66 results about "Ejection time" patented technology

The image forming apparatus comprises: a recording head which includes a plurality of nozzles through which droplets of liquid are ejected to and deposited on a recording medium to form dots on the recording medium, the nozzles being arranged in a nozzle row; a conveyance device which causes the recording head and the recording medium to move relatively to each other by conveying at least one of the recording head and the recording medium in a relative movement direction; a storage device which, of information indicating an amount of deposition position displacement from an ideal deposition position of the dots formed by the droplets ejected from the nozzles, stores information about the amount of deposition position displacement in at least a direction perpendicular to the relative movement direction of the conveyance device; a line figure recognition processing device which carries out processing for recognizing line figures from image data for printing; an ideal line identification device which determines an ideal line obtained by linking centers of the respective dots formed when printing a line figure, assuming that there is absolutely no deposition position displacement produced by any of the nozzles, in respect of the line figure recognized by the line figure recognition processing device; and an ejection timing control device which, when printing a line figure, controls ejection timing of a defective nozzle which produces deposition position displacement in a direction perpendicular to the relative movement direction, according to the information about the amount of deposition position displacement stored in the storage device and the ideal line determined by the ideal line identification device, in such a manner that a deposition center position of a dot formed by a droplet ejected from the defective nozzle moves closer to the ideal line, along the relative movement direction.

A system and method of mass spectrometry is provided. Ions from an ion source are stored in a first ion storage device and in a second ion storage device. Ions are ejected from the first ion storage device to a first mass analysis device during a first ejection time period, for analysis during a first analysis time period. Ions are ejected from the second ion storage device to a second mass analysis device during a second ejection time period. The ion storage devices are connected in series such that an ion transport aperture of the first ion storage device is in communication with an ion transport aperture of the second ion storage device. The first analysis time period and the second ejection time period at least partly overlap.

The invention relates to a method for controlling feeding fuel to the inlet pipe of hydrogen motor and relative device, which can apply variable combustion engine with hydrogen fuel and it can apply electric control on the hydrogen ejection time and ejection period. The invention comprises a group of sensors to supply the information of hydrogen feeding system and the motor; a group of valves and pipeline to supply hydrogen resource; a electric control unit as the control center of said device; a hydrogen ejection system formed by a hydrogen stable-pressure rail, a hydrogen ejection valve, and hydrogen guide nozzle for guiding the hydrogen ejected from hydrogen ejection valve to nearest inlet valve; a electric air-saving gate on the inlet pipe of motor, a waste gas recycle valve between the inlet pipe and outlet pipe; and a hydrogen safety release valve on the crank box of motor. The invention ejects the hydrogen at the position which is nearest to the motor inlet valve into burning room, to reduce the backfire possibility of inlet pipe, reduce the discharge of NOx and control early-burning.

The image forming apparatus comprises: a recording head which ejects droplets of a liquid onto a recording medium; a droplet ejection control device which controls a droplet ejection timing of the recording head; and a conveyance device which relatively moves the recording medium and the recording head in a relative conveyance direction, wherein when the recording head performs ejection of a first droplet to form a first dot on the recording medium and then performs ejection of a second droplet to form a second dot overlapping with the first dot on the recording medium, the droplet ejection control device controls the droplet ejection timing of the recording head by taking a droplet diameter change time until a diameter of the first droplet deposited on a surface of the recording medium reaches D1b satisfying the following inequality as a droplet ejection time interval between the ejection of the first droplet and the ejection of the second droplet: D1b<2×Pt−D2a, where Pt is an interval between the first dot and the second dot on the surface of the recording medium, D2a is a diameter of the second droplet upon landing on the surface of the recording medium, and D1b is the diameter of the first droplet on the surface of the recording medium when the second droplet lands on the surface of the recording medium.

The liquid droplet ejection apparatus comprises: a plurality of ejection heads having an ejection surface in which nozzles for ejecting droplets of liquid towards an ejection receiving medium are arranged two-dimensionally; a conveying device which conveys at least one of the ejection heads and the ejection receiving medium in a fixed direction to cause relative movement of the ejection heads and the ejection receiving medium in a relative movement direction; and a droplet ejection control device which performs droplet ejection control whereby droplets of the liquid are ejected from the ejection heads towards the ejection receiving medium together with the relative movement caused by the conveying device, and a row of dots is formed by the droplets of the liquid landing on the ejection receiving medium in which at least some of the dots overlap in a main scanning direction substantially perpendicular to the relative movement direction, wherein when a position between nozzles at which a droplet ejection time difference between adjacent dots in the main scanning direction in one ejection head differs from a droplet ejection time difference between other adjacent dots is referred to as a specific time difference nozzle pair position in a corresponding ejection head, the ejection head is positioned so that the specific time difference nozzle pair position differs in the main scanning direction between at least two of the ejection heads.

In a method and apparatus for measuring the ejection fraction in a mammalian heart, the opening and closing of a heart valve is sensed with an implanted sensor, and a pre-ejection period is measured as a function of the sensed opening and closing of the heart valve. The ventricular ejection time also is measured, and the ejection fraction is determined as a function of the measured pre-ejection period and the ejection time.

An arteriosclerosis inspecting apparatus including an information obtaining device which obtains information that is related to a velocity at which a pulse wave propagates in a living subject, a blood-pressure measuring device which measures a blood pressure of the subject, a heart-rate measuring device which measures a heart rate of the subject, a pre-ejection-period measuring device which measures a pre-ejection period from a time of starting of contraction of the heart of the subject to a time of starting of ejection of blood from the heart, an ejection-time measuring device which measures an ejection time from the time of starting of ejection of blood from the heart to a time of ending of ejection of blood from the heart, and an arteriosclerosis-inspection-related-augmentation-index determining means for determining an arteriosclerosis-inspection-related augmentation index of the subject, based on the obtained pulse-wave-velocity-related information, the measured blood pressure, the measured heart rate, the measured pre-ejection period, and the measured ejection time, according to a predetermined relationship between (A) (a1) pulse-wave-velocity-related information, (a2) blood pressure, (a3) heart rate, (a4) pre-ejection period and (a5) ejection time, and (B) arteriosclerosis-inspection-related augmentation index.

