Abstract: A light-emitting component includes: plural light-emitting thyristors, each including a semiconductor layer stack laminating first to fourth semiconductor layers in order, and emitting light at a predetermined wavelength in an ON state; plural transfer thyristors, each including the semiconductor layer stack, the plural transfer thyristors shifting to the ON state for transferring the ON state to set corresponding light-emitting thyristors in a light-enabled state; and plural coupling transistors, each including the first to third semiconductor layers in the semiconductor layer stack and provided to couple former and latter transfer thyristors, the first and second semiconductor layers of each coupling transistor being continued to the first and second semiconductor layers of the former transfer thyristor, and the third semiconductor layer of each coupling transistor being continued to the third semiconductor layer of the former transfer thyristor with a thickness to be depleted in a state where no voltage is

Abstract: A page-width array printing device includes a page-width array printing mechanism including at least one page-width array printing module. The page-width array printing module includes a printing platform, a first page-width array printing unit and a second page-width array printing unit. The first page-width array printing unit includes a plurality of first inkjet cartridges. The second page-width array printing unit includes a plurality of second inkjet cartridges. The first page-width array printing unit and the second page-width array printing unit are in parallel with each other. The first inkjet cartridges and the second inkjet cartridges are staggered and independently and detachably disposed on the printing platform. Each of the first inkjet cartridges and the second inkjet cartridges includes an inkjet chip. The inkjet chip includes four ink supply channels and a plurality of nozzles so as to perform a monochromatic or polychromatic page-width array printing operation.

Abstract: A controller determines a correspondence relationship among nozzles in a plurality of nozzle arrays in each head unit so that a positional relationship among nozzles corresponding to the same pixel in each nozzle array becomes the same in all of the head units irrespective of a positional relationship between nozzles having the same number in order from one side in a main scanning direction in two nozzle arrays in each head unit.

Abstract: A light-emitting component includes: plural transfer thyristors each configured with a semiconductor layer stack laminating first to fourth semiconductor layers, and shifting to an ON state in order; plural coupling transistors each configured with the first to third semiconductor layers, provided to couple adjacent transfer thyristors, the first and the second semiconductor layers of the coupling transistor being continued to the first and the second semiconductor layers of the former transfer thyristor; plural first resistances, each provided between the third semiconductor layer of each transfer thyristor and a wiring for power supply; a second resistance having a resistance value smaller than a product of a resistance value of the first resistance and a ratio of a collector current of the coupling transistor to a cathode current of the transfer thyristor in the ON state; and plural light-emitting thyristors each configured with the semiconductor layer stack.

Abstract: A drying device of this disclosure is a drying device that dries ink discharged onto a surface of a recording medium and includes a drying conveyor portion and a blower portion. The drying conveyor portion conveys the recording medium. The blower portion blows air toward the recording medium substantially parallel to an ink recording surface of the recording medium being conveyed by the drying conveyor portion.

Abstract: The invention provides a process for producing a protective-layer-provided substrate in which a protective layer is formed on a substrate on the surface of which a plurality of structures have been arranged at intervals. The protective layer has a resin layer and a film for chucking. The process includes the steps of forming the resin layer between the respective structures, on the surfaces of the respective structures and on the surface of the substrate having the plurality of the structures; and forming the film for chucking on the resin layer to form the protective layer.

Abstract: An image forming apparatus is provided with a conveyance belt, image forming portion, belt moving mechanism, optical sensor, current generation portion, position detection portion, belt movement control unit, reference value storage portion, base current measurement portion, initial value storage portion, and correction value determination portion. The current value measurement portion monitors the decrease in the value of a light receiving signal while decreasing an electric current generated in the current generation portion, and, in the case where the value of the light receiving signal reaches a reference value stored in the reference value storage portion, measures the value of a base current that is generated by the current generation portion. The correction value determination portion determines a correction value of a light emitting current, so that the value of the light emitting current increases depending on the amount by which the base current increases relative to an initial value.

Abstract: An ink-jet printer which records an image by discharging an ink onto a recording medium includes: an ink-jet head having nozzles for discharging ink droplets; a carriage which makes the ink-jet head to scan in a main scanning direction; a transport mechanism which transports the recording medium in a transporting direction intersecting the main scanning direction; and a discharge controller configured to control the ink-jet head to discharge the ink droplets from the nozzles. The discharge controller is configured to change a discharge timing of the ink droplets from reference timing to deviate the landing positions of the ink droplets in a case that at least one of the alignment direction of the nozzles and the transport direction is inclined with respect to a sub scanning direction perpendicular to the main scanning direction.

Abstract: A droplet ejection device comprising a flow passage, a nozzle orifice formed in a wall of the flow passage, a circulation system for circulating a liquid through the flow passage, and an actuator system for generating a pressure wave in the liquid in the flow passage, wherein an obstruction member is arranged in the flow passage in a position opposite to the nozzle orifice and projecting towards the nozzle orifice.

