Image forming apparatus having means for preventing damage to a

Details Image forming apparatus having means for preventing damage to a Image forming apparatus having means for preventing damage to a

1986-04-29

1987-12-08

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 15, 355 14D, 118652, G03G 2100, G03G 1506

Patent

active

047115556

ABSTRACT:
In initially setting a copying apparatus from a factory at a user's site of installation, an operator first connects the apparatus to power supply. Thereupon, toner density adjusting means in a developing unit is actuated to adjust the toner content of a developing agent in the developing unit to a predetermined value. Then, a discharge lamp glows, and the surface of a photosensitive drum is charged by a main charger. If the drum surface is rotated to reach the developing unit without being exposed to light, a toner is supplied from the developing unit to the surface to form a toner layer thereon. When the toner layer reaches the location of a cleaning blade, the blade engages the drum surface to remove the toner layer thereon. Thus, the toner layer serves as a lubricant, enabling the blade to fit well with the drum surface.

REFERENCES:
patent: 4077711 (1978-03-01), Akamatsu
patent: 4155652 (1979-05-01), Buchan et al.
patent: 4333130 (1982-06-01), Mochizuki et al.
patent: 4396276 (1983-08-01), Murasaki
Patents Abstracts of Japan, vol. 6, No. 203, p. 148 (1081) Oct. 14, 1982 & JP-A 57 111 578, Jul. 12, 1982.
Patent Abstracts of Japan, vol. 7, No. 274, p. 241 (1419) Dec. 7, 1983 & JP-A 58 153 979, Sep. 13, 1983.

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