Abstract: A vehicle is provided with both a traction control system which reduces driving torque for driving wheels of the vehicle when the driving wheels slip, and an active suspension system which has a cylinder disposed between the vehicle body and each of the wheels of the vehicle and in which suspension properties can be changed by controlling feed and discharge of the hydraulic fluid to and from the cylinders. A control gain of the active suspension system is increased when the traction control system is operating.

Abstract: A suspension apparatus of an automotive vehicle controls a posture of the vehicle body by controlling supply and discharge of an operating liquid to and from a cylinder unit interposed at each of the wheels between a sprung weight and an unsprung weight. The pressure within a high-pressure line for supplying the operating liquid of a high pressure to the cylinder units is released to the reservoir tank at a faster speed when a trouble occurs which cannot normally perform a control of the posture of the vehicle body and at a slower speed when an ignition switch has been turned off.

Abstract: A printer which includes a position controller for moving a printing head to a predetermined initial position by driving a stepping motor during initial processing operation, and a current controller for supplying a second current to the stepping motor to spontaneously start the stepping motor. Since the stepping motor is driven by the second current which is smaller than a first current to be supplied during printing, the noise to be produced during the initial homing operation can be minimized.

Abstract: A vehicle suspension system has liquid pressure cylinder devices provided between the respective wheels and the vehicle body. Supply and discharge of hydraulic liquid to and from the liquid pressure cylinder devices is controlled according to the running condition of the vehicle. Each of the liquid pressure cylinder devices communicates with a pair of gas springs, each having a gas chamber and a liquid chamber parted from each other by a movable member. The liquid chamber communicates with the liquid pressure chamber of the liquid pressure cylinder device by way of a communicating passage, and the gas chamber is filled with gas. The initial pressure of one of the gas springs is higher than that of the other.

Abstract: A suspension system for a vehicle has cylinder devices in which suspension characteristics are changed by controlling fluid supply/discharge to/from the cylinder devices. The fluid pressure in the cylinder devices is sensed, and warping of the vehicle body is computed based on the sensed pressures. Then the fluid supply/discharge to/from the cylinder devices is controlled so as to suppress the warping of the vehicle body by a warp control unit. The warp control unit is provided so as to change the ratio of the fluid supply/discharge to/from the cylinder devices of the front wheels to the fluid supply/discharge to/from the cylinder devices of the rear wheels.

Abstract: A paper feeder for printers having front and back pin tractor assemblies disposed on opposite sides of a platen roller with respect to the paper feed route. Each tractor has a plurality of pins which are rotatable so as to convey the continuous paper. A reversible drive source is coupled to both the pin tractors. A clutch selectively decouples the drive source from the front pin tractors in accordance with the rotational direction of the drive source. A switch mechanism independent of the clutch also selectively decouples the front pin tractor from the drive source. The described structure allows paper stack to be automatically removed from between the tractors.

Abstract: Among two damping devices arranged in series between wheel side members and body side members, while in one damping device spring constant of a spring member is set low and damping coefficient of a damper member is set high, in the other damping device spring constant of a spring member is set high and damping coefficient of a damper member is set low. By this arrangement, difference in damping force between the area of low oscillation frequency and the area of high oscillation frequency can be made large, whereby running stability and comfortableness to ride in can be improved on a high level.

Abstract: A vehicle suspension system of the disclosure is provided with a cylinder device between a vehicle body member and a vehicle wheel member for the vehicle body member by which suspension characteristics are changed. The suspension characteristics are changed by controlling hydraulic fluid supply for the cylinder device, a vehicle height detecting device for detecting a vehicle height displacement, a vehicle height change rate detecting device for detecting a change rate of the vehicle height displacement, and a control device for receiving signals from both the vehicle height displacement detecting device and the vehicle height change rate detecting device to control the hydraulic fluid supply for the cylinder device.

