JPH058405A - Ink feeder equipped with a plurality of liquid absorbing components and ink jet recording head equipped therewith - Google Patents

Abstract

PURPOSE:To achieve increase of an ink feedable period by a method wherein a second liquid absorbing component having an ink holding characteristic is provided between a first liquid absorbing component having an ink guiding characteristic which guides ink to a discharge part side and an atmosphere-interconnected part, and parts of the first and the second liquid absorbing components are brought into contact with each other. CONSTITUTION:A partition wall 4 is provided inside an ink housing material 3 by being integrated with the inside of the recording liquid housing material 3, and a partial opening part 4A interconnecting two chambers divided with the partition wall is formed at almost a central part of the partition wall. Further, a feed tube 9 becoming a feed opening of recording liquid to a recording head body 2 is provided to a first chamber 3A of the ink housing material 3 so as to insert its one end part into the first chamber 3A. A sponge 5 as a second absorbing component is housed inside a second chamber 3B of the ink housing material 3, and a fiber material 6 as a first liquid absorbing component equipped with bundled fiber bundle compressed in the same direction is housed inside the first chamber 3A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink supply container applicable to each recording apparatus for recording using liquid ink and a recording head provided with the same, and a copying machine, a facsimile machine, a printer or a composite machine using them. Regarding equipment.

Particularly, the present invention is a particularly effective invention for an ink supply means for stably supplying ink using different liquid absorbing members.

[0003]

2. Description of the Related Art As a conventional ink supply container, as disclosed in U.S. Pat. Nos. 4,095,237 and 4,306,245, a liquid absorbing member may be provided in the entire ink supply container or in a part thereof. It is known to provide. Of these, the latter has a considerably excellent ink supply property because of the shape in which the end of the ink supply pipe communicating with the inkjet head is surrounded by the porous elastic body, and the influence of air replenished into the container is reduced. It is practical in that it has an effect of preventing it.

[0004] On the other hand, as disclosing a configuration diagram in which a material for storing a color material is filled in a closed container,
There is U.S. Pat. No. 4,164,744. Since this is related to the print pen, there is no recognition of the problem of the air coming in according to the ink consumption unlike the ink jet recording.

Further, US Pat. No. 3,967,286, which discloses an example using a plurality of ink absorbers, discloses an ink absorber provided in an ink tank which moves together with a recording head and abutting against the ink absorber. It discloses a wick. However, the present invention does not recognize the problem of air ingress when the ink absorber itself is released to the atmosphere.

Further, US Pat. No. 4,368,478, which discloses that a porous chamber body is provided in a common liquid chamber of an ink storage portion and / or in an ink tank, is disclosed in US Pat. No. 4,368,478. To prevent being stopped
It is disclosed that fibers located upstream of the porous body in the ink supply direction are suspended in the ink. However, the present invention considers the case where bubbles have passed through the ink supply pipe, and does not prevent the inclusion of bubbles in the recording head itself. This is because the present invention does not elucidate how the bubbles are mixed, and in the present invention, when the bubbles enter, they are immediately guided from the ink supply container into the recording head. . Further, since the fibers and fillers are floating in the container, they may be fixed to the inner wall, or the number of ejection ports may increase, or the problem of defective ink supply when driven at high speed may occur.

As described above, in the known technology, generally, a recording head that drives ten or more ejection ports and a 5 kHz
There is no known ink supply container capable of ensuring sufficient ink supply with respect to the above drive frequencies.

In the invention filed in advance (European Patent Application 90310167.3 / 1990), in view of this prior art, the state in which the atmosphere enters the ink supply container with the ink supply affects the ink supply property. The present invention provides an invention relating to an inner wall structure of a container that can be adjusted to a non-existent one and an end position of an ink supply tube. This background art achieves a significant delay in the time when the incoming air is concentrated at the end of the ink supply tube, and is practical and excellent.

Similar to this background art, the present invention solves the problem of air invasion due to ink consumption, and was invented from a viewpoint different from this background art.

That is, (in the present invention), as long as one kind of porous ink absorbing member is used alone in the ink supply container, the inside of the member in the atmosphere or between the member and the inner wall surface of the container is It was pointed out that there is a limit to delaying the time when the air is transmitted and concentrated at the ink outlet (viewed from the ink supply container), and there is also a limit to the reduction of the ink remaining amount.

[0011]

The invention according to claim 1 has been made in view of this novel point of view, and the air that enters through the inner wall surface of the ink container by using different liquid absorbing members. Block or delay the movement of
The main purpose is to achieve an increase in the ink supplyable period.

The present invention provides an ink supply container capable of minimizing the remaining amount of ink when a sponge-like ink absorber is placed in a given ink container.

Another object of the present invention is to reliably eliminate the above-mentioned entering air when viewed from the recording head side by making the plurality of liquid absorbing members have a relative structural relationship more suitable for supplying ink to the ink jet recording head. An object of the present invention is to provide an inkjet recording head that can perform good recording.

Another object of the present invention is to provide a method of filling ink in an ink supply container or a method of refilling when reusing, which can optimize the initial state of a plurality of liquid absorbing members.

Still another object of the present invention is to provide a mounting method for better mounting a plurality of liquid absorbing members in an ink supply container before ink filling.

Further, according to the present invention, the structure of the ink discharge portion of the ink supply container is unpredictable so that recording by a multi-nozzle recording head having 10 or more ejection ports can be ensured, and paper or paper (EN) A device capable of ensuring recording of a recording device for performing high-speed recording on cloth or various recording materials.

[0017]

SUMMARY OF THE INVENTION In summary, the present invention as set forth in claim 1 is provided with the discharge portion for discharging the ink inside and the atmosphere communicating portion for communicating the inside with the atmosphere at different positions. An ink supply container having an ink guiding characteristic for guiding the ink contained therein to the discharge portion side
A first liquid absorbing member and a second liquid absorbing member having an ink holding characteristic for holding the ink contained therein, the first liquid absorbing member being between the atmosphere communicating portion and the first liquid absorbing member; The liquid absorbing members are in contact with each other at least partially.

Here, the following can be done.

In the ink supply container, a second region for accommodating the second liquid absorbing member and directly communicating with the atmosphere communicating portion, and a first region for accommodating the first liquid absorbing member are provided at the contact portion. The walls other than those opened are distinguished, and the first liquid absorbing member has a large number of fibrous bodies compressed in the first region,
The second liquid absorbing member has a continuous porous elastic body that is compressed in the second region.

Further, the first liquid absorbing member is provided with a deformable resin surrounding member having an opening for allowing the contact, and in a direction intersecting with the length direction in the resin surrounding member. And a plurality of fibrous bodies that are compressed, and the first liquid absorbent member has a plurality of fibrous bodies that are compressed in a direction intersecting the length direction and is in contact with the second liquid absorbent member. It is preferable that the contact portion is a direction intersecting the fiber direction of the fibrous body.

It is preferable that the contact portion is closer to the center than the end portion of the length component of the fibrous body.

It is preferable that the discharge portion is located at a position where the fiber end portion is compressed in the fiber direction of the fibrous body, and is located closer to the center side than the end portion of the length component of the fibrous body.

The first liquid absorbing member has a deformable resin surrounding member having an opening for holding the plurality of fibrous bodies under compression and allowing the contact, and the first liquid absorbing member. It is preferably loaded in the ink supply container in a state of being brought into contact with.

It is preferable to include a step of inserting an end portion of a supply member for ink filling near the contact portion to supply the filled ink.

The second liquid-absorbing member is a continuous porous elastic body that is compressed and loaded, and the first liquid-absorbing member holds a large number of compressed fibrous bodies and retains them in a compressed state. It is preferable that a deformable resin surrounding member having an opening for allowing contact is provided, and the end of the supply member is located on the continuous porous elastic body side to perform the ink filling.

The first liquid-absorbing member has a characteristic that it expands in volume by releasing the ink and absorbs the ink, and the second liquid-absorbing member supplies the ink to the first liquid-absorbing member. As a result, it has the property of absorbing outside air and expanding in volume,
It is preferable that the capillary action force of the first liquid absorbing member is superior to the capillary action force of the second liquid absorbing member.

It is preferable that an ink guide tube communicating with a recording head of a recording system in which bubbles are formed by thermal energy can be connected to the discharge portion of the ink supply container.

According to a twelfth aspect of the present invention, there is provided an ink jet recording head which is attachable to and detachable from a recording device, and which comprises a large number of ejection portions for ejecting ink and a common liquid chamber for supplying ink to the ejection portions. The discharge unit includes a head unit, an ink guide member that supplies ink to the common liquid chamber, and an ink supply unit that is connected to the guide member. The supply unit discharges the internal ink to the end of the guide member. A first liquid absorbing member having an ink guiding characteristic for guiding the ink accommodated in the inside to the discharge part side, the atmosphere communicating part, the atmosphere communicating part, and the atmosphere communicating part. At least a part of the second liquid absorbing member having an ink holding characteristic for holding the ink contained therein and between the first liquid absorbing member and the first liquid absorbing member is provided in contact with each other.

Here, the following can be done.

In the ink supply container, a second region for accommodating the second liquid absorbing member and directly communicating with the atmosphere communicating portion, and a first region for accommodating the first liquid absorbing member, the contact portion are provided. The first liquid absorbing member is a large number of fibrous bodies that are compressed in the first region except that they are opened, and are divided by the wall.
It is preferable that the second liquid absorbing member is a continuous porous elastic body that is compressed in the second region.

The first liquid absorbing member includes a deformable resin surrounding member having an opening for allowing the contact.
It is preferable to have a large number of fibrous bodies compressed in a direction intersecting with the lengthwise direction inside the resin surrounding member.

The first liquid absorbing member has a large number of fibrous bodies which are compressed in a direction intersecting with the longitudinal direction, and the contact portion which comes into contact with the second liquid absorbing member is in the fiber direction of the fibrous body. It is preferable that the directions are intersecting.

It is preferable that the contact portion is closer to the center than the end portion of the length component of the fibrous body.

It is preferable that the discharge portion is located at a position where the fiber end portion is compressed with respect to the fiber direction of the fibrous body, and is located closer to the center than the end portion of the length component of the fibrous body.

