B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
B41J 2/175 (2006.01) B41J 2/17 (2006.01) B41J 2/185 (2006.01) B41J 2/19 (2006.01)
Patent
CA 2292078
An ink tank apparatus having a reservoir for containing ink, is improved to control or eliminate the harmful effects of foaming, misting and splatter of ink in the ink tank. A fluid pump delivers ink to a printer system, having an associated reservoir, and a vacuum means acts on the reservoir to return unused ink from the printer to the reservoir. The returning ink is caused to enter the reservoir at an angle so the returned ink tends to stay near a surface of the reservoir ink level. In particular a ramp or series of ramps are provided along which the returning ink travels. Furthermore, the returned ink is ported into a confined inlet chamber from which the returned ink drains into the ink tank, and the returned ink is ported into this confined inlet chamber so as to produce a vortex-like flow in the inlet chamber. A drain port from the inlet chamber can be restricted to reduce pulsations in the returned flow, and baffles can be used to inhibit the flow of mist to the vacuum port of the ink tank.
Gamble Bruce W.
Musser Marshall R.
Dimock Stratton Clarizio Llp
Scitex Digital Printing Inc.
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