Patent ID: 6516175
Filing Date: 2003-02-04
Classification: G03G

Abstract:
A color image forming apparatus comprising:a plurality of recording medium arranged along a conveying path to form electrostatic latent images; a plurality of developing units to feed developers to said respective electrostatic latent images formed on said plurality of recording medium and form developed images, the plurality of developing units including a first developing unit having a first developer of lightness of 86 or higher measured by a CIE color specification system, a second developing unit having a second developer of lightness of 50 to 66 measured by the CIE color specification system, a third developing unit having a third developer of lightness of 46 to 56 measured by the CIE color specification system, and a fourth developing unit having a fourth developer of lightness of 35 or lower measured by the CIE color specification system; a plurality of transfer units to multiple-transfer said developed images formed respectively on said plurality of recording medium sequentially on a material to be transferred which is conveyed along said conveying path; and a plurality of collectors to collect respective residual developers on said plurality of recording medium after passing said transfer units in said plurality of developing units respectively, wherein said first developing unit, said second developing unit, said third developing unit, and said fourth developing unit are respectively installed in a neighborhood of said plurality of recording medium sequentially from an upstream side of said conveying path to a downstream side of said conveying path.