Inkjet Ink System for Handling High Solid Particles Loaded Inks
AssigneeFerro Corporation
InventorsMichael Dorvat, Yaniv Kiffel, Arnon Lewartowski, Oren Suchoi, Omri Ben Harush, Efraim Miklatzky
Life of this patent
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Abstract
The application describes an ink delivery system for an inkjet printer. The system includes a first ink tank operative to supply ink to at least one inkjet printhead and a second ink tank operative to receive ink flown through at least one printhead and not used by at least one printhead. The ink for printing is drawn by low pressure from a first tank through the printhead to a second ink tank. Each of the ink tanks includes a cylindrical tubular segment and a segment with a frustoconical inner section.
Claims21
1-26. (canceled)
An ink delivery system for an inkjet printer, comprising:
- a first ink tank operative to supply ink to at least one inkjet printhead;
- a second ink tank operative to receive ink flowing through the at least one inkjet printhead and not used by said at least one inkjet printhead;
- a negative pressure generator generating a negative pressure between said first ink tank and said second ink tank;
- wherein
- a body of each of the first and the second ink tanks includes a cylindrical segment and a segment with frustoconical inner section;
- and wherein the ink for printing is drawn from the first ink tank through the printhead to the second ink tank.
A method of delivering ink to an inkjet printhead in an inkjet printing system, comprising:
- providing an inkjet printing system including a first ink tank, a second ink tank and at least one inkjet printhead;
- wherein
- at least one of the first and second ink tanks comprises a body including a cylindrical segment and a segment with frustoconical inner section;
- wherein
- each ink tank further comprises a minimum ink level sensor and a maximum ink level sensor;
- wherein
- the minimum ink level sensor operates a pump to transfer ink from the second ink tank into the first ink tank, and
- generating a difference in pressure between the first and the second ink tank;
- wherein the difference in pressure draws ink from the first ink tank through the printhead to the second ink tank.
A method of circulating ink in an inkjet printing system, comprising:
- providing an inkjet printing system including a first ink tank, a second ink tank and at least one inkjet printhead;
- generating a difference in pressure between the first and a second ink tanks and
- wherein the difference in pressure draws ink from the first tank through the printhead to the second ink tank;
- wherein
- the first and second ink tanks each have a body including a cylindrical segment and a segment with a frustoconical inner section;
- wherein
- each ink tank further includes a minimum ink level sensor and a maximum ink level sensor;
- and wherein
- a minimum ink level sensor operates a pump which transfers ink from the second ink tank into the first ink tank.
Dependencies are inferred from the claim text.