Method and apparatus for ejecting ink

CAFC
  • US 6,481,817 B1
  • Filed: 10/30/2000
  • Issued: 11/19/2002
  • Est. Priority Date: 10/30/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. An inkjet printhead having a plurality of drop generators responsive to drive current and address signals for dispensing ink, the inkjet printhead comprising:

  • a plurality of subgroups of first and second drop generators disposed on the printhead that together form a group of drop generators with each drop generator of the group of drop generators configured for connection to a drive current source wherein within each subgroup, the first and second drop generators are configured to receive address signals from a common address source, and wherein each subgroup of first and second drop generators is configured for connection to a different source of address signals; and

    a first switching device connected between the common address source and each of the first and second drop generators of a subgroup, the switching device responsive to enable signals for selectively providing the address signal to only one of the first and second drop generators of the subgroup.

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