JP2004284255A - Inkjet recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an inkjet recording device which covers an outer edge part of a nozzle plate and also prevents damage of a nozzle face. <P>SOLUTION: A nozzle cover 72 for covering the outer edge part of the nozzle plate 22 is set to be fitted onto a head case 20. At the same time, bars 80 are hung at opening parts 72A of the nozzle cover 72. The bar 80 is disposed at the nozzle face 22A between nozzle groups 37 to expose the nozzle face 22A for every nozzle group 37. The outer edge part of the nozzle plate 22 is protected by setting the nozzle cover 72 which covers the outer edge part of the nozzle plate 22, and an exposed area of the nozzle face 22A is made minimum by setting the bars 80 at the opening parts 72A of the nozzle cover 72. A recording paper P which folds at its corner, jams or the like is protected not to touch the nozzle face 22A. The damage of the nozzle face 22A is prevented accordingly. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ink jet recording apparatus that performs printing by discharging ink droplets on a surface to be printed.
[0002]
[Prior art]
A so-called ink jet recording apparatus that discharges liquid or molten solid ink from nozzles, slits, porous films, etc., and prints on printing materials such as paper, cloth, film, etc. has various advantages such as small size, low cost, quietness, etc. There is. For this reason, recently, a large number of ink jet recording apparatuses for recording on report paper, copy paper, and the like are commercially available, and occupy a large position in the field of recording apparatuses.
[0003]
Above all, a piezo ink jet system that ejects ink droplets by changing the pressure in a pressure chamber using a piezoelectric element, and a thermal ink jet system that ejects ink droplets by expanding ink by the action of thermal energy, high-speed printing, It has many advantages such as high resolution.
[0004]
In these inkjet recording apparatuses, when an ink droplet is ejected from a nozzle in an inkjet recording head, the ink droplet adheres to the periphery of the nozzle, and ink leakage occurs due to an overshoot phenomenon in which the ink swells from the nozzle.
[0005]
For this reason, the ink ejection direction may be inclined, and the diameter and speed of the ink droplet may vary, which may significantly reduce the printing performance of the inkjet recording head. Therefore, in order to prevent ink droplets from adhering around the nozzle, a water-repellent film is applied to the nozzle surface.
[0006]
On the other hand, as a method for increasing the speed of the inkjet recording apparatus, it is conceivable to increase the number of nozzles. In this case, it is expected that the size of the nozzle plate of the recording head will be increased. As the size of the nozzle plate increases, the exposure of the nozzle surface increases, and the possibility that the recording paper comes into contact with the nozzle surface due to corner breaks or jams of the recording paper increases. As a result, the water-repellent film on the nozzle surface is damaged, resulting in ejection failure.
[0007]
As a measure to prevent the nozzle surface from being damaged due to a recording paper jam or the like, as shown in FIG. 9, a nozzle cover 104 that covers the outer edge of the nozzle plate 100 is attached to a head cover 102 to which the nozzle plate 100 is fixed. However, when the area of the opening 104A is large, it is difficult to completely prevent the nozzle surface from being damaged by the recording paper.
[0008]
For this reason, in Patent Literature 1, as shown in FIG. 10, the nozzle surface 106A of the head substrate 106 is inclined with respect to the surface of the mask surface 108 or protrudes from the surface. Thus, dust around the nozzle surface 106A is removed, and the nozzle surface 106A is protected from recording paper.
[0009]
Further, in Patent Document 2, as shown in FIG. 11, the nozzle protection plate 112 is formed as a recess with respect to the head holder 110, and the nozzle surface 114 of the head substrate 116 is formed as a recess with respect to the nozzle protection plate 112. By forming the periphery of the surface 114 into a step shape, the nozzle surface 114 is prevented from being damaged by the recording paper.
[0010]
On the other hand, as in Patent Document 3 previously proposed by the present applicant, a bar 122 for partitioning each recording head 120 is provided in an opening 118A of a nozzle cover 118 shown in FIG. By providing an opening window 126 for each recording head (not shown) in the protective cover plate 124 shown in FIG. 13, the area of the opening of the protective cover plate 124 can be reduced to reduce the exposed area of the nozzle surface 128. Conceivable.
