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 image forming apparatus includes an upstream side chamber arranged further on an upstream side with respect to an ink flowing direction than a head in a circulating path and configured to temporarily store the ejection liquid that should be supplied to the head through the circulating path, a downstream side chamber arranged further on a downstream side than the head and further on the upstream side than the upstream side chamber in the circulating path and configured to temporarily store the ejection liquid collected from the head, and a pressure-difference adjusting mechanism configured to form a first pressure state in which the pressure in the downstream side chamber is lower than the pressure in the upstream side chamber and the head and a second pressure state in which the pressure in the upstream side chamber is lower than the pressure in the downstream side chamber.
Abstract:
An ink jet recording apparatus includes a color processing unit that converts print data to color data, a reaction liquid ejecting unit that has plural nozzles arranged and ejects a reaction liquid onto a recording medium, an ink ejecting unit that has plural nozzles arranged and ejects an ink onto the recording medium based on the color data, a subscanning driving unit that conveys the recording medium having an image formed by the ink ejecting unit, and a controlling unit that controls to a constant value a ratio of an amount of droplets of the reaction liquid ejected by the reaction liquid ejecting unit and a total amount of ink droplets of the ink ejected by the ink ejecting unit, with respect to each of pixels of the image formed on the recording medium.
Abstract:
An ink jet recording apparatus includes an ink jet head on which a plurality of nozzles are arranged, a sub-scan driving unit which carries a recording medium on which an image is formed, a first carrying unit which is disposed on a downstream side of a carrying direction of the recording medium by the sub-scan driving unit and carries the recording medium on which an image is formed by the ink jet head, a second carrying unit which is disposed on a downstream side of the first carrying unit along a carrying direction of the recording medium, and a heating unit which is disposed between the first carrying unit and the second carrying unit.
Abstract:
An ink jet recording apparatus including an ink jet head in which a plurality of nozzles are arranged, a sub-scan driving unit which carries a recording medium to be formed with an image, a suction unit which sucks the recording medium on the sub-scan driving unit, and a heating unit which is disposed with respect to at least one place of the sub-scan driving unit in a direction perpendicular to a carrying direction of the recording medium with a gap therebetween.
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 conveying path that continues to a paper feeding unit and a paper discharge unit, a conveying mechanism that conveys a sheet along the conveying path, plural liquid ejecting heads that eject liquid onto the sheet conveyed on the conveying path, a sensor that is provided in a position between the plural liquid ejecting heads and the paper discharge unit and measures the glossiness of the sheet on which the liquid is ejected, and a control mechanism that compares the glossiness of the sheet immediately after the liquid is ejected and the glossiness measured by the sensor to calculate drying time of the liquid and controls conveying speed of the conveying mechanism to equalize conveying time for the sheet from the plural liquid ejecting heads to the paper discharge unit with the drying time.
Abstract:
The image forming apparatus includes: plural heads arrayed in a direction orthogonal to a conveying direction of a recording medium and configured to eject ejection liquids onto the conveyed recording medium from plural nozzle holes formed on nozzle surfaces; a cap unit configured to simultaneously cap the nozzle surfaces of all the plural heads; a suction unit configured to simultaneously suck all the nozzle holes on the nozzle surfaces of one head among the plural heads; and a contact and separation mechanism configured to relatively move the cap unit and suction unit and the nozzle surfaces of the heads to be capable of coming into contact with and separating from each other.