Packaging format for liquid ejection heads

Abstract

To provide a package form which reduces the attachment of dust onto a discharge surface of a liquid discharge head.SOLUTION: A packaging form for packaging a liquid discharge head including a detachable protection member includes a protection member for covering a discharge port face of the liquid discharge head, a cushioning material which is mounted to opposite ends of the liquid discharge head in a longitudinal direction, and a bag member for packaging the liquid discharge head. The liquid discharge head, the protection member, and the cushioning material are stored in the bag member in a secured state, and hermetically closed in a pressure reduced state.SELECTED DRAWING: Figure 14

Description

[Technical Field]

[0001] The present disclosure relates to a packaging form for a liquid ejection head, in which a liquid ejection head used in a liquid ejection device is housed in a storage bag. [Background technology]

[0002] Liquid ejection devices include serial scan types that perform recording operations while moving a carriage, and page-wide types that perform recording operations while fixing the carriage and transporting only the recording medium using a liquid ejection head sized to correspond to the width of the recording medium. When transporting a liquid ejection head, a protective member that covers the entire surface of the print chip is attached to the liquid ejection head to prevent damage or contamination to the print chip. The liquid ejection head with the protective member attached is then placed in a storage bag and placed in a cardboard box together with cushioning material. Patent Document 1, an example of such a storage bag, describes a toner cartridge that is stored in a storage bag with a zipper member when transported. After the cartridge in Patent Document 1 is placed in this bag, it is held on both sides by cushioning material such as styrofoam and packed in a cardboard box. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-72781 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it is required that the protective member attached to the liquid ejection head does not come off from the liquid ejection head during packaging, transportation, etc. The storage bag disclosed in Patent Document 1 does not require a protective member like that required for a liquid ejection head, and therefore does not anticipate the protective member coming off from the liquid ejection head.

[0005] An object of the present disclosure is to provide a packaging form that can prevent the protective member from coming off and thus prevent damage and contamination to the ejection surface of the liquid ejection head. [Means for solving the problem]

[0006] In order to achieve the above object, the present disclosure provides a packaging form for a liquid ejection head that packages a liquid ejection head equipped with a detachable protective member, the packaging form comprising a protective member that covers the ejection outlet surface of the liquid ejection head, cushioning material attached to both longitudinal ends of the liquid ejection head, and a bag member that packages the liquid ejection head, and is characterized in that the liquid ejection head, the protective member, and the cushioning material are stored in a fixed state within the bag member and sealed under reduced pressure. [Effects of the Invention]

[0007] According to the above-described configuration, the protective member is prevented from coming off, and it is possible to prevent damage and contamination to the ejection surface of the liquid ejection head. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a liquid ejection head according to an embodiment of the present disclosure, as viewed from below. [Figure 2] 1 is a perspective view of a liquid ejection head according to an embodiment of the present disclosure, as viewed from above; [Figure 3] 1 is a schematic cross-sectional view of a liquid ejection head according to an embodiment of the present disclosure. [Figure 4] 1 is a schematic cross-sectional view of a liquid ejection head according to an embodiment of the present disclosure. [Figure 5] 1 is a schematic cross-sectional view of a liquid ejection head according to an embodiment of the present disclosure. [Figure 6] 10A to 10C are explanatory diagrams showing a procedure for removing a protective member from a liquid ejection head according to an embodiment of the present disclosure. [Figure 7] 1 is a schematic perspective view of a liquid ejection device according to an embodiment of the present disclosure, with a liquid ejection head attached thereto; [Figure 8] FIG. 2 is a partial enlarged view showing one end of a liquid ejection head according to an embodiment of the present disclosure. [Figure 9] FIG. 10 is a partial enlarged view showing the other end of the liquid ejection head according to the embodiment of the present disclosure. [Figure 10] FIG. 1 is a perspective view of one end of a liquid ejection head according to an embodiment of the present disclosure, as viewed from above. [Figure 11] FIG. 1 is a perspective view of a liquid ejection head according to an embodiment of the present disclosure with buffer materials attached to one end and the other end thereof. [Figure 12] FIG. 2 is a perspective view of a cushioning material of a liquid ejection head according to an embodiment of the present disclosure. [Figure 13] 1A to 1C are a top view, a side view, and a cross-sectional view of a liquid ejection head 10 according to an embodiment of the present disclosure, with buffer materials attached to one end and the other end thereof. [Figure 14] 1A and 1B are perspective views of a state in which the liquid ejection head is inserted into a bag member, and explanatory views illustrating a state in which the inside of the bag member is decompressed and sealed. [Figure 15] FIG. 1 is a perspective view of a liquid ejection head according to an embodiment of the present disclosure with a bag member opened. [Figure 16] 10A and 10B are a perspective view and a side view of a liquid ejection head 10 according to a second embodiment of the present disclosure with a buffer material attached thereto. DETAILED DESCRIPTION OF THE INVENTION

