Inkjet printhead with a plurality of vapor bubble generators
AssigneeSilverbrook Research Pty Ltd
InventorsAngus John North, Samuel James Myers, Kia Silverbrook
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Abstract
The invention provides for an inkjet printhead having a plurality of micro-electromechanical vapor bubble generators. Each bubble generator includes a nozzle in fluid communication with an ink chamber, and a heater positioned in thermal contact with ink in the chamber. Each generator also includes drive circuitry configured to provide a modulated pulse to the heater to generate a vapor bubble in the ink in said chamber, the pulse comprising a pre-heat series of a predetermined number of pulses separated by a predetermined period, followed by a trigger pulse of a period twice that of said predetermined period.
Claims9
An inkjet printhead having a plurality of micro-electromechanical vapor bubble generators each comprising:
- a nozzle in fluid communication with an ink chamber;
- a heater positioned in thermal contact with ink in the chamber;
- and
- drive circuitry configured to provide a modulated pulse to the heater to generate a vapor bubble in the ink in said chamber, the pulse comprising a pre-heat series of a predetermined number of pulses separated by a predetermined period, followed by a trigger pulse of a period twice that of said predetermined period.
Dependencies are inferred from the claim text.