Ink cartridge for ink jet printer
DCFirst Claim
1. An ink-jet recording device for use with an ink container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port leading to the ink supply chamber and through which ink flows from the ink supply chamber to the ink-jet recording device, comprising:
- a connecting member upon which the ink container is detachably mounted;
an ink-jet recording head joined to said connecting member; and
an ink supply mechanism mounted to said connecting member for supplying ink from the ink supply port of the ink container to said recording head, the ink supply mechanism comprising;
a value body; and
a differential pressure valve including a movable elastic membrane member having an opening and normally in elastic contact with the valve body so that the opening is blocked by the valve body, the differential pressure valve separating the ink chamber from the ink supply chamber and opening at a pressure that is greater than a pressure exerted on the differential pressure valve just by the ink in the ink chamber.
1 Assignment
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Accused Products
Abstract
An ink cartridge for an ink jet printer is provided with a container having at least a first wall. An ink supply port is formed through the first wall for supplying ink to the exterior of the container. An ink chamber and an ink supply chamber are formed by a membrane valve seat made of an elastic thin membrane and formed with a through hole therethrough. A valve body is positioned opposing the through hole formed in the membrane valve seat, the valve body and membrane valve seat adjacent said through hole formed therein being maintained selectively in contact by a pressure difference between said ink chamber and said ink supply chamber.
87 Citations
74 Claims
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1. An ink-jet recording device for use with an ink container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port leading to the ink supply chamber and through which ink flows from the ink supply chamber to the ink-jet recording device, comprising:
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a connecting member upon which the ink container is detachably mounted;
an ink-jet recording head joined to said connecting member; and
an ink supply mechanism mounted to said connecting member for supplying ink from the ink supply port of the ink container to said recording head, the ink supply mechanism comprising;
a value body; and
a differential pressure valve including a movable elastic membrane member having an opening and normally in elastic contact with the valve body so that the opening is blocked by the valve body, the differential pressure valve separating the ink chamber from the ink supply chamber and opening at a pressure that is greater than a pressure exerted on the differential pressure valve just by the ink in the ink chamber. - View Dependent Claims (2, 3)
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4. An ink supply unit for use with an ink container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port in fluid communication with the ink supply chamber and adapted for connection to an ink-jet recording head, comprising:
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a valve body; and
a differential pressure valve including a movable elastic membrane member having an ink flow port and normally in elastic contact with the valve body so that the ink flow port is blocked by the valve body, the differential pressure valve being disposed in the ink container, the differential pressure valve separating the ink chamber from the ink supply chamber and opening at a pressure that is greater than a pressure exerted on the differential pressure valve just by the ink in the ink chamber. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port leading to the ink supply chamber and through which ink flows from the ink supply chamber to a recording head; and
a mechanism for selectively communicating said ink chamber with the recording head in response to a pressure change caused in said ink supply chamber due to ejection of ink from the recording head, said mechanism including;
a stationary valve part; and
a movable valve part having an elastically deformable membrane having a through hole;
wherein said stationary valve part and said movable valve part are normally in contact with each other to close said through hole, and said movable valve part is selectively separated from said stationary valve part to open said through hole and communicate said ink chamber with the recording head through said through hole depending on said pressure change, the movable valve part separating from the stationary valve part at a pressure that is greater than a pressure exerted on the movable valve part just by the ink in the ink chamber. - View Dependent Claims (18)
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19. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having a partition wall that defines and separates a first ink accumulating chamber containing an ink and a second ink accumulating chamber, said partition wall extending in a first direction, and having a first communication hole;
an elastically deformable first valve part opposite from said first ink accumulating chamber with respect to said partition wall, and defining a third ink accumulating chamber between said first valve part and said partition wall and within said second ink accumulating chamber, said first valve part having a second communication hole offset from said first communication hole in said first direction, the first valve part moving at a pressure that is greater than a pressure exerted on the first valve part just by the ink in the first ink accumulating chamber;
a stationary, rigid second valve part provided to said partition wall and aligned with and blocking said second communication hole, so that when the first valve part moves said second communication hole is not blocked; and
an ink supply port leading to the second ink accumulating chamber and through which ink flows from the second ink accumulating chamber to the ink-jet recording apparatus. - View Dependent Claims (20, 21)
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22. A selective ink supply system to be located between an ink chamber containing an ink and an ink supply port through which the ink flows to an ink-jet recording apparatus upon which the ink chamber is detachably mounted, said system comprising:
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a valve assembly having a valve part and a first communication hole adjacent to said valve part; and
an elastic member movable toward and away from said valve assembly, said elastic member having a second communication hole aligned with and blocked by said valve part and offset from said first communication hole, the elastic member separating from said valve part at a pressure that is greater than a pressure exerted on the elastic member just by the ink in the ink chamber so that when the elastic member moves said second communication hole is not blocked. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A selective ink supply system for selectively supplying ink from an ink chamber containing an ink to an ink supply port through which the ink flows to an ink-jet recording apparatus upon which said ink chamber is detachably mounted, said system comprising:
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first means for fixedly positioning a valve part and a first communication hole adjacent to said valve part and communicated with said ink chamber; and
second means for movably positioning a second communication hole against, and to be blocked by, said valve part and selectively communicating said first communication hole with said ink supply port through said second communication hole, said second means separating from the valve part at a pressure that is greater than a pressure exerted on said second means just by the ink in said ink chamber so that when the second means separates from the valve part said second communication hole is not blocked, wherein said second communication hole is aligned with said valve part and offset from said first communication hole. - View Dependent Claims (30, 31)
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32. A method of assembling an ink container for detachable mounting on an ink jet recording apparatus, comprising the steps of:
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providing the ink container, the ink container having an ink chamber containing an ink, an ink supply chamber, an ink supply port in fluid communication with the ink supply chamber, a member separating the ink chamber from the ink supply chamber, the member having a valve body, and an elastic valve seat having an opening; and
securing the valve seat and the member against each other and deforming the valve seat so that the opening presses against the valve body to prevent the valve seat from separating from the valve body under pressure exerted just by the ink in the ink chamber.
