Negative pressure ink supply system
AssigneeZhejiang Gongzheng Technology Development Co., Ltd
InventorWenyuan Zhang
Life of this patent
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Abstract
A negative pressure ink supply system includes (1) a primary ink cartridges, (2) a secondary ink cartridges, which are connected by means of an ink tubes with the negative pressure ink cartridge assemblies provided between the secondary ink cartridges and the jet head. The ink, pumped from the primary ink cartridge, is put into the secondary ink cartridge, wherein it is supplied to the negative pressure ink cartridge and then in turn from the negative pressure ink cartridge to the jet head. The liquid level in the secondary cartridge is lower than the jet head surface and adjustable. The negative pressure ink supply system is suitable for image-printing equipment by supplying liquid ink, such as large format machines, portrait machines, plotters, etc.
Claims9
A negative pressure ink supply system comprising:
- a plurality of primary ink cartridges;
- a plurality of ink pumps;
- a plurality of secondary ink cartridges;
- a plurality of jet heads;
- a negative pressure ink cartridge assembly having a plurality of negative pressure ink cartridges provided between the plurality of secondary ink cartridges and the plurality of jet heads;
- each corresponding primary ink cartridge, ink pump, secondary cartridge, negative pressure ink cartridge and jet head being connected in serious by ink tubes;
- each liquid level in the plurality of secondary ink cartridges being lower than each surface of the plurality of jet heads and being adjustable;
- each negative pressure ink cartridge having:
- a tee valve, a cleaning solution tube and a jet head ink tube, which are located its outlet,
- a screw plug being set on top of the negative pressure ink cartridge and being used in conjunction with an air extract opening of the negative pressure ink cartridge,
- a feed-through link being used to facilitate passing of ink or cleaning solution and to assemble the plurality of negative pressure ink cartridges together;
- a joint of ink inlet for the ink tube connecting the negative pressure ink cartridge and the secondary ink cartridge;
- and
- an orifice is provided on a surface of the negative pressure ink cartridge.
Dependencies are inferred from the claim text.