JP2006159735A - Liquid discharging head and imaging device using this liquid discharging head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid discharging head which is free from the generation of a peeling such as cracks in an adhesive, the mixing of a plurality of different kinds of liquids and the clogging of a discharge nozzle due to the crowding-out of the adhesive, after connecting a container capable of storing a plurality of different kinds of liquids in one piece, a holder support member and a recording element substrate of a recording head together. <P>SOLUTION: A projecting shape or a recessed part is formed on a surface connecting with the recording element substrate of the support member, and the recessed shape or the projecting shape fitted to the recording element substrate of the recording head, is formed in the recording element substrate. Thus either of these shapes is joined using the adhesive and consequently, the peeling such as the cracks does not occur in the adhesive. Further, the surplus overflowing adhesive is absorbed by the recessed shape part for adhesive absorption, in case the applied amount of the adhesive is excessively large, and also the the clogging of the discharge nozzle due to the protrusion of the adhesive can be prevented from occurring. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inkjet recording head, a method for manufacturing the inkjet recording head, and an inkjet recording apparatus.

  The ink jet recording apparatus is a so-called non-impact recording type recording apparatus. High-speed recording and recording on various recording media are possible, and noise is hardly generated during recording. For this reason, it is widely adopted as a device that bears a recording mechanism such as a printer, a word processor, a facsimile machine, and a copying machine.

  As one of the ink jet recording methods, there is a method using an electrothermal conversion element. Generally, an ink jet recording head for ejecting ink droplets and an ink for the ink jet recording head are used as components when recording by ink jet. And at least a supply system for supplying. An ink jet recording head using an electrothermal conversion element is provided with an electrothermal conversion element in a pressurizing chamber that communicates with a supply path of an ink supply system and is formed with an ejection port. In this case, thermal energy is given to the ink, and ink droplets are ejected using the pressure of the bubbles when the ink is foamed (boiling) caused by the phase change of the ink. In another form of inkjet recording, ink is supplied from an ink cartridge filled with ink through a filter and a flow path, and the supplied ink is ejected from a nozzle by driving a piezoelectric vibrator or the like. There are also things.

  In this ink jet recording apparatus, a form using a multi-color / processing liquid is increasing due to a demand