EP 0046385 B1 19851121 - AN INK JET PRINTER, A METHOD OF SHUTTING DOWN THE SAME, A METHOD OF CONTROLLING THE FLOW OF INK TO THE SAME, AND AN INK SUPPLY SYSTEM FOR THE SAME
Title (en)
AN INK JET PRINTER, A METHOD OF SHUTTING DOWN THE SAME, A METHOD OF CONTROLLING THE FLOW OF INK TO THE SAME, AND AN INK SUPPLY SYSTEM FOR THE SAME
Publication
Application
Priority
- US 17832580 A 19800815
- US 18700380 A 19800915
Abstract (en)
[origin: EP0046385A1] An ink jet printer includes an ink supply system for supplying ink through the print head (10) of the printer. The fluid supply system includes a pump arrangement (22) supplying ink to the print head (10) from a supply tank (16) via a fluid supply line (56). A plurality of ink return lines (40, 42, 44) are connected between the pump outlet (26) and the pump inlet (24). Each of the ink return lines includes a flow restriction (46, 48, 50), 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 (52, 54) connects the pump outlet (26) to selected ones of the ink return lines, to provide means for controlling the flow rate of ink supplied through the ink supply line (56) to the print head (10). 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.
IPC 1-7
IPC 8 full level
B41J 2/20 (2006.01)
CPC (source: EP)
B41J 2/20 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0046385 A1 19820224; EP 0046385 B1 19851121; DE 3172988 D1 19860102
DOCDB simple family (application)
EP 81303713 A 19810814; DE 3172988 T 19810814