JP4158723B2 - Liquid ejecting head and liquid ejecting apparatus - Google Patents

Description

  The present invention relates to a liquid ejecting head and a liquid ejecting apparatus that eject liquid.

2. Description of the Related Art Conventionally, an ink jet printer apparatus includes a printer head having a case for mounting an ink cartridge for containing ink, and a head unit that receives ink supplied through the case and discharges ink from nozzles. (For example, refer to Patent Document 1).
FIG. 9 is a schematic explanatory diagram showing the main relationship of such a printer head.
As shown in FIG. 9, the printer head 10 has a resin case 11. Four ink supply needles 12a to 12d are arranged in the case 11, and an ink cartridge (not shown) that stores ink is attached to the ink supply needle 12a and the like, so that the ink is contained inside the case 11. Will flow in.
Specifically, since the printer head 10 shown in FIG. 9 is a four-color printer head, each of the four ink supply needles 12a to 12d is provided with an ink cartridge containing different colors of ink. The

Further, as shown in FIG. 9, the case 11 is formed with four case flow paths 14a to 14d through which ink flows, and is connected to the ink supply needles 12a and the like. That is, the ink for each color is guided by different case flow paths 14a and the like.
In addition, filters 15a to 15d are attached to the upper openings of the case channel 14a and the like.
The head unit 13 shown in FIG. 9 is attached to the lower part of the case 11 such as the case flow path 14a.
Below the head unit 13, there are arranged a nozzle for discharging ink, a flow path unit having a pressure generating chamber for storing ink discharged from the nozzle, and the like. Further, the head unit 13 is formed with four head flow paths 13a and the like for individually guiding the above-described four color inks with respect to the flow path unit.

Therefore, the lower opening of the case flow path 14a and the like of the case 11 in FIG. 9 is a position corresponding to the upper opening of the head flow path 13a and the like of the head unit 13.
Thus, when the positions of the openings coincide with each other, the ink in the ink cartridge attached to the case 11 is smoothly guided into the head unit 13 and discharged from the nozzles onto a recording sheet or the like. Yes.
JP 2002-331656 A

By the way, in recent years, the types of ink used in the ink jet printer apparatus have increased, and it has become necessary to arrange six color ink cartridges in the case 11.
In this case, it is necessary to increase the number of ink supply needles from the conventional four to six in order to mount the ink cartridge of the increased color.
Reference numeral 12e in FIG. 9 is an ink supply needle for mounting the increased color ink cartridge, and a broken line portion in FIG. 9 is a case flow path 14e for guiding the increased ink.
As shown in FIG. 9, as the ink supply needles 12e are increased, the arrangement area of the ink supply needles 12e and the like expands in the left-right direction in the figure.
However, the head flow path 13e formed in the head unit 13 and corresponding to the case flow path 14e does not spread so much in the left-right direction because the size of the head unit 13 is restricted. For this reason, the relative position of the lower opening of the case flow path 14e and the upper opening of the head flow path 13e in FIG.
Therefore, as shown in FIG. 9, the angle θ2 of the case flow path 14e is larger than the angle θ1 of the right case flow path 14a, and the inclination of the case flow path 14e becomes smaller.

FIG. 10 is a schematic explanatory view showing, in an enlarged manner, a portion where the case flow path 14e shown in FIG. 9 is formed. In FIG. 10, the direction of the case flow path 14e is opposite to the direction shown in FIG. 9 for convenience of explanation.
In order to form the case flow path 14e with a small inclination as shown in FIG. 10, it is necessary to pull out the flow path pin 16 as indicated by reference numeral 16.
However, when the flow path pin 16 is pulled out, the flow path pin 16 comes into contact with the filter mounting pin 17 for mounting the filter 15e or the like formed in the case 11 to destroy the filter mounting pin 17. There was a fear. The destruction of the mounting pin 17 has a problem that ink leakage or the like occurs due to poor mounting of the filter 15e or the like.
Further, when the channel pin 16 is moved with a small inclination as shown in FIG. 10, the channel pin 16 is easily affected by gravity as shown in FIG. 11, and is bent downward as shown in FIG. There was a problem that the case flow path could not be formed accurately.
FIG. 11 is a schematic explanatory view showing a bent state of the flow path pin 16 and the like.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a liquid ejecting head and a liquid ejecting apparatus that can form a case flow path accurately and do not cause ink leakage even when the number of case flow path portions of the case section is increased. And