[0011]
However, in Patent Literature 1, as shown in FIG. 10, since the nozzle surface 106A protrudes from the mask surface 108, there is a possibility that the recording paper is damaged. Further, in Patent Document 2, as shown in FIG. 11, the periphery of the nozzle surface 114 has a stepped shape, so that it is difficult to apply a water-repellent film to the nozzle surface 114. In addition, there is a possibility that the ink may enter the concave portion around the nozzle surface 114.
[0012]
On the other hand, in Patent Document 3, as shown in FIG. 12, a bar 122 or the like is provided in the opening 118A of the nozzle cover 118 in order to fill a gap between the plurality of heads 120, thereby preventing ink from entering. . In this case, it is possible to prevent the damage caused by the recording paper, but if the crosspiece 122 is formed in a warped state, the effect of preventing ink from entering may be impaired.
[0013]
Also, in Patent Document 4, it is possible to prevent damage due to recording paper by providing a bar 122 or the like in the opening 118A of the nozzle cover 118, but as shown in FIG. When wiping is performed, the bar 122 is in the way, and the sliding surface of the wiper 130 becomes uneven, which causes a problem that the nozzle surface 132 around the bar 122 cannot be wiped.
[0014]
[Patent Document 1]
JP-A-5-338160 [Patent Document 2]
Japanese Patent Application Laid-Open No. Hei 4-235054 [Patent Document 3]
JP-A-11-78056 [Patent Document 4]
JP-A-2002-67345
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and has as its object to provide an ink jet recording apparatus that covers an outer edge portion of a nozzle plate and prevents damage to a nozzle surface.
[0016]
[Means for Solving the Problems]
According to the first aspect of the present invention, an ink jet recording head that changes the pressure in a pressure chamber using an actuator to discharge ink droplets from a plurality of nozzle rows formed in a nozzle plate, and the ink jet recording head is fixed. A box-shaped head case, a box-shaped nozzle cover mounted on the head case, and having a cover surface covering an outer edge portion of the nozzle plate, and an opening for exposing the nozzle surface formed thereon; And a bar which covers the nozzle surface between the nozzle groups formed by the plurality of nozzle rows.
[0017]
According to the first aspect of the present invention, a cover surface that covers the outer edge of the nozzle plate is formed, and a nozzle cover having an opening that exposes the nozzle surface is provided. The nozzle surface covers the nozzle surface between the nozzle groups with the crosspiece.
[0018]
Thus, by providing the nozzle cover having the cover surface that covers the outer edge of the nozzle plate, the outer edge of the nozzle plate can be protected and the recording paper can be prevented from contacting the nozzle plate.
[0019]
In addition, by providing a bar at the opening of the nozzle cover, the exposed area of the nozzle surface is minimized, and the recording paper such as a bent corner or a jam is protected from contacting the nozzle surface. This prevents the water-repellent film on the nozzle surface from being damaged.
[0020]
According to a second aspect of the present invention, there is provided a float that deforms the peripheral wall of the nozzle cover in a direction of pushing down outwardly and deflects the nozzle cover in a direction to reduce a gap between the cover surface and the crosspiece and the nozzle surface of the nozzle plate. It is characterized by having prevention means.
[0021]
According to the second aspect of the present invention, the peripheral surface of the nozzle cover is deformed in a direction in which the peripheral wall of the nozzle cover is pushed down outward by the floating prevention means, so that a moment about the corner of the cover surface is formed on the cover surface and the crosspiece of the nozzle cover. In operation, the cover surface and the crosspiece are bent toward the inside of the head case. That is, the nozzle cover is bent in a direction to reduce the cover surface of the nozzle cover and the gap between the crosspiece and the nozzle plate.
[0022]
Although the nozzle cover is disposed between the nozzle plate and the recording paper, it is desirable that the nozzle plate be as close to the recording paper as possible. However, when the nozzle cover is formed to be thin, the nozzle cover has no rigidity and is formed in a warped state. Therefore, when the nozzle cover is mounted on the head cover, the cover surface of the nozzle cover and the crosspiece are connected to the nozzle plate. There is a risk of floating from.
[0023]
As described above, when the cover surface and the bar rise from the nozzle plate, ink enters between the cover surface and the bar and the nozzle plate, or the cover surface and the bar come into contact with the recording paper, and the recording paper is formed. Can lead to problems such as soiling.
