Abstract: A liquid supplying system using a negative pressure producing member accommodating chamber including a liquid supply portion for supplying liquid to outside, an air vent for fluid communication with ambience and a negative pressure producing member accommodating chamber for accommodating a negative pressure producing member for retaining the liquid therein, and using a liquid accommodating container which is detachably mountable to said negative pressure producing member accommodating chamber and which defines a substantially hermetically sealed space except for fluid communication with said negative pressure producing member accommodating chamber, the improvement residing in: an air introducing groove, provided at a connecting portion relative to said negative pressure producing member accommodating container in said liquid accommodating container, for gas-liquid exchange for permitting introduction of the gas into the liquid containing portion and discharge of the liquid.

Abstract: A liquid supply system includes a liquid supply container provided with a liquid accommodating portion being deformable by storing liquid in the closed space to be able to generate negative pressure, a liquid supply unit detachably mountable on the liquid supply container to contain the capillary force generating material retaining liquid therein, and at the same time, to supply liquid to the outside, a container for the capillary force generating material provided with an air communication unit communicating with the air outside to be able to generate the gas-liquid exchange for leading out liquid by introducing gas into the liquid accommodating portion through the communication unit connected with the liquid supply container, and the communication unit being arranged on the upper surface of the container for the capillary force generating material, at the same time, the liquid supply container being arranged above the container for the capillary force generating material through the communication unit to sh

Abstract: An ink jet head cartridge stored in a closed space. The ink jet head cartridge includes a negative pressure generating member containing chamber and a liquid supply container which has a liquid containing part forming a closed space and generating negative pressure by deforming accompanied with flowing-out of the contained liquid and a box-like body with an inside surface equal to or analogous to the outside surface of the liquid containing part and with an atmosphere communicating part and which is mounted onto a mounting part so as to form the communicating part. As stored, a first sealing member seals the ejection port and a second sealing member seals the atmosphere communicating part, part of the liquid containing part is separated from the box-like body, and the interior of the liquid containing part and the liquid supply passage from the communicating part to the recording head are filled with liquid.

Abstract: A liquid container of the present invention is substantially in polyhedral form with the corners formed by the corners of the extended portions of the three planes of the polyhedron form. The container including outer walls having strength to form a housing, inner walls having the outer plane equal to or analogous to the inner plane of the outer walls with the corners corresponding to the corners of the outer walls to form a liquid containing portion capable of containing liquid in the interior formed thereby, having strength smaller than that of the outer walls, and a liquid supply portion for supplying liquid contained in the liquid containing portion to the outside. Then, for this liquid container, the liquid supply portion is sealed only by the inner walls. With the liquid container thus structured, it is possible to prevent liquid leakage more reliably without using the sealing tape, cap, or the like at the time of distribution for delivery.

Abstract: A liquid supplying system using a negative pressure producing member accommodating chamber including a liquid supply portion for supplying liquid to outside, an air vent for fluid communication with ambience and a negative pressure producing member accommodating chamber for accommodating a negative pressure producing member for retaining the liquid therein, and using a liquid accommodating container which is detachably mountable to said negative pressure producing member accommodating chamber and which defines a substantially hermetically sealed space except for fluid communication with said negative pressure producing member accommodating chamber, the improvement residing in: an air introducing groove, provided at a connecting portion relative to said negative pressure producing member accommodating container in said liquid accommodating container, for gas-liquid exchange for permitting introduction of the gas into the liquid containing portion and discharge of the liquid.

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 liquid container includes a generally prism-like casing having a substantial air vent and having a corner portion formed by extensions of three sides of the prism configuration; an inner shell for containing liquid therein, the inner shell having outside equivalent or similar to inside of the casing; a liquid supply portion for supplying the liquid to outside from the liquid containing portion; a pinch-off portion where the inner shell is pinched by the casing; an integral portion where a maximum area side of the inner shell is integral with a side of the inner shell opposite therefrom.

