B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
101/101
B41F 31/16 (2006.01) B41J 2/20 (2006.01)
Patent
CA 1154305
BF&N 7082 INK JET PRINTER HAVING CONTINUOUS INK RECIRCULATION DURING SHUT DOWN Abstract of the Disclosure An ink jet printer includes a fluid supply system for supplying ink through the print head of the printer. The fluid supply system includes a pump arrangement supplying ink to the print head from a supply tank via a fluid supply line. A plurality of ink return lines are connected between the pump outlet and the pump inlet. Each of the ink return lines' includes a flow restriction, with the flow restriction in each line providing a fluid flow impedance which differs from the impedances provided by the other flow restrictions. A valve arrangement connects the pump outlet to selected ones of the ink return lines, to provide means for controlling the flow rate of ink supplied through the ink supply line to the print head. During periods in which the printer is shut down, a substantially reduced ink flow through the print head is continuously maintained at a reduced fluid flow rate and at a reduced fluid pressure.
383148
Gowling Lafleur Henderson Llp
The Mead Corporation
LandOfFree
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