[0024]
For this reason, the gap between the nozzle plate and the cover surface and the bar of the nozzle cover is reduced by the floating prevention means, so that ink may enter between the cover surface and the bar and the nozzle plate, or the nozzle cover and the outer edge portion of the nozzle cover may be formed. And the recording paper are prevented from coming into contact with each other.
[0025]
The invention described in claim 3 is characterized in that the floating prevention means is a rib protruding inside the peripheral wall of the nozzle cover or outside the peripheral wall of the head case.
[0026]
According to the third aspect of the present invention, the rib is projected from the inside of the peripheral wall of the nozzle cover or the outside of the head case, so that the peripheral wall of the nozzle cover is deformed in a direction in which the peripheral wall is pushed down to the outside. The nozzle cover can be bent in a direction to reduce the gap with the nozzle plate.
[0027]
The invention described in claim 4 is characterized in that a seal member is provided between the cover surface and the crosspiece and the nozzle plate.
[0028]
According to the fourth aspect of the present invention, the seal member is provided between the cover surface and the bar and the nozzle plate to prevent ink from entering between the cover surface and the bar and the nozzle plate.
[0029]
The invention according to claim 5 is characterized in that a notch portion that avoids the crosspiece is formed in a wiping member that is disposed at a print standby position of the inkjet recording head and that wipes the nozzle plate.
[0030]
According to the fifth aspect of the present invention, the wiping member for wiping the nozzle surface is provided with a notch for avoiding the crosspiece. When a bar is provided on the nozzle cover, the bar protrudes from the nozzle surface, so that when wiping the nozzle surface, the sliding surface of the wiping member becomes uneven, and the nozzle surface around the bar cannot be wiped. And wiping unevenness occurs.
[0031]
However, since the wiping member is provided with the notch for avoiding the bar, the wiping member wipes only the nozzle surface exposed from the nozzle cover, so that the nozzle surface in the vicinity of the bar can be reliably wiped. And uneven wiping does not occur.
[0032]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows an inkjet recording apparatus 10 according to an embodiment of the present invention. The inkjet recording apparatus 10 is provided with a carriage 16 that is moved by a main scanning mechanism 14 in a main scanning direction (indicated by an arrow A).
[0033]
As shown in FIG. 3, a head case 20 having a recording head 12 is fixed to the carriage 16 (described later). When the carriage 16 moves in the main scanning direction, the recording head 12 In response, the sub-scanning mechanism 18 (see FIG. 1) discharges ink droplets onto the recording paper P conveyed in the sub-scanning direction (indicated by the arrow B), and records an image on the entire surface of the recording paper P.
[0034]
Here, an outline of the recording head 12 will be described.
[0035]
As shown in FIG. 4, the recording head 12 has a total of seven substantially rectangular plates including a nozzle plate 22, communication hole plates 24 and 26, supply path plates 28 and 30, a pressure generation chamber plate 32, and a vibration plate 34. Are aligned and laminated, and joined by joining means such as an adhesive.
[0036]
The nozzle plate 22 is provided with a nozzle 36A for discharging ink, and the communication hole plates 24 and 26 are formed with communication holes 38 and 40, respectively. Further, supply holes 42 and 44 are formed in the supply path plates 28 and 30.
[0037]
The nozzle 36A, the communication holes 38 and 40, and the supply holes 42 and 44 communicate with each other in a state where the communication hole plates 24 and 26 and the supply path plates 28 and 30 are stacked, and the pressure generation formed in the pressure generation chamber plate 32 is performed. It is connected to the room 48.
[0038]
On the other hand, ink pools 51 and 52 are formed in the communication hole plates 24 and 26, respectively, and ink supplied from ink supply holes (not shown) is stored. In addition, a supply hole 54 is formed in the supply path plate 28 so as to be connected to the ink pool 52.
[0039]
Further, a supply groove 56 is formed in the supply path plate 30, and the ink pools 51 and 52 communicate with the pressure generating chamber 48 in a state where the communication hole plates 24 and 26 and the supply path plates 28 and 30 are stacked. ing.
[0040]
The vibration plate 34 is laminated on the pressure generating chamber plate 32, and a single-plate type piezoelectric element 58 as a pressure generating means is mounted on the vibration plate 34. The piezoelectric element 58 is bonded to a region corresponding to the pressure generating chamber 48 and is connected to a flexible wiring board 70 via a solder 68.
