Abstract: Memory provided in an ink cartridge attached to a printing apparatus includes: a storage section in which ink amount information about an amount of stored ink and threshold information about a threshold of the amount of the ink are stored; and a processing section that performs processing based on information received from the printing apparatus and information stored in the storage section, in which when receiving, from the printing apparatus, empty-ink information indicating that the ink cartridge is in an unusable state, the processing section performs comparing processing of comparing the ink amount information with the threshold information, when a result of the comparing processing satisfies a predetermined writing condition, the processing section writes the empty-ink information to the storage section, and when the result does not satisfy the writing condition, the processing section does not write the empty-ink information to the storage section.

Abstract: A memory includes: a first type storage area used in a one-time use period from when a liquid is filled into a cartridge to when consumption of the liquid is completed; and a second type storage area used in an entire use period of the cartridge, which is a set of one-time use periods, in which the first type storage area has a plurality of individual areas in which a different area is used in each one-time use period.

Abstract: Memory provided in an ink cartridge attached to a printing apparatus includes: a storage section in which ink amount information about an amount of stored ink and threshold information about a threshold of the amount of the ink are stored; and a processing section that performs processing based on information received from the printing apparatus and information stored in the storage section, in which when receiving, from the printing apparatus, empty-ink information indicating that the ink cartridge is in an unusable state, the processing section performs comparing processing of comparing the ink amount information with the threshold information, when a result of the comparing processing satisfies a predetermined writing condition, the processing section writes the empty-ink information to the storage section, and when the result does not satisfy the writing condition, the processing section does not write the empty-ink information to the storage section.

Abstract: A fluid pressure shock absorber includes a piston connected to an end of a piston rod and slidably moving inside a cylinder tube and dividing the cylinder tube into a piston-side chamber and a rod-side chamber, a rod internal space formed inside the piston rod, a first communication passage communicating the rod-side chamber with the rod internal space, a second communication passage formed in the piston and communicating the piston-side chamber with the rod internal space, and a restrictor provided in the second communication passage to apply a resistance to a flow of a working fluid passing through the second communication passage.

Abstract: A printing apparatus 10 calculates an consumed ink amount which is a consumed amount of ink ejected from an ejection unit that ejects ink supplied from an ink cartridge 60, and, in the case where an unused ink cartridge 60 is installed, executes initial maintenance of the ejection unit, determines an initial consumed ink amount which is a consumed amount of liquid consumed by the initial maintenance, writes the consumed ink amount and the initial consumed ink amount to a storage device 70 of the ink cartridge 60 as a consumed ink amount 73 and an initial consumed ink amount 75, and generates and notifies a ratio of the difference between the contained ink amount 71 and the consumed ink amount that is updated relative to the difference between the contained ink amount 71 and the initial consumed ink amount 75 as notification-use information.

Abstract: A damper control device controls a damping force of each damper interposed between a vehicle body and a corresponding one of a plurality of vehicle wheels of a vehicle. The damper control device includes: a good wavy road control calculation unit that obtains, for each damper, a good wavy road control instruction suitable for a good wavy road representing a wavy road surface; a bad wavy road control calculation unit that obtains, for each damper, a bad wavy road control instruction suitable for a bad wavy road that has more concavities and convexities than the good wavy road; and a final instruction calculation unit that obtains a final control instruction for each damper based on the good wavy road control instruction and on the bad wavy road control instruction.

Abstract: There is provided a suspension vibration information estimation device capable of accurately estimating suspension vibration information on a rear wheel side. The suspension vibration information estimation device obtains suspension vibration information on a rear wheel side of a vehicle based on rear wheel unsprung vibration information and rear wheel sprung vibration information, estimates the suspension vibration information in consideration of a vibration state of a vehicle body on the rear wheel side, and thus may accurately estimate the suspension vibration information on the rear wheel side.

Abstract: An object is to provide a signal processing device capable of reducing a sudden change in the rate of change of an output signal at the time of switching between two signals. In the signal processing device, when a signal of a larger value is selected, a smoothing signal is generated based on the deviation between two signals such that the smoothing signal has a value larger than the values of the two signals between two points at which the smoothing signal intersects the two signals, or when a signal of a smaller value is selected, the smoothing signal is generated based on the deviation between two signals such that the smoothing signal has a value smaller than the values of the two signals between two points at which the smoothing signal intersects the two signals.

Abstract: Provided is a damper control device that exerts appropriate damping force to improve ride quality in a vehicle even when the vehicle gets over a projection on a road surface, the damper control device including a correction unit that corrects the damping force of a damper based on information from which a temporal variation amount of a damper velocity of the damper can be grasped and level information from which a damping force characteristic level that is the magnitude of a damping force characteristic of the damper can be grasped. The damper control device can suppress occurrence of distortion in a characteristic of transmission damping force regardless of the magnitude of the damping force characteristic level, and does not cause a lack of the damping force by reducing the damping force more than necessary when the damping force characteristic level is small.

