| 摘要 |
An ink jet recording apparatus (100) includes a feeder for feeding a recording medium (10); a carriage (2) reciprocally movable relative to the recording medium (10); an ink jet recording head (1) detachably mountable on the carriage (2) and having electrothermal transducers for producing thermal energy contributable to ejection of recording ink through ejecting outlets thereof, the recording head (1) has an ejection outlet information setting portion wherein a number and a pitch of the ejection outlets of the ink jet recording heads are set; and control circuit for detecting the ejection outlet information in the ejection outlet information setting portion, for discriminating the number and the pitch of the ejection outlets from the detected ejection outlet information, and for determining ejection timing of the recording head (1) and a feed pitch of the recording medium (10) by said feeder on the basis of the number of the pitch of the ejection outlets.
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