Patent ID: 7531276
Filing Date: 2009-05-12
Classification: G03G

Abstract:
1. A color image forming method comprising: charging a photosensitive body so as to form a latent image; developing the latent image with a color toner so as to form a toner image on the photosensitive body; transferring the toner image to an image transfer body via an intermediate transfer body so as to form a non-fixed transfer image; and fixing the non-fixed transfer image to the an image transfer body, wherein: the fixing comprises thermally fixing the toner image to the an image transfer body by using: the color toner comprises a toner particle comprising crystals of a crystalline resin, crystals of a releasing agent and a non-crystalline resin; when the color toner is subjected to dynamic viscoelasticity measurement employing a sine wave vibration method, a minimum value of the relaxation elasticity H in a relaxation spectrum obtained from frequency dispersion characteristics when a measurement frequency measured at 60 and 80° C. is 0.1 to 100 rad/sec and a measurement strain at a frequency of 6.28 rad/sec is 0.1%, is in a range of about 10 to 900 Pa/cm a relaxation time λ corresponding to the minimum value is in a range of about 1 to 10,000 sec.