Abstract: An image forming apparatus includes a scanner and a printing apparatus, wherein the scanner includes a scanning window; a transport unit configured to transport a document to a top surface of the scanning window; a scan unit configured to obliquely irradiate light to a bottom surface of the scanning window to scan the document; a transport guide member configured to be disposed to face the top surface of the scanning window to guide a transport of the document; and a curved reflection member configured to be coupled to the transport guide member to collect the light irradiated from the scan unit and to reflect the collected light toward the scanning window.

Abstract: An image forming apparatus includes a scanner and a printing apparatus, wherein the scanner includes a scanning window; a transport unit configured to transport a document to a top surface of the scanning window; a scan unit configured to obliquely irradiate light to a bottom surface of the scanning window to scan the document; a transport guide member configured to be disposed to face the top surface of the scanning window to guide a transport of the document; and a curved reflection member configured to be coupled to the transport guide member to collect the light irradiated from the scan unit and to reflect the collected light toward the scanning window.

Abstract: A system and a method for measuring flight parameters of a spherical object are disclosed. A trigger signal-generating unit generates and outputs a first trigger signal upon detection of a spherical object, and generates and outputs a second trigger signal when a reference time interval which is set on the basis of the maximum flight speed and the maximum rotating speed of the spherical object has elapsed from the point in time when the first trigger signal was generated. A photographing unit photographs images in a first image acquiring region having a predetermined region in which the spherical object exists, in accordance with the first trigger signal and the second trigger signal.

Abstract: A system and a method for measuring flight parameters of a spherical object are disclosed. A trigger signal-generating unit generates and outputs a first trigger signal upon detection of a spherical object, and generates and outputs a second trigger signal when a reference time interval which is set on the basis of the maximum flight speed and the maximum rotating speed of the spherical object has elapsed from the point in time when the first trigger signal was generated. A photographing unit photographs images in a first image acquiring region having a predetermined region in which the spherical object exists, in accordance with the first trigger signal and the second trigger signal.

Abstract: Disclosed therein is a reverse osmosis water purifier having a simple filter configuration, which includes filter parts consisted of a sediment-filter, a chlorine-resistant polyamide composite membrane and a post-carbon-filter. The reverse osmosis water purifier can be designed in slim size by omitting a pre-carbon-filter, and provide drinking water of good quality since a portion of the residual chlorine in the feed water pass through the chlorine-resistant polyamide composite membrane to the downstream of said membrane and the residual chlorine can inhibit an adventitious growth of microorganism in the post-carbon-filter or the purified-water tank.