Abstract: An ink accommodation body according to the invention is detachably attached to an ink jet recording apparatus, and is packaged with a package body, the ink accommodation body includes an ink accommodation portion that accommodates ink containing a base metal pigment; and an atmosphere opening portion that is connected to the ink accommodation portion at one end, and communicates with an atmosphere, and a hydrogen gas transmission rate of the package body is equal to or greater than 0.0001 ml/cm2·day·atm and equal to or less than 0.01 ml/cm2·day·atm.

Abstract: A piezoelectric element includes a vibration plate; a lower electrode; a piezoelectric film; and an upper electrode, which are laminated in the stated order. An electric field is applied to the piezoelectric film by the lower electrode and the upper electrode. A shape of the piezoelectric film near a boundary face between the piezoelectric film and the upper electrode as viewed from a lamination direction of the piezoelectric film and the upper electrode, is substantially the same as a shape of the upper electrode. A width of the piezoelectric film precipitously extends from an end of the boundary face. A thickness of the piezoelectric film in an area in the width of the piezoelectric film where the upper electrode is not formed, is formed to be proportionate to the precipitous extension of the width of the piezoelectric film.

Abstract: The ink cartridge has a communication unit for allowing an ink storage chamber to communicate with a space outside a housing. The communication unit includes a communication port formed on an outside surface of the housing, a merging channel having an end which communicates with the communication port, and a plurality of branch channels, each having an end which communicates with the merging channel and the other end which communicates with the ink storage chamber. In the branch channel, while ink flows backward, the ink flowing from the merging channel branches into the first branch channel and the second branch channel. At the same time, a ratio (Q1/Q2) between an ink flow rate in the first branch channel and an ink flow rate in the second branch channel while the ink is supplied is smaller than that while the ink flows backward.

Abstract: A component mounting device is provided with a head unit having a first nozzle array including a plurality of nozzle members aligned in a first direction, a second nozzle array that includes a plurality of nozzle members aligned in the first direction and that is aligned in a second direction orthogonal to the first direction. A first linear motor vertically drives the nozzle members of the first nozzle array. A second linear motor drives the nozzle members of the second nozzle array. Each linear motor includes a linear motor main body that includes a stationary element and a mobile element that faces the stationary element in the second direction. The mobile element of the first linear motor and the mobile element of the second linear motor are in close proximity with each other in the second direction and each stationary element is located outside the mobile element.

Abstract: A liquid ejecting head comprises a unit head bonded to a communication substrate. Liquid chamber forming portions are formed in the unit case, along a first direction at positions that are separated by a partition wall. Empty liquid chamber portions and supply-side communication paths are formed in the communication substrate. The supply-side communication paths include a common communication path formed in an opposite side with a thin thickness portion left in the surface side of the communication substrate, and individual communication paths. With a surface of the partition wall and a surface of the thin thickness portion bonded together, the empty liquid chamber forming portions and the empty liquid chamber portions communicate with each other so as to define common liquid chambers.

Abstract: A method of producing an electromechanical transducer element includes forming a first, common electrode on one of a substrate and an undercoat layer; forming an electromechanical transducer film on the first electrode; forming a second electrode on the electromechanical transducer film; forming a first protective film on an upper surface of the second electrode, the electromechanical transducer film, and a side wall of the second electrode, and selectively forming a second protective film on a portion of the first protective film protecting the electromechanical transducer film and the side wall of the second electrode.

Abstract: A liquid discharge apparatus includes: a drive signal generator that generates a drive signal; a piezoelectric element that is displaced in response to a voltage of the drive signal; a cavity which is filled with a liquid and of which an inside volume is expanded and contracted due to the displacement of the piezoelectric element; and a nozzle that communicates with the cavity and is capable of discharging the liquid by the expansion and contraction of the inside volume of the cavity. In the drive signal generator, a set of a first MOSFET and a second MOSFET which are electrically connected in series between a wire of a high potential and a wire of a low potential is arranged in plurality in series. A part or all of the first MOSFETs and the second MOSFETs in the plurality of sets have different sizes from each other.

Abstract: An inkjet printer is provided which can alleviate the degradation of print quality caused by the deviation of ink temperature from a proper temperature range. A controller performs printing while controlling the correspondence of ejection data to nozzle rows so that the ink temperature difference between regions caused by ink ejection operations may be smaller than that in the case where printing is performed with the correspondence of upstream nozzle row ejection data and downstream nozzle row ejection data to an upstream nozzle row and a downstream nozzle row fixed.

Abstract: In an embodiment, a fluid ejection device includes a thin-film layer formed over a substrate, a chamber layer formed over the thin-film layer, the chamber layer defining a fluidic channel that leads to a firing chamber, a slot extending through the substrate and into the chamber layer through an ink feed hole in the thin-film layer, and a particle tolerant thin-film extension of the thin-film layer that protrudes into the slot from between the substrate and the chamber layer.

