Abstract: A liquid ejection head cartridge includes a head portion for ejecting liquid; a liquid supply portion for supplying the liquid to the recording head portion; an air vent for fluid communication with ambience and a negative pressure producing member accommodating container accommodating a negative pressure producing member capable of retaining liquid therein; a liquid reservoir having a liquid reservoir portion for containing liquid and constituting a substantially sealed space except for a communication portion with the negative pressure producing member accommodating container; a container holder for holding the liquid reservoir and the negative pressure producing member accommodating container which are in fluid communication with each other through the communicating portion and having a liquid supply path to the recording head from a liquid supply portion of the negative pressure producing member accommodating container; wherein the recording head portion, the negative pressure producing member accommodati

Abstract: An ink absorbent is contained in the housing of an ink tank for storing ink in the interior thereof, which is provided with a supply port for leading out ink to the outside, and an atmospheric communication port to be communicated with the air outside, and the ink absorbent is formed by fiber material having the surface formed at least by thermoforming. For this ink absorbent, the face which faces the supply port on the inner face of the ink tank is a cut face. With the structure thus arranged, the ink absorbent is prepared to provide cut faces to make the fiber absorbent softer than the thermoformed surface. Then, with the deformability and resiliency of the ink absorbent itself thus obtained, the close contactness with the inner walls of the ink tank is enhanced to prevent not only the ink shortage and ink leakage due to the air pass, but also, prevent the ink absorbent from being deviated when installed.

Abstract: The invention is to connect a liquid container, having a fluid connecting portion and an information memory medium, to the main body of a recording apparatus without generating stress in both connecting portions.

Abstract: There is disclosed a liquid supply system comprises a negative pressure generating member containing chamber provided with a liquid supply portion for supply liquid to the outside and an atmosphere connecting portion for connecting with atmosphere for containing a negative pressure generating member holding the liquid inside, a liquid containing chamber connected to the negative pressure generating member containing chamber, forming a sealed space except the connection, and having a liquid containing portion which can generate a negative pressure by deformation, and liquid residual amount detecting means for detecting a liquid level position of the liquid in the liquid containing portion to detect a liquid residual amount in the liquid containing portion. Since the liquid residual amount can be known, a user can know the time to exchange the liquid containing chamber. Moreover, by detecting the liquid state in the liquid containing portion, more stable liquid supply operation can be realized.

Abstract: A method for manufacturing a fiber aggregate formed by fiber having reforming surface comprises the steps of providing a fiber surface having thermoplastic resin at least on the surface layer thereof with a hydrophilic processing liquid containing polymer having a first portion with more hydrophilic group than the surface, and a second portion having interfacial energy different from that of the hydrophilic group, and interfacial energy substantially equal to the surface energy of the fiber; orientating the second portion toward the fiber surface, while orientating polymer to the side different from the surface of the first group; and forming a fiber absorber by heating the fiber having the reformed surface in the step of orientating polymer to thermally bond the contact points of fibers themselves.

Abstract: A liquid ejection head cartridge comprises a head portion for ejecting liquid; a liquid supply portion for supplying the liquid to the recording head portion; an air vent for fluid communication with ambience and a negative pressure producing member accommodating container accommodating a negative pressure producing member capable of retaining liquid therein; a liquid reservoir having a liquid reservoir portion for containing liquid and constituting a substantially sealed space except for a communication portion with the negative pressure producing member accommodating container; a container holder for holding the liquid reservoir and the negative pressure producing member accommodating container which are in fluid communication with each other through the communicating portion and having a liquid supply path to the recording head from a liquid supply portion of the negative pressure producing member accommodating container; wherein the recording head portion, the negative pressure producing member accommodat

Abstract: An ink tank module used for an inkjet recording apparatus includes a plurality of ink tanks having substantially the same outside shape and integrated by being coupled together, wherein each of the plurality of ink tanks includes an ink accommodating section for accommodating ink and a supply port for supplying the ink to an inkjet recording head, the plurality of ink tanks are disposed so that the supply ports are disposed on the same surface and include a coupling member interposed therebetween and an annular film member for covering the plurality of ink tanks and the coupling member, and the ink tank module can integrally be mounted and dismounted on and from a holder on which the inkjet recording head is mounted.

Abstract: A liquid container for containing printing liquid for supplying to a recording head for an ink jet recording apparatus, the container includes a first chamber containing a negative pressure producing material and having a printing liquid supply port connectable to a recording head for allowing printing liquid to be supplied to the recording head and an air vent for allowing ambient air to enter the container, and a second chamber which provides a printing liquid reservoir for the first chamber and is substantially closed apart from a communication port communicating with the first chamber to allow the printing liquid to flow into the first chamber and to allow air to be introduced into the second chamber from the first chamber. The second chamber comprises a replaceable printing liquid chamber.

