Image forming apparatus having weighting material in image beari

Details Image forming apparatus having weighting material in image beari Image forming apparatus having weighting material in image beari

1994-03-18

1995-07-04

Beatty, Robert B.

Photocopying

Contact printing

Light boxes

G03G 1500

Patent

active

054305268

ABSTRACT:
An image forming apparatus includes a rotatable image bearing member including an image bearing layer and a base member for supporting the image bearing layer; a charging member contactable to the image bearing member for electrically charging the image bearing member; a voltage applying device for applying an oscillating voltage to the charging member; a weighting material inside the base member; and an elastic material between the base member and the weighting material. The elastic material has a hardness not more than 70 degrees (JIS-A), a thickness of 1-5 mm and an outer diameter larger by 40-400 microns than an inner diameter of the base member before it is press-fitted into the base member.

REFERENCES:
patent: 4023967 (1977-05-01), McGibbon
patent: 4601963 (1986-07-01), Takahashi et al.
patent: 5017965 (1991-05-01), Hashimoto et al.

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