Abstract: The liquid cartridge includes: a front surface facing in an insertion direction intersecting a gravitational direction; a rear surface spaced apart from the front surface in the insertion direction; an upper surface facing upward; a liquid supply portion disposed at the front surface; an electrical interface disposed at the upper surface; and a movable member including a detection portion. The movable member is movable between a first position and a second position. The movable member at the second position is positioned upstream in the insertion direction relative to the electrical interface. The movable member at the first position has a portion whose widthwise position is coincident with the electrical interface in a widthwise direction orthogonal to the insertion direction and the gravitational direction. The portion of the movable member at the first position is located downstream in the insertion direction or upward relative to the electrical interface.

Abstract: A system includes: a housing; a cover that is supported by the housing to be movable between a covering position and an opened position; a tank; a reservoir; and a liquid discharging head that is disposed inside the housing and discharges liquid supplied from the tank, wherein the reservoir includes a liquid passage hole; the tank includes a passage tube that extends upward from the tank and is connectable to the liquid passage hole of the reservoir, the cover includes: a first wall that is positioned above the housing at the covering position, and a second wall that extends downward from an edge of the first wall, and when the cover is positioned at the covering position and the reservoir is connected to the tank, an upper end of the reservoir is positioned above a lower end of the second wall.

Abstract: A liquid cartridge includes: a housing having a storage chamber; a liquid passage in communication with the storage chamber; a circuit board; a deformable member; and a movable surface. The liquid passage extends in a first lateral direction from the housing when the housing is in an operational posture. The circuit board is positioned higher than the storage chamber in a vertical direction perpendicular to the first lateral direction and vertically movable relative to the housing. The deformable member is positioned higher than the storage chamber and is lower than the circuit board. The deformable member is deformable vertically relative to the housing. The circuit board is movable vertically in accordance with deformation of the deformable member. The movable surface is positioned further in a second lateral direction opposite the first lateral direction than the circuit board. The movable surface faces upward and is vertically movable relative to the housing.

Abstract: A liquid cartridge is insertable into an attachment portion of a printing device in an insertion direction and attached thereto in an upright posture. The liquid cartridge includes: a housing defining a liquid chamber; a substrate; a contact; and a memory electrically connected to the contact. The substrate in the upright posture defines a sloped surface facing upward and sloping relative to a first imaginary plane extending in the insertion direction and a widthwise direction orthogonal to the insertion direction and a gravitational direction. The contact is formed on the sloped surface. An acute angle formed between the sloped surface and the first imaginary plane is greater than an acute angle formed between the first imaginary plane and a second imaginary plane passing through: a contact point between the contact and a contact of the device; and a lower end of a wall constituting a holder of the attachment portion.

Abstract: A liquid cartridge is configured to be inserted into an attachment portion of a printing device in an insertion direction and attached thereto in an upright posture. The liquid cartridge includes: a housing; a sealing member; a circuit board; and a support member. The housing includes: a liquid chamber; and a liquid passage. The sealing member is disposed in the liquid passage. The circuit board is positioned rearward in the insertion direction relative to the sealing member in the upright posture. The circuit board includes: a contact; and a memory. The contact of the cartridge is electrically connectable to a contact of the device. The memory is electrically connected to the contact of the cartridge. The support member supports the circuit board. The circuit board supported by the support member is resiliently movable upward and downward relative to the housing in the upright posture.

Abstract: A liquid cartridge is configured to be inserted into a cartridge-attachment section including a casing, a movable member, and an urging member. The casing includes a liquid chamber storing liquid therein; a liquid passage extending in a first direction in an upright posture, and a top surface. The top surface faces upward in the upright posture and formed with a recess. The movable member has a light blocking portion. The light blocking portion in the upright posture is configured to move between a first position and a second position. At least a part of the light blocking portion in the first position is positioned above the top surface in the upright posture. The urging member is configured to urge the movable member toward the first position.

