Abstract: According to an embodiment of the present disclosure, a cordless hair straightener includes a body which includes a battery including an input and an output and charged by an external power supply through the input, a first heater unit and a second heater unit which are electrically connected to the output of the battery, a first housing which accommodates at least a part of the body and at least a part of the first heater unit therein and moves the first heater unit between a closed position and an open position, and a second housing which accommodates at least a part of the body and at least a part of the second heater unit therein and moves the second heater unit between a closed position and an open position.

Abstract: The present disclosure relates to a printer for pulling out a paper wound in the form of a wound roll, and more particularly, to a printer which includes a cartridge configured to accommodate the paper, a housing in which the cartridge is mounted, and a printing part configured to pull out the paper. The cartridge or the housing has a decurling part formed thereon, and the decurling part comes into surface-contact with the paper on the upper side of the paper in the process of pulling out the paper.

Abstract: A printer for pulling out a paper wound in a form of a wound roll is disclosed. The printer may comprise a cartridge configured to accommodate the paper, a housing in which the cartridge is mounted, a cover moveable between an open position for opening the top surface of the housing and a closed position for closing the top surface of the housing, a first printing unit mounted to the housing, and a second printing unit mounted to the cover. The paper is pulled out between the first printing unit and the second printing unit, and the second printing unit has a decurling part formed thereon. The decurling part comes into surface-contact with the paper on the upper side of the paper in the process of pulling out the paper when the cover is in the closed position.

Abstract: The present disclosure relates to a printer for pulling out a paper wound in the form of a wound roll, and more particularly, to a printer which includes a cartridge configured to accommodate the paper, a housing in which the cartridge is mounted, and a printing part configured to pull out the paper. The cartridge or the housing has a decurling part formed thereon, and the decurling part comes into surface-contact with the paper on the upper side of the paper in the process of pulling out the paper.

Abstract: The present invention relates to a hydraulic percussion device and a construction apparatus having the same, the hydraulic percussion device comprising: a cylinder; a piston; a backward port connecting a front chamber of the cylinder to a hydraulic source; a forward port formed on a rear chamber of the cylinder; a forward/backward valve for controlling the forward and backward movement of the piston; a control line for moving the forward/backward valve to a forward-movement location; a long-stroke port formed between the forward port and the backward port; a short-stroke port formed between the backward port on the cylinder and the long-stroke port; a shift valve disposed between the short-stroke port and the control line; a proximity sensor for detecting a bottom dead point of the piston upon the stroke on an object; and a controller for determining a striking condition on the basis of the detected bottom dead point, and transmitting a control signal to the shift valve.

Abstract: A printer for pulling out a paper wound in a form of a wound roll is disclosed. The printer may comprise a cartridge configured to accommodate the paper, a housing in which the cartridge is mounted, a cover moveable between an open position for opening the top surface of the housing and a closed position for closing the top surface of the housing, a first printing unit mounted to the housing, and a second printing unit mounted to the cover. The paper is pulled out between the first printing unit and the second printing unit, and the second printing unit has a decurling part formed thereon. The decurling part comes into surface-contact with the paper on the upper side of the paper in the process of pulling out the paper when the cover is in the closed position.

Abstract: The present disclosure relates to a printer for repositionable note, including: a housing including an accommodation unit configured to accommodate a repositionable note wound in the form of a roll with at least one adhesive portion exposed and an ejection outlet through which the note withdrawn from the accommodation unit is ejected, and forming a movement path for the note from the accommodation unit to the ejection outlet; a print unit including a thermal head provided on the movement path and configured to print on the note ejected through the ejection outlet and a feed roller configured to rotate in a direction opposite to a rotation direction of the note when the note accommodated in the housing is withdrawn and provided to face the thermal head and thus to enable printing on the note while transferring the note.

Abstract: Provided is a printer system for printing a repositionable note. The system includes a printer that prints a repositionable note and a cartridge that accommodates the repositionable note and is coupled to the printer. The cartridge includes an indication unit that indicates color information previously defined for the repositionable note accommodated in the cartridge, and the printer includes a sensing unit matched with the indication unit included in the cartridge to sense color information of the repositionable note indicated by the indication unit and recognizes a color of the repositionable note accommodated in the printer and changes a Bluetooth search name according to the color of the repositionable note. The system further includes a user client that can be linked to the printer via Bluetooth and is connected to a predetermined printer by using the Bluetooth search name.

Abstract: An image forming device comprises: an exposer having a plurality of light emitting devices, a light emitting device among the plurality of light emitting devices to transmit light toward a photosensitive drum; and a developer to develop an electrostatic latent image formed on a surface of the photosensitive drum by the light, wherein the light emitting device among the plurality of light emitting devices includes: a light emitting layer to generate the light; and a reflective layer to reflect at least a portion of the generated light. The reflective layer can include a plurality of sub-reflective layers, in which a thickness of a sub-reflective layer among the plurality of sub-reflective layers is different from a thickness of another sub-reflective layer among the plurality of sub-reflective layers, and/or a refractive index of a sub-reflective layer among the plurality of sub-reflective layers is different from a refractive index of another sub-reflective layer among the plurality of sub-reflective layers.

Abstract: A two-step auto stroke hydraulic breaker includes a cylinder including a high-low pressure chamber, a high pressure chamber, and a pressure converting chamber including a pilot port, a high pressure connecting port connected to the high pressure chamber, a sensing port, an oil tank port, a long stroke port, and a short stroke port, a piston including small diameter portions, upper and lower large diameter portions, a sensing fluid groove between the upper and lower large diameter portions, and a return fluid groove formed on the lower the large diameter portion, a fluid circuit unit to control a supply direction of the fluid to the cylinder and to generate a fluid pressure to selectively change a stroke, and a chisel to break the bedrock when a lower portion of the piston descends to impact the chisel during a descending operation.

