Image forming apparatus with a developing device

Details Image forming apparatus with a developing device Image forming apparatus with a developing device

1988-07-28

1990-01-23

Grimley, Arthur T.

Photocopying

Contact printing

Light boxes

355245, 118694, G03G 1508

Patent

active

048961841

ABSTRACT:
The present invention relates to an image forming apparatus with a developing device in which first and second detecting elements are provided respectively at opposite ends of the device to detect that substantially same amounts of developer are present in both ends. By this, the image forming apparatus is permitted to start image formation only when the developer is evenly dispersed in the both ends of the device.

REFERENCES:
patent: 4338019 (1982-07-01), Terashima et al.
patent: 4477173 (1984-10-01), Kozuka et al.

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