Abstract: A vehicle suspension system includes a cylinder device, provided between a vehicle body member and a vehicle wheel member for the vehicle body member, in which suspension characteristics are changed by controlling hydraulic fluid supply for the cylinder device. A vehicle height displacement detecting device detects a vehicle height displacement, and a vehicle height control device receives a signal from the vehicle height displacement detecting device to control the hydraulic fluid supply for the cylinder device to thereby obtain a target vehicle height displacement in accordance with a height control sensitivity. A sensitivity change device changes the height control sensitivity in accordance with a predetermined condition so as to change the supply of the hydraulic fluid for the cylinder device. A warp control cooperate and a height control are optimized.

Abstract: A printing system prints characters or figures on a label removably adhered to a backing web on a platen roller. Separating rollers are disposed on the downstream side of the platen roller. A backing web with labels fed out from the platen roller after printing is bent by the separating rollers. The backing web bent by the separating rollers is drawn out from the separating rollers by a backing web feeding mechanism. When the backing web is bent by the separating rollers and drawn out from the separating rollers by the backing web feeding mechanism, a label is peeled off from the backing web to which it has been adhered. The separating rollers and the backing web feeding mechanism are coupled in an integral relation to constitute a label separating device. The label separating device is removably supported on a body of the print system.

Abstract: A suspension apparatus of a vehicle has a cylinder unit interposed between a sprang weight and an unsprung weight, which changes a ride height of the vehicle body by supplying or discharging an operating liquid through a supply/discharge control valve. The supply/discharge control valve is controlled on the basis of a predetermined condition so as to control a posture of the vehicle body. There are further provided a rebound detecting means for detecting a rebound of each of the wheels and a pressure detecting means for detecting a pressure in the cylinder unit. When the rebound is detected by the rebound detecting sensor to be above a given value, if the pressure detected by the pressure detecting means is continued at a magnitude above a given value for a given period of time, it is judged that the supply/discharge control valve is in trouble.

Abstract: A suspension apparatus of a vehicle has a cylinder unit interposed between a sprang weight and an unsprung weight, which changes a ride height of the vehicle body by supplying or discharging an operating liquid through a supply/discharge control valve. The supply/discharge control value is controlled on the basis of a predetermined condition so as to control a posture of the vehicle body. There are further provided a bump detecting sensor for detecting a bump of each of the wheels, which occurs further from a state in which the wheel is bumped, and a pressure detecting sensor for detecting a pressure in the cylinder unit. When it is sensed by the bump detecting sensor that the bump occurs further from the bumping state, if the pressure detected by the pressure detecting sensor is continued in a lowering state for a given period of time, it is judged that the supply/discharge control valve is in trouble.

Abstract: A suspension apparatus of a vehicle has a cylinder unit interposed between a sprang weight and an unsprung weight, which changes a ride height of the vehicle body by supplying or discharging an operating liquid through a supply/discharge control valve. The supply/discharge control value is controlled on the basis of a predetermined condition so as to control a posture of the vehicle body. There are further provided a bump detecting means for detecting a bump of each of the wheels and a pressure detecting means for detecting a pressure in the cylinder unit. When the bump is detected by the bump detecting sensor to be below a given value, if the pressure detected by the pressure detecting means is continued at a magnitude above a given value for a given period of time, it is judged that the supply/discharge control valve is in trouble.

Abstract: A suspension system for a vehicle has cylinder devices, in which suspension characteristics are changed by controlling fluid supply or discharge to or from the cylinder devices. In the suspension system, after sensing a vehicle height displacement, the fluid supply or discharge to or from the cylinder devices is controlled so as to set the vehicle height displacement to a desired value in a vehicle height displacement control. Also, the fluid pressure in the cylinder, devices is sensed, and a warping of the vehicle body is computed, based on sensed pressures. Then, fluid supply or discharge to or from the cylinder devices is controlled so as to suppress the warping of the vehicle body in a warp control. According to predetermined conditions, a warp gain coefficient in a warp control unit is changed, so that the vehicle height displacement control and the warp control are performed optimally.