Abstract: A liquid cartridge configured to be inserted into a cartridge-attachment section in an insertion direction includes a casing, and a lever supported by the casing. The lever is pivotable about a pivot axis between a first position and a second position. The lever includes a light-blocking portion configured to block or attenuate light traveling in a widthwise direction crossing the insertion direction and a gravitational direction, and a force-receiving portion positioned closer to a front wall of the casing than the light-blocking portion is to the front wall in the insertion direction. The light-blocking portion is positioned lower at the second position than at the first position. The pivot axis is positioned frontward of the light-blocking portion and rearward of the force-receiving portion in the insertion direction. The lever pivots from the second position to the first position upon application of an external force to the force-receiving portion.

Abstract: A liquid cartridge includes a first surface, a second surface spaced apart from the first surface, and a third surface extending between the first surface and the second surface, with a liquid outlet through the first surface. A circuit board is mounted on the third surface. A locking mechanism includes a locking surface that extends above the third surface, and a liquid detection mechanism includes a light access portion. The light access portion is disposed between the circuit board and the locking surface, and the circuit board is disposed between the first surface and the light access portion.

Abstract: A liquid cartridge includes: a cartridge body defining a liquid chamber; a liquid-supply part; a deformable member protruding upward relative to the cartridge body; and a detection member having a detected part. The liquid chamber is configured such that an internal pressure thereof is reduced in accordance with outflow of liquid from the liquid chamber. The deformable member defines an inner space communicating with the liquid chamber, the deformable member being deformable such that a volume of the inner space is reduced in accordance with the reduction in the internal pressure of the liquid chamber. The detected part is movable from a first position to a second position, the detected part at the second position being in contact with the deformable member, the detected part being further movable from the second position to a third position below the second position in accordance with deformation of the deformable member.

Abstract: A liquid cartridge includes a chamber, a liquid outflow path, a circuit board, a first surface and a second surface. The chamber stores liquid. The liquid outflow path extends from the chamber to an outlet formed at the liquid outflow path. The outlet is to communicate with an exterior of the liquid cartridge and faces frontward. The circuit board is disposed rearward relative to the outlet. The first surface faces at least upwardly. The second surface faces at least rearwardly. The circuit board includes at least one of the first surface and the second surface.

Abstract: A liquid cartridge is insertable into an attachment portion of a printing device in an insertion direction and attached thereto in an upright posture. The liquid cartridge includes: a housing defining a liquid chamber; a substrate; a contact; and a memory electrically connected to the contact. The substrate in the upright posture defines a sloped surface facing upward and sloping relative to a first imaginary plane extending in the insertion direction and a widthwise direction orthogonal to the insertion direction and a gravitational direction. The contact is formed on the sloped surface. An acute angle formed between the sloped surface and the first imaginary plane is greater than an acute angle formed between the first imaginary plane and a second imaginary plane passing through: a contact point between the contact and a contact of the device; and a lower end of a wall constituting a holder of the attachment portion.

Abstract: A system includes: a casing that has a conveyance path and through which a sheet passes; a first tank that is disposed on one side of the conveyance path; a second tank that is disposed on the other side of the conveyance path; a first reservoir that is connectable to the first tank; a second reservoir that is connectable to the second tank; and a liquid ejection head that is disposed inside the casing and is configured to eject liquid supplied from the first tank and the second tank, wherein the first reservoir includes a first liquid flowing hole, the second reservoir includes a second liquid flowing hole, the first tank includes a first flow conduit connectable to the first liquid flowing hole, and the second tank includes a second flow conduit connectable to the second liquid flowing hole.

Abstract: A system includes: a housing; a cover that is supported by the housing to be movable between a covering position and an opened position; a tank; a reservoir; and a liquid discharging head that is disposed inside the housing and discharges liquid supplied from the tank, wherein the reservoir includes a liquid passage hole; the tank includes a passage tube that extends upward from the tank and is connectable to the liquid passage hole of the reservoir, the cover includes: a first wall that is positioned above the housing at the covering position, and a second wall that extends downward from an edge of the first wall, and when the cover is positioned at the covering position and the reservoir is connected to the tank, an upper end of the reservoir is positioned above a lower end of the second wall.

