Magenta image forming a toner, an electrostatic latent image developing one-component developer, the electrostatic latent image developing two-component developer, the manufacturing method of the magenta toner image forming

摘要

PPROBLEM TO BE SOLVED: To provide a magenta toner excellent in coloring power as a magenta pigment in a polymerized toner and capable of also satisfying heat resistance, and to provide a toner excellent in offset resistance, charging property and storage stability and having good color developing property and OHP transparency so as to meet the demand for higher performance by providing such a toner shape as not to cause cleaning defect of toner. PSOLUTION: The magenta toner for image formation is formed in an aqueous medium and composed essentially of a binder resin and a pigment, wherein the pigment is a brilliant carmine 6B pigment and the toner particles have a toner shape factor SF-2 represented by the expression (1): SF-2=äCSP2/SP/A}×(100/4π) being ≤180, wherein C represents the circumference of the toner and A represents the projected area of the toner. PCOPYRIGHT: (C)2007,JPO&INPIT