Black toners containing infrared transmissive

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:
• % R800-1200 nm≧(0.00082×Rvis+0.0078)(λ)+1.98Rvis−9.6
• and
• % R800-1200 nm≦(0.00082×Rvis+0.0078)(λ)+1.98Rvis+10.0
• wherein % R800-1200 nm is the percent reflectance for a given wavelength (λ) in the range 800-1200 nm, Rvis is the average percent reflectance of the fused toner formulation for the 380-730 nm region of the spectrum, and the value of % R800-1200 nm at said given wavelength is less than or equal to 70%;
• and
• 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.