Abstract: A vehicle suspension system includes a cylinder device provided between a vehicle body member and a vehicle wheel member for the vehicle body member in which suspension characteristics are changed by controlling a hydraulic fluid supply for the cylinder device. A pressure detector detects a hydraulic pressure of the cylinder device for each of the vehicle wheel members, and a warp control unit computes a warping of vehicle body so as to control a hydraulic fluid supply for the cylinder device in a manner such that the warp of the vehicle body is suppressed.

Abstract: A suspension-steering control apparatus is provided with suspension-characteristic changing means for changing a suspension characteristic and a rear-wheel steering mechanism for steering rear wheels of a vehicle. The suspension characteristics is such that, for example, a magnitude of a damping force of a suspension or a rolling rigidity ratio of the rear portion of the vehicle body to the front portion thereof can be changed. The rear-wheel steering mechanism is controlled on the basis of a predetermined steering characteristic. The steering-characteristic is corrected in synchronization with alteration of the suspension characteristic.

Abstract: A hydropneumatic suspension system for a vehicle has a hydraulic cylinder-piston device connected between the vehicle body and each of the wheels, and a plurality of gas springs which exert a spring force according to the hydraulic pressure in the hydraulic chamber of the cylinder-piston device. Each gas spring has a fluid chamber and a gas chamber which are defined in a casing and are separated from each other by a movable partition wall, and the fluid chamber is communicated with the hydraulic chamber of the hydraulic cylinder-piston device. The upper end portion of the piston rod is supported by the vehicle body by way of a mount. The piston rod is provided with a fluid passage which axially extends through the piston rod and the lower end of which opens to the hydraulic chamber of the cylinder-piston device. A support member is fixed to the piston rod at an upper portion below the mount.

Abstract: The suspension system has a cylinder unit disposed at each wheel for displacing a vehicle height of the vehicle body by a supply or a discharge of operating liquid and a vehicle height sensor disposed at each wheel for sensing the vehicle height of the body. An actual status amount of the posture of the body, such as a pitch amount or a roll amount, is determined on the basis of output from the vehicle height sensor, thereby controlling the supply or discharge of the operating liquid to or from the cylinder unit in order to allow the actual posture amount to reach a given target value. When the running status is detected to such an extent that changes the status amount, the target value can be corrected in anticipation prior to a change in the posture status amount, thereby preventing the change in the posture status amount.

Abstract: A vehicle suspension system includes a liquid piston-cylinder device connected between the vehicle body and a wheel. A liquid pump is provided in a liquid passage which connects the liquid piston-cylinder device to a reservoir in which hydraulic liquid is reserved, and feeds under pressure the hydraulic liquid in the reservoir through the liquid passage. A control valve controls the flow of the hydraulic liquid through the liquid passage, thereby controlling feed and discharge of the hydraulic liquid to and from the liquid piston-cylinder device in order to control the properties of the suspension. An accumulator is connected to the liquid passage between the liquid pump and the control valve and accumulates the hydraulic liquid under pressure. A return passage connects the reservoir to the liquid passage between the liquid pump and the control valve and is provided with an on-off valve which opens and closes the return passage.

Abstract: A vehicle suspension system has fluid cylinders connected between the vehicle body and the respective wheels. A fluid control system controls feed and discharge of hydraulic fluid to and from the fluid cylinders and changes the suspension properties of the suspension system. A failure in the fluid control system is detected and when the control system fails, one of first to third measure modes is taken on the basis of the kind of the failure. Warning is just given and the control of feed and discharge of hydraulic fluid to and from the fluid cylinders being continued when the first measure mode is taken, the control of feed and discharge of hydraulic fluid to and from the fluid cylinders is interrupted with the chassis height fixed to the present height when the second measure mode is taken, and the fluid in the fluid cylinders is discharged and the chassis height is lowered when the third measure mode is taken.