ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER

Provided is an electrostatic charge image developing toner which is capable of forming high-quality images for a long time period. An electrostatic charge image developing toner, including at least a binder resin, a colorant, and a mold release agent, wherein a coefficient of variation of volume par...

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Bibliographische Detailangaben
Hauptverfasser: HARUKI Hidehito, FUJISAKI Tatsuya, FURUKAWA Junichi, HIRANO Shiro, ONISHI Junya
Format: Patent
Sprache:eng
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Zusammenfassung:Provided is an electrostatic charge image developing toner which is capable of forming high-quality images for a long time period. An electrostatic charge image developing toner, including at least a binder resin, a colorant, and a mold release agent, wherein a coefficient of variation of volume particle size distribution of the toner particles is 18% or less, and in a particle shape distribution analysis made using a flow type particle image analyzer, when an equivalent circle average particle diameter of the toner particles is designated as D (µm), an average aspect ratio of toner particles having an equivalent circle particle diameter in the range of (D - 3) to (D - 2) (µm) is designated as AR(L), and an average aspect ratio of toner particles having an equivalent circle particle diameter in the range of (D + 3) to (D + 4) (µm) is designated as AR(H), the relationship represented by the following Expression (1) is satisfied. [Expression 1] 0.110 ‰¤ AR L ˆ’ AR H ‰¤ 0.250