Photosensitive drum for electrostatic copying apparatus

Details Photosensitive drum for electrostatic copying apparatus Photosensitive drum for electrostatic copying apparatus

1981-10-22

1983-08-23

Prescott, A. C.

Photocopying

Including fiber optics

29123, G03G 1500

Patent

active

044000774

ABSTRACT:
A photosensitive drum assembly for an electrostatic copying apparatus includes a cylindrical drum having a photosensitive layer provided around its outer periphery. The drum is held between a pair of flanges at opposite axial ends of the drum. Each of the flanges is formed having a diameter larger than the external diameter of the drum. At the edge of each flange, is a cylindrical portion extending along the axis of the drum to face toward the opposite flange. The end edges of the drum closely fit into the cylindrical portions. According to the present invention, since the edges of the drum closely fit into the cylindrical portions of the flanges, it is not necessary to improve the dimensional accuracy of the inside periphery of the opposite ends of the drum, while it is essential to improve the dimensional accuracy in a conventional manner.

REFERENCES:
patent: 3615131 (1971-10-01), Sable et al.
patent: 3955889 (1976-05-01), Ishiguro et al.
patent: 4134667 (1979-01-01), Schnall et al.
patent: 4239375 (1980-12-01), Eisbein et al.
patent: 4344700 (1982-08-01), Kasama et al.

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