| 摘要 |
Method of and apparatus for driving, in accordance with a recording signal, a thermal head including a plurality of heating blocks each having M aligned heating elements (M: a positive integer), the amplitude of the recording signal being at a low level or at a high level, in which the number of occurrences of the high level in the recording signal is counted and a block drive signal is produced when the counted number reaches a pre-set value K (K: a positive integer larger than M), the sum of the number of occurrences of the high level and that of the low level in that signal portion of the recording signal within which the high level occurs K times being N, and the number P (P: a positive integer) of successive heating blocks is determined to simultaneously enable the heating elements of the P successive heating blocks in accordance with that signal portion of the recording signal within which the high level occurs not more than K times where PXM</=N< (P+1)XM.
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