Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshiyuki Imanaka0
Takuya Hatsui0
Tatsuo Furukawa0
Teruo Ozaki0
Nobuyuki Hirayama0
Takaaki Yamaguchi0
Date of Patent
October 5, 2010
0Patent Application Number
122706830
Date Filed
November 13, 2008
0Patent Primary Examiner
Patent abstract
A printhead in which the voltage fluctuation absorption range of a MOS transistor serving as a constant current source is narrowed according to constant current driving. The printhead includes a controller which controls voltage fluctuations to adjust a current supplied to a plurality of printing elements. The printhead also includes a DC/DC converter which outputs a voltage of a voltage value to be applied to a plurality of printing elements from outside a printing element substrate.
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