Toner for developing an electrostatic charge image and an image forming method
AssigneeKonica Minolta, Inc.
InventorsShiro Hirano, Takanari Kayamori, Yuya Kubo
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Abstract
The toner for developing an electrostatic charge image of the present invention contains a toner base particle comprising a binder resin and at least two kinds of organic pigments, and alumina as an external additive. The at least two kinds of organic pigments comprises: a pigment P1 having an absorption maximum wavelength λmax (nm) of greater than 400 nm and less than 600 nm when dispersed in methyl ethyl ketone; and a pigment P2 having an absorption maximum wavelength λ max (nm) of 600 nm or more and 700 nm or less when dispersed in methyl ethyl ketone.
Claims10
A toner for electrostatic charge image development comprising:
- a toner base particle comprising a binder resin and at least two kinds of organic pigments;
- and
- alumina particles as an external additive;
- wherein,
- the at least two kinds of organic pigments comprises:
- a pigment P1 having an absorption maximum wavelength Amax (nm) of greater than 400 nm and less than 600 nm when dispersed in methyl ethyl ketone;
- and
- a pigment P2 having an absorption maximum wavelength A max (nm) of 600 nm or more and 700 nm or less when dispersed in methyl ethyl ketone,
- wherein the toner optionally comprises carbon black in an amount of more than 0% and 1% by mass or less based on the total mass obtained by summing up the toner base particles and the external additive.
Dependencies are inferred from the claim text.