Patent ID: 6179411
Filing Date: 2001-01-30
Classification: B41J

Abstract:
An ink jet recording head comprising:a discharge port for discharging ink;two electrothermal converting elements for generating thermal energy utilized for discharging said ink; andan ink flow path provided with said two electrothermal converting elements, at a same time, being conductively connected with said discharge port,wherein said ink jet recording head has a first discharge mode for discharging liquid droplets from said discharge port when the electrothermal converting element on a side nearer to the discharge port, of said two electrothermal converting elements, receives driving signals to generate said thermal energy, a second discharge mode for discharging liquid droplets from said discharge port in a larger discharge amount than that of said first mode when both of said two electrothermal converting elements receive driving signals to generate said thermal energy, andwherein of said two electrothermal converting elements, a length of said electrothermal converting element on a side farther away from said discharge port in an ink discharge direction is shorter than that of the other electrothermal converting element.