| 摘要 |
<p>By forming an outer wall over a space (25) around an ink storage chamber (24) of an ink cartridge (21) or by providing convexities (59) arranged at intervals of not more than 10 mm on an outer surface of a housing which forms the ink storage chamber (53), a possible ink recharging hole provided in the housing is prevented from being sealed. Different kinds of ink cartridges are manufactured which have different inner compositions which cannot be discriminated in appearance. Any desired ink cartridges are selected randomly from those manufactured ones and shipped. This prevents the user from recharging any one of the ink cartridges with an ink from an unreliable source through a possible hole formed in the wall of the ink cartridge to thereby prevent a print head and/or printer from malfunctioning.</p> |
