The present invention includes a plurality of substrate stages which are provided under a head unit, on which substrates are loaded, and which move along a rail, a head unit is controlled to perform first printing on a substrate at a first position, and after the substrate stage moves, perform second printing on the one substrate at the first position or a second position, and thus a total tact time can be decreased and productivity can be improved.

The area necessary to install the liquid jet head to be positioned by a positioning mechanism is reduced. An inkjet head is provided with a head main body for jetting ink, a base member which supports the head main body, and is installed on an installation surface of a carriage, and a positioning mechanism which adjusts a position of the base member in a direction along the installation surface with respect to a positioning pin disposed on the installation surface, wherein the positioning mechanism is supported by the base member, and at least a part of the positioning mechanism is arranged inside an outer shape of the base member in a plan view of the installation surface viewed from a vertical direction thereof.

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.

An image forming apparatus includes a liquid discharge device and processing circuitry. The liquid discharge device includes at least one nozzle group, where N represents an integer, to discharge liquid. The processing circuitry causes the first nozzle group to discharge in a first scan, causes the second nozzle group to discharge in a second scan, and causes the N-th nozzle group to discharge in an N-th scan to form a complete image. The processing circuitry, with respect to an image completion rate indicating a rate of an image formed by each of the first nozzle group to the N-th nozzle group in the complete image, sets the image completion rate of a portion of the first nozzle group adjacent to the second nozzle group in the sub-scanning direction to be not higher than the image completion rate of any one of the second nozzle group to the N-th nozzle group.

A control unit obtains a captured image of a reference workpiece by a second image capturing unit after a droplet ejected from a droplet ejecting head lands toward a reference mark formed on an upper surface of the reference workpiece, detects a positional deviation amount of a position of the reference mark and a landing position of the droplet based on the captured image, and calculates the correction amounts of the relative positions of a workpiece table and a droplet ejecting head based on the positional deviation amount.

A processor identifies print defect locations where printing defects occur and a assigns different sensitivity values to different zones of a job image being prepared for printing by a printing engine. The processor changes the orientation of the job image to a revised orientation, relative to print media, to avoid locating one or more high-sensitivity zones of the job image in the print defect locations. The high-sensitivity zones are ones of the zones having a sensitivity value above a threshold sensitivity value. The printing engine prints the job image on the print media at the revised orientation.

A recording apparatus includes a head unit including a recording head and configured to move between a recording position where recording is performed on a medium and a retraction position away from a medium transportation path; a movement mechanism that moves the head unit; and a positioning portion configured to position the head unit at the recording position. A moment for rotating the head unit is produced by a force applied by the movement mechanism to the head unit and by a reaction force received by the head unit from the positioning portion. A unit pusher configured to apply, to the head unit, a force acting in a direction of canceling rotation of the head unit when the head unit is located at the recording position pushes the head unit in a direction intersecting with a moving direction of the head unit.

Examples relate to computer-implemented methods for a printing system comprising a printhead, and to printing systems. A method for a printing system comprises retrieving a stored first offset applied to the printhead to align the printhead, the first offset determined based on a first user input signal; and further aligning the printhead according to a further offset determined based on a further user input signal, the further offset indicating a difference from the first offset.

A wiping device includes a wiping member and a moving part. The wiping member wipes a liquid off a nozzle surface of a recording head. The moving part moves the wiping member along the nozzle surface in a predetermined moving direction. The wiping member performs a first wiping operation in which the wiping member is moved while not coming into contact with the nozzle surface but coming into contact with the liquid adhering to the nozzle surface, and a second wiping operation in which the wiping member is moved while coming into contact with the nozzle surface after the first wiping operation.

A printing apparatus and a method of providing printing apparatus are provided. A printing apparatus according to at least one embodiment of the present disclosure includes a base panel or head base, at least one or more head packs installed on the head base, a head pack holder installed on each of the head packs and configured to handle and fix the head pack, and a fastening structure configured to mount the head pack holder to the head packs.