Contact charger having a selected perpendicular resistivity

Details Contact charger having a selected perpendicular resistivity Contact charger having a selected perpendicular resistivity

1995-04-27

1996-09-17

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

361225, G03G 1502

Patent

active

055573746

ABSTRACT:
To provide a highly reliable contact type charge unit capable of a creating a uniform charge on a photosensitive layer, a charging member of the charge unit which contacts the photosensitive layer is made from a material having a perpendicular resistivity in a range of between 10.sup.3 to 10.sup.8 .OMEGA.. The perpendicular resistivity is defined by a product of a surface resistivity of the charging member and square of the thickness of the charging member in the current flowing direction.

REFERENCES:
patent: 4371252 (1983-02-01), Uchida et al.
patent: 5384626 (1995-01-01), Kugoh et al.

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