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33. A method of assembling an ink-jet recording apparatus having a connecting member upon which an ink container is detachably mounted, comprising the steps of:
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providing the ink container, the ink container having an ink chamber containing an ink, an ink supply chamber, an ink supply port in fluid communication with the ink supply chamber, a member separating the ink chamber from the ink supply chamber, the member having a valve body, and an elastic valve seat having an opening;
securing the valve seat and the member against each other and deforming the valve seat so that the opening presses against the valve body to prevent the valve seat from separating from the valve body under pressure exerted just by the ink in the ink chamber; and
mounting the ink container on the connecting member.
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34. An ink-jet recording device for use with an ink container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port leading to the ink supply chamber and through which ink flows from the ink supply chamber to the ink-jet recording device, comprising:
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a connecting member upon which the ink container is detachably mounted;
an ink-jet recording head joined to said connecting member; and
an ink supply mechanism mounted to said connecting member for supplying ink from the ink supply port of the ink container to said recording head, the ink supply mechanism comprising;
a valve body, and a differential pressure valve including a movable elastic membrane member having an opening and normally in elastic contact with the valve body so that the opening is blocked by the valve body, the differential pressure valve separating the ink chamber from the ink supply chamber and opening when ink downstream of the differential pressure valve establishes a pressure difference larger than a predetermined pressure difference relative to the ink in the ink chamber due to ink consumption by the ink-jet recording head. - View Dependent Claims (35, 36)
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37. An ink supply unit for use with an ink container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port in fluid communication with the ink supply chamber and adapted for connection to an ink-jet recording head, comprising:
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a valve body; and
a differential pressure valve including a movable elastic membrane member having an ink flow port and normally in elastic contact with the valve body so that the ink flow port is blocked by the valve body, the differential pressure valve being disposed in the ink container, the differential pressure valve separating the ink chamber from the ink supply chamber and opening when ink downstream of the differential pressure valve establishes a pressure difference larger than a predetermined pressure difference relative to the ink in the ink chamber due to ink consumption by the ink-jet recording head. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port leading to the ink supply chamber and through which ink flows from the ink supply chamber to a recording head; and
a mechanism for selectively communicating said ink chamber with the recording head in response to a pressure change caused in said ink supply chamber due to ejection of ink from the recording head, said mechanism including;
a stationary valve part; and
a movable valve part having an elastically deformable membrane having a through hole;
wherein said stationary valve part and said movable valve part are normally in contact with each other to close said through hole, and said movable valve part is selectively separated from said stationary valve part to open said through hole and communicate said ink chamber with the recording head through said through hole depending on said pressure change, the movable valve part separating from the stationary valve part when ink downstream of the movable valve part establishes a pressure difference larger than a predetermined pressure difference relative to the ink in the ink chamber due to ink consumption by the recording head. - View Dependent Claims (51)
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52. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having a partition wall that defines and separates a first ink accumulating chamber containing an ink and a second ink accumulating chamber, said partition wall extending in a first direction, and having a first communication hole;
an elastically deformable first valve part opposite from said first ink accumulating chamber with respect to said partition wall, and defining a third ink accumulating chamber between said first valve part and said partition wall and within said second ink accumulating chamber, said first valve part having a second communication hole offset from said first communication hole in said first direction;
a stationary, rigid second valve part provided to said partition wall and aligned with and blocking said second communication hole, so that when the first valve part moves said second communication hole is not blocked, the first valve part separating from the second valve part when ink downstream of the first valve part establishes a pressure difference larger than a predetermined pressure difference relative to the ink in the first ink accumulating chamber due to ink consumption by a recording head; and
an ink supply port leading to the second ink accumulating chamber and through which ink flows from the second ink accumulating chamber to the ink-jet recording apparatus. - View Dependent Claims (53, 54)
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55. A selective ink supply system to be located between an ink chamber containing an ink and an ink supply port through which the ink flows to an ink-jet recording apparatus upon which the ink chamber is detachably mounted, said system comprising:
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a valve assembly having a valve part and a first communication hole adjacent to said valve part; and
an elastic member movable toward and away from said valve assembly, said elastic member having a second communication hole aligned with and blocked by said valve part and offset from said first communication hole, the elastic member separating from said valve part when ink downstream of the elastic member establishes a pressure difference larger than a predetermined pressure difference relative to the ink in the ink chamber due to ink consumption by an ink-jet recording head. - View Dependent Claims (56, 57, 58, 59, 60, 61)
