US Patent 7443409 Thermal printhead
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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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US Patent 07443409 Thermal printhead US Patent 7443409 Thermal printhead
Infobox
Patent Number
0744340900
Patent Number
744340900
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Official Website
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Infobox
Is a
Patent Jurisdiction
Patent Number
074434090
Date of Patent
October 28, 2008
0Patent Application Number
115876260
Date Filed
April 26, 2005
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
074434090
Date of Patent
October 28, 2008
0Patent Application Number
115876260
Date Filed
April 26, 2005
0Official Website
Patent Primary Examiner
Edits on 14 Jun, 2022
Golden AI
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US Patent 07443409 Thermal printhead
Infobox
Is a
Patent jurisdiction
Patent number
07443409
Date of patent
October 28, 2008
Patent application number
11587626
Date Filed
April 26, 2005
Patent primary examiner
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