摘要:
A fluid jet system for producing at least one jet drop stream includes a print head having a fluid receiving reservoir and an orifice plate provided with orifices communicating with the reservoir in such a manner that fluid supplied to the reservoir under pressure emerges from the orifices as fluid filaments. A transducer responsive to a drive signal applies vibrational energy to the orifice plate for stimulating breakup of the fluid fliaments into streams of drops of substantially uniform size and spacing. A drive circuit applies a substantially sinusoidal drive signal to the transducer for stimulating such breakup. Cleaning of the print head is accomplished by applying to the transducer a pulse train including harmonics of the sinusoidal stimulation drive signal.
摘要:
There is provided a method for cleaning a liquid ejecting head including a nozzle plate in which a nozzle configured to eject a liquid is formed, a pressure chamber communicating with the nozzle, a vibration plate that defines a part of the pressure chamber, and a piezoelectric element that is laminated on the vibration plate, the method including: an ultrasonic cleaning step of ultrasonically vibrating a cleaning liquid in a cleaning tank by an ultrasonic vibrator in a state where the nozzle is immersed in the cleaning liquid in the cleaning tank and in a state where a gas is present in the pressure chamber.
摘要:
A method for cleaning nozzle surfaces of an inkjet print head assembly includes using a cleaning slide to carry out a movement along the assembly and clean the nozzle surfaces with a cleaning liquid in ultrasonic vibration. The cleaning slide includes an ultrasonic cleaning device, a suction device, and a rinsing device and the movement of the cleaning slide includes a forward movement and a backward movement. During the forward movement, the ultrasonic cleaning device and the suction device following the ultrasonic cleaning device are activated while the rinsing device following the two is deactivated. During the backward movement, the rinsing device and the suction device following the rinsing device are activated while the ultrasonic cleaning device following the two is deactivated. Cleaning liquid and contamination are advantageously prevented from reaching the interior of print heads or into an ink supply system thereof, preferably in industrial inkjet printing.
摘要:
A controller of a liquid ejection device obtains a temperature of a head after recording and before a pre-cap flushing and determines a pre-cap flushing voltage based on the temperature. Then, the controller outputs the pre-cap flushing voltage to the head in the pre-cap flushing process.
摘要:
A method to activate a printing element of an inkjet printer can include determining print data that indicates the usable print image to be printed with image point(s). The image point(s) are arranged at matrix point(s) of a print matrix. The method can also include determining virtual refresh data that indicates a virtual refresh image with refresh dots positioned at the matrix points based on a random algorithm, and activating the first printing element based on the virtual refresh data and the print data for the first column of the print matrix. The first printing element can be activated at a matrix point of the first column with: an ejection waveform to eject an ink droplet if the print data indicates an image point; and a vibration waveform to vibrate an ink meniscus of the first printing element without ink ejection if the virtual refresh data indicates a refresh dot.
摘要:
A cleaning apparatus includes a contact unit that includes a container in which an opening is formed, the container accommodating cleaning liquid that cleans a forming surface of an ejection unit, the forming surface on which an ejection opening is formed, the ejection opening from which a liquid droplet is ejected; and an ultrasonic vibrator that is provided at the container and vibrates the cleaning liquid accommodated in the container, wherein the contact unit brings the cleaning liquid into contact with the forming surface in a state where the opening of the container faces the forming surface.
摘要:
The object is to reliably remove dirt and/or stains on the nozzle surface of a printer head. To accomplish the object, an inkjet printing device (100) is provided with a rotating brush (50) in a cap (103) mounted on a printer head (1), and a piezoelectric element (150) disposed on the side wall of the cap (103). The piezoelectric element (150) is ultrasonically vibrated at a predetermined frequency by means of a controller (20) and a power source (9). The ultrasonic vibration is transmitted into a cleaning solution in the cap (103) to remove dirt and/or stains adhered to a nozzle surface (3a). The rotating brush (50) is rotated by a motor, and its bristles (53) are vibrated by the ultrasonic vibration. Accordingly, dirt and/or stains on the nozzle surface (3a) are mechanically removed.
摘要:
The object is to reliably remove dirt and/or stains on the nozzle surface of a printer head. To accomplish the object, an inkjet printing device (100) is provided with a rotating brush (50) in a cap (103) mounted on a printer head (1), and a piezoelectric element (150) disposed on the side wall of the cap (103). The piezoelectric element (150) is ultrasonically vibrated at a predetermined frequency by means of a controller (20) and a power source (9). The ultrasonic vibration is transmitted into a cleaning solution in the cap (103) to remove dirt and/or stains adhered to a nozzle surface (3a). The rotating brush (50) is rotated by a motor, and its bristles (53) are vibrated by the ultrasonic vibration. Accordingly, dirt and/or stains on the nozzle surface (3a) are mechanically removed.
摘要:
A liquid ejecting apparatus includes a pressure generation unit that causes a liquid to be ejected from a nozzle opening that communicates with a flow channel and a liquid holding unit that supplies a liquid to the flow channel, and the pressure generation unit performs microvibration driving when the liquid holding unit is replaced.
摘要:
A method is for controlling a droplet discharge device including at least a droplet discharge head having a plurality of nozzles for discharging droplets of a functional liquid, a plurality of drive elements provided corresponding to each of the nozzles, and a vibrating plate which is vibrated by the drive elements to discharge the functional liquid from the nozzles; and a flushing unit in which the vibrating plate undergoes microvibration when the droplet discharge head is in a standby period. The method for controlling a droplet discharge device includes selecting one of a plurality of predetermined microvibration control programs for causing the vibrating plate to undergo microvibration in accordance with information relating to the functional liquid, and controlling the drive elements to cause the vibrating plate to undergo microvibration when the droplet discharge head is in the standby period in accordance with the selected microvibration control program.