The first liquid absorbing member has a deformable resin surrounding member having an opening for holding the plurality of fibrous bodies under compression and allowing the contact, and the second liquid absorbing member. It is preferably loaded in the ink supply container in a state of being brought into contact with.

The first liquid-absorbing member has a characteristic that it expands in volume by releasing the ink and absorbs the ink, and the second liquid-absorbing member supplies the ink to the first liquid-absorbing member. Therefore, it is preferable that the first liquid absorbing member has a characteristic of absorbing the outside air and expanding in volume, and the capillary action force of the first liquid absorbing member is superior to the capillary action force of the second liquid absorbing member.

The recording head serves as the multiple ejection unit.
The first liquid absorbing member has ten or more ejection ports, and an electrothermal converter that forms bubbles by film boiling with thermal energy to each of the ejection ports, and a filter is provided at an end of the ink guide member. As a plurality of fibrous bodies compressed in a direction intersecting with the longitudinal direction of the fibers, the resin surrounding member having openings for allowing the fibrous bodies to come into contact with the second liquid absorbing member. It is preferable that the end filter of the ink guide member is inserted in the fiber length direction inside the resin surrounding member.

The invention as set forth in claim 19 is characterized by including the step of inserting an end portion of a supply member for ink filling into the vicinity of the contact portion to supply the filled ink.

Here, the following can be done.

The second liquid-absorbing member is a continuous porous elastic body that is compression-loaded, and the first liquid-absorbing member compresses and holds a large number of compressed fibrous bodies to bring them into contact with each other. It is preferable to have a deformable resin surrounding member having an opening for enabling the above, and the supply member end portion is located on the continuous porous elastic body side to perform the ink filling.

A twenty-third aspect of the present invention is an ejection portion provided with ten or more ejection ports for ejecting ink, and an electrothermal converter for forming bubbles due to film boiling with thermal energy to each of the ejection ports, and the ejection part. A recording head unit having a common liquid chamber for supplying ink to the ink; an ink guide member for supplying ink to the common liquid chamber and having a filter at the other end; and an ink supply member connected to the guide member. , The supply member discharges the ink inside to the end of the guide member, an atmosphere communication unit provided at a position different from the discharge unit to communicate the inside with the atmosphere, and the ink stored therein. A first liquid absorbent comprising a large number of compressed fibrous bodies having an ink guiding characteristic for guiding and a deformable resin enclosing member having an opening for holding and releasing the large number of fibrous bodies. Member, the atmosphere communicating portion, and the first liquid absorbing portion A continuous porous elastic body which is located between the material and has an ink holding property for holding the ink contained therein, is in close contact with the fibrous body at the opening, and is compressed to form a negative pressure. A second liquid-absorbing member consisting of, and the discharge portion is a position where the end filter of the ink guide member is inserted in the fiber length direction inside the resin surrounding member, and the vicinity of the opening portion. Is characterized in that.

The invention as set forth in claim 24, further comprising: an ejection portion provided with ten or more ejection ports for ejecting ink, and an electrothermal converter for forming bubbles by film boiling with thermal energy to each of the ejection ports. A recording head unit including a common liquid chamber that supplies ink to the ejection unit, an ink guide member that supplies ink to the common liquid chamber and has a filter at the other end, and an ink supply unit connected to the guide member. The supply unit has an atmosphere communication unit that communicates the inside with the atmosphere, a discharge unit that discharges the internal ink to the end portion of the guide member, and an ink guide characteristic that guides the ink stored inside. A first liquid-absorbing member comprising a large number of compressed fibrous bodies and a deformable resin surrounding member having an opening for retaining the large number of fibrous bodies in a compressed state, and the atmosphere communicating portion. Between the first liquid absorbing member and the It has an ink retention property of retaining the contained ink, and is in close contact with the fibrous body at the opening,
A second liquid absorbing member made of a continuous porous elastic body in a compressed state, wherein the discharge portion is a position where the end filter of the ink guiding member is inserted into the resin surrounding member by 3 mm or more in the fiber length direction. And a diameter d that gives a cross-sectional area perpendicular to the ink guide direction near the filter of the guide member,
The diameter D of the first liquid absorbing member, which gives a cross-sectional area perpendicular to the ink guiding direction near the filter, satisfies D ≧ 1.5 × d, and the area of the opening is 100 mm ² or more.

Here, the following can be done.

It is preferable to have a driving means for driving the above electrothermal converters of 10 or more, and the driving means should drive a driving signal corresponding to the recording signal at a frequency of 5 kHz or more.

[0045]

According to the present invention, even if bubbles are generated in the first ink absorber, the bubbles are kept away from the mouth of the supply port by the second ink absorber made of fibrous bodies bundled in the same direction. To be Therefore, since air bubbles do not collect near the mouth of the supply port, ink supply is not interrupted by the air bubbles, and stable ink supply can always be performed.

Further, in the present invention, by arranging a plurality of absorbers having different shapes and materials by the partition wall portion integrated with the inner wall of the container body, the gas moving from one side to the other side as the ink is consumed. The movement of the ink can be delayed, and the occurrence of defective ink supply due to the presence of bubbles or gas can be prevented or significantly delayed. Therefore, the ink consumption rate can be efficiently improved with respect to the retained ink amount.

The second absorber, which controls negative pressure with respect to the ink supply, may be freely deformed or partially changed when the ink is received from the first absorber. In contrast to this case, the present invention achieves stable negative pressure formation and stable ink supply.
Since the negative pressure is stabilized while suppressing the deformation of the absorber, the contact state between the first absorber and the second absorber can be stabilized,
It is possible to prevent movement of air or the like that moves between the absorbers into the second absorber. The partition member used in the present invention,
A sheet or a plate-like body interposed between the second absorbent body and the first absorbent body may be used, and preferably, a resin or aluminum sheet that surrounds most of the second absorbent body (delays movement of air,
Or block).

In the present invention, the bubbles moving to the vicinity of the ink supply pipe opening are kept away from the ink supply pipe opening by the fibrous body. Therefore, the formation of the ink cutoff layer due to the bubbles is surely prevented, so that the ink can be stably supplied. By filling the fibrous body and the porous body into the ink tank almost at the same time, the deformation of the fibrous body can be prevented and the contact area can be stabilized. Ink filling after that is also reliable, and air is prevented from remaining and the ink transmission of the contact portion is surely transmitted.

In the present invention, the absorbent body having a higher absorbing power is covered with the flexible sheet, and the notched step portion is formed in the absorbent body having the lower absorbing power. According to the present invention, an inner wall of a cartridge main body and an ink container are connected to each other by inserting an ink supply pipe for supplying ink to an ink jet unit into the absorber having a low absorption power and pressing the covered absorption body having a high absorption power. The flexible sheet separates the absorber into which the supply pipe port is inserted,
It is possible to prevent air from entering the inkjet unit and ensure ink supply.

In the present invention, at the ink supply pipe port,
Since the bundles of fiber bodies bundled in the same direction are arranged so that the end faces of the bundles come into contact with each other, the ink contained in the bundles of fiber bodies is collected by the ink supply tube mouth portion by the capillary force. Since the bundle of fibrous bodies is covered with the flexible tube, it becomes difficult for air bubbles to enter the tube, and ink is efficiently collected. Therefore, the invasion of air from the ink tank side to the ink supply path is reliably prevented, and the ink can be stably supplied.

According to the present invention, the discharge port of the ink tank is sealed, the vacuum is sucked from the atmosphere opening port to sufficiently raise the vacuum degree of the ink tank, and then the atmosphere opening port is closed. Next, when ink is injected through the injection port, which is a feature of the present invention, it is possible to remove air remaining in the absorber, particularly air remaining in the partition part of the absorber.

Further, in the method of the present invention, a thin tube is inserted into the first absorber through the atmosphere opening port, and ink is injected into the ink tank through the thin tube,
Air that remains in the ink tank is not generated.

[0053]

EXAMPLES Examples of the present invention will be described below.

FIG. 1 is a sectional view showing the construction of an embodiment of the ink jet recording head of the present invention. In FIG. 1, reference numeral 1 is a recording head. The recording head 1 includes a recording head body 2 having an ink ejection function (not shown) (not shown).
And an ink container 3 as a recording liquid absorbing container for supplying recording ink to the recording head body 2 are integrated. The ink container 3 is a container for containing ink therein, and has an internal space inside the first chamber 3A on the head side and a second chamber 3B on the atmosphere communication part side of the container.
A partition wall 4 as a partition member is provided integrally with the inner wall of the recording liquid container 3. In this example, the partition wall 4 is the wall surface portion 12 of the first chamber 3A facing each other.
It is installed so that it is almost parallel to A. A partial opening 4A that connects the two chambers divided by the partition wall 4 is formed in a substantially central portion of the partition wall 4. In addition, in the first chamber 3A of the ink container 3, the recording head body 2
A supply pipe 9 serving as a supply port of the recording liquid to the
It is arranged so as to be inserted into the chamber 3A. A filter 8 for preventing impurities and the like in the ink from entering the ink passage 10 is attached to one end of the supply pipe 9, and the mouth of the other end of the supply pipe 9 is an ink ejection unit 7. . Further, the second chamber 3B is provided with an atmosphere opening hole 11 for communicating the ink container 3 with the atmosphere through a part of the recording head body 2. Then, inside the second chamber 3B of the ink container 3 configured as described above, a sponge 5 as a second liquid absorbing member made of a continuous fine porous material such as polyurethane having elasticity and liquid absorbing property is used. In the first chamber 3A, a fibrous body 6 serving as a first liquid-absorbent member having a fiber bundle of polyester fibers or the like compressed and bundled in the same direction is housed.

One of the important components here is the fiber body 6.
Is in the direction toward the end of the supply pipe 9 of the recording head (may be bent in the middle). This directionality has an advantage that the ink supply property can be made excellent. By compressing a considerable number of fibers (for example, 8000) in the direction intersecting the fiber direction, it becomes possible to exert an extremely small capillary force, which delays the invasion of the air bubbles themselves and at the same time It is possible to obtain the effect of preventing an increase in size. If the fibrous body is compressed within a predetermined range,
Since the ink guiding property increases with the consumption of ink, the replenishing property of the ink into the fibrous body is excellent, and it is possible to achieve long-term ink supply. In this case, even if air bubbles enter, the ink guiding property is superior in each part, so that the air bubbles tend to be substantially removed from the fibrous body. This action is also effective for ink supply.