  According to the first aspect of the present invention, there is provided a case portion having a liquid supply needle portion to which a liquid storage means is attached, a case main body on which the liquid supply needle portion is disposed, and the case portion through the case portion. A liquid ejecting head having a head unit configured to guide the liquid in the liquid storage unit and to discharge the liquid to the target; and introducing the liquid into the liquid supply needle unit A needle-side flow passage portion is formed, and the case main body is connected to the needle-side flow passage portion and is arranged so as to cross the longitudinal direction of the needle-side flow passage portion. And a case flow path portion connected to the intermediate flow path portion and configured to introduce the liquid into the head unit portion, and the head unit portion includes the case flow path portion. And the head It is achieved by the liquid jet head, characterized in that the head channel portion for introducing the liquid into the unit portion.

According to the configuration of the first aspect of the invention, the intermediate flow path portion connected to the needle side flow path section and disposed so as to cross the longitudinal direction of the needle side flow path section, and the intermediate flow path section, A case channel portion configured to be connected and to introduce the liquid into the head unit portion is formed.
For this reason, the flow path in the case main body, which has conventionally been one continuous member, is divided into the intermediate flow path portion and the case flow path portion.
Therefore, conventionally, even if the inclination of the flow path of the case main body is small, that is, the case main body is disposed so as to fall sideways, the divided intermediate flow path section and the case flow path section By making the arrangement angle different, the inclination can be increased, that is, it can be arranged in a direction that does not fall down more.
For this reason, when the flow passage forming pin is pulled out for forming the case flow passage portion or the like, unlike the conventional case, it is possible to prevent the filter mounting pin or the like formed on the case main body from being destroyed.

Conventionally, in order to increase the inclination, that is, to prevent the case from falling sideways, it has been necessary to increase the thickness of the case body. However, in the configuration of the present invention, it is necessary to increase the thickness of the case body. It is possible to reduce the size because there is no.
In addition, since the inclination of the case flow passage portion or the like can be increased, that is, the case flow passage portion can be arranged in a direction in which the case flow passage portion does not fall down, the flow passage pins used are affected by gravity when forming the case flow passage portion and the like. Since it is difficult and is hard to bend, the said case flow path part etc. can be formed more accurately.

  Preferably, according to the second invention, in the configuration of the first invention, the case portion includes a first case portion having the needle-side flow passage portion, the intermediate flow passage portion, and the case flow passage portion. A first case portion, and the first case portion and the second case portion are configured to be separable, and the needle-side flow passage portion is formed with respect to the intermediate flow passage portion. Arranged in a substantially vertical direction, the intermediate flow path portion is formed along a split surface of the second case portion, and the case flow path portion is disposed on the opposite side of the split surface from the split surface. The liquid ejecting head is characterized in that the liquid ejecting head is formed over the bottom surface side connected to the head unit portion.

According to the configuration of the second aspect of the invention, the needle side flow path portion is disposed in a substantially vertical direction with respect to the intermediate flow path portion, and the intermediate flow path portion extends along the dividing surface of the second case portion. The case channel portion is formed from the dividing surface to the bottom surface side connected to the head unit portion disposed on the opposite side of the dividing surface.
That is, by forming the intermediate flow path portion along the dividing surface, the needle side flow path section and the case flow path section can be connected in a shifted manner without being directly connected. It becomes easy to increase the inclination of the flow path part (in the direction in which the flow path part rises more).

  Preferably, according to a third aspect, in the second aspect, the intermediate flow path portion is configured to be disposed in any direction on the dividing surface of the second case portion, and In the liquid ejecting head, longitudinal directions of the plurality of case flow path portions formed in the case portion are arranged on substantially the same virtual surface or substantially parallel virtual surfaces.

