Toner for developing electrostatic latent image
AssigneeKYOCERA Document Solutions Inc.
InventorMasaki Okita
Life of this patent
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Abstract
A toner for developing an electrostatic latent image, the toner comprising: a releasing agent; and a binder resin, wherein: the releasing agent includes at least a first releasing agent material and a second releasing agent material, the first releasing agent material having a different melting point compared to the second releasing agent material; and a differential scanning calorimetric curve, obtained by measuring the toner for developing the electrostatic latent image by means of a differential scanning calorimeter, exhibits a shoulder at a temperature in a range of 50° C. to 53° C. corresponding to a glass transition temperature of the toner for developing the electrostatic latent image, and also exhibits a local maximum point at a temperature in a range of 90° C. to 95° C.
Claims12
A toner for developing an electrostatic latent image, the toner comprising:
- a releasing agent;
- and
- a binder resin, wherein:
- the releasing agent includes at least a first releasing agent material and a second releasing agent material, the first releasing agent material having a different melting point compared to the second releasing agent material;
- and
- a differential scanning calorimetric curve, obtained by measuring the toner for developing the electrostatic latent image by means of a differential scanning calorimeter, exhibits a shoulder at a temperature in a range of 50° C. to 53° C. corresponding to a glass transition temperature of the toner for developing the electrostatic latent image, and also exhibits a local maximum point at a temperature in a range of 90° C. to 95° C., and wherein
- the differential scanning calorimetric curve exhibits an endotherm starting temperature caused by the releasing agent in a range of 65° C. to 70° C., an endotherm ending temperature caused by the releasing agent in a range of 135° C. to 140° C., a lowest endothermic peak temperature caused by the first releasing agent material in a range of 80° C. to 85° C., and a highest endothermic peak temperature caused by the second releasing agent material in a range of 127° C. to 133° C.;
- and
- the local maximum point is in a region below a baseline that connects an endotherm starting point corresponding to an endotherm starting temperature and an endotherm ending point corresponding to an endotherm ending temperature.
Dependencies are inferred from the claim text.