Abstract: A liquid ejection apparatus includes a liquid ejection head, a liquid storage portion having a first storage chamber and a second storage chamber, a first discharge flow path communicating with an upper portion of the first storage chamber, a second discharge flow path communicating with an upper portion of the second storage chamber, a carriage, a coupling portion configured to be coupled to and separated from a coupled portion, a negative pressure generating section, a first opening/closing portion, a second opening/closing portion, a switching member configured to switch between a first state and a second state, the first opening/closing portion can be opened and closed in conjunction with a movement of the carriage when the switching member is in the first state, and the second opening/closing portion can be opened and closed in conjunction with the movement of the carriage when the switching member is in the second state.

Abstract: A switching mechanism includes a first rotating body that performs forward rotation and reverse rotation by receiving a driving force transmitted from a driving source; and a second rotating body having convex portions provided on an outer circumference at intervals. The first rotating body has an engagement portion configured to move along the outer circumference of the second rotating body. When the first rotating body rotates in a forward direction, engagement of the engagement portion with the convex portion causes rotation of the second rotating body in the forward direction together with the first rotating body. When the first rotating body rotates in a reverse direction, the engagement portion moves along the outer circumference of the second rotating body so that the second rotating body does not rotate in the reverse direction. A first interval, which is at least one of the intervals, is larger than other intervals.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid from a nozzle, a liquid storage portion having a storage chamber configured to store the liquid supplied from a liquid supply source to the liquid ejecting head, and a carriage on which the liquid ejecting head and the liquid storage portion are mounted and configured to reciprocate in a scanning direction. The liquid ejecting apparatus includes a discharge flow path configured to discharge air in an upper part of the storage chamber, a coupling portion configured to be coupled to and separated from a coupled portion of the discharge flow path, and a negative pressure generating portion that applies a negative pressure to the coupling portion. When the carriage moves to a predetermined position, the coupling portion is coupled to the coupled portion of the discharge flow path.

Abstract: A liquid ejecting device includes a head including a nozzle and configured to eject, from the nozzle, liquid supplied from a plurality of supply sources, a plurality of supply channels coupled to the plurality of supply sources and the head, a plurality of reservoir portions located respectively at the plurality of supply channels, each of the plurality of reservoir portions including a storage chamber configured to store the liquid supplied from the plurality of supply sources, a plurality of discharging channels respectively coupled to the plurality of reservoir portions, and each configured to eject a bubble from the plurality of storage chambers, and a suctioning portion configured to apply a negative pressure to the plurality of discharging channels. Each of the plurality of discharging channels includes a resistance portion with a larger pressure loss than a corresponding supply channel of the plurality of supply channels.

Abstract: A switching mechanism includes a first rotating body that performs forward rotation and reverse rotation by receiving a driving force transmitted from a driving source; and a second rotating body having convex portions provided on an outer circumference at intervals. The first rotating body has an engagement portion configured to move along the outer circumference of the second rotating body. When the first rotating body rotates in a forward direction, engagement of the engagement portion with the convex portion causes rotation of the second rotating body in the forward direction together with the first rotating body. When the first rotating body rotates in a reverse direction, the engagement portion moves along the outer circumference of the second rotating body so that the second rotating body does not rotate in the reverse direction. A first interval, which is at least one of the intervals, is larger than other intervals.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid from a nozzle, a liquid storage portion having a storage chamber configured to store the liquid supplied from a liquid supply source to the liquid ejecting head, and a carriage on which the liquid ejecting head and the liquid storage portion are mounted and configured to reciprocate in a scanning direction. The liquid ejecting apparatus includes a discharge flow path configured to discharge air in an upper part of the storage chamber, a coupling portion configured to be coupled to and separated from a coupled portion of the discharge flow path, and a negative pressure generating portion that applies a negative pressure to the coupling portion. When the carriage moves to a predetermined position, the coupling portion is coupled to the coupled portion of the discharge flow path.

