Patent ID: 7776994

Claim:
A resin particle dispersion liquid comprising: resin particles comprising polyester having terminal carboxyl groups, the polyester being obtained by polycondensation of a polycondensable monomer, wherein the polyester has the terminal carboxyl groups that are partially neutralized to form carboxyl anions, the resin particles in the resin particle dispersion liquid having a value of (d a /(d a +d c )) of from approximately 0.30 to approximately 0.90, when in an absorption spectrum of the resin particles measured with an infrared spectrometer, d c represents a peak intensity of the terminal carboxyl group in a range of from 1,780 to 1,680 cm −1 , and d a represents a peak intensity of the neutralized carboxyl anion in a range of from 1,670 to 1,550 cm −1 , the polyester has an acid value of approximately 1 mg·KOH/g or more and less than approximately 15 mg·KOH/g before neutralization, the resin particle dispersion liquid comprises a divalent or higher organic acid selected from the group consisting of trimellitic anhydride, trimellitic acid, trimesic acid and pyromellitic acid in an amount of from approximately 0.1 to approximately 20 parts by weight per 100 parts by weight of the resin particles, and the resin particles have a median diameter of from approximately 0.1 to approximately 2.0 μm.