[0041]
With such a configuration, when the drive voltage waveform is applied to the piezoelectric element 58, the vibration plate 34 bends and deforms together with the piezoelectric element 58 to pressurize the ink in the pressure generating chamber 48 and eject ink droplets from the nozzle 36A.
[0042]
Here, a water-repellent film 60 is formed on the surface (front surface) of the nozzle plate 22 on the side where the ink is ejected, and the water-repellent film 60 prevents ink leakage around the nozzle 36A and prevents the nozzle 36A from leaking. The ejected ink droplets are always ejected perpendicular to the nozzle plate 22.
[0043]
As shown in FIG. 2, the nozzle plate 22 is provided with a plurality of nozzle rows 36 in which a plurality of nozzles 36 </ b> A are formed along the sub-scanning direction (arrow direction). A nozzle group 37 is configured.
[0044]
An inkjet recording device according to an embodiment of the present invention will be described.
[0045]
As shown in FIGS. 2 and 3, the head case 20 has a frame shape, and flange portions 20 </ b> A and 20 </ b> B are formed at both ends of the head case 20. The flange portion 20A is fixed in a state of being in contact with a peripheral portion of an insertion port 16A formed on the bottom surface of the carriage 16, and the recording head 12 is fixed to the flange portion 20B with an adhesive.
[0046]
Further, the other end of the head case 20 is covered with a box-shaped nozzle cover 72. Locking claws 74 are formed on a pair of side walls 72B of the nozzle cover 72, and when the flange portion 20B of the head case 20 passes, the locking claws 74 are locked to the flange portion 20B, and the nozzle cover 72 is fixed to the head. It is mounted on the case 20.
[0047]
An opening 72A is formed on the bottom surface of the nozzle cover 72. When the head case 20 is covered with the nozzle cover 72, the nozzle plate 22 (here, for convenience, the communication hole plates 24, 26, etc. (Not shown) while protecting the outer edge portion and exposing the nozzle surface 22A.
[0048]
Next, the gist and operation of the inkjet recording apparatus according to the embodiment of the present invention will be described.
[0049]
As shown in FIGS. 2 and 3, a single recording head 12 is fixed to the head case 20. A nozzle cover 72 that covers the outer edge of the nozzle plate 22 is attached to the head case 20, and a bar 80 is bridged over an opening 72 </ b> A of the nozzle cover 72. The crosspiece 80 is arranged on the nozzle surface 22A between the nozzle groups 37 so that the nozzle surface 22A is exposed for each nozzle group 37.
[0050]
By providing the nozzle cover 72 covering the outer edge of the nozzle plate 22, the outer edge of the nozzle plate 22 is protected. Further, by providing the bar 80 at the opening 72A of the nozzle cover 72, the exposed area of the nozzle surface 22A can be minimized, and the recording paper P such as a bent corner or a jam can be prevented from contacting the nozzle surface 22A. . This prevents the water-repellent film 60 (see FIG. 4) on the nozzle surface 22A from being damaged.
[0051]
On the other hand, as shown in FIGS. 2 and 5, a rib 82 as a floating prevention member protrudes from the outer surfaces of a pair of peripheral walls 20C constituting the head case 20 in parallel with the nozzle plate 22. When the nozzle cover 72 is attached to the nozzle cover 20, the peripheral wall of the nozzle cover 72 is deformed in a direction of pushing down outward.
[0052]
Accordingly, a moment about the corner of the cover surface 72C acts on the cover surface 72C and the crosspiece 80 of the nozzle cover 72, and the cover surface 72C and the crosspiece 80 are bent toward the inside of the head case 20.
[0053]
Here, as shown in FIG. 3, the nozzle cover 72 is disposed between the nozzle plate 22 and the recording paper P. In order to prevent the surface of the nozzle cover 72 from coming into contact with the recording paper P and becoming dirty. It is desired that the nozzle cover 72 be thin.
[0054]
However, when the nozzle cover 72 is formed to be thin, the nozzle cover 72 has no rigidity and is formed in a warped state. Therefore, as shown in FIG. 6, the nozzle cover 72 is mounted on the head case 20. Therefore, there is a possibility that the cover surface 72C of the nozzle cover 72 and the crosspiece 80 may float from the nozzle plate 22.
