Patent ID: 8608265

Claim:
An inkjet printing device, including a spray head for jetting ink and a high-voltage pulse generating device for generating a high-voltage excitation pulse, for controlling the ink jetting of the spray head, by using a synchronization pulse, with said inkjet printing device further including a pulse width control device for controlling widths of the synchronization pulse input into said high-voltage pulse generating device, the pulse width control device comprising: a first monostable multivibrator, for receiving the synchronization pulse, and using said synchronization pulse to generate and output a negative pulse whose width is a first preset threshold; a second monostable multivibrator, for receiving said synchronization pulse, and using said synchronization pulse to generate and output a positive pulse whose width is a second preset threshold; an inverter, for receiving said synchronization pulse, and inverting said synchronization pulse and then outputting an inverted synchronization pulse; and a flip-flop, for receiving said negative pulse, said positive pulse and said inverted synchronization pulse, and generating and outputting a synchronization pulse with a width between said first threshold and said second threshold to said high-voltage pulse generating device.