| 摘要 |
PURPOSE:To suppress a transfer unevenness and allow the clear discrimination by regulating maximum developing weights on an image forming body of yellow toner, magenta toner and cyan toner. CONSTITUTION:When the maximum developing weight M1(mg/cm<2>) of a yellow toner, the maximum developing weight M2 (mg/cm<2>) of a magenta toner and the maximum developing weight M3 (mg/cm<2>) of a cyan toner on an image forming body satisfy the relation of 0.6M2<M1<=0.95M2, 0.6M3<=M1<=0.95M3, M1 is less than 1.2 mg/cm<2> and M2, M23 are 1.2mg/cm<2> or more, and the spectral reflectance to a light having a wavelength lambda (nm), on the basis of a transfer material, of a fixed image obtained by independently transferring the magenta toner and cyan toner on the transfer material in adhering amounts of 1.0+0.05mg/cm<2> and fixing them by a heat roller fixer R1(lambda), R2(lambda) %, respectively, the magenta toner and cyan toner in which the product of the both, R3(lambda)=R1(lambda).R2(lambda).10<-2> satisfies the expressions I, II are used. |
