Liquid container

A liquid container for storing liquid to be supplied to a liquid consuming apparatus, which is constructed such that pressurized fluid is sent to its inside so that the liquid in the inside is delivered to the outside, the liquid container comprising:

• a container body:
• a first reservoir chamber which stores the liquid within and which is provided in the container body;
• a second reservoir chamber to which the liquid is supplied from the first reservoir chamber and which is provided in the container body;
• a pressurized fluid introduction port for introducing the pressurized fluid to the inside of the container body;
• a detection unit which is attached to the second reservoir chamber and outputs an output signal which indicates whether an amount of the liquid stored in the first reservoir chamber is more than a predetermined value;
• and
• a pressurizing unit which pressurizes the liquid in the second reservoir chamber.

A liquid container constructed such that:

• a pressure is applied to liquid in a liquid containing chamber by a pressure of a pressurized fluid fed from a pressurized fluid introduction port to feed the liquid to a liquid consuming apparatus from a liquid delivery port;
• liquid in a liquid containing chamber is selectively pressurized from outside to feed the liquid in the liquid containing chamber to the liquid consuming apparatus from the liquid delivery port;
• or liquid in a liquid containing chamber is constantly pressurized by a built-in pressurizing unit to feed the liquid to the liquid consuming apparatus from the liquid delivery port, the liquid container comprising:
• a buffer chamber connected to a channel for connecting the liquid containing chamber to the liquid delivery port, wherein:
• the buffer chamber is expanded in its volume by an inflow of the liquid from the liquid containing chamber to the buffer chamber, and contracted when the inflow of the liquid from the liquid containing chamber to the buffer chamber is stopped;
• a detecting unit adapted to output a signal in relation to a volume variation of the buffer chamber;
• and
• a pressurizing unit which pressurizes the liquid in the buffer chamber.

A liquid container for storing therein liquid to be supplied to a liquid consuming apparatus, the liquid container comprising:

• a container body having a liquid delivery port for delivering the liquid to the outside;
• a first reservoir chamber formed in the inside of the container body and for storing the liquid;
• a first pressurizing unit capable of pressurizing the liquid in the first reservoir chamber;
• a second reservoir chamber which is formed in the inside of the container body and communicates with the first reservoir chamber and the liquid delivery port and in which pressure in the first reservoir chamber is transmitted through the liquid to the liquid in its inside;
• a second pressurizing unit for pressurizing the liquid in the second reservoir chamber to delivery the liquid through the liquid delivery port;
• and
• a detection unit which is provided in the container body and whose output signal is changed in accordance with a change of pressure of the liquid in the second reservoir chamber,
• wherein P1>P2>P3 is established where a pressure applied to the liquid in the first reservoir chamber by the first pressurizing unit is P1, a pressure applied to the liquid in the second reservoir chamber by the second pressurizing unit is P2, and a pressure loss in a liquid flow path from the liquid container to the liquid consuming apparatus is P3.

A liquid container for storing therein liquid to be supplied to a liquid consuming apparatus, the liquid container comprising:

• a container body having a pressurized fluid introduction port for introducing pressurized fluid into the inside and a liquid delivery port for delivering the liquid to the outside;
• a first reservoir chamber which is formed in the inside the container body, stores the liquid, and includes a first flexible film constituting at least a part of a wall forming the first reservoir chamber;
• a first pressurizing unit for applying pressure of the pressurized fluid to the first flexible film to deform the first flexible film;
• a second reservoir chamber which is formed in the inside of the container body, communicates with the first reservoir chamber and the liquid delivery port, and includes a second flexible film constituting a part of a wall forming the second reservoir chamber and in which the second flexible film seals a substantially circular or regular polygonal opening formed by the rigid wall forming the second reservoir chamber, and the pressure of the pressurized fluid applied to the liquid in the first reservoir chamber is transmitted through the liquid to the liquid in the inside of the second reservoir chamber;
• a second pressurizing unit which pressurizes the liquid in the second reservoir chamber to deliver the liquid from the liquid delivery port in a state where the liquid in the first reservoir chamber is consumed and the pressure of the pressurized fluid is not transmitted to the liquid in the inside of the first reservoir chamber, and includes a press member for pressing the second flexible film toward a direction of decreasing a volume of the second reservoir chamber;
• and
• a detection unit which is provided in the container body and whose output signal is changed in accordance with a change of pressure of the liquid in the second reservoir chamber.

