| 摘要 |
PURPOSE: A color toner is provided to have enhanced color gamut and print performance by including red pigment 269, red pigment 185, and red pigment 122 as a coloring agent at optimal proportion. CONSTITUTION: A toper composition comprises (a) resin and (b) colorant. The colorant comprises (1) red pigment 269, (2) red pigment 185, and (3) red pigment 122. The colorant comprises (a) red pigment 269 of 35-55 weight% of the colorant comprises, (b) red pigment 185 of 26-46 weight% of the coloring agent, and (c) red pigment 122 of 10-30 weight% of coloring agent. The toner is emulsion aggregation toner. 0.45g/cm^2 of the toner sample above 0.22μm of white nitrocellulose membrane has (a) 42-48 of L* value, (b) 79-83 of a* value , (c) 10-30 of b* value, and (d) 81-85 of C* value. L* is brightness, a* is position of red / magenta and green scale, b* is positioned on the blue and yellow scale, and c* is chroma. [Reference numerals] (AA) Reflection rate index; (BB) Reflection rate distribution graph; (CC) Optimization; (DD) Benchmark toner; (EE) Wavelength(nm) |