In this example, the length direction of the bundle of fibers constituting the fibrous body 6 (hereinafter referred to as the fiber direction) is made substantially parallel to the wall surface portion 12A of the first chamber 3A and the wall surface of the partition wall 4.
Both ends of the bundle of fibrous bodies are orthogonal to the above-mentioned both wall surfaces.
It is in firm contact with the other wall parts 12B and 12C of chamber 3A. Further, as shown in the figure, the central portion of one end of the fibrous body 6 is in contact (preferably pressure contact) so as to be orthogonal to one surface of the filter 8 of the supply pipe 9. Further, the partial openings 4A of the partition wall 4 are formed close to each other, although they are separated from the end of the supply pipe 9 by an appropriate distance.

In the ink jet recording head 1 having such a structure, as the ink is ejected from the ink ejecting section 7, the ink is sequentially consumed from the vicinity of the filter 8 at the end of the supply tube 9. That is, since a large number of fibers are bundled in the same direction in the ink held in the second fibrous body 6, a capillary force along the fiber direction acts. Due to this capillary force, the ink rapidly moves along each fiber in the fibrous body 6 to reach the filter 8, and further, from the end portion of the supply pipe 9 to the ink ejection portion 7 where ink ejection means (not shown) exists. Is supplied to. As can be understood from this action, if ink is reliably supplied to the fibrous body 6, excellent ink supply can be performed to the recording head.

For example, if the recording head is positioned downward in the gravity direction at least during recording, ink may be supplied from above to the recording head by the fibrous body. In the case of this configuration, the ink container may be closed from the atmosphere.

Returning to the embodiment of FIG. 1, the ink contained in the sponge 5 in the second chamber 3B due to the negative pressure of the sponge passes through the partial opening 4A of the partition wall 4 to the first chamber. It is supplied to the contact portion of the fibrous body 6 in 3A and is similarly consumed.
Simultaneously with the consumption of these inks, air enters the second chamber 3B from the atmosphere opening port 11 to avoid the pressure change state of both the first chamber 3A and the second chamber 3B, and the ink supply is continued. Surely done.

In FIG. 1, comparing the relative characteristics of the fibrous body 6 and the sponge 5, the following are preferable conditions.

First, the fibrous body 6 directly supplies ink to the recording head. The sponge 5 is located between the fibrous body and the atmosphere communicating portion. Secondly, the fibrous body and the sponge are in contact or pressure contact. These have the advantage that the inflow rate of the gas is delayed with respect to the outside air entering the ink supply container, and the ink in the container can be supplied to the recording head more efficiently.

Thirdly, the fibrous body 6 is superior to the sponge 5 in all of the capillary force, the ink absorbing property, and the air removing force. This makes it easier for air to enter the inside of the sponge 5 or between the sponge and the inner wall, and the time at which the air reaches the first chamber 3A can be significantly delayed. Therefore, the remaining amount of ink that is wasted in the ink container can be made small.

Here, the effects common to the present embodiment and the embodiments to be described later will be better understood by comparing them with the conventional problems.

It is conventionally known that when a single sponge is compressed and filled in the ink supply container, the air moves into the sponge due to the negative pressure of the sponge. However, before moving to the inside of the sponge, the air travels along the inner wall of the container and enters each part immediately after the ink is used, and reaches the recording head side. The air that has once progressed becomes a bubble state, becomes larger, and deteriorates the ink supply characteristics. Even if air is sucked from the recording head discharge port side to recover this characteristic, temporary recovery can be performed at the expense of a large amount of ink loss, and this problem will reoccur. Will end up.

In the present embodiment and the following embodiments, it has been confirmed that the occurrence of this problem itself can be significantly delayed and almost never occur, and it can be recognized that this is an excellent effect.

Further, in this example, since the sponge 5 and the fibrous body 6 are in contact with each other through the partial opening 4A, the ink can be smoothly moved from the sponge 5 to the fibrous body 6.

More preferable conditions for the relationship between the sponge 5 and the fibrous body 6 in the opening 4A will be described. In this example, since the opening 4A is formed by the inner wall 4 of the container, the opening itself is formed of a rigid body and is not deformed as compared with a sponge or a fibrous body. The thickness of the wall 4 in the opening 4A in the ink supply direction may be as thin as possible, but there is a certain thickness. Therefore, it is preferable that at least one of the sponge 5 and the fibrous body 6 projects into the space. In this example, this opening area is 100m
Since it is set to 200 mm ² which is more than m ² , both project from each other (Fig. 1) and fill the space. The presence of the fibrous body in this space improves the effect of preventing the movement of bubbles from the second chamber 3B into the first chamber 3A, and improves the ability to receive ink from the sponge. Further, the presence of the sponge in this space causes the center of negative pressure at the center of the sponge to slightly shift to the opening 4A side, so that the amount of ink remaining in the sponge can be made smaller.

Further, in this embodiment, the sponge 5 and the fiber body 6 are used.
A more preferable configuration is adopted for the contact state with. 2A and 2B are both included in the present invention, but FIG. 2A is relatively preferable, and this is adopted in this example. In FIG. 2, X indicates the direction in which the ink moves from the sponge to the fibrous body 6, and the bubbles in the sponge also move in this direction X. FIG. 2A shows the fiber body 6
The sponge 5 is brought into contact with the periphery of the bundle, that is, the side portion of the bundled fibrous body.

That is, the ink supply direction from the sponge is the direction intersecting the ink guide direction of the fibers of the fibrous body. With this contact structure, the ink supply from the sponge can be stabilized for a longer period because bubbles are prevented from entering the fibrous body.

As shown in FIG. 2B, the fiber body 6
When the porous body forming the fiber body 6 is brought into contact with the cross section of the bundle of fiber bodies forming the fiber body, the air bubbles contained in the fiber body 6 are restrained in the slight gaps between the fiber bodies of the fiber body bundle. However, since the ink is guided rather than the air bubbles, defective ink supply does not occur and ink can be supplied for a much longer period than before. Therefore, as shown in FIG. 2 (A) rather than FIG. 2 (B).
Is a relatively preferable condition.

Even if air bubbles penetrate into the fibrous body 6, both ends of the bundle of fibrous bodies are separated from the wall surface portion 12B and the wall portion 12B of the first chamber 3A.
Since it is in contact with 12C, the bubbles are on the walls 12B and 12C.
Is pushed to one of. Thereby, the bubbles do not reach the filter 8 of the supply pipe 9 and are removed from the vicinity of the filter 8.

Further, since the partial opening 4A of the partition wall 4 is formed at an appropriate distance from the mouth of the supply pipe 9, the ink of the absorber 5 passes through the partial opening 4A and the absorber 6 is formed.
After being held once, the ink is sent from the mouth of the supply pipe 9 to the ink ejection unit 7. Also from this point, it is possible to reliably prevent the bubbles in the absorber 5 from moving to the ink ejection portion 7.

FIG. 3 is a sectional view showing the structure of another embodiment of the ink jet recording head of the present invention. In FIG. 3, reference numeral 60
Is an ink jet recording head. The structure of the recording head 60 is almost the same as that of the recording head 1 shown in FIG.
The same or similar parts are designated by the same reference numerals and the description thereof will be omitted. In the recording head 60 shown in FIG. 3,
Two partition walls 61 and 62 are provided inside the ink container 3 as partition walls so as to be integrated with the inner wall of the ink container 3, and these partition walls 61 and 62 form an internal space of the container 3 as a first partition wall. One chamber 3A and two second chambers 3B and 3C adjacent in cross section so as to surround the first chamber 3A with partition walls 61 and 62 as partition wall portions on both sides of the first chamber 3A.
(Rooms 3B and 3C are one room). Partial openings 61A and 62A are provided in substantially central portions of the partition walls 61 and 62, respectively. Also, the first room
Similar to the previous embodiment, one end of the supply pipe 9 connected to the ink passage 10 and the ink ejection portion 7 is inserted into the interior of 3A so as to be parallel to the wall surfaces of both partition walls 61 and 62. A filter 8 is attached to the mouth of one end of the supply pipe 9. In the first chamber 3A as described above, the fiber direction of the fiber body 6 is parallel to the wall surfaces of both the partition walls 61 and 62, and the absorbent body is provided on one surface of the filter 8 at the mouth of the supply pipe 9. It is arranged so that the central portion of one end of the bundle of fibrous bodies abuts. A sponge 5 is filled inside the second chambers 3B and 3C described above. In this example, in the sectional view, the atmosphere opening port 11 is provided only in the second chamber 3B of the two second chambers.
However, when these are made into two chambers, the opening 11 is provided in both chambers 3B and 3C. Also,
Also in this example, the first absorber 5 and the second absorber 6 are in contact with each other through the two partial openings 61A and 62A, so that the ink can be smoothly supplied from the absorber 5 to the absorber 6. It is supposed to be done.

Even in the liquid jet recording head 60 having such a structure, as ink is ejected from the ink ejecting section 7, ink is sequentially consumed from the vicinity of the filter 8 at the mouth of the supply tube 9. That is, since the fiber bodies 6 are bundled in the same direction, a capillary force along the fiber direction acts. Due to this capillary force, the ink rapidly moves along the fibrous body, reaches the filter 8, and is further delivered from the mouth of the supply pipe 9 to the ink ejection unit 7 by an ink ejection unit (not shown). In addition, the ink contained in the first absorber 5 in the second chambers 3B and 3C is stored in the partial openings 61 of the partition walls 61 and 62.
It is supplied to the second absorber 6 in the first chamber 3A through A and 62A, and is similarly consumed. Simultaneously with the consumption of these inks, air enters the second chamber 3B from the atmosphere opening port 11 to avoid the pressure change state of the first chamber 3A and the second chambers 3B and 3C, and to reliably supply the ink. Done.

In particular, in this example, the opening area of the partial opening can be made larger than in the case of the previous embodiment, so that there is an advantage that the ink can be efficiently supplied from the sponge 5 to the fibrous body 6.

Also in this example, the partial opening 61A
Since the sponge 5 and the fibrous body 6 are in contact with each other through 62 and 62A, the ink can be smoothly moved. The contact between the fibrous body 6 and the sponge 5 at two locations is the same as in FIG. 2 (A).

