| 摘要 |
PURPOSE:To reduce the quantity of thermal energy required for heating and melting and shorten the heating time required for melting, by providing a passage filled with a solid ink (solid at normal temperature), a head comprising a conductive material at least at a part of the inner wall of the passage, and an electromagnetic wave oscillator in proximity to the head. CONSTITUTION:A heating element 20 consists of a thin film of chromium, which is provided as follows. After providing a groove part corresponding to the ink passage, chromium is vapor-deposited on the entire surface by sputtering before removing a photoresist remaining at parts other than the groove part. Then, the photoresist is removed to obtain a thin chromium film only at the groove part. Namely, the ink makes contact with the heating element 20 provided on the inner surface of the passage by vapor deposition. With this construction, the period of time and thermal energy required for melting a solid ink are less than those in a system wherein heating is conducted on the outside of the head substrate. To melt the solid ink by heating, the heating element 20 is heated through electromagnetic induction by the electromagnetic wave oscillator 21 fitted in proximity to a glass substrate. |