[0009] (First embodiment) Hereinafter, examples of embodiments of the present disclosure will be described with reference to the drawings.

[0010] (liquid ejection head) Fig. 1 is a perspective view of a liquid ejection head 10 according to an embodiment of the present disclosure as viewed from below, Fig. 2 is a perspective view of the liquid ejection head 10 according to an embodiment of the present disclosure as viewed from above, and Figs. 3 to 5 are each a schematic cross-sectional view of the liquid ejection head 10 according to an embodiment of the present disclosure.

[0011] The liquid ejection head 10 according to an embodiment of the present disclosure is a so-called page-wide type head in which recording element substrates 100 that eject liquid are arranged in the longitudinal direction. As shown in FIG. 2, a protective member 200 is removably attached to the liquid ejection head 10 to prevent damage or contamination of the recording element substrates and the like during transportation or when the liquid ejection head 10 is attached to or detached from an apparatus. Regarding attachment and detachment of the protective member 200 to and from the liquid ejection head 10, the position where the engagement portions A1 and A2 of the protective member 200 are attached to the liquid ejection head 10 is referred to as an engaged position, as will be described in detail later. Furthermore, the position where the engagement portions A1 and A2 of the protective member 200 are located at the guide openings C1 and C2 of the liquid ejection head 10 is referred to as a released position.

[0012] As shown in FIG. 1, the liquid ejection head 10 of the present disclosure has a plurality of recording element substrates 100 arranged in a longitudinal direction (first direction X), each having an ejection port for ejecting liquid. The plurality of recording element substrates 100 constitutes an ejection surface of the liquid ejection head 10. A cap surface forming member 300 is formed on the ejection surface of the liquid ejection head 10 of the present disclosure so as to surround the periphery of the plurality of recording element substrates 100. The liquid ejection head 10 has a pin 700a at one end in the longitudinal direction of the liquid ejection head 10 and pins 700b and 700c at the other end. The liquid ejection head 10 also has a first positioning member 301 vertically below one end of the liquid ejection head 10. The liquid ejection head 10 also has a second positioning member 302 vertically below the other end of the liquid ejection head.

[0013] As shown in FIGS. 2(a) and 2(b), a protective member 200 is detachably attached to the liquid ejection head 10. To facilitate attachment and detachment of the protective member 200, the liquid ejection head 10 has two guide portions B2 and two guide openings C2 along the first direction X. The liquid ejection head 10 also has two guide portions B1 (see FIG. 3) and two guide openings C1 along the first direction X on a side opposite to the side shown in FIG. 1. Meanwhile, the protective member 200 has engagement portions A1 and A2 (see FIG. 3) that engage with the guide portions B1 and B2 of the liquid ejection head 10, respectively. The liquid ejection head 10 also has a fixing opening 103 for fixing the protective member 200. In this embodiment, the liquid ejection head 10 has two guide portions and two guide openings, but this is not limited thereto and may have one, or three or more.

[0014] In the above-described configuration for attachment and detachment, the guide portion B1 of the liquid ejection head 10 has, at one end in the first direction X, an abutment portion with which the engagement portion A1 of the protection member 200 abuts. Furthermore, when the liquid ejection head 10 and the protection member 200 are fixed, the other end of the engagement portion A1 opposite to the one end in the first direction is connected to the guide opening C1 of the liquid ejection head 10.

[0015] (protective material) By attaching the protective member 200 to the liquid ejection head 10, the protective member 200 functions to prevent damage and contamination of the recording element substrate and the like during transportation of the liquid ejection head or when the liquid ejection head is attached to or detached from an apparatus. By attaching the liquid ejection head 10 to an apparatus while the protective member 200 is still attached, and then removing the protective member 200, it is possible to prevent damage and contamination of the liquid ejection head 10 during replacement work.

