Abstract: The present specification relates to a polymer comprising a unit represented by Chemical Formula 2, and an end group represented by Chemical Formula 5, and an organic light emitting device using the same: wherein all the variables are described herein.

Abstract: The present invention relates to a composition for preventing hair loss or promoting hair growth containing a milk thistle flower extract as an active ingredient. More specifically, the present invention relates to a cosmetic composition, pharmaceutical composition and food composition containing a milk thistle flower extract as an active ingredient, which are able to promote hair growth by inducing the proliferation of dermal papilla cells reduced due to senescence, and activate dermal papilla cells by inhibiting the senescence of dermal papilla cells through inhibition of the activity of senescence-associated ?-galactosidase (SA-?-Gal) and the production of senescence-associated secretory phenotypes, thereby preventing hair loss or promoting hair.

Abstract: A print medium feeding device comprises a pickup roller, a forward roller, a registration roller, a sensing unit, and a processor. The processor adjusts a first driving signal and a second driving signal based on a difference between a first time and a second time and controls driving of the registration roller using adjusted signals, the first driving signal adjusting a waiting position of the print medium in the registration roller, the second driving signal feeding the print medium waiting at the adjusted waiting position to the image forming unit, the first time associated with transport of the print medium from the pickup roller to the sensing unit, and the second time being measured by sensing the print medium transported from the pickup roller to the sensing unit.

Abstract: An image forming apparatus is provided. The image forming apparatus according to an embodiment includes a paper-feeding device configured to accommodate paper, a print engine configured to form an image on paper supplied from the paper-feeding device, and a discharging device configured to discharge paper on which an image is formed by the print engine, wherein the paper-feeding device comprises a pick-up roller in a cylindrical shape configured to pick up paper loaded in a tray, a driving shaft configured to support the pick-up roller to idly rotate, and rotate in a predetermined direction, a solenoid configured to selectively rotate the driving shaft; and a power transmission member configured to selectively provide a driving force of the driving shaft to the pick-up roller, the power transmission member being coupled to or spaced apart from the pick-roller, wherein the power transmission member is engaged with the pick-up roller within a predetermined rotational range of the driving shaft.

Abstract: An image forming apparatus comprises a housing, a cassette insertable into the housing to store printing sheets; an automatic mounting apparatus provided between the housing and the cassette and to allow the cassette to be mounted thereon, where the automatic mounting apparatus comprises an engaging portion configured to protrude on a side surface of the cassette, a rail portion provided in the housing, and a locking device provided at the rear side of the rail portion to interfere with the engaging portion.

Abstract: An image forming apparatus comprises a housing, a cassette insertable into the housing to store printing sheets; an automatic mounting apparatus provided between the housing and the cassette and to allow the cassette to be mounted thereon, where the automatic mounting apparatus comprises an engaging portion configured to protrude on a side surface of the cassette, a rail portion provided in the housing, and a locking device provided at the rear side of the rail portion to interfere with the engaging portion.

Abstract: A paper feeding apparatus of an image forming apparatus is provided. The paper feeding apparatus includes a pickup unit configured to rotate about a first axis, a swing member configured to rotate about a second axis, and to move the pickup unit from a contact location to a separation location by pressing the pickup unit, an elastic member configured to provide an elastic force to the swing member, and a rotation limiter configured to limit a rotation angle at which the swing member rotates, wherein a momentum of the swing member is less than a momentum of the pickup unit, while the swing member presses the pickup unit and rotates.

Abstract: A misfuelling prevention device for preventing inappropriate fuel from being added to a vehicle utilizes a diameter difference between a gasoline gun and a diesel gun in order to prevent misfuelling. The misfuelling preventing device is constructed such that when the diesel gun having a relatively larger diameter is inserted, a locking button is not pressed while a flapper is opened, whereas when the gasoline gun having a relatively smaller diameter is inserted, the locking button is pressed while the flapper is not opened. As a result, misfuelling of the vehicle with inappropriate fuel is fundamentally prevented.

Abstract: A hybrid vehicle may include a battery and a fuel tank, wherein the battery is mounted in a space defined under a body floor, on which a double seat is disposed, and the fuel tank is disposed over an upper end portion of a rear-wheel suspension and a rear of a body cross member.

Abstract: A misfuelling prevention device for preventing inappropriate fuel from being added to a vehicle utilizes a diameter difference between a gasoline gun and a diesel gun in order to prevent misfuelling. The misfuelling preventing device is constructed such that when the diesel gun having a relatively larger diameter is inserted, a locking button is not pressed while a flapper is opened, whereas when the gasoline gun having a relatively smaller diameter is inserted, the locking button is pressed while the flapper is not opened. As a result, misfuelling of the vehicle with inappropriate fuel is fundamentally prevented.

Abstract: A paper feeding apparatus of an image forming apparatus is provided. The paper feeding apparatus includes a pickup unit configured to rotate about a first axis, a swing member configured to rotate about a second axis, and to move the pickup unit from a contact location to a separation location by pressing the pickup unit, an elastic member configured to provide an elastic force to the swing member, and a rotation limiter configured to limit a rotation angle at which the swing member rotates, wherein a momentum of the swing member is less than a momentum of the pickup unit, while the swing member presses the pickup unit and rotates.

