A liquid discharge apparatus includes a head configured to discharge a liquid, a circulation passage through which a temperature-controlled liquid circulates, at least two heat generation portions different in heat generation amount from each other, and a cooler configured to cool the temperature-controlled liquid. The circulation passage is coupled to the head. The at least two heat generation portions are thermally coupled with the circulation passage in an ascending order of heat generation amount and downstream from the cooler in a direction of flow in the circulation passage.

The present disclosure includes a description of an example printhead having multiple ejection dies. The ejection dies are coupled to a temperature sensor and send temperature signals to a controller. The printhead can also include a heater coupled to the ejection dies to apply heat to at least one ejection die.

A liquid discharge head according to an embodiment includes a head body having a first surface configured to discharge a liquid and a second surface facing the first surface, a drive IC positioned away from the second surface of the head body, and a head cover configured to cover at least the second surface of the head body while housing the drive IC. The head cover includes a top plate facing the second surface of the head body and a first side plate extending in one direction that is a direction from the top plate toward the second surface, the first side plate includes a first portion that is in contact with the drive IC, and that extends in the one direction, and a second portion positioned in a portion closer to the second surface than the first portion, and the second portion includes a diameter expanding portion having a diameter that expands toward the second surface.

A liquid ejecting head includes: a plurality of head chips having nozzles; a holder holding the plurality of head chips; and a planar heater disposed on the holder and heating the holder, in which the heater includes an outer peripheral region along an outer edge of the holder and a middle region positioned inside the outer peripheral region in a plan view, and a heat generation amount per unit time of the outer peripheral region is larger than a heat generation amount per unit time of the middle region.

A liquid discharge apparatus includes a plurality of heads configured to discharge a liquid, a liquid supply manifold configured to distribute the liquid to the plurality of heads, and a temperature-controlled liquid supply manifold configured to supply a temperature-controlled liquid to the plurality of heads. The temperature-controlled liquid supply manifold is thermally coupled to the liquid supply manifold.

A liquid discharge device in which an inter-wiring region between a first wiring through which a first drive signal, and a second wiring through which a second drive signal propagates includes a wide inter-wiring region in which an inter-wiring distance between the first wiring and the second wiring is larger than a sum of a wire width of a fourth wiring and a minimum diameter of a via wiring, and a narrow inter-wiring region in which the inter-wiring distance is smaller than the sum of the wire width of the fourth wiring and the minimum diameter of the via wiring, and larger than a wire width of the via wiring, and a third wiring is not located in the narrow inter-wiring region between a virtual line coupling a first terminal and a second terminal, and the wide inter-wiring region, in the inter-wiring region of a first wiring layer.

A recording device includes a recording unit configured to perform recording on a medium, and a discharge tray located above the recording unit in a height direction of the recording device and configured to support the medium discharged after recording is performed thereon, and a flow path of air for cooling a cooling target is formed along a lower surface of the discharge tray. The recording unit is an example of the cooling target.

A liquid discharge head according to an embodiment includes a head body having a first surface configured to discharge a liquid and a second surface facing the first surface, a drive IC configured to drive the head body, and a head cover configured to cover at least the second surface of the head body while housing the drive IC. The head cover includes a top plate facing the second surface of the head body and a first side plate that is connected to the top plate and that is in contact with the drive IC, and in the head cover, a thickness of the first side plate is thinner than a thickness of the top plate.

A liquid ejection apparatus includes a head unit that ejects a liquid, and a control unit that controls an operation of the head unit, wherein the head unit includes a drive signal output circuit that outputs a drive signal, a first substrate on which the drive signal output circuit is provided, and a first ejection head including a first drive element driven by the drive signal, and a first nozzle plate including a first nozzle from which a liquid is ejected by driving the first drive element, wherein the first substrate includes a first face and a second face, wherein the drive signal output circuit is provided on the first face, and wherein a shortest distance between the first nozzle plate and the second face is shorter than a shortest distance between the first nozzle plate and the first face.

Systems and techniques for depositing organic material on a substrate are provided, in which one or more shield gas flows prevents contamination of the substrate by the chamber ambient. Thus, multiple layers of the same or different materials may be deposited in a single deposition chamber, without the need for movement between different deposition chambers, and with reduced chance of cross-contamination between layers.