METHOD FOR MANUFACTURING TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT

To provide a method for manufacturing a toner for electrostatic charge image development excellent in low-temperature fixability and indicating a wide non-offset temperature width.SOLUTION: A method for manufacturing a toner for electrostatic charge image development includes: a first aggregation st...

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Bibliographic Details
Main Authors MIZUHATA KOJI, SHIMIZU AKITAKA
Format Patent
LanguageEnglish
Japanese
Published 26.03.2020
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide a method for manufacturing a toner for electrostatic charge image development excellent in low-temperature fixability and indicating a wide non-offset temperature width.SOLUTION: A method for manufacturing a toner for electrostatic charge image development includes: a first aggregation step of aggregating resin particles X containing an amorphous polyester resin A in an aqueous medium to obtain aggregated particles; and a fusion step of fusing the obtained aggregated particles. The aggregation step includes adding a monovalent cation (a) and a di- or more valent metal cation (b), and the amount of addition of the cation (b) is 0.5 mol% or more and 5 mol% or less based on the total amount of the cation (a) and the cation (b).SELECTED DRAWING: None 【課題】低温定着性に優れ、且つ、広い非オフセット温度幅を示す静電荷像現像用トナーの製造方法に関する。【解決手段】非晶性ポリエステル系樹脂Ａを含有する樹脂粒子Ｘを水系媒体中で凝集させて凝集粒子を得る第１凝集工程、及び、得られた凝集粒子を、融着させる融着工程を含み、前記凝集工程において、１価のカチオン（ａ）、及び２価以上の金属カチオン（ｂ）を添加し、前記カチオン（ｂ）の添加量が、前記カチオン（ａ）及び前記カチオン（ｂ）の合計量に対して、０．５モル％以上５モル％以下である、静電荷像現像用トナーの製造方法。【選択図】なし
Bibliography:Application Number: JP20180172682