TONER FOR DEVELOPING ELECTROSTATIC IMAGES

摘要

Provided is a toner for developing electrostatic images containing a toner particle. The toner particle contains a binder resin and a release agent. The binder resin contains a vinyl resin component and a crystalline polyester resin component. The vinyl resin component has a structural unit derived from an alkyl (meth)acrylate monomer represented by Formula (1):;H2C═CR1—COOR2   Formula (1):;In Formula (1), R1 represents a hydrogen atom or a methyl group, and R2 represents an alkyl group having 8 to 22 carbon atoms.

The crystalline polyester resin component satisfies Formula (2):
;5≦|Cacid−Calcohol|≦12   Formula (2):;In Formula (2), Calcohol represents the number of carbon atoms of the main chain of a structural unit derived from a polyhydric alcohol and Cacid represents the number of carbon atoms of the main chain of a structural unit derived from a polyvalent carboxylic acid.

主权项

1. A toner for developing electrostatic images, comprising:
a toner particle comprising a binder resin and a release agent,
the binder resin comprising a vinyl resin component and a crystalline polyester resin component,the vinyl resin component having a structural unit derived from an alkyl (meth)acrylate monomer represented by Formula (1):
H2C═CR1—COOR2   Formula (1):where R1 represents a hydrogen atom or a methyl group, and R2 represents an alkyl group having 8 to 22 carbon atoms,
the crystalline polyester resin component satisfying Formula (2):
)5≦|Cacid−Calcohol|≦12   Formula (2):where Calcohol represents the number of carbon atoms of the main chain of a structural unit derived from a polyhydric alcohol forming the crystalline polyester resin component and Cacid represents the number of carbon atoms of the main chain of a structural unit derived from a polyvalent carboxylic acid forming the crystalline polyester resin component.