Abstract: Disclosed is a structure having a superhydrophobic and amphiphilic (oleophilic) surface and a fabrication method thereof. A polymer surface body disclosed herein may include high aspect ratio nanostructures on a surface thereof, wherein an aspect ration of the high aspect ratio nanostructure is 1 to 100, and may include a hydrophobic thin film on the high aspect ratio nanostructure. A method of fabricating a polymer surface body disclosed herein may include performing a surface modification treatment on a polymer to form a high aspect ratio nanostructure having an aspect ration of 1 to 100, and forming a hydrophobic thin film on a surface containing the nanostructures.

Abstract: A resin dispenser for nano-imprinting includes a housing including a lower chamber in which a resin is filled, a slit defined in a lower part of the lower chamber and through which the resin is discharged, and an upper chamber in which a pressure-applying fluid is filled, and a membrane separating the lower and upper chambers from each other, and of which an edge is fixed on a middle part of the housing, where the fluid is configured to apply the pressure to the membrane and protrude the membrane toward the slit of the lower chamber.

Abstract: A resin dispenser for nano-imprinting includes a housing including a lower chamber in which a resin is filled, a slit defined in a lower part of the lower chamber and through which the resin is discharged, and an upper chamber in which a pressure-applying fluid is filled, and a membrane separating the lower and upper chambers from each other, and of which an edge is fixed on a middle part of the housing, where the fluid is configured to apply the pressure to the membrane and protrude the membrane toward the slit of the lower chamber.

Abstract: An image forming apparatus includes a fuser that fuses a paper medium and a fuser control device that controls an AC power supplied to the fuser. The fuser control device includes a phase detecting device that receives an AC voltage, detects zero-crossing points of the AC voltage, outputs a phase detecting signal when the zero-crossing points are detected, and selectively cuts off a flow of AC power into the phase detecting device in response to a mode control signal, a signal generator that generates a phase control signal to control a phase of the AC power supplied to the fuser based on the phase detecting signal, and a temperature controller that controls a temperature of the fuser by controlling the phase of the AC power supplied to the fuser according to the phase control signal.

Abstract: An image forming apparatus includes a fuser that fuses a paper medium and a fuser control device that controls an AC power supplied to the fuser. The fuser control device includes a phase detecting device that receives an AC voltage, detects zero-crossing points of the AC voltage, outputs a phase detecting signal when the zero-crossing points are detected, and selectively cuts off a flow of AC power into the phase detecting device in response to a mode control signal, a signal generator that generates a phase control signal to control a phase of the AC power supplied to the fuser based on the phase detecting signal, and a temperature controller that controls a temperature of the fuser by controlling the phase of the AC power supplied to the fuser according to the phase control signal.

Abstract: Disclosed is a structure having a superhydrophobic and amphiphilic(oleophilic) surface and a fabrication method thereof. A polymer surface body disclosed herein may include high aspect ratio nanostructures on a surface thereof, wherein an aspect ration of the high aspect ratio nanostructure is 1 to 100, and may include a hydrophobic thin film on the high aspect ratio nanostructure. A method of fabricating a polymer surface body disclosed herein may include performing a surface modification treatment on a polymer to form a high aspect ratio nanostructure having an aspect ration of 1 to 100, and forming a hydrophobic thin film on a surface containing the nanostructures.

Abstract: An image forming apparatus includes a fuser that fuses a paper medium and a fuser control device that controls an AC power supplied to the fuser. The fuser control device includes a phase detecting device that receives an AC voltage, detects zero-crossing points of the AC voltage, outputs a phase detecting signal when the zero-crossing points are detected, and selectively cuts off a flow of AC power into the phase detecting device in response to a mode control signal, a signal generator that generates a phase control signal to control a phase of the AC power supplied to the fuser based on the phase detecting signal, and a temperature controller that controls a temperature of the fuser by controlling the phase of the AC power supplied to the fuser according to the phase control signal.

Abstract: A phase detecting device includes a power input unit that receives an AC voltage; a phase detector that detects zero-crossing points of the AC voltage, and outputs a phase detecting signal when the zero-crossing points of the AC voltage are detected; and a power switch that selectively cuts off a flow of AC into the power input unit in response to a mode control signal.

Abstract: A phase detecting device includes a power input unit that receives an AC voltage; a phase detector that detects zero-crossing points of the AC voltage, and outputs a phase detecting signal when the zero-crossing points of the AC voltage are detected; and a power switch that selectively cuts off a flow of AC into the power input unit in response to a mode control signal.

Abstract: A phase detecting device includes a power input unit that receives an AC voltage; a phase detector that detects zero-crossing points of the AC voltage, and outputs a phase detecting signal when the zero-crossing points of the AC voltage are detected; and a power switch that selectively cuts off a flow of AC into the power input unit in response to a mode control signal.

Abstract: A phase controlling device of reduced cost, a fuser controlling device including the phase controlling device, and a phase controlling method. The phase controlling device includes: a first signal generating unit generating an error signal that corresponds to a difference between the reference temperature of the fuser and the actual temperature of the fuser; a pulse generating unit generating a sawtooth wave pulse signal that increases with time during a half period of the AC power; and a control signal generating unit comparing the error signal and the sawtooth wave pulse signal and outputting a phase control signal controlling phase of the AC power. The pulse generating unit generating an increasing sawtooth wave pulse may have a relatively simple circuit configuration relative to that of the pulse generating unit generating a decreasing sawtooth wave pulse, thereby reducing manufacturing costs.

Abstract: A phase controlling device of reduced cost, a fuser controlling device including the phase controlling device, and a phase controlling method. The phase controlling device includes: a first signal generating unit generating an error signal that corresponds to a difference between the reference temperature of the fuser and the actual temperature of the fuser; a pulse generating unit generating a sawtooth wave pulse signal that increases with time during a half period of the AC power; and a control signal generating unit comparing the error signal and the sawtooth wave pulse signal and outputting a phase control signal controlling phase of the AC power. The pulse generating unit generating an increasing sawtooth wave pulse may have a relatively simple circuit configuration relative to that of the pulse generating unit generating a decreasing sawtooth wave pulse, thereby reducing manufacturing costs.

Abstract: A phase detecting device includes a power input unit that receives an AC voltage; a phase detector that detects zero-crossing points of the AC voltage, and outputs a phase detecting signal when the zero-crossing points of the AC voltage are detected; and a power switch that selectively cuts off a flow of AC into the power input unit in response to a mode control signal.

Abstract: Provided is an apparatus and method for controlling the power supplied to a fixing unit included in an image forming device. The power supplied to the fixing unit is controlled by selecting a phase control method and a period control method using a select time or based on a temperature of the fixing unit.