Mechanisms for adjusting the position of one or more print heads at an extremely fine resolution (e.g., less than 10 μm) 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).

A recording device has: a recording head configured to perform recording on a medium; a medium storage below the recording head configured to store the medium to be recoded; a supply path comprising a first curved supply path curved so as to be convex upward and transporting the medium fed out of the medium storage in a reversed direction via the first curved supply path; and a reversing path comprising a second curved path curved so as to be convex downward and transporting the recorded medium into a direction including a vertically upward component via second curved path from a direction including a vertically downward component; wherein the supply path joins the reversing path, and the first curved path and the second curved path overlap when viewed horizontally.

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.

A printer includes a platen, a head which ejects light-curable ink to a printing object placed on the platen, a lamp which irradiates the printing object, on which the light-curable ink ejected from the head is adhered, with light, a carriage which supports the head and the lamp and which moves the head and the lamp in a main scanning direction, an ink recovering mechanism which faces a predetermined position within a predetermined area where the head is movable with movement of the carriage and which recovers the light-curable ink ejected from the head, and a controller which controls the head, the lamp, the carriage, and the ink recovering mechanism.

A pattern formation device, a liquid ejection device, and an electrical fault detection method capable of detecting electrical fault of a liquid ejection head on the basis of an analysis result of an electrical fault detection pattern are provided. An electrical fault detection pattern having an arrangement of dot arrays satisfying an arrangement condition with an arrangement of a plurality of ejection elements in a liquid ejection head is formed by ejecting liquid from a liquid ejection head in which M rows of ejection element groups in which a plurality of ejection elements are arranged in a first direction are arranged in a second direction intersecting the first direction, and M is an integer equal to or greater than 2.

An electrohydrodynamic inkjet printing device, including: a support part; a jet printing module; a substrate bearing and moving module; and a roll-to-roll thin film conveying module. The jet printing module is disposed on the support part and includes a nozzle for ejecting printing fluid onto a substrate for pattern printing. The substrate bearing and moving module is disposed on the support part, and fixedly bears a rigid substrate as the substrate for pattern printing, and drives the rigid substrate to move with respect to the jet printing module. The roll-to-roll thin film conveying module is disposed on the support part, and transfers a flexible thin film as the substrate for pattern printing, and drives the flexible film to move with respect to the jet printing module.

An electrohydrodynamic inkjet printing device, including: a support part; a jet printing module; a substrate bearing and moving module; and a roll-to-roll thin film conveying module. The jet printing module is disposed on the support part and includes a nozzle for ejecting printing fluid onto a substrate for pattern printing. The substrate bearing and moving module is disposed on the support part, and fixedly bears a rigid substrate as the substrate for pattern printing, and drives the rigid substrate to move with respect to the jet printing module. The roll-to-roll thin film conveying module is disposed on the support part, and transfers a flexible thin film as the substrate for pattern printing, and drives the flexible film to move with respect to the jet printing module.

A method is provided that is implemented on a control device connected with an inkjet printer, which includes an inkjet head having an ink discharging surface, a head scanning unit reciprocating the inkjet head relative to a recording sheet along a scanning direction parallel to the ink discharging surface, and a wave shape generating mechanism deforming the recording sheet in a predetermined wave shape that has tops of portions protruding in a first direction toward the ink discharging surface and bottoms of portions recessed in a second direction opposite to the first direction alternately arranged along the scanning direction, the method including acquiring gap information related to a gap between the ink discharging surface and each individual one of the tops and the bottoms on the recording sheet, and determining whether the gap information acquired for each individual one of the tops and the bottoms is abnormal.

A method is provided that is implemented on a control device connected with an inkjet printer, which includes an inkjet head having an ink discharging surface, a head scanning unit reciprocating the inkjet head relative to a recording sheet along a scanning direction parallel to the ink discharging surface, and a wave shape generating mechanism deforming the recording sheet in a predetermined wave shape that has tops of portions protruding in a first direction toward the ink discharging surface and bottoms of portions recessed in a second direction opposite to the first direction alternately arranged along the scanning direction, the method including acquiring gap information related to a gap between the ink discharging surface and each individual one of the tops and the bottoms on the recording sheet, and determining whether the gap information acquired for each individual one of the tops and the bottoms is abnormal.

There is provided a recording device including a transport section that transports paper along a support surface; a recording section; a determination region setting section; a liquid volume ratio calculation section; a determination section; and a recording position adjustment section that, when the determination section determines that the average value is larger than the threshold, adjusts a distance of the recording section from the support surface to a distance which is longer than a case in which the average value is not larger than the threshold.