Abstract: A liquid discharging method for a liquid discharge head having a plurality of discharge ports and a plurality of liquid flow paths communicated always with each of the discharge ports at one end, each having a bubble generating area, a bubble generating unit, a plurality of liquid supply ports, and a movable member supported with a minute gap to the liquid supply port on the liquid flow path side, and provided with a free end. The area of the movable member is surrounded at least by the free end portion and both sides continued therefrom are made larger than the opening area of the liquid supply port facing the liquid flow path. A period for the movable member is set to close and essentially cut off the opening area during the period from the application of the driving voltage to the bubble generating unit.

Abstract: A liquid discharging method which employs a liquid discharging head consisting of a liquid discharging port, a bubble generating region where the bubble generates in the liquid and a movable member that can move between a first position and a second position which is located at a point farther from the bubble generating region compared with the first position, wherein the movable member moves from the first position to the second position by the pressure of the bubble generated by the bubble generating energy in the bubble generating region, and at the same time the bubble expands farther toward the downstream direction compared with the upstream direction by the displacement of the movable member in order to discharge the liquid out of the liquid discharging port by the liquid discharging energy applied to such liquid.

Abstract: A liquid discharging head comprises a discharging port for discharging liquid, a liquid flow path communicated with said discharging port, a bubble generating region for causing the liquid to generate a bubble and a movable member having provided thereon a free end disposed facing to said bubble generating region, and on the downstream of said liquid flow path directed toward said discharging port. At least when said movable member is in stationary state, a side of said liquid flow path corresponding to said bubble generating region is substantially composed of all with a wall face and common communicating space for commonly communicating said liquid flow path with a neighboring liquid flow path is provided in the upward of a movable section of said movable member.

Abstract: A liquid discharging head includes a discharge port for discharging liquid, a liquid passage communicated with the discharge port, a bubble generating area for generating a bubble in the liquid in the liquid passage, the bubble generating area including a heater for heating the liquid in the liquid passage, and a movable member disposed in a confronting relation to the bubble generating area in the liquid passage and adapted to be shifted by pressure caused by generating the bubble at the bubble generating area to direct the pressure toward the discharge port and to be returned to its initial position by negative pressure due to contraction of the bubble, and wherein resistance of the movable member against the liquid in the liquid passage when it is shifted is smaller than that when it is returned.

Abstract: There is disclosed a liquid discharging method and apparatus in which a bubble is formed and grown in the liquid communicated with atmosphere at an area of a discharge opening, and in which a movable member having a free end which guides the bubble toward the discharge opening while regulating growth of the bubble.

Abstract: A liquid discharging head includes a discharge port and a liquid passage provided with bubble-generating means and a movable member. The liquid passage has one side which is closed, and one side which communicates with the discharge port and with a liquid supply port. The movable member has a free end on the closed side of the liquid passage and a fulcrum on the other side. The bubble-generating means is disposed on a wall of the liquid passage facing the free end of the movable member and facing a wall in which the liquid supply port is provided. The movable member is separated from the discharge port by a gap in the liquid passage corresponding to the bubble-generating means. The projected area of the movable member on the liquid supply port is larger than the opening area of the liquid supply port.

Abstract: A liquid ejecting method includes displacing a movable member having a free end by bubble generation in a bubble generating region; the improvement residing in: that a fulcrum of said movable member is disposed adjacent to one side of a displacement region where the free end of said movable member displaces, and an ejection outlet through which the liquid is ejected is disposed adjacent to the opposite side of the displacement region; that there is provided a first period in which a displacing speed of the free end of the movable member is higher than a growing speed of the bubble generated in the bubble generating region toward the movable member, before the bubble reaches its maximum size.

Abstract: A liquid discharge head comprises discharge ports for discharging the liquid, a bubble producing area for producing an air bubble in the liquid of liquid flow channels, and a movable member, which is disposed toward the bubble producing area, and displaceable between a first position and a second position farther away from the bubble producing area than the first position, the liquid discharge head discharging the liquid in such a manner that the movable member is displaced from the first position to the second position by a pressure due to a bubble produced in the bubble producing area, and the bubble is more greatly expanded downstream than upstream in a direction toward the discharge port, due to the displacement of the movable member. The head has a check valve disposed in a liquid supply passage leading to the liquid flow channels.

Abstract: There is disclosed a liquid discharge head comprises a discharge port for discharging a liquid, a liquid flow path with one end constantly communicating with the discharge port and with a bubble generating area for generating a bubble in the liquid, a liquid supply port disposed in the liquid flow path and connected to a common liquid supply chamber for storing the liquid to be supplied to the liquid flow path, a plurality of bubble generating means, disposed in the liquid flow path, for generating the bubble in the liquid, and a plate-like movable member disposed in the liquid flow path with the side of the discharge port supported as a free end at a gap of 10 &mgr;m or less with respect to the liquid supply port on the side of the liquid flow path, and provided with a projection area larger than an opening area of the liquid supply port.

