A method for manufacturing an organic EL display panel, including: forming first electrodes over a substrate; defining, above the substrate, pixel formation regions lining up in a row direction and a column direction, by forming banks over the substrate; applying ink to each pixel formation region by causing a plurality of nozzles lining up in a straight line to discharge the ink to the pixel formation regions while displacing the nozzles relative to the substrate in a scanning direction; drying the ink to form functional layers in the pixel formation regions; and forming a second electrode at a position covering the pixel formation regions. In the application of ink, an angle between the scanning direction and the row direction is set to more than 0 and less than 90 and each nozzle applies the ink across a plurality of rows of the pixel formation regions.

An assembly (1) of at least one object (5) having an outer surface (12) substantially of revolution around an axis of revolution () and a machine (10) for printing the object, the machine including: at least four printing stations (16, 18, 20, 22) including at least two inkjet printheads, each printhead defining a median plane, the median planes intercepting the outer surface along two impact axes, respectively, seen from an opening angle from the axis of revolution; a conveying system (35) including at least one object carrier (40) and suitable for moving the object carrier relative to the printing stations sequentially in at least four printing positions, the object carrier being suitable for rotating the object around the axis of revolution; and a controller. In each of the printing positions: the two printheads are offset relative to one another along the axis of revolution; the control system is configured so that said two printheads print the object during at least one printing period; and the median planes form an angle strictly smaller than the opening angle between them.

A liquid application apparatus includes a liquid discharge head and processing circuitry. The liquid discharge head discharges liquid. The processing circuitry causes the liquid application apparatus to sequentially move to each of a plurality of divided areas obtained by dividing a liquid application area in which the liquid discharge head performs liquid application. The processing circuitry causes the liquid discharge head to move to each of the divided areas to perform liquid application. After the liquid discharge head performs first liquid application to one divided area of the divided areas, the processing circuitry causes the liquid application apparatus to move to another one divided area adjacent to or partially overlapping the one divided area and causes the liquid discharge head to perform second liquid application to said another one divided area to connect an image generated by the first liquid application and an image generated by the second liquid application.

In the head unit 15, an opening 14a for exposing the nozzle surface of an inkjet head 3 and an opening 14b for exposing the nozzle surface of an inkjet head 4 are formed in a base member 14, and the width of the opening 14a in the sub scanning direction is set to a width at which the inkjet head 3 can be arranged at a first position 3A where the inkjet head 3 and the inkjet head 4 are arranged at the same position in the sub scanning direction and a second position where the inkjet head 3 and the inkjet head 4 are arranged at positions shifted in the sub scanning direction.

In a digital to garment printer having a rotary printing motion one or more T-shirt carriers are arranged on a fixed radius and rotate around a central column which houses one or more rotary tables. Each carrier is independent of the others but shares the same radius of rotation about the central column. All T-shirt carriers may share the same plane of rotation or be offset vertically and move to the printing plane with the up-down motion of the central column. On the same radius there are a series of fixed stations for printing as well as pretreatment, drying, and post treatment. The printing motion is achieved through the rotation of the T-shirt carrier that swipes under the print heads. The stepping motion can be achieved through the radial motion of the T-shirt carrier or the movement of the print head carrier.

An inkjet head alignment apparatus that are capable of automatically and easily aligning heads without manual work includes: a drive device configured to align heads for ejecting a substrate treating liquid; and a connection module configured to constrain the heads to the drive device, wherein the drive device is configured to form movement in at least two directions among a first direction, a second direction orthogonal to the first direction on a horizontal plane, and a third direction perpendicular to the first direction in an upward direction, and the connection module comprises: guide pins provided on the heads and protruding in the third direction; and bush units provided on the drive device and configured to constrain movement in a circumferential direction, including the first and second directions, by receiving the guide pins therein.

A method for printing on a tilted print medium using a first printing strategy or a second printing strategy. The first printing strategy includes: acquiring a tilted direction and a tilted angle of the titled print medium; acquiring a print start point; starting print from the start point and continuously translating the printhead toward the tilted opposite side in a direction perpendicular to the moving direction of the tilted print medium, and during the translation, controlling the inkjet hole to delay ink-jetting in the direction parallel to the moving direction of the tilted print medium. The second printing strategy includes: determining a tilted angle of the print medium and a position of a print standard point after tilted, adjusting the print content to be mirror symmetrical with the print medium, and controlling the printhead to print according to the print content when the print standard point reaches the printhead.

A liquid discharge apparatus to discharge liquid to apply the liquid to an object includes a head, a mover, a rotator, and processing circuitry. The head has a nozzle surface in which a plurality of nozzle rows each including a plurality of nozzles to discharge the liquid are arranged. The mover relatively moves the head and the object in each of a first direction and a second direction orthogonal to each other along the nozzle surface. The rotator rotates the head along the nozzle surface. The processing circuitry controls the relative movement to correct unevenness of a nozzle interval between the plurality of nozzles along the second direction caused by an inclination between the first direction and a third direction when the head is rotated. The third direction is a direction in which the plurality of nozzles are arranged in each of the plurality of nozzle rows.

A recording-head position adjustment mechanism includes a supporting member supporting a recording head that discharges a liquid droplet, the recording head including an abutting portion. The recording-head position adjustment mechanism includes a positioner on which the abutting portion abuts, the positioner to which the abutting portion is fixed so as to determine a position of the recording head in a longitudinal direction of the recording head with respect to the supporting member. A position of the positioner in the longitudinal direction with respect to the supporting member is adjustable.

A method determines the positional deviations of nozzles in a printhead array using only a single test pattern and performs steps of: printing a test pattern, whereby preferably neighboring nozzles jet non-simultaneously; sensing the test pattern to determine an array of detected droplet positions; determining an array of nominal nozzle positions based on the detected droplet positions and their respective jetting times; determining a common rotation deviation parameter corresponding to a rotation of the printhead array with respect to a scanning direction based on the detected droplet positions; transforming the array of nominal nozzle positions to compensate for the common rotation deviation parameter; and determining positional deviations of nozzles in the printhead array by comparing the transformed array of nominal nozzle positions to a reference.