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High density nozzle array for inkjet printhead

  • US 5,638,101 A
  • Filed: 10/06/1994
  • Issued: 06/10/1997
  • Est. Priority Date: 04/02/1992
  • Status: Expired due to Term
First Claim
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1. A printing system having an array of nozzle orifices in a printhead comprising:

  • a supply of ink in an ink reservoir;

    a substrate on the printhead, said substrate having at least approximately 300 ink firing chambers with an ink firing element in each of said ink firing chambers, said ink firing chambers spaced apart from each other a predetermined distance so as to provide printing of at least approximately 600 dots per inch in a single pass of the printhead across a medium;

    an ink channel connecting said reservoir with said ink firing chambers; and

    first circuit means on said substrate connected to each ink firing element for selectively firing ink firing elements in said ink firing chambers,wherein said ink firing chambers are arranged in at least two arrays, with said at least two arrays firing the same color of ink, andwherein one of said at least two arrays is located along an outer edge of said substrate, and another of said at least two arrays is located along another outer edge of said substrate.

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