Patent application number | Description | Published |
20080219723 | APPARATUS AND METHOD OF HEATING IMAGE ON RECORDABLE MATERIAL - An image heating apparatus includes a pressure roller, a belting film to circulate while partially connecting with the pressure roller, a support member to be provided in the belting film and comprises a guide to guide the circulating of the belting film, a nip spring to comprise a nip portion to form a nip between the belting film and the pressure roller, and a support portion to support the nip portion against the support member, and a heater to be provided adjacent to the nip spring and transfer heat to the image through the belting film. | 09-11-2008 |
20080232871 | FIXING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fixing device includes a pressing roller, a fixing belt to receive a rotation force transferred from the pressing roller and to rotate thereby, a nip forming member which is mounted inside the fixing belt, the nip forming member including a heat transmission unit formed thereon, and a heat source, which is mounted inside the nip forming member, to simultaneously apply heat to the nip forming member and to the fixing belt through the heat transmission unit. | 09-25-2008 |
20080240806 | FIXING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - A fixing unit which enables high-speed operation and miniaturization, and an image forming apparatus having the fixing unit, includes a heating member which is heated by a heat source, the heating member having a predetermined width; a rotating member to rotate in contact with the heating member; a driving member to rotate the rotating member; and a pressing member to press both sides of the heating member towards the driving member and to form a predetermined fixing nip between the rotating member and the driving member, wherein the heating member has a second moment of inertia which is set to maintain a fixing efficiency of 90% or more in a central portion of the heating member. | 10-02-2008 |
20080240807 | BELT MEANDER PREVENTING DEVICE, FIXING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fixing device includes a fixing roller, a fixing belt which is made to rotate by a rotation force transferred from the fixing roller, a heat source which is mounted inside the fixing belt, a guide member, which is mounted inside the fixing belt, to guide the rotation of the fixing belt, and a belt meander preventing unit, which is mounted on the guide member, to elastically support both sides of the fixing belt and to prevent the fixing belt from meandering. Therefore, the sides of the fixing belt are elastically supported to gently absorb a reaction force acting on the end portion of the fixing belt, and accordingly it is possible to prevent the fixing belt from being damaged and meandering. | 10-02-2008 |
20080247789 | FIXING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fixing device includes a fixing roller, a fixing belt which is made to rotate by a rotation force received from the fixing roller, a nip forming unit to form a nip zone at a contact area between the fixing roller and the fixing belt, and a first heating unit, which is separated from the nip zone, to apply heat to the fixing belt. The nip zone and the heating unit are separated, so that the heating unit can be prevented from being broken as a result of the pressurization and thermal deformation. | 10-09-2008 |
20080304882 | FUSING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fusing device includes a pressing member, a belt member to rotate in contact with the pressing member, a nip forming member to support the belt member so that nip areas are formed on the pressing member and the belt member at contacting portions thereto, a heating member disposed away from the nip areas, to heat the belt member, and a tension application member to stiffen the belt member so that the heating member is tightly contacted with the belt member. The heating member includes a plate type heating element which is arranged at an upstream side of the nip areas, and to contact an inner circumference of the belt member, in an advancing direction of the fusing belt. The effective width of then nip areas increases, and the increased pressure is exerted to the nip areas, because the fusing belt enters a location where the nip areas are formed in a heated state. Furthermore, heating efficiency of the fusing belt is increased, because the fusing belt is heated while in a tight contact with the heating member. As a result, fusing performance is enhanced. | 12-11-2008 |
20080317527 | FUSING APPARATUS AND ELECTROPHOTOGRAPHIC IMAGE-FORMING APPARATUS HAVING THE SAME - A fusing apparatus includes a heating unit to generate heat to fuse an image onto a printing medium, a pressurizing roller that faces and contacts the heating unit having an endless fusing film that is rotated while facing and contacting the pressurizing roller and presses the printing medium toward the heating unit, a nip forming member including a main body formed inside the fusing film to surround a heat source and contacts a portion of the fusing film to the pressurizing roller to form a nip, a plurality of opening forming portions connected to the main body and form an opening portion such that heat generated from the heat source directly arrives at the fusing film via the opening portion, and a plurality of adhering portions connected to the opening forming portions, are separated from each other, having the opening portion therebetween, and contact the fusing film, and a supporting member to support the nip forming member. | 12-25-2008 |
20080317528 | FUSING DEVICE, IMAGE FORMING APPARATUS HAVING THE FUSING DEVICE, AND FUSING METHOD OF THE IMAGE FORMING APPARATUS - A fusing device includes a preheating unit to preheat a developed image on a recording medium, and a heating unit to fuse the preheated developed image onto the recording medium by heating the image without pressing. The preheating unit includes a preheating plate heated by the heating unit and having an airtight interior space, and a phase transition fluid filled in the interior space. The heat generated by the heating unit is stored in the preheating plate using the phase transition fluid, and the temperature of the preheating plate uniform is kept uniform using a non-condensable gas filled in the airtight space of the preheating plate to condense and expand depending on a pressure of the phase transition fluid, and a heat sink arranged corresponding to a charge section of the non-condensable gas to absorb the heat of the preheating plate when the non-condensable gas is contracted. | 12-25-2008 |
20090110451 | FUSING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fusing device includes a pressure unit, a belt unit to rotate in outer contact with the pressure unit, a nip forming unit to form a nip over a contact portion between the pressure unit and the belt unit, a heating unit to heat the nip forming unit and the belt unit, and a support unit to press and support the nip forming unit constantly and having a plurality of heat transmission portions defined in a parallelogrammic shape of an oblique direction with respect to a traveling direction of the belt unit. | 04-30-2009 |
20120055181 | Cooling system and defrosting control method thereof - A cooling system including an evaporator to exchange heat with air, a frost detector installed on the evaporator to detect frost, and a control unit to determine whether a current time corresponds to a frost detection point, to control the frost detector to operate when the current time corresponds to the frost detection point, and to control a defrosting operation based on a frost detection signal from the frost detector. It is possible to accurately detect the amount of frost formed on the evaporator by executing the frost detection under constant frost detection environmental conditions. | 03-08-2012 |
20120255873 | APPARATUS AND METHOD FOR PRODUCING ELECTROLYTIC REDUCING WATER - An apparatus for producing electrolytic reducing water with excellent reducing ability and a pH that is maintained neutral by combining advantages of a conventional water purifier and a conventional alkaline ionized water device. | 10-11-2012 |
20130092558 | APPARATUS FOR PRODUCING ELECTROLYTIC REDUCED WATER AND CONTROL METHOD THEREOF - An apparatus for producing electrolytic reduced water, the apparatus including a water purifying unit configured to generate purified water by filtering water, an electrolytic reduced water generating unit comprising a first electrode and a second electrode, which have different polarities, configured to receive the purified water through a first pipe connected to the water purifying unit and configured to generate reduced water containing dissolved hydrogen gas by performing electrolysis on the purified water through the first electrode and the second electrode. a control unit configured to determine a point of time for switching polarities of the first electrode and the second electrode based on the detected water quality and to control an operation of the power supply unit such that the polarities of the first electrode and the second electrode are switched if it is determined that the point of time is reached. | 04-18-2013 |