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62. A selective ink supply system for selectively supplying ink from an ink chamber containing an ink to an ink supply port through which the ink flows to an ink-jet recording apparatus upon which said ink chamber is detachably mounted, said system comprising:
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first means for fixedly positioning a valve part and a first communication hole adjacent to said valve part and communicated with said ink chamber; and
second means for movably positioning a second communication hole against, and to be blocked by, said valve part and selectively communicating said first communication hole with said ink supply port through said second communication hole, said second means separating from the valve part when ink downstream of said second means establishes a pressure difference larger than a predetermined pressure difference relative to the ink in the ink chamber due to ink consumption by an ink-jet recording head, wherein said second communication hole is aligned with said valve part and offset from said first communication hole. - View Dependent Claims (63, 64)
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65. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port leading to the ink supply chamber and through which ink flows from the ink supply chamber to a recording head; and
a mechanism for selectively communicating said ink chamber with the recording head in response to a pressure change caused in said ink supply chamber due to ejection of ink from the recording head, said mechanism including;
a stationary valve part; and
a movable valve part having an elastically deformable membrane having a through hole;
wherein said stationary valve part and said movable valve part are normally in contact with each other to close said through hole, and said movable valve part is selectively separated from said stationary valve part to open said through hole and communicate said ink chamber with the recording head through said through hole depending on said pressure change, the elastically deformable membrane being deformed so that the through hole presses against the stationary valve part to prevent the elastically deformable membrane from separating from the stationary valve part under pressure exerted just by the ink in the ink chamber. - View Dependent Claims (66)
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67. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having a partition wall that defines and separates a first ink accumulating chamber containing an ink and a second ink accumulating chamber, said partition wall extending in a first direction, and having a first communication hole;
an elastically deformable first valve part opposite from said first ink accumulating chamber with respect to said partition wall, and defining a third ink accumulating chamber between said first valve part and said partition wall and within said second ink accumulating chamber, said first valve part having a second communication hole offset from said first communication hole in said first direction;
a stationary, rigid second valve part provided to said partition wall and aligned with and blocking said second communication hole, so that when the first valve part moves said second communication hole is not blocked, the first valve part being deformed so that the second communication hole presses against the second valve part to prevent the first valve part from separating from the second valve part under pressure exerted just by the ink in the ink chamber; and
an ink supply port leading to the second ink accumulating chamber and through which ink flows from the second ink accumulating chamber to the ink-jet recording apparatus. - View Dependent Claims (68, 69)
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70. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having an ink chamber having an amount of an ink therein, an ink supply chamber, and an ink supply port leading to the ink supply chamber and through which ink flows from the ink supply chamber to a recording head; and
a mechanism for selectively communicating said ink chamber with the recording head in response to a pressure change caused in said ink supply chamber due to ejection of ink from the recording head, said mechanism including;
a stationary valve part; and
a movable valve part having an elastically deformable membrane having a through hole;
wherein said stationary valve part and said movable valve part are normally in contact with each other to close said through hole, the movable valve part being urged against the stationary valve part, and said movable valve part is selectively separated from said stationary valve part to open said through hole and communicate said ink chamber with the recording head through said through hole depending on said pressure change, the movable valve part separating from the stationary valve part as a result of a pressure difference between said ink chamber and said ink supply chamber due to ink consumption by the ink jet recording head. - View Dependent Claims (71)
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72. An ink tank unit for detachable mounting on a connecting member of an ink jet recording apparatus, comprising:
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a container having a partition wall that defines and separates a first ink accumulating chamber containing an ink and a second ink accumulating chamber, said partition wall extending in a first direction, and having a first communication hole;
an elastically deformable first valve part opposite from said first ink accumulating chamber with respect to said partition wall, and defining a third ink accumulating chamber between said first valve part and said partition wall and within said second ink accumulating chamber, said first valve part having a second communication hole offset from said first communication hole in said first direction;
a stationary, rigid second valve part provided to said partition wall and aligned with and blocking said second communication hole, the first valve part being urged against the second valve part, so that when the first valve part moves said second communication hole is not blocked, the first valve part separating from the second valve part as a result of a pressure difference between said first ink accumulating chamber and said second ink accumulating chamber due to ink consumption by the ink jet recording headA; and
an ink supply port leading to the second ink accumulating chamber and through which ink flows from the second ink accumulating chamber to the ink-jet recording apparatus. - View Dependent Claims (73, 74)
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Specification