Toner replenishing device with timing control of toner...

Details Toner replenishing device with timing control of toner... Toner replenishing device with timing control of toner...

2006-05-09

2006-05-09

Grainger, Quana (Department: 2852)

Electrophotography

Image formation

Development

Reexamination Certificate

active

07043179

ABSTRACT:
A toner replenishing device having a stable performance without causing variation of the toner suction pressure, even if the toner characteristics vary in a toner vessel in a volume-reducing type toner carrying device. In the toner replenishing device comprising a flexible toner storing vessel, a sucking means for arrying the toner in the toner storing vessel to a prescribed place by a negative pressure, and a substantially airtight toner carrying passage, the toner storing vessel being reduced in volume by sucking the toner, the sucking means is a single-shaft eccentric screw pump, whose operation time is longer than the time for generating a maximum pressure.

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