Methods and apparatus for inkjet nozzle calibration
First Claim
Patent Images
1. A method of calibrating inkjet print nozzles comprising:
- dispensing a plurality of ink drops onto a surface with one or more inkjet print nozzles at a firing pulse voltage;
measuring a parameter of the ink drops; and
, calibrating the firing pulse voltage of at least one of the one or more inkjet print nozzles based on the measured parameter of the ink drops.
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Abstract
Methods and apparatus are provided for calibrating inkjet print nozzles that include dispensing a plurality of ink drops onto a surface with one or more inkjet print nozzles at a firing pulse voltage, measuring a parameter of the ink drops, and calibrating the firing pulse voltage of at least one of the one or more inkjet print nozzles based on the measured parameter of the ink drops.
111 Citations
32 Claims
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1. A method of calibrating inkjet print nozzles comprising:
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dispensing a plurality of ink drops onto a surface with one or more inkjet print nozzles at a firing pulse voltage;
measuring a parameter of the ink drops; and
,calibrating the firing pulse voltage of at least one of the one or more inkjet print nozzles based on the measured parameter of the ink drops. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 22, 23, 24)
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14. A system for calibrating an inkjet print nozzle comprising:
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one or more inkjet print nozzles, the inkjet print nozzles adapted to dispense ink drops in response to a firing pulse voltage;
an imaging system adapted to measure a parameter of the dispensed ink drops; and
a controller adapted to correlate the measured parameter of the dispensed ink drops with the firing pulse voltage and pass a signal indicative of the firing pulse voltage to the inkjet print nozzles so as to cause the nozzles to dispense ink drops with substantially the expected value of the measured parameter. - View Dependent Claims (15, 16, 17, 18)
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19. An apparatus for calibrating an inkjet printing system comprising:
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logic including a processor;
memory coupled to the logic; and
a fire pulse generator circuit coupled to the logic and including a connector to facilitate coupling to a inkjet print nozzle, wherein the logic is adapted to receive ink drop measurement data, the logic is further adapted to convert the ink drop measurement data to an ink drop measurement data file adapted to be used to trigger the inkjet print nozzle to deposit ink into pixel wells on a substrate with a firing pulse voltage.
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20. A method of calibrating inkjet print nozzles comprising:
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dispensing a plurality of ink drops onto a surface with one or more inkjet print nozzles at a firing pulse voltage;
determining a size of the ink drops; and
,calibrating a firing parameter of at least one of the one or more inkjet print nozzles based on the size of the ink drops. - View Dependent Claims (21, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification