A liquid jet head is accurately positioned to a head installation part of a liquid jet recording device. A positioning structure includes a positioning pin provided to a carriage, and a positioning mechanism provided to an inkjet head, wherein the positioning mechanism includes a contact member having contact with the positioning pin, and a displacement mechanism for displacing the contact member along a displacement axis extending in an oblique direction crossing a direction perpendicular to an installation surface of head installation part, and a contact part of the positioning pin is formed to have a curved surface shape taking a first intersecting axis crossing the installation surface as a central axis, and a contact part of the contact member is formed to have a curved surface shape taking a second intersecting axis as a central axis, the second intersecting axis crossing an imaginary plane including a displacement axis and a vertical axis (the first intersecting axis) extending in a direction perpendicular to the installation surface, and the second intersecting axis being nonparallel to the first intersecting axis.

A liquid ejecting head is mounted on a carriage in which a first positioning hole defined by a first inner surface is provided. The liquid ejecting head includes a first positioning member and a first intermediate member. The first intermediate member includes a first expansion portion being capable of being inserted into a first positioning hole and abutting on the first inner surface by expanding in a radial direction intersecting with an insertion direction of the first expansion portion. The first expansion portion includes a first insertion hole into which the first positioning member is inserted and expands in the radial direction by the first positioning member being inserted into the first insertion hole.

Provided is a printer having: a carriage configured to carry and move a printhead; a camera attached to the carriage and configured to photograph an image printed by the printhead; an adjustment mechanism configured to adjust an installation position of the camera; and a processor configured to control to move the carriage to a position of a predetermined specific mark, photograph the specific mark by the camera, and based on a photographed image of the specific mark, adjust an installation position of the camera by the adjustment mechanism.

Provided are a fringe information measuring apparatus that measures information on a fringe region using a temperature sensor array and a substrate treating system including the same. The fringe information measuring apparatus comprises: a laser sensor configured to output a first laser light and a second laser light to intersect each other; a thermal sensor array configured to pass through a fringe region formed by the intersection of the first laser light and the second laser light; and a control module configured to measure a position of the fringe region based on information obtained when the thermal sensor array passes through the fringe region.

A liquid discharge apparatus records dots of liquid on a medium by interlace recording. The liquid discharge apparatus includes a head, a mover, a tilt adjuster, and control circuitry. The head discharges the liquid from nozzles. The mover relatively moves the head and the medium in each of main-scanning and sub-scanning directions. The tilt adjuster changes a tilt of the head with respect to the medium. The control circuitry controls recording on the medium. The control circuitry causes the mover to relatively move the head and the medium in the main-scanning direction with the head tilted to at least a first angle or a second angle. An interval between adjacent nozzles in the sub-scanning direction is a first interval in a state where the tilt is the first angle. The interval is a second interval different from the first interval in a state where the tilt is the second angle.

An image processing device, which generates recording data for causing a recording head which includes an overlapping portion in which nozzles of a first nozzle column and a second nozzle column are partially overlapped in a nozzle aligning direction of the nozzle column to eject liquid droplets, includes a predetermined inclination correction amount obtaining unit which obtains a predetermined inclination correction amount for correcting recording density which is changed when the recording head is inclined by a predetermined angle from a reference position, with respect to recording density of the liquid droplets using nozzles of the overlapping portion; an inclination angle obtaining unit for obtaining an inclination angle of the recording head from the reference position; and a recording data generating unit for generating the recording data so that recording density of the liquid droplets using the nozzles of the overlapping portion is corrected based on the predetermined inclination correction amount, and the inclination angle of the recording head.

A modular inkjet printhead assembly including a plurality of printhead modules mounted on both sides of a central rail assembly. The rail assembly includes a beam and two parallel sets of rod segments attached to upstream and downstream edges of the beam. The printhead modules include a jetting module having an array of nozzles, a first alignment tab having a first alignment datum and a second alignment datum, a second alignment tab having a third alignment datum and a fourth alignment datum, a rotational alignment feature including a fifth alignment datum, and a cross-track alignment feature including a sixth alignment datum. Portions of the alignment tabs of the jetting module are adapted to fit within corresponding notches in the beam. A clamping mechanism and a cross-track force mechanism apply forces to the jetting module that causes each alignment datum to engage with corresponding alignment features on the rail assembly.

An inkjet printing device according to the present embodiment includes an alignment plate, a substrate positioned on one surface in a third direction of the alignment plate, and an inkjet head combined with the substrate, wherein the alignment plate includes a first position adjustor positioned on a first side surface in a first direction of the alignment plate, and a second position adjustor, a third position adjustor, a fourth position adjustor, a fifth position adjustor, and a sixth position adjustor positioned at a second side surface in a second direction of the alignment plate, and each of the position adjustors adjusts the position of the substrate.

Mechanisms for adjusting the position of one or more print heads at an extremely fine resolution (e.g., less than 10 m) are described herein. The adjustment mechanisms include a differential screw and an indexing wheel through which the differential screw extends. One threaded segment of the differential screw is connected to a threaded feature of a flexible body that is coupled to the print head(s), while another threaded segment of the differential screw is connected to a threaded feature of a rigid body that is coupled to a printer assembly. As the indexing wheel and differential screw rotate, the space between the flexible body and the rigid body changes based on the difference between the pitches of the threaded segments. The adjustment mechanisms described herein utilize the accurate, consistent motion of the flexible body upon experiencing pressure to effect predictable changes in the position of the print head(s).

An inkjet printhead assembly includes a repositionable shutter mechanism adapted to block a slot through which drops of ink ejected from the array of nozzles pass before they impinge on the print medium. The shutter mechanism includes a repositionable shutter blade extending in a cross-track direction having a pivot axis passing through first and second tabs affixed to its ends. A first slide mechanism component is pivotably attached to an end of an actuator rod, and a second slide mechanism component is rigidly attached to the repositionable shutter blade. An actuator is configured to translate the actuator rod, thereby pivoting the repositionable shutter blade about the pivot axis between a first pivot position where the shutter blade blocks the slot and a second pivot position where the shutter blade is moved away from the slot so that drops of ink can pass through the slot.