Abstract: A printing medium supplying apparatus may include a body, a feed tray configured to rotate between a first position in which the feed tray forms an external appearance of the body and a second position in which a printing medium is loaded, a knock-up plate provided on the feed tray configured to ascend and descend, a pickup roller configured to make contact with the loaded printing medium as the knock-up plate ascends, and a rotating lever configured to allow the knock-up plate to be restricted at a side of the feed tray when the feed tray rotates from the first position to the second position. Accordingly, the knock-up plate are restricted and released together with operations of the pickup roller and the feed tray.

Abstract: A printing medium feeder and image forming apparatus are provided. The printing medium feeder includes a pickup unit configured to pick up printing medium, and a support arranged on a lower side of the pickup unit to selectively support the pickup unit or release supporting of the pickup unit, wherein as the support releases the supporting of the pickup unit, the other end portion of the pickup unit descends by self-weight on the basis of one end portion thereof to be seated on the printing medium.

Abstract: A printing medium supplying apparatus may include a body, a feed tray configured to rotate between a first position in which the feed tray forms an external appearance of the body and a second position in which a printing medium is loaded, a knock-up plate provided on the feed tray configured to ascend and descend, a pickup roller configured to make contact with the loaded printing medium as the knock-up plate ascends, and a rotating lever configured to allow the knock-up plate to be restricted at a side of the feed tray when the feed tray rotates from the first position to the second position. Accordingly, the knock-up plate are restricted and released together with operations of the pickup roller and the feed tray.

Abstract: A printing media loading apparatus includes a first printing media loading unit detachably disposed in an image forming apparatus; a second printing media loading unit disposed above the first printing media loading unit; a first lever assembly rotatably disposed in the first printing media loading unit; a second lever assembly disposed in the second printing media loading unit to selectively rotate the first lever assembly; and a detecting sensor disposed in the image forming apparatus to detect action of the first lever assembly, wherein, when at least one printing medium is loaded on the second printing media loading unit and there is no printing medium loaded on the first printing media loading unit, the second lever assembly is rotated and the first lever assembly is rotated by rotation of the second lever assembly to activate the detecting sensor.

Abstract: A printing media loading apparatus includes a first printing media loading unit detachably disposed in an image forming apparatus; a second printing media loading unit disposed above the first printing media loading unit; a first lever assembly rotatably disposed in the first printing media loading unit; a second lever assembly disposed in the second printing media loading unit to selectively rotate the first lever assembly; and a detecting sensor disposed in the image forming apparatus to detect action of the first lever assembly, wherein, when at least one printing medium is loaded on the second printing media loading unit and there is no printing medium loaded on the first printing media loading unit, the second lever assembly is rotated and the first lever assembly is rotated by rotation of the second lever assembly to activate the detecting sensor.

Abstract: Disclosed are an image forming apparatus capable of correcting a color registration error and a method for correcting the color registration error. The image forming apparatus can include an image receptor, a light scanning unit having a plurality of light sources and one or more beam deflectors, a developing unit, a transfer unit, and a color registration error correction unit configured to generate data about a color registration error based on a change in a light output value of the plurality of light source and to correct the color registration error between visible images formed on the image receptor.

Abstract: Disclosed are an image forming apparatus of improved power transmission structure and a developing cartridge thereof. The image forming apparatus may include a main body; a driving unit which includes a driving shaft mounted to the main body and a driving coupler connected to the driving shaft. The driving coupler may be provided with a plurality of driving tips. The image forming apparatus may further include a consumable unit that may be detachably received in the main body. The consumable unit may include a driven shaft, a rotating body rotating with the driven shaft and a passive coupler rotating with the driven shaft. The passive coupler may be provided with a plurality of passive tips. The plurality of driving tips and the plurality of passive tips may come into engaging contact with each other when the consumable unit is operably received in the main body, and may remain in the engaging contact even when the respective rotational axes of the driving shaft and the driven shaft intersect with each other.

Abstract: Disclosed are an image forming apparatus of improved power transmission structure and a developing cartridge thereof. The image forming apparatus may include a main body; a driving unit which includes a driving shaft mounted to the main body and a driving coupler connected to the driving shaft. The driving coupler may be provided with a plurality of driving tips. The image forming apparatus may further include a consumable unit that may be detachably received in the main body. The consumable unit may include a driven shaft, a rotating body rotating with the driven shaft and a passive coupler rotating with the driven shaft. The passive coupler may be provided with a plurality of passive tips. The plurality of driving tips and the plurality of passive tips may come into engaging contact with each other when the consumable unit is operably received in the main body, and may remain in the engaging contact even when the respective rotational axes of the driving shaft and the driven shaft intersect with each other.

Abstract: A developer supplying apparatus includes a developer lump prevention unit that reduces the aggregation of developer into lumps in the path, which defines the supply passage of developer from the developer cartridge, in which the developer is stored, to the developing cartridge, which houses the developing roller. The developer lump prevention unit includes a developer lump removal member disposed in the path and a driving mechanism to drive the developer lump removal member to move in the path to prevent the developer lumps from forming and/or to break up lumps that had already formed in the path.