Abstract: A liquid transporting apparatus which transports a liquid includes a channel unit having a surface which is electroconductive and a liquid channel which includes a pressure chamber; a piezoelectric actuator applying a pressure to the liquid in the pressure chamber and having a piezoelectric layer arranged to face the surface of the channel unit and to cover the pressure chamber, electrodes which are arranged in the piezoelectric layer to face the pressure chamber, and a first isolating film arranged between the piezoelectric layer and the surface of the channel unit to cover the pressure chamber; and a deterioration detecting mechanism detecting a deterioration of the first isolating film and having a second isolating film which is electroconductive and stacked on a surface, of the first isolating film, on a side of the piezoelectric layer, and which is insulated from both the electrodes and the channel unit.

Abstract: Even in the case where preliminary ejection is performed by a recording head having an array of pigment ink ejection outlets and an array of dye ink ejection outlets in which a length of the pigment ink ejection outlet array is longer than a length of the dye ink ejection outlet array, deposition of preliminarily ejected pigment ink at a preliminary ejection receiving portion is effectively prevented by providing an inclined surface at the preliminary ejection receiving portion so that ink from the dye ink ejection outlets is received at an upstream position of the inclined surface and ink from the pigment ink ejection outlets is received at a downstream position of the inclined surface in a direction of gravity.

Abstract: A liquid recording head for effecting recording by ejecting droplets from a plurality of ejection outlets formed on a substrate is provided. The liquid recording head includes a plurality of large droplet ejection outlets each having a relatively large ejection amount, a plurality of small droplet ejection outlets each having a relatively small ejection amount, energy generating elements for generating energy for ejecting the droplets from the plurality of large droplet ejection outlets and the plurality of small droplet ejection outlets, a liquid chamber for retaining liquid to be ejected from the plurality of large droplet ejection outlets or the plurality of small droplet ejection outlets, at least two first flow passages for establishing communication between the liquid chamber and one of the large droplet ejection outlets, and second flow passages for establishing communication between the liquid chamber and the small droplet ejection outlets.

Abstract: An ink-jet recording head includes a substrate which has a first surface, a second surface opposed to the first surface, and energy-generating elements arranged above the first surface and configured to generate energy used to discharge ink. The recording head also includes discharge ports through which the ink is discharged and arranged to correspond to the energy-generating elements, ink channels communicatively connected to the discharge ports, a supply port which extends from the first surface to the second surface of the substrate and which is communicatively connected to the ink channels, and a film extending over the wall of the supply port. The film further extends on the first surface of the substrate and is covered with a first layer extending from the first surface of the substrate.

Abstract: A liquid ejector including: a nozzle; a pressure chamber communicating, at one end thereof in a specific direction, with the nozzle; a liquid-store chamber; a restrictor through which the other end of the pressure chamber in the specific direction and the liquid-store chamber communicate with each other; and an actuator having a plurality of piezoelectric layers, a pair of electrode layers, and an active portion that is constituted by a portion of one of the plurality of piezoelectric layers, which portion is interposed between the pair of electrode layers, wherein the active portion is disposed at a position corresponding to the pressure chamber so as to extend in the specific direction, and has a shorter length than the pressure chamber in the specific direction, and wherein a center of the active portion in the specific direction is shifted toward the nozzle than a center of the pressure chamber in the specific direction.

Abstract: Embodiments of the present disclosure are disclosed.

Abstract: A piezoelectric actuator includes a vibration plate, a plurality of individual electrodes, wiring sections each extending from corresponding one of the individual electrodes and passing between the other individual electrodes other than the corresponding individual electrode, a piezoelectric layer arranged on the vibration plate to cover the individual electrodes, and a common electrode arranged on a surface of the piezoelectric layer disposed on a side opposite to the piezoelectric layer. At least portions of the plurality of wiring sections, each of which is allowed to pass between the another individual electrodes, are covered with a second insulating layer. Accordingly, it is possible to suppress the occurrence of the strain of the piezoelectric layer in the area between the individual electrodes through which the wiring section is allowed to pass, without providing any complicated shape of the common electrode in which the common electrode is partially cut out.

