Patent ID: 9201322
Filing Date: 2015-12-01
Classification: G03G

Abstract:
1. A positively chargeable toner for electrostatic image development comprising: a coalesced fine particle aggregate of a binder resin, a colorant, a dispersing agent, and a metal ion, wherein the binder resin includes at least 70 wt. % of a (meth)acrylic resin or styrene-(meth)acrylic resin having quaternary ammonium groups, wherein the (meth)acrylic resin or styrene-(meth)acrylic resin has a concentration of a monomer, which has the quaternary ammonium group, which is 1 to 45% by mass of the (meth)acrylic resin or styrene-(meth)acrylic resin, and wherein the toner has a hydrophobicity (methanol wettability) of 5% to 40%.