| 摘要 |
An ink cartridge filled with an ink added with an infrared absorption material with a function of absorbing an infrared ray to distinguish the ink from another ink of a same color, the ink cartridge used in a loaded state where the ink cartridge is loaded into a printing apparatus for performing printing, the ink cartridge includes an ink supplying system including a storage portion for storing the ink, an outlet for supplying the ink to the printing apparatus in the loaded state, and a flow path for guiding the ink from the storage portion to the outlet, a light emitter, a sensor including a light receiver disposed in opposition to the light emitter with the ink supplying system intervened therebetween, the light receiver for receiving transmitted light resulting from transmission of emitted light from the light emitter through the ink supplying system, and an ink cartridge-side terminal electrically connected to the sensor, coming in contact with an apparatus-side terminal provided to the printing apparatus in the loaded state, in which the emitted light has a wavelength in an infrared range.
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