Abstract: A liquid container comprises an inner wall that forms the liquid containing portion to contain liquid therein; an outer wall that forms the container to contain the liquid containing portion therein; and a liquid supply portion for supplying liquid from the liquid containing portion to the outside. Then, the inner wall is arranged to be a member to generate negative pressure in the liquid containing portion by being deformed following the leading-out of the liquid, and also, formed by the material having an elastic modulus change of 25% or less against the temperature change of use environment. With the liquid container thus structured, it is possible to implement the stable supply of liquid by stabilizing the characteristic of negative pressure in the liquid containing portion thereof irrespective of the temperature changes of use environments.

Abstract: A liquid supply method includes a step of preparing a negative pressure producing material chamber, including a liquid supply portion for permitting supply of the liquid to an outside and an air vent for fluid communication with ambience, for accommodating a negative pressure producing member for retaining the liquid; a step of preparing a liquid containing chamber having a liquid containing portion for accommodating the liquid, the liquid containing portion forming a substantially sealed space except for fluid communication with the negative pressure producing material chamber; a first liquid supply step of permitting supply of the liquid to the outside by permitting movement of the liquid into the negative pressure producing material chamber from the liquid containing portion without introduction of the air into the liquid containing chamber with a negative pressure while permitting decrease of a volume of the liquid containing portion; a second liquid supply step, after the first liquid supply step, of per

Abstract: A liquid injection method for a liquid container for an ink jet recording, the container including a flexible liquid containing portion for containing liquid in substantially hermetically sealed state, a casing, having an inside configuration equivalent or similar to an outer configuration of the liquid containing portion, for separably covering the liquid containing portion, a liquid discharging portion for permitting the liquid to be discharged to outside, the method includes supplying the liquid having a temperature higher than a normal temperature into the liquid containing portion; substantially hermetically sealing the liquid discharging portion with a liquid discharge permission member for permitting the liquid to discharge in use.

Abstract: An ink tank provided with an ink containing portion containing ink therein, and a housing protecting the ink containing portion is characterized by a resin material capable of transmitting therethrough visible light and infrared light travelling from the exterior of the housing toward the interior of the ink containing portion and capable of decreasing ultraviolet light travelling from the exterior of the housing toward the interior of the ink containing portion.

Abstract: A liquid container includes a generally prism-like casing having a substantial air vent and having a corner portion formed by extensions of three sides of the prism configuration; an inner shell for containing liquid therein, the inner shell having outside equivalent or similar to inside of the casing; a liquid supply portion for supplying the liquid to outside from the liquid containing portion; a pinch-off portion where the inner shell is pinched by the casing; an integral portion where a maximum area side of the inner shell is integral with a side of the inner shell opposite therefrom.

Abstract: A liquid container includes a polyhedron outer wall having a substantial air vent and having a corner portion defined by extensions of two surfaces thereof; an inner wall forming a liquid containing portion for containing liquid therein, the inner wall including an outer surface having a shape equivalent or similar to an inner shape of the outer wall, and having a corner portion corresponding to the corner portion of the outer wall; a liquid supply portion for supplying the liquid from the liquid containing portion to outside; wherein the inner wall and outer wall have major surfaces having maximum areas and not provided with the liquid supply portion; wherein when the liquid is discharged through the liquid supply portion, the inner wall deforms such that at least one of angles formed between one side constituting a polygonal shape in a plane perpendicular to the major surface of the inner wall of the liquid container and sides adjacent thereto, decreases, and such that angles formed between the sides formin

Abstract: A liquid ejection head cartridge includes a liquid ejecting head and a liquid container. The liquid ejection head includes an ejection outlet, a bubble generation region, and 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. The movable member moves from the first to the second position by pressure produced by the generation of a bubble to permit expansion of the bubble more in a downstream side closer to the ejection outlet.

Abstract: A valve member for a recording liquid supply port is connected to a liquid ejection recording means for supplying recording liquid to said liquid ejecting means, comprises an elastically deformable plate-like member; a plug member on one side of said plate-like member; a supporting member for supporting said plate-like portion on said liquid container, said supporting member being on said one side thereof; wherein said plug member has a sealing portion, adjacent a free end portion thereof, for substantially plugging said liquid supply port by being inserted into the liquid supply port, and a liquid feeding portion, away from the free end portion, said liquid feeding portion having a cross-sectional area which is smaller than that of said sealing portion, wherein the cross-sectional area is in a plane parallel with the liquid supply port.