摘要:
To suppress an increase in the pressure of an ink reservoir caused by the ink reversely flowed from an ink cavity without causing a lead wire to be damaged or to get fatigued. A thin portion 13 which becomes resiliently deformed by the ink reversely flowed from an ink cavity 2 is provided in the area of a compliance plate facing an ink reservoir 4.
摘要:
An ink jet type recording head is capable of preventing the occurrence of cracks in a portion close to the circumferential wall of the pressure generating chamber of the piezoelectric active section so as to enhance the durability of the recording head.The ink jet type recording head includes a piezoelectric vibrator having a vibrating plate composing a portion of a pressure generating chamber communicated with a nozzle opening, the upper surface of the vibrating plate functioning as a lower electrode, the piezoelectric vibrator also having a piezoelectric active section composed of a piezoelectric layer formed on the surface of the vibrating plate and also composed of an upper electrode formed on the surface of the piezoelectric layer, the piezoelectric active section being formed in a region opposed to the pressure generating chamber, wherein the vibration regulating section is composed of a wide width section in which the piezoelectric layer is wider than the primary portion of the piezoelectric active section, and the wide width section is extended to a side wall and arranged on one end side of the pressure generating chamber in the longitudinal direction.
摘要:
A liquid ejecting head includes: a nozzle plate provided with nozzle openings; an actuator unit including a flow channel formation substrate in which pressure generation chambers are provided and piezoelectric actuators that cause a change in the pressure of the liquid within respective pressure generation chambers; a communication substrate in which communication channels that communicate between the pressure generation chambers and corresponding nozzle openings are provided; a first case member that is a frame member affixed to the communication substrate so that the actuator unit is disposed within the first case member and that, along with the actuator unit, forms a manifold that holds the liquid to be supplied to the pressure generation chambers; and a second case member that is affixed to the first case member and in which is formed an introduction channel that sends the liquid from the exterior to the manifold.
摘要:
A liquid ejecting head includes a plurality of pressure generators each including a first electrode individually provided therefor, the first electrode being located on a face of the flow path plate so as to correspond to one of the pressure chambers, a piezoelectric layer provided on the first electrode, and a second electrode provided on the piezoelectric layer; a lead electrode electrically connected to the first electrode; and a conductive layer provided in a section where the first electrode is partially exposed, the section being located in a region where the second electrode is not provided and the piezoelectric layer is exposed, at least a part of the conductive layer being in contact with the first electrode. The lead electrode is connected to the first electrode via the conductive layer.
摘要:
A liquid ejecting head which includes a flow passage forming substrate that has pressure generating chambers which communicate with nozzles capable of ejecting a liquid, pressure generating elements which apply pressure to the pressure generating chambers in order to eject the liquid from the nozzles, lead electrodes that supply electric signals to the pressure generating elements, wiring substrates that supply the electric signals to the lead electrodes, and a supporting member that supports the wiring substrates so as to raise the wiring substrates from a surface of the liquid ejecting head having the lead electrodes provided thereon.
摘要:
The first and second cables overlap with each other while at an attitude where the wiring terminal formation surfaces face the same side, and the one-end-side common wiring terminal is located on the outside of the arrangement direction of the wiring terminals of the group of the one-end-side individual electrode wirings. The one end portions of the first and second cables are bent in the same direction so that the wiring terminals respectively face element terminals of piezoelectric elements, and the wiring terminals are respectively bonded to the corresponding element terminals.
摘要:
A method for manufacturing a liquid jet head is provided which includes a flow channel board having at least pressure-generating chambers communicating with nozzle holes and a pressure generator above one surface that applies pressure for jetting liquid to the pressure-generating chambers, and a silicon single-crystal reservoir board having at least a reservoir section that communicates with the pressure-generating chambers and that is defined by a through hole passing through the reservoir board and a step with a riser formed so as to open up the through hole at one surface. In the method, a mask pattern having an opening is formed on a reservoir-forming board intended for the reservoir board. The opening has a correction pattern on its wall and a dummy mask pattern is formed in the opening. The correction pattern serves to expose a predetermined crystal plane of the reservoir-firming board to define the riser of the step. The dummy mask pattern has a plurality of separate mask portions and serves to substantially match the etching rate of the reservoir-forming board in the region opposing the correction pattern with the etching rate of the reservoir-forming board in the region opposing the opening of the mask pattern. The reservoir-forming board is anisotropically etched through the mask pattern having the correction pattern and the dummy mask pattern, so that the reservoir section having the step is formed.
摘要:
There is provided a liquid ejecting head unit that includes a liquid ejecting head ejecting liquid by driving a pressure generating element. The liquid ejecting head unit includes: the liquid ejecting head that includes first wiring substrates each having a connection wiring electrically connected to the pressure generating element and a support member that supports at least two first wiring substrates in different positions; a second wiring substrate that is commonly connected to the connection wirings of a plurality of the first wiring substrates electrically; and a head substrate to which the second wiring substrate is electrically connected. A connection portion connected to the head substrate is aligned on one face side of the second wiring substrate.
摘要:
A liquid ejecting head is provided which ejects liquid from nozzle openings by driving pressure generating elements, and includes: at least two rows of lead electrodes that supply an electrical signal to the pressure generating elements; and at least two wiring boards for supplying the electrical signal to the lead electrodes, wherein: the wiring boards respectively have individual wires which are electrically connected to the pressure generating elements, respectively, via the lead electrodes, and common wires which are electrically connected in common to a plurality of pressure generating elements via the lead electrodes; and, the wiring boards are formed such that a spacing between the respective common wires of the two opposing wiring boards is narrower than a spacing between the respective individual wires of the two opposing wiring boards.
摘要:
A liquid ejection head includes a flow channel-forming substrate having a plurality of pressure-generating chambers communicated with nozzles configured to eject droplets, the plurality of pressure-generating chambers being arranged in parallel with each other; a plurality of pressure-applying units configured to apply pressure to interiors of the pressure-generating chambers; and a joining substrate joined onto one surface of the flow channel-forming substrate. The flow channel-forming substrate includes a silicon single crystal substrate having a (110) plane orientation and has a side surface extending in a longitudinal direction of the pressure-generating chambers, the side surface being composed of a first (111) plane perpendicular to a (110) plane. The joining substrate includes a silicon single crystal substrate having a (110) plane orientation and is joined onto the flow channel-forming substrate so that a first (111) plane of the joining substrate perpendicular to the (110) plane intersects the first (111) plane of the flow channel-forming substrate.