| 摘要 |
PURPOSE:To eliminate a forced cooling and to provide a rapid, positive response of high fidelity in a liquid pressure control recording method by a heating of recording liquid in which air bubbles generated by heating whose mean value of volumetric change rate is set at a specified one. CONSTITUTION:When the liquid drip is discharged from the orifice 5, the heat generated at the thermal resistance layer 11 shows a higher rate of thermal conduction at the thermal acting part 7 than the thermal conduction at the base plate 3, and after the energization toward the thermal resistance layer 11 i.e. discharging of the liquid drip is made, the heat generated at the thermal acting part 7 and the thermal generating part 8 is rapidly discharged to the base plate 3, both liquid at the thermal acting part 7 and the generated air bubbles are rapidly cooled. That is, when the mean value of rate of volumetric change of air bubbles when heated is more than 5X10<3>sec<-1>, an attenuation curve of the air bubbles volume in case electrical signal is OFF may be effectively made sharp without using any special cooling means. |