Abstract: There is provided an ink cartridge including a body, a particular interface and an engagement portion. The body has a front side at which an ink supply portion is located for supplying ink stored in an ink chamber to an exterior of the ink chamber, and a rear side located to face the front side. The particular interface is positioned substantially adjacent to the ink supply portion at the front side, wherein the particular interface is configured to be biased by a biasing member in a specific direction. The engagement portion is configured to be engaged with a locking section of a cartridge installation portion for retaining the body in an installed state.

Abstract: An inkjet printing apparatus includes a purge unit having a sheet member that purges ink deposited on an orifice face of a print head and a winding unit that winds the sheet member. By using the number of ink ejections executed between a first purge operation and a second purge operation, the amount of winding of the sheet member is controlled after the second purge operation is completed.

Abstract: The object is to provide an inkjet head unit having: head chips having nozzles arranged on nozzle faces, and capable of discharging ink by respective independent pressure generating module from pressure chambers communicating with the nozzles; and a tabular head unit base on which the head chips are arranged and which is capable of holding the head chips, of abutting faces of the head unit base and the head chip, at least one of the abutting face on the head unit base side and the abutting face on the head chip side is formed in a stepped shape, so that the height of the abutting face of the head chip relative to the surface of the head unit base is partially changed, and the head chip is thereby attached to be inclined relative to the surface of the head unit base.

Abstract: Inkjet head cleaning and storage includes cleaning an orifice plate by inserting a tip of a shaped wiper into a slit of a printing mask, such that one or more shoulders of a handling end of the shaped wiper are in contact with respectively one or more edges of the slit. The shoulders of the shaped wiper facilitate the tip applying a predetermined pressure to an orifice surface during wiping. Preventing sediment buildup during extended periods of non-printing includes placing at least the orifice plate of the printing head in a protecting liquid that avoids evaporation of the volatile liquid from the nozzles. An innovative “night plate” can be used to seal the slit of a printing mask and ink purged from the printing head used to fill a gap between the printing head and the mask, thereby covering at least the orifice plate with the purged ink.

Abstract: An inkjet printing apparatus for printing on a substrate comprises a first support, which is a substrate support, and a second support which supports at least one inkjet printing head, at least one UV source of ultraviolet radiation, and at least one gas dispenser. The second support is moveable relative to a substrate supported by the first support. The printing head deposits ink on the substrate and the UV source cures the deposited ink. The gas dispenser is arranged to provide a layer of gas, which is at least depleted of oxygen, between the UV source and the substrate.

Abstract: A liquid ejection device has a feeding mechanism, a nozzle, an irradiating section, and a color meter. The feeding mechanism is configured and arranged to feed a medium in a feed direction. The nozzle is configured and arranged to eject a liquid to be cured by irradiation of light toward the medium. The irradiating section is configured and arranged to radiate the light toward the liquid landed on the medium. The color meter is disposed on a downstream side of the feed direction with respect to the irradiating section so as to perform color measurement of an image generated on the medium, the color meter being configured and arranged such that calibration of the color meter is performed by reading a reference. The irradiating section is configured and arranged to radiate the light when the calibration of the color meter is performed.

Abstract: A liquid ejecting apparatus may have a head with a plurality of head units. Each head unit may include a driver IC. An ejection timing signal (FIRE) may be transmitted from a control device to each of the driver ICs through an ejection timing signal line, which may be connected to the control device as a single line and split on its way to the driver ICs. The control device may further output delay information indicating a delay amount for the FIRE signal to the driver ICs through a control signal line through which a waveform pattern selection signal (SIN) is also transmitted. Each of the driver ICs may include a delay circuit that delays the FIRE signal by the delay amount indicated by the delay information.

Abstract: A sheet cutting device includes a cutter including opposed blades to cut a sheet fed along a sheet feed path to the device, a cutter holder holding the cutter and reciprocally movable in a width direction of the sheet perpendicular to a sheet feed direction in which the sheet is fed, and a guide member including a first path to guide the holder in the width direction of the sheet to cut the sheet with the cutter and a second path to guide the holder in the width direction after the sheet is cut. The second path is disposed away from the first path in a thickness direction of the sheet perpendicular to both the sheet feed direction and the width direction of the sheet. When the holder moves along the second path, the holder is retracted away from the sheet feed path in the thickness direction of the sheet.

Abstract: An image forming apparatus and printing methods include a media support member to support media and an ink applicator unit to selectively apply ink to the media disposed on the media support member in a print mode. The image forming apparatus and printing methods also include a heating unit to preheat at least one of the media support member and the media to a predetermined temperature in a preheat mode prior to the selective application of the ink to the media.

Abstract: An inkjet printing apparatus and an inkjet printing method are realized which can improve a print quality while minimizing the volume of waste ink, running cost and throughput degradations. For this purpose, the scan width is set according to the size and position of the print medium and then, based on that scan width, a location where the preliminary ejections are to be executed and the number of times that the preliminary ejection is to be executed in a single preliminary ejection session are determined.

Abstract: An ink jet textile printing apparatus includes a textile printing head having a nozzle line for discharging a coating solution containing an abrasion resistance-improving resin in a content of A and a textile printing head having a nozzle line for discharging an ink containing the abrasion resistance-improving resin in a content of B, wherein the content A and the content B satisfy a relationship of A>B.