Patent ID: 6478404
Filing Date: 2002-11-12
Classification: B41J

Abstract:
An ink jet printhead, comprising:a printhead substrate including a plurality of thin film layers; three side by side columnar arrays of drop generators formed in said printhead substrate and extending along a longitudinal extent; each columnar array of drop generators providing ink drops of a different color and having at least 96 drop generators separated by an drop generator pitch P; said columnar arrays of drop generators being separated from each other by at most 1060 micrometers; said drop generators producing ink drops having an ink drop volume that enables multi-pass printing of a resolution that is not less than 1/(2P) dpi along a print axis parallel to said longitudinal extent; and three columnar arrays of FET drive circuits formed in said printhead substrate respectively adjacent said columnar arrays of drop generators for energizing said columnar arrays of drop generators.