The head (8) of an ink discharge device (1) discharges ink into a recording medium being conveyed. A movement unit (12) moves the head (8) in the height direction (Z-axis direction) when the printing surface of the recording medium is set as the front surface. A controller (10) sets a discharge time gap, which is the gap between the nozzle (81) and the printing surface during ink discharge, in accordance with the image to be printed and the recording medium. The controller (10) causes the movement unit (12) to move the head in the Z-axis direction so as to reach the set discharge interval.

A liquid discharge device includes a discharge head configured to discharge a liquid on a medium conveyed, a carriage on which the liquid discharge head and a liquid cartridge are mounted configured to move in an X-axis direction, a cap disposed outside a conveying area in the X-axis direction, and configured to have contact with a nozzle surface of the discharge head on which a nozzle opens, and a control section configured to control moving of the carriage. When one of the replacement of the liquid cartridge and refill of the liquid container is performed, the control section locates the carriage at the first position where the nozzle surface is opposed to the area between the conveying area and the cap in the X-axis direction.

A liquid discharging device includes a carriage carrying a head configured to discharge a liquid onto a target, the liquid including an ink, the ink consisting water, an organic solvent, a coloring material, and a plurality of polysiloxane compounds, a driving unit configured to move the carriage and the target relatively to each other, a measuring unit configured to measure the distance between the carriage and the target, an image-capturing unit configured to capture a target image, and a setting unit configured to set a liquid discharging performance of the head based on a measurement result obtained by the measuring unit and the target image obtained by the image-capturing unit.

A liquid discharging device includes a carriage carrying a head configured to discharge a liquid onto a target, the liquid including an ink, the ink consisting water, an organic solvent, a coloring material, and a plurality of polysiloxane compounds, a driving unit configured to move the carriage and the target relatively to each other, a measuring unit configured to measure the distance between the carriage and the target, an image-capturing unit configured to capture a target image, and a setting unit configured to set a liquid discharging performance of the head based on a measurement result obtained by the measuring unit and the target image obtained by the image-capturing unit.

A liquid discharging apparatus includes a head unit having a liquid discharging head that has a driving element, a position detection circuit that outputs a position information signal indicative of a position of the liquid discharging head, a first circuit that controls drive of the driving element based on a first signal, and a first conversion circuit that converts a first optical signal into the first signal; and a driving circuit having a second circuit that outputs a second signal, a second conversion circuit that converts the second signal into the first optical signal, a first cable, and a second cable, in which the first cable connects the first conversion circuit to the second conversion circuit, and propagates the first optical signal, and the second cable electrically couples the position detection circuit to the second circuit, and propagates the position information signal.

a part of a first head is positioned in the second part, a part of a second head is positioned in the third part, a part of a third head is positioned in the fifth part, a part of a fourth head is positioned in the sixth part, and a first color is cyan and a third color is magenta.

A liquid discharge apparatus includes a liquid discharge head, a scanning device, a conveyance device, a reading device, control circuitry, and a detecting device. The liquid discharge head is configured to discharge liquid to a target object. The scanning device is configured to move the liquid discharge head in a main scanning direction. The conveyance device is configured to convey the target object in a direction perpendicular to the main scanning direction. The reading device is disposed at a predetermined position with respect to the liquid discharge head. The control circuitry is configured to change a detection pattern image for detecting a defective nozzle, in accordance with a feed amount of the target object in the sub-scanning direction. The detecting device is configured to identify a nozzle corresponding to a defective portion of the detection pattern image read by the reading device.

A liquid discharge apparatus includes a liquid discharge head, a scanning device, a conveyance device, a reading device, control circuitry, and a detecting device. The liquid discharge head is configured to discharge liquid to a target object. The scanning device is configured to move the liquid discharge head in a main scanning direction. The conveyance device is configured to convey the target object in a direction perpendicular to the main scanning direction. The reading device is disposed at a predetermined position with respect to the liquid discharge head. The control circuitry is configured to change a detection pattern image for detecting a defective nozzle, in accordance with a feed amount of the target object in the sub-scanning direction. The detecting device is configured to identify a nozzle corresponding to a defective portion of the detection pattern image read by the reading device.

A liquid ejecting head includes an ejection surface including head chips, and a first-positioning-portion and a second-positioning-portion disposed in a second-direction orthogonal to a first-direction with respect to the ejection surface and positioning a holding member, the liquid ejecting head has a first-edge and a second-edge separated from each other in the first-direction and extending along a third-direction parallel to the ejection surface and inclined with respect to the first-direction and the second-direction, and one end portion and the other end portion forming both end portions in the second-direction, and the first-positioning-portion does not overlap a virtual parallelogram having a first-virtual side contacting the first-edge and extending along the third-direction, a second-virtual side contacting the second-edge and extending along the third-direction, a third-virtual side contacting the one end portion and extending along the first-direction, and a fourth-virtual side contacting the other end portion and extending along the first-direction.

An inkjet recording apparatus includes a recording head including an ejection port surface and a nozzle cover, wherein the ejection port surface includes an array of a plurality of ejection ports through which ink is to be ejected, and wherein the nozzle cover protrudes downward with respect to the ejection port surface and is disposed on an outer side of the ejection port surface, a wiper unit capable of wiping the ejection port surface and the nozzle cover, and a moving mechanism configured to move the wiper unit relative to the ejection port surface, wherein the wiper unit has a notch at a position at which the notch faces a first step portion between the ejection port surface and the nozzle cover when the wiper unit performs wiping while the wiper unit is moved by the moving mechanism.