Abstract: A mono-tube type hydraulic shock absorber includes a cylinder, a free piston that partitions the inside of the cylinder into a liquid chamber in which a hydraulic fluid is filled and a gas chamber in which a gas is filled, a piston slidably inserted into the cylinder, the piston partitioning the liquid chamber into two working chambers, a sealing ring provided on an outer periphery of the free piston, the sealing ring being configured to seal between the cylinder and the free piston, and a lubricating oil enclosed within the gas chamber to lubricate between the sealing ring and the cylinder.

Abstract: [Object] To provide a suspension control apparatus, a suspension control method, and a program, by which unsprung vibrations or sprung vibrations of each wheel can be efficiently suppressed. [Solving Means] A suspension control apparatus (20) includes a signal generator (40) and a control unit (50). The signal generator (40) generates a first state signal regarding unsprung vibrations of a first wheel and a second state signal regarding unsprung vibrations of a second wheel. The control unit (50) generates, on the basis of the first and second state signals, a control signal for mutually and cooperatively controlling a first damper mounted on the first wheel and a second damper mounted on the second wheel.

Abstract: A signal processing apparatus (20) is a signal processing apparatus for a suspension control apparatus and includes a first determination unit (41). The first determination unit (41) is configured to select any one of a plurality of detection signals including information regarding unsprung vibrations of a first wheel, which are acquired from a plurality of sensors mounted on a vehicle, and determine unsprung vibrations of the first wheel on the basis of the selected one detection signal.

Abstract: A damper control device includes a speed conversion unit configured to convert a damper speed to a control damper speed, and if the damper is accelerating, the damper speed is converted so that signs of the control damper speed and the damper speed accord with each other and an absolute value of the control damper speed becomes an absolute value of the damper speed or more, and if the damper is decelerating, the damper speed is converted so that the signs of the control damper speed and the damper speed accord with each other and the absolute value of the control damper speed becomes the absolute value of the damper speed or less, and a damping force of the damper is controlled by using the control damper speed.

Abstract: A printing apparatus 10 calculates an consumed ink amount which is a consumed amount of ink ejected from an ejection unit that ejects ink supplied from an ink cartridge 60, and, in the case where an unused ink cartridge 60 is installed, executes initial maintenance of the ejection unit, determines an initial consumed ink amount which is a consumed amount of liquid consumed by the initial maintenance, writes the consumed ink amount and the initial consumed ink amount to a storage device 70 of the ink cartridge 60 as a consumed ink amount 73 and an initial consumed ink amount 75, and generates and notifies a ratio of the difference between the contained ink amount 71 and the consumed ink amount that is updated relative to the difference between the contained ink amount 71 and the initial consumed ink amount 75 as notification-use information.

Abstract: A signal level detection device 1 and a signal level detection method according to a means for solving a problem of the present invention varies a cut-off frequency ?c, of a variable low-pass filter 3 which filters a signal level r. The cut-off frequency ?c is varied based on the signal level r or information referred to for estimating the signal level. The signal level detection device 1 and the signal level detection method therefore reduce a delay of a rise of the obtained signal level r from an actual signal level, and sufficiently remove noise superimposed on the signal level r even when the signal level r is extremely low. Accordingly, control performance improves regardless of a degree of the signal level r.

Abstract: A damper speed calculation unit 42 reads a suspension displacement and performs a differential operation on it, to thereby calculate a damper speed. This differential operating characteristic includes a gain characteristic having a gradient larger than a gradient of a gain characteristic of an exact differential in an unsprung resonance frequency region. With this, the phase delay is suppressed and the control performance is enhanced.

Abstract: A damper control apparatus damps vibration of an unsprung member by controlling a damping force of a damper in a vehicle, the damper being interposed between a sprung member and the unsprung member. The damper control apparatus includes a vibration level detecting unit that detects a vibration level serving as a magnitude of the vibration of the unsprung member, and a stroke speed detecting unit that detects a stroke speed of the damper. The damper control apparatus further includes a command value calculating unit that determines a control command value, the control command value is a command value for controlling the damping force of the damper on the basis of the vibration level of the unsprung member and the stroke speed of the damper.

Abstract: A printing apparatus includes a cartridge, and a wiring cable which can transmit an electrical signal to the cartridge. The carriage is provided with a connector unit and a wiring board in a holder unit on which the cartridge is mounted. First and second electrode portions, and a connector unit are arranged on a first face of the wiring board. The wiring board is arranged at a position of being overlapped with the cartridge in a direction which goes along an arrow Y. A width of the wiring board in an arrow X direction is the same as a width of a cartridge arranging region in the holder unit, or is smaller than that.

Abstract: A damper control device controls vibration of an unsprung member by controlling a damping force of a damper interposed between a sprung member and the unsprung member of a vehicle on the basis of a damping property prepared in advance. The damper control device includes a correction unit that extracts a sprung resonant frequency component of a stroke velocity of the damper, and corrects a damping force target value of the damper on the basis of the extracted above-spring resonant frequency component.

Abstract: A damper control device includes a vibration level detection unit configured to detect a vibration level of the unsprung member, and a control unit configured to control the damping force characteristics of the damper by obtaining a control instruction, the control instruction determining the damping force characteristics on the basis of the vibration level detected by the vibration level detection unit.