type complex fine particles is 45 to 75% by volume when the total volume of the core-shell type complex fine particles is 100% by volume.