Abstract: An ink cartridge includes a container body with a surface, the surface having a recess, the recess having a bottom and a perimeter wall, and a guide projection disposed within the recess, at least a portion of the guide projection extending from the bottom of the recess toward the surface. Viewing the guide projection in a direction perpendicular to the bottom of the recess, the guide projection has at least three edges. The perimeter wall and the edges of the guide projection define a path therebetween, and the path has at least a predetermined width.

Abstract: A liquid cartridge for supplying liquid to a liquid ejecting apparatus, includes: a liquid accommodating part for holding the liquid; a channel for allowing the liquid in the liquid accommodating part to flow to the outside of the liquid accommodating part; and a check valve for preventing air from getting into the liquid accommodating part via the channel in a case where the channel is opened to the atmosphere with the channel faced upward and allowing backward flow of liquid from the liquid ejecting apparatus to the liquid accommodating part while the channel is connected to the liquid ejecting apparatus.

Abstract: An ink cartridge and an ink cartridge holder for maintaining the relative position between the information reading section of the ink cartridge holder and the information storing unit of the ink cartridge, which should be aligned accurately, even if the ink cartridge has instability to the ink cartridge holder due to the variation in each products. The ink cartridge which supplies ink to a recording apparatus includes: a substantially rectangular parallelepiped ink cartridge main body holding the ink; a connection electrode section provided on a part of a first side of the ink cartridge main body and including a connection terminal; an ink supply unit provided in a front surface which intersects the first wall; and a positioning section guiding a positioning member of the recording apparatus to the vicinity of the connection electrode on the front surface so that the positioning member opposes to the connection electrode section in the direction parallel with the connection electrode section.

Abstract: An ink cartridge and an ink cartridge holder for maintaining the relative position between the information reading section of the ink cartridge holder and the information storing unit of the ink cartridge, which should be aligned accurately, even if the ink cartridge has instability to the ink cartridge holder due to the variation in each products. The ink cartridge which supplies ink to a recording apparatus includes: a substantially rectangular parallelepiped ink cartridge main body holding the ink; a connection electrode section provided on a part of a first side of the ink cartridge main body and including a connection terminal; an ink supply unit provided in a front surface which intersects the first wall; and a positioning section guiding a positioning member of the recording apparatus to the vicinity of the connection electrode on the front surface so that the positioning member opposes to the connection electrode section in the direction parallel with the connection electrode section.

Abstract: The invention provides a liquid container for storing liquid to be supplied to a liquid consuming apparatus. The liquid container is constructed such that pressurized fluid is sent to its inside so that the liquid in the inside is delivered to the outside. The liquid container includes a container body which stores the liquid in its inside. The container body includes a pressurized fluid introduction port for introducing the pressurized fluid to the inside and a liquid delivery port for delivering the liquid to the outside. A detection unit is provided in the container body and outputs an output signal which is changed in accordance with a change in pressure of the liquid in the inside of the container body.

Abstract: A maintenance cartridge has a main body (2) mountable in a recording apparatus, similarly as an ink cartridge, and a plug element (4), which is provided in a region corresponding to an ink supply port of the ink cartridge, for sealing an ink supply needle (B) that supplies ink to an ink jet recording head (A).

Abstract: An ink cartridge for a printing apparatus providing ink to a print head through a tapered ink supply needle and removably attached to the print head. The ink cartridge comprises an ink chamber for containing ink, an ink supply port, a packing member and a valve device. The ink supply port supplies ink from the ink chamber to the print head of the printing apparatus, the ink supply port comprising an external opening. The packing member is provided in the ink supply port and forms an ink channel for allowing a flow of ink. The packing member seals the ink supply needle of the printing apparatus by fitting therewith. The valve device is contained in the ink supply port and elastically abuts against the packing member. The valve device selectively opens and closes the ink channel in conjunction with the ink supply needle.

Abstract: This invention relates to a liquid container, a liquid ejection device and a liquid container case, which may effectively use a liquid stored in the liquid container, and may be reduced in size in simple constitution. An ink cartridge (11) as a liquid container includes a plurality of ink packs (12) and a container case (13) for storing the ink packs. Each ink pack (12) includes an ink outlet member (15) having an ink supply port, which is mounted on a bag part. The container case (13) has a substantially box-shaped case body part (21) and a lid case (22) covering an opening. In the ink cartridge (11), the ink packs (12) are inclined at an angle of &thgr; to the container case (13), and the ink packs (12) are accommodated in the state of overlapping a part of the adjacent ink pack (12).

Abstract: An ink cartridge has pivotable levers connected to walls of a container, and both pawls and protruded guide portions formed on the levers. The pawls are engageable with an ink cartridge holder. The protruded guide portions contact the ink cartridge holder to move the levers in the opening direction. Further, protruded stopper portions are formed to permit pivoting movement of the levers to such a degree as to disengage the pawls from the ink cartridge holder.

Abstract: An ink cartridge for an ink jet printer having a housing having at least one wall. The ink cartridge further has at least two ink chambers for containing different ink accommodated in the housing. Ink supply ports are formed in one wall of the housing within each of the ink chambers. Each of the ink supply ports has an inner opening and an outer opening. The distance from the inner opening of a first ink supply port to that of a second ink supply port adjacent to the first ink supply port is different from a second distance from the outer opening of the first ink supply opening to that of the second ink supply port.

