Disclosed is a method of manufacturing, a metal nozzle plate, in which is formed a nozzle for discharging a liquid and that is to be bonded with adhesive to a head chip provided with an actuator for discharging the liquid, the method including: forming the nozzle in a metal plate-like member; forming a groove in the metal plate-like member; and performing exterior processing with respect to the nozzle plate.

A liquid ejection head includes a liquid ejection face on which multiple ejection port arrays, each of which is formed with multiple ejection ports that eject liquid, are arranged. In the liquid ejection head, a first protrusion and a second protrusion, which have different sizes, are arranged in peripheral areas of the ejection port arrays on the liquid ejection face.

According to one or more embodiments, the inkjet head includes an actuator and a driver. The actuator causes a pressure chamber to expand or contract. The driver applies an ejection pulse to the actuator to eject ink from the pressure chamber. The ejection pulse includes an expansion pulse having a width of 0.75 to 1.25 times a pressure propagation time of the pressure chamber, a rest period after the expansion pulse, and a contraction pulse after the rest period.

The present disclosure provides an inkjet assembly, an inkjet printing apparatus and an inkjet printing method for use in preparation of a display component. The inkjet assembly is for use in an inkjet printing apparatus, including a jet printing member having a first surface. A main inkjet channel, a liquid-phase channel in communication with the main inkjet channel, and a gas-phase channel in communication with the main inkjet channel are formed in the jet printing member. An axial direction of the liquid-phase channel intersects an axial direction of the main inkjet channel, and an axial direction of the gas-phase channel intersects the axial direction of the main inkjet channel. An end opening of the main inkjet channel is formed as a nozzle on the first surface.

A perforate element for use in a print head for non-contact liquid printing comprises: at least one ejection element including an outlet, configured to eject a bulk flow of printing liquid out of the print head; and a liquid residence element, arranged to provide a layer of liquid over the outlet which extends laterally of the outlet and through which the bulk flow is ejected.

A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel.

There are provided a head chip and so on capable of improving the print image quality. The head chip according to an embodiment of the present disclosure is provided with an actuator plate having a plurality of ejection grooves and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves. The plurality of ejection grooves is arranged side by side so as to at least partially overlap each other along a predetermined direction. Further, the nozzle holes adjacent to each other along the predetermined direction out of the plurality of nozzle holes are arranged so as to be shifted from each other along an extending direction of the ejection grooves in the nozzle plate.

A liquid ejection head of a side shooter type includes a plate including nozzles arranged along a first direction and through which liquid is ejected, an actuator including pressure chambers communicating with the nozzles, dummy chambers each disposed between two adjacent pressure chambers, and sidewalls separating the chambers along the first direction and deformable to change a volume of each pressure chamber according to a signal, and covers having apertures and partly covering both ends of each pressure chamber in a second direction intersecting the first direction such that the pressure chambers communicate with a common chamber at both ends thereof through the apertures. Each cover includes a first portion on and between the sidewalls and a second portion other than the first portion, and a first length of the first portion is equal to or greater than a second length of the second portion in the second direction.

In this liquid ejecting head, the pressure chamber extends in a second direction crossing a first direction, the first direction being a direction from the pressure chamber to the nozzle. The pressure chamber and the absorbing chamber are disposed at a same position in the first direction and next to each other in the second direction. The actuator is disposed on an opposite side in the first direction with respect to the pressure chamber. The absorption member is disposed on the opposite side in the first direction with respect to the absorbing chamber, the absorption member including at least part of members constituting the actuator.

A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel.