MAGENTA TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT

PROBLEM TO BE SOLVED: To provide a magenta toner that is further improved in a tone, a saturation, and electrophotographic characteristics.SOLUTION: A coloring material constituting magenta toner particles comprises at least one visible light-excitation nitride phosphor (A). The content of the visib...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SETO TAKATOSHI, KITAHATA TAKUYA, FUJIBAYASHI FUSAKI
Format: Patent
Sprache:eng ; jpn
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a magenta toner that is further improved in a tone, a saturation, and electrophotographic characteristics.SOLUTION: A coloring material constituting magenta toner particles comprises at least one visible light-excitation nitride phosphor (A). The content of the visible light-excitation nitride phosphor (A) is 5% or more and 75% or less in the coloring material, and an average of dispersion particle diameter of the visible light-excitation nitride phosphor (A) is 50 nm or more and 500 nm or less. The visible light-excitation nitride phosphor (A) is an inorganic compound having the same crystalline structure as a crystalline structure of MAlSiN, where M represents Mg, Ca, Sr, Ba, in which Eu is dissolved in a solid state as an activation element. 【課題】より一層の色調、彩度、電子写真特性が向上しているマゼンタトナーを提供する。【解決手段】マゼンタトナー粒子を構成する色材が、可視光励起窒化物蛍光体Aを少なくとも1種類含有し、色材に占める可視光励起窒化物蛍光体Aの含有率が5%以上75%以下であり、可視光励起窒化物蛍光体Aの分散粒子径の平均値が50nm以上500nm以下であることを特徴とする。可視光励起窒化物蛍光体Aは、MAlSiN3(Mは、Mg、Ca、Sr、Ba)の結晶構造と同一の結晶構造を有する無機化合物であって、Euを賦活元素として固溶させた可視光励起窒化物蛍光体である。【選択図】図1