A liquid cartridge includes a case, a liquid supply portion, a circuit board, a residual-amount detecting portion, a base surface, and a plate member. The residual-amount detecting portion includes an optical access portion accessible by light traveling in a left-right direction. The optical access portion has a portion positioned above and away from electrodes of the circuit board by a first distance in an attached posture. The plate member extends frontward from the base surface, and provides a light-shielding region and a light-transmissive region. The light-shielding region is positioned rearward of the electrodes and frontward of the residual-amount detecting portion. The light-transmissive region is positioned rearward of the light-shielding region and frontward of the residual-amount detecting portion. Each of the light-transmissive region and the light-transmissive region has a portion positioned above and away from the electrodes by the first distance in the attached posture.

A liquid cartridge includes: a cartridge case defining a liquid storage chamber; a liquid supply portion provided at the cartridge case; a residual-amount detecting portion configured to change a state of incident light according to an amount of liquid stored in the liquid storage chamber; and a plate member. The residual-amount detecting portion includes an optical access portion accessible by light traveling in a left-right direction in an attached posture of the liquid cartridge. The plate member is positioned above the liquid storage chamber and frontward of the optical access portion in the attached posture. The plate member is pivotable between a first position and a second position about an axis extending in an up-down direction. In the attached posture of the liquid cartridge, the plate member extends in a front-rear direction at the first position, and extends in a direction crossing the front-rear direction at the second position.

A liquid cartridge includes a case, a liquid supplying portion, a circuit board, a plate member, and a residual-amount detecting portion. The plate member is positioned rearward and above electrodes of the circuit board in an attached posture. The residual-amount detecting portion includes an optical access portion configured to receive light traveling in a left-right direction. The plate member is movable between a first position and a second position. At the first position, a portion of the plate member is positioned frontward of the optical access portion and upward of the electrode group. At the second position, a front end of the plate member is positioned closer to the residual-amount detecting portion than at the first position. The plate member at the first position and the residual-amount detecting portion define therebetween in the front-rear direction a light transmissive region whose light transmittance is higher than the plate member.

A liquid cartridge includes: a cartridge case defining therein a liquid storage chamber; a liquid supply portion; a circuit board; a plate member; and a residual-amount detecting portion. The residual-amount detecting portion is configured to change a state of incident light according to an amount of the liquid stored in the liquid storage chamber, and includes an optical access portion on which light traveling in a left-right direction is incident. The plate member is pivotally movable between: a first posture where a portion of the plate member is positioned upward relative to the optical access portion; and a second posture where the plate member is positioned downward relative to the optical access portion. The plate member in the first posture and the residual-amount detecting portion define a light transmissive region therebetween in the front-rear direction. The light transmissive region has a light transmittance greater than that of the plate member.

A liquid cartridge is configured to be inserted into a liquid consuming apparatus in a first direction along a horizontal direction against an urging force directed in a second direction opposite the first direction, and thereby to be mounted to the liquid consuming apparatus. The liquid cartridge is configured to pivot about a pivot center in the liquid consuming apparatus. The liquid cartridge includes a rear face, and the rear face includes a first portion and a second portion positioned further in an upward direction than the first portion. The first portion includes a portion positioned further in a downward direction than the pivot center, and the first portion is positioned further in the first direction than the second portion.

A liquid storage container includes a container main body that is capable of storing a liquid and at least a portion of which includes a translucent outer wall; a support member that is integrally formed with the container main body; and a rotation member that is rotatably supported by the support member. The rotation member includes a float that rotates due to fluctuations in a liquid level of the liquid, and a display member that rotates in conjunction with the float and is capable of displaying a position of the float to an outside through the translucent outer wall.

A liquid ejecting device includes a head having a nozzle configured to eject liquid, a container that is connected with the head and is configured to store the liquid, a communication section configured to communicate an internal space of the container with atmosphere, and a liquid reservoir configured to store the liquid and to be removably attached to the container. An internal space of the liquid reservoir is communicated with the internal space of the container through a liquid flow path and a gas flow path in an attached state where the liquid reservoir is attached to the container.

A liquid remaining amount detecting mechanism includes a rotating member that is disposed in a storage chamber of a tank that stores a liquid, and a sensor. The rotating member is rotatable about a shaft and includes a float that receives buoyancy from the liquid, a detection target portion that is detectable by the sensor, and a through-hole into which the shaft is inserted. The sensor is disposed at a position facing a portion of a locus of the detection target portion when the rotating member is rotated. The liquid remaining amount detecting mechanism further includes a liquid pool portion, at least a portion of which is located between an outer peripheral surface of the shaft and an inner peripheral surface of the through-hole to hold the liquid.

A liquid-printing apparatus, having a conveyer, a printing head, a liquid storage, a carriage, a scanning assembly, a remaining amount detector, and a controller, is provided. The printing head prints an image in a printing area ranging from a print-start position to a print-finish position along a scanning direction. The scanning assembly performs pass actions to move the carriage from a scan-start position to a scan-terminal position along the scanning direction. The remaining amount detector detects an amount of the liquid in the liquid storage. The controller controls the scanning assembly to perform a first pass action in a setting such that the scan-terminal position for the first pass action is separated farther in the scanning direction, in proportion to largeness of the amount of the liquid in the liquid storage, from one of the printing area for the first pass action and the printing area for a second pass action.

An ink cartridge includes an ink chamber that stores ink. A protruding chamber protrudes upward from the ink chamber in a gravitational direction when the ink cartridge is used. A swing body has a float and a detection portion, and a detection chamber in which the detection portion moves and with which an amount of ink stored in the ink chamber is detected in accordance with a position of the detection portion. In the ink cartridge, a pivot center of the swing body that pivotally moves is disposed inside the protruding chamber.