Abstract: An optical touch panel includes: a pair of retroreflective plates that are arranged inside at least a left and right pair of frame portions facing each other in a rectangular frame; a plurality of detectors that are arranged at four corners of the rectangular frame, the detectors being configured to irradiate infrared rays to, at least, the retroreflective plates, and to generate detection images based on reflection light from the retroreflective plates; and an operation determining unit configured to detect a touch position based on the detection images generated by the detectors.

Abstract: An optical operating input detection apparatus includes: a detection unit configured to optically detect an operating input by the operating unit on respective first and second detection layers, the first detection layer extending in parallel with a display area surface on the display panel to be spaced a predetermined distance away from the display area surface and having a surface area including the display area surface, the second detection layer being disposed between the display area surface and the first detection layer and having a surface area identical to the surface area of the first detection layer; and an operation determination unit configured to determine operating detail of the operating unit based on a detected image on the respective first and second detection layers.

Abstract: An optical touch panel includes: a pair of retroreflective plates that are arranged inside at least a left and right pair of frame portions facing each other in a rectangular frame; a plurality of detectors that are arranged at four corners of the rectangular frame, the detectors being configured to irradiate infrared rays to, at least, the retroreflective plates, and to generate detection images based on reflection light from the retroreflective plates; and an operation determining unit configured to detect a touch position based on the detection images generated by the detectors.

Abstract: An optical operating input detection apparatus includes: a detection unit configured to optically detect an operating input by the operating unit on respective first and second detection layers, the first detection layer extending in parallel with a display area surface on the display panel to be spaced a predetermined distance away from the display area surface and having a surface area including the display area surface, the second detection layer being disposed between the display area surface and the first detection layer and having a surface area identical to the surface area of the first detection layer; and an operation determination unit configured to determine operating detail of the operating unit based on a detected image on the respective first and second detection layers.

Abstract: According to an aspect of the present invention, a power supply device includes: a DC power supply that outputs a DC voltage; an AC power supply that outputs any one of the DC voltage and a superimposed voltage being the DC voltage with an AC voltage superimposed thereon; and a bypass capacitor that charges a part of a voltage that is output from the AC power supply. The DC power supply starts outputting the DC voltage in a constant voltage mode and, when a predetermined condition is satisfied, switches from the constant voltage mode to a constant current mode to output the DC voltage in the constant current mode.

Abstract: According to an aspect of the present invention, a power supply device includes: a DC power supply that outputs a DC voltage; an AC power supply that outputs any one of the DC voltage and a superimposed voltage being the DC voltage with an AC voltage superimposed thereon; and a bypass capacitor that charges a part of a voltage that is output from the AC power supply. The DC power supply starts outputting the DC voltage in a constant voltage mode and, when a predetermined condition is satisfied, switches from the constant voltage mode to a constant current mode to output the DC voltage in the constant current mode.

Abstract: A detecting unit detects a usage state of a charge storage unit for each predetermined time period. A setting unit determines whether the usage state of the charge storage unit satisfies a predetermined condition for each time period, and when it is determined that the usage state satisfies the predetermined condition, sets a corresponding time period as a charge-use permitted time. A control unit determines whether a current time falls in the charge-use permitted time, and when it is determined that the current time falls in the charge-use permitted time, allows a discharging unit to discharge the charge storage unit.

Abstract: A plurality of heating units generates a heat by an alternating-current power supplied from a corresponding alternating-current power supply unit through a corresponding input terminal and supplying the heat to a fixing unit that fixes a toner image transformed on a recording paper by heating. A plurality of power control units controls the alternating-current power to a corresponding heating unit. A plurality of detecting units detects a reference phase of waveform of the alternating-current power. A control unit individually controls the power control units based on detected signals output from the detecting units.

Abstract: An image forming apparatus includes two AC power input cords to be connected to an AC power source. The image forming apparatus can detect if at least one of the two AC power input cords is not connected to the AC power source. An input voltage detector or a zero-cross signal detector receives an input from the one AC input power cord, and detects a voltage state of connection to the AC power input cord. A controller utilizes signals from the input voltage detector or zero-cross signal detector to detect whether the one AC input power cord is connected to the AC power source. An operator can also be provided an indication if it is determined that the one AC power input cord is not connected to the AC power source.

Abstract: A detecting unit detects a usage state of a charge storage unit for each predetermined time period. A setting unit determines whether the usage state of the charge storage unit satisfies a predetermined condition for each time period, and when it is determined that the usage state satisfies the predetermined condition, sets a corresponding time period as a charge-use permitted time. A control unit determines whether a current time falls in the charge-use permitted time, and when it is determined that the current time falls in the charge-use permitted time, allows a discharging unit to discharge the charge storage unit.

Abstract: A plurality of heating units generates a heat by an alternating-current power supplied from a corresponding alternating-current power supply unit through a corresponding input terminal and supplying the heat to a fixing unit that fixes a toner image transformed on a recording paper by heating. A plurality of power control units controls the alternating-current power to a corresponding heating unit. A plurality of detecting units detects a reference phase of waveform of the alternating-current power. A control unit individually controls the power control units based on detected signals output from the detecting units.

Abstract: An image forming apparatus includes two AC power input cords to be connected to an AC power source. The image forming apparatus can detect if at least one of the two AC power input cords is not connected to the AC power source. An input voltage detector or a zero-cross signal detector receives an input from the one AC input power cord, and detects a voltage state of connection to the AC power input cord. A controller utilizes signals from the input voltage detector or zero-cross signal detector to detect whether the one AC input power cord is connected to the AC power source. An operator can also be provided an indication if it is determined that the one AC power input cord is not connected to the AC power source.