Abstract: Provided are: a compound for an organic optoelectronic diode; a composition for an organic optoelectronic diode including the same; an organic optoelectronic diode including the composition for the organic optoelectronic diode as a host; and a display device including the organic optoelectronic diode.

Abstract: The present invention relates to a composition for an organic optoelectronic device, the composition comprising: a first host compound represented by Chemical Formula 1 below; and a second host compound represented by Chemical Formula 2 below, to an organic optoelectronic device using the composition and a display device. The details of Chemical Formulas 1 and 2 above are as defined in the specification.

Abstract: Disclosed are a compound for an organic optoelectronic device represented by Chemical Formula 1, and an organic optoelectronic device and a display device including the same. Details of Chemical Formula 1 are as defined in the specification.

Abstract: Disclosed are a compound for an organic optoelectronic device represented by Chemical Formula 1, a composition for an organic optoelectronic device including the same, an organic optoelectronic device, and a display device. Details for Chemical Formula 1 are the same as described in the specification.

Abstract: An example print medium loading device includes a loading unit on which a print medium is loadable, a transporting roller unit to transport a print medium toward the loading unit, and a moving gate between the loading unit and the transporting roller unit. The loading gate moves according to locations to which the print medium is transported. In an example, when a first print medium is loaded on the loading unit and the transporting roller unit transports a second print medium toward the loading unit, the moving gate is positioned at the first location to overlap a trailing end of the first print medium toward the moving gate. When the leading end of the second print medium is past the moving gate and the second print medium is loaded on the loading unit, the moving gate sequentially moves through the first through fourth positions.

Abstract: A stapling apparatus includes a stapler, a driver to move the stapler, and a guide part to define a moving path along which the stapler is to move in response to selection of the moving path among a plurality of moving paths along which the stapler is movable.

Abstract: An example print medium loading device includes a loading unit on which a print medium is loadable, a transporting roller unit to transport a print medium toward the loading unit, and a moving gate between the loading unit and the transporting roller unit. The loading gate moves according to locations to which the print medium is transported. In an example, when a first print medium is loaded on the loading unit and the transporting roller unit transports a second print medium toward the loading unit, the moving gate is positioned at the first location to overlap a trailing end of the first print medium toward the moving gate. When the leading end of the second print medium is past the moving gate and the second print medium is loaded on the loading unit, the moving gate sequentially moves through the first through fourth positions.

Abstract: A stapling apparatus includes a stapler, a driver to move the stapler, and a guide part to define a moving path along which the stapler is to move in response to selection of the moving path among a plurality of moving paths along which the stapler is movable.

Abstract: A stapling apparatus capable of performing stapling on various positions by varying a moving path of a stapler is provided. The stapling apparatus includes a stapler, a driver configured to be coupled to the stapler and move the stapler, and a guide part configured to selectively switch a moving path of the stapler.

Abstract: A stapling apparatus capable of performing stapling on various positions by varying a moving path of a stapler is provided. The stapling apparatus includes a stapler, a driver configured to be coupled to the stapler and move the stapler, and a guide part configured to selectively switch a moving path of the stapler.

Abstract: A method of controlling performance of auto color registration (ACR) of a color image forming apparatus, and an image forming apparatus using the same are provided. The method of controlling performance of ACR includes forming a composite black image on a transfer belt, sensing the composite black image by using a sensor, measuring the sensed composite black image, and performing ACR correction when a measured width of the composite black image is greater than a previously set value. Accordingly, it is possible to prevent unnecessary performance of ACR control when no color misregistration has occurred. In this way, ACR control is performed in as short a time as possible so that performance of the image forming apparatus may be improved. Also, it is possible to prevent waste of ACR performance time and life span reduction of a driving source for ACR.

Abstract: An image forming apparatus includes an image forming unit to perform printing using a light source unit and a photosensitive medium, a registration unit to adjust an exposure time to correspond to a change in a power of a light source when the power of the light source changes, and a controller to control the image forming unit to perform printing according to the adjusted exposure time.

Abstract: A method of controlling performance of auto color registration (ACR) of a color image forming apparatus, and an image forming apparatus using the same are provided. The method of controlling performance of ACR includes forming a composite black image on a transfer belt, sensing the composite black image by using a sensor, measuring the sensed composite black image, and performing ACR correction when a measured width of the composite black image is greater than a previously set value. Accordingly, it is possible to prevent unnecessary performance of ACR control when no color misregistration has occurred. In this way, ACR control is performed in as short a time as possible so that performance of the image forming apparatus may be improved. Also, it is possible to prevent waste of ACR performance time and life span reduction of a driving source for ACR.

Abstract: An image forming apparatus includes an image forming unit to perform printing using a light source unit and a photosensitive medium, a registration unit to adjust an exposure time to correspond to a change in a power of a light source when the power of the light source changes, and a controller to control the image forming unit to perform printing according to the adjusted exposure time.