Patent ID: 6089690
Filing Date: 2000-07-18
Classification: B41J

Abstract:
A driving apparatus adapted for use with an inkjet printer, said inkjet printer including a pressure applying device adapted for applying pressure to ink, accommodated in an ink chamber, in accordance with a pulse signal applied by said driving apparatus,said driving apparatus adapted for applying a first pulse signal, a second pulse signal and a third pulse signal to said pressure applying device in sequence as recited,wherein each of said first pulse signal and said third pulse signal is adapted for ejecting an ink drop from said ink chamber,wherein said second pulse signal is adapted for reducing a reflected wave in said ink chamber induced by said pressure applying device applying said first pulse signal, andwherein timing of application of said first pulse signal, said second pulse signal and said third pulse signal satisfies the following formulas:T0>T3.gtoreq.T2>T1,T2.gtoreq.2.times.T1, andT3.gtoreq.3.times.T1whereinT0 is a time period measured from a start of application of said first pulse signal to a start of application of said third pulse signal,T1 is a pulse width of said first pulse signal,T2 is a time period measured from an end of application of said first pulse signal to a start of application of said second pulse signal, andT3 is a time period measured from an end of application of said second pulse signal to the start of application of said third pulse signal.