Toner for electrostatic image development
AssigneeKonica Minolta, Inc.
InventorsHiroshi NAGASAWA, Kouji SUGAMA, Hiroyuki KONNO, Takaki KAWAMURA
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Abstract
There is provided a toner for electrostatic-image development that can obtain heat-resistant storability, fixed image strength and long-term stability of charging while having excellent low-temperature fixing property. The toner is formed with toner particles containing a binder resin and a crystalline ester compound, and the binder resin contains a styrene-acrylic resin including a structural unit derived from an acrylic ester monomer.
Claims15
A toner for electrostatic-image development that is formed with toner particles containing a binder resin and a crystalline ester compound,
- wherein the binder resin contains a styrene-acrylic resin including a structural unit derived from an acrylic ester monomer represented by any of general formulae (1) to (3) below:
- [in the general formula (1), R1 represents a hydrogen atom or a methyl group, X1 represents a single bond or —C(═O)—, R2 represents a hydrogen atom, an alkyl group having 1 to 16 carbon atoms or an aryl group having 6 to 15 carbon atoms and R3 represents an alkylene group having 1 to 8 carbon atoms which may contain —O— or —C(═O)—. m represents an integer of 2 to 12 and n represents an integer of 2 to 20.];
- [in the general formula (2), R4 represents a hydrogen atom or a methyl group, X2 represents a single bond or —C(═O)—, R5 represents a hydrogen atom, an alkyl group having 1 to 16 carbon atoms or an aryl group having 6 to 15 carbon atoms and R6 represents an alkylene group having 1 to 8 carbon atoms which may contain —O— or —C(═O)—. p represents an integer of 2 to 20.];
- and
- [in the general formula (3), R7 represents a hydrogen atom or a methyl group, R8 represents a hydrogen atom, an alkyl group having 1 to 16 carbon atoms or an aryl group having 6 to 15 carbon atoms and R9 represents a single bond or an alkylene group having 1 to 8 carbon atoms which may contain —O— or —C(═O)—. s represents an integer of 2 to 12 and t represents an integer of 2 to 20].
Dependencies are inferred from the claim text.