Thermal head and thermal printer with improved sealability
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United States of America Patent
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Dec 25, 2018
Grant Date -
Jan 18, 2018
app pub date -
Dec 22, 2015
filing date -
Dec 25, 2014
priority date (Note) -
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Abstract
A thermal head includes a substrate, a heat storage layer disposed on the substrate and including a bulging portion, heating elements disposed on the bulging portion, a protective layer disposed on the heating elements, and a covering layer disposed on the protective layer. The covering layer includes a first portion disposed apart from the bulging portion, and a second portion disposed between the bulging portion and the first portion. The height of the second portion from the substrate is smaller than the height of the first portion from the substrate.
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