Abstract: A digital web printing press, control apparatus and method for operating the digital web printing press includes selecting a frequency for actuating a digital printing head at the frequency to output printing ink onto a print web, wherein a specified conveying speed for conveying the print web is ascertained based on the selected frequency and printing data, a motor driving a first roller and/or a motor driving a second roller is controlled based on the specified conveying speed such that the print web between the first roller and the second roller is conveyed at the specified conveying speed and the digital printing head at the selected frequency and activated based on the printing data such that the digital printing head is advantageously actuated at a selected, fixed frequency, and such that complex dynamic actuation of the digital printing head and an associated measurement and control system are eliminated.

Abstract: An example fluid handling system for a printer is disclosed. In an implementation, the fluid handling system includes a first compartment, a second compartment, and a fluid port. The first compartment is fluidly coupled to the second compartment through the fluid port and the first compartment, second compartment and fluid port are disposable within a printer. In addition, the fluid handling system includes a barrier disposed within the fluid port. The barrier separates the fluid port into a first channel and a second channel, wherein the barrier is movable within the fluid port.

Abstract: A fluid interconnect system including a mating component having an inlet port and a liquid outlet, the inlet port configured to support an interconnector and the liquid outlet configured to engage with a print cartridge so that liquid flows from a liquid source, through the interconnector and the inlet port, and out of the liquid outlet into the print cartridge.

Abstract: In some examples, an apparatus can include a supply reservoir including print substance, and a rotary valve having a central rotary axis, where the central rotary axis is perpendicular to a height of the supply reservoir, where the rotary valve is in a closed position such that the print substance is unable to be supplied from the supply reservoir.

Abstract: A liquid ejecting head includes a flow path forming substrate in which a pressure generating chamber which communicates with a nozzle which ejects a liquid is formed by a partitioning wall, and a piezoelectric actuator in which a first electrode, a piezoelectric layer, and a second electrode are laminated, in which the piezoelectric layer includes a region which is interposed between the first electrode and the second electrode in a lamination direction, and in which when viewed in plan view from the lamination direction, the region overlaps at least a portion of the edges of each side of an opening of the pressure generating chamber on the piezoelectric actuator side and does not overlap one of the first electrode and the second electrode in at least a portion of the opening.

Abstract: A liquid absorber includes a case, a first liquid absorption member stored in the case, and a second liquid absorption member stored in the case. The case has an opening. The first liquid absorption member absorbs a portion of a liquid. The second liquid absorption member absorbs a portion of the liquid. The second liquid absorption member is disposed adjacent to the first liquid absorption member and is closer to the opening than is the first liquid absorption member. The first liquid absorption member and the second liquid absorption member include fiber substrates and a liquid-absorbent resin, the liquid-absorbent resin being liquid-absorbent resin particles.

Abstract: In some examples, a controller may include a processing resource and a memory resource storing non-transitory machine-readable instructions that are executed to cause the processing resource to direct a clock signal of an imaging device to a fill port via a detection circuit of the imaging device, determine based on a state of a switch included in the detection circuit whether the fill port is open or closed, determine based on the state of the switch indicating the fill port is closed a status of the fill port, and in response to the status of the fill port being closed, determine based on a voltage of the clock signal whether the fill port is connected to a colorant container.

Abstract: A liquid ejection apparatus includes a liquid container for containing liquid which has a refilling port for refilling the liquid container with liquid, a contained liquid information memory unit for storing information on the liquid contained in the liquid container, a refilling liquid information memory unit for storing information on the liquid to be supplied for refilling the liquid container, a liquid ejection head for ejecting the liquid supplied from the liquid container and a control unit for controlling operation of the liquid ejection apparatus according to the information stored in the contained liquid information memory unit and the information stored in the refilling liquid information memory unit.

Abstract: Provided is an inkjet printer with an unwinding portion and an adjacent winding portion in an uneven arrangement, which enables easy replacement of a web-shaped print base material on an unwinding portion and a winding portion for the web-shaped print base material at the time of printing on the web-shaped print base material with an aqueous ink, is capable of dealing with small-lot and wide-variety printing, and enables further space saving as compared to related arts.

Abstract: The printing medium M after color printing is performed on the front surface M1 (recording surface) by the color printing unit 32 can be conveyed while the front surface M1 and the back surface M2 of the printing medium M are inverted twice by the only rollers 471 to 478 (rotary bodies) in contact with the back surface M2 (non-recording surface) of the printing medium M (inverting conveying part 47). In this way, without providing air turn bars, a time to convey the printing medium M from the color printing unit 32 to the white printing unit 33 can be secured while the printing medium M is firmly supported by the rollers 471 to 478 in contact with the back surface M2 of the printing medium M.

Abstract: A liquid discharging apparatus includes a transporting belt having an endless shape stretched over a plurality of rollers and configured to rotate while supporting a medium by a support face being a face on an opposite side from a contact face with the roller, to transport the medium in a transport direction, a liquid discharging unit configured to discharge a liquid onto the medium supported by the support face, and a drying section configured to dry, from a side of the contact face, the liquid adhering to the contact face.

