| 摘要 |
PURPOSE: To prevent a crack due to a stress, thereby preventing leakage of ink. CONSTITUTION: An external plastic frame member 78 is formed from a comparatively rigid engineering plastic and an internal plastic frame member 68 which is formed from a copolymer mixed composition by injection molding is formed to an inner circumference of the external plastic frame member 78. An external frame structure body is constituted of the external plastic frame member 78 and internal plastic frame member 68. An ink reservoir 62 is formed in the internal plastic frame member 68. First and second ink reservoir films 64, 66 each made from ethylene-vinyl acetate are combined with the material of the internal plastic frame member 68 at the portion of the ink reservoir 62, then a leakage-resistance bonding is applied to the internal plastic frame member 68. |
