Abstract: A replaceable ink tank for an ink cartridge used in a bubble jet printer comprises a container formed by two side walls providing major surfaces of the container, and back, front, top and bottom walls. At least one ink supply port is provided in the bottom wall of container and is disposed for supplying ink from at least one ink chamber in the container to a corresponding ink tapping pipe in the ink cartridge. The container is configured for insertion into an opening in the top and front of the ink cartridge with the bottom wall of the container facing downward and a back wall facing a back wall of the ink cartridge, the container being constructed for engaging a camming shoe located at the back inside of a top wall of the cartridge and securing the container in place in the ink cartridge with the ink supply port connecting with the corresponding ink tapping pipe.

Abstract: A replaceable tank for an ink cartridge used in a bubble jet printer comprises a container formed by side walls, top and bottom walls connected to the side walls. At least one ink supply port is provided in the bottom wall of the container and is disposed for supplying ink from at least one ink chamber in the container into a corresponding ink tapping pipe in the ink cartridge. The container includes a locking member on one of the container side walls for engaging a guide groove in the cartridge, the container being configured for insertion into an open top of an ink tank holder formed by the cartridge, with the bottom wall of the container facing downward and the side walls of the container aligned with side walls of the ink cartridge. The locking member is constructed for securing the container in place in the ink tank holder with the ink supply port connecting with the corresponding ink tapping pipe.

Abstract: An ink container includes a cylindrical member having a closed end and an opposite open end; and a flexible member covering the open end of the cylindrical member to define an ink containing portion. The flexible member has a bottom portion and a bent portion that is movable along an internal surface of the cylindrical member with consumption of the ink therein, wherein the bottom portion is less easily deformable than the bent portion and movement of the bent portion is irreversible.

Abstract: A liquid storing container employable for an ink jet recording apparatus includes a housing, a porous ink absorbing member received in the housing, and a first filter coming in contact with the ink absorbing member. The liquid storing container is detachably connected to an ink jet recording head having a second filter disposed in a liquid flow path thereof. The liquid storing container is constructed such that the volume between the first filter and the second filter, a size of each filter, a condition for compressively receiving the ink absorbing member in the housing, and an inner structure of the liquid storing container satisfactorily coincide with predetermined conditions.

Abstract: A liquid storing container employable for an ink jet recording apparatus includes a housing, a porous ink absorbing member received in the housing, and a first filter coming in contact with the ink absorbing member. The liquid storing container is detachably connected to an ink jet recording head having a second filter disposed in a liquid flow path thereof. The liquid storing container is constructed such that the volume between the first filter and the second filter, a size of each filter, a condition for compressively receiving the ink absorbing member in the housing, and an inner structure of the liquid storing container satisfactorily coincide with predetermined conditions.

Abstract: The invention provides a method and apparatus for manufacturing a liquid container having an enclosed space within an inner wall of the liquid container, the enclosed space filled with a plurality of porous members. The plurality of porous members include a plurality of inner porous members and a plurality of outer porous members. The method includes the step of packing the porous members into the enclosed space so that the inner porous members only contact and press against other inner porous members and/or outer porous members, and the outer porous members contact and press against the inner porous members and the inner wall of the liquid container. The method also comprises a step of compressing the porous members. The apparatus has compressing means for compressing the porous members and packing means for packing the porous members into the liquid container.