According to the configuration of the third invention, the longitudinal directions of the plurality of case flow path portions formed in the second case portion are arranged on substantially the same virtual plane or substantially parallel to each other. ing.
For this reason, the drawing direction of the flow channel pins used when forming the case flow channel portion is substantially the same virtual surface or substantially parallel to each other.
In this regard, conventionally, since the direction of the longitudinal direction of the case flow path portion is different for each case flow path portion, the direction in which the flow channel pin is pulled out is also different for each case flow path portion. For this reason, in the manufacturing process, it is necessary to ensure the direction of removal of the flow path pins corresponding to the case flow path portions, and wasteful areas are generated.
However, in the configuration of the present invention, when each case flow path portion is formed, the direction in which each flow path pin is pulled out becomes a substantially identical virtual plane or a substantially parallel virtual plane. The second case portion and the like can be efficiently manufactured without any trouble.

  Preferably, according to the fourth invention, in the configuration of the second or third invention, a part of the case flow path portion of the second case portion is connected to the first flow path via the intermediate flow path portion. The liquid ejecting head is connected to the needle side flow path portion of the case portion.

According to the configuration of the fourth aspect of the invention, a part of the case channel portion of the second case portion is connected to the needle side channel portion of the first case portion via the intermediate channel portion. ing. For this reason, it is possible to connect only the case flow path portion arranged so as to fall more horizontally among the plurality of case flow path portions to the needle side flow path portion via the intermediate flow path portion.
Therefore, since it is not necessary to form the intermediate flow path for all the case flow paths, the manufacturing cost of the liquid jet head can be significantly reduced.

  According to a fifth aspect of the present invention, there is provided a case portion having a liquid supply needle portion to which a liquid storage means is attached, a case main body on which the liquid supply needle portion is disposed, and the case portion through the case portion. A liquid ejecting apparatus comprising: a liquid ejecting head having a head unit configured to guide the liquid in the liquid storage means and to eject the liquid to a target, wherein the liquid ejecting head includes: The liquid supply needle portion is formed with a needle-side flow channel portion for introducing a liquid, and the case body is connected to the needle-side flow channel portion and has a longitudinal direction of the needle-side flow channel portion. An intermediate flow path portion disposed so as to intersect, and a case flow path portion connected to the intermediate flow path portion and configured to introduce the liquid into the head unit portion, and the head In the unit part, Is connected with the over scan channel portion, the head channel portion for introducing the liquid into the head unit part is that achieved by liquid-jet apparatus characterized being formed.

According to the configuration of the fifth invention, similarly to the configuration of the first invention, when removing the flow channel forming pin for forming the case flow channel portion or the like, unlike the conventional case, the case main body is formed on the case body. It is possible to prevent the filter mounting pins and the like from being destroyed.
Moreover, in the structure of this invention, since it is not necessary to enlarge the thickness of the said case main body, size reduction can be achieved.
In addition, since the inclination of the case flow passage portion or the like can be increased, that is, the case flow passage portion can be arranged in a direction in which the case flow passage portion does not fall down, the flow passage pins used are affected by gravity when forming the case flow passage portion and the like. Since it is difficult and is hard to bend, the said case flow path part etc. can be formed more accurately.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.

FIG. 1 is a schematic perspective view showing an ink jet recording apparatus (hereinafter referred to as “recording apparatus”) 100 according to an embodiment of a liquid ejecting apparatus of the invention.
As shown in FIG. 1, the recording apparatus 100 includes a carriage 101. The carriage 101 is guided by a guide shaft 104 through a timing belt 103 driven by a carriage motor 102, and reciprocates in the axial direction of the platen 105. It is configured to be.

For example, an ink jet recording head (hereinafter referred to as “recording head”) 300, which is a liquid ejecting head described later, is accommodated on the side of the carriage 101 facing the recording sheet 200 in FIG. For example, an ink cartridge 106, which is a liquid storage means for storing ink, for example, is detachably loaded.
Specifically, the ink cartridge 106 is mounted with ink cartridges of six colors of black, cyan, magenta, yellow, light cyan, and light magenta. For this reason, the recording head 300 in FIG. 1 is a six-color head.
The recording paper 200 shown in FIG. 1 is arranged in a print area P, and the recording head 300 discharges the above-described six color inks to perform printing.

