| 摘要 |
A thermal ink jet recording apparatus includes an ink film (21) having a plurality of apertures (22) for retaining ink and movable along a path in the form of a loop, the ink film having an electrical resistance material (35) extending in a direction perpendicular to the path. A thermal head (3) contacts one of opposite surface of the ink film for applying heat to it corresponding to a pattern to be printed. An ink container (26) is located on the path upstream of the thermal head (3) and contains solid ink which melts when heated, and a device is provided for applying a voltage across the edges of the ink film. In this manner, the heated ink film causes the ink to melt thereby filing apertures (22). The ink film (21) has first and second opposite surfaces. In the first embodiment, the first surface and opposite edge portions of the ink film on both surfaces have an electrical resistance layer (35) while the remaining portions of the second surface have an insulating layer (34). In another embodiment, stripe-like electrical resistance layers (37a, 37b, 37c) are provided on the first surface and on opposite edge portions of the second surface. Finally, in another embodiment, electrical resistance layers (39a, 39b, 39c) are provided on the first surface and on opposite edge portion of the second surface, the resistance layers on the second surface being displaced relative to the electrical resistance layers on the first surface.
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