Patent ID: 7229727

Claim:
A yellow toner comprising at least a binder resin and a colorant, wherein; in a spectral-distribution diagram in which reflectance (%) is plotted as ordinate and wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, and wherein the colorant comprises a mixture of i) a compound selected from the compound (1) group consisting of C.I. Pigment Yellow 155 and compounds represented by the following Formulas (1-1), (1-2), (1-3) and (1-4) and ii) a compound selected from the compound (2) group consisting of C.I. Pigment Yellow 110, 139 and 147, in which said i) and ii) compounds are mixed in a weight ratio of from 70:30 to 99:1, and the compounds selected from each of the compound (1) group and the compound (2) are contained in an amount of from 5 parts by weight to 15 parts by weight in total, based on 100 parts by weight of the binder resin: wherein X represents Cl, CH 3 or OCH 3 ; Y represents H or Cl; R K 2 represents H, CH 3 , OCH 3 or Cl; R K 4 represents H, CH 3 , Cl, OCH 3 or OC 2 H 5 ; and R K 5 represents OCH 3 or Cl; wherein R D 2 represents NO 2 , CH 3 , OCH 3 or Cl; R D 4 represents. CH 3 , Cl, H, OCH 3 or NO 2 ; R D 5 represents H or OCH 3 ; R K 2 represents H, CH 3 , Cl or OCH 3 ; R K 4 represents H, CH 3 , Cl, OC 2 H 5 or NHCOCH 3 ; and R K 5 represents HOCH 3 or Cl; wherein A represents and B represents wherein R K 2 represents H, CH 3 or Cl; R K 4 represents H or OCH 3 ; and M represents Ca or Sr.