Printhead integrated circuit with actuators proximate exterior surface
First Claim
Patent Images
1. An inkjet printhead comprising:
- an array of droplet ejectors supported on a printhead integrated circuit (IC), each of the droplet ejectors having a respective nozzle aperture and a thermal bend actuator for ejecting a droplet of ink through the nozzle aperture;
whereinthe thermal bend actuator in each of the droplet ejectors is a cantilever beam configured to generate a pressure pulse in a quantity of ink adjacent the respective nozzle aperture, wherein each thermal bend actuator comprises a metal alloy beam having a serpentine configuration.
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Abstract
An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The actuator in each of the droplet ejectors is configured to generate a pressure pulse in a quantity of ink adjacent the nozzle aperture, the pressure pulse being directed towards the nozzles aperture such that the droplet of ink is ejected through the nozzle aperture. The actuator is positioned in the droplet ejector such that it is less than 30 microns from an exterior surface of the printhead surface layer.
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Citations
1 Claim
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1. An inkjet printhead comprising:
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an array of droplet ejectors supported on a printhead integrated circuit (IC), each of the droplet ejectors having a respective nozzle aperture and a thermal bend actuator for ejecting a droplet of ink through the nozzle aperture;
whereinthe thermal bend actuator in each of the droplet ejectors is a cantilever beam configured to generate a pressure pulse in a quantity of ink adjacent the respective nozzle aperture, wherein each thermal bend actuator comprises a metal alloy beam having a serpentine configuration.
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Specification
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Current AssigneeMemjet Technology Ltd. (Memjet Limited)
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Original AssigneeZamtec Limited (Memjet Limited)
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InventorsSilverbrook, Kia
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Primary Examiner(s)UHLENHAKE, JASON S
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Application NumberUS12/501,468Publication NumberTime in Patent Office1,304 DaysField of Search347/42, 347/58, 347/54, 347/9US Class Current347/54CPC Class CodesB41J 2/14427 Structure of ink jet print ...B41J 2/1626 etchingB41J 2/1631 photolithographyB41J 2/1642 thin film formation by CVD ...B41J 2/1648 Production of print heads w...B41J 2202/11 characterised by specific g...
