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Preparatory head drive method for an ink jet printer

Image Number 4 for United States Patent #5673071.

A preparatory head drive method for an ink jet printer having heads each including a plural number of nozzles. In the method, a discharging, preparatory drive method for effecting the head temperature rise by driving the nozzles so as to discharge ink and a heating, preparatory drive method for effecting the same by driving the nozzles to such an extent as not to discharge ink are alternately executed.

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