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 developing cartridge includes a developing portion to supply toner, a toner storing portion to store the toner, a partition wall formed between the developing portion and the toner storing portion and having a toner supply section, and a storing-portion agitating member rotatably disposed in the toner storing portion to intermittently rotate to move the toner in the toner storing portion while the developing portion supplies the toner.

Abstract: A fusing apparatus for an image forming apparatus includes a fusing belt which rotates, a bushing guiding the fusing belt, a ring member rotatably coupled to the bushing and in contact with the fusing belt so as to rotate together with the fusing belt, and a sliding guide member, provided between the ring member and the sidewall of the bushing and at least partially disposed above a central axis of the fusing belt. The sliding guide member slidably supports the ring member and protrudes from the sidewall of the bushing such that a continuous gap is provided from a bottom of the sliding guide member to a bottom of the sidewall of the bushing.

Abstract: Disclosed is a cloud server. The cloud server comprises: a control unit for generating a work group including a plurality of image forming devices which can be controlled by a mobile device; a UI generation unit for generating a UI capable of receiving an input of a virtual grouping job coupled to a plurality of tasks supported by the plurality of image forming devices, respectively; and a communication interface unit for providing a UI which has been generated in the mobile device.

Abstract: A method of controlling transfer power of an image forming apparatus includes: determining a sensing feedback voltage by applying a set sensing current and measuring a first output voltage during a time period before an image is transferred to a transfer medium; measuring humidity and comparing the measured humidity with a set value; setting a target voltage based on the determined sensing feedback voltage when the measured humidity is equal to or higher than the set value; and adjusting the transfer current to apply the target voltage during a time period in which the image is transferred to the transfer medium.

Abstract: A developing cartridge is disposed in an image forming apparatus. The developing cartridge includes a developing portion; a toner storing portion; a partition wall positioned between the developing portion and the toner storing portion and provided with a toner supply section; a first agitating member inside the developing portion; and a second agitating member inside the toner storing portion, wherein at least one of the first agitating member and the second agitating member comprises an elastic member to be in contact with the partition wall.

Abstract: A method of managing an image forming apparatus through a network, the method including: logging in to a server through a diagnostic control unit application from a user terminal; receiving, by the user terminal, device information of an image forming apparatus from the image forming apparatus; requesting for and receiving, by the user terminal, diagnostic control unit information corresponding to the received device information from the server; performing a diagnostic control on the image forming apparatus through the diagnostic control unit application by using the received diagnostic control unit information; and uploading results of performing the diagnostic control on the server.

Abstract: A toner for developing an electrostatic image and a method of manufacturing the same are provided. The toner may have a morphological surface characteristic that induces high thermal and physical characteristics. The toner may simultaneously improve gloss, charge stability, anti-cohesiveness, storage ability, and low temperature fixability.

Abstract: A developing unit includes a developing roller, a developing casing to support and allow the developing roller to rotate, the developing casing including a developer supply inlet, a developer discharge outlet, and a developer collection inlet. The developing unit further includes a discharge cover to form a discharge path for a developer discharged from the developer discharge outlet along with the developing casing. The developer collection inlet is positioned in the discharge path to collect a part of the developer moving along the discharge path into the developing casing.

Abstract: A fusing apparatus and an image forming apparatus includes: a fusing belt; a pressing roller pressed to the fusing belt to form a nib part and rotating the fusing belt; a bushing guiding an edge of the fusing belt; and a ring member rotatably coupled to the bushing and in contact with the edge of the fusing belt that rotates to rotate together with the fusing belt, wherein a first frictional force generated between the edge of the fusing belt and the ring member is larger than a second frictional force generated between the bushing and the ring member.

Abstract: A method and apparatus for printing data with a predetermined format transmitted from a terminal device using Bluetooth communication. The method includes receiving the data having the predetermined format from the terminal device using Bluetooth communication; combining the received data having the predetermined format with template data corresponding to the terminal device stored in a printing apparatus; and printing the combined data. Accordingly, it is possible to obtain the same printing result even when different printing apparatuses print the data by transmitting the data with the predetermined format from the terminal device to the different printing apparatuses using Bluetooth communication, and to obtain the same printing result when printing the data with the predetermined format by transmitting the data with the predetermined format from the terminal device or transmitting data obtained by combining the data with the predetermined format with the template data from the terminal device.

Abstract: Provided is a print medium finishing apparatus including a print medium stacking plate; a stacker tray; and a print medium discharging apparatus configured to discharge, to the stacker tray, print media on the print medium stacking plate, wherein the print medium discharging apparatus includes at least one driving gear that is rotatable; a moving member configured to move linearly and curvilinearly with respect to the at least one driving gear and including a motion converting gear configured to engage the at least one driving gear and convert rotation of the at least one driving gear into a linear motion and a curvilinear motion; and a grip member configured to be moved linearly and curvilinearly by the moving member while holding the print media on the print medium stacking plate, and to place the print media on the stacker tray.

Abstract: Provided are an light scanning device capable of adjusting the position of optics and an image forming apparatus including the light scanning device. The light scanning device includes first and second light sources configured to emit first and second light beams, respectively; optics including first and second lenses for transmitting the first and second light beams therethrough and a lens holder configured to support the second lens; and a housing configured to support the first and second light sources and the optics, wherein the first and second light sources and the first lens are supported to be fixed to the housing, and the second lens is supported to be able to move with respect to the first lens.

Abstract: A fusing device and an image forming apparatus are described in which a pressing member and a heating member of the fusing device are disposed adjacent to one another in a first direction. The heating member includes a fusing belt having a first side in contact with the pressing member, a heat source, disposed at a second side of the fusing belt, to heat the fusing belt, and a heat source seat having a concave structure in which the heat source is mountable.

Abstract: A host apparatus which controls screen capture using a web capture application or a capture application, and a screen capture control method thereof. The host apparatus shares capture areas or saved files using a web capture application through which a screen of a web browser is captured and is compatibly saved or using a capture application through which a desktop screen is captured and is compatibly saved.

Abstract: Provided is a method of generating a workform that defines an order of performing jobs, the method including: setting any one of an image forming apparatus and a mobile device as an input source for receiving a job target; setting a transforming method for transforming a job target received through the input source; setting any one of the image forming apparatus and the mobile device as a transmission destination for transmitting the job target transformed according to the transforming method; and storing a workform defining an order of performing jobs according to the input source, the transforming method, and the transmission destination.

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.