Further, in each of the above-described embodiments, the partition member integrated with the inner wall of the ink container is constituted by the partition wall 4 or the partition walls 61 and 62, but it is joined to the inner ribs or inner surfaces of the ink container. You may comprise by the member etc.

Further, a deformable elastic sheet may be joined as a partition member to the ink tank.
In this case, there is an advantage that the elastic sheet can be prevented from being disturbed by the displacement of the ink holding member itself due to the displacement of the ink in the ink tank, the presence of ink, the environment such as temperature, and the like. .

Furthermore, the partition wall portion is formed into a substantially cylindrical shape, the fiber bundle is disposed inside the partition wall portion, and the elastic and liquid absorbing porous body is disposed between the partition wall portion and the ink storage container. It can also be configured.

4 (A), (B), and FIG. 5, the above-mentioned partition member may be a sheet which is not fixed to the inner wall of the ink container, although it may be integrated with the fibrous body or the absorbent body. It is explanatory drawing of the Example used.

In FIGS. 4A, 4B, and 5, the fibrous body and the sponge that control the negative pressure with respect to the ink supply are freely deformed or partially changed when receiving the ink. There is. In this example, in this case, stable negative pressure formation and stable ink supply are achieved. Since the partition member suppresses the deformation of the fibrous body, the negative pressure is stabilized. The contact state between the sponge and the fibrous body can be stabilized, and movement of air that moves between different liquid absorbing members can be prevented. The partition member used in the present invention may be a sheet or a plate-like member interposed between the second absorbent body and the first absorbent body, and is preferably a resin or aluminum sheet (air sheet) surrounding most of the fibrous body. Slow or block the movement of the).

FIGS. 4A and 4B are a sectional view and a perspective view of an ink tank according to an embodiment of the sheet-like partition member of the present invention. In the figure, reference numeral 1 indicates an ink tank of the present invention, and the inside of this ink tank 1A has a partial opening 40A.
It is divided into two by a partition member 40 having. In the ink discharge portion of the ink tank, the portion (one compartment) to which the communication pipe 9 is connected is filled with the fibrous body 6. The other part (the other compartment) is filled with the elastic liquid-absorbing porous body 4, and an opening 11 to the atmosphere is formed in this part. The partition member 40 is a flexible sheet, and polyethylene is used in this example. Ink is discharged from the tube 9 in order to use the ink, but naturally, the amount of ink inside the ink tank 1 is reduced. The replacement of air and ink for this replenishment is performed from the atmosphere opening port 11. However, the tube 5 supplying ink is separated by the partition member 40.
The ink is always kept dense around the tube 9 due to the capillary action of the fibrous body 6, and the ink supply is stabilized. Further, since the partition member 40 is a flexible sheet, it can flexibly respond to changes in the internal pressure state between the two members 5 and 6 due to changes in the remaining ink amount, and It has the effect of keeping the contact stable.

The guide direction of the fibrous body adopted in FIGS. 4A and 4B and the ink supply direction from the sponge porous body are the same as those in FIG. 2A because they intersect each other. The elastic porous body is normally compressed and filled in the tank, and tends to expand in volume when air is absorbed therein instead of supplying ink. On the other hand, in the fibrous body, the space between the fibers spreads due to ink absorption, and conversely, when the ink is supplied, the space between the fibers shrinks. Therefore, even if the fibrous body makes a slight volume change, the porous body changes so as to increase the pressing force in the direction intersecting with the fiber direction of the fibrous body as ink is supplied to the fibrous body. This change not only improves the contact with each other, but also maintains the excellent capillary force of the fibrous body. Therefore, the ink supply in the ink tank will be stable for a long period of time.

FIG. 5 is an exploded view of the ink tank 1A shown in FIGS. 4A and 4B applied to a BJ cartridge BC01 manufactured by Canon Inc. As described in detail in FIGS. 10 to 12 below,
Only the main parts are explained here. ・ Ink cartridge IJC
Inkjet unit IJ
The U and inkjet head IJH are integrated. The partition member 40 having the above-mentioned fiber bundle portion and the opening 40A and the porous body 900 are pressed into the cartridge body 1000 in this order at the same time. The ink is supplied from the tank portion to the head IJH by being supplied to the ink receiving port 1500 of the common liquid chamber by the ink conduit 1600 via the ink supply pipe 2200 penetrating the supply port 1200. The inkjet head IJH is a multi-nozzle type head that forms bubbles by thermal energy and ejects ink droplets as described later, and performs on-demand recording by high frequency driving.

Therefore, by applying the above-mentioned ink tank 1A, the ink in the ink tank can be stably supplied to the head, so that the recording failure can be prevented and the bubble formation due to the boiling of the film for ejection can be stabilized.

In the above example, the flexible sheet is used, but the same effect can be obtained by using the flexible tube surrounding the fibrous body shown in FIGS. In particular, it is preferable that the fibrous body is in a pre-compressed state in a tubular shape because the fibrous body can be easily loaded into the ink tank.

As described above, in the embodiments of FIGS. 4 and 5, the second absorber, which controls the negative pressure with respect to the ink supply, is freely deformed when the ink is received from the first absorber. In this case, stable negative pressure formation and stable ink supply are achieved in the case where a partial fluctuation state may occur. In the present invention, the partition member stabilizes the negative pressure while suppressing the deformation of the second absorber, so that the contact state between the first absorber and the second absorber can be stabilized, and It is possible to prevent movement of air or the like that moves between the bodies into the second absorber.

6 to 8 illustrate an embodiment of an ink tank using a fibrous body surrounding member. Figure 6
Since the fibrous bodies in to 8 are evenly distributed to the ink discharging portion, there is an advantage that the ink supply property of the fibrous body is made to uniformly act on the ink discharging portion.

In this example, a more preferable method of loading two different liquid absorbing members in the ink tank will be described.

That is, by filling the ink tank with the fibrous body and the porous body almost at the same time, the deformation of the fibrous body can be prevented and the contact area can be stabilized. Ink filling after that is also reliable, and air can be prevented from remaining and ink can be reliably transmitted to the contact portion.

FIG. 6 shows an exploded view of the ink tank. In this figure, the porous body 900 is tapered so that the corners of the fibrous body are stored in the tank unlike the above-described embodiment. The opening 904 of the cylindrical partition member comes into contact with the tapered portion, and the adhesion with the fibrous body 902 can be improved.

Reference numeral 900 represents a porous body that holds ink, 902 represents a fibrous body that can always absorb a fixed amount of ink, and 903 represents a fibrous body.
A tube made of a flexible material as a partition member that holds and fixes 902 and presses against the porous body 900, and 904 is a tube 903 that supplies ink from the porous body 901 to the fibrous body 902.
And an ink supply port as an opening provided in the.

In FIG. 7, the absorber group 901 shown in FIG. 6 is housed in the ink tank 1000, and the ink supply pipe 2200 of the ink jet unit IJU is used as an ink discharge part.
It is a figure which shows the state inserted in.

Here, the porous body 900 is composed of a porous body such as polyurethane having ink holding power,
It is preferable to have an inclined portion or a concave portion for deforming. The contact between the porous body 900 and the fibrous body 902 is preferably polyhedral or curved surface rather than single surface,
It is preferable that the contact form is such that the ink supply state is stable and effective. In addition, the fibrous body 902 allows the ink to pass through the porous body 90.
Ink supply tube 2200 from 0 to inkjet unit IJU
It can always absorb a sufficient amount of ink to be supplied to, and is composed of a fibrous body such as polyester fiber having a high capillary force that prevents air from being mixed. Further, the arrangement direction of the fibrous body 902 is aligned so as to be parallel to the extending direction of the inserted ink supply tube 2200, and the outer side of the bundle of fibrous bodies is covered with a flexible tube 903 such as polyethylene.

With such a configuration, ink can be smoothly supplied to the ink jet unit IJU, and it is also possible to prevent the air coming along the inner wall of the ink tank IT from being mixed with the absorber. Is. Further, the ink supply pipe 2200 is, as shown in FIG.
If it is inserted in the 902, of course it can fulfill its function,
Ink supply pipe 2200 to the fiber body 902 to prevent ink leakage
If the mouth part of the
A stable supply of ink is also possible.

Further, it is preferable to simultaneously fill the ink tank IT with the porous body 901 and the fibrous body 902. The simultaneous filling prevents deformation of the fibrous body 902,
It is possible to achieve stabilization of the contact area between the 901 and the fibrous body 902, prevent the dispersion of the ink after the filling, prevent the air from remaining, and reliably perform the ink transfer in the contact area.

By adopting such a configuration, a fixed amount of ink can be always absorbed in the fibrous body 902 around the mouth of the ink supply pipe 2200 for supplying ink to the ink jet unit IJU. The ink supply to the inkjet unit IJU will not be insufficient.
Further, since the fibrous body 902 absorbs the ink by the capillary force, the absorbing power does not change the characteristics due to the surrounding temperature, humidity, atmospheric pressure, impact, and the like. Therefore, it is possible to prevent a shortage of ink supply due to a change in ink holding characteristics caused by a change in environmental conditions, which has been a problem in ink holding by a conventional absorber.

FIG. 8 is a view showing an ink container of another embodiment according to the present invention. The fibrous body 902 in this example has a prismatic shape. For this reason, the porous body 900 is provided with a notch formed by notching the corner portion into a prismatic shape, and the fibrous body 902 with a surrounding partition member is inserted into this notch. As described above, even if the cross section of the fiber bundle of the fibrous body 902 is rectangular, the ink supply path is the same, and the function to be performed is the same as that of the above-described embodiment.

As described above, according to this embodiment,
A fibrous body is present between the inner wall of the container body and the porous body,
Since the fibrous body can be stably arranged with respect to the porous body, defective ink supply can be prevented. By using the porous body having a shape surrounding the fibrous body, the ink holding power and the feeding power to the contact area can be enhanced to achieve more efficient feeding.

Further, since the fibrous body is used, it is possible to prevent the formation of an air layer between the ink absorber and the ink supply pipe of the recording head, so that it is possible to surely prevent the image deterioration and the ejection failure. Can be prevented. Therefore, it is possible to greatly contribute to reduction of extra ink consumption associated with the recovery operation and improvement of reliability of the inkjet cartridge. This greatly contributes to the spread of the cartridge type recording head and further to the spread of the inkjet recording.

