A method for manufacturing a liquid discharging apparatus having a liquid discharging head that is attached to an apparatus main body so as to be capable of being attached or detached and that discharges a liquid from a nozzle includes: identifying an alignment shift of the liquid discharging head attached to the apparatus main body; and identifying correction information that is correlated with the alignment shift identified in the identifying of the alignment shift based on a correction information table in which the correction information related to liquid discharge control and the alignment shift are correlated with each other.

An ink-jet recording head includes a plurality of recording element substrates each having an ejection pressure generating element configured to generate pressure for ejecting ink from an ink discharge port. The plurality of recording element substrates each include a first surface on which the corresponding ejection pressure generating element is disposed and a second surface, serving as an end surface intersecting with the first surface, being at least partially formed by etching.

A liquid discharge head provided with a member having discharge ports formed configured to discharge liquid thereon, wherein a discharge port surface of the member having discharge ports arrayed thereon includes fumed silica.

In one example, a process for making a micro device structure includes molding a micro device in a monolithic body of material and forming a fluid flow passage in the body through which fluid can pass directly to the micro device.

In an embodiment, a fluid flow structure includes a micro device embedded in a molding, and a fluid feed hole formed through the micro device. A fluid channel is fluidically coupled to the fluid feed hole and includes a first compression molded channel segment and a second material ablated channel segment.

Provided is a manufacturing method of a liquid ejection head, and the manufacturing method includes steps of: providing an ejection orifice forming member on one surface of a wafer, in which an energy-generating element is provided on the one surface of the wafer; forming a recess on the other surface of the wafer; and dicing the wafer along a plurality of dicing lines. The plurality of dicing lines include a dicing line extending in one direction and a dicing line extending in a direction crossing the one direction, and the recess is formed on each of positions overlapping the dicing lines except for an intersection part where the dicing line extending in the one direction intersects the dicing line extending in the direction crossing the one direction.

In a substrate, a first flow channel opened in a first surface of a silicon base material having a crystal orientation of <110>, and a second flow channel opened in a second surface of the silicon base material opposite the first surface are formed to communicate with each other. The second flow channel has an opening width narrower than an opening width of the first flow channel, and a groove portion shallower than a depth of the second flow channel is formed close to the opening of the second flow channel in a region that is inside the opening of the first flow channel and outside the opening of the second flow channel in the second surface.

A liquid ejection head has at least a structure including an ejection orifice forming member having an ejection orifice for ejecting a liquid and a flow path communicating with the ejection orifice and a flow path forming substrate having a liquid introduction flow path communicating with the flow path and supplying the liquid, and includes: a first titanium oxide film with a pure water contact angle of 40° or less; and a second titanium oxide film with a pure water contact angle of 70° or more, wherein the first titanium oxide film covers the structure including inner walls of the flow path and the liquid introduction flow path and is exposed in the flow path and the liquid introduction flow path, and the second titanium oxide film has a portion covering the first titanium oxide film in a vicinity of an opening end.

In an example implementation, a printhead includes a die sliver molded into a molding. The die sliver includes a front surface exposed outside the molding and flush with the molding to dispense fluid, and a back surface exposed outside the molding and flush with the molding to receive fluid. Edges of the die sliver contact the molding to form a joint between the die sliver and the molding.

Provided is a liquid ejection device capable of ejecting a minute liquid droplet with stability, in which a capacity of a pressure chamber facing a second partition portion increases, and a capacity of the pressure chamber facing a first partition portion decreases, at a time when a voltage is applied so that a potential of a first electrode becomes lower than a potential of a second electrode, compared to a time when a voltage is applied so that the potential of the first electrode becomes the same as the potential of the second electrode, the first electrode and the second electrode being included in an electrode formed on each of both side surfaces of partitions.