The thermal printer head detecting device does not need a special power supply, thus simplifying the circuits of the detecting device obviously and reducing the cost.
本发明提供的热打印头检测装置不需要设置专用电源，使该检测装置的电路显著简化，降低了成本。
The thermal printer head detecting device does not need a special power supply, thus simplifying the circuits of the detecting device obviously and reducing the cost.
本发明提供的热打印头检测装置不需要设置专用电源，使该检测装置的电路显著简化，降低了成本。
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