| 摘要 |
PURPOSE:To form a magnetic color toner rich in coloration by coating each core particle made of a heat-resistant material contg. or covering the magnetic particles with a covering layer contg. a heat-sublimable dye. CONSTITUTION:The surface of each heat-resistant core particle 1 contg. magnetic particles is coated with a covering layer 2 contg. a dye heat-sublimable at 50-250 deg.C, such as malachite green or fuchsin. The heat-resistant core particles 1 are obtained by mixing the magnetic particles with a monomer, adding a crosslinking agent, and polymerizing it by the suspension polymn. or emulsion polymn. method. As a result, since the sharp color of the heat-sublimable dye can be developed without being affected by the tone of the magnetic particles in a one-component type toner, a color image rich in coloration can be obtained. |