Abstract: An image recording method includes determining whether a surface energy of a base material is less than 50 mN/m or greater than 50 mN/m; deciding a condition for drying a pretreatment liquid containing water and an aggregating agent as a condition A in which the mass ratio of the mass of the pretreatment liquid after being dried to the mass of the pretreatment liquid before being dried is 30% or greater and deciding a condition for drying the pretreatment liquid as a condition B in which the mass ratio thereof is less than 50% in a case where the surface energy is determined to be less than 50 mN/m and 50 mN/m or greater, respectively; applying the pretreatment liquid to the base material; drying the applied pretreatment liquid under the drying condition decided; and applying an ink containing water and a colorant to at least a part of the base material.

Abstract: The plurality of first nozzles and the plurality of second nozzles are arranged such that a distance between nozzles adjacent to each other in a first direction is a first distance, the support body is provided with a first fixing portion for fixing the first head unit onto the support body and a second fixing portion for fixing the second head unit onto the support body, and a distance between the first fixing portion and the second fixing portion in the first direction is a second distance that is different from an integral multiple of the first distance.

Abstract: A liquid container device includes: a liquid container having an inlet; a casing in which the liquid container is housed; and a cap lever having a cap configured to seal the inlet. The liquid container has an upper surface, and a visualization surface. The casing includes a cover configured to pivot and that protects the upper surface, a cap lever-engaging portion, a visualization portion having an opening, and a wall portion disposed on the +Z direction side with respect to the visualization portion. The cap lever includes an engageable portion configured to be engaged with the cap lever-engaging portion, and a body extending in the +Y direction from the engageable portion. A surface disposed so as to face the cover of the body is planar, and an end of the body in the +Y direction is separated from an end of the wall portion in the +Z direction.

Abstract: In an inkjet printer, an ultraviolet irradiator includes a first irradiation portion disposed at the same position as a color ink ejection portion in a front-back direction and a third irradiation portion disposed on the front side of a clear ink ejection portion in the front-back direction, where at the time of printing in a gloss tone printing mode, an average illuminance of a fifth irradiation portion that forms the front side portion of the first irradiation portion is lower than an average illuminance of a fourth irradiation portion that forms the back side portion of the first irradiation portion.

Abstract: An inkjet printer includes a dryer configured to attenuate the effects of temperature differentials arising in substrates that are caused by holes in a media transport belt and a platen covering a vacuum plenum. The dryer includes a heater, a media transport belt cooler, and a media transport belt. The media transport belt is configured to move substrates past the heater after ink images have been formed on the substrates and the media transport belt cooler is positioned to remove heat energy from the media transport belt after the media transport belt has passed the heater and the substrates have separated from the media transport belt. The substrate cooler is configured to reduce a temperature of the media transport belt to a temperature that attenuates image defects arising from temperature differentials in the media transport belt when the media transport belt is opposite the heater.

Abstract: There is provided a liquid ejection apparatus including: a liquid ejection head that includes nozzles; a signal output circuit that outputs a signal that varies depending on whether at least part of the nozzles includes a discharge-defective nozzle; and a controller. The controller is configured to discharge a liquid on a medium by using a partial discharge mode; perform determination, for at least one nozzle included in the nozzles based on the signal from the signal output circuit, about whether the discharge-defective nozzle is included therein; and set, based on the signal from the signal output circuit, the part of the nozzles not to include the discharge-defective nozzle when the liquid is discharged from the liquid ejection head on the medium by using the partial discharge mode and when the controller has determined that the discharge-defective nozzle is included in the nozzles.

Abstract: A head driving device includes a recording head, an input-and-output interface, and circuitry. The recording head includes a plurality of nozzles and a plurality of pressure generating elements corresponding to the plurality of nozzles. The input-and-output interface is configured to acquire correction information generated based on a chart image of a specific pattern for correcting a deviation amount of a landing position of each of the plurality of nozzles. The circuitry is configured to set the correction information acquired by the input-and-output interface and perform correction processing for correcting the deviation amount of the landing position on a driver for each of the plurality of nozzles of the recording head, in accordance with the correction information.

Abstract: A printing unit, includes a head unit including: a thermal head; and a platen unit combined with the head unit. The platen unit including: a platen roller configured to feed a recording sheet while sandwiching the recording sheet together with the thermal head; a platen frame configured to support the platen roller in a rotatable manner; a sensor unit including: a sensor configured to detect the recording sheet; a connector connected to the sensor; and a connection portion configured to connect the sensor and the connector to each other; and a sensor holder, which is mounted to the platen frame, and includes: a plurality of connector arrangement portions through which a terminal of the connector is to be exposed; and a plurality of sensor receiving portions in which the sensor unit is to be received.

Abstract: An apparatus is disclosed. The apparatus is to detect an artefact on a printable surface. The apparatus comprises a detection element to engage the printable surface as the printable surface moves relative to the detection element, and to move away from the printable surface when an artefact passes between the detection element and the printable surface. The apparatus also comprises an actuator to be actuated in response to the detection element moving beyond a defined distance from the printable surface. A method and a print apparatus are also disclosed.