| 摘要 |
PURPOSE:To improve the performance of discharge, and enable stable recording for a prolonged term by making unnecessary bubbles generated contain into liquid drops, discharging them and removing them from a flow path in the titled recording system which ejects a recording liquid as the liquid drops by utilizing thermal energy. CONSTITUTION:Pulse voltage is applied between electrodes 113, 114, a resistance layer 111 positioned between the electrodes is heat-generated and the recording liquid of a thermal operating section 107 on a thermal operating surface 109 is evaporated, the liquid drops of the recording liquid are injected from an orifice 105 by a pressure change generated at that time, and desired characters and symbols are recorded. Bubbles generated per unit pulse are all made contain into the liquid drops and discharged from the orifice 105 together with the liquid drops by making pulse frequency fb approximately (fr)<2>/680 (where fr is the response frequency of the orifice) and the pulse voltage approximately 1.02- 1.3Vth (where Vth is the minimum voltage capable of discharging the liquid drops) in the conditions of discharge and drive in said system. |