FIG. 2 is a schematic perspective view showing, for example, a case 310 which is a case body and a case main body of the recording head 300.
As illustrated in FIG. 2, the case 310 includes, for example, an upper case 320 that is a first case portion, and a lower case 330 that is a second case portion. That is, the case 310 is configured to be divided into an upper case 320 and a lower case 330.
The upper case 320 is provided with, for example, six ink supply needles 321a to 321f that are liquid supply needle portions for mounting the ink cartridges of the respective colors of the ink cartridge 106 of FIG.
In the present embodiment, the ink supply needles 321 a to 321 f are formed integrally with the upper case 320.

FIG. 3 is a schematic cross-sectional view of a state in which the lower case 330 is attached to the upper case 320 of FIG.
As shown in FIG. 3, inside the ink supply needle 321a, for example, a needle side flow path 322a is a needle side flow path portion for introducing ink in the ink cartridge 106 attached to the ink supply needle 321a. Is formed. As shown in FIGS. 2 and 3, the needle-side flow path 322 a is formed in the vertical direction in the drawings.
Although not shown, the ink supply needles 321b to 321f in FIG. 2 are also formed with needle side channels 322b to 322f as in FIG.

As shown in FIG. 2, the lower case 330 is connected to the needle side flow paths 322a to 322f of the upper case 320 and is the longitudinal direction of the needle side flow path 322a, for example, the vertical direction of FIG. The intermediate flow path part arrange | positioned so that it may cross | intersect is formed.
The intermediate flow path portions are, for example, horizontal flow paths 333a to 333f shown in FIG. The horizontal flow path 333a etc. are arrange | positioned so that the division surface of the lower case 330 may be followed, as shown in FIG.
For this reason, as shown in FIG. 3, the needle-side channel 322a and the like are arranged in a substantially vertical direction with respect to the horizontal channel 333a and the like.

  Further, as shown in FIG. 2, the lower case 330 is connected to the horizontal flow path 333a and the like, and is formed with a case flow path portion formed downward, for example, a case flow path 334a and the like. Has been.

4 is a schematic exploded view showing a TCP (tape carrier package) which is a part of the recording head 300 and connected to the lower portion of the lower case 330 in FIG. 2, a head unit portion, and the like.
The ink in the ink cartridge 106 in FIG. 1 is guided to the head unit through the upper case 320 and the lower case 330 in FIG. 2, and the head unit ejects ink onto the recording paper 200 in FIG. It is the composition to do. The head unit 350 in FIG. 4 is an example of the head unit portion.

As shown in FIG. 4, the head unit 350 includes a nozzle plate 354 on which a number of nozzles 354a for discharging ink are formed.
A reservoir plate 353 that supplies ink to the nozzle plate 354 is formed on the nozzle plate 354.
A supply plate 352 that supplies ink to the reservoir plate 353 is disposed on the reservoir plate 353.
An actuator 351 is bonded on the supply plate 352. The actuator 351 is provided with a piezoelectric vibrator that performs flexural vibration when a voltage is applied. Therefore, a desired ink is ejected from the nozzle 354a by the flexural vibration of the piezoelectric vibrator.

As described above, a head flow path portion for introducing ink is formed in the head unit 350. That is, the head channel portion is configured to introduce ink by being connected to the case channel 334a of the lower case 330 in FIG.
Specifically, the ink is guided into the head unit 350 by connecting the lower opening such as the case flow path 334a of FIG. 2 to the inlet 352a formed in the supply plate 352 of FIG. .

Since the head unit 350 is configured as described above, the case flow path 334a and the like are connected to the lower case 330 connected to the head unit 350 disposed on the opposite side (lower side in the figure) of the dividing surface 331 of the lower case 330 in FIG. Is formed up to the bottom side.
On the other hand, a cover head 370 is disposed on the lowermost side of the head unit 350 in FIG.
Further, as shown in FIG. 3, a filter 335 is disposed on the upper opening side of the case flow path 334a of the lower case 330, and is configured to filter ink or the like.
The lower case 330 is formed with convex filter pins 336 for fixing the filter 335 and the like.

