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 liquid ejecting head suppresses erosion of silicon substrates by liquid, and whereby suppresses leakage of liquid, discharging failure of liquid droplets, and peeling-off of laminated substrates. The liquid ejecting head includes at least a nozzle plate on which nozzle openings for discharging liquid are provided, and a flow path formation substrate on which a pressure generation chamber communicating with the nozzle openings is provided. The nozzle plate is formed with a silicon substrate. At least the flow path formation substrate and the nozzle plate are bonded to each other after providing a tantalum oxide film formed by atomic layer deposition on the entire surfaces including a bonded surface.

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 liquid ejecting head suppresses erosion of silicon substrates by liquid, and whereby suppresses leakage of liquid, discharging failure of liquid droplets, and peeling-off of laminated substrates. The liquid ejecting head includes at least a nozzle plate on which nozzle openings for discharging liquid are provided, and a flow path formation substrate on which a pressure generation chamber communicating with the nozzle openings is provided. The nozzle plate is formed with a silicon substrate. At least the flow path formation substrate and the nozzle plate are bonded to each other after providing a tantalum oxide film formed by atomic layer deposition on the entire surfaces including a bonded surface.

Abstract: A system for controlling damping force characteristics for respective shock absorbers of a vehicle in which each shock absorber is installed between sprung mass and unsprung mass at each tire wheel position, a front tire wheel side sprung mass vertical velocity and a front tire wheel side relative velocity between the sprung mass and unsprung mass are determined, the damping force characteristics of the shock absorbers located at the front tire wheels side are basically controlled on the basis of the control signal determined on the basis of the front tire wheel side sprung mass vertical velocity, and the damping force characteristics of the shock absorbers located at the rear tire wheels side are, on the other hand, controlled on the basis of the control signal determined on the basis of a front tire wheel side road surface input velocity determined on the basis of the front tire wheel side sprung mass vertical velocity and the front tire wheel side relative velocity determined from a front tire wheel side r

Abstract: An arrangement of a vehicular suspension system is disclosed in which each drive circuit which outputs a drive current to a corresponding one of the actuators installed on each shock absorber is arranged at a position adjacent to the corresponding one of actuators. Thus, transmission of signals from each drive circuit to the corresponding one of the actuators is unaffected by electrical disturbance. In addition, a length of a wire connected between the corresponding one of the actuators and the drive circuit can be shortened. The generation of noises causing the electromagnetic wave interference can be prevented. In another preferred embodiment, a printed circuit board containing each drive circuit is mounted in a casing of the corresponding one of the actuators of the shock absorbers.

Abstract: A suspension control system for an automotive vehicle is provided which utilizes variable damping force shock absorbers for modifying damping force characteristics. Each of the shock absorbers has an electric motor adapted for varying an effective fluid flow restriction established by an orifice when modifying the damping force characteristics. When the electric motor is energized to initialize an angular position thereof upon starting the suspension control, operating torque of the motor is decreased below a preselected level for reducing reaction force from a stopper when an output shaft of the motor is urged into engagement with the stopper arranged at an original angular position of the motor.

Abstract: A control system for a damping force coefficient of a shock absorber for a vehicle suspension provides a controller for correcting the position of a step motor. The controller sets the step motor at a predetermined position in a manner to intermittently move the step motor to a stop position restricted by a stopper and to reversely rotate it by a predetermined number of steps. Therefore, the step motor is precisely set at a home position without using a position detector.

Abstract: A hydraulic damper is disclosed which has a contraction phase one-way passage way which allows a flow of damping fluid in contraction phase, an extension phase one-way passage way which allows a flow of damping fluid in extension phase, and a valve element in the form of a hollow control rod. The valve element has a neutral position in which both of the contraction phase and extension phase one-way passage ways are open, a first displaced position in which the extension phase one-way passage way is restricted with the contraction phase one-way passage way left open, and a second displaced position in which the contraction phase one-way passage way is restricted with said extension phase one-way passage way left open.

Abstract: A strut for a vehicle suspension includes a strut mount insulator including a rod mount bracket, and a shock absorber including a rod mounted to said rod mount bracket. The rod has a longitudinal axis and a sensor mount surface radially extending with respect to the longitudinal axis. The strut further includes means for providing a positive motion connection between the rod mount bracket and the rod. The positive motion connection providing means includes a load sensor pre-loaded between said sensor mount surface of the rod and the rod mount bracket of the strut mount insulator. According to the present invention, the positive motion connection providing means includes a spacer disposed between the sensor mount surface and the rod mount bracket.

Abstract: A hydraulic damper comprises a reciprocal piston in a cylinder containing a hydraulic fluid, a piston rod including a reduced diameter valve sleeve fixedly received in a through bore of the piston, and a valve element disposed in the valve sleeve for relative movement to the valve sleeve between a plurality of positions. The relative position of the valve element to the valve sleeve is adjustable via a control rod from the outside, such as by an actuator. The valve sleeve has an inlet port communicating with a first chamber on one side of the piston and an outlet port. The valve element has a transfer groove. The valve element covers the inlet port and is moveable to uncover the inlet port to allow fluid communication between the inlet port and the transfer groove that in turn communicates with the outlet port. A first increased damping force generating valve and a second decreased damping force generating valve are mounted to the piston.

Abstract: A microcomputer has an instruction memory and a high-speed sense amplifier and can selectively operate according to a high-speed operation mode and to a low-speed operation mode. The high-speed sense amplifier is activated in a full time or with a large duty rate in the high-speed operation mode and is activated with a short duty rate in the low-speed operation mode.

Abstract: A microcomputer having an instruction memory is provided with a high-speed sense amplifier which can selectively operate in either of a high-speed operation mode or a low-speed operation mode. The high-speed sense amplifier is activated full time or at a large duty rate in the high-speed operation mode and is activated at a low-duty rate in the low-speed operation mode. By operating at a low-duty rate in the low-speed mode, a considerable power savings is realized while retaining the high speed benefits of the sense amplifier, which may be in the form of a current mirror-type sense amplifier or the like.