| 摘要 |
PURPOSE:To improve the transferability of a blue toner image by using the blue toner produced by a specific method and forming the blue toner image in the developing stage before the final developing stage. CONSTITUTION:The multicolor toner images including the blue toner image (A) are formed by repeating, plural times, the stage for developing electrostatic latent images by using developers contg. toners and carriers and thereafter, these toner images are simultaneously transferred to a transfer material to form the multicolor images. The image A is formed in the developing stage before the final developing stage (e.g. stage for forming the black toner image). The blue toner constituting the image A is used after a toner material contg. a copper phthalocyanine pigment is mixed with the toner and the mixture is kneaded while the above-mentioned toner material is substantially not thermally melted, then the mixture is ground to adjust the existence ratio of the blue pigment flocs having >=80mum<2> sectional area to <=5X10<2> pieces/mm<2>. |
