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Printhead having relatively dimensioned ejection ports and arms

  • US 8,029,102 B2
  • Filed: 02/08/2011
  • Issued: 10/04/2011
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
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1. A printhead comprising:

  • chambers for fluid;

    ejection ports defined in the chambers; and

    ejection arms positioned in the chambers, each arm having a displacement area which is displaced against fluid in the respective chamber to eject the fluid from the respective ejection port, each displacement area being greater than half an area of the respective ejection port and less than twice the area of that ejection port.

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