Image forming method

Details Image forming method Image forming method

2005-05-31

2010-10-12

Le, Hoa V (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

C430S108700, C430S110100, C430S110200, C430S110400, C430S126100

Reexamination Certificate

active

07811738

ABSTRACT:
In an image forming method including a charging step, an exposure step, a development step using a developing roll, a transfer step, a fixing step and a cleaning step of removing a toner remaining on the surface of a photosensitive member after the transfer step, the developing roll has a surface brightness of 30 to 220 and a surface roughness Rz of 1 to 20 μm, the cleaning blade is a cleaning blade made of a polyurethane elastomer and having a peak value of at most 0.95, a peak temperature of −15 to 10° C. and a width at half maximum of at least 25° C. in viscoelasticity tan δ, the toner has a volume average particle diameter of 4 to 10 μm and an average circularity from 0.950 to 0.995, the charge level of the toner on the surface of the photosensitive member is 10 to 80 μC/g in terms of an absolute value, and the pH of a water extract of the toner is 3 to 8.

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