Patent ID: 6224181
Filing Date: 2001-05-01
Classification: B41J

Abstract:
A liquid discharge recording method utilizing two electrothermal transducing members to be driven independently provided in a liquid path communicating with a discharge opening at respectively different distances OH from said discharge opening, and adapted to discharge liquid by bubble generation caused by heat generation in said electrothermal transducing members, said method comprising:placing an electrothermal transducing member positioned farther from said discharge opening within an area where a ratio v/Vd of a discharge speed v to a discharge amount Vd of the liquid discharged by heating with said electrothermal transducing member remains substantially constant with respect to the distance OH, while placing the other electrothermal transducing member positioned closer to said discharge opening in an area closer to said discharge opening than the above-mentioned range; andrelatively delaying the bubble generation by the electrothermal transducing member positioned farther from said discharge opening by a predetermined time from the bubble generation by the electrothermal transducing member positioned closer to said discharge opening, said predetermined time being variable to vary the discharge amount of the liquid.