| http://www.w3.org/ns/prov#value | - recording head drive period into n segments (where n is an integer that is 2 or greater) and outputting a pulse signal whose cycle Tp is larger than the Helmholtz cycle Tc in synchronism with a dot forming signal from outside; and a circuit constant adjusting means for adjusting a time constant of at least one of the first and second drive signal outputting means in such a manner that an ink
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