A fluid ejection module mounting apparatus, including a module mount having a horizontal portion and a vertical portion, a fluid ejection module mounted to the module mount, and a clamp assembly including a recessed portion, a clamp along a wall of the recessed portion, and a lever coupled to the clamp and configured to move the clamp from an open position to a closed position. The horizontal portion has an opening configured to receive a fluid ejection module and the vertical portion has a protruding portion. The protruding portion of the module mount is configured to mate with the recessed portion of the clamp assembly.

A system for printing on a substrate can comprise a conveyor that is configured to move the substrate along a substrate movement axis. The system can further comprise at least one print head array. Each print head array has a plurality of print heads, each print head having a respective orientation axis. The plurality of print heads can have at least a first print head and a second print head, wherein the orientation axis of the first print head is angularly offset from the orientation axis of the second print head. The first print head can be offset from the second print head along the substrate movement axis.

Printheads for a jetting apparatus that may be oriented at different angles to print at different resolutions. In one embodiment, a printhead has a nozzle plate with nozzles arranged in rows that are parallel, and attachment members. The nozzles in each of the rows are spaced by a nozzle distance, and the rows of nozzles are spaced at a distance of n times the nozzle distance. The attachment members may orient the printhead at an angle that is perpendicular to a direction of relative movement between the printhead and a print medium to print at a one resolution, and may orient the printhead at another angle (in a range of 36 and 38 degrees) to the direction of relative movement between the printhead and the print medium to print at a higher resolution.

A method for printing at least one section of a flat or preferably curved surface of an object includes using a relative movement between an inkjet head and the object to move the inkjet head along a first path and print a first track in the process and to move the inkjet head along a second path and print a second track in the process. A first track edge of the first track and a second track edge of the second track meet at a point and enclose an angle between about 1 and about 179 at the point. The method permits the curved surface to be printed without perceptible track connections.

A display panel manufacturing system includes a substrate providing module configured to provide a substrate including an active region on which thin-film transistors are disposed, and a peripheral region adjacent to the active region, a test substrate providing module configured to provide a test substrate, an organic film forming module configured to form an ink pattern on each of the substrate and the test substrate, the organic film forming module including a plurality of heads, each of which is configured to drop an ink, an offset inspection module configured to inspect the ink pattern on the substrate, a pattern inspection module configured to inspect the ink pattern on the test substrate, and a droplet inspection module configured to inspect an ink, which is dropped from a head selected from the heads.

A recording-head position adjustment mechanism includes a beam to suspend a recording head that discharges droplets so that the recording head is drawable out in a predetermined direction; a first supporter disposed at one end of the beam in the predetermined direction and having a support shaft to support the beam; a second supporter disposed at another end of the beam in the predetermined direction with the beam interposed between the first supporter and the second supporter. The second supporter is attached with an adjuster via which the second supporter supports the beam. The adjuster includes a coarse-adjustment shaft member and a fine-adjustment shaft member that are manually rotatable independent of each other. The coarse-adjustment shaft member coarsely adjusts a rotation angle of the beam at which the beam rotates around the support shaft by manual rotation. The fine-adjustment shaft member finely adjusts the rotation angle of the beam.

An inkjet recording apparatus includes recording heads and a head base. The recording heads include a first recording head, a second recording head, a third recording head, and a fourth recording head. The first to fourth recording heads each include three segment recording heads. The segment recording heads eject ink on to paper. The head base supports the 12 segment recording heads. One segment recording head among the 12 segment recording heads is selected as a reference head. The segment recording heads other than the reference head among the 12 segment recording heads are arranged such that longitudinal directions of the segment recording heads other than the reference head are parallel to a longitudinal direction of the reference head. The head base is arranged such that the longitudinal direction of the reference head is orthogonal to a conveyance direction of the paper.

A recording apparatus has a carriage in which a head unit including a recording head is disposed. By turning the head unit within the carriage about a pivot that extends in a direction intersecting a head surface, the angle of the recording head is adjusted while maintaining good contact between a data storage unit included in an ink cartridge and a contact terminal included in the carriage.

An inkjet recording apparatus includes an inkjet head, a head base, a conveyance unit, and a rotation mechanism. The inkjet head ejects ink on to a sheet. The inkjet head is fixed to the head base. The conveyance unit faces the inkjet head and conveys the sheet. The rotation mechanism rotates the head base and the conveyance unit around an axis perpendicular to a sheet conveyance surface of the conveyance unit while maintaining a constant relative position of the head base to the conveyance unit.

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.