Method for printing
First Claim
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1. A method for printing comprising:
- providing an ink delivery system including a plurality of flow-through print heads, each print head in direct fluid communication by conduit or passageway with a print head supply tank and a print head outlet tank;
providing a pressure differential across the plurality of print heads to cause unjetted ink to flow through the print heads and into one of the print head supply tank and the print head outlet tank, such that ink can be controllably jetted from the print head irrespective of the orientation of the print head with respect to the direction of the force of gravity;
controlling or adjusting the pressure differential to maintain a substantially constant meniscus pressure at the plurality of print heads; and
including changing the position or orientation of one or more of the plurality of print heads.
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Abstract
A method of printing including providing an ink delivery system including a print head in fluid communication between a first tank and a second tank; and providing a pressure differential across the print head to cause ink to flow from the print head. With embodiments of the method, ink can be controllably dispensed from the print head at substantially the same velocity irrespective of the orientation of the print head with respect to the direction of the force of gravity.
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Citations
20 Claims
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1. A method for printing comprising:
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providing an ink delivery system including a plurality of flow-through print heads, each print head in direct fluid communication by conduit or passageway with a print head supply tank and a print head outlet tank; providing a pressure differential across the plurality of print heads to cause unjetted ink to flow through the print heads and into one of the print head supply tank and the print head outlet tank, such that ink can be controllably jetted from the print head irrespective of the orientation of the print head with respect to the direction of the force of gravity; controlling or adjusting the pressure differential to maintain a substantially constant meniscus pressure at the plurality of print heads; and including changing the position or orientation of one or more of the plurality of print heads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification