JP2014032242A5 - - Google Patents

Claims (9)

A toner containing toner particles having a core containing a binder resin A, a colorant and a wax, and a shell phase containing a resin B,
In the measurement with the differential scanning calorimeter (DSC) of the toner, the endothermic amount of the endothermic peak is 30.0 J / g or more and 125.0 J / g or less,
Both the binder resin A and the resin B contain a resin having crystallinity,
In the measurement by the differential scanning calorimeter (DSC) of the binder resin A, the peak temperature TpA (° C.) of the maximum endothermic peak is 50 ° C. or more and 85 ° C. or less,
The binding resin A and the resin B were measured by a constant load extrusion type capillary rheometer having an area of a pressure surface with respect to a sample of a piston for pressurizing the sample of 1.0 cm ² and a diameter of a die hole into which the sample was extruded of 1.0 mm. In measuring flow characteristics,
When pressurizing the sample at a pressure of 5.0 MPa with a piston at a temperature TpA + 5 ° C., the time from the start of pressurization until the displacement of the piston becomes 2.0 mm is tA (TpA + 5 ° C.) in the case of binder resin A, In the case of resin B, when tB (TpA + 5 ° C.),
10 [s] ≦ tA (TpA + 5 ° C.) ≦ 100 [s] (1)
50 [s] ≦ {tB (TpA + 5 ° C.) − TA (TpA + 5 ° C.)} ≦ 2000 [s] (2)
Toner characterized by being. The binder resin A toner according to claim 1, characterized by containing a resin having a crystalline polyester component. The binder resin A toner according to claim 2 wherein the crystalline polyester component, the binder resin A to 50.0 mass% or more, characterized that you containing less 90.0 wt%. The binder resin A toner according to claim 2 or 3 and the crystalline polyester component and the amorphous resin component is characterized by containing a chemically bonded block polymer.   5. The peak temperature TpB (° C.) of the maximum endothermic peak in the measurement with the differential scanning calorimeter (DSC) of the resin B is 50 ° C. or more and 85 ° C. or less, 5. The toner described in 1. The resin B, the toner according to any one of claims 1 to 5, characterized in that it contains a resin having a crystalline polyester component. The resin B, according to claim 6, wherein the crystalline polyester component and a vinyl monomer b1 including the molecular structure, a vinyl resin obtained by copolymerizing with other vinyl monomers b2 Toner.   The ratio of the vinyl-type monomer b1 is 20.0 mass% or more and 50.0 mass% or less with respect to the quantity of all the monomers used for the copolymerization of the said resin B, The Claim 7 characterized by the above-mentioned. toner.   9. The toner particle according to claim 1, wherein the toner particles contain 2.0 parts by mass or more and 15.0 parts by mass or less of the resin B with respect to 100 parts by mass of the core. The toner described.