Abstract: The present invention provides an image forming apparatus including: a rotating body that holds recording medias on a circumferential surface; an image forming section that forms an image; a generating section that generates a pulse and a reference pulse; a measuring section that measures the number of pulses; a computing section that each time when predetermined number of pulses from generation of the reference pulse has been measured, divides a pulse width of a pulse before predetermined number of pulses by a first value to compute a pulse division time; and a controlling section that each time when predetermined number of pulses are measured from generation of the reference pulse, multiplies the pulse division time by a second predetermined value, thereby obtaining a forming start time, and that controls to start image formation when the forming start time has elapsed from the measurement of predetermined number of pulses.

Abstract: In a harmonica type head chip having a plurality of rows of channels (row A and row B), connection electrodes for row A and the connection electrodes for row B formed on the back surface of the head chip are connected to a multilayer member having an insulating layer on one surface of which are formed the lead wirings for row A and on the other surface of which are formed the lead wirings for row B, and the lead wirings for row B are made to protrude outwards more than the lead wirings for row A and drive interconnections are electrically connected to the lead wirings for row A and the lead wirings for row B.

Abstract: A liquid jet head includes a flow passage forming substrate formed of a crystal substrate provided with a pressure generating chamber communicating with nozzle openings, and a piezoelectric element including a lower electrode, a piezoelectric layer, and an upper electrode, which are provided on the flow passage forming substrate to change pressure in the pressure generating chamber. The piezoelectric layer has a thickness of 5 ?m or less and is formed of perovskite type crystals, and the distance between a diffraction peak position A of an X-ray derived from a surface (220) of the flow passage forming substrate and a diffraction peak position B of an X-ray derived from a surface (100) of the piezoelectric layer is within the range of 2?=25.487±0.1°.

Abstract: In an ink jet head manufacturing device, first and second diodes are arranged on a path extending from a gate of a control unit to an individual electrode of an ink-pressure control part in an ink jet head, the first diode allowing a current from the individual electrode of the ink-pressure control part to flow into a first wiring, and the second diode allowing a current from a second wiring to flow into the individual electrode of the ink-pressure control part. A short-circuit unit is arranged to short-circuit the first wiring and the second wiring when depolarization or polarization of the ink-pressure control part is performed.

Abstract: A droplet ejection device includes: a substrate having first, second, third & fourth pressure chambers extending in a first direction; a nozzle plate below the substrate & having first, second, third & fourth nozzle apertures continuous with first, second, third & forth pressure chambers, respectively; a vibration plate above the substrate; first, second, third & fourth piezoelectric elements above the vibration plate & above first, second, third & fourth pressure chambers.

Abstract: A liquid ejecting head includes a piezoelectric element in which a lower electrode, a piezoelectric layer, and an upper electrode are laminated in this order, and a flow path forming substrate in which the piezoelectric element is formed above one surface thereof and a pressure generating chamber being communicated with a nozzle opening is provided, in which the upper electrode is formed so as to extend over an upper surface of the piezoelectric layer and an upper portion of side faces of the piezoelectric layer, and a protective film is formed above portions of the piezoelectric layer, which are not covered by the upper electrode.

Abstract: A piezoelectric type inkjet printhead includes an upper substrate including a pressure chamber to be filled with ink that is to be ejected, a reservoir to store ink that flowed in from an ink container, a restrictor connect the reservoir to one end of the pressure chamber, an intermediate substrate comprising a damper formed on a portion of the intermediate substrate, which corresponds to other end of the pressure chamber, a lower substrate comprising a nozzle to eject ink and formed in a portion of the lower substrate, which corresponds to the damper, a hydrophobic layer formed on a bottom of the lower substrate, and a piezoelectric actuator formed on the upper substrate to supply driving power to eject ink to the pressure chamber, wherein the nozzle is formed in the lower substrate at a predetermined depth from a bottom surface of the lower substrate.