[0016] As shown in FIG. 3, the protective member 200 has a protective portion 200A that covers the ejection surface 100 of the liquid ejection head 10. The protective member 200 has two engagement portions A1 and A2 that can engage with the two guide portions B1 and B2 of the liquid ejection head 10 and that are shorter in length in the first direction X than the two guide openings C1 and C2. The protective member 200 also engages with the fixed opening 103 (see FIG. 4) of the liquid ejection head 10 at an engagement position where the two guide portions B1 and B2 of the liquid ejection head 10 engage with the two engagement portions A1 and A2. Furthermore, the protective member 200 restricts movement of the protective member 200 in the first direction X relative to the liquid ejection head 10 at an engagement position where the two guide portions B1 and B2 of the liquid ejection head 10 engage with the two engagement portions A1 and A2. The protective member 200 also has at least one fixing portion 202 (see FIG. 4) that fixes the liquid ejection head 10 and the protective member 200 together.

[0017] 4, the protective member 200 includes two engaging portions A1 and A2 and a fixing portion 202 disposed in a third direction Z that intersects with the first direction X and the second direction Y. In this embodiment, the direction that intersects with the first direction X on a plane is defined as the third direction Z, and the vertical direction is defined as the second direction Y.

[0018] As shown in FIG. 4, the fixing portion 202 has a deformable shape and can move from a fixing position (position in FIG. 4) where it engages with and fixes the fixing opening 103 to a release position (position in FIG. 5) where it releases the fixation relative to the liquid ejection head 10. In this embodiment, the fixing portion 202 has a protrusion 202A (see FIG. 3, etc.) on the upper side and a release portion 202B (see FIG. 3, etc.) on the lower side, and is attached so as to be rotatable (swingable) in the second direction Y. The fixing portion 202 is molded as an integral part with the protective member 200 and is supported by a rotation shaft 202C (see FIG. 6, etc.). The fixing portion 202 may be formed of a resin member such as polypropylene. In this embodiment, the fixing portion 202 is formed as an integral part with the protective member 200, but is not limited to this and may be formed as a separate part from the protective member 200. In this case, the fixing portion 202 may be formed of a resin containing a filler, a metal, or the like. Furthermore, the shape of the fixing part may be any shape that allows the protective member and the liquid ejection head to be fixed together, and the fixing part may be formed from an expandable member with a protrusion at the tip that engages with the fixing opening 103 of the liquid ejection head to fix it.

[0019] The protective member 200 is attached to the liquid ejection head 10 by engaging the guide portion B1 with the engagement portion A1, and the guide portion B2 with the engagement portion A2, respectively, and by fixing the fixed opening 103 with the fixed portion 202 (see FIG. 4). In this embodiment, the fixed opening 103 and the fixed portion 202 are formed at the ends of the liquid ejection head 10 and the protective member 200, but this is not limitative and they may be located at any position where the fixed portion 202 and the fixed opening 103 can be engaged / disengaged.

[0020] (How to remove the protective material) A method for removing the protective member 200 from the liquid ejection head 10 equipped with the protective member 200 will be described.

[0021] 6A and 6B are diagrams illustrating a procedure for removing the protective member 200 from the liquid ejection head 10 according to an embodiment of the present disclosure. Regarding the removal of the protective member 200 from the liquid ejection head 10, as shown in FIG. 5, the disengagement portion 202B of the fixing portion 202 is pressed and moves (rotates), which causes the protrusion 202A to move (rotate). The movement (rotation) of the protrusion 202A disengages the fixed opening 103 from the protrusion 202A. As a result, the protective member 200 is configured to be movable in the first direction X, as shown in FIG. 6A.

[0022] Next, the fixing portion 202 is released from the fixing opening 103 by a user operation, and the protective member 200 is moved a predetermined amount in the first direction X from the engagement position to a release position where the engagement between the guide portion B1 and the engagement portion A1 is released (see FIG. 6(a)). By moving the protective member 200 in a second direction Y intersecting the first direction X, the engagement portion A1 is moved to the position of the guide opening C1, as shown in FIG. 6(b), and the protective member 200 is removed from the liquid ejection head 10.

