A liquid discharge apparatus includes a liquid discharge head to discharge liquid, a head holder to hold the liquid discharge head, a sub-carriage to hold the head holder, and a carriage to hold the sub-carriage and which is movable in a main scanning direction. The carriage includes a reference extending along the main scanning direction that holds and positions the sub-carriage in the carriage. The head holder includes a rotation reference around which the head holder is rotatable with respect to the sub-carriage, and an angle adjuster to regulate a rotation and adjust an angle of the rotation of the head holder with respect to the sub-carriage.

A liquid ejecting apparatus RIM which ejects liquid onto a medium includes a carriage which includes a control substrate which configures at least a part of a control unit which controls driving of the entire liquid ejecting apparatus, a plurality of ejecting units which eject the liquid, a plurality of driving substrates which are connected to the control substrate, connected to the plurality of ejecting units in one-to-one correspondence, and drives the ejecting unit, an ejecting unit-driving substrate accommodating unit which accommodates the ejecting unit and the driving substrate, and a control substrate accommodating unit which accommodates the control substrate, in which the plurality of driving substrates are connected to the control substrate.

There is provided a printing apparatus including: a base; a thermal head; a first motor; a second motor; a head holding member holding the thermal head; a first pivoting member and a second pivoting member pivotally supported by the base; a guide rail extending in a second direction and connected to a first end of the first pivoting member on a first side in a first direction and to a second end of the second pivoting member on the first side in the first direction; a head pressing member which is in contact with the guide rail to be slidable in the second direction and facing the thermal head from a first side in a third direction; and a movement mechanism configured to move the head holding member in the second direction through driving of the second motor.

This disclosure is directed to securing, with a simple structure, a head to a position in a carriage without having to fasten screws so as to prevent possible loss of a desired printing quality. A carriage is provided that includes a main housing mounted to a printing unit body, an eccentric cam rotatably disposed in the main housing, a sub housing that holds a head that ejects ink droplets. The sub housing makes contact with a cam face of the eccentric cam and is movable upward and downward relative to the main housing in response to rotation of the eccentric cam. The carriage further includes a rotation regulator that regulates rotation of the sub housing around a rotating shaft of the eccentric cam.

There is provided a printing apparatus, including: a base; a thermal head including heating elements arranged in a first direction; a head holding member disposed to be slidable on the base in a second direction intersecting with the first direction and a third direction intersecting with the first direction and the second direction; a rolling member; a first pivoting member; a second pivoting member; a first guide rail extending in the second direction; a first sliding member held by the first guide rail to be slidable on the base in the second direction and having a contact surface which is in contact with the rolling member from a first side in the third direction; a first movement mechanism configured to pivotally move the first pivoting member and the second pivoting member; and a second movement mechanism configured to move the head holding member in the second direction.

A liquid discharge apparatus includes a liquid discharge head to discharge liquid to a medium to form liquid surface on the medium, an irradiator to radiate active energy rays onto the liquid surface, a carriage mounting the liquid discharge head and the irradiator, a scanner to scan the carriage in a main scanning direction, a height adjuster to adjust an irradiation distance between the irradiator and the liquid surface by relatively moving the carriage and the medium, a conveyor to move the medium and the carriage relatively in a sub-scanning direction perpendicular to the main scanning direction, and control circuitry to control the irradiator to irradiate the liquid surface with the active energy rays while scanning the carriage in the main scanning direction.

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).

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.

A moving body support apparatus including a main shaft, a sub-shaft that is arranged to be spaced from the main shaft, and a carriage that moves along the main shaft while causing a contact surface to be in contact with the sub-shaft is provided. A distance between the main shaft and the sub-shaft changes along a moving direction of the moving body. A printing apparatus including the moving body support apparatus is also provided.