Abstract: An ink cartridge for a printing apparatus providing ink to a print head through a tapered ink supply needle and removably attached to the print head. The ink cartridge includes an ink chamber for containing ink, an ink supply port, a packing member and a valve device. The ink supply port supplies ink from the ink chamber to the print head of the printing apparatus, the ink supply port including an external opening. The packing member is provided in the ink supply port and forms an ink channel for allowing a flow of ink. The packing member seals the ink supply needle of the printing apparatus by fitting therewith. The valve device is contained in the ink supply port and elastically abuts against the packing member. The valve device selectively opens and closes the ink channel in conjunction with the ink supply needle.

Abstract: An ink container which includes an ink supply port for supplying ink to a recording head, and is formed with a flexible member shaped like a bag, which deforms in accordance with an amount of remaining ink contained therein, the ink container comprising: a sensor module serving as vibration activating and detecting unit, provided on one of the surfaces of the ink container, for emitting a vibration to the ink; and a rigid member provided on a location of the other surface of the ink container, which is opposed to the sensor module; wherein an amount of remaining ink is detected based on a vibration characteristic of the vibration activating and detecting unit which depends on a distance between the vibration activating and detecting unit and the rigid member.

Abstract: An ink cartridge for an ink jet printer having a housing having at least one wall. The ink cartridge further has at least two ink chambers for containing different ink accommodated in the housing. Ink supply ports are formed in one wall of the housing within each of the ink chambers. Each of the ink supply ports has an inner opening and an outer opening. The distance from the inner opening of a first ink supply port to that of a second ink supply port adjacent to the first ink supply port is different from a second distance from the outer opening of the first ink supply opening to that of the second ink supply port.

Abstract: A liquid cartridge for supplying liquid to a liquid ejecting apparatus, includes: a liquid accommodating part for holding the liquid; a channel for allowing the liquid in the liquid accommodating part to flow to the outside of the liquid accommodating part; and a check valve for preventing air from getting into the liquid accommodating part via the channel in a case where the channel is opened to the atmosphere with the channel faced upward and allowing backward flow of liquid from the liquid ejecting apparatus to the liquid accommodating part while the channel is connected to the liquid ejecting apparatus.

Abstract: An ink cartridge for an ink jet printing apparatus having a printhead which ejects ink droplets onto a recording medium and an ink supply needle introducing ink to the printhead, the ink cartridge having a substantially rectangular housing containing ink therein, the housing having a first outer wall and a second outer wall which is substantially perpendicular to the first outer wall; an ink supply port formed in the first wall for directing ink in the housing to the printhead; a valve mechanism arranged in the ink supply port including a valve seat allowing the ink supply needle to pass therethrough; a valve body movable along the axis of the ink supply port; and an elastic member biasing the valve body against the valve seat, and a memory device for storing information relating to ink mounted on the second wall of the housing and substantially in parallel therewith, the memory device being formed in the vicinity of the ink supply port, which wall directing in parallel with a direction along which the ink su

Abstract: An ink cartridge and an ink cartridge holder for maintaining the relative position between the information reading section of the ink cartridge holder and the information storing unit of the ink cartridge, which should be aligned accurately, even if the ink cartridge has instability to the ink cartridge holder due to the variation in each products. The ink cartridge which supplies ink to a recording apparatus includes: a substantially rectangular parallelepiped ink cartridge main body holding the ink; a connection electrode section provided on a part of a first side of the ink cartridge main body and including a connection terminal; an ink supply unit provided in a front surface which intersects the first wall; and a positioning section guiding a positioning member of the recording apparatus to the vicinity of the connection electrode on the front surface so that the positioning member opposes to the connection electrode section in the direction parallel with the connection electrode section.

Abstract: An ink cartridge for an ink jet printing apparatus having a printhead which ejects ink droplets onto a recording medium and an ink supply needle introducing ink to the printhead, the ink cartridge having a substantially rectangular housing containing ink therein, the housing having a first outer wall and a second outer wall which is substantially perpendicular to the first outer wall; an ink supply port formed in the first wall for directing ink in the housing to the printhead; a valve mechanism arranged in the ink supply port including a valve seat allowing the ink supply needle to pass therethrough; a valve body movable along the axis of the ink supply port; and an elastic member biasing the valve body against the valve seat, and a memory device for storing information relating to ink mounted on the second wall of the housing and substantially in parallel therewith, the memory device being formed in the vicinity of the ink supply port, which wall directing in parallel with a direction along which the ink su

Abstract: An ink cartridge has pivotable levers connected to walls of a container, and both pawls and protruded guide portions formed on the levers. The pawls are engageable with an ink cartridge holder. The protruded guide portions contact the ink cartridge holder to move the levers in the opening direction. Further, protruded stopper portions are formed to permit pivoting movement of the levers to such a degree as to disengage the pawls from the ink cartridge holder.

Abstract: An ink supply port is sealed with a seal material made up of two layers of at least a physical protective layer and an airtight hold layer and formed with slits in the physical protective layer. When ink cartridge is mounted, a tip of an ink introduction member breaks the seal material sealing the ink supply port along the slits made in the seal member, and air is released to the atmosphere without raising pressure of a space of packing. Then, the ink introduction member penetrates the packing.