Abstract: An ink containing apparatus for containing ink includes a negative pressure producing material; a first container for containing the negative pressure producing material, the first container having an air vent and a supply port for supplying the ink out; a second container for containing ink; a communication part for communication between bottom portions of the first and second containers; and ribs for introducing ambient air adjacent the air vent for introducing air into the communication part.

Abstract: A liquid storing container attachable and detachable to and from a recording device includes a negative pressure producing member storage chamber which has a bottom wall and opposed side walls and which accommodates a negative pressure producing member and is equipped with a liquid supplying section in the bottom wall and an atmosphere communication section. A partition wall separates the negative pressure producing member storage chamber from a liquid storage chamber and defines a communicating hole for establishing communication therebetween. A path in the vicinity of the communicating hole on the negative pressure producing member storage chamber side introduces the atmosphere from the negative pressure producing member storage chamber into the liquid storage chamber. The negative pressure producing member is made with a fiber material having directionality and the communication hole is offset from the bottom wall.

Abstract: A liquid supply method using a liquid supply system has a capillary force generating member container, an atmospheric air communication portion a liquid supply portion, a communication portion and a liquid supply container. A capillary force generating member container has a capillary force generating member, a communication portion, an atmospheric air communication portion and a liquid supply portion, and a liquid supply container that can be attached to and removed from a capillary force generating member container having a capillary force generating member an atmospheric air communication portion and a liquid supply portion.

Abstract: A liquid container which is in detachably connectable to a supply tube which is in fluid communication with a liquid ejection recording head, the liquid container including a liquid accommodating portion for accommodating liquid to be supplied to the liquid ejection recording head and a supply port for permitting supply of the liquid to the recording head from the liquid accommodating portion by connection of the liquid container to the liquid ejection recording head, the liquid container includes a capillary force generating member for generating a capillary force to absorb the recording liquid deposited on the surface of the supply tube and in the supply port into a space, other than the liquid accommodating portion, in the liquid container; wherein a capillary force A generated in an absorption region for absorbing the recording liquid remaining in the supply port adjacent the supply port of the capillary force generating member and a capillary force B in a storing region for storing the recording liquid a

Abstract: An ink jet recording head comprises a grooved ceiling plate provided with a plurality of discharge openings for discharging ink, and a plurality of ink flow path grooves to form ink flow paths conductively connected with the discharge openings, a plurality of elemental substrates provided with a plurality of electrothermal transducing devices to generate thermal energy used for discharging ink, and a metallic pressure member for pressing the plurality of elemental substrates to be in contact with the grooved ceiling plate. The grooved ceiling plate and the elemental substrates are coupled to enable the ink flow path grooves and the electrothermal transducing devices to correspond to each other for the formation of ink flow paths. Here, the pressure member presses the reverse side of the surface of the elemental substrates having the electrothermal transducing devices provided therefor in order to couple the elemental substrates with the grooved ceiling plate.

Abstract: An ink containing apparatus for containing ink includes a negative pressure producing material; a first container for containing the negative pressure producing material, the first container having an air vent and a supply port for supplying the ink out; a second container for containing ink; a communication part for communication between bottom portions of the first and second containers; and ribs for introducing ambient air adjacent the air vent for introducing air into the communication part.

Abstract: A liquid container includes an outer wall constituting a casing; an inner wall constituting an inner bladder for accommodating liquid, the inner bladder having outer shape substantially equivalent to an inner shape of the outer wall, and the inner bladder having a flexibility and being separable from the casing; a pinch-off portion where portions of the inner wall are welded to each other and are pinched by the outer wall to be supported by the outer wall; wherein the inner wall includes a thicker portion having a larger thickness than another portion of the inner wall, at both sides of the welded portion; and a cavity provided between an outer surface of the thicker portion of the inner wall and an inner surface of a corresponding portion of an inner surface of the outer wall.

Abstract: An ink tank module used for an inkjet recording apparatus includes a plurality of ink tanks having substantially the same outside shape and integrated by being coupled together, wherein each of the plurality of ink tanks includes an ink accommodating section for accommodating ink and a supply port for supplying the ink to an inkjet recording head, the plurality of ink tanks are disposed so that the supply ports are disposed on the same surface and include a coupling member interposed therebetween and an annular film member for covering the plurality of ink tanks and the coupling member, and the ink tank module can integrally be mounted and dismounted on and from a holder on which the inkjet recording head is mounted.

Abstract: Disclosed herein is an ink-contacting member used in an ink-jet recording apparatus, which comprises, as a principal component, a resin material obtained by adding a phenolic antioxidant having an isocyanurate skeleton represented by the formula.