Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 28, 2008
Patent Application Number
11587626
Date Filed
April 26, 2005
Patent Primary Examiner
Patent abstract
A thermal printhead (A) according to the present invention includes a heating resistor (5) formed on a substrate (1), an electrode (3) for energizing the heating resistor (5), and a protection film (6) for covering the heating resistor (5) and the electrode (3). The protection film (6) has a surface with a ten-point mean roughness of no smaller than 0.2 μm.
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