Pneumatic charge director dispensing apparatus

Details Pneumatic charge director dispensing apparatus Pneumatic charge director dispensing apparatus

1987-09-03

1988-11-15

Grimley, Arthur T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

430115, G03G 1510

Patent

active

047853271

ABSTRACT:
The disclosure is directed to liquid electrophotographic copying equipment and more particularly to an apparatus to dispense a liquid charge director composition to a reservoir that contains a liquid developer composition. Generally, the apparatus comprises a charge director reservoir including a pressure cell arranged below the liquid level of the charge director reservoir. The pressure cell has a volume to contain a predetermined amount of liquid charge director composition. The pressure cell is provided with an opening to permit a flow of liquid charge director composition from the charge director reservoir and into the interior of the pressure cell and vice versa. A tubular conduit extends from the interior of the pressure cell to the reservoir that contains the liquid developer composition to provide fluid communication therebetween. A controlled pulse of air is directed into the interior of the pressure cell to force all of the liquid charge director composition within the pressure cell from the pressure cell, with portions of the liquid charge director composition flowing through each of the opening and the tubular conduit. Pursuant to the invention, the ratio of the diameter of the opening to the diameter of the tubular conduit is fixed such that the controlled pulse of air causes a preselected amount of liquid charge director composition to flow through the tubular conduit and into the reservoir that contains the liquid developer composition and causes the remaining portion of the liquid charge director composition to flow through the opening and into the charge director reservoir.

REFERENCES:
patent: 3392708 (1966-09-01), Hunstiger
patent: 3862849 (1975-01-01), Kasuya
patent: 4614699 (1986-09-01), Kitatani

Affiliated with

Also associated with

Rating

Pneumatic charge director dispensing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pneumatic charge director dispensing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic charge director dispensing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1106119