Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to condition of coating material
Patent
1990-05-03
1993-02-02
Lovering, Richard D.
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to condition of coating material
118690, 118693, 118694, 118602, 118661, 137263, 137566, 137567, 137571, B05C 1100
Patent
active
H00011355
ABSTRACT:
A toner solution circulation apparatus controls the application, concentration, and circulation by pumping of toner solution for an electrostatic imaging system by using a vacuum to draw toner solution, which is selectively mixed with concentrated toner solution and clear isopar, from a mixer manifold, and by using the rotating action of an applicator roll to pump, circulate, and mix toner solution, pigment, and isopar. A float and pivot block assembly maintains the correct isopar solution level in the chamber.
A tube pump apparatus, having two tubes, one inside the other with sliding seals between the tubes, each tube having a ball type check (foot) valve at its end is submerged in concentrated toner solution in a supply container or bottle, to add pigment to the toner soltuion.
The cycle time of the pump stroke is monitored by a Hall effect sensor.
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Anthony Joseph D.
Lovering Richard D.
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