Patent ID: 8133647
Filing Date: 2012-03-13
Classification: G03G

Abstract:
1. A black toner formulation comprising: a binder; an infrared absorbing black colorant at a concentration of 0.25-2.0% by weight; and a plurality of infrared transmissive colorants other than an infrared transmissive black colorant configured to provide a black color, wherein said plurality of infrared transmissive colorants comprise two or more of the following: blue pigment, cyan pigment, green pigment, yellow pigment, orange pigment, brown pigment, red pigment, magenta pigment and violet pigment; wherein the toner formulation indicates the following spectral characteristics when fused on white paper at a L* value of 9-24: wherein % R wherein the toner formulation has a chroma C* of less than or equal to 15.0 for all half-tone shade levels printed on white paper.