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US 2015/0029250 A1Published application
Inkjet Issue Determination
AssigneeHewlett-Packard Development Company, L.P.
InventorsAndrew L. Van Brocklin, Adam L . Ghozeil, Mark Hunter, Scott A. Linn
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Abstract
Determining an issue in an inkjet nozzle may include activating a drive bubble formation mechanism in an ink chamber to eject an ink droplet through the inkjet nozzle and measuring the drive bubble in the ink chamber after the drive bubble formation mechanism is activated.
Claims15
A method for determining an issue in an inkjet nozzle, comprising:
- activating a drive bubble formation mechanism in an ink chamber to eject a droplet of ink through said inkjet nozzle;
- and
- measuring said drive bubble in said ink chamber after said drive bubble torn mechanism is activated.
An inkjet print head, comprising:
- an ink chamber comprising a drive bubble formation mechanism and an impedance sensor positioned within said ink chamber to detect a presence of a drive bubble;
- said impedance sensor to receive commands from a processor programmed to initiate a drive bubble formation within said ink chamber;
- said processor being programmed to take an impedance measurement within said ink chamber after initiating a drive bubble formation mechanism and to determine if an issue exists in said ink chamber based on said impedance measurement.
A printer, comprising:
- a first nozzle in fluid communication with a first ink chamber, said first ink chamber comprising a first impedance sensor;
- said first impedance sensor being in communication with a processor;
- said processor also being in communication with a first drive, bubble formation mechanism in said first ink chamber;
- said processor programmed to:
- send a firing command to said first drive bubble formation mechanism;
- send a measurement command to first impedance sensor after said firing command;
- and
- determine a presence of a drive bubble within said first ink chamber based on a measurement taken in response to said measurement command.
5 more elements
Dependencies are inferred from the claim text.