Abstract: A liquid droplet ejecting head of an aspect of the invention includes: a nozzle ejecting a liquid-droplet; a liquid flow path member in which a liquid is supplied toward the nozzle; a back-pressure generating unit applying back-pressure to the liquid in a liquid-flow-path toward the nozzle; a beam member joined together with or including the liquid flow path member, deforming to become concave in a liquid-droplet ejection direction, thereafter undergoing buckling reverse deformation to become convex in the ejection direction, and applying inertia to the liquid near the nozzle in the ejection direction, to cause the liquid near the nozzle to be ejected; an opening disposed on an opposite side of the liquid flow path member in the ejection direction and communicated with the atmosphere; a suction path whose suction opening is directed toward near the nozzle; and a negative-pressure generating unit generating negative-pressure in the suction path.

Abstract: There is provided a liquid droplet discharging device including: a liquid passage member provided with a liquid passage into which a liquid is supplied; plural nozzles provided for the liquid passage member and each discharging the liquid contained in the liquid passage; a holding member that holds both end portions of the liquid passage member; and a drive unit that drives at least one of the holding members, and deforms the liquid passage member from a concave state to a convex state in the liquid droplet discharge direction, imparts inertial force to the liquid, and discharges liquid droplets from the nozzles.

Abstract: A fastening device includes a rotational drive portion that rotationally drives a socket, an advance/retract drive portion that causes this socket to advance or retract along a rotational axis thereof, a magazine that retains a plurality of heads that retain bolts, and a switching portion that moves this magazine to selectively position one of a plurality of heads ahead and on the rotational axis of the socket. One of the heads is selected and positioned on the rotational axis of the socket by the switching portion, then the socket is advanced by the advance/retract drive portion and the head thus selected is retained by the socket, then the socket is advanced further by the advance/retract drive portion and the head to detach is detached from the magazine, and then the head is rotated by driving the rotational drive portion, thereby fastening a bolt retained in the head.

Abstract: A workpiece assembling method uses an assembly work cell, the assembly work cell including: a worker station at which a worker works; an apparatus station at which an apparatus works; and a transfer unit that transfers a workpiece to be processed between the worker station and the apparatus station. In the method, the workpiece to be processed is alternately moved by the transfer unit between the worker station and the apparatus station, so that the worker and the apparatus alternately assemble the workpiece.

Abstract: Work is performed in cooperation in a common region by a plurality of apparatuses and a human being, and at this time, human resources are used effectively, and the work is performed efficiently. When components A, B and C are processed by three apparatuses a, b and c and one person in, in the first process, the component A is processed by the person m, and the components B and C are processed by the two apparatuses b and c. In the second process, the component B is processed by the person in, and the components A and C are processed by the two apparatuses a and c. In the third process, the component C is processed by the person m, and the components A and B are processed by the two apparatuses a and b. The timings at which the person m intervenes in the respective apparatuses are prevented from overlapping in this manner, by which the work is performed efficiently.

Abstract: A liquid droplet ejecting head of an aspect of the invention includes: a nozzle ejecting a liquid-droplet; a liquid flow path member in which a liquid is supplied toward the nozzle; a back-pressure generating unit applying back-pressure to the liquid in a liquid-flow-path toward the nozzle; a beam member joined together with or including the liquid flow path member, deforming to become concave in a liquid-droplet ejection direction, thereafter undergoing buckling reverse deformation to become convex in the ejection direction, and applying inertia to the liquid near the nozzle in the ejection direction, to cause the liquid near the nozzle to be ejected; an opening disposed on an opposite side of the liquid flow path member in the ejection direction and communicated with the atmosphere; a suction path whose suction opening is directed toward near the nozzle; and a negative-pressure generating unit generating negative-pressure in the suction path.

Abstract: There is provided a liquid droplet discharging device including: a liquid passage member provided with a liquid passage into which a liquid is supplied; plural nozzles provided for the liquid passage member and each discharging the liquid contained in the liquid passage; a holding member that holds both end portions of the liquid passage member; and a drive unit that drives at least one of the holding members, and deforms the liquid passage member from a concave state to a convex state in the liquid droplet discharge direction, imparts inertial force to the liquid, and discharges liquid droplets from the nozzles.

Abstract: To make the most of characteristics of a device and a person and allow efficient handling even if a workpiece to be handled is changed when the device and the person perform operations in a shared area. The device 6 and the person 7 perform an assembling operation of a component to be assembled 3 to a vehicle body 2. When the assembling operation is classified into operations such as ejection of the component, conveyance, positioning, and mounting/fastening, a pattern 1 in which all the operations are performed by the device 6, and patterns 2 to 4 in which part of the operations are performed by only the person 7 or by the person and the device in collaboration and the remaining operations are performed by the device 6 are preset, and the patterns are switched according to the type of the component to be assembled 3 so as to make the most of high power of the device 6 and good judgment of the person 7 even if the type of the component to be assembled 3 is changed.

