摘要:
According to one embodiment, a droplet dispensing apparatus includes a droplet ejection array having a plurality of nozzles from which droplets can be ejected into a well opening of a microplate plate on a baseplate, a sensor configured to detect a liquid amount in the microplate, and a controller configured to detect that a nozzle in the plurality of nozzles is not discharging during a droplet ejection process based on an initial liquid amount in the microplate as detected by the sensor and a final liquid amount in the microplate as detected by the sensor during a droplet ejection process in which a predetermined number of droplets are to be ejected from the plurality of nozzles into the microplate.
摘要:
A liquid discharging head includes a discharge port that discharges a liquid, a pressure chamber that communicates with the discharge port, and an energy generating element that is disposed in the pressure chamber. In the liquid discharging head, the discharge port is provided with a plurality of projections that project towards a central portion of the discharge port from an inner peripheral edge of the discharge port, and an interval between the projections at a location where the projections are closest to each other is 5 μm or less.
摘要:
A liquid ejection head includes: an ejection port through which liquid is ejected; a liquid chamber which is connected to the ejection port, the liquid chamber being filled with the liquid; a pressurization device which is arranged on a wall of the liquid chamber, the pressurization device pressurizing the liquid in the liquid chamber; and a movable member which has a free end on a side of the ejection port and a fixed end on a side opposite to the ejection port, the free end being arranged at a prescribed distance from the wall of the liquid chamber so as to face the wall of the liquid chamber, the movable member including a first layer that is an internal layer, and second and third layers that are respectively arranged on both surfaces of the first layer, the second and third layers having a stress lower than the first layer.
摘要:
A liquid ejection head includes: an ejection port through which liquid is ejected; a liquid chamber which is connected to the ejection port, the liquid chamber being filled with the liquid; a pressurization device which is arranged on a wall of the liquid chamber, the pressurization device pressurizing the liquid in the liquid chamber; and a movable member which has a free end on a side of the ejection port and a fixed end on a side opposite to the ejection port, the free end being arranged at a prescribed distance from the wall of the liquid chamber so as to face the wall of the liquid chamber, the movable member including a first layer that is an internal layer, and second and third layers that are respectively arranged on both surfaces of the first layer, the second and third layers having a stress lower than the first layer.
摘要:
A liquid ejection head includes therein a movable member, wherein the movable member is formed of lamination of at least three layers, at least one layer thereof having a free edge part covered with another layer.
摘要:
The present invention provides a printing head, an ink jet printing apparatus, and an ink jet printing method capable of achieving high-speed printing while realizing high-quality image. An ejection port face where an ejection port of the printing head is located is formed so that the normal line thereof intersects with an axis line of a nozzle at a predetermined angle. The ejection port face inclines in a relative moving direction of the printing head with a printing medium as a reference.
摘要:
An ink jet printhead includes a substrate that defines a plurality of ink inlets. A drive circuitry layer is positioned on the substrate. A plurality of nozzle arrangements is arranged on the substrate. Each nozzle arrangement includes a nozzle chamber structure positioned on the substrate and defining a nozzle chamber in fluid communication with a respective ink inlet, and an ink ejection port in fluid communication with the nozzle chamber. An actuator is connected to the drive circuitry layer and is displaceable with respect to the substrate on receipt of an electrical signal from the drive circuitry layer. An ink ejection member is operatively positioned with respect to the nozzle chamber and is displaceable when the actuator is displaced such that ink is ejected from the ink ejection port. The ink ejection member is configured so that the ink ejection member obstructs a flow of ink from the nozzle chamber into the inlet at a certain position in a displacement path of the ink ejection member.
摘要:
In the prior art, ejection openings are formed of different materials having respective wettability levels Thus, ink may disadvantageously be drawn toward a more wettable material and ejected obliquely. Further, if ejection is carried out with a horizontally dripping liquid adhering to ejection opening edges and an edge of a roof plate forming a part of each ejection opening, the ink droplets may disadvantageously be ejected obliquely to the direction in which they are originally ejected. According to the present invention, the ejection openings are formed of the same material to prevent the ejecting direction from being affected by the difference in wettability. Further, a resin is raised from the ejection opening portion to prevent the horizontally dripping liquid adhering to an ejection opening periphery from contacting ejected ink droplets during ejection. As a result, the ejected ink droplets are not affected by the horizontally dripping liquid during ejection.
摘要:
A Liquid ejecting method for ejecting liquid using a bubble, includes using a liquid ejecting head having an ejection outlet for ejecting the liquid, a bubble generating region where a bubble is generated in the liquid, a movable member which is disposed faced to the bubble generating region, and which is displaceable between a first position and a second position farther from the bubble generating region than the first position and which has a free end at a downstream side thereof; displacing the movable member from the first position to the second position by pressure based on generation of the bubble in the bubble generating region, wherein the bubble expands more to the downstream side than to the upstream side with respect to a direction toward the ejection outlet by the displacement of the movable member, thus directing the bubble toward the ejection outlet to eject the liquid through the ejection outlet; and imparting an operation to the liquid ejecting head to normalize a state of the liquid in a liquid flow path for the liquid at least before liquid ejection start or at the time of non-ejection of the liquid.
摘要:
To provide a liquid discharge head, a liquid discharge apparatus, a valve protection method of the liquid discharge head, and a maintenance device. The liquid discharge apparatus provided with: a discharge port for discharging liquid, a liquid flow path communicating with the discharge port having a bubble generating region for generating bubble, a discharge energy generating element for generating thermal energy for generating the bubble in the liquid inside the bubble generating region, and a liquid discharge head facing the discharge energy generating element spaced apart from the discharge energy generating element having a movable member in which an end portion at an upstream side in a flow direction of the liquid inside the liquid flow path is fixed and a downstream end thereof is a free end, in which ink is discharged from the liquid discharge head and a recording is performed by adhering the liquid on a medium to be recorded, includes: a unit for detecting an ink supply state inside the liquid flow path, and a unit for controlling or stopping the driving to the discharge energy generating element when a judgment is made that the ink is not normally supplied based on the detection result of the ink supply state inside the liquid flow path.