| 摘要 |
Glass including 10-60% by weight of at least one metal oxide selected from the group consisting of Al2O3, MgO, ZrO2, BeO and TiO2 is formed, as a heat-insulator, on a substrate. Plural pairs of electrodes, each laterally facing to the other, are formed on the glass, heating resistors are formed between the electrodes of each pair, and the electrodes and the resistors are covered by a protective layer formed of glass including 10-40% by weight of at least one metal oxide selected from the group consisting of Al2O3 and BeO to complete a thick-film thermal printing head.
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