Abstract: A liquid discharge head having a plurality of discharge ports to discharge a liquid, a plurality of liquid flow paths, in which an end part permanently communicates with the respective discharge ports, having a bubble generating area to generate a bubble in the liquid, bubble generating unit to generate energy to generate and grow the bubble, a plurality of liquid supply ports arranged in the plurality of liquid flow paths and communicating with a common liquid supply chamber, and a movable member, having a free end, supported with a very small gap by at least part of the liquid flow path side of the liquid supply port, the area surrounded by at least the free end part of the movable member and both side parts continuing thereto being larger than an opening area prepared in the liquid flow path of the liquid supply port, in which in a status of the movable member at rest, the part of the discharge port side of the movable member contacts with a member for forming the liquid supply port and a very small gap is

Abstract: A liquid ejecting method for ejecting liquid by generation of a bubble includes preparing a head comprising an ejection outlet for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member disposed faced to the bubble generation region and displaceable between a first position and a second position further from the bubble generation region than the first position; and displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble in the bubble generating portion to permit expansion of the bubble more in a downstream side nearer to the ejection outlet than in an upstream side.

Abstract: A liquid ejection head includes an ejection outlet for ejecting liquid; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther form the bubble generating region than the first position; a liquid supply passage for supplying the liquid to the bubble generating region from upstream of the bubble generating region; an opening, in fluid communication with the supply passage, for discharging the liquid.

Abstract: Disclosed herein is a set of water-based pigment inks for ink-jet, comprising a black pigment ink and other pigment inks different in hue from the black pigment ink, which the pigment inks each comprise water, a water-soluble organic solvent and an aqueous pigment dispersion, wherein respective polymeric dispersants used in the black pigment ink and the other pigment inks different in hue from the black pigment ink are different in polarity from each other.

Abstract: A liquid discharge method for discharging a liquid through a discharge port for discharging the liquid utilizing a bubble by displacing a movable separation film for always substantially separating a first liquid flow path in communication with said discharge port for discharging the liquid from a second liquid flow path comprising a bubble-generating region for generating the bubble in said liquid, on the upstream side of said discharge port with respect to flow of the liquid in said first liquid flow path, comprises a step of displacing a downstream portion of said movable separation film toward said discharge port relatively more than an upstream portion of said movable separation film with respect to a direction of the flow of the liquid.

Abstract: A liquid discharge head has a plurality of first liquid flow passages connected to outlets for discharging the discharge liquid, a plurality of second liquid flow passages having an element board with heating elements for generating a bubble in the bubbling liquid and corresponding to the first liquid flow passages, and movable separation films substantially and mutually separating the first liquid flow passages and the second liquid flow passages at all times, wherein the movable separation films are mutually independent individual separation films for each of the second liquid flow passages. It is possible to directly provide a flow passage wall configuring a side wall of a first liquid flow passage onto the element board by the low temperature junction by using surface activation since the movable separation films are individual separation films.

Abstract: The present invention provides a liquid discharging head comprising a substrate having a plurality of heat generating elements for generating a bubble in liquid and a grooved member having a plurality of grooves constituting a plurality of liquid passages and wherein the liquid passages for respective heat generating elements are formed by joining the grooved member to the substrate and further wherein the grooved member has an opening portion into which the substrate is inserted and the opening portion has the plurality of grooves which constitute the liquid passages for the respective heat generating elements when the substrate is inserted into the opening portion.

Abstract: A method produces a liquid ejecting head having an ejection outlet for ejecting a liquid, a heat generating element for applying thermal energy to the liquid, a liquid flow path having a first path portion in fluid communication with the ejection outlet and a second path portion disposed below the first path portion and provided with the heat generating element in a bottom surface thereof, a partition wall for partitioning the liquid flow path into the first path portion and second path portion, and a movable member disposed above the heat generating element in the portion wall and arranged as displaceable to a side of the first path portion in accordance with a bubble generated in the liquid by the thermal energy in which upon generation of the bubble the first path portion and the second path portion are in fluid communication with each other and the pressure is directed toward the ejection outlet by the movable member displaced to eject the liquid droplet.

Abstract: A method produces a liquid ejecting head having an ejection outlet for ejecting a liquid, a heat generating element for applying thermal energy to said liquid, a liquid flow path comprised of a first path portion in fluid communication with said ejection outlet and a second path portion disposed below said first path portion and provided with said heat generating element in a bottom surface thereof, a partition wall for partitioning said liquid flow path into said first path portion and second path portion, and a movable member disposed above said heat generating element in said portion wall and arranged as displaceable to a side of the first path portion in accordance with a bubble generated in the liquid by said thermal energy in which upon generation of said bubble the first path portion and the second path portion are in fluid communication with each other and said pressure is directed toward said ejection outlet by said movable member displaced to eject said liquid droplet.

Abstract: 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.

Abstract: A liquid discharge head comprises discharge ports for discharging the liquid, a bubble producing area for producing an air bubble in the liquid of liquid flow channels, and a movable member, which is disposed toward the bubble producing area, and displaceable between a first position and a second position farther away from the bubble producing area than the first position, the liquid discharge head discharging the liquid in such a manner that the movable member is displaced from the first position to the second position by a pressure due to a bubble produced in the bubble producing area, and the bubble is more greatly expanded downstream than upstream in a direction toward the discharge port, due to the displacement of the movable member. The head has a check valve disposed in a liquid supply passage leading to the liquid flow channels.