摘要:
An inkjet head includes a head chip and an ink chamber. The head chip has a nozzle substrate provided with nozzles which discharge ink. The ink chamber is located over the head chip. In the ink chamber, the ink to be supplied to the nozzles is stored. The inkjet head is mounted on a mounting member. Between the nozzle substrate and the ink chamber, the inkjet head has a position reference substrate provided with butting parts. The butting parts are butted against the mounting member to position the inkjet head when the inkjet head is mounted on the mounting member.
摘要:
The liquid ejection head includes: a wall member having formed therein a void for communicating between a first liquid chamber and a second liquid chamber; a first energy generation element to eject the liquid in the first liquid chamber; a second energy generation element to eject the liquid in the second liquid chamber; a first electrode is arranged in a vicinity of the first energy generation element in the first liquid chamber; a second electrode for forming, between the first electrode and the second electrode, an electric field in liquid inside the first liquid chamber; and a supply port which supplies liquid to the first energy generation element, wherein the wall member includes a channel wall in which the second liquid chamber, the void, and the supply port communicate, and the second electrode is arranged between the second liquid chamber and the supply port in the channel.
摘要:
Provided is a thermo-pneumatic actuator which can include a substrate, an insulating layer formed on the substrate, a working fluid disposed in a fluid chamber, an ink chamber separated from the fluid chamber by at least a portion of the device layer comprising an actuatable membrane, and a heating element formed between the insulating layer and the fluid chamber. A boiling point temperature of the working fluid in the fluid chamber is in the range of greater than about 100° C. to about 500° C.
摘要:
An ink jet printhead including a thermo-pneumatic actuator array for ejecting ink from an array of nozzles. The actuator array may include a plurality of channels in fluid communication with a plurality of working fluid chambers. After completing formation of the actuator array, working fluid may be injected into a working fluid inlet on an exterior of the actuator array and into the plurality of working fluid chambers through the plurality of channels.
摘要:
A thermal bubble jetting device including a substrate. A superoleophobic, textured surface is positioned on the substrate. The textured surface comprises one or more gaps configured for holding a gas. A receptacle is positioned in fluid communication with the textured surface. Both an inlet and nozzle are in fluid communication with the receptacle. The device includes a heater mechanism configured to expand a gas in the one or more gaps so as to sufficiently increase pressure in the receptacle to force liquid through the nozzle.
摘要:
It is an object of this invention to provide a print head which can stably eject ink droplets of large volume without being influenced by negative pressure variations in an ink supply source or by drive conditions. To this end the ink jet print head of this invention includes a plurality of nozzle openings to eject ink, a plurality of liquid paths communicating with these nozzle openings, and energy generation portion to eject ink supplied to each liquid path from each nozzle opening in the form of an ink droplet. In a part of each liquid path, a dividing portion to divide the liquid path into a plurality of paths is installed inward of the nozzle opening.
摘要:
An ink jetting apparatus includes a nozzle module, a driving module, and a membrane. The nozzle module includes an ink chamber for reserving ink, and a nozzle hole for permitting ink in the ink chamber to be jetted therethrough. The driving module includes a working fluid chamber charged with working fluid, a heater disposed in the working fluid chamber, and a plurality of fins fixed to the heater, which are heated by the heater. By pressure from a bubble produced during the heating of the working fluid chamber by the heater, the membrane is curved into the ink chamber, and ink in the ink chamber is jetted through the nozzle hole. Since the bubble is divided by a plurality of fins on the heater, the bubbles disappear rapidly when the heater stops heating. Accordingly, the high-speed operation of the ink jetting apparatus becomes possible, and the ink jetting apparatus is more stably driven.
摘要:
The present invention provides a method for manufacturing a liquid discharge head comprising a top plate including a plurality of ink discharge ports for discharging ink droplet, a plurality of first liquid passages for supplying ink in correspondence to the plurality of ink discharge ports and a common liquid chamber for supplying the ink to the first liquid passages, a liquid discharge head substrate obtained by forming second liquid passages arranged adjacent to the first liquid passages and including bubble generating areas on a substrate on which a plurality of heat generating elements for causing the ink discharge port to discharge the ink droplets and including drivers for driving the heat generating elements, and a movable diaphragm for completely isolating the first liquid passages and the second liquid passages from each other and displaceable by a bubble generated on the heat generating element, wherein the method comprises a movable diaphragm forming step for providing the movable diaphragm in such a manner that a portion for fixing the movable diaphragm is covered. The present invention further provides such a liquid discharge head and a liquid discharging apparatus having such a liquid discharge head.
摘要:
A liquid discharge head is provided which allows production of a recorded image of improved quality by controlling the speed of flow of a liquid and the distribution of the speed of flow in a flow path caused in consequence of contraction of bubbles thereby stabilizing the direction of satellites arising behind main drops of discharged liquid and, at the same time, decreasing the amount itself of the satellites. This liquid discharge head comprises a movable separation membrane capable of effecting separation between a first flow path communicating with a discharge port for discharging a liquid and a second flow path furnished with a bubble generating region for generating bubbles in the liquid by means of a heating element and a movable member opposed to the bubble generating region across the movable separation membrane and furnished in the direction of liquid discharge with a free end to guide the displacement of the movable separation membrane induced by the growth of the bubbles in the direction of the discharge port and regulate the shape of displacement of the movable separation membrane as well.
摘要:
For stabilizing the liquid discharge from the head such as in the ink jet recording the invention provides a liquid discharging head comprising a discharge liquid path communicating with a discharge opening for discharging a discharge liquid and adapted to flow the discharge liquid, a bubble generating liquid path including a bubble generating area for bubble generation and adapted to flow a bubble generating liquid and a movable separating membrane adapted for mutually and substantially separating the discharge liquid path and the bubble generating liquid path and having a recess, in a position corresponding to the bubble generating area, deviated so as to narrow the bubble generating liquid path, wherein the recess has substantially non-displacing corner portions and is adapted to displace, excluding the corner portions, by a bubble generated in the bubble generating area.