A more preferable embodiment of the ink jet recording head and its apparatus will be described with reference to FIGS. 9 to 14. Summarizing the features of this embodiment that are added to the above-described embodiments, the recording liquid absorber in the recording liquid storage portion is located on the recording liquid supply pipe side (ink discharge side) and has a large liquid absorption property. And a second absorbent body having a liquid absorbency smaller than that of the first absorbent body. The first absorbent body and the second absorbent body are composed of the first absorbent body and the second absorbent body. The liquid jet recording head is characterized in that at least partial contact is made so that a negative pressure of the recording liquid is generated.

FIG. 9 shows an ink tank constituting the liquid jet recording head of the present invention. Before explaining the structure of the ink tank of FIG. 9, the present invention will be described with reference to FIGS. 10 to 12. Each of the preferable inkjet unit IJU, the inkjet head IJH, the ink tank IT, the inkjet cartridge IJC, the inkjet recording apparatus main body IJRA, and the carriage HC, which are implemented or applied, and the respective relationships will be described.

Inkjet cartridge IJC in this example
As can be seen from the perspective view of FIG. 11, the ink storage ratio is high, and the tip of the inkjet unit IJU slightly protrudes from the front surface of the ink tank IT. This inkjet cartridge IJC
Is a type that is fixed and supported by positioning means and electric contacts (not shown) of the carriage HC mounted on the ink jet recording apparatus main body IJRA, and that is replaceable and refillable with the carriage HC. .

(I) Inkjet Unit IJU Structure Description The inkjet unit IJU is a unit of the type that records by using an electrothermal converter that generates thermal energy for causing film boiling to ink in response to an electrical signal. Is.

In FIG. 10, reference numeral 100 denotes an electrothermal converter (discharge heater) arranged in a plurality of rows on a Si substrate, and electric wiring such as Al for supplying electric power to the electrothermal converter, which are formed by a film forming technique. It is a heater board consisting of. 200 is the heater board 100
A wiring board corresponding to the wiring of the heater board 100 (which is connected by, for example, wire bonding), and a pad 201 which is located at the end of this wiring and receives an electric signal from the main body device. .

Reference numeral 1300 is a grooved top plate provided with a partition wall for partitioning a plurality of ink flow paths and a common liquid chamber for accommodating ink to each ink flow path,
An ink receiving port 1500 that receives the ink supplied from the ink tank IT and is introduced into the common liquid chamber described above, and an orifice plate 400 that has a plurality of ejection ports corresponding to the respective ink flow paths are integrally molded. Polysulfone is preferable as the integral molding material, but other molding resin materials may be used.

Reference numeral 300 denotes a support member made of, for example, a metal that supports the back surface of the wiring board 200 on a flat surface, and serves as a bottom plate of the inkjet unit. 500 is a presser spring, which is M-shaped and has an M
Press the common liquid chamber with a light pressure at the center of the letter and at the same time the front part 50
At 1, a part of the liquid passage, preferably a region near the discharge port, is concentratedly pressed by the linear pressure. Pressing the heater board 100 and the top plate 1300, the legs of the spring are engaged with the back surface side of the support body 300 through the holes 3121 of the support body 300 so that they are sandwiched and engaged with each other, thereby holding down the work piece. Spring 500 and its front part
Heater board 100 and top plate 1300 due to the concentrated bias of 501
Clamp and fix. In addition, the support 300 is an ink tank.
Positioning holes 312, 1900, 2000 that engage the two positioning protrusions 1012 of the IT and the protrusion 1800 for positioning and holding the fusion
In addition to the above, the rear surface has projections 2500 and 2600 for positioning the apparatus main body IJRA with respect to the carriage HC. In addition, the support 300 also has a hole 320 that allows an ink supply pipe 2200 (described later) that allows ink to be supplied from the ink tank to pass therethrough. The wiring board 200 is attached to the support 300 by adhering it with an adhesive or the like. In addition, the recesses 2400 and 2400 of the support 300 are respectively the positioning protrusions 2500 and 2600.
In the assembled ink jet cartridge IJC (Fig. 11), which is provided in the vicinity of, the extension point of the head tip region formed by a plurality of parallel grooves 3000, 3001 on the three sides of the ink jet cartridge IJC is Unwanted objects such as protrusions 2500 and 2600
It is located so as not to reach. This parallel groove 3000
Are formed. As can be seen in FIG. 11, the lid member 800 forms the outer wall of the inkjet cartridge IJC and, together with the ink tank, the inkjet unit IJU.
To form a space for storing. Also, this parallel groove 30
The ink supply member 600 in which 01 is formed has an ink conduit 1600 continuous with the ink supply pipe 2200 described above.
The side is formed as a fixed cantilever, and a sealing pin 602 is inserted to secure the capillarity between the fixed side of the ink conduit and the ink supply tube 2200. In addition, 601 is a packing for connecting and sealing the ink tank IT and the supply pipe 2200, 700
Is a filter provided at the end of the supply pipe on the tank side.

Since the ink supply member 600 is molded, the ink supply member 600 is inexpensive, has a high positional accuracy, and is free from a decrease in accuracy in forming and manufacturing.
With 00, the pressure contact state of the conduit 1600 to the ink receiving port 1500 can be stabilized even in mass production. In this example, by simply pouring the sealing adhesive from the ink supply member side under this pressure contact state, a more complete communication state can be surely obtained. The support of the ink supply member 600
For fixing to the support 300, the back side pins (not shown) of the ink supply member 600 to the holes 1901 and 1902 of the support 300 are supported.
Supports 30 are extended through 300 holes 1901, 1902
This can be easily performed by heat-sealing the portion of the 0 that protrudes to the back surface side. The slightly protruding area of the heat-sealed back surface is the ink jet unit IJU of the ink tank IT.
Since the mounting surface is housed in the recess (not shown) on the side wall surface, the positioning surface of the unit IJU can be accurately obtained.

(Ii) Ink tank IT configuration explanation The ink tank is composed of a cartridge body 1000, a first ink absorber group 900, a second ink absorber 902 and an ink absorber group 90.
After inserting 1 from the side of the cartridge body 1000 opposite to the unit IJU mounting surface, the lid member that seals this
It is composed of 1100 and.

The second absorber 902 is covered with a flexible sheet 903 having an opening (not shown) in a part thereof, and the opening is brought into pressure contact with the first ink absorber 900. Are arranged in the cartridge body 1000. A reference numeral 1200 is a supply port for supplying ink to the unit IJU composed of the above-mentioned respective parts 100 to 600, and the ink is injected from the supply port 1200 in a step before arranging the unit in the portion 1010 of the cartridge body 1000. As a result, it is also an inlet for impregnating the absorber 900 with ink.

In this embodiment, the ink supply portion is the atmosphere communication port and this supply port, but ribs in the main body 1000 for good ink supply from the ink absorber
The in-tank air existence region formed by the 2300 and the partial ribs 2500, 2400 of the lid member 1100 is formed continuously from the atmosphere communication port 1401 side and over the corner area farthest from the ink supply port 1200. The rib 1000 has four ribs parallel to the carriage movement direction on the rear surface of the main body 1000 of the ink tank to prevent the absorber from adhering to the rear surface. In addition, the partial ribs 2400 and 2500 are the same as the rib 10
It is provided on the inner surface of the lid member 1100 which is an extension corresponding to 00, but unlike the rib 1000, it is in a divided state to increase the space where air exists compared to the former.
The partial ribs 2500 and 2400 are distributed over the surface of half or less of the total area of the lid member 1000. By these ribs, the ink in the corner area farthest from the tank supply port 1200 of the ink absorber is made more stable, but the supply port 12 is surely provided.
I was able to lead to the 00 side by capillary force. 1401 is an atmosphere communication port provided in the lid member for communicating the inside of the cartridge with the atmosphere. Reference numeral 1400 denotes a liquid stop member arranged inside the atmosphere communication port 1401. This prevents ink leakage from the atmosphere communication port 1401.

Since the ink storage space of the ink tank IT described above has a rectangular parallelepiped shape and has long sides on the side surfaces, the rib arrangement configuration described above is particularly effective, but it is long in the carriage movement direction. In the case of having a side or a cube, it is possible to stabilize the ink supply from the ink absorber group 900 by providing a rib on the entire lid member 1100.
The rectangular parallelepiped shape is suitable for storing ink in a limited space as much as possible, but in order to use the stored ink for recording without waste, as described above, the corner area is It is important to provide ribs that can perform the above-mentioned functions in the two adjacent surface areas. Further, the inner ribs of the ink tank IT in the present embodiment are arranged in a substantially uniform distribution in the thickness direction of the rectangular parallelepiped ink absorber. This configuration is an important configuration because the ink residual amount can be made almost zero while the atmospheric pressure distribution is made uniform with respect to the ink consumption of the entire absorber. Further, to describe the technical idea of the rib arrangement in detail, when an arc having a long side as a radius is drawn around the position where the ink supply port 1200 of the ink tank is projected on the rectangular upper surface of the rectangular parallelepiped, For the absorber located outside the arc,
It is important to dispose the ribs on the surface outside the arc so that the atmospheric pressure state can be given early. In this case, the atmosphere communication port of the tank is not limited to this example as long as the atmosphere can be introduced into the rib disposition region.

When assembled as an ink jet cartridge IJC, ink is supplied from the inside of the cartridge through the supply port 12
00, a hole 320 provided in the support 300 and an inlet provided on the back side of the supply tank 600 to be supplied into the supply tank 600, and after passing through the inside, an appropriate supply pipe and a ceiling are provided from an outlet. It flows into the common liquid chamber through the ink inlet 1500 of the plate 400. A packing made of, for example, silicone rubber or butyl rubber is arranged in the connection portion for ink communication described above, and sealing is performed by this to secure an ink supply path.

In this embodiment, the top plate 1300 is made of a resin such as polysulfone, polyether sulfone, polyphenylene oxide, polypropylene, etc., which has excellent ink resistance, and is integrally molded in the mold together with the orifice plate 400. I am doing it.

As described above, since the integrally molded parts are the ink supply member 600, the top plate / orifice plate integrated, and the ink tank body 1000, not only the assembling accuracy becomes a high level, but also extremely effective for improving the quality of mass production. Is. Also, since the number of parts can be reduced compared to the conventional one,
It is possible to reliably exhibit excellent desired characteristics.