[0023] (Liquid discharge device) FIG. 7 is a schematic perspective view of the liquid ejection device according to this embodiment when the liquid ejection head 10 is attached.

[0024] The liquid ejection device includes a frame, a sphere 500 for positioning the liquid ejection head 10, and a holder (not shown) for holding pins 700a, 700b, and 700c of the liquid ejection head 10. The liquid ejection head 10 is detachably attached to the liquid ejection device, and when the liquid ejection head 10 is attached to the liquid ejection device, the pins 700a, 700b, and 700c are each held by the holder of the liquid ejection device. The liquid ejection head 10 is then lowered onto the sphere 500, and the first positioning member 301 and the second positioning member 302 of the liquid ejection head 10 are each positioned and held by the sphere 500. The liquid ejection head 10 of this embodiment ejects liquid from the recording element substrate 100 onto a recording medium being transported from the downstream side in the transport direction, thereby performing recording.

[0025] FIG. 8 is a partial enlarged view showing one end of the liquid ejection head 10 according to this embodiment, and FIG. 9 is a partial enlarged view showing the other end of the liquid ejection head 10 according to this embodiment. The first positioning member 301 of the liquid ejection head 10 has a conical recess 401 facing vertically downward. The recess 401 is centered and engaged with a sphere 500a. This allows the three translational degrees of freedom (X / Y / Z directions in the figure) of one end of the liquid ejection head 10 to be fixed. Furthermore, as shown in FIG. 9, the second positioning member 302 of the liquid ejection head 10 has two tapered recesses 402 and 403. By abutting against the sphere 500b, the recess 402 fixes the rotational degrees of freedom about the axis normal to the surface constituting the recording element substrate 100 (rotation about the Z axis) and the rotational degrees of freedom about the axis normal to the longitudinal direction of the liquid ejection head (rotation about the X axis). The recess 403 of the second positioning member 302 engages with the sphere 500c, thereby fixing the degree of rotational freedom about the longitudinal direction of the liquid ejection head 10 (rotation around the Y axis).

[0026] In this way, one end and the other end of the liquid ejection head 10 can be fixed by engaging with each of the spheres.

[0027] Fig. 10(a) is a perspective view of one end of the liquid ejection head 10 according to this embodiment, as seen from above. Fig. 10(b) is a schematic cross-sectional view taken along line Xb-Xb in Fig. 10(a). The first positioning member 301 is fixed in a state where it is positioned relative to the recording element substrate, but if the fixing method is performed using fixing screws 404 as in this embodiment, it is necessary to restrict the Z direction.

[0028] 10(a), one end of the liquid ejection head 10 is provided with three fixing screws 404 for fixing the liquid ejection head main body 10a and the first positioning member 301, and three adjustment screws 405 for adjusting the height of the liquid ejection head 10 in the Z direction. The liquid ejection head 10 can be regulated in the X and Y directions by fixing the screws while restricting the first positioning member 301. The liquid ejection head 10 can be regulated in the Z direction by adjusting the adjustment screws 405, and can be attached with high precision by fixing the screws.

[0029] (Liquid ejection head packaging) Fig. 11 is a perspective view of a liquid ejection head 10 according to an embodiment of the present disclosure, with buffer materials attached to one end and the other end thereof. Fig. 12 is a perspective see-through view of the buffer material according to an embodiment of the present disclosure.

[0030] As described above, in this embodiment, the liquid ejection head 10 is packaged in a storage bag. At this time, the protective member 200 is attached to the liquid ejection head 10. Then, cushioning materials 600a and 600b are attached to the liquid ejection head 10 at positions that sandwich the protective member 200 and prevent the protective member 200 from being removed. As shown in FIG. 12, the cushioning material 600a is formed by joining a first member 601 and a second member 602 by thermal welding. The first member 601 has a first through-hole 603 shaped to correspond to the shape of one end of the liquid ejection head 10 and to be able to receive this end. Meanwhile, the second member 602 has a second through-hole 604 shaped to correspond to the shape of a pin 700a protruding further from one end of the liquid ejection head 10 and to be able to receive this pin. The second member 602 also has an abutment surface 605 facing the first through-hole 603, against which one end of the liquid ejection head 10 received in the first through-hole 603 abuts. The cushioning material 600b attached to the opposite end of the liquid ejection head 10 has the same shape as the cushioning material 600a, and is attached to the other end of the liquid ejection head 10.

