Ink jet printhead having columnar arrays of transistor drive circuits

摘要

An ink jet printhead is provided. The printhead comprises a printhead substrate including a plurality of thin film layers and at least three side by side columnar arrays of drop generators extending along a longitudinal extent. Each columnar array of drop generators provides ink drops of a different color and has at least 96 drop generators. Each columnar array of drop generators is separated from each other by at most 1060 micrometers. The printhead substrate also includes at least three columnar arrays of transistor drive circuits formed in the printhead substrate respectively adjacent the columnar arrays of drop generators for energizing the columnar arrays of drop generators.