Abstract: According to one embodiment, a fixing device includes a fixing section including a fixing belt laid over a plurality of supporting rollers and an endless rotating section that forms a nip between the rotating section and the fixing belt, the fixing section being configured to nip and carry a recording medium in the nip, and a control section configured to control the fixing section at first fixing speed while a leading end of the recording medium is passing at least a part of the nip and control the fixing section at second fixing speed higher than the first fixing speed after controlling the fixing section at the first fixing speed.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid from an ejection portion; a tank that stores the liquid; a circulation transportation portion that includes a first transportation portion for transporting liquid from the tank to the liquid ejecting head, and a second transportation portion for transporting the liquid from the liquid ejecting head to the tank; an actuator that circulates the liquid of the circulation transportation portion; and a control portion that controls the actuator so as to maintain pressure in the liquid ejecting head to be negative pressure with respect to atmospheric pressure when circulation of the liquid in the circulation transportation portion is started and to start the circulation of the liquid after the pressure in the liquid ejecting head is increased.

Abstract: According to one embodiment, a fixing device includes a fixing section including a fixing belt laid over a plurality of supporting rollers and an endless rotating section that forms a nip between the rotating section and the fixing belt, the fixing section being configured to nip and carry a recording medium in the nip, and a control section configured to control the fixing section at first fixing speed while a leading end of the recording medium is passing at least a part of the nip and control the fixing section at second fixing speed higher than the first fixing speed after controlling the fixing section at the first fixing speed.

Abstract: According to one embodiment, the inkjet head of an application example includes a pressure chamber for charging the ink, an actuator for changing the volume of the pressure chamber, a nozzle for discharging the ink inside the pressure chamber when the volume of the pressure chamber is changed, and a controller that, in the formation of one pixel by discharging ink drops from the nozzle, when the elapsed interval from discharging ink drops last time by the nozzle is less than the specified interval, outputs the discharging waveform corresponding to the ink drop number determined for the formation of the pixel, and when the elapsed interval is more than the specified interval, increases the number of ink drop discharge cycles above the number determined for the formation of the pixel.

Abstract: An ink jet device includes an ink jet head having a nozzle thorough which ink is discharged, an ink chamber communicating with the nozzle, an ink inlet from which the ink is supplied to the ink chamber, and an ink outlet from which the ink is recovered from the ink chamber, and an ink circulating unit having an ink tank that is in close proximity to the ink jet head and is connected to the ink inlet.

Abstract: An inkjet recording device includes an inkjet head that is equipped with a nozzle to discharge ink, an ink flow path connected to this inkjet head, an adjustment unit that adjusts the pressure in the ink flow path, and a maintenance unit that wipes the nozzle of the inkjet head, and a control unit that executes a maintenance mode of the inkjet head by controlling the adjustment unit and the maintenance unit. The control unit controls the maintenance unit to wipe the nozzle after the adjustment unit adjusts the pressure inside the ink flow path to a first positive pressure, and then again, after the adjustment unit adjusts the pressure in the ink flow path to a first negative pressure. The control unit further controls the adjustment unit to adjust the pressure in the flow path to a second negative pressure that is smaller than the first negative pressure.

Abstract: An inkjet recording device includes an inkjet head that is equipped with a nozzle to discharge ink, an ink flow path connected to this inkjet head, an adjustment unit that adjusts the pressure in the ink flow path, and a maintenance unit that wipes the nozzle of the inkjet head, and a control unit that executes a maintenance mode of the inkjet head by controlling the adjustment unit and the maintenance unit. The control unit controls the maintenance unit to wipe the nozzle after the adjustment unit adjusts the pressure inside the ink flow path to a first positive pressure, and then again, after the adjustment unit adjusts the pressure in the ink flow path to a first negative pressure. The control unit further controls the adjustment unit to adjust the pressure in the flow path to a second negative pressure that is smaller than the first negative pressure.

Abstract: According to one embodiment, an inkjet recording apparatus includes a plurality of inkjet heads, a common supply pipe, a common collection pipe and an ink tank device. The common supply pipe includes an upper inner wall from one end side in a longitudinal direction to the other end side, which is inclined with respect to a horizontal direction from the one end side to the other end side if an ink flow direction and opposite direction of a gravitational force are defines as positive axes. The common collection pipe is supplied with the ink from the common supply pipe at one end side in the longitudinal direction. The ink tank device supplies the ink to the one end side of the common supply pipe, and collects the ink from the common collection pipe.

Abstract: According to one embodiment, an ink jet head includes pressure chambers filled with liquid, nozzles discharging the liquid that is in the pressure chambers, actuators changing the capacity of the pressure chambers, and a processor. The processor repeatedly outputs a waveform voltage including an expansion pulse, a ground potential, a contraction pulse, and a ground potential in this order, as a driving voltage with respect to the actuators.

Abstract: There is provided a photoreceptor cleanerless image forming apparatus capable of decreasing color mixture or an exposure error due to reverse transfer toner an untransferred toner. An image forming apparatus 100 according to the present invention comprises four image forming units 100a, 100b, 100c, and 100d configured to be photoreceptor cleanerless in a 4-drum tandem manner. Each image forming unit includes a photoreceptor 103a, 103b, 103c, or 103d, a charger 105a, 105b, 105c, or 105d, an exposure apparatus 106a, 106b, 106c, or 106d, and a developing apparatus 109a, 109b, 109c, or 109d. When exposure intensities Iy, Ic, Im, and Ik are assumed for exposure sources of the exposure apparatuses in the image forming units which form yellow, magenta, cyan, and black images, respectively, the exposure intensities are configured to satisfy conditions of Ik?Ic?Im?Iy and Ik>Iy. This decreases an exposure error (image hysteresis) in an image formed on paper.

