Abstract: A power control apparatus to control power supplied to a load with a predetermined desired voltage level includes a first switch to selectively output a first power to the load, a voltage drop of the first power being less than a predetermined value to meet the desired voltage level, a second switch to selectively output a second power which is different from the first power to the load, a voltage drop of the second power being less than a predetermined value to meet the desired voltage level, and a controller to control the first switch and the second switch to output one of a higher input voltage value from the first power and the second power to the load.

Abstract: A print medium feeding cassette and an image forming apparatus having the print medium feeding cassette are provided. The print medium feeding cassette includes a cassette frame having an inner space in which a print medium is stacked. The print medium is discharged from the inner space through an opening at one side of the cassette frame. A cleaning member is disposed proximal the opening to remove foreign substances from the surface of the print medium.

Abstract: Provided is a thermal print head having a memory for storing resistance values of heaters to compensate for an energy drift of the thermal print head. The thermal print head includes a plurality of heaters for applying heat to a medium. A heater driving unit drives the heaters according to received data. A memory stores resistance values of the heaters.

Abstract: A wireless telephone set having a cordless handset and a base unit incorporating a facsimile apparatus. The cordless handset comprises a transmission mode key and a reception mode key which may be activated by a user of the cordless handset for controlling the facsimile apparatus in order to transmit or receive facsimile data. A voice mixer is provided which stores a plurality of messages to be read out and processed in order to transmit an aural message to the cordless handset under the control of a control unit in accordance with specific codes indicating the current status of the facsimile apparatus.