Abstract: A liquid ejecting apparatus including a liquid ejecting head that ejects a liquid, a liquid storage portion that stores the liquid, a supply flow path that communicates the liquid ejecting head and the liquid storage portion with each other, and an air chamber that is coupled to the supply flow path through a plurality of flow paths. The supply flow path includes a filter. The plurality of flow paths are, in the supply flow path, connected upstream of the filter, and the air chamber is positioned at a position higher than the filter when in a posture during use.

Abstract: A liquid ejecting apparatus including a liquid ejecting head that ejects a liquid, a liquid storage portion that stores the liquid, a supply flow path that communicates the liquid ejecting head and the liquid storage portion with each other, and an air chamber that is coupled to the supply flow path through a plurality of flow paths. The supply flow path includes a filter. The plurality of flow paths are, in the supply flow path, connected upstream of the filter, and the air chamber is positioned at a position higher than the filter when in a posture during use.

Abstract: Various defects that occur when a water-repellent or defoaming layer is formed on a contact portion of a liquid container are reduced. A method for manufacturing a liquid container for containing a liquid includes: (a) preparing a pre-formation liquid container in which a surface layer has not been formed; (b) bringing an aqueous solution obtained by adding water to one of a defoaming agent and a water-repellent agent into contact with a surface of a contact portion with which the liquid is brought into contact, of the pre-formation liquid container; and (c) drying, after the step (b), the contact portion to form the surface layer that is formed of one of the defoaming agent and the water-repellent agent on a surface of the contact portion.

Abstract: A liquid tank includes a liquid supply portion, a first liquid chamber, a liquid communication flow path and an air communication flow path. The liquid communication flow path includes an upstream end which is connected to the first liquid chamber, a rising flow path which is located on a downstream side with respect to the upstream end and which extends upward in a mounting state, a lowering flow path which is located on the downstream side with respect to the rising flow path and which extends downward in the mounting state and a downstream end which is located on the downstream side with respect to the lowering flow path and which is connected to the liquid supply portion. In the mounting state, the liquid supply portion is located lower than the downstream end and extends downward toward a liquid supply port.

Abstract: A tank includes: a liquid chamber; an air introduction inlet; a liquid inlet; a liquid outlet; a liquid communication path; a filter; and an exterior wall forming the liquid chamber and including: an upper wall; a bottom wall; a first side wall; and a second side wall positioned farther away from a liquid ejection head than the first side wall is in the in-use state. The liquid communication path has: a first liquid communication path on an outer surface side of the bottom wall; and a second liquid communication path provided on an outer surface side of the first side wall and communicating with the first liquid communication path. The liquid outlet and the filter are positioned at an end part of the first liquid communication path near the second side wall. The liquid outlet is positioned in the liquid communication path near the upper wall.

Abstract: Provided is a liquid tank in which air bubbles are less likely to remain in a valve mechanism provided in an on-carriage-type liquid tank. The liquid tank has a liquid supply portion, a first liquid chamber, a second liquid chamber that can contain the liquid to be supplied to the first liquid chamber, and a valve mechanism that is arranged between the first liquid chamber and the second liquid chamber, and the valve mechanism has, inside an exterior wall constituting the valve mechanism, a channel member, a biasing member, a valve body, and a rod from an upstream side of flow of the liquid in the stated order, the channel member is provided inside the biasing member, and includes a first channel in which the liquid can pass, and the exterior wall and the biasing member form a second channel through which the liquid can pass therebetween.

Abstract: A tank includes: a liquid chamber; an air introduction inlet; a liquid inlet; a liquid outlet; a liquid communication path; a filter; and an exterior wall forming the liquid chamber and including: an upper wall; a bottom wall; a first side wall; and a second side wall positioned farther away from a liquid ejection head than the first side wall is in the in-use state. The liquid communication path has: a first liquid communication path on an outer surface side of the bottom wall; and a second liquid communication path provided on an outer surface side of the first side wall and communicating with the first liquid communication path. The liquid outlet and the filter are positioned at an end part of the first liquid communication path near the second side wall. The liquid outlet is positioned in the liquid communication path near the upper wall.

