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US 2010/0149243 A1Published application
Printhead IC Having Temperature Based Ejection
AssigneeSilverbrook Research Pty Ltd
InventorsJohn Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Kia Silverbrook
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Abstract
A printhead IC is provided having an array of ejection nozzles, sensing circuitry for sensing temperatures of regions of the nozzle array, and drive circuitry for providing drive pulses to the nozzles to cause ejection. The drive circuitry is configured to set a different profile of the drive pulses for each region of the nozzle array in accordance with the sensed temperatures.
Claims4
A printhead IC comprising:
- an array of ejection nozzles;
- sensing circuitry for sensing temperatures of regions of the nozzle array;
- and
- drive circuitry for providing drive pulses to the nozzles to cause ejection, the drive circuitry being configured to set a different pulse profile of the drive pulses for each region of the nozzle array in accordance with the sensed temperatures.
1 more element
Dependencies are inferred from the claim text.