Abstract: An inkjet head has a first substrate having first groove portions formed on one surface of the first substrate and an ink supply path connected to the first groove portions and opening toward another surface of the first substrate. A second substrate has second groove portions and is connected to the first substrate so that the first and second groove portions jointly form ink chambers. First drive electrodes are formed on sidewalls of the first groove portions. Second drive electrodes are formed on sidewalls of the second groove portions. Conduction members are formed only adjacent to the ink supply path of the first substrate and electrically connect the respective first and second drive electrodes to one another.

Abstract: A liquid ejecting head includes: a flow passage forming substrate which is provided with a plurality of liquid passages each having a pressure generating chamber communicating with a nozzle opening for ejecting a liquid and a communication section communicating with the plurality of liquid passages; an elastic film which is formed on one surface of the flow passage forming substrate and has an opening in an area opposed to the communication section; a pressure generating unit which applies pressure to the inside of the pressure generating chambers; and a reservoir forming substrate which is adhered onto the surface of the flow passage forming substrate on a side of the pressure generating unit and is provided with a reservoir section communicating with the communication section to form a part of a reservoir.

Abstract: This invention provides a shear mode-type piezoelectric actuator using a piezoelectric ceramic composition free from lead having a high coercive electric field and a liquid ejection head having the shear mode-type piezoelectric actuator. The shear mode-type piezoelectric actuator is characterized by using a piezoelectric ceramic composition having a solid solution including a main component of general formula (1) and an auxiliary component of general formula (2) added in an amount of less than 1% by mole based on the total amount of the solid solution: {LiX(K1-YNaY)1-X}(Nb1-Z-WTaZSbW)O3??General formula (1) (Wherein 0?x?0.2, 0?y?1, 0<z?0.4, 0<w?0.2) ABO3??General formula (2) (Wherein A denotes Bi and B denotes at least one of Fe, In and Sc).

Abstract: A liquid ejection head which can fly a minute high viscosity droplet with high precision by a low drive voltage in electric field assist system which exhibiting excellent maintainability such as cleaning. The liquid ejection head (2) comprises a nozzle plate (4) provided with a nozzle (5) having a liquid supply opening (9) for supplying a liquid (L), an ejection opening (11) for ejecting the liquid (L), and a liquid supply passage for supplying the liquid (L) from liquid supply opening (9) to the liquid ejection opening (11), a cavity (20) for storing the liquid (L), a pressure generating means for generating pressure in the cavity (20), and an electrostatic voltage generating means for generating an electrostatic attraction between the liquid (L) and a substrate.

Abstract: The present invention comprises at least a reservoir tank which stores an ink supplied from an ink supply section, and an ink chamber which distributes and supplies the ink supplied from the reservoir tank to each recording head in a recording head group, wherein the reservoir tank maintains a predetermined negative pressure state with respect to the ink in a plurality of ink nozzles of each recording head through the ink chamber, and the ink chamber supplies the ink with an uniformed pressure loss in ink supply paths to each recording head in the recording head group.

Abstract: On the back surface of a head chip having a plurality of rows of channels (row A, row B), the connection electrodes for row A that are electrically connected to the drive electrodes of the channels of row A are arranged, a first connection electrodes for row B that are electrically connected to the drive electrodes of the channels of row B are arranged between the rows of channels of row A and the rows of channels of row B, and also, between neighboring connection electrodes for row A, a second connection electrodes for row B are separately placed from the first connection electrodes for row B, the first connection electrodes and the second connection electrodes are connected electrically by drawing out interconnections, and the drawing out interconnections are in contact only with the first connection electrodes, the second connection electrodes, and the back surface of the head chip.