Method for producing toner
AssigneeKao Corporation
InventorsAkihiro Eida, Takeshi Ashizawa
Life of this patent
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Abstract
A method for producing a toner, including at least the following steps: step (A): pulverizing a negatively chargeable charge control resin that does not soften at a temperature of 180° C. or lower to an average particle size of from 0.05 to 2 μm; step (B): melt-kneading at least a pulverized product of the negatively chargeable charge control resin obtained in the step (A), a resin binder, and a colorant; and step (C): pulverizing a melt-kneaded product obtained in the step (B) and classifying the pulverized product. The toner obtained according to the present invention is suitably used in, for example, the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.
Claims17
A method for producing a toner, comprising at least the following steps (A) to (C):
- step (A):
- pulverizing a negatively chargeable charge control resin that does not soften at a temperature of 180° C. or lower to an average particle size of from 0.05 to 2 μm;
- step (B):
- melt-kneading at least a pulverized product of the negatively chargeable charge control resin obtained in the step (A), a resin binder, and a colorant;
- and
- step (C):
- pulverizing a melt-kneaded product obtained in the step (B) and classifying the pulverized product.
A method for producing a toner, comprising at least the following steps (B′) and (C′):
- step (B′):
- melt-kneading a negatively chargeable charge control resin that does not soften at a temperature of 180° C. or lower and has an average particle size of from 0.05 to 2 μm, a resin binder, and a colorant;
- and
- step (C′):
- pulverizing a melt-kneaded product obtained in the step (B′) and classifying the pulverized product.
Dependencies are inferred from the claim text.