Abstract: The present invention relates to an apparatus for cooling an LCD panel of a 3D printer that transmits the light irradiated from a light source module to the LCD panel and cures a photocurable resin in a water tank to produce a sculpture, the apparatus comprising: a sealed case arranged between the light source module and the LCD panel; and a cooling module installed on one side or lower surface of the sealed case and cooling the air inside the sealed case to cool the LCD panel.

Abstract: An infill apparatus and method for an output of a 3D printer, including a unit block generating part which slices a 3D model by using three planes orthogonal to each other to generate unit blocks; a unit block classifying part which classifies the unit blocks into boundary unit blocks and internal unit blocks according to positions thereof and classifies the boundary unit blocks into flat roof unit blocks and non-flat roof unit blocks according to whether or not a flat roof region is included; a combined block generating part which merges the internal unit blocks and generates a combined block; a flat roof point discriminating part which discriminates flat roof points in the combined block; a combined block dividing part which divides a part of the combined block including the flat roof points; and an infill shape determining part which determines a divided surface (or contact surface) of the combined block divided by the combined block dividing part as infill shape and outputs a printing material to the infi

Abstract: Provided is an apparatus for feeding/discharging a filament for a 3D printer, including a filament supply part which winds the wire-shaped filament and supplies the wound filament; a filament output part which outputs a three-dimensional printed matter by melting and discharging the filament supplied from the filament supply part; and a driving part which supplies the filament from the filament supply part to the filament output part, and discharges the filament from the filament output part toward the filament supply part, wherein the driving part includes a driving motor which is provided at the filament output part to generate a driving force and thus to adapt the filament to be conveyed in a normal direction or a reverse direction; a driving roller which is provided at the filament output part to receive the driving force of the driving motor and to convey the filament in the normal direction or the reverse direction; a conveying roller which is provided at the filament supply part to receive the driving

Abstract: The present disclosure relates an image correction apparatus and method. The image correction apparatus includes a printing unit for printing an image; a scratch detecting unit which detects a scratch region from a scan image scanned per line; and a restoration processing unit which performs the restoration of the scratch region by interpolation if the width of the scratch region detected by the scratch detecting unit is less than a predetermined value and, if the width thereof is not less than the predetermined value, does not perform a restoration of the scratch region but provides the printing unit with the scan image, thereby correcting an image distortion by easily detecting an image distortion due to foreign matter.

Abstract: Provided is a toner recycling device for an image forming apparatus, including a waste toner conveying screw which conveys waste toner collected out of a surface of a photosensitive drum to one side; a toner recycling means which is connected with the waste toner conveying screw to be rotated by rotation of waste toner conveying screw, filters a foreign substance out of the waste toner conveyed by the waste toner conveying screw, supplies the recycled toner from which the foreign substance is removed toward a developing unit, and discharges the foreign substance filtered out of the waste toner to an outside of a drum unit; and a collecting case which is integrally formed with the drum unit at one side of the drum unit to collect the foreign substance filtered by the toner recycling means, wherein the foreign substance like paper dust contained in the waste toner is filtered, and then the recycled toner is supplied again toward the developing unit, thus it is possible to prevent the quality of a printed image

Abstract: Disclosed is a developer discharging device for an image forming apparatus, which is installed in a developing unit configured to transfer and discharge a developer collected from a drum unit or a newly introduced developer, such that the developer is discharged to a developer collecting unit, including a first discharging part configured to extend from an end of a transferring screw installed in the developing unit, and a second discharging part disposed above the first discharging part in parallel with the first discharging part, wherein the developer discharged from the second discharging part falls into the developer collecting unit. Therefore, it is possible to prevent the developer from being sharply discharged, and thus to constantly maintain an amount of the developer.

Abstract: A cartridge assembly for an image forming apparatus, including a drum unit provided with a waste toner conveyor which conveys waste toner collected from a surface of a photosensitive drum to one side; a developing unit connected with the drum unit, configured to receive the waste toner collected from the drum unit, and having a developer discharger to discharge a developer therein to an outside; and a developer collecting unit integrally formed with the drum unit at one side of the drum unit, and configured to collect the developer discharged by the developer discharger of the developing unit, wherein the drum unit includes a toner injector which connects the waste toner conveyor, a new toner supply unit and the developing unit so that the waste toner conveyed by the waste toner conveyor and new toner supplied from the new toner supply unit are injected together into the developing unit.

Abstract: Disclosed is a paper clamping apparatus for an office machine adapted to clamp a paper bundle outputted from the office machine while the paper bundle is being moved. A movable body adapted to move along a shaft by means of belt driving is included; a shaft holder connected to an end of the shaft at an end of the movable body and adapted to move along the shaft by means of a movement of the movable body; a base connected to the shaft at the other end of the movable body and adapted to move along the shaft by means of a movement of the movable body; and a clamp member adapted to operate so that, when the movable body moves, the paper bundle is clamped or released by means of link driving.

Abstract: An A4-size scanner capable of scanning an A3 document. The A4-size scanner includes a scanning part, a transferring roller member that is disposed at an upper side of the flat glass to be orthogonal to a length direction of the automatic document feeding unit and the scanning sensor so that the document having a double size of a scanning capacity of the scanning sensor and introduced onto the flat glass in the length direction of the automatic document feeding unit and the scanning sensor is transferred to a transferring roller, and a transferring roller member driving motor that is connected with the transferring roller which dividedly scans the document having a larger size than the scanning capacity of the scanning sensor; and an image processing part which performs an image processing for composing two images which are dividedly scanned through the scanning part.

Abstract: An image forming apparatus is capable of scanning a document having a larger size than the flat. For example, it is possible to scan an A3 document using a scanning sensor having a slight larger size than an A4 document, and also it is possible to obtain a high quality of the A3 document image.

Abstract: An image forming apparatus is capable of scanning a document having a larger size than the flat. For example, it is possible to scan an A3 document using a scanning sensor having a slight larger size than an A4 document, and also it is possible to obtain a high quality of the A3 document image.

Abstract: An A4-size scanner capable of scanning an A3 document. The A4-size scanner includes a scanning part, a transferring roller member that is disposed at an upper side of the flat glass to be orthogonal to a length direction of the automatic document feeding unit and the scanning sensor so that the document having a double size of a scanning capacity of the scanning sensor and introduced onto the flat glass in the length direction of the automatic document feeding unit and the scanning sensor is transferred to a transferring roller, and a transferring roller member driving motor that is connected with the transferring roller which dividedly scans the document having a larger size than the scanning capacity of the scanning sensor; and an image processing part which performs an image processing for composing two images which are dividedly scanned through the scanning part.

Abstract: A copper based alloy for use as a material for electrical and electronic parts has a chemical composition by weight, of 0.5 to 3% Ni, 0.1 to 0.9% Sn, 0.08 to 0.8% Si, 0.1 to 3 Zn, 0.007 to 0.25% Fe, 0.001 to 0.2% P, 0.001 to 0.2% Mg, 0.0001 to 0.001% C, and if required, further containing 0.001 to 0.3% at least one element of Cr and Zr, and the balance being Cu and inevitable impurities. The obtained copper alloy is excellent in electric conductivity, solder-exfoliation resistance when bent, high-temperature creep strength, and migration resistance, while being superior in hot workability and blankability to the conventional copper based alloy.