| 摘要 |
A multicolor-use ink cartridge 1 has obverse surface-side ink chambers 5 ( 1 ) and 5 ( 2 ) formed on an obverse surface side of a horizontal plate portion 31 of a rigid plastic plate 3 and reverse surface-side ink chambers 6 ( 1 ) and 6 ( 2 ) formed on a reverse surface side thereof. Since these ink chambers are arranged in a breadthwise direction so as to be staggered in a mutually overlapping state with the horizontal plate portion 31 interposed therebetween, it is possible to make small the dimension in a direction in which the ink chambers are arranged. The respective ink chambers are formed by joining flat portions 53 b to 64 b of three-dimensionally molded flexible plastic films 53, 54, 63 , and 64 to obverse surface-side recesses 51 and 52 formed on the obverse surface of the horizontal plate portion 31 and reverse surface-side recesses 61 and 62 formed on the reverse surface thereof, respectively. Therefore, it is possible to form ink chambers having high sealability.
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