FIG. 5 is a schematic explanatory view showing the arrangement of the flow paths in the case 310 such as the needle-side flow path 322a, the horizontal flow path 333a, and the like, and the case flow path 334a.
As shown in FIG. 5, for example, the lower opening of the needle-side flow path 322a of the upper case 320 of FIG. 3 is connected to the horizontal flow path 333a of the lower case 330 of FIG. As shown in FIG. 2, the horizontal flow path 333a is connected to the case flow path 334a via a filter 335 (see FIG. 3).
As shown in FIG. 5, the case flow path 334 a is configured to be connected to the inlet 352 a of the supply plate 352 of the head unit 350.
Accordingly, the ink introduced from the ink supply needle 321a of FIG. 2 is guided to the inlet 352a of the supply plate 352 of the head unit 350 via the horizontal flow path 333a and the case flow path 334a of the lower case 330, and FIG. The nozzle 354a is configured to discharge.
As shown in FIG. 5, the needle side flow paths 322b to 322f in the ink supply needles 321b to 321f of the upper case 320 in FIG. 3 are also connected to the horizontal flow paths 333b to 333f and the case flow paths, similarly to the needle side flow path 322a. It is configured to be connected to the inlet 352a of the supply plate 352 via 334b to 334f.

In the present embodiment, as shown in FIG. 2, a horizontal flow path 333 a and the like in the horizontal direction are arranged in the lower case 330, a lower opening such as a needle side flow path 322 a of the upper case 320, and a case of the lower case 330 The upper opening such as the flow path 334a is connected via a horizontal path 333a and the like.
Therefore, the case flow paths 334a to 334f shown in FIG. 5 can be formed thin (short) in the thickness direction of the lower case 330.
Further, the position of the upper opening of the case flow path 334a and the like can also be related to the position of the lower opening of the needle side flow path 322a and the like of the upper case 320, for example, close to the introduction port 352a of the supply plate 352 of FIG.
Therefore, compared with the conventional case flow path 14e etc. shown in FIG. 9, the inclination can be enlarged. That is, the case channel 334a and the like of the present embodiment can be arranged in a direction that does not fall down more.
Further, when the case flow path 334a and the like are inclined and arranged in a direction in which the case flow path 334a or the like is not more tilted (closer to the standing direction), it is not necessary to increase the thickness of the case 310. The inclination of the case flow path 334a and the like can be adjusted.

For this reason, the case flow path 334a and the like of the present embodiment are formed so as not to fall down compared to the case flow path 14e and the like of FIG. Since there is no contact with the filter mounting pin 17 (filter pin 336 in FIG. 3), the filter mounting pin 17 in FIG. 10 (filter pin 336 in FIG. 3) can be prevented from being broken.
Therefore, even when the filter 335 is attached to the filter pin 336 of FIG. 3, it is possible to prevent ink leakage from the surroundings of the filter 335 in advance.

  Further, since the case flow path 334a and the like of the present embodiment are arranged in a direction that does not fall more (inclination is larger), the flow path pin 16 is unlikely to be affected by gravity unlike the conventional example of FIG. Therefore, in the manufacturing process for manufacturing the case flow path 334a and the like, the case flow path 334a and the like with higher accuracy can be manufactured.

In the present embodiment, the fixed positions are the needle-side flow path 322a of the upper case 320 and the introduction port 352a of the head unit 350, and the horizontal flow path 333a and the like positioned between them. Since the position of the upper opening in which the filter 335 of the case flow path 334a is arranged can be changed to an arbitrary position, it is possible to make it cheap and easy to adjust the inclination of the case flow path 334a and the like so as not to fall down too much. Can do.
In the present embodiment, as shown in FIG. 5, the position of the filter 335, which is the upper opening of the case flow path 334a, etc. is set as a substantially intermediate position between the needle side flow path 322a and the like and the introduction port 352a of the head unit 350. However, the arrangement position of the filter 335, which is the upper opening of the case flow path 334a or the like, may be another position.

