Seiko Epson Corporation (JP)

An ink container is used for supplying ink compositions to an apparatus for recording ink jets. It is comprised of an ink chamber that houses the ink and an additional support that connects to the inner wall to help support it. Additionally, there is an ink-pouring port that the ink mixture is to be poured into the chamber.

1. Technical Field

The invention is a pen container that can be attached to an inkjet recording machine. It’s also capable of supplementing the existing composition of ink.

2. Similar Art

In the related art it is known an inkjet recording device that records images or the like on a recording medium with small droplets of ink that discharge from the nozzles on a recording head that records using ink jets. The recording device that uses ink jets has an ink container such as an ink cartridge for giving ink compositions to the recording device.

As such an ink container is known, it has also been identified as an refill (pouring) type of ink container (a known as a continuous supply type ink container) where the continuous supply type of ink container is refilled with an ink mixture instead of replacing theink container. It also has an ink cartridge that is replaceable (a known as an ink cartridge) where the ink container is replaced when an ink composition in the container is greater or less than a specified amount. InJP-A-128511for instance the method of recording ink jets is described that delivers ink via an ink supply tube from a continuous-supply type ink tank to a nozzle. The ink tank comes with an ink refillable design.

In the continuous supply type ink tank described in JP-A-12-2012-148511 is an ink chamber for housing the ink composition is contained therein. In such an ink chamber, a support (such as a rib) is installed to hold the shape of the inkcontainer and to improve its strength or rigidity in some cases.

Continuous supply type ink containers, as described in JP-12-148511 are kind of container that is known as an atmosphere-open. This permits the ink chamber to be opened to the outside air. Inside the ink chamber there exists an interfacial space (gas-liquid interaction) between the air and ink.

When the ink in the ink chamber is consummated, the ink attached to the support gets dried out by getting into contact with the air present in the upper portion of the ink chamber and , consequently, it’s easy to form a thin layer. The resulting thin film can be easily peeled. The peeled film is able to form aggregates within the ink in some cases. The aggregates are then pumped to the head, resulting in the clogging of the head (nozzle).

A filter is also available to take out foreign substances, such as aggregates in the flow path of the ink container. If an ink cartridge type container that can be replaced instead of an ink refill is used even though the aggregates are captured by the filter the ink cartridge is changed before the captured aggregates cause problems for the supply of ink in a lot of cases. This means that the blockage of the filter occurred less frequently. However, the continuous supply type of ink container that is refillable with ink, has a lengthy period of time to use in comparison to the type of ink cartridge ink container, inconveniences such as ink supply failure due to the aggregates that are captured by the filter are easily apparent.

The port for pouring ink on the container for ink can be open to let ink flow into the chamber. But, the port may remain closed and the ink will not be poured in the port. In such instances the air that is present in the upper part of the ink chamber can switch from the air that is saturated state to the outside air. Particularly when the ink inside the chamber is consumed in large quantities and the proportion of air in the upper side of the ink chamber gets greater, a significant amount of the air that is not saturated is introduced into the ink chamber , and thus the ink in the ink chamber becomes rapidly dissolved. In this case the ink that’s attached to the support within the ink is quickly evaporated and thus a huge quantity of aggregates can be created.

Some features of the invention have the benefit of providing an ink container that can be used to reduce the production of aggregates.

The invention may be realized in the following forms or examples of application.

A sample of an application

According to an aspect of the invention, there is provided an ink container that is adapted to supply an ink composition to an ink jet recording device that includes a recording head for discharging the ink composition, the ink container including an ink chamber that houses the ink composition, the ink chamber including a wall defining the ink chamber and a support connected to an inner wall to support the wall and an ink port for pouring through where the ink composition is being poured into the inkchamber in which, in a use state of the container when the ink chamber is filled with the ink to a maximum of 50% of the volume thereof and the area of the support in contact with the ink composition is smaller than that of the support in contact withatmosphere.

In the ink bottle according to Application Example 1, even though the air which is not in the saturated state enters the chamber for ink, the formation of aggregates resulting from the ink bonded to the support contained in the ink is slowed down and an ink jet recording apparatus has excellent stability in discharge of the composition of ink.

Application Example 2.

Application Example 1 also may contain an area where the gas-liquid interface of the ink composition shrinks when the composition of ink is reduced to fill the chamber.

Application Example 3

The ink container described in Application Example 1 and 2 might have a variety of supports that cross the vertical direction of the state of use.

Application Example 4.

The support’s upper surface may be convex in the vertical direction of an ink container in accordance with any of the Examples 1 through 3. It might also be upwardly convex in the state of use of an inkcontainer.

Application Example 5

In the ink container according to any of Examples 1 to 4, the wall that defines the ink chamber may include a first wall portion formed of a film; and an additional wall that is comprised of a plurality of surfaces formed of materials asidefrom the film. The support could include a first support; and at most the second and an additional support, wherein the first support is attached to the interior of the first wall portion and the inside of the second wall, the secondsupport is connected to the support that is first and the outside of the second wall portion the third support is linked to the insides of two surfaces of the various surfaces that make up the second wall part.

Application Example 6

In the ink container of Application Example 5, a surface shown in the case of the second support looked downwards from the vertical direction could have a side connected to the wall portion of the second and the length of a line that runs parallel to theside in the surface may be shorter than a length of side during the use of the ink container.

Application Example 7

Application Example 5 and 6 may depict a surface when the third support is viewed from the side. The line segment that runs parallel to the surface’s side could be shorter than that of the surface that is being used.

Application Example 8

In the ink container as per to any one of Applications Examples 1-7, posture of the ink container in an active state of the ink container may be the same as that when it is in a pouring state the ink container.

Application Example 9

An ink container as per any of the Examples 1-8 can also contain an support that comes into contact with ink composition.

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