| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an additive for a positively-charged toner that can improve the negative chargeability of a negatively-charged toner.SOLUTION: An additive for toner of the present invention contains resin particles having a surface layer formed at least of an amino-based resin, and a hydrophobic inorganic oxide, where a content ratio of the hydrophobic inorganic oxide is 0.05 parts by weight to 10 parts by weight relative to 100 parts by weight of the resin particles; an average particle diameter of the resin particles is 780 nm or less; an average particle diameter of the hydrophobic inorganic oxide is 80 nm or less; and a hydrophobicity of the hydrophobic inorganic oxide is 45% or more.</p> |