Abstract: A liquid ejecting head includes a plate which is composed of a material containing silicon, a titanium oxide layer which is disposed above the plate, a bismuth-containing layer which is disposed above the titanium oxide layer and contains bismuth, a first electrode which is disposed above the bismuth-containing layer and composed of platinum, a piezoelectric layer which is disposed above the first electrode and composed of a piezoelectric material containing at least bismuth, and a second electrode which is disposed above the piezoelectric layer.

Abstract: A piezoelectric element which includes an adhesion layer made of composite oxide having perovskite structure including at least one of bismuth, manganese, iron, and titanium; a first electrode provided on the adhesion layer and made of metal preferentially oriented in a (100) face; a piezoelectric body layer provided on the first electrode and made of composite oxide having perovskite structure preferentially oriented in the (100) face; and a second electrode provided on the piezoelectric body layer.

Abstract: A liquid jet head includes a piezoeletric body substrate and an opaque substrate bonded to the piezoelectric body substrate. The piezoeletric body substrate has ejection grooves arrayed with an identical pitch P in a reference direction and non-ejection grooves arrayed alternately with the ejection grooves while shifted from the ejection grooves by a half pitch (P/2). The opaque substrate has through holes arrayed in the reference direction. The through holes include a row of through holes corresponding in number to and communicating with the respective ejection grooves, a first through hole arranged outside of one end side of the row of through holes so that it does not communicate with any of the ejection grooves, and a second through hole arranged outside of another end side of the row of through holes so that it does not communicate with any of the ejection grooves.

Abstract: An inkjet head includes: a pressure chamber in which ink is filled; a nozzle plate which is provided on a first surface of the pressure chamber and which includes a nozzle communicating with the pressure chamber; and a planar drive section which is formed on the nozzle plate so as to extend from above a partition wall of the pressure chamber to above the pressure chamber, excluding a hole area around the nozzle and which has a piezoelectric body.

Abstract: An ink set including: a treatment agent containing 2,2,4-trimethyl-1,3-pentanediol-1-monoisobutyrate or a derivative thereof; and a bright pigment ink containing a bright pigment and water, wherein the treatment agent or the bright pigment ink contains urethane resin; and the ink set satisfies the following conditions (A) and (B): 1?X?6??(A) 0.2?Y/X?2??(B) X: the sum of a blending amount (% by weight) of the urethane resin in the treatment agent and a blending amount (% by weight) of the urethane resin in the bright pigment ink Y: a blending amount (% by weight) of the 2,2,4-trimethyl-1,3-pentanediol-1-monoisobutyrate and the derivative thereof in the treatment agent.

Abstract: A liquid jet head includes a piezoelectric substrate having ejection grooves formed in an upper surface thereof and arranged in a reference direction. A side flow path is formed in a first side surface of the piezoelectric substrate and communicates with the ejection grooves. A cover plate is bonded to the upper surface, and a nozzle plate is bonded to the first side surface and has nozzles communicating with the respective ejection grooves.

Abstract: The invention relates to an ink composition comprising a pigment, an aqueous vehicle, a host compound having a cavity and a surface active agent, wherein the surface active agent is capable of binding to the cavity of the host compound. The invention further relates to a method for preparing such ink compositions and to a method for applying an image onto a receiving medium using such ink composition.

Abstract: A printer compensates for printing errors occurring during production of the layers for the formation of an object in a three-dimensional printer. The printer includes an optical sensor that generates data corresponding to edges of each layer of the object after each layer is printed. Differences between the raster data used to eject the material to form a layer and the data received from the optical sensor are used to modify the raster data that operates a printhead to form a next layer in the object.

Abstract: An inkjet-head includes a first flow path member in which a plurality of first flow paths are formed; and a second flow path member in which a plurality of second flow paths are formed and to which the first flow path member is bonded. The second flow paths have intra-joint-surface flow paths, respectively, which are formed by surrounding, with a first adhesive, a peripheral edge of a groove formed in the second flow path member and bonding the first flow path member thereto. A joint space is formed and includes a plurality of the intra-joint-surface flow paths due to surrounding, with a second adhesive, an outer periphery of the intra-joint-surface flow path and bonding the second flow path member and the first flow path member. At least a part of the second adhesive is formed further inside of a straight line connecting an end of one intra-joint-surface flow path on the outer side and an end of another intra-joint-surface flow path on the outer side in joined surfaces.

Abstract: A silicon nozzle plate has excellent liquid resistance on an inner surface of a nozzle opening and a discharge surface. A plurality of the nozzle openings are disposed in a silicon substrate of the nozzle plate. A tantalum oxide film formed by atomic layer deposition is disposed on both surfaces of the silicon substrate and the inner surface of the nozzle opening.

Abstract: A piezoelectric thin film which is of a perovskite type having a tetragonal crystal structure, the tetragonal crystal having a degree of (100) orientation of 80% or higher. The piezoelectric thin film is constituted of a lead lanthanum zirconate titanate (PLZT) which is a lead zirconate titanate (PZT) in which some of the lead has been replaced with lanthanum.