Provided are a method for manufacturing an ink jet head and an ink jet head. The method includes: arranging a vibrating plate on lower surface of a substrate; arranging a piezoelectric actuator on surface of the vibrating plate; arranging a protective film on surface of the piezoelectric actuator for sealing the piezoelectric actuator along with the vibrating plate, thus preventing the piezoelectric actuator from corrosion; etching the substrate and the vibrating plate to form a groove on the substrate at a position corresponding to the piezoelectric actuator, and form a liquid feeding hole on the substrate and vibrating plate; forming a pressure chamber and a nozzle orifice on lower surface of the vibrating plate, allowing the pressure chamber to cover the position where the piezoelectric actuator is arranged in the vibrating plate, enabling communication of the pressure chamber with the nozzle orifice and the liquid feeding hole.

A manufacturing method of a liquid ejection head, which includes a step of preparing a substrate including a first layer, a step of forming a flow path mold for forming the flow path and a member located outside the mold with a gap between the mold and the member from the first layer, a step of providing a second layer so that the second layer fills the gap and covers the mold and the member located outside the mold with the gap between them, a step of forming an ejection orifice forming member for forming an ejection orifice from the second layer, a step of removing the member located outside the mold with the gap between them, and a step of forming a wall member located outside the ejection orifice forming member with at least a partial gap between the ejection orifice forming member and the wall member.

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.

A printhead manufacturing method includes preparing a printing element substrate including a receiver, first and second input pads, and plural selection pads, and preparing a head substrate including first and second transmission lines. The receiver includes first and second terminals for receiving signals, and the first and second input pads are connected to the first and second terminals, respectively, and the plural selection pads connected to the second terminal via at least two from among plural resistive elements to selectively obtain one of plural combined resistances. At least one of the plural selection pads is selected to be connected to the first transmission line to obtain a value of the one of the plural combined resistances. The selected selection pad is connected to the first transmission line, the first input pad is connected to the first transmission line, and the second input pad is connected to the second transmission line.

An ink composition comprising a nanomaterial and a liquid vehicle, wherein the liquid vehicle includes a composition including one or more functional groups that are capable of being cross-linked is disclosed. An ink composition comprising a nanomaterial, a liquid vehicle, and scatterers is also disclosed. An ink composition including a nanomaterial and a liquid vehicle, wherein the liquid vehicle includes a perfluorocompound is further disclosed. A method for inkjet printing an ink including nanomaterial and a liquid vehicle with a surface tension that is not greater than about 25 dyne/cm is disclosed. In certain preferred embodiments, the nanomaterial includes semiconductor nanocrystals. Devices prepared from inks and methods of the invention are also described.

A liquid discharge cartridge manufacturing method includes a first step of individually shaping a first shaped member and a second shaped member that form a housing of a liquid discharge cartridge, and a second step of joining the first shaped member and the second shaped member to be bonded to each other with molten resin. The first step includes shaping a wall section in the first shaped member, the wall section forming a recess for accommodating the molten resin, and shaping a projection in the second shaped member, the projection extending such that the projection is located at the outer side of the wall section and adjacent to the wall section, with a predetermined gap being formed between the projection and the wall section, when the first and second shaped members are joined.

An ink composition comprising a nanomaterial and a liquid vehicle, wherein the liquid vehicle comprises a composition including one or more functional groups that are capable of being cross-linked is disclosed. An ink composition comprising a nanomaterial, a liquid vehicle, and scatterers is also disclosed. An ink composition comprising a nanomaterial and a liquid. vehicle, wherein the liquid vehicle comprises a perfluorocompound is further disclosed. A method for inkjet printing an ink including nanomaterial and a liquid vehicle with a surface tension that is not greater than about 25 dyne/cm is disclosed. In certain preferred embodiments, the nanomaterial comprises semiconductor nanoerystals. Devices prepared from inks and methods of the invention are also described.

A flow restrictor for restricting flow in an annulus, the flow restrictor comprising a body and a restrictor assembly mounted on the body, wherein the restrictor assembly is actuatable between a run-in configuration and a set configuration in which at least a portion of the restrictor assembly is radially splayed to thereby substantially restrict flow in the annulus, and wherein the flow restrictor is actuatable by fluid flow over the restrictor assembly above a threshold flow rate to actuate the restrictor assembly from the run-in configuration to the set configuration.

An ink composition including a nanomaterial and a liquid vehicle, wherein the liquid vehicle includes a composition including one or more functional groups that are capable of being cross-linked is disclosed. An ink composition including a nanomaterial, a liquid vehicle, and scatterers is also disclosed. An ink composition including a nanomaterial and a liquid vehicle, wherein the liquid vehicle includes a perfluorocompound is further disclosed. A method for inkjet printing an ink including nanomaterial and a liquid vehicle with a surface tension that is not greater than about 25 dyne/cm is disclosed. In certain preferred embodiments, the nanomaterial includes semiconductor nanocrystals. Devices prepared from inks and methods of the invention are also described.

A method of manufacturing a nozzle assembly may include the step of over molding a nozzle housing, or a portion of a nozzle housing, onto at least one nozzle component, such as an injection tube. Nozzle assemblies and flow cytometers incorporating nozzle assemblies may include any combination of straight smooth injection tubes, improved features for securing a nozzle assembly, improved features for debubbilng a nozzle assembly, and aggressive orienting geometries. A method of sorting cells may include the step of magnetically coupling a nozzle assembly with a flow cytometer.