(Iv) Outline Description of Apparatus Main Body FIG. 12 shows an inkjet recording apparatus IJRA to which the present invention is applied.
In the external view of, the carriage HC that engages with the spiral groove 5004 of the lead screw 5005 that rotates via the driving force transmission gears 50111 and 5009 in conjunction with the forward and reverse rotation of the drive motor 5013 is a pin (not shown). And is reciprocated in the directions of arrows a and b. A paper pressing plate 5002 presses the paper against the platen 5000 in the carriage movement direction. Reference numerals 5007 and 5008 denote home position detecting means for confirming the presence of the lever 5006 of the carriage in this area by a photo coupler and switching the rotation direction of the motor 5013. Reference numeral 5016 is a member that supports a cap member 5022 that caps the front surface of the recording head. Reference numeral 5015 is a suction unit that sucks the inside of the cap to perform suction recovery of the recording head through the in-cap opening 5023. 50
Reference numeral 17 is a cleaning blade, and 5019 is a member that allows this blade to move in the front-rear direction, and these are supported by a main body support plate 5018. Needless to say, a well-known cleaning blade can be applied to this example instead of this form. Reference numeral 5012 is a lever for starting suction for suction recovery, which moves with the movement of the cam 5020 that engages with the carriage, and the driving force from the drive motor is controlled by known transmission means such as clutch switching. To be done.

The capping, cleaning, and suction recovery are configured so that the desired processing can be performed at their corresponding positions by the action of the lead screw 5005 when the carriage comes to the home position side area.
As long as the desired operation is performed at a known timing, any of these can be applied to this example. Each of the above-described configurations is an excellent invention, either alone or in combination, and shows a preferred configuration example for the present invention.

In FIG. 9, 900 is a first ink absorber and 902 is a second ink absorber. The second ink absorber 902 has a higher ink absorbency than the first ink absorber 900. In this embodiment, the first ink absorber 900 is a urethane absorber, and the second ink absorber 902 is a unidirectional guide polyester fiber. It is the body.

The second ink absorber 902 is covered with a flexible sheet 903 partially having an opening (not shown).

First ink absorber 900 and second ink absorber
902 are arranged so as to be in pressure contact with each other through the opening, and are housed in the ink tank cartridge main body 1000.

13 (A) (B) and FIG. 14 (A) (B) respectively show a first ink absorber 900 and a second ink absorber 902 embodying the present invention.

In FIG. 13, the first ink absorber 900 is
It has a shape (notched step) in which L ₁ L _{2 is} partially cut at its end. The distance L ₁ L ₂ is the second ink absorber in FIG.
In order to bring the 902 into pressure contact with the inner wall of the ink tank, the diameter is smaller than the diameter of the absorber 902. In this embodiment, the diameter of the second ink absorber 901 is 16 mm, and L ₁ = 11 mm and L ₂ = 12 mm. At the same time, the pressure contact between the first ink absorber 900 and the second ink absorber 902 was sufficiently performed at the notched step portion of the first absorber 900.

In FIG. 14, a flexible sheet in which the first ink absorber 900 and the second ink absorber 902 are directly in pressure contact with each other.
The area of the opening 904 of 903 is determined according to the head characteristics and the required supply amount.

In this embodiment, the distance L ₃ is 12 mm and the distance L _{4 is}
Is preferably 16 mm.

If the area of the opening 904 is 100 mm ² or more,
The fibrous body 902 inside surely forms a protruding portion 902A by slightly protruding a part of the side surface from the opening as shown in FIG. 14 (B). This protrusion 902A has the effect of receiving ink and eliminating bubbles as described above.

As described above, according to this embodiment,
When the ink is partially discharged / removed to fill the desired amount of ink after filling the ink, the flexible sheet covering the periphery of the one-way guide fiber body is pressed against the inner wall of the ink tank cartridge, and It is possible to shut off the air that has blown through the ink, prevent air from entering the inkjet unit, and enable stable ink supply.

Further, since the ink is discharged and removed from the absorbent body such as a porous body having a lower absorbency than the one-way guiding fibrous body, the fibrous body is less susceptible to the influence of the disturbance of the ink distribution that occurs when the ink is discharged, As a result, it is possible to prevent air from entering the inkjet unit, and it is possible to smoothly supply ink.

FIG. 15 is for explaining the constitutional relationship of the embodiment of the present invention.

The ink container IT includes a container body 1000A for containing ink and a lid member for closing the opening of the container body.
It is roughly composed of 800A.

One end of an ink supply tube 2200 is inserted into the container body 1000A so as to penetrate one wall surface thereof. The ink supply pipe 2200 serves as an ink supply path for sending the ink held in the container body 1000A to the ink ejection portion of the inkjet head. Inside the container main body 1000A, a first absorber 900 made of a porous material such as polyurethane for holding ink and a bundle 90 of fibrous bodies made of polyester fibers or the like bundled in the same direction.
A second absorber 905, which is formed by covering 2 (not shown) with a tube 903 made of a flexible material such as polyethylene, is filled together in a compressed state. The second absorber 905 has a tube 403 surrounding the first absorber 900 to the second absorber 902.
905 An opening 904 serving as a window for supplying ink to the inside is provided. Tube 903 in second absorber 905
The filling of the fiber bundle 902 into the tube 903 is performed by aligning the fiber direction of the fiber bundle 902 along the length direction of the tube 903, that is, the length direction, and compressing in the direction perpendicular to this direction.

1000B is a seal member for preventing ink leakage. Therefore, through the opening 904 of the tube 903, the fibrous body bundle 902 which is one of the constituent elements of the porous body forming the first absorber 900 and the second absorber 905.
Since the outer surface of the first absorber 900 comes into contact with the outer surface of the second absorber 905, the ink can be reliably supplied from the first absorber 900 to the inside of the second absorber 905. Further, the end portion of the ink supply tube 2200 described above is inserted into the center portion of one end portion of the fiber bundle 902 covered with the tube 903 so as to be pressed, and the end portion is filled inside the container body 1. It is positioned.

In the ink container IT having such a structure,
The opening area S of the opening 904 of the tube 903 described above is 100 mm.
² or more, the tube 903 at one end of the ink supply pipe 2200
By simultaneously satisfying the conditions that the insertion depth L into the inside is 3 mm or more and the inner diameter D of the tube 903 is 1.5 times or more (preferably 2.0 times or more) the inner diameter d of the end portion of the ink supply pipe 5, It was possible to perform stable and highly efficient ink supply without adversely affecting the ejection characteristics of the ejection portion.

These conditions are preferable as conditions for ensuring the effect of the present invention even if there are manufacturing errors and setting errors. Also, by satisfying this condition,
Ink supply that can sufficiently follow high-speed ink consumption can be achieved.

Further, it is preferable that the supply pipe is inserted in the central portion of the fibrous body, and the orientation of the surrounding fibrous body is along the supply pipe. Furthermore, the pipe diameter of the supply pipe is
It is good to concentrate in the range of 10 times or less. Preferably 5
Optimally less than twice.

As described above, in the concentrated ink supply by the fiber bundle, the time when the gas reaches the end of the supply pipe can be sufficiently delayed by the difference of 3 mm or more along the supply pipe direction until almost the end of the ink consumption. .

The contact of 100 mm ² or more between the first absorbent body made of the porous body and the second absorbent body containing the fibrous body can be performed by the first absorbent body even when the environmental change or the ink remaining amount becomes small. It is suitable and a preferable condition for preventing the ink supply path to the second absorber from becoming discontinuous.

16 and 17 illustrate an ink refilling method and a refilling method for reusing the ink in order to more effectively and stably supply the ink from the initial stage in the above-described configuration of the present invention.

According to the present invention, due to the above-mentioned constitution, the ink supply property is superior to the conventional one even if some air bubbles or air are present in the ink container. However, it is preferable that air and air bubbles do not exist near the contact portion between two different ink absorbing members in the initial stage because a more stable effect can be obtained from the initial stage. The following description relates to a method of initializing or refilling the ink so that there is no air or bubbles near the contact portion between the two ink absorbing members.

In order to solve the above problems, the head of the present invention is characterized in that an ink injection port is formed in the ink tank wall in the vicinity of the partial opening between the porous body and the fibrous body. .

According to the above construction, the ejection port of the ink tank is sealed, the vacuum is suctioned from the atmosphere opening port 1401 described above, the degree of vacuum in the ink tank is sufficiently raised, and then the atmosphere opening port is closed. Next, when ink is injected through the injection port, which is a feature of the present invention, it becomes possible to remove the air remaining inside each ink absorbing member, especially the air remaining in the partition between the members.

In order to solve the above-mentioned problems, in the method of the present invention, a thin tube is inserted into the porous body through the atmosphere opening port, and the ink is injected into the ink tank through the thin tube. , So that no air remains in the ink tank.

FIG. 16 is a diagram best representing the features of the present invention. The above-mentioned configurations are all applicable to the configuration of each drawing number, and the above description will be referred to for details. Is omitted.

1000 C is an ink filling inlet provided in the ink tank itself. The injection port 1000C is provided in the vicinity of the opening 904 of the tube 903 surrounding the fibrous body 902 and on the side where the porous body 900 is stored.
When ink is filled from the atmosphere opening port, the tube 903 opens.
Although gas exists near 904, by injecting ink from this injection port 1000C as in this example, the air in the porous absorber easily moves to the atmosphere opening port side.
The ink is filled into the fibrous body through the opening 904, so that the gas can be reliably removed from the contact area for supplying the ink.

In this way, by injecting ink from the ink injecting port 1000C near the opening 904, the amount of residual air can be reduced.

It is preferable that a cap be detachably attached to the ink inlet 1000C. If the cap is attached as described above, it is possible to re-inject the ink, which allows the head to be reused.

FIG. 17 shows an embodiment in which the atmosphere communicating portion 1401 is used without providing the inlet 1000C as shown in FIG. 16, but what is important is to record in the vicinity of the contact portion of different ink absorbing members. Ink is supplied by positioning the injection tip of the liquid filling insertion tube. In this case, the injection tip may be either a porous body or a fibrous body, and ideally, these contact portions are suitable. In the refilling, since there is ink residue at this contact portion, the injection tip for ink filling may be at a position slightly apart from this contact portion as compared with the initial filling. In any case, the ink may be injected in the vicinity of the contact portion when viewed from the entire ink supply container.