Abstract: According to one embodiment an ink jet apparatus includes, an ink jet head, a first tank, a second tank, a third tank, a first flow channel, a second flow channel, and a flow control mechanism. The first tank is disposed upstream of the ink jet head with respect to a flow of ink. The second tank is disposed downstream of the ink jet head with respect to the flow of ink. The third tank is disposed downstream of the ink jet head with respect to the flow of ink. The first flow channel connects the first tank to the ink jet head and connects the ink jet head to the second tank and the third tank. The second flow channel connects the second tank and the third tank with the first tank. The flow control mechanism controls a pressure state of at least one of the second tank and the third tank.

Abstract: An image forming apparatus includes an apparatus main body, a transport mechanism that is provided in the apparatus main body and transports a sheet, a recording head to record an image by discharging ink to the sheet transported by the transport mechanism, a sheet guide that is provided to be opposite to the recording head and guides the sheet, a transport roller provided at an upstream side of the sheet guide in a sheet transport direction, an ejection roller provided at a downstream side thereof, and a transport unit that integrates the medium guide, the transport roller and the ejection roller and is provided to freely come in and out of the apparatus main body.

Abstract: An image forming apparatus includes a carriage mounted with a recording head of an ink-jet system, a carriage driving mechanism, and a sheet conveying mechanism that conveys a sheet in a predetermined direction. The carriage is moved in a direction orthogonal to the conveying direction of the sheet by the carriage driving mechanism. A sheet guide member is arranged in a position below the recording head and opposed to the recording head. A sheet passes over a guide section of this sheet guide member. A heater is provided in the sheet guide member. This heater heats the guide section.

Abstract: According to one embodiment, an inkjet image forming apparatus includes a transport section configured to adsorb a recording medium by suction to transport the recording medium under inkjet heads, and a controller configured to perform control in a manner that an adsorption force to the recording medium if the image is formed on a second surface of the recording medium is larger than an adsorption force to the recording medium if the image is formed on a first surface of the recording medium.

Abstract: According to one embodiment, an ink jet head includes pressure chambers filled with liquid, nozzles discharging the liquid that is in the pressure chambers, actuators changing the capacity of the pressure chambers, and a processor. The processor repeatedly outputs a waveform voltage including an expansion pulse, a ground potential, a contraction pulse, and a ground potential in this order, as a driving voltage with respect to the actuators.

Abstract: The inkjet recording device has the feed mechanism for feeding the paper sheet in the feed direction, the inkjet head for ejecting the droplets towards the paper sheet conveyed by the feed mechanism, the dry section for drying the droplets attached on the paper sheet by landing, and the control mechanism for predicting the amount of heat necessary for drying the droplets based on either one of the paper sheet information of the paper sheet and the recording information to be recorded on the paper sheet to control the temperature of the dry section.

Abstract: An image forming apparatus includes a carriage on which a recording head is mounted, a carriage drive mechanism including a motor to reciprocate the carriage, a sheet transport mechanism to transport the sheet in a direction orthogonal to a movement direction of the carriage, a sheet guide member arranged below the recording head and having a guide unit which is opposite to the recording head and on which the sheet passes, a paper loading unit arranged below the recording head and containing the stacked sheet before printing, a first transport path to transport the sheet from the paper loading unit to between the recording head and the sheet guide member while inverting the sheet, a second transport path to transport the sheet from the paper loading unit to a temporal containing unit in a state where a front-back direction of the sheet is kept, and a third transport path to transport the sheet from the temporal containing unit to between the recording head and the sheet guide member in a state where the front

Abstract: An image forming apparatus includes a sheet stacking unit that stacks and stores the sheet before printing, a first conveying path that conveys the sheet from this sheet stacking unit, a second conveying path that conveys the sheet from this first conveying path to a space between the recording head and a sheet guide member while reversing the sheet, a third conveying path that conveys the sheet from the first conveying path to a temporary storing unit in a state in which a front-to-rear direction of the sheet is maintained, a fourth conveying path that conveys the sheet from the temporary storing unit to the space in a state in which the front-to-rear direction of the sheet is maintained, a first switching mechanism that switches a conveying direction of the sheet, and a second switching mechanism that guides the sheet.

Abstract: An image forming apparatus for printing on a sheet by a recording head, includes a sheet transport mechanism to transport the sheet in a specified direction; a paper loading unit to contain the stacked sheet before printing; a second transport mechanism to transport the sheet through a second transport path from the paper loading unit to a temporal containing unit a state where a front-back direction of the sheet is kept; and a third transport mechanism to transport the sheet through a third transport path from the temporal containing unit between the recording head and the sheet guide member in a state where the front-back direction of the sheet is kept.

Abstract: An image forming apparatus includes an image forming unit and a supporting mechanism that supports this image forming unit. A feed tray for placing sheets thereon is provided in a rear part of the image forming unit. The supporting mechanism includes a base member and a turntable. The turntable can move along a guide section to a first position on a rear side and a second position on a front side with respect to the base member. The supporting mechanism includes a rotation stopping mechanism that prevents the turntable from rotating when the turntable is in the first position and a rotating mechanism that rotates the turntable in a horizontal plane in a state in which the turntable has moved to the second position.