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US 9,429,861 B2Granted
Electrostatic charge image developing toner and method for producing electrostatic charge image developing toner
AssigneeKYOCERA Document Solutions Inc.
InventorKohei Terasaki
Life of this patent
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Abstract
An electrostatic charge image developing toner contains a plurality of toner particles. Each of the toner particles includes a toner core containing a binder resin and a shell layer coating the toner core. The shell layers contain a thermosetting resin. The toner cores have a negative zeta potential in an aqueous medium adjusted to pH 4. The toner particles have a positive zeta potential in an aqueous medium adjusted to pH 4. The shell layers have a film thickness of 1 nm or more and 20 nm or less.
Claims5
An electrostatic charge image developing toner containing a plurality of toner particles,
- the toner particles each including a toner core containing a binder resin and a shell layer coating the toner core,
- the binder resin containing a polyester resin,
- the shell layers containing a melamine resin,
- the toner cores having a negative zeta potential in an aqueous medium adjusted to pH 4,
- the toner particles having a positive zeta potential in an aqueous medium adjusted to pH 4,
- the shell layers having a film thickness of 1 nm or more and 20 nm or less.
3 more elements
Dependencies are inferred from the claim text.