| 摘要 |
PURPOSE:To enable ink discharge to be changed through temperature variations by providing a temperature sending means, a heater and an air blower and controlling them electrically based on the temperature sensing readings of a printing head. CONSTITUTION:If a control signal Si from a temperature sensing means 11 indicates 'high humidity' state ('high humidity' signal Si1 is ON), a fan 9 and a heater 7 are set to a low temperature (L), and if the signal indicates 'low humidity' state ('low humidity' signal Si2 is ON), the fan and heater are set to a high temperature H. If the signal indicates neither of them, the fan and heater are set to a normal temperature. Thus the fan and heater are controlled. When controlling the heater 7, the readings of temperature data Tn from a temperature sensing means 8 are obtained after checking the elapse of one second, interpreting whether or not the obtained value is lower than a set temperature. If it is lower, the heater 7 is set to 'drive ON' for heating. A blower 9 is also controlled by reading temperature data from the temperature sensing means 8, interpreting whether or not said data is higher than a set temperature. If it is higher, the blower 9 is set to 'drive ON', while, if it is lower, the blower is stopped. Further, it if is not lower, the blower is left operating as it is. |
