TONER AND METHOD OF PRODUCING TONER
PROBLEM TO BE SOLVED: To provide a toner that has a good cleaning property and is not likely to cause an adverse effect on an image.SOLUTION: A toner includes toner particles each containing a binder resin and colorant, and an external additive A. The external additive A (i) is an external additive...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a toner that has a good cleaning property and is not likely to cause an adverse effect on an image.SOLUTION: A toner includes toner particles each containing a binder resin and colorant, and an external additive A. The external additive A (i) is an external additive containing a charge control agent in its surface, (ii) has a wall surface frictional angle θ calculated from the following formula (1) of 25.0° or less, formula (1): θ=τ/5.0, (iii) has a number average particle diameter (D1) of primary particles of 70 nm or more and 500 nm or less, and (iv) has a density represented by the following formula (2) of 0.40 or more and 0.90 or less, the formula (2): density=the area of external additive A/the area of area surrounded by envelope of external additive A.SELECTED DRAWING: None |
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