[0031] The material of the buffer materials 600a, 600b may be, for example, a foam made primarily of polyethylene. This allows the two members to be joined by thermal welding. Note that, although the buffer material in this embodiment is formed by joining two members, a buffer material formed as an integral unit and having the above-mentioned through holes formed therein may also be used.

[0032] Fig. 13(a) is a top view of the liquid ejection head 10 according to this embodiment, with cushioning materials 600a and 600b attached to one end and the other end, respectively, and Fig. 13(b) is a side view thereof. Fig. 13(c) is a cross-sectional view taken along line XIIIc-XIIIc in Fig. 13(b), and Fig. 13(d) is a cross-sectional view taken along line XIIId-XIIId in Fig. 13(a).

[0033] The first buffer material 600a and the second buffer material 600b are attached so as to restrict the protection member 200 attached to the liquid ejection head 10. That is, as shown in FIG. 13(b), the buffer materials 600a and 600b are respectively positioned near both longitudinal ends of the protection member 200. Also, as shown in FIGS. 13(a) to 13(d), the area of ​​the buffer materials 600a and 600b in a direction perpendicular to the longitudinal direction of the protection member 200 is larger than the area where the protection member 200 exists. As a result, even if an external force acts on the liquid ejection head 10 to which the protection member 200 is attached, the external force is absorbed by the buffer materials 600a and 600b, preventing the external force from acting directly on the protection member 200. For example, even if the liquid ejection head 10 is dropped, the impact is absorbed by the first and second buffer materials 600a and 600b, preventing the impact from acting directly on the protection member 200. At the same time, even if the protective member 200 were to come off the liquid ejection head 10, its movement is restricted by the buffer material located nearby. Furthermore, since the pins 700a, 700b protruding from the end of the liquid ejection head 10 are stored in the buffer materials 600a, 600b, it is possible to prevent the storage bag from being ruptured by the pin-like protrusions on the liquid ejection head 10 when it receives an impact such as being dropped. In addition to the shock absorption provided by the buffer materials 600a and 600b themselves, this embodiment also has the following shock absorption structure. As shown in FIG. 13(d), this embodiment is configured to form a space S between the positioning member 302 and the abutment surface 605 of the buffer material 600b. This allows the buffer material to suppress the shock to the liquid ejection head member 110 even if the liquid ejection head is accidentally dropped in the longitudinal direction. Meanwhile, because the positioning member does not come into contact with the buffer material, it is possible to prevent the impact on installation accuracy.

[0034] 11 and 13, the cushioning materials 600a and 600b are disposed close to both longitudinal ends of the protective member 200. Then, as shown in FIG. 14, which will be described later, the bag member 800 is depressurized, thereby fixing it to the liquid ejection head 10. This restricts longitudinal movement of the protective member 200, making it impossible to remove. Furthermore, the cushioning materials 600a and 600b are configured to cover the corners and pins at both ends of the liquid ejection head 10, thereby preventing damage to the bag member by the corners and pins at both ends even if external forces such as vibration or dropping are applied during transportation. Therefore, the depressurized state of the bag member 800 is maintained, making it impossible to remove the protective member.

[0035] Fig. 14(a) is a perspective view showing a state in which the liquid ejection head 10 is inserted into the bag member 800, and Fig. 14(b) is an explanatory diagram showing a state in which the inside of the bag member 800 is decompressed and sealed. Fig. 15 is a perspective view showing a state in which the bag member 800 of the liquid ejection head 10 according to this embodiment is opened.

