| 摘要 |
To control deformation of an ink bag in an ink cartridge of an inkjet printer, for the purpose of consuming ink in the ink bag enlarged in terms of size and dimension with not being wasted. On a surface of the ink bag, sheet-like deformation regulation members are provided so as to sandwich a position desired to be deformed therebetween so that the ink bag can be deformed at a predetermined position when ink is consumed and the ink bag contracts.
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