摘要:
A liquid discharging method is provided with heat generating elements (2) for creating air bubbles for discharging liquid, discharge ports (18) arranged corresponding to the heat generating elements, first liquid flow paths (14) conductively connected with the discharge ports, second liquid flow paths (16) arranged corresponding to the heat generating elements, and a separation wall to separate the first and second liquid flow paths. This separation wall is provided with the free end, which is caused to be displaced to the first liquid flow side by pressure exerted by air bubbles created by the heat generating elements, thus leading the pressure toward the discharge port side for discharging liquid from the discharge ports. For this liquid discharging method, liquids are supplied to the second liquid flow paths and to the first liquid flow paths from different sides, respectively, in order to stabilize the flow of liquid for the enhancement of the discharging efficiency and power, while reducing the influence of cavitation with respect to the heat generating elements to make the life thereof longer.
摘要:
A liquid discharge method for discharging a liquid through a discharge port (1) for discharging the liquid utilizing a bubble (6) by displacing a movable separation film (5) for always substantially separating a first liquid flow path (3) in communication with said discharge port (1) for discharging the liquid from a second liquid flow path (4) comprising a bubble-generating region for generating the bubble (6) in said liquid, on the upstream side of said discharge port with respect to flow of the liquid in said first liquid flow path (3), comprises a step of displacing a downstream portion of said movable separation film (5) toward said discharge port (1) relatively more than an upstream portion of said movable separation film (5) with respect to a direction of the flow of the liquid.
摘要:
A liquid discharge head comprises a grooved member (50) including plural discharge ports for discharging liquid, plural grooves for respectively constituting first liquid paths (14) directly communicating with the discharge ports, and a recess for constituting a first common liquid chamber communicating with the plural grooves and serving to supply the first liquid paths with liquid, plural element substrates, each including plural heat generating members for generating bubble in the liquid by giving heat thereto and walls of second liquid paths (16) corresponding to each the heat generating members, and arranged along the direction of array of the discharge ports of the grooved member, and a partition wall positioned between the element substrates and the grooved member, and including, in positions respectively opposed to the heat generating members, plural movable members (31) adapted to respectively displace toward the first liquid paths by the pressure of generation of the bubble.
摘要:
The present invention provides a liquid discharging head comprising a discharge port for discharging liquid, a bubble generating area (11) for generating a bubble in the liquid, a movable member (31) disposed in a confronting relation to the bubble generating area and displaceable between a first position and a second position more spaced apart from the bubble generating area than the first position, and side members integrally formed with at least parts of the movable member on its both sides and shiftable together with the movable member and adapted to cover sides of a bubble generated, and wherein the movable member is shifted from the first position to the second position by pressure due to generation of the bubble in the bubble generating area, and the bubble is more expanded downstream than upstream of a direction toward the discharge port by the displacement of the movable member. The present invention further provides a head cartridge having such a liquid discharging head and a liquid discharging apparatus having such a liquid discharging head.
摘要:
This specification discloses a liquid discharging method of discharging liquid from a discharge port by the use of a liquid discharging head having a flow path communicating with the discharge port (3), and a discharge energy generating element (5) provided in the flow path for causing energy for discharging the liquid to act on the liquid, having the step of driving the discharge energy generating element to thereby discharge the liquid from the discharge port, and the step of displacing the free end of the movable member (9) of a fluid element having an air bubble producing area disposed upstream of the discharge energy generating element in the flow path for producing an air bubble, and a movable member (9) provided in facing relationship with the air bubble producing area and provided with a fulcrum and a free end, by producing an air bubble in the air bubble producing area. The specification also discloses a liquid discharging head for carrying out such liquid discharging method. The specification further discloses a liquid discharging head cartridge having such liquid discharging head and a liquid container holding therein the liquid to be supplied to the liquid discharging head. The specification furthermore discloses an ink jet recording apparatus having such liquid discharging head and means for conveying a recording medium receiving the ink discharged from the liquid discharging head.
摘要:
A liquid ejection method includes preparing a head comprising an ejection outlet (18) for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member (31) disposed faced to the bubble generation region (11) and displaceable between a first position and a second position further from the bubble generation region (11) than the first position; displacing the movable member (31) from the first position to the second position by pressure produced by the generation of the bubble in the bubble generating portion (11) to permit expansion of the bubble more in a downstream side closer to the ejection outlet (18) than in an upstream side; supplying, to a heat generating element (2) for applying thermal energy to the bubble generating region (11), a driving pulse divided into a first pulse and an adjacent second pulse with interval time therebetween; pre-heating the liquid by the first pulse to an extent not enough to eject the liquid through the ejection outlet; generating a bubble by heating the liquid by the second pulse to eject the liquid through the ejection outlet (18); controlling a degree of pre-heating of the liquid by changing at least one of a pulse width of the first pulse or the interval time.
摘要:
The present invention provides a liquid discharging method in which communication between a bubble and atmosphere out of a discharge opening (18) is optimized while improving liquid discharging efficiency, a liquid discharge amount or a liquid discharging speed, a liquid discharging head for carrying out such a method, and a recording apparatus using such liquid discharging head. A discharging method for discharging liquid by communicating a bubble formed and grown in the liquid with atmosphere at an area of a discharge opening, according to the present invention, comprising the step of causing displacement of a movable member (31) having a free end for guiding the bubble toward the discharge opening while regulating the growth of the bubble, in accordance with the growth of the bubble.
摘要:
A micromachine comprises at least one heat generating unit (1a,1b,1c) arranged on the surface of a substrate (1), means for retaining liquid having a liquid retaining portion along the heat generating unit, a rotator (3) rotatively supported in the liquid retaining portion of means for retaining liquid. This rotator is structured to rotate by means of the boiling of liquid in the liquid retaining portion by heat generated by the heat generating unit (1a,1b,1c). The micromachine, such a micropump or a micromotor, is incorporated in a liquid jet recording head to cause recording liquid to flow compulsorily in order to remove accumulated bubbles in the liquid paths for the maintenance of good performance of the liquid jet recording head at all times.
摘要:
The present invention provides a liquid discharging method in which communication between a bubble and atmosphere out of a discharge opening is optimized while improving liquid discharging efficiency, a liquid discharge amount or a liquid discharging speed, a liquid discharging head for carrying out such a method, and a recording apparatus using such liquid discharging head. A discharging method for discharging liquid by communicating a bubble formed and grown in the liquid with atmosphere at an area of a discharge opening, according to the present invention, comprising the step of causing displacement of a movable member having a free end for guiding the bubble toward the discharge opening while regulating the growth of the bubble, in accordance with the growth of the bubble.