A liquid container for storing liquid to be supplied to a liquid consuming apparatus, which is constructed such that pressurized fluid is introduced into its inside so that the liquid in the inside is pressurized and is delivered to the outside, the liquid container comprising:

• a container body having a pressurized fluid introduction port for introducing the pressurized fluid into the inside and a liquid delivery port for delivering the liquid to the outside;
• a first liquid reservoir chamber which is formed in the inside of the container body, stores the liquid, and is constructed such that its volume is decreased by receiving pressure of the pressurized fluid;
• a second liquid reservoir chamber which is formed in the inside of the container body and communicates with the first liquid reservoir chamber and in which the pressure of the pressurized fluid applied to the liquid in the inside of the first liquid reservoir chamber is transmitted through the liquid to the liquid in the inside of the second liquid reservoir chamber and its volume is changed in accordance with pressure of the liquid in the inside changed by transmission of the pressure of the pressurized fluid;
• and
• a narrow flow path which is formed at a midway of a liquid flow path communicating the first liquid reservoir chamber and the liquid delivery port, and is openably closed by a movable part displaced in accordance with the change of the volume of the second liquid reservoir chamber in a state where the liquid in the first liquid reservoir chamber is not pressurized by the pressurized fluid.

A liquid container for storing liquid to be supplied to a liquid consuming apparatus, which is constructed such that pressurized fluid is introduced into its inside so that the liquid in the inside is pressurized and is delivered to the outside, the liquid container comprising:

• a container body having a pressurized fluid introduction port for introducing the pressurized fluid into the inside and a liquid delivery port for delivering the liquid to the outside;
• a first liquid reservoir chamber which is formed in the inside of the container body, stores the liquid, and is constructed such that its volume is decreased by receiving pressure of the pressurized fluid;
• a second liquid reservoir chamber which is formed in the inside of the container body and communicates with the first liquid reservoir chamber and in which the pressure of the pressurized fluid applied to the liquid in the inside of the first liquid reservoir chamber is transmitted through the liquid to the liquid in the inside of the second liquid reservoir chamber and its volume is changed in accordance with pressure of the liquid in the inside changed by transmission of the pressure of the pressurized fluid;
• and
• a narrow flow path which is formed at a midway of a liquid flow path communicating the first liquid reservoir chamber and the liquid delivery port, and is openably closed by a movable part displaced in accordance with the change of the volume of the second liquid reservoir chamber in a state where the liquid in the first liquid reservoir chamber is not pressurized by the pressurized fluid, wherein:
• at least a part of a wall forming the second liquid reservoir chamber is constituted by a flexible film,
• the movable part includes at least a part of the flexible film, and
• the narrow flow path is closed by the flexible film displaced to decrease the volume of the second liquid reservoir chamber.

A liquid container for storing liquid to be supplied to a liquid consuming apparatus, which is constructed such that pressurized fluid is introduced into its inside so that the liquid in the inside is pressurized and is delivered to the outside, the liquid container comprising:

• a container body having a pressurized fluid introduction port for introducing the pressurized fluid into the inside and a liquid delivery port for delivering the liquid to the outside;
• a first liquid reservoir chamber which is formed in the inside of the container body, stores the liquid, and is constructed such that its volume is decreased by receiving pressure of the pressurized fluid;
• a second liquid reservoir chamber which is formed in the inside of the container body and communicates with the first liquid reservoir chamber and in which the pressure of the pressurized fluid applied to the liquid in the inside of the first liquid reservoir chamber is transmitted through the liquid to the liquid in the inside of the second liquid reservoir chamber and its volume is changed in accordance with pressure of the liquid in the inside changed by transmission of the pressure of the pressurized fluid;
• and
• a narrow flow path which is formed at a midway of a liquid flow path communicating the first liquid reservoir chamber and the liquid delivery port, and is openably closed by a movable part displaced in accordance with the change of the volume of the second liquid reservoir chamber in a state where the liquid in the first liquid reservoir chamber is not pressurized by the pressurized fluid, wherein the narrow flow path includes a small hole in which a ring-shaped projection is formed, on a side where it is closed by the movable part.