As shown in FIG. 17, the thin tube 100 is opened from the atmosphere opening port.
By inserting, the same effect as the effect in the above-mentioned embodiment can be expected.

As described above, in the ink tank including a plurality of absorbers, the ink inlet is located in the vicinity of the partial opening for moving the ink between the absorbers to reduce the residual air in the absorber. be able to.

The absorber on the ink supply side to the head is
Since it is composed of fibers covered with a compression tube, the capillary force is increased, and it is difficult for air to accumulate in the lower part of the filter.

Prior to the adoption of this filling method, the head that had run out of ink in one hour in the accelerated test at 60 ° C. is extended to 16 hours by this filling method.

FIG. 18 is a schematic view of an ink jet recording apparatus using a multi-ejection electrothermal converter in which the present invention is more effective.

In the figure, H is provided with ten or more discharge ports,
An ink jet head having an electrothermal converter EH corresponding to each ejection port and a common liquid chamber CC having a common liquid path communicating with each ejection port, and SP is an ink storage unit that stores ink in the ink storage unit. It is a supply pipe for supplying to. EC
Is a selection circuit for individually or simultaneously driving the electrothermal converters EH, and drives the head having the common electrode in accordance with the driving means DM. RS is a recording signal generator, which includes reading means, communication means, receiver, host computer, and the like. The drive means can drive the electrothermal converter at a drive frequency of 5 kHz or higher by the recording signal RS. Note that Y is the ink supply direction in the supply pipe SP.

The internal structure of the ink supply container in FIG. 18 is one to which all the above-described embodiments are applied.
Is the above-mentioned fibrous body, HM is the above-mentioned surrounding partition member, TH is the opening of the partition member, AH is the atmosphere communication part, ITB is the ink holding part, and the above-mentioned porous body or the ink chamber without the porous body is Is also good.

In this embodiment, the end of the ink supply pipe is tapered, and the filter at the end is inclined with respect to the fiber direction of the fibrous body. Regarding the length of this end inserted into the partition member HM, the shortest length is L ₁ and the longest length is L ₂ .
In this case, to determine the length L described above, (L ₁ +
When L ₂ ) / 2 is the above L, and ( L ₁ + L ₂ ) / 2 ≧ 3 (mm), it is practically effective. It is most preferable that L ₁ ≧ 3 (mm), with the shortest L ₁ corresponding to the above L. In this case, the inner diameter of the supply pipe is perpendicular to the ink supply direction Y,
The inner diameter d is located inside the partition member HM.

In any case, the above S ≧ 100 (mm ² ), d
In addition to the optimum conditions of ≧ 1.5D and L ≧ 3 mm, the above-described embodiments are particularly effective inventions for this device configuration, and exhibit an ink supply ecology that responds sufficiently to the amount of ink consumed.

In the present invention, particularly in the ink jet recording system, a means (for example, an electrothermal converter or a laser beam) for generating heat energy as energy used for ejecting ink is provided. The present invention brings about an excellent effect in a recording head and a recording apparatus of a system in which a change in ink state (film boiling) is caused by energy. This is because such a system can achieve high density recording and high definition recording.

With regard to its typical structure and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4740796.

Furthermore, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the maximum width of a recording medium that can be recorded by the recording apparatus. Such a recording head may have a configuration that satisfies the length by a combination of a plurality of recording heads or a configuration as one recording head integrally formed.

In the present invention, even if bubbles are generated in the first ink absorber, the bubbles are kept away from the mouth of the supply port by the second ink absorber made of fibrous bodies bundled in the same direction. To be Therefore, since air bubbles do not collect near the mouth of the supply port, ink supply is not interrupted by the air bubbles, and stable ink supply can always be performed.

Further, in the present invention, by arranging a plurality of absorbers having different shapes and materials by the partition wall portion integrated with the inner wall of the container body, the gas moving from one to the other as the ink is consumed. The movement of the ink can be delayed, and the occurrence of defective ink supply due to the presence of bubbles or gas can be prevented or significantly delayed. Therefore, the ink consumption rate can be efficiently improved with respect to the retained ink amount.

[0161]

As described above, according to the present invention,
A stable ink supply is ensured, air bubbles are reliably prevented from entering the head, recovery operations that lead to excessive ink consumption are minimized, and the ink retained in the absorber can be used to maximum effect. Is.

Further, according to the present invention, when the second absorber, which controls the negative pressure with respect to the ink supply, is freely deformed or partially changed when the ink is received from the first absorber. On the other hand, stable negative pressure formation and stable ink supply are achieved. In the present invention, the partition member stabilizes the negative pressure while suppressing the deformation of the second absorber, so that the contact state between the first absorber and the second absorber can be stabilized, and It is possible to prevent movement of air or the like that moves between the bodies into the second absorber.

Further, according to the present invention, since the fibrous body is present between the inner wall of the container body and the porous body to enable the stable placement of the fibrous body with respect to the porous body, defective ink supply can be prevented. To be done. By using the porous body having a shape surrounding the fibrous body, the ink holding power and the feeding power to the contact area can be enhanced to achieve more efficient feeding. Further, by using the fibrous body, it is possible to prevent the formation of an air layer between the ink absorber and the ink supply pipe of the recording head, so that it is possible to reliably prevent the occurrence of image deterioration and ejection failure. You can Therefore, it is possible to greatly contribute to reduction of extra ink consumption associated with the recovery operation and improvement of reliability of the inkjet cartridge. This greatly contributes to the spread of the cartridge type recording head and further to the spread of the inkjet recording.

Further, according to the present invention, when the ink is partially discharged / removed in order to obtain a desired ink amount after the ink is filled, the flexible sheet covering the periphery of the one-way guide fiber body is the ink tank cartridge. By being in pressure contact with the inner wall of the ink jet printer, it is possible to shut off the air that has hit the wall, prevent air from entering the ink jet unit, and enable stable ink supply. In addition, since the ink is discharged and removed from the absorber having a lower absorbency than the one-way guiding fibrous body, the second absorber is less susceptible to the disturbance of the ink distribution that occurs when the ink is discharged. Can prevent air from entering
A smooth ink supply is possible.

According to the present invention, the bundle of fibrous bodies bundled in the same direction is arranged at the mouth of the ink supply pipe so that the end faces of the bundle come into contact with each other. It is collected at the mouth of the ink supply tube by the capillary force. Since the bundle of fibrous bodies is covered with the flexible tube, it becomes difficult for air bubbles to enter the tube, and ink is efficiently collected. Therefore, even if the ink is left for a long time, the invasion of air from the ink tank side to the ink supply path is reliably prevented, so that image deterioration and non-ejection are prevented, and the ink supply is stable. You can do it.

According to the present invention, in an ink tank including a plurality of absorbers, the ink injection port is located in the vicinity of a partial opening for moving ink between the absorbers, thereby reducing residual air in the absorber. be able to. The residual air hinders the movement of the ink to the inkjet head unit and prevents the ink from being sent to the unit side, which causes a problem of ink drop. On the other hand, as described above, according to the present invention, it is possible to reduce the remaining air and reduce the frequency of ink drop.

[Brief description of drawings]

FIG. 1 is a sectional view showing the configuration of an embodiment of an ink jet recording head of the present invention.

FIG. 2 is a schematic diagram for explaining the mechanism of air bubble invasion into a bundle of fibrous bodies as an ink guide member used in the present invention, in which (A) the air bubbles cannot infiltrate into the fibrous body bundle. FIG. 3B is a view showing a state, and FIG. 3B is a view showing a state superior to the conventional one, although air bubbles may slightly enter the fiber bundle.

FIG. 3 is a cross-sectional view showing the configuration of another embodiment of the ink jet recording head of the present invention.

4A and 4B are a cross-sectional view and a perspective view of an ink tank in which the present invention is implemented by partitioning a flexible sheet.

FIG. 5 is an exploded perspective view of a replaceable or detachable head having an ink tank structure according to a fourth embodiment.

FIG. 6 is an exploded perspective view showing the internal structure of the ink container in one embodiment using the surrounding member of the present invention.

FIG. 7 is a cross-sectional view showing an arrangement configuration of an absorber and an insertion position of an ink supply tube in the ink storage container shown in FIG.

8 is a schematic configuration diagram showing an internal structure of an ink container in a modified example of the embodiment of FIG. 6 of the present invention.

FIG. 9 is a configuration diagram of an ink tank that constitutes the ink jet head according to the present invention.

FIG. 10 is a configuration diagram of an inkjet cartridge that constitutes a head according to the present invention.

FIG. 11 is a perspective view of an inkjet cartridge.

FIG. 12 is a conceptual diagram of an inkjet recording apparatus.

13A and 13B are configuration diagrams of a first ink absorber embodying the present invention.

14 (A) and (B) are configuration diagrams of a one-way guide fiber body according to the present invention.

FIG. 15 is an explanatory diagram for explaining a more preferable specific structural relationship for carrying out the present invention.

FIG. 16 is an explanatory diagram illustrating an ink tank configuration relating to the ink filling method of the present invention.

FIG. 17 is an explanatory diagram illustrating a main part in the ink filling method of the present invention.

FIG. 18 is a schematic explanatory diagram of a multi-head driving device in which the present invention is more preferably implemented.

