Patent ID: 7040727

Claim:
A printer power supply controlling apparatus provided in a printer, comprising: a printer driving power supply which receives power from an external power and generates a voltage for driving the printer; a printer driving power supply controlling unit which controls the printer driving power supply; a switch which is switchable on or off according to a manipulation of a user; a power-off signal detection driving unit which switches off the printer driving power supply in response to a detection of a predetermined printer driving power-off signal; and a switch-on detection transmitting unit which detects whether the user switch is in an on state, and upon detecting that the user switch is in the on state, transmits a switch-on signal to the printer driving power supply controlling unit, wherein: when the switch-on signal is received at the printer driving power supply controlling unit with the printer driving power supply on, the printer driving power-off signal is generated by the printer driving power supply controlling unit and transmitted to the power-off signal detection driving unit so as to turn off the printer driving power supply.