Abstract: Provided are a print head and an image forming apparatus. The print head, which selectively irradiates light to each pixel of an image on a photoconductor, the print head includes an illumination unit, which emits light, a liquid crystal layer, which transmits or intercepts the light incident from the illumination unit on a unit pixel basis according to an applied voltage, and a microlens array formed of liquid crystal polymer, which either focuses or does not focus the light passed through the liquid crystal layer onto the photoconductor.

Abstract: Disclosed are a print head and an image forming apparatus employing the same. The print head, which irradiates light to multiple locations of a photosensitive medium to form pixels of electrostatic latent image, includes an array of light sources corresponding to the pixels, a distributed Bragg reflector disposed adjacent the surface of the light source array from which the light source array output light, and a light focusing unit which focuses the light that have passed through the distributed Bragg reflector onto the locations of photosensitive medium.

Abstract: A multibeam laser apparatus and an image forming device using the same. The multibeam laser beam apparatus includes a common electrode unit, a plurality of light source units to emit light using the common electrode unit, and an isolating unit to interconnect the common electrode unit and the plurality of light source units. With such configuration for example, the laser apparatus can reduce distances between the respective light source units and the number of the electrodes, and thus reduce the number of wires and legs to produce a compact chip.

Abstract: Disclosed are a print head and an image forming apparatus employing the same. The print head, which irradiates light to multiple locations of a photosensitive medium to form pixels of electrostatic latent image, includes an array of light sources corresponding to the pixels, a distributed Bragg reflector disposed adjacent the surface of the light source array from which the light source array output light, and a light focusing unit which focuses the light that have passed through the distributed Bragg reflector onto the locations of photosensitive medium.

Abstract: Provided are a print head and an image forming apparatus. The print head, which selectively irradiates light to each pixel of an image on a photoconductor, the print head includes an illumination unit, which emits light, a liquid crystal layer, which transmits or intercepts the light incident from the illumination unit on a unit pixel basis according to an applied voltage, and a microlens array formed of liquid crystal polymer, which either focuses or does not focus the light passed through the liquid crystal layer onto the photoconductor.

Abstract: An exposure apparatus adopting an organic light-emitting diode (OLED) array as a light-emitting source is provided. The apparatus illuminates light beams emitted from a printing head disposed along the lengthwise direction of a photosensitive body to form an electrostatic latent image that corresponds to an image. The printing head has the OLED array in which a plurality of light-emitting sources are formed and a beam expander that focuses light beams such that exposure spots that correspond to a plurality of light beams emitted from the plurality of light-emitting sources are focused onto the photosensitive body to not overlap one another.

Abstract: A multibeam laser apparatus and an image forming device using the same. The multibeam laser beam apparatus includes a common electrode unit, a plurality of light source units to emit light using the common electrode unit, and an isolating unit to interconnect the common electrode unit and the plurality of light source units. With such configuration for example, the laser apparatus can reduce distances between the respective light source units and the number of the electrodes, and thus reduce the number of wires and legs to produce a compact chip.

Abstract: A print head is provided using a liquid crystal microlens array and an image forming apparatus is provided to employ the print head. The print head, which forms a latent image by selectively emitting light to respective image points of a photoconductor, includes an illumination unit to emit the light, and a liquid crystal microlens array interposed between the illumination unit and the photoconductor. The liquid crystal microlens array selectively condenses a portion of the light emitted from the illumination unit and directed to image points corresponding to the latent image on the photoconductor.

Abstract: An exposure apparatus adopting an organic light-emitting diode (OLED) array as a light-emitting source is provided. The apparatus illuminates light beams emitted from a printing head disposed along the lengthwise direction of a photosensitive body to form an electrostatic latent image that corresponds to an image. The printing head has the OLED array in which a plurality of light-emitting sources are formed and a beam expander that focuses light beams such that exposure spots that correspond to a plurality of light beams emitted from the plurality of light-emitting sources are focused onto the photosensitive body to not overlap one another.