[0055]
As described above, when the cover surface 72C and the bar 80 are lifted off the nozzle plate 22, ink may enter between the cover surface 72C and the bar 80 and the nozzle plate 22, or the cover may be thickened as in the case where the cover is made thick. The recording paper may come into contact with the surface 72 </ b> C and the rail 80 and the recording paper may come into contact with each other, leading to problems such as soiling of the recording paper.
[0056]
Therefore, as shown in FIGS. 2 and 5, a rib 82 is protruded from the head case 20, and when the nozzle cover 72 is attached to the head case 20, the peripheral wall of the nozzle cover 72 is pushed down outward. The gap between the nozzle plate 22 and the cover surface 72C of the nozzle cover 72 and the nozzle plate 22 can be reduced, and the contact between the nozzle 80 and the outer edge of the nozzle cover 72 and the recording paper P can be prevented.
[0057]
Further, as shown in FIG. 7, a packing 84 is sandwiched between the head surface 20 and the cover surface 72C of the nozzle cover 72 and the bar 80. By making the ribs 82 protrude from the head case 20, the gap between the cover surface 72C of the nozzle cover 72 and the bar 80 and the nozzle plate 22 can be reduced. Since there is a possibility that ink may enter the gap between the cover surface 72C and the crosspiece 80 and the nozzle plate 22, the packing 84 is sandwiched between the cover surface 72C and the crosspiece 80 and the head case 20. Is kept out.
[0058]
Here, the ribs 82 protrude from the head case 20. However, when the nozzle cover 72 is mounted on the head case 20, it is only necessary to deform the peripheral wall of the nozzle cover 72 in a direction of pushing down outwardly. It is not limited to. For example, a rib may be provided on the inner surface side of the peripheral wall of the nozzle cover 72.
[0059]
As shown in FIGS. 1 and 8, a maintenance station 13 is provided at a print standby position of the recording head 12, and a rubber wiper 86 is provided at the maintenance station 13 so as to face the nozzle plate 22. Let me. As the recording head 12 moves on the wiper 86, the nozzle plate 22 is wiped and the nozzle surface 22A is cleaned.
[0060]
Here, the wiper 86 is provided with a plurality of notches 86A. The notch 86A is provided at a position facing the bar 80 provided on the nozzle cover 72 in a state where the nozzle plate 22 is in contact with the notch 86A.
[0061]
As a result, the wiper 86 wipes only the nozzle surface 22A exposed from the nozzle cover 72, so that the nozzle surface 22A in the vicinity of the crosspiece 80 can be reliably wiped, and uneven wiping does not occur.
[0062]
Further, in the present embodiment, the droplet is ejected by the pressure generated by the deformation of the piezoelectric actuator. However, the electromechanical transducer using the electrostatic force or the magnetic force, or the device for generating the pressure using the boiling phenomenon is used. Energy for discharging the droplet may be obtained by using another pressure generating means such as an electrothermal conversion element.
[0063]
Further, as the piezoelectric actuator, in addition to the single-plate type piezoelectric actuator used in the present embodiment, another type of actuator such as a vertical vibration type laminated piezoelectric actuator may be used.
[0064]
Further, in the present embodiment, the flow path is formed by laminating a plurality of plates, but the configuration, material, and the like of the plates are not limited to the above-described embodiments. For example, the present invention is similarly applicable to a head in which a flow path is integrally formed using a material such as ceramics, glass, resin, or silicon.
[0065]
Further, in the present embodiment, an ink jet recording head and an ink jet recording apparatus for recording characters and images by ejecting ink droplets on the recording paper P have been described as an example. However, the present invention is not limited to this. That is, the recording medium is not limited to paper, and the ejected liquid is not limited to ink.
[0066]
For example, it is necessary to discharge ink on a polymer film or glass to create a color filter for display, or to form a bump for component mounting by discharging molten solder onto a substrate. The present invention can be applied to the general droplet ejecting apparatus used for the present invention.