Abstract: A system includes: a housing; a first tank; a second tank; a first reservoir configured to be connected to the first tank; a second reservoir configured to be connected to the second tank; and a liquid discharge head that ejects the liquid supplied from the first tank and the second tank. The housing includes: a front wall; a rear wall facing the front wall; and a housing side contact, the first reservoir and the second reservoir includes: a liquid flow hole; a first outer wall; and a second outer wall facing the first outer wall, the first tank includes a first flow pipe, and the second tank includes a second flow pipe. The system further includes a circuit board that is disposed on the second outer wall and has a reservoir side contact that contacts the housing side contact.

Abstract: A liquid cartridge includes: a cartridge body defining a liquid chamber; a liquid-supply part; a deformable member protruding upward relative to the cartridge body; and a detection member having a detected part. The liquid chamber is configured such that an internal pressure thereof is reduced in accordance with outflow of liquid from the liquid chamber. The deformable member defines an inner space communicating with the liquid chamber, the deformable member being deformable such that a volume of the inner space is reduced in accordance with the reduction in the internal pressure of the liquid chamber. The detected part is movable from a first position to a second position, the detected part at the second position being in contact with the deformable member, the detected part being further movable from the second position to a third position below the second position in accordance with deformation of the deformable member.

Abstract: A liquid cartridge includes a liquid chamber with a liquid outlet configured to supply the liquid from an interior of the chamber to an exterior of the chamber. An actuator is movable between a first position in which the liquid outlet is closed, and a second position in which the liquid outlet is open. A detector is positioned in the chamber, and is movable from a restricted position to a released position in response to movement of the actuator from the first to the second position. The detector is movable from the released position to the restricted position in response to movement of the actuator from the second to the first position.

Abstract: A liquid cartridge is configured to be inserted into a cartridge-attachment section including a casing and a light blocking portion. The casing includes a liquid chamber; a liquid passage extending in a first direction; and a top surface facing upward. The light blocking portion is deformable between a non-deformed state and a deformed state. The light blocking portion, at least in the non-deformed state, is configured to block or attenuate light emitted from the cartridge-attachment section and traveling in a widthwise direction crossing the first direction and a gravitational direction in an upright posture. The light blocking portion in the non-deformed state is configured to be deformed to the deformed state by an external force. The light blocking portion returns to the non-deformed state when the external force is removed from the light blocking portion in the deformed state.

Abstract: A liquid cartridge is configured to be inserted into a cartridge-attachment section including a casing, a movable member, and an urging member. The casing includes a liquid chamber storing liquid therein; a liquid passage extending in a first direction in an upright posture, and a top surface. The top surface faces upward in the upright posture and formed with a recess. The movable member has a light blocking portion. The light blocking portion in the upright posture is configured to move between a first position and a second position. At least a part of the light blocking portion in the first position is positioned above the top surface in the upright posture. The urging member is configured to urge the movable member toward the first position.

Abstract: A printing-fluid containing device configured to be inserted into a cartridge attachment section in an insertion direction to be detachably attached to the cartridge attachment section includes a printing-fluid cartridge and an adaptor. The cartridge includes: a casing; a supply portion; and a detection portion. The adaptor, to which the printing-fluid cartridge is configured to be detachably assembled, includes: an adaptor body into which the printing-fluid cartridge is insertable; an electrical interface; and an engagement portion. The adaptor body has a leading end and a trailing end in the insertion direction. The adaptor body has a front wall at the leading end, has an opening through which the supply portion extends, and further has an outer surface. The electrical interface is disposed on the outer surface. The engagement portion is configured to engage with the cartridge attachment section.

Abstract: A liquid cartridge includes: a cartridge casing having a liquid storage chamber; a first wall; a second wall; and an air communication passage. The first wall is positioned upward relative to the liquid storage chamber. The second wall is positioned upward relative to the first wall. The air communication passage has a first communication hole in communication with the liquid storage chamber and a communication opening open to an atmosphere. The air communication passage includes: an air chamber defined by the first wall and the second wall and in communication with the liquid storage chamber through the first communication hole; a second communication hole formed in the second wall; and a labyrinth path. The labyrinth path is positioned upward relative to the air chamber, and has one end in communication with the second communication hole and another end in communication with the communication opening.