An ink-jet recording apparatus includes a recording head, an irregularity detecting unit, a recording medium conveyance unit, and a control unit. The irregularity detecting unit detects an irregularity with the recording medium conveyed toward the recording head. The recording medium conveyance unit has a recording medium diversion unit into which the recording medium with which an irregularity has been detected by the irregularity detecting unit is conveyed. The control unit can perform flushing operation and, when the irregularity detecting unit detects an irregularity with the recording medium, the control unit cancels the flushing operation set immediately before the recording medium with which the irregularity has been detected and conveys, by controlling the recording medium conveyance unit, the recording medium to the recording medium diversion unit.

A method including: a conveying step of conveying a continuous sheet to be a component of a disposable worn article in a longitudinal direction; a printing step of repeatedly printing a predetermined pattern by spraying ink from a first group of nozzles of an inkjet print head onto a surface of the continuous sheet; and a flushing step of performing a flushing operation of spraying ink from at least a second group of nozzles of the head onto the surface of the continuous sheet.

A liquid ejecting apparatus includes a transport belt that transports a medium in a transport direction in a state in which the medium is supported on a medium supporting surface, a liquid ejecting head that ejects a liquid from a plurality of nozzles formed on a nozzle surface with respect to the medium supported on the medium supporting surface of the transport belt, and a controller that performs a flushing operation of ejecting the liquid from the nozzles as a maintenance operation for the liquid ejecting head, on a flushing area on the medium supporting surface adjacent to the medium with an interval therebetween.

A method of multi-color printing in a single pass using a fixed pagewide array of monochrome inkjet printheads. The printheads are aligned with each other in a media feed direction and the method includes the steps of: feeding print media along the media feed direction past a first printhead positioned furthest upstream in the array, a third printhead downstream of the first printhead and a second printhead positioned furthest downstream in the array; printing a yellow ink onto the print media using the first printhead; printing a black ink onto the print media using the third printhead; and printing a cyan or magenta ink onto the print media using the second printhead.

A liquid discharge apparatus includes a liquid discharge head, a dummy discharge controller, and a storage device. The liquid discharge head includes a plurality of nozzles to discharge liquid onto a continuous medium. The dummy discharge controller is configured to control the liquid discharge head to discharge dummy discharge droplets linearly in an inter-page area of the continuous medium. The storage device is configured to retain a plurality of dummy discharge patterns that differs from each other in number of droplets continuously discharged in at least one direction of a feed direction of the continuous medium and a direction perpendicular to the feed direction.

A controller controls printing heads to print a page information mark with black ink to perform line flushing. The printing heads each have a plurality of inkjet nozzles for discharging ink being disposed in parallel in a width direction of web paper. Upon printing the mark, when an overlap region is present in which a mark printable region overlaps a line flushing region with ink other than the black ink, the controller performs control to decrease an ink discharge amount per unit area in the overlap region in the mark printable region to be smaller than that in the mark printable region except for the overlap region and the line flushing region. This causes a decreased total ink discharge amount in the overlap region.

An inkjet printhead including an inkjet configured to eject drops of ink in response to receiving an electrical signal, a memory configured to store image data, and a processor operatively coupled to the inkjet and the memory. The processor receives the image data and determines a period of latency of the inkjet printhead. When the period of latency is within a predetermined timeframe, the processor increases a voltage of the electrical signal to a second voltage for an initial number of drops to eject the drops of ink in a pattern of printed ink drops with reference to at least a portion of the image data and reduce the voltage of the electrical signal after the initial number of drops to eject drops of ink in a pattern of printed ink drops with reference to a remaining portion of the image data, and generates the electrical signal.

An inkjet printhead including an inkjet configured to eject drops of ink in response to receiving an electrical signal, a memory configured to store image data, and a processor operatively coupled to the inkjet and the memory. The processor receives the image data and determines a period of latency of the inkjet printhead. When the period of latency is within a predetermined timeframe, the processor increases a voltage of the electrical signal to a second voltage for an initial number of drops to eject the drops of ink in a pattern of printed ink drops with reference to at least a portion of the image data and reduce the voltage of the electrical signal after the initial number of drops to eject drops of ink in a pattern of printed ink drops with reference to a remaining portion of the image data, and generates the electrical signal.

An ink-jet printing device according to the present invention includes at least one nozzle configured to discharge an ink droplet onto a recording medium conveyed in a conveyance direction, and a control unit to control flushing operation of the nozzle. Candidate regions are disposed at a plurality of places separated from each other in a conveyance direction of a cut sheet. The control unit controls the nozzle to perform the flushing operation in the candidate regions at a plurality of places in the conveyance direction of the cut sheet. With this configuration, the ink jet printing device can efficiently perform the flushing operation on a recording medium with reduced restriction on imposition.

An ejection instructing device includes an instructing unit, a generator, and a data generating controller. The instructing unit provides an instruction to cause a nozzle of a printer to eject droplets in accordance with ejection data for preventing a situation where the nozzle does not eject droplets caused by clogging. The generator generates ejection data for preventing a situation where the nozzle does not eject droplets caused by clogging and supplies the ejection data to the instructing unit. The data generating controller controls the generating of ejection data by the generator so that ejection data to be received by the instructing unit will satisfy an ejecting condition for preventing clogging of the nozzle.