[0067]
【The invention's effect】
Since the present invention is configured as described above, according to the first aspect of the present invention, by providing the nozzle cover, the outer edge of the nozzle plate can be protected and the recording paper can be prevented from contacting. Also, by providing a bar at the opening of the nozzle cover, the exposed area of the nozzle surface is minimized, and the recording paper such as corner breaks and jams is protected from contacting the nozzle surface, so that the water repellent film on the nozzle surface is provided. Damage is prevented.
[0068]
According to the second aspect of the present invention, the gap between the nozzle plate and the cover surface of the nozzle cover and the nozzle plate is reduced by the floating prevention means, so that ink enters between the cover surface and the nozzle plate and the nozzle plate, It is possible to prevent the crosspiece and the outer edge of the cover from contacting the recording paper.
[0069]
According to the third aspect of the present invention, the rib is projected from the inside of the peripheral wall of the nozzle cover or the outside of the head case, so that the peripheral wall of the nozzle cover is deformed in a direction in which the peripheral wall is pushed down to the outside. The nozzle cover can be bent in a direction to reduce the gap with the nozzle plate.
[0070]
According to the fourth aspect of the present invention, the seal member is provided between the cover surface and the bar and the nozzle plate to prevent ink from entering between the cover surface and the bar and the nozzle plate.
[0071]
According to the fifth aspect of the present invention, since the wiping member is provided with the notch for avoiding the bar, the wiping member wipes only the nozzle surface exposed from the nozzle cover. Wiping can be reliably performed, and uneven wiping does not occur.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an inkjet recording apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a recording head and a nozzle cover provided in the ink jet recording apparatus according to the embodiment of the present invention.
FIG. 3 is a cross-sectional view illustrating a recording head, a head cover, and a nozzle cover provided in the inkjet recording apparatus according to the embodiment of the present invention.
FIG. 4 is a sectional view showing a recording head provided in the ink jet recording apparatus according to the embodiment of the present invention.
FIG. 5 is a sectional view taken along line 5-5 in FIG. 2;
FIG. 6 is a cross-sectional view showing a state where the nozzle cover is bent.
FIG. 7 is a sectional view taken along line 7-7 of FIG. 2;
FIG. 8 is a cross-sectional view showing a wiper provided in the ink jet recording apparatus according to the embodiment of the present invention.
FIG. 9 is a perspective view showing a conventional ink jet recording apparatus.
FIG. 10 is a perspective view showing another example of a conventional inkjet recording apparatus.
FIG. 11 is a cross-sectional view illustrating another example of a conventional inkjet recording apparatus.
FIG. 12 is a perspective view showing another example of a conventional ink jet recording apparatus.
FIG. 13 is a perspective view showing another example of a conventional inkjet recording apparatus.
14 is a cross-sectional view illustrating a relationship between the inkjet recording apparatus of FIG. 12 and a wiper.
[Explanation of symbols]
Reference Signs List 10 inkjet recording device 12 recording head 20 head case 37 nozzle group 72 nozzle cover 80 crosspiece 82 rib (floating prevention means)
84 Packing (seal member)
86 Wiper (wiping member)
86A Notch

Claims (5)

An ink jet recording head that ejects ink droplets from a plurality of nozzle rows formed in a nozzle plate by changing the pressure in a pressure chamber using an actuator,
A box-shaped head case to which the inkjet recording head is fixed,
A box-shaped nozzle cover mounted on the head case and having an opening for exposing the nozzle surface, together with a cover surface covering the outer edge of the nozzle plate,
A bridge spanning the opening, and covering a nozzle surface between nozzle groups constituted by a plurality of nozzle rows,
An inkjet recording apparatus comprising: There is provided a floating prevention means for deforming the peripheral wall of the nozzle cover in a direction of pushing down outwardly and bending the nozzle cover in a direction to reduce a gap between the cover surface and the crosspiece and the nozzle surface of the nozzle plate. The inkjet recording device according to claim 1. 3. The ink jet recording apparatus according to claim 2, wherein the lifting prevention means is a rib protruding inside a peripheral wall of the nozzle cover or outside a peripheral wall of the head case. The inkjet recording apparatus according to any one of claims 1 to 3, wherein a seal member is provided between the cover surface and the crosspiece and the nozzle plate. The ink jet recording apparatus according to any one of claims 1 to 4, wherein the wiping member disposed at a print standby position of the ink jet recording head and wiping the nozzle surface is formed with a notch portion avoiding the crosspiece. Recording device.

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