Abstract: An apparatus 30 for coupling a first member 15 and a second member 17 by a clip and a screw is constituted by member moving means 131L, 131R for moving the second member 17 relative to the first member 15, reaction force detecting means 132L, 132R provided to the member moving means 131L, 131R for detecting a press reaction force generated when the second member 17 is matched to the first member 15, clip fitting determining means 135L, 135R for determining whether the clip is correctly fitted to a clip hole by reading the reaction force detected by the reaction force detecting means 132L, 132R, and screw fastening means 149 for fastening the screw when acceptable information is provided by the clip fitting determining means 135L, 135R.

Abstract: To suppress adhesive extrusion in an ink flow path and irregularities or air bubbles (void) in the adhesive layer, thus enabling to improve reliability and yield as well as reduce the production cost. An ink jet printing head comprising a plurality of substrates having a hole or groove which are attached to one another via an adhesive layer, wherein thickness of adhesive is adjusted according to a thinner substrate as a reference of two substrates to be attached to each other in such a way that the thickness of the adhesive becomes thinner as the reference substrate becomes thinner and thicker as the reference substrate becomes thicker.

Abstract: An ink jet head is constructed by a plurality of combined units, wherein each of said units comprises a plurality of abutting portions and at least one recessed portion shaped to engage at least one of the abutting portions formed on another unit, and wherein at least a first of the units includes a first protruded abutting portion and at least a second one of the units includes a second protruded abutting portion, said first and second protruded portions abutting against each other.

Abstract: In an ink jet recording head including a silicon substrate and at least one ink chamber and at least one ink pool, which are formed in the silicon substrate with a partition wall therebetween, an opening portion is formed in a position corresponding to an apex of the ink pool of one surface of the silicon substrate on which an opening portion for etching the ink chamber is formed and anisotropic etching of the silicon substrate through the opening portion is performed such that an etching from a bottom of the ink pool and the etching from the opening portion are connected to each other immediately below the opening portion to absorb deviation between etching patterns on both surfaces of the silicon substrate to thereby reduce a variation of thickness of the partition wall and to reduce an influence of such deviation on an ink filling function and an ink jetting function of the ink jet recording head.

Abstract: In an ink jet recording head having a crystalline substrate in which at least one nozzle and at least one ink chamber formed in the crystalline substrate, a gap is provided in a connecting portion between the nozzle and the ink chamber below an opening portion of the nozzle such that a variation of the ink jetting function due to an axial deviation between the nozzle and the ink chamber is restricted by absorbing the axial deviation by the gap. The gap is formed such that extension lines of wall surfaces of the ink chamber formed by etching are positioned inside the gap.

Abstract: In an ink jet head including a substrate having a opening for a pressure chamber, a section of the opening is gradually increased from a front surface of the substrate to an intermediate level of the substrate and is gradually decreased from the intermediate level of the substrate to a back surface of the substrate. The opening at the front surface of the substrate serves as a nozzle.

Abstract: A portion of an ink jet recording head, which is formed by silicon material of a silicon substrate, is used as nozzles, ink chambers and a portion of an ink supply passage for supplying ink to the ink chambers and the remaining ink supply passage is formed of other material than the silicon material and connected to the portion of the ink jet recording head formed of the silicon material. A plurality of ink jet recording heads are formed as a unit block by a semiconductor fabrication process and cut out from a silicon substrate in block unit.

Abstract: Adhesive agent layers are respectively formed on top surfaces of a nozzle plate, a pool plate, a supply hole plate and a pressure chamber plate. A vibration plate and the four aforementioned plates including the adhesive agent layers are stuck together. When an adhesive agent is applied to each of the four aforementioned plates, the adhesive agent with high viscosity is applied to the circumference of the hole, and an adhesive agent layer with low viscosity is applied to a region which is other than the circumference of the hole.

Abstract: Any air trapped in a connection portion between adjacent ones of flow passage plates of an ink jet recording head in manufacturing the head.

Abstract: Nozzles for jetting ink droplets and ink chambers connected to the respective nozzles are formed in a substrate. Ink filling the ink chambers is pressurized. Ink pools are also formed adjacent to the ink chambers through partition walls, for supplying ink to the ink chambers. The partition wall makes a predetermined angle with respect to a surface of the substrate. The ink pools are formed adjacent to the ink chambers through thin partition walls. Further, the nozzles are arranged in a line and row matrix and the line of nozzles or the side of ink pools makes a constant angle with respect to a printing direction.

Abstract: An ink jet head is constructed by a plurality of combined units.

Abstract: A nozzle plate structure for an ink-jet printing head includes an annular projection formed around an opening edge of a nozzle that discharges ink. The annular projection has one or a plurality of notches in a circumference thereof. A method of manufacturing the nozzle plate is also disclosed.