| 摘要 |
PURPOSE:To make it possible to record an image having excellent faithfulness and certainly in the response to a recording signal and high in resolving power and quality at a high speed, by arranging a partition wall so as to satisfy a specific relation formula when the min. value of the distance between heat acting surfaces measured without piercing the partition wall is set to Lmi and the distance of each heat acting surface and the center of an emitting port corresponding thereto is set to Doh. CONSTITUTION:A current is supplied to a heat generating resistance layer 111 through a selection electrode 112 and a common electrode 114 and heat energy is mainly generated in the heat generating part 16 between the electrodes. Bubbles are generated in a liquid by the heat action in the heat acting surface 115 and the liquid is emitted from an orifice as liquid droplets in a scattered form by the pressure energy of said bubbles to perform recording. An electricity to heat converting element 102 is driven according to a recording signal and signal voltage is supplied in order to emit the liquid droplets from the predetermined orifice 108 through the selected selection electrode 112 and the common electrode 114. When the length of a partition wall 117 is short to such an extent that it does not reach the range shown by the formula, interference action of liquid emission is generated between adjacent orifices and, when the length of said partition wall 117 is long enough to exceed a specific range, following characteristics under high frequency becomes inferior. |
