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 package includes a packaging member; and an ink container which contains ink comprising pigment coloring material and solvent dispersing the coloring material and which has an ink supply port for permitting supply of the ink to an outside, wherein the ink container is mountable to an ink jet recording apparatus with the ink supply port at a lower position, the ink container accommodating an ink absorbing material for absorbing the ink and being provided with an air vent which is open for fluid communication between a space inside the ink container and ambience, and wherein a region tending to have a high coloring material density in the ink container is at a position generally diagonally opposite the ink supply port, wherein the ink container is in a first orientation which is different from a second orientation taken in use in the ink jet recording apparatus.

Abstract: A liquid jet recording method includes applying thermal energy to liquid in a liquid passage to produce film boiling of the liquid to produce a. bubble; permitting the bubble to communicate with ambience; wherein the liquid passage is not blocked in the communicating step.

Abstract: A substrate for use of an ink jet head that constitutes an ink jet head includes a plurality of discharge ports for discharging liquid, a plurality of liquid flow paths communicated with the plurality of discharge ports, and first and second heat generating device arranged serially in the liquid flow paths in the flow path direction of the liquid flow paths for generating thermal energy which is utilized for discharging liquid in the liquid flow paths from the discharge ports, the first and second heat generating device being formed on the substrate.

Abstract: An ink cartridge (3) including an ink reservoir portion having a porous member (37) for storing ink and an ink supply portion (39) has an ink inducing element (47) disposed between the ink reservoir portion and the ink supply portion (39). The ink inducing element (47) is made of bundle of fibers in which each fiber is disposed in parallel to the direction of ink supplying from the ink reservoir to the ink supply portion (39), and one end of the ink inducing element (47) is press-touched to the porous member (37).

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: An ink cartridge (3) including an ink reservoir portion having a porous member (37) for storing ink and an ink supply portion (39) has an ink inducing element (47) disposed between the ink reservoir portion and the ink supply portion (39). The ink inducing element (47) is made of bundle of fibers in which each fiber is disposed in parallel to the direction of ink supplying from the ink reservoir to the ink supply portion (39), and one end of the ink inducing element (47) is press-touched to the porous member (37).

Abstract: A liquid ejecting head is provided comprising a member provided with a plurality of ejecting outlets which eject liquid; a substrate having a plurality of bubble generating means which generates thermal energy for generating and growing a bubble which ejects the liquid, the bubble generating means opposing the associated liquid ejecting outlet; a plurality of liquid flow paths each of which communicates with the associated ejecting outlet and has a bubble generating region for generating the bubble in the liquid by the thermal energy; a common liquid supply chamber which communicates with the plurality of said liquid flow paths via a liquid supply inlet and which supplies liquid to the plurality of said liquid flow paths via the liquid supply inlet, the liquid supply inlet being a long through-hole formed in the substrate; and a plurality of movable members disposed in the longitudinal direction of the liquid supply inlet so as to cover the liquid supply inlet, each of the movable members having a free end in

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: 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: An ink jet recording head comprising an element base having a plurality of energy generating elements for generating energy used for discharging ink, a grooved top plate having a plurality of grooves corresponding to the plurality of energy generating elements, being joined to the element base, and having a plurality of ink flow channels formed by the plurality of grooves on a joint area side to the element base, an orifice plate having a plurality of orifices having communication with the plurality of ink flow channels respectively and being mounted on the grooved top plate integrally, and a chip tank having supply passages for supplying ink to the plurality of ink flow channels.

Abstract: An ink jet recording head comprising a plurality of discharge ports for discharging ink droplets, a plurality of ink flow paths communicated with the respective discharge ports, a common liquid chamber communicated with said ink flow paths and adapted to hold ink to be introduced into said ink flow paths, electro-thermal converting portions disposed in said ink flow paths and adapted to generate heat for bubbling the ink, and bubble trapping portions disposed at communicating portion between said ink flow paths and said common liquid chamber.

Abstract: An ink jet recording head in which a flat plate section has a recess section in its surface and an orifice plate having a plurality of openings grouped and disposed for ejecting a liquid is placed in the recess section, with the flat plate section being cleaned by a cleaning member movable perpendicularly to a direction of the disposition of the ejecting openings in a state brought into contact with a surface of the flat plate section. The recess section includes a combined curved surface made in a manner that a first curved surface having a first curvature and a second curved surface having a second curvature smaller than the first curvature are combined at a position corresponding to the deepest portion of the recess section. At this time, the first curved surface is located on the upstream side of the second curved surface in a cleaning direction of the cleaning member, and the combined curved surface extends in the disposition direction of said ejecting openings.

Abstract: A liquid injecting recording head is constructed by a first substrate in which a discharging energy generating element for generating discharging energy for discharging a recording liquid is formed, and a second substrate which has a liquid flow path groove forming a liquid flow path by joining this liquid flow path groove to the first substrate, a concave portion communicated with the liquid flow path groove and forming a common liquid chamber for temporarily holding the recording liquid, and an orifice plate communicated with the liquid flow path groove and having a discharging port for discharging the recording liquid. The liquid injecting recording head is constructed by joining the first and second substrates to each other in a form in which the discharging energy generating element and the liquid flow path groove correspond to each other.

Abstract: An ink cartridge (3) including an ink reservoir portion having a porous member (37) for storing ink and an ink supply portion (39) has an ink inducing element (47) disposed between the ink reservoir portion and the ink supply portion (39). The ink inducing element (47) is made of bundle of fibers in which each fiber is disposed in parallel to the direction of ink supplying from the ink reservoir to the ink supply portion (39), and one end of the ink inducing element (47) is press-touched to the porous member (37).

Abstract: A first gap formation member and a fixed portion are provided on an element substrate, a movable member is formed on the first gap formation member and the fixing member, and a second gap formation member is formed thereon. The first gap formation member is removed, a wall material is coated and exposed at a pattern mask. The wall material is patterned to form the liquid flow path walls and the liquid supply ports altogether, and removing the second gap formation member, hence making it easier to form the side stopper that supports the movable member stably in a state where the displacement of the movable member is regulated to close the liquid supply port, as well as the minute gap between the movable member and the side stopper in higher precision.