[0036] As shown in FIG. 14( a), the liquid ejection head 10 of this embodiment is housed in a bag member 800. In this embodiment, the bag member 800 is a three-sided welded bag having an opening 801. The liquid ejection head 10 is inserted into the bag member 800 through the opening 801. The bag member 800 is then depressurized, and the opening 801 is heat-sealed to form a heat-sealed portion 802, sealing the bag member 800. As shown in FIG. 14( b), depressurizing the inside of the bag member 800 reduces the space within the bag member 800, and the bag member 800 comes into close contact with the liquid ejection head 10 and the cushioning materials 600a and 600b. As a result, the cushioning materials 600a and 600b are pressed against the liquid ejection head 10 and are substantially fixed in place. The cushioning materials 600a and 600b are attached adjacent to both longitudinal ends of the protective member 200, and are fixed in place to restrict longitudinal sliding of the protective member 200. At this time, the pressure is reduced until the bag member 800 presses the cushioning material 600 against the liquid ejection head 10. The cushioning materials 600a, 600b are pressed against the liquid ejection head 10 and are substantially fixed, thereby further restricting the movement of the protection member 200 in the longitudinal direction.

[0037] The protective member 200 is engaged with the liquid ejection head 10 by the fixing portion 202, but there is a risk that this engagement may loosen due to external force or the like. In this embodiment, even if the engagement between the fixing portion 202 of the protective member 200 and the fixed opening 103 loosens, the protective member 200 can prevent the protective member 200 from falling off during transportation due to the restriction of the buffer material 600a and the buffer material 600b. Furthermore, since the buffer material 600 has the second through-hole 604 in the longitudinal direction of the liquid ejection head 10, the air on the distal side of the bag member 800, on the opposite side of the opening 801, is also decompressed. This allows the pressure inside the bag member 800 to be reduced.

[0038] 14(b), when the pressure is reduced, a force F is applied to the liquid ejection head 10 together with the cushioning materials 600a and 600b. When the pressure is reduced, the bag member 800 of the liquid ejection head 10 easily comes into close contact with the liquid ejection head 10 and the protective member 200 without forming a large decompression space between the cushioning materials at both ends, making it easier to press and fix the cushioning materials against the liquid ejection head.

[0039] The bag member 800 also has an opening means for opening the bag member 800 at its longitudinal end. In this embodiment, the opening means is a notch 803, which is provided on the end side along which the protective member 200 moves in the direction in which it is fixed to the liquid ejection head 10 (see FIG. 14(a)). The notch 803 serves as a trigger for opening the bag member 800 and assists in opening the bag member 800. After the bag member 800 is opened, the liquid ejection head 10 can be removed from the bag member 800 by moving the liquid ejection head (arrow C). Specifically, by opening the bag member 800 in the first direction (arrow X) shown in FIG. 6, the moving direction of the liquid ejection head 10 and the removing direction of the protective member become the same, as shown in FIG. 15, and the liquid ejection head can be removed without the protective member coming off. Therefore, the recording element substrate 100 can be protected even when the liquid ejection head 10 is removed from the bag member 800.

[0040] (Second embodiment) A second embodiment of the present disclosure will be described. Explanations of functions and details similar to those of the first embodiment of the present disclosure will be omitted, and differences will be described.

[0041] FIG. 16 is a perspective view and a side view of a liquid ejection head 10 and a cushioning material according to the second embodiment. In the first embodiment, the cushioning material is formed by thermally welding two members, but the present disclosure is not limited to this. As shown in FIG. 16, the cushioning material 1600 includes a first member 601, a second member 602, and a third member 606. The first member 601, the second member 602, and the third member 606 are each thermally welded and joined. The third member 606 is fixed so as to cover the fixing portion 202 of the protective member 200. This ensures that the fixing portion 202 of the protective member is pressed securely against the liquid ejection head 10 within the decompressed bag member 800, preventing the fixing portion 202 from loosening and securing the protective member 200.

[0042] (Other embodiments) The present disclosure includes configurations typified by the following examples of packaging forms for liquid ejection heads.

[0043] <Configuration 1> A packaging form for a liquid ejection head that packages a liquid ejection head provided with a detachable protective member, a protective member for covering the ejection port surface of the liquid ejection head; a buffer material attached to both ends of the liquid ejection head in the longitudinal direction; a bag member for packaging the liquid ejection head, A packaging form for a liquid ejection head, characterized in that the liquid ejection head, the protection member, and the cushioning material are housed in the bag member in a fixed state, and are sealed under a reduced pressure.

[0044] <Configuration 2> 2. The packaging form for the liquid ejection head according to configuration 1, wherein the protective member is removed by moving it in the longitudinal direction of the liquid ejection head.

