Cleaning member, image forming apparatus provided with a cleaning blade member, and process cartridge detachably attachable on the image forming apparatus

In Embodiment 1, the surface layer of the photosensitive drum 1 has a moderate friction property, whereby a smeared image did not occur and good images were obtained. Also, the cleaning blade 6a does not become very hard even at low temperatures and keeps sufficient rubber elasticity and therefore, when it frictionally contacts the photcsensitive drum 1, it can effect fine vibration and therefore, the surface layer of the photosensitive drum 1 is uniformly shaved off as fine shaving powder. As a result, it is difficult for the surface roughness of the photosensitive drum 1 to become great. In addition, the cleaning blade 6a maintain, a follow-up property even at low temperatures and can, therefore effect good cleaning.

In Comparative Example 1, polycarbonate resin of a viscosity average molecular weight of 5.times.10.sup.3 was used as the binding resin of the charge transporting layer 13 of the photosensitive drum 1 and therefore, the friction property became high and a smeared image...

FIG. 4 shows a vertical cross-sectional view of a process cartridge taken in a direction perpendicular to the axis of the photosensitive drum.

The feature of the present embodiment is that the photosensitive drum 1 and cleaning blade 6a described in Embodiment 1 are integrally incorporated into a cartridge container 15 to thereby construct a process cartridge detachably attachable with respect to the main body of an image forming apparatus. In the process cartridge 16 shown in FIG. 4, the photosensitive drum 1, the charging device 2, the developing device 4 and the cleaning device 6 are integrated to thereby construct the process cartridge 16.

This process cartridge 16 is mounted on the main body of an image forming apparatus provided with a power source for driving the photosensitive drum 1, etc., and a high voltage circuit for supplying a bias for forming an image, and a toner image is formed on the photosensitive drum 1.

The toner image formed on the photosensitive drum 1 is transfe...