Furthermore, in this embodiment, as shown in FIG. 2, the horizontal flow paths 333a and the like are formed with respect to the upper openings (filter 335 placement positions) of all the case flow paths 334a and the like. The horizontal flow path 333a or the like may be formed only in the case flow path 334a or the like that is small and is arranged to lie on its side. That is, the horizontal flow path 333a or the like is formed only for a part of the case flow path 334a or the like.
For example, the horizontal flow paths 333a and 333f are provided only for the case flow path 333a and the case flow path 334f, which are the left and right ends of FIG.
With this configuration, the number of horizontal flow paths 333a and the like formed is reduced, and thus the manufacturing cost of the recording head 100 can be reduced.

Incidentally, the case flow path 334a and the like of the lower case 330 can be arranged in any direction on the dividing surface 331 of the lower case 330 of FIG. And as shown in FIG. 5, the longitudinal direction of case flow paths 334a etc. is arrange | positioned on the AA surface and BB surface which are the mutually substantially the same virtual surface or a substantially parallel virtual surface, for example. be able to.
FIG. 6 is a schematic explanatory view showing a part of a process of forming the case flow path 334a and the like using the flow path pins 16.
As shown in FIG. 6, since the channel pin 16 can be pulled out in the left-right direction in the figure, two lower cases 330 and the like can be manufactured at the same time.

FIG. 7 is a schematic explanatory view showing the arrangement state of the conventional case flow path 14 by the same method as in FIG. As shown in FIG. 7, the longitudinal direction of the conventional case flow path 14 is not disposed on substantially the same virtual plane or mutually parallel virtual planes.
FIG. 8 is a schematic explanatory view showing a part of a manufacturing process for manufacturing the case flow path 14 of FIG.
As shown in FIG. 8, in order to form the case flow path 14, when the flow path pin 16 is pulled out, it cannot be smoothly pulled out because of interference with the guides 400 arranged at the four corners.
However, in the case of the present embodiment, two lower cases 330 and the like can be manufactured simultaneously as shown in FIG.
Therefore, in the present embodiment, a large number of lower cases 330 and the like can be manufactured at the same time, so that the manufacturing efficiency is remarkably improved.

  The present invention is not limited to the above-described embodiment. Furthermore, the above-described embodiments may be combined with each other. The present invention is not limited to an ink jet recording apparatus, but a recording head used in an image recording apparatus such as a printer, a color material ejecting head used in manufacturing a color filter such as a liquid crystal display, an organic EL display, and an FED (surface emitting). Electrode material ejecting heads used for electrode formation such as displays), liquid ejecting apparatuses using liquid ejecting heads for ejecting liquids such as bioorganic ejecting heads used for biochip manufacturing, sample ejecting apparatuses as precision pipettes, etc. Applicable.

1 is a schematic perspective view showing an ink jet recording apparatus (hereinafter referred to as “recording apparatus”) according to an embodiment of a liquid ejecting apparatus of the invention. FIG. 2 is a schematic perspective view showing a case, for example, a case body that is a case portion and a case body of the recording head. It is a schematic sectional drawing of the state which mounted | wore the upper case of FIG. FIG. 3 is a schematic exploded view showing a TCP, a head unit portion, and the like which are a part of the recording head and are a flexible substrate connected to the lower part of the lower case in FIG. 2. It is a schematic explanatory drawing which shows arrangement | positioning of each flow path of the needle side flow path in a case, a horizontal flow path, and a case flow path. It is a schematic explanatory drawing which shows a part of process of forming a case flow path using a flow path pin. It is the schematic explanatory drawing which represented the arrangement | positioning state of the conventional case flow path with the method similar to FIG. It is a schematic explanatory drawing which shows a part of manufacturing process which manufactures the case flow path of FIG. It is a schematic explanatory drawing which shows the main relationships of a printer head. It is a schematic explanatory drawing which expands and shows the formation part of the case flow path of FIG. It is a schematic explanatory drawing which shows the state etc. which the flow-path pin bent.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Inkjet recording apparatus, 101 ... Carriage, 102 ... Carriage motor, 103 ... Timing belt, 104 ... Guide shaft, 105 ... Platen, 106 ... Ink cartridge, 200 ... Recording paper, 300 ... Inkjet recording head, 310 ... Case, 320 ... Upper case, 321a to 321f ... Ink supply needle, 322a to 322f ... Needle side flow path, 330 ... Lower case, 331 ... Dividing surface, 333a to 333f ... Horizontal flow path, 334a to 334f ... Case flow path, 335 ... Filter, 336 ... Filter pin, 350 ... Head unit, 351, actuator, 352, supply plate, 352a, inlet, 353, reservoir Rate, 354 ... nozzle plate, 354a ··· nozzle, 360 ··· TCP, 370 ··· cover head, 400 ... guide.

