A recording apparatus includes an ink tank, a recording head, a carriage, an ink supply channel, one or more memory devices, and one or more processors to execute the set of instructions to perform operations including causing the recording head to eject the ink based on print data to perform recording on a recording medium; and obtaining, based on the print data, information on an amount of ink to be ejected to a recordable area in which the carriage moves in one of the first direction and the second direction. A length of the ink supply channel from the bend to the recording head increases in the first direction and decreases in the second direction. The one or more processors changes acceleration of the carriage according to the amount of ink to be ejected to the recordable area, the amount being indicated by the information.

A method for display control is provided. The method includes obtaining information of a remaining amount display color displaying a remaining amount of a consumable supply, obtaining the information of a background color in a displaying area displaying the remaining amount of the consumable supply, and changing a display content in the displaying area on the basis of the remaining amount display color and the background color.

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.

A liquid ejection apparatus includes a housing provided at least with an upper surface and side surfaces, and a liquid tank that is arranged in the housing and is refillable with a liquid from outside. A display unit that indicates a remaining liquid amount in the liquid tank is arranged at least at one of joining portions each joining the upper surface to one of the side surfaces.

A recording apparatus 101 includes a liquid storage portion 46 configured to store liquid, a recording head 22 that ejects liquid supplied from the liquid storage portion 46 onto the medium, and a light emitting unit 301 configured to emit light, wherein the liquid storage portion 46 has a float 48 configured to float on liquid in the liquid storage portion 46 and to move according to movement of liquid surface LS while maintaining a posture, and a front surface 43F in which the liquid in the liquid storage portion 46 is visually checkable from outside the liquid storage portion 46, wherein the float 48 has a front surface 48a that by receiving the light from the light emitting unit 301, appears luminous when viewed from a direction facing the front surface 43F.

A recording apparatus includes a channel through which liquid to be supplied to a recording head that ejects the liquid flows and a concentration measuring unit including a light emitting unit and a light receiving unit and configured to measure the concentration of the liquid, wherein the concentration measuring unit is disposed at a direction change portion at which the liquid flowing through the channel changes in direction.

A printing-fluid cartridge is inserted into a prescribed insertion space of a cartridge-attachment section in an insertion direction crossing a gravitational direction to be attached thereto in an attached posture. The printing-fluid cartridge includes: a housing including a storage chamber, a supply portion having a supply hole, an electrical interface disposed at an upper surface of the housing, and an interfering surface. The interfering surface is positioned upward of the storage chamber and extends in a widthwise direction of the housing. The interfering surface is positioned downward and frontward relative to the electrical interface and is configured to abut against a projection provided at another insertion space different from the prescribed insertion space of the cartridge-attachment section during an insertion of the printing-fluid cartridge into the another insertion space.

A liquid supply apparatus includes a tank and a cartridge attachable to and detachable from the tank along an attachment and detachment direction crossing a vertical direction. The cartridge includes a first storing chamber configured to store liquid therein. The tank includes a second storing chamber configured to store liquid therein, a liquid channel and an air channel that communicate with the second storing chamber, and an air communication port allowing the second storing chamber to communicate with an outside thereof. When the cartridge is attached to the tank with the first storing chamber of the cartridge communicating with the liquid channel and the air channel of the tank, the first storing chamber has a portion located above the liquid channel and the air channel in the vertical direction, and the tank is located below a secondary-lower surface and faces a secondary-front surface.

An ink jet recording apparatus includes an ink composition, an ink encasement in which the ink composition is encased, a recording head that ejects the ink composition, and a carriage configured to move the recording head back and forth. The carriage carries the ink encasement, with the ink encasement integrated with the carriage. The ink encasement has an ink fill port that opens and shuts as a port through which the ink composition is loaded. The ink composition contains a water-soluble dye and a polyhydric alcohol with a normal boiling point of 270° C. or above, with the percentage of the polyhydric alcohol being 26.0% by mass or less of the total amount of the ink composition.

A printer includes an ink tank, a print head performing printing by using ink in the ink tank; a light source irradiating an inside of the ink tank with light; a sensor detecting light incident from the ink tank during a period in which the light source emits light; and a background plate facing the light source and the sensor in the ink tank.