| 摘要 |
PURPOSE:To provide the titled device capable of compensating the change of ink by the passage of time such as the density, viscosity of recovered ink due to the evaporation of solvent, etc. by such a simple composition wherein ink solvent can be properly supplied in response to the length of operating time of a printer. CONSTITUTION:Diluent (a) is supplied at a specified pressure to the liquid chamber of a head 5 from a discharge hole provided at the lower part of the side wall of a container 7 through a valve 8. A circular nozzle 5a and an electrostrictive element 5b are provided in the head 5, and an elastic membrane 5c which is reduced in hardness by the rise of temperature and, in turn, compensates an increase in the amount of evaporation in conjunction with the rise of temperature by increasing the amount of jet per one ink drop to be spouted from the nozzle 5a is closely adhered to the electrostrictive element 5b. As long as signals are continuously given from a drive circuit 1, a timer 2 repeatedly generates signals at a specified interval, and sets a flipflop circuit 3 which impresses a specified voltage on the electrostrictive vibrator. |