Claims (4)

A needle-side flow path provided in a liquid supply needle section to which the liquid storage means is mounted and extending from the liquid storage means toward the head unit; and the needle-side flow path section connected to the needle-side flow path section An intermediate flow path portion extending in a direction perpendicular to a direction in which the liquid crystal extends, a filter for filtering the liquid that has passed through the intermediate flow path section, and a case flow path that is connected to the filter and introduces the liquid into the head unit section. A case portion having a portion,
A liquid ejecting head comprising: the head unit portion configured to guide the liquid in the liquid storage means through the case portion and to discharge the liquid to a target;
A row of liquid supply needle portions formed by a plurality of the liquid supply needle portions;
In a plan view when viewed from the liquid storage means toward the head unit, a part of the plurality of liquid supply needles overlaps with a filter corresponding to the liquid supply needle. is arranged, depending on Rukoto disposed so as not to overlap with the filter corresponding to the remaining liquid supply needle and the liquid supply needle portion, a plurality of filters corresponding to the plurality of liquid feed needle portion of the plurality liquid A plurality of filter rows extending in the row direction of the supply needle portions are formed,
A liquid ejecting head, wherein a component in a direction perpendicular to the needle side flow path portion of the plurality of case flow path portions is formed to be parallel to a parallel direction of the liquid supply needles. The case portion includes a first case portion having the needle side flow passage portion, and a second case portion having the intermediate flow passage portion and the case flow passage portion, and the first case portion. And the second case portion are configured to be splitable, and the needle side flow passage portion is arranged in a direction perpendicular to the intermediate flow passage portion, and the intermediate flow passage portion is formed of the second case portion. The case flow path portion is formed from the dividing surface to the bottom surface portion connected to the head unit portion arranged on the opposite side of the dividing surface. The liquid ejecting head according to claim 1, wherein: The part of the case flow path part of the second case part is connected to the needle side flow path part of the first case part via the intermediate flow path part. The liquid jet head described in 1. A needle-side flow path provided in a liquid supply needle section to which the liquid storage means is mounted and extending from the liquid storage means toward the head unit; and the needle-side flow path section connected to the needle-side flow path section An intermediate flow path portion extending in a direction perpendicular to a direction in which the liquid crystal extends, a filter for filtering the liquid that has passed through the intermediate flow path section, and a case flow path that is connected to the filter and introduces the liquid into the head unit section. A case portion having a portion,
A liquid ejecting apparatus comprising: the head unit configured to guide the liquid in the liquid storage means through the case and to discharge the liquid to a target;
A row of liquid supply needle portions formed by a plurality of the liquid supply needle portions;
In a plan view when viewed from the liquid storage means toward the head unit, a part of the plurality of liquid supply needles overlaps with a filter corresponding to the liquid supply needle. is arranged, depending on Rukoto disposed so as not to overlap with the filter corresponding to the remaining liquid supply needle and the liquid supply needle portion, a plurality of filters corresponding to the plurality of liquid feed needle portion of the plurality liquid A plurality of filter rows extending in the row direction of the supply needle portions are formed,
The liquid ejecting apparatus according to claim 1, wherein a component of the plurality of case flow path portions in a direction perpendicular to the needle side flow path portion is parallel to a parallel direction of the liquid supply needles.

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