According to an aspect of the present invention, an inkjet printing apparatus includes a print head having an ejection opening surface on which ejection openings for ejecting ink are formed, a tank storing ink to be supplied to the print head, a supply flow path for supplying the ink from the tank to the print head, a collection flow path for collecting the ink from the print head to the tank, a supply pump provided in the supply flow path to supply the ink from the tank to the print head, a tank decompression pump which decompresses the inside of the tank, and a control unit which controls to drive the supply pump and the tank decompression pump to fill the collection flow path with ink.

According to an aspect of the present invention, an inkjet printing apparatus includes a print head having an ejection opening surface on which ejection openings for ejecting ink are formed, a tank storing ink to be supplied to the print head, a supply flow path for supplying the ink from the tank to the print head, a collection flow path for collecting the ink from the print head to the tank, a supply pump provided in the supply flow path to supply the ink from the tank to the print head, a tank decompression pump which decompresses the inside of the tank, and a control unit which controls to drive the supply pump and the tank decompression pump to fill the collection flow path with ink.

A supporting section is disposed to confront an ejection surface and supports a recording medium. A first tank is mounted on a first-tank mount section. A liquid conveying section conveys liquid to a liquid ejecting head. A receiving section receives liquid ejected from the liquid ejecting head. A waste-liquid conveying section conveys liquid to the waste-liquid tank. A first casing holds the liquid ejecting head, the first-tank mount section, and the liquid conveying section. A second casing holds the supporting section, the receiving section, the waste-liquid tank, and the waste-liquid conveying section. The first casing is connected with the second casing such that the first casing is movable relative to the second casing. The first casing takes a first position at which the ejection surface confronts the supporting section and a second position at which the ejection surface is farther away from the supporting section than at the first position.

A supporting section is disposed to confront an ejection surface and supports a recording medium. A first tank is mounted on a first-tank mount section. A liquid conveying section conveys liquid to a liquid ejecting head. A receiving section receives liquid ejected from the liquid ejecting head. A waste-liquid conveying section conveys liquid to the waste-liquid tank. A first casing holds the liquid ejecting head, the first-tank mount section, and the liquid conveying section. A second casing holds the supporting section, the receiving section, the waste-liquid tank, and the waste-liquid conveying section. The first casing is connected with the second casing such that the first casing is movable relative to the second casing. The first casing takes a first position at which the ejection surface confronts the supporting section and a second position at which the ejection surface is farther away from the supporting section than at the first position.

A liquid supplying device includes a tank a tank and a cartridge. The cartridge includes a first storage chamber. The cartridge is formed with a communicating opening in communication with the first storage chamber. The tank has a second storage chamber and a joint having a hollow cylindrical shape. In an attachment state where the communicating opening of the cartridge is connected to the joint, the first storage chamber has a portion positioned above the joint and the second storage chamber is positioned below the joint. At least in the first end portion, the liquid passage has a rectangular shape in a cross section taken along a plane perpendicular to an extending direction of the liquid passage.

A pipette-fillable fluid reservoir body. The fluid reservoir body includes two or more discrete fluid chambers therein. At least one of the fluid chambers contains a pressure compensation device and at least another one of the fluid chambers is devoid of a pressure compensation device. Each of the fluid chambers is in fluid flow communication with a fluid supply via, and each of the fluid chambers have sidewalls and a bottom wall attached to the side walls, wherein the bottom wall slopes toward the fluid supply via. The fluid reservoir body also includes an ejection head support face in fluid flow communication with the fluid chambers for attachment of a fluid ejection device to the ejection head support face for ejecting fluid from the fluid chambers.

A printing system includes: a media feed chassis including a plurality of fixed roller shafts, each roller shaft having a rotatable roller for guiding print media through a media feed path; and inkjet modules mounted on the media feed chassis for printing on the print media. Each inkjet module includes: a support chassis seated on the media feed chassis; a maintenance chassis mounted on the support chassis; and a print bar chassis mounted on the maintenance chassis, the print bar chassis having inkjet printheads mounted thereon.

A printing system includes: a media feed chassis including a plurality of fixed roller shafts, each roller shaft having a rotatable roller for guiding print media through a media feed path; and inkjet modules mounted on the media feed chassis for printing on the print media. Each inkjet module includes: a support chassis seated on the media feed chassis; a maintenance chassis mounted on the support chassis; and a print bar chassis mounted on the maintenance chassis, the print bar chassis having inkjet printheads mounted thereon.

A printer configured to perform a printing operation on a printing medium, including: a cylindrically shaped housing including a bottom surface and a cylindrical surface on which an outlet is formed, the housing being configured to be placed on a horizontal table in any of a first posture in which the bottom surface is opposed to the table and a second posture in which a specific portion of the cylindrical surface is opposed to the table, the outlet being formed at a position of the cylindrical surface at which the printing medium stored in the housing is dischargeable from the outlet irrespective of whether the housing takes the first posture or the second posture on the table; and a second-posture keeping structure to keep the housing in the second posture in a state in which the cylindrical surface is opposed to the table.

A printer configured to perform a printing operation on a printing medium, including: a cylindrically shaped housing including a bottom surface and a cylindrical surface on which an outlet is formed, the housing being configured to be placed on a horizontal table in any of a first posture in which the bottom surface is opposed to the table and a second posture in which a specific portion of the cylindrical surface is opposed to the table, the outlet being formed at a position of the cylindrical surface at which the printing medium stored in the housing is dischargeable from the outlet irrespective of whether the housing takes the first posture or the second posture on the table; and a second-posture keeping structure to keep the housing in the second posture in a state in which the cylindrical surface is opposed to the table.