| 摘要 |
PROBLEM TO BE SOLVED: To provide a full color image forming method and a full color image forming device by which sufficient image density is obtained even in the case of low potential development, and high image quality and high durability are satisfied. SOLUTION: In this tandem type image forming method, an a-Si photoreceptor whose diameter is 20 to 80 mm is used as a photoreceptor, surface potential in a developing area is set to 300 to 450 V as an absolute value, and a contact or non-contact one-component developing method is used. The circumferential speed of a developing sleeve is made 1.05 to 2.0 times as high as that of the photoreceptor drum in the contact method, and is made 1.1 to 4.0 times as high as that of the photoreceptor drum in the non-contact method. Then, non-magnetic toner to be positively electrified whose particle size is 4 to 10 μm, whose tinting strength is 1.0 to 1.8 and which is set so that a difference between the maximum value and the minimum value of the coloring ability of YMC is <=0.5 is used. |