[Explanation of symbols]

1 recording head 2 Recording head body 3 Ink container 4 partition walls 5 sponge 6 fibrous bodies 7 Ink ejection section 8 filters 9 supply pipes 10 ink lanes 11 Air release hole 12A, 12B, 12C wall surface 40 Partition member 60 ink jet recording head 61 partition wall 62 partition wall 900 porous body 901 Absorber group 902 Fiber body 903 tubes 904 Ink supply port 1000 ink tank 1200 supply port 1500 ink receptacle 1600 ink conduit 2200 ink supply pipe

   ─────────────────────────────────────────────────── ─── Continued front page    (31) Priority claim number Japanese Patent Application No. 32-329752 (32) Priority Day Hei 2 (1990) November 30 (33) Priority claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 2-329753 (32) Priority Day Hei 2 (1990) November 30 (33) Priority claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 2-329754 (32) Priority Day Hei 2 (1990) November 30 (33) Priority claiming country Japan (JP) (72) Inventor Teruo Arashima             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation (72) Inventor Makiko Kimura             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation (72) Inventor Masaaki Izumida             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation (72) Inventor Shigeaki Tanaka             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation

Claims (25)

[Claims] 1. An ink supply container provided with an ejecting section for ejecting ink inside and an atmosphere communicating section for communicating the inside with the atmosphere at different positions, wherein the ink accommodated inside is ejected to the ejecting section side. A first liquid absorbing member having an ink guiding characteristic for guiding, and a second liquid absorbing member having an ink holding characteristic for holding the ink contained therein, which is located between the atmosphere communicating portion and the first liquid absorbing member. An ink supply container, wherein the first and second liquid absorbing members are in contact with each other at least partially. 2. The ink supply container according to claim 1, wherein the ink supply container includes a second region that accommodates the second liquid absorbing member and directly communicates with the atmosphere communicating portion, and the first liquid absorbing member. The first region to be accommodated is distinguished by its wall except that the contact portion is opened, and the first liquid absorbing member has a large number of compressed fibrous bodies in the first region, and the second region An ink supply container, wherein the liquid absorbing member has a continuous porous elastic body compressed in the second region. 3. The ink supply container according to claim 1, wherein the first liquid absorbing member is a deformable resin surrounding member having an opening for enabling the contact, and the resin surrounding member. An ink supply container having a plurality of fibrous bodies that are compressed in a direction intersecting with each other in a longitudinal direction. 4. The ink supply container according to claim 1, wherein the first liquid absorbing member has a large number of fibrous bodies that are compressed in a direction intersecting with a length direction, and the second liquid absorbing member includes An ink supply container, wherein a contact portion that comes into contact is a direction intersecting a fiber direction of the fibrous body. 5. The ink supply container according to claim 4, wherein the contact portion is closer to the center side than the end portion of the length component of the fibrous body. 6. The ink supply container according to claim 5, wherein the discharge portion is located at a position where the fiber end portion is compressed in the fiber direction of the fibrous body, and the end portion of the fibrous body is longer than the end portion of the length component of the fibrous body. An ink supply container characterized by being located on the center side. 7. The ink supply container according to claim 4, wherein the first liquid absorbing member is made of a deformable resin having an opening for holding the plurality of fibrous bodies under compression and enabling the contact. An ink supply container having an enclosing member, which is loaded in the ink supply container in a state of being in contact with the first liquid absorbing member. 8. A filling method for filling ink into the ink supply container according to claim 1, comprising the step of inserting an end portion of a supply member for filling ink near the contact portion to supply the filled ink. An ink filling method characterized by the above. 9. The filling method according to claim 8, wherein the second liquid absorbing member is a continuous porous elastic body that is compressed and loaded, and the first liquid absorbing member is compressed. A fibrous body and a deformable resin surrounding member having an opening for holding the multiplicity of fibrous bodies in compression and allowing the contact, and the end of the supply member is on the continuous porous elastic body side. An ink filling method characterized in that the ink filling is performed at the position. 10. The ink supply container according to claim 1, wherein the first liquid absorbing member has a characteristic of expanding in volume by absorbing ink and absorbing the ink, and the second liquid absorbing member. The member supplies ink to the first liquid absorbing member,
An ink supply container having a characteristic of absorbing outside air and expanding in volume, wherein the capillary action force of the first liquid absorbing member is superior to the capillary action force of the second liquid absorbing member. 11. The ink supply container according to claim 10, wherein an ink guide tube communicating with a recording head of a recording system that forms bubbles by thermal energy can be connected to the discharge portion of the ink supply container. An ink supply container characterized by being present. 12. An ink jet recording head detachable from a recording device, comprising: a recording head section having a large number of ejection sections for ejecting ink and a common liquid chamber for supplying ink to the ejection sections. An ink guide member that supplies ink to the common liquid chamber and an ink supply unit that is connected to the guide member are included. The supply unit discharges the internal ink to the end of the guide member, and the inside is the atmosphere. And a first liquid absorbing member having an ink guiding characteristic for guiding the ink contained therein to the discharge portion side, and an atmosphere communicating portion and the first liquid absorbing member. An ink jet recording head comprising: a second liquid absorbing member having an ink holding characteristic for holding the ink housed therein, at least partially in contact with each other. 13. The recording head according to claim 12, wherein the ink supply container accommodates the second liquid absorbing member and directly communicates with the atmosphere communicating portion, and the first liquid absorbing member. And a first region for accommodating a plurality of fibrous bodies in which the first liquid absorbing member is compressed in the first region except that the contact portion is opened. 2. An ink jet recording head, wherein the liquid absorbing member is a continuous porous elastic body compressed in the second region. 14. The recording head according to claim 12, wherein the first liquid absorbing member includes a deformable resin surrounding member having an opening for allowing the contact, and the resin surrounding member. An ink jet recording head, comprising: a plurality of fibrous bodies that are compressed in a direction intersecting with a length direction in a member. 15. The recording head according to claim 12, wherein the first liquid absorbent member has a large number of fibrous bodies compressed in a direction intersecting with a length direction, and the second liquid absorbent member. An ink jet recording head, wherein a contact portion that comes into contact with the fiber is in a direction intersecting the fiber direction of the fiber body. 16. The ink jet recording head according to claim 15, wherein the contact portion is closer to the center side than the end portion of the length component of the fibrous body. 17. The recording head according to claim 16, wherein the discharging portion is located at a position where a fiber end portion is compressed with respect to a fiber direction of the fibrous body, and is located at an end portion of a length component of the fibrous body. Inkjet recording head characterized by being located on the center side in comparison. 18. The recording head according to claim 14, wherein the first liquid absorbing member holds the plurality of fibrous bodies under compression and has a deformable resin having an opening for allowing the contact. An ink jet recording head having an enclosing member, which is loaded in the ink supply container in a state of being in contact with the second liquid absorbing member. 19. A filling method for filling ink into a recording head according to claim 12, further comprising the step of inserting an end portion of an ink filling supply member near the contact portion to supply the filled ink. An ink filling method characterized by: 20. The filling method according to claim 19, wherein the second liquid absorbing member is a continuous porous elastic body compressed and loaded, and the first liquid absorbing member is a large number of compressed fibrous bodies. And a deformable resin surrounding member having an opening for compressing and holding the multiplicity of fibrous bodies to enable the contact, and the end of the supply member is located on the continuous porous elastic body side. Ink filling method, characterized by performing the above ink filling. 21. The recording head according to claim 12, wherein the first liquid absorbing member has a property of expanding in volume by absorbing ink and absorbing the ink, and the second liquid absorbing member. Has a characteristic of absorbing the outside air and expanding in volume by supplying ink to the first liquid absorbing member, and the capillary action force of the first liquid absorbing member is the capillary action force of the second liquid absorbing member. Inkjet recording head characterized by being superior to. 22. The recording head according to claim 21, wherein the recording head is an electric discharge device that forms 10 or more ejection ports as the multi-ejection part and bubbles by film boiling with thermal energy to each of the ejection ports. A plurality of fibrous bodies having a heat conversion body, a filter provided at an end of the ink guide member, and being compressed in a direction intersecting with a length direction of the fibers as the first liquid absorbing member; A member included in a resin surrounding member having an opening for allowing contact between the body and the second liquid absorbing member, and the end filter of the ink guiding member is a fiber length inside the resin surrounding member. An ink jet recording head characterized by being inserted in the vertical direction. 23. An ink jetting section is provided with ten or more ejection ports for ejecting ink, and an electrothermal converter for forming air bubbles by film boiling with thermal energy to each of the ejection ports, and the ink is supplied to the ejection unit. A recording head unit including a common liquid chamber for supplying ink to the common liquid chamber, an ink guide member having a filter at the other end, and an ink supply member connected to the guide member; Is a discharge part for discharging the ink inside to the end of the guide member, an atmosphere communication part provided at a position different from the discharge part for communicating the inside with the atmosphere, and an ink guide for guiding the ink contained inside. A first liquid-absorbing member comprising a large number of compressed fibrous bodies and a deformable resin surrounding member having an opening for holding the large number of fibrous bodies in a compressed state and releasing the large number of fibrous bodies; Between the atmosphere communicating portion and the first liquid absorbing member A continuous porous elastic body that has an ink holding property for holding the ink contained therein, is in close contact with the fibrous body at the opening, and is compressed to form a negative pressure. A second liquid absorbing member is included, and the discharging portion is a position where the end filter of the ink guiding member is inserted in the fiber length direction inside the resin surrounding member, and is near the opening. An inkjet recording head characterized by the above. 24. An ink jetting section is provided with ten or more jetting ports for jetting ink, and an electrothermal converter that forms bubbles by film boiling with thermal energy to each of the jetting ports and the ink is supplied to the jetting section. A recording head unit having a common liquid chamber for supplying ink to the common liquid chamber, an ink guide member having a filter at the other end, and an ink supply unit connected to the guide member. Is an air communication portion that communicates the inside with the atmosphere, a discharge portion that discharges the ink inside to the end of the guide member, and a large number of compressed fibers that have ink guiding characteristics for guiding the ink stored inside. Liquid absorbing member comprising a body and a deformable resin surrounding member having an opening for holding the multifilament body in compression and releasing the multifilament body, the atmosphere communicating portion and the first liquid absorbing member And the ink contained inside A second liquid absorbing member which has a characteristic of holding ink and which is in close contact with the fibrous body at the opening and is made of a continuous porous elastic body in a compressed state; At a position where the end filter is inserted in the resin surrounding member by 3 mm or more in the fiber length direction, and a diameter d that gives a cross-sectional area perpendicular to the ink guiding direction in the vicinity of the filter of the guiding member, The first
An ink jet recording head characterized in that a diameter D giving a cross-sectional area perpendicular to the ink guiding direction of the liquid absorbing member in the vicinity of the filter satisfies D ≧ 1.5 × d, and the area of the opening is 100 mm ² or more. 25. The recording head according to claim 24, further comprising drive means for driving the 10 or more electrothermal transducers, wherein the drive means outputs a drive signal corresponding to a print signal at 5 kHz. A recording apparatus which is driven at the above frequencies.