An ink replenish container comprises a container main body that is able to store the ink; and an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet. The container main body includes a screw formation portion having a screw for engaging with the ink outlet formation member, and a shoulder portion provided on a front end side of the screw formation portion. The ink outlet formation member includes an abutting portion that abuts the shoulder portion.

A recording apparatus includes a first connecting unit which is connectable to a first supply portion to supply a first-color ink into a recording head to eject the first-color ink, and a first prevention unit which prevents the first-color ink through a first supply path from being discharged from a second connecting portion, the second connecting portion being not connected to the recording head. The recording head includes the first supply portion without a portion to supply a second-color ink into the recording head.

A metallic nanoparticle composition includes metallic nanoparticles and a non-aqueous polar protic solvent. The non-aqueous polar protic solvent has two hydroxyl groups, a boiling point of at least 280° C. at 760 mm Hg, and a viscosity in a range of 45 cP to 65 cP at 20° C. Polyvinylpyrrolidone (PVP) is present on the metallic nanoparticle surfaces. A concentration of metals in the metallic nanoparticle composition is in a range of 60 wt% to 90 wt% and a concentration, in aggregate, of solvents having a boiling point of less than 280° C. at 760 mm Hg in the metallic nanoparticle composition does not exceed 3 wt%.

A system includes a tank and a print engine. The tank is configured to store a consumable material for printing supplied in units of a predetermined volume from a reservoir. The print engine is configured to perform image formation on a printing medium using the consumable material in the tank. The system is configured to obtain a cumulative consumption amount of the consumable material used for the image formation by the print engine, obtain the predetermined volume, obtain an order count representing how many times the reservoir has been heretofore ordered, obtain a consumption error correction value for correcting an individual difference in consumption characteristics of the print engine, and determine whether to order a new reservoir based on the cumulative consumption amount of the consumable material, the predetermined volume, the order count, and the consumption error correction value.

A fluid interconnect system including a mating component having an inlet port and a liquid outlet, the inlet port configured to support an interconnector and the liquid outlet configured to engage with a print cartridge so that liquid flows from a liquid source, through the interconnector and the inlet port, and out of the liquid outlet into the print cartridge.

A printing apparatus includes an ink tank and a flow channel member. The tank includes an ink chamber that stores ink, an injection port through which the ink is injected into the chamber, and a first shape portion formed near the injection port. The flow channel member is configured to be disposed inside the injection port and form a channel through which the ink is injected into the chamber. The ink is injected to the chamber from an ink supply container which includes a second shape portion formed near an outlet port of the container and configured to engage the first shape portion. The flow channel member is displaceable in a direction intersecting an inserting direction of inserting the outlet port into the injection port. The container is fixed to the tank by engagement between the first and second shape portions.

A liquid ejecting apparatus includes: a liquid ejecting portion; a liquid storage portion; a filter chamber including an upstream chamber and a downstream chamber divided by a filter; a supply path; a discharge path; an opening/closing valve opening/closing the discharge path; and a pump pressurizing the ink in order to make the ink flow from the liquid storage portion to the upstream chamber, wherein a filling operation of filling the upstream chamber with the ink by driving the pump so that the ink does not pass through the filter in a state in which the opening/closing valve is opened, and then closing the opening/closing valve while the ink is flowing from the liquid storage portion toward the supply path, the upstream chamber, and the discharge path by the driving of the pump is performed.

Convenience of an ink bottle and a bottle set is improved. An ink bottle includes: a container portion that contains ink; a guiding portion that is formed in one end portion of the container portion, and includes an outflow port from which the ink in the container portion flow out; and a cover that covers at least an end portion of the container portion on the opposite side of the guiding portion.

An ink refill container configured to refill an ink tank with ink and an ink refill system. An ink refill container includes a container main body having an ink chamber; an ink outlet forming portion provided at an edge of the container main body including an ink outlet configured to allow ink to flow out from the ink chamber; a valve provided in ink outlet forming portion and configured to seal the ink outlet in an openable and closable manner; and a positioning structure configured to abut on part of the ink tank and position the valve relative to ink tank when valve is opened. The positioning structure has a positioning surface located on an opposite side to a container main body side where the container main body is located, across the valve and extends in a direction intersecting with a center axis of the ink outlet.

An object is to provide a liquid ejecting apparatus that enables a liquid storage container to be properly and easily refilled with a liquid from a liquid refilling container without causing color mixture in the liquid storage container. The liquid ejecting apparatus includes liquid storage containers each configured to feed the liquid to a liquid ejecting portion and liquid refilling containers each configured to refill the liquid storage container with the liquid. A first fitting unit is provided around a liquid injection port in each of the liquid storage containers. A second fitting unit is provided around a liquid pour-out port in each of the liquid refilling containers. The second fitting unit is fitted to the first fitting unit to enable the liquid to be delivered from the liquid pour-out port to the liquid injection port.