A mass spectrometer includes a linear multipole electrode, an auxiliary electrode that applies a DC potential on the center axis of the linear multipole electrode, and a DC power supply that supplies a DC power to the auxiliary electrode. The DC potential slope formed on the center axis of the multipole electrode is changed according to the measuring condition. The ejection time of ions can be adjusted optimally by adjusting the potential slope so as to satisfy the measuring condition. If the ejection time of ions is shortened, confusion of different ion information items that might otherwise occur on a spectrum can be avoided. If the ejection time of ions is lengthened, detection limit exceeding can be avoided and ions can be measured efficiently, thereby highly efficient ion measurements are always assured.

The present disclosure refers to a heart stimulator comprising a stimulation control unit, a stimulation unit, an impedance measurement unit and an impedance evaluation unit. The stimulation control unit is operatively connected to the stimulation unit to control timing of stimulation pulses by said stimulation unit. The impedance measurement unit is configured to determine an impedance signal reflecting intracardiac impedance. The impedance evaluation unit is operatively connected to the impedance measurement unit and to the stimulation control unit and is configured to evaluate the impedance signal so as to determine an isovolumic contraction time, an isovolumic relaxation time, an ejection time and a filling time from said impedance signal. The stimulation control unit is further configured to control timing of stimulation pulses depending on a performance index.

In a method and apparatus for measuring the ejection fraction in a mammalian heart, the opening and closing of a heart valve is sensed with an implanted sensor, and a pre-ejection period is measured as a function of the sensed opening and closing of the heart valve. The ventricular ejection time also is measured, and the ejection fraction is determined as a function of the measured pre-ejection period and the ejection time.

A method for adjusting the flight path of an unguided projectile, which comprises the steps of: (a) Measuring the magnitude and direction of the jittering of a projectile launch tube, at an ejection time of a projectile from the launch tube; (b) Measuring a velocity deviation of the projectile from a nominal velocity; (c) Measuring an angular deviation of the sight of the launch tube, being equal to the angular deviation between a line coinciding with the direction of gravity and a line passing through the center of the launch tube and the center of the sight; (d) Determining a compensating impulse vector to be applied to the projectile during an initial flight path thereof based on the magnitude and direction of the jittering, velocity deviation and angular deviation; and (e) Applying the compensating impulse vector to the projectile by activating a flight correction unit, the thrust developed by the flight correction unit suitable for adjusting the flight path of the projectile by a magnitude and direction substantially equal to that of the compensating impulse vector.

A piezoelectric valve stably supplies gas even for a long gas ejection time, with a high responsivity to opening the valve, is provided. The piezoelectric valve, including a gas-pressure-chamber for receiving a compressed gas supplied from outside, a gas-discharge-channel through which the compressed gas is discharged from the gas-pressure-chamber, comprises: a valve body disposed in the gas-pressure-chamber and opens / closes the gas-discharge-channel; a piezoelectric element for producing a driving force to move the valve body as a displacement; a displacement-enlarging-mechanism for enlarging the displacement of the piezoelectric element to act on the valve body; and a driving unit having a signal-generating-unit for generating a signal comprising a pre-pulse and a main pulse and provides the signal generated by the signal-generating-unit to a driving circuit as an input signal to apply a driving voltage to the piezoelectric element to make the piezoelectric element expand and drive the valve body open.

The invention discloses a controllable two-stage-ejection vehicle-mounted control system of an unmanned aerial vehicle (UAV). The controllable two-stage-ejection vehicle-mounted control system comprises an ejection frame, an ejection vehicle, an ejection sliding rail, a controllable two-stage-ejection drive mechanism, a controllable two-stage-ejection vehicle-mounted control mechanism, an automatic opening frame and a UAV lock frame mechanism. The invention also discloses a control method of the controllable two-stage-ejection vehicle-mounted control system of the UAV. The control method comprises the steps of respectively generating high-pressure gas and low-pressure gas by an air compressor, sending the high-pressure gas and the low-pressure gas to a high-pressure gas container and a low-pressure gas container, activating first-stage movement of the ejection frame by the controllable two-stage-ejection vehicle-mounted control system while sending a time instruction for activating second-stage movement of the ejection frame to an ejection time relay and a time instruction for releasing an ejection lock fastener, and activating the second-stage movement of the ejection frame and releasing the ejection lock fastener by the ejection time relay. The controllable two-stage-ejection vehicle-mounted control system of the UAV realizes the reduction of initial ejection acceleration, soas to furthest avoid the problem of excessive initial overload during the ejection process and to meet the requirements of enough off-frame speed at the same time.

A printing system includes a host computer and a printer. The host computer generates pixel group data for a plurality of pixel groups as print data. The pixel group data is generated in a time series by processing pixel groups aligned in a paper conveying direction within an image foaming range. This data provides information for driving specific nozzles in each print head. The pixel group data also identifies non-ejection times indicating the number of times in the pixel group that ink droplets are not ejected from nozzles in succession. By considering the non-ejection times identified in this pixel group data to be “information for driving the nozzles,” the printer itself need not count nor identify the number of non-ejection times, but can drive the nozzles with drive waveforms corresponding to the number of non-ejection times.