| 摘要 |
PURPOSE:To reduce mechanical abrasion at the edge section of a recording electrode and to reduce degradation of print quality by forming a hard insulator film between recording electrodes of an electrothermal transfer recording head. CONSTITUTION:Recording electrodes 2 are formed onto an electrode substrate 1 having ceramic base such as alumina or glass base or resin base such as polyimide through thin film method such as sputtering or thick film method such as printing then hard insulating films 3 are formed between the recording electrodes 2. Preferably, tantalum pentaoxide, silicon nitride and the like which are hard and having excellent heat resistance are employed as the material for the hard insulating film 3. When such electrothermal transfer recording head is employed, the amount of ink film biting between the recording electrodes 2 with predetermined tension can be reduced resulting in reduction of mechanical abrasion at the edge section of the recording electrode 2 and reduction of degradation of print quality. |
