A liquid discharge apparatus includes an individual flow passage member; and a common flow passage member joined to the individual flow passage member in a first direction. The individual flow passage member has nozzle groups formed on a surface on a side opposite to the common flow passage member and connecting hole groups formed on a surface on a side of the common flow passage member; and the common flow passage member has manifold flow passages corresponding to the connecting hole groups respectively. Each of the nozzle groups includes nozzles aligned in a second direction orthogonal to the first direction; and each of the connecting hole groups includes connecting holes aligned in the second direction and connected to the nozzles respectively. Each of the manifold flow passages extends in the second direction and is connected to the nozzles via the connecting holes.

Process for manufacturing a microfluidic device, wherein a sacrificial layer is formed on a semiconductor substrate; a carrying layer is formed on the sacrificial layer; the carrying layer is selectively removed to form at least one release opening extending through the carrying layer; a permeable layer of a permeable semiconductor material is formed in the at least one release opening; the sacrificial layer is selectively removed through the permeable layer to form a fluidic chamber; the at least one release opening is filled with non-permeable semiconductor filling material, forming a monolithic body having a membrane region; an actuator element is formed on the membrane region and a cap element is attached to the monolithic body and surrounds the actuator element.

A liquid ejecting head including a plurality of nozzles, a row of individual flow paths that includes a plurality of individual flow paths arranged in parallel along a second axis orthogonal to the first axis when viewed in a direction of the first axis, and a common liquid chamber that is commonly in communication with the plurality of individual flow paths. In the liquid ejecting head, the plurality of individual flow paths include a first individual flow path and a second individual flow path that are adjacent to each other in the row of individual flow paths, and the level of a first opening that is a connection port between the common liquid chamber and the first individual flow path and the level of a second opening that is a connection port between the common liquid chamber and the second individual flow path are different.

A liquid ejecting head includes: a nozzle; a pressure chamber; a supply flow channel which is located on one side in a first direction relative to the pressure chamber and through which a liquid is supplied to the pressure chamber; a discharge flow channel which is located on another side in the first direction relative to the pressure chamber and through which the liquid is discharged from the pressure chamber; a supply-side compliance substrate which absorbs a vibration of the liquid in the supply flow channel; and a discharge-side compliance substrate which absorbs a vibration of the liquid in the discharge flow channel. A length of the discharge-side compliance substrate in the first direction is shorter than a length of the supply-side compliance substrate in the first direction.

A liquid ejection head includes an ejection opening; a passage in which an energy generation element is disposed; an ejection opening portion that allows communication between the ejection opening and the passage; a supply passage for allowing the liquid to flow into the passage; and an outflow passage for allowing the liquid to flow out to the outside. An expression of H.sup.−0.34×P.sup.−0.66×W>1.7 is satisfied when a height of the passage is set to H [μm], a length of the ejection opening portion is set to P [μm], and a length of the ejection opening portion is set to W [μm].

There is provided a liquid ejecting head including: first and second nozzle rows extending in a first direction; a first supply flow path; a first filter chamber having a first inlet; and a second filter chamber having a second inlet, in which the first and second nozzle rows are shifted from each other in both the first direction and a second direction orthogonal to the first direction, the first supply flow path has a branch flow path for distributing the liquid between the first filter chamber and the second filter chamber at a branch position, the branch position is disposed between the first filter chamber and the second filter chamber in a plan view, and the first and second inlets are disposed at a part where the first filter chamber and the second filter chamber overlap each other when viewed in the second direction.

A wafer structure is disclosed and includes a chip substrate and a plurality of inkjet chips. The chip substrate is a silicon substrate which is fabricated by a semiconductor process on a wafer of at least 12 inches. The plurality of inkjet chips include at least one first inkjet chip and at least one second inkjet chip. The plurality of inkjet chips are directly formed on the chip substrate by the semiconductor process, respectively, and diced into the at least one first inkjet chip and the at least one second inkjet chip, to be implemented for inkjet printing. Each of the first inkjet chip and the second inkjet chip includes a plurality of ink-drop generators produced by the semiconductor process and formed on the chip substrate.

A machine for inkjet decoration of ceramic manufactured articles, comprising a basic frame; one supporting surface having a surface to be decorated, where the supporting surface is movable along a direction; a plurality of printing heads each provided with a plurality of nozzles substantially aligned with each other along a relevant line of action and adapted to dispense ink along a relevant direction of dispensing, each of the heads defining a respective range of action on the surface to be decorated, wherein the heads comprise a fixed head(s) and a swivel head(s), and comprises a plurality of groups of heads, where each of the groups comprises a plurality of rows of heads arranged parallel to each other along a direction transverse to the direction, the heads of each of the rows being staggered with respect to the heads of the adjacent row belonging to the same group.

There is provided an MEMS device in which a first substrate provided with a driving element and a second substrate protecting the driving element are bonded to each other with an adhesive, in which the driving element is formed inside the space surrounded by the adhesive between the first substrate and the second substrate, an open hole which communicates with the space and the outside of the adhesive is formed on the adhesive, and an end of the outside of the open hole is provided to be with an end of the first substrate and an end of the second substrate.

A printing platform includes a printing engine with one or more printheads arranged such that the ink drops are jetted vertically upwards against the action of gravity; and a substrate transportation system where the normal to the surface in contact with the substrate is parallel and with opposite direction to the travelling direction of the jetted ink drops. It is necessary to counteract the weight of the substrate during the printing process to avoid it from falling under the action of gravity. This is achieved through any of a mechanical element that interferes with the falling of the substrate and that keeps it in place; or a system that generates adhesion forces between the element that transmits the motion to the substrate, typically a conveyor belt, and the substrate through the action of electrostatic forces, an air pressure differential between both faces of the substrate, or any other suitable mechanism.