Abstract: Provided is a liquid tank in which air bubbles are less likely to remain in a valve mechanism provided in an on-carriage-type liquid tank. The liquid tank has a liquid supply portion, a first liquid chamber, a second liquid chamber that can contain the liquid to be supplied to the first liquid chamber, and a valve mechanism that is arranged between the first liquid chamber and the second liquid chamber, and the valve mechanism has, inside an exterior wall constituting the valve mechanism, a channel member, a biasing member, a valve body, and a rod from an upstream side of flow of the liquid in the stated order, the channel member is provided inside the biasing member, and includes a first channel in which the liquid can pass, and the exterior wall and the biasing member form a second channel through which the liquid can pass therebetween.

Abstract: A recording apparatus includes: a recording head that performs recording; a carriage that has a recording head on the bottom and is movable in a width direction intersecting a medium transport direction; at least one ink tank loaded on the carriage, above the recording head, the ink tank storing ink to be supplied to the recording head and having a filling port from which ink can be poured from a refilling container. The ink tank has, at least in one portion thereof, a level checking portion formed of a transparent material through which the liquid level in the liquid container can be viewed. The carriage has a first viewing portion through which the level checking portion of the ink tank can be viewed.

Abstract: A liquid tank includes a liquid supply portion, a first liquid chamber, a liquid communication flow path and an air communication flow path. The liquid communication flow path includes an upstream end which is connected to the first liquid chamber, a rising flow path which is located on a downstream side with respect to the upstream end and which extends upward in a mounting state, a lowering flow path which is located on the downstream side with respect to the rising flow path and which extends downward in the mounting state and a downstream end which is located on the downstream side with respect to the lowering flow path and which is connected to the liquid supply portion. In the mounting state, the liquid supply portion is located lower than the downstream end and extends downward toward a liquid supply port.

Abstract: A liquid jet apparatus comprises a liquid jet head, a carriage carrying the liquid jet head in a side-to-side direction, a liquid flow channel, and a liquid container in fluid communication with the liquid jet head through the liquid flow channel. The liquid container includes a liquid containing chamber arranged along a front/back direction orthogonal to the side-to-side direction; a liquid outlet port, from which the liquid contained in the liquid containing chamber flows to the liquid flow channel; and a liquid inlet port, through which the liquid is injected into the liquid containing chamber. The liquid inlet port has an end surface that does not face in a vertical direction relative to a normal posture of the apparatus.

Abstract: A recording apparatus includes: a recording head that performs recording; a carriage that has a recording head on the bottom and is movable in a width direction intersecting a medium transport direction; at least one ink tank loaded on the carriage, above the recording head, the ink tank storing ink to be supplied to the recording head and having a filling port from which ink can be poured from a refilling container. The ink tank has, at least in one portion thereof, a level checking portion formed of a transparent material through which the liquid level in the liquid container can be viewed. The carriage has a first viewing portion through which the level checking portion of the ink tank can be viewed.

Abstract: Various defects that occur when a water-repellent or defoaming layer is formed on a contact portion of a liquid container are reduced. A method for manufacturing a liquid container for containing a liquid includes: (a) preparing a pre-formation liquid container in which a surface layer has not been formed; (b) bringing an aqueous solution obtained by adding water to one of a defoaming agent and a water-repellent agent into contact with a surface of a contact portion with which the liquid is brought into contact, of the pre-formation liquid container; and (c) drying, after the step (b), the contact portion to form the surface layer that is formed of one of the defoaming agent and the water-repellent agent on a surface of the contact portion.

Abstract: A liquid ejecting head which includes a nozzle forming face onto which a nozzle portion from which liquid is ejected is formed to be open, in which a liquid repellent film including fluorine is formed on the nozzle forming face through a base film interposed therebetween, and a total thickness of the base film is 670 [nm] or less. In addition, a signal intensity of a molecular weight 301 in the liquid repellent film obtained by using a time-of-flight secondary ion mass analysis method is 0.00005 or more and 0.00020 or less, and is 0.00005 or more and 0.00015 or less, preferably.