| 摘要 |
PROBLEM TO BE SOLVED: To achieve a reduction in size and cost of an IC integrating channel driving circuits corresponding to multi-channels.SOLUTION: An inkjet head driving device comprises: a channel driving circuit provided so as to correspond to a plurality of channels of an inkjet head, respectively; and a load voltage generation circuit selecting either one voltage from a reference voltage and a driving voltage other than the reference voltage and outputting it. Each channel driving circuit comprises a series circuit and a parallel circuit. The series circuit is obtained by connecting in series a first switching element and a second switching element between a first input terminal to which the reference voltage is applied and a second input terminal to which the driving voltage is applied and by connecting a connection point of the first switching element and the second switching element to an output terminal. The parallel circuit is obtained by connecting in parallel a third switching element and a fourth switching element between a third input terminal to which a voltage output from the load voltage generation circuit is applied and the output terminal of a driving signal. |
