| 摘要 |
A printer has a replaceable cartridge (ink pack), a recording head, and a control section. The recording head ejects ink supplied by the cartridge through a nozzle. The control section detects the retaining amount of the ink in the cartridge and the environmental temperature in the proximity of the printer. Further, the control section sets a threshold value, with reference to which it is determined whether the cartridge needs be replaced by a unused cartridge, to a lower value as the detected environmental temperature becomes higher.
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