Abstract: Provided is a printer system for printing a repositionable note. The system includes a printer that prints a repositionable note and a cartridge that accommodates the repositionable note and is coupled to the printer. The cartridge includes an indication unit that indicates color information previously defined for the repositionable note accommodated in the cartridge, and the printer includes a sensing unit matched with the indication unit included in the cartridge to sense color information of the repositionable note indicated by the indication unit and recognizes a color of the repositionable note accommodated in the printer and changes a Bluetooth search name according to the color of the repositionable note. The system further includes a user client that can be linked to the printer via Bluetooth and is connected to a predetermined printer by using the Bluetooth search name.

Abstract: The present invention relates to a hydraulic percussion device and a construction apparatus having the same, the hydraulic percussion device comprising: a cylinder; a piston; a backward port connecting a front chamber of the cylinder to a hydraulic source; a forward port formed on a rear chamber of the cylinder; a forward/backward valve for controlling the forward and backward movement of the piston; a control line for moving the forward/backward valve to a forward-movement location; a long-stroke port formed between the forward port and the backward port; a short-stroke port formed between the backward port on the cylinder and the long-stroke port; a shift valve disposed between the short-stroke port and the control line; a proximity sensor for detecting a bottom dead point of the piston upon the stroke on an object; and a controller for determining a striking condition on the basis of the detected bottom dead point, and transmitting a control signal to the shift valve.

Abstract: An image forming device comprises: an exposer having a plurality of light emitting devices, a light emitting device among the plurality of light emitting devices to transmit light toward a photosensitive drum; and a developer to develop an electrostatic latent image formed on a surface of the photosensitive drum by the light, wherein the light emitting device among the plurality of light emitting devices includes: a light emitting layer to generate the light; and a reflective layer to reflect at least a portion of the generated light. The reflective layer can include a plurality of sub-reflective layers, in which a thickness of a sub-reflective layer among the plurality of sub-reflective layers is different from a thickness of another sub-reflective layer among the plurality of sub-reflective layers, and/or a refractive index of a sub-reflective layer among the plurality of sub-reflective layers is different from a refractive index of another sub-reflective layer among the plurality of sub-reflective layers.

Abstract: A display apparatus includes: a display for displaying an image; a detector for detecting an exposure speed of a portable image-forming device which exposes an instant film to light using light from a screen displayed on the display; and an image processor for adjusting brightness of the image displayed on the display depending on the detected exposure speed.

Abstract: A portable image-forming device includes a housing, an exposure member for exposing an instant film disposed inside of the housing by means of a light radiating from the screen of a portable display device, a shading member linked in movement with the exposure member so as to shade the instant film, a traction member connected to the exposure member so as to move the exposure member to a pre-exposure position, and a developing-agent-spreading member for spreading a developing agent, which is provided on the instant film, over the entire instant film. The traction member and the developing-agent-spreading member are manually operated by a user.

Abstract: A two-step auto stroke hydraulic breaker includes a cylinder including a high-low pressure chamber, a high pressure chamber, and a pressure converting chamber including a pilot port, a high pressure connecting port connected to the high pressure chamber, a sensing port, an oil tank port, a long stroke port, and a short stroke port, a piston including small diameter portions, upper and lower large diameter portions, a sensing fluid groove between the upper and lower large diameter portions, and a return fluid groove formed on the lower the large diameter portion, a fluid circuit unit to control a supply direction of the fluid to the cylinder and to generate a fluid pressure to selectively change a stroke, and a chisel to break the bedrock when a lower portion of the piston descends to impact the chisel during a descending operation.

Abstract: The present disclosure relates to a printer for repositionable note, including: a housing including an accommodation unit configured to accommodate a repositionable note wound in the form of a roll with at least one adhesive portion exposed and an ejection outlet through which the note withdrawn from the accommodation unit is ejected, and forming a movement path for the note from the accommodation unit to the ejection outlet; a print unit including a thermal head provided on the movement path and configured to print on the note ejected through the ejection outlet and a feed roller configured to rotate in a direction opposite to a rotation direction of the note when the note accommodated in the housing is withdrawn and provided to face the thermal head and thus to enable printing on the note while transferring the note.

Abstract: A portable image-forming device includes a housing, an exposure member for exposing an instant film disposed inside of the housing by means of a light radiating from the screen of a portable display device, a shading member linked in movement with the exposure member so as to shade the instant film, a traction member connected to the exposure member so as to move the exposure member to a pre-exposure position, and a developing-agent-spreading member for spreading a developing agent, which is provided on the instant film, over the entire instant film. The traction member and the developing-agent-spreading member are manually operated by a user.

Abstract: A display apparatus includes: a display for displaying an image; a detector for detecting an exposure speed of a portable image-forming device which exposes an instant film to light using light from a screen displayed on the display; and an image processor for adjusting brightness of the image displayed on the display depending on the detected exposure speed.

Abstract: An inkjet printhead and a method of manufacturing the same. The inkjet printhead may include a substrate in which a manifold to supply ink is formed in a lower portion of the substrate and a plurality of ink feed holes connected to the manifold are formed in an upper portion of the substrate, feed hole guides that are formed on inner sidewalls of the ink feed holes to define lengths of the ink feed holes, a chamber layer stacked on the substrate, the chamber layer including a plurality of ink chambers connected to the ink feed holes, a plurality of heaters to heat ink inside the ink chambers to generate bubbles, and a nozzle layer stacked on the chamber layer, the nozzle layer including a plurality of nozzles, the ink being ejectable through the nozzles.