Electrostatic latent image developing toner
An object of the present invention is to provide an electrostatic latent image developing toner containing: a binder resin; and a releasing agent, wherein the binder resin contains a crystalline polyester resin; an endothermic peak top temperature of the electrostatic latent image developing toner is 70° C. or more measured with differential scanning calorimetry (DSC) in a heating-up period of the toner; and a heat value ΔH c (L) is 15% or less with respect to a heat value ΔH c , wherein the heat value ΔH c (L) is a heat value in the range of (an exothermic peak top temperature r c −7° C.) or less; and the heat value ΔH c is a heat value of the total exothermic peak measured with DSC in a heating-down period of the toner.
1. An electrostatic latent image developing toner comprising: a binder resin; and a releasing agent,
wherein the binder resin contains a crystalline polyester resin;
an endothermic peak top temperature of the electrostatic latent image developing toner is 70° C. or more measured with differential scanning calorimetry (DSC) in a heating-up period of the toner; and
a heat value ΔH c (L) is 15% or less with respect to a heat value ΔH c ,
wherein the heat value ΔH c (L) is a heat value in the range of (an exothermic peak top temperature r c −7° C.) or less; and
the heat value ΔH c is a heat value of the total exothermic peak measured with DSC in a heating-down period of the toner.
2. The electrostatic latent image developing toner described in claim 1 ,
wherein the releasing agent contains an aliphatic acid ester wax having 30 to 72 carbon atoms.
3. The electrostatic latent image developing toner described in claim 1 ,
wherein the releasing agent contains a hydrocarbon wax.
4. The electrostatic latent image developing toner described in claim 1 ,
wherein the releasing agent contains a hydrocarbon wax and an aliphatic acid ester wax having 30 to 72 carbon atoms.
5. The electrostatic latent image developing toner described in claim 3 ,
wherein the hydrocarbon wax contains a branched structure.
6. The electrostatic latent image developing toner described in claim 1 ,
wherein the exothermic peak top temperature r c is in the range of 50 to 80° C., the exothermic peak top temperature being measured with DSC in a heating-down period of the toner.
7. The electrostatic latent image developing toner described in claim 1 ,
wherein the exothermic top temperature r c is in the range of 60 to 75° C., the exothermic peak top temperature being measured with DSC in a heating-down period of the toner.
8. The electrostatic latent image developing toner described in claim 1 ,
wherein the crystalline polyester resin contained in the binder resin is a hybrid crystalline polyester resin.