| 摘要 |
PURPOSE:To control the temperature of a printing head unit rapidly and accurately by providing a heater and a temperature detection means on a printing head and at the same time, a blower inside the recorder. CONSTITUTION:A heater 7 ad a temperature detection means 8 are provided at a required point on the board 5 of a printing head unit 3 i.e. at a position near each printing head element or a point which indicates a temperature corresponding to the temperature of the point for said element. This printing head unit is so designed as to be cooled by a common blower 9 provided inside the recorder. A detection signal from a detection signal is input to a control(microcomputer) of the recorder. Said control regulates the drive of the heater 7 ad the blower 9 according to the temperature signal. Thus the temperature of the printing head is kept within a range of proper ink droplet formation. |
