A printer comprising a printhead configured to selectively cause a mark to be created on a substrate. The printer comprises in a stepper motor having an output shaft coupled to the printhead, the stepper motor being arranged to vary the position of the printhead relative to a printing surface against which printing is carried out, and to control the pressure exerted by the printhead on the printing surface. The printer further comprises a sensor configured to generate a signal indicative of an angular position of the output shaft of the stepper motor. The printer further comprises a controller arranged to generate control signals for the stepper motor so as to cause a predetermined torque to be generated by the stepper motor; said control signals being at least partially based upon an output of said sensor.

A printer comprising a printhead configured to selectively cause a mark to be created on a substrate. The printer comprises in a stepper motor having an output shaft coupled to the printhead, the stepper motor being arranged to vary the position of the printhead relative to a printing surface against which printing is carried out, and to control the pressure exerted by the printhead on the printing surface. The printer further comprises a sensor configured to generate a signal indicative of an angular position of the output shaft of the stepper motor. The printer further comprises a controller arranged to generate control signals for the stepper motor so as to cause a predetermined torque to be generated by the stepper motor; said control signals being at least partially based upon an output of said sensor.

A guide device includes a guide configured to movably hold and guide a moving-object, and a stay to which the guide is attached. The stay includes an attachment portion including an attachment surface to which the guide is attached, a facing portion facing the attachment portion, and an adjuster configured to change a distance between the attachment portion and the facing portion to partially displace the attachment surface. The adjuster includes an adjustment plate arranged between the attachment portion and the facing portion, and a push member configured to push the adjustment plate to move the attachment portion of the stay.

An inkjet printer capable of improving uniformity of the quality of an image printed on a recording medium is provided and includes: a table formed with a support surface that supports a recording medium; an inkjet head formed with a nozzle that ejects ink; a Y-bar that supports the inkjet head to be movable in a main scanning direction; two lifting mechanisms capable of changing a Y-bar tilt serving as a tilt of the Y-bar with respect to the support surface; a head gap sensor that detects a head gap, which is a distance from the recording medium to the nozzle of the inkjet head; and a tilt adjustment portion that adjusts the Y-bar tilt by the two lifting mechanisms to a tilt that reduces variations of the head gaps detected by the head gap sensor at each of multiple positions in the main scanning direction.

An inkjet printer capable of improving uniformity of the quality of an image printed on a recording medium is provided and includes: a table formed with a support surface that supports a recording medium; an inkjet head formed with a nozzle that ejects ink; a Y-bar that supports the inkjet head to be movable in a main scanning direction; two lifting mechanisms capable of changing a Y-bar tilt serving as a tilt of the Y-bar with respect to the support surface; a head gap sensor that detects a head gap, which is a distance from the recording medium to the nozzle of the inkjet head; and a tilt adjustment portion that adjusts the Y-bar tilt by the two lifting mechanisms to a tilt that reduces variations of the head gaps detected by the head gap sensor at each of multiple positions in the main scanning direction.

A liquid ejecting apparatus includes: a liquid ejecting head including a plurality of nozzles for discharging liquid and a supply passage through which the liquid to be supplied to the plurality of nozzles flows. The nozzles are arranged in a line; one of the nozzles at a first end of the line being a first end nozzle, whereas one of the nozzles at a second end of the line being a second end nozzle. A height of the first end nozzle is set to be greater than a height of the second end nozzle. The liquid flows through the supply passage in a direction from the first end nozzle to the second end nozzle.

A thermal printer comprises a base part, a holding member, a printing device and a platen roller. When an uneven pressing force is applied to the printing device by the recording paper sheet, the printing device is capable of swinging about the support pin serving as a fulcrum in order to even out the pressing force. The deformable mechanism is capable of being plastically deformed to keep the position of the printing device. An elastic element is disposed between the holding member and the base part, and due to the elastic element, both the printing device and the platen roller are in close contact with the recording paper sheet when the recording paper sheet is clamped between the printing device and the platen roller. The printing force of the printing device acting on the printing paper sheet can be distributed more even to achieve clearer printing.

A thermal printer comprises a base part, a holding member, a printing device and a platen roller. When an uneven pressing force is applied to the printing device by the recording paper sheet, the printing device is capable of swinging about the support pin serving as a fulcrum in order to even out the pressing force. The deformable mechanism is capable of being plastically deformed to keep the position of the printing device. An elastic element is disposed between the holding member and the base part, and due to the elastic element, both the printing device and the platen roller are in close contact with the recording paper sheet when the recording paper sheet is clamped between the printing device and the platen roller. The printing force of the printing device acting on the printing paper sheet can be distributed more even to achieve clearer printing.

A liquid discharge device includes a liquid discharge head to discharge a liquid, a head holder to hold the liquid discharge head, a sub-carriage to hold the head holder, a carriage to hold the sub-carriage and move in a main scanning direction, an adjuster supported by the sub-carriage, and a guide to guide the sub-carriage to be movable in a vertical direction. The carriage includes a reference shaft extending in the main scanning direction, the reference shaft supports the sub-carriage via the adjuster and positions the sub-carriage in the vertical direction, the adjuster adjusts an inclination of the sub-carriage with respect to the reference shaft, the sub-carriage includes a sub-reference shaft extending in parallel with the reference shaft, and the guide allows the sub-reference shaft to move in the vertical direction while restricting a movement of the sub-reference shaft in a sub-scanning direction perpendicular to the main scanning direction.

Described is an assembly of a guiding structure and a print head carriage, the print head carriage comprising a base carriage controllably movable relative to the guiding structure along a first horizontal axis, the print head carriage comprising a sub-carriage controllably movable relative to the base carriage along a second horizontal axis. The print head carriage comprises an intermediate carriage controllably movable relative to the base carriage along a vertical axis, the sub-carriage mounted on the intermediate carriage for moving together with the intermediate carriage relative to the base carriage, the sub-carriage controllably movable relative to the intermediate carriage along the second horizontal axis.