[0045] <Configuration 3> 3. The packaging form for the liquid ejection head according to configuration 1 or 2, wherein the cushioning material is disposed in an area that limits the movable area of ​​the protection member.

[0046] <Configuration 4> 4. The packaging form for the liquid ejection head according to any one of configurations 1 to 3, wherein the cushioning material has a through-hole in the longitudinal direction of the liquid ejection head.

[0047] <Configuration 5> 5. A packaging form for a liquid ejection head according to configuration 4, wherein the through hole of the cushioning material has a surface that abuts against the liquid ejection head.

[0048] <Configuration 6> 6. A packaging form for a liquid ejection head according to configuration 4 or 5, wherein the cushioning material accommodates a protrusion in the longitudinal direction of the liquid ejection head within the through-hole.

[0049] <Configuration 7> A packaging form for a liquid ejection head according to configuration 5, wherein the liquid ejection head has positioning portions at both ends in the longitudinal direction for positioning the liquid ejection head in the liquid ejection device.

[0050] <Configuration 8> 8. The packaging form for a liquid ejection head according to configuration 7, wherein the abutting surface of the cushioning material is configured not to abut against the positioning portion at least in the longitudinal direction.

[0051] <Configuration 9> 5. A packaging form for a liquid ejection head according to configuration 4, wherein the cushioning material is formed by joining at least two cushioning materials having different opening areas of the through holes.

[0052] <Configuration 10> 10. The packaging form for the liquid ejection head according to configuration 9, wherein the two cushioning materials are joined by thermal welding.

[0053] <Configuration 11> 11. A packaging form for a liquid ejection head according to any one of configurations 1 to 10, wherein the cushioning material presses an engaging portion with the liquid ejection head that restricts longitudinal movement of the protective member.

[0054] <Configuration 12> 12. The packaging form for the liquid ejection head according to any one of configurations 1 to 11, wherein the bag member has opening means for opening an end portion in the longitudinal direction.

[0055] <Configuration 13> 13. A packaging form for a liquid ejection head according to configuration 12, wherein the opening means is provided on the end side where the protective member moves in the direction in which it is fixed to the liquid ejection head. [Explanation of symbols]

[0056] 10 Liquid ejection head 200 Protective material 600a,b buffer material 800 bags of materials

Claims

1. A liquid ejection head having an ejection port surface on which ejection ports for ejecting liquid are formed; a protective member that is detachable from the liquid ejection head and covers the ejection port surface; a buffer material attached to both ends of the liquid ejection head in the longitudinal direction; a bag member for packaging the liquid ejection head, A package in which the liquid ejection head, the protective member, and the cushioning material are housed in the bag member in a fixed state, and are sealed under a reduced pressure.

2. 2. The package according to claim 1, wherein the protective member is detachable by moving it in a longitudinal direction relative to the liquid ejection head.

3. 3. The package according to claim 1, wherein the cushioning material is disposed in an area that limits the movable area of ​​the protection member.

4. 2. The package according to claim 1, wherein the cushioning material has a through-hole in the longitudinal direction of the liquid ejection head.

5. 5. The package according to claim 4, wherein the through hole of the cushioning material has a surface that abuts against the liquid ejection head.

6. 5. The package according to claim 4, wherein the cushioning material accommodates a protrusion of the liquid ejection head in the longitudinal direction within the through-hole.

7. 6. The package according to claim 5, wherein the liquid discharge head has positioning portions at both ends in the longitudinal direction for positioning the liquid discharge head relative to the liquid discharge device.

8. 8. The package according to claim 7, wherein the abutting surface of the buffer material is configured not to abut against the positioning portion at least in the longitudinal direction.

9. 5. The package according to claim 4, wherein the cushioning material is formed by joining at least two cushioning materials having different opening areas of the through-hole.

10. 10. The package according to claim 9, wherein the two cushioning materials are joined by thermal welding.

11. 2. The package according to claim 1, wherein the cushioning material presses an engaging portion with the liquid ejection head that restricts movement of the protection member in the longitudinal direction.

12. 2. The package according to claim 1, wherein the bag member has opening means for opening the longitudinal ends thereof.

13. 13. The package according to claim 12, wherein the opening means is provided on an end side of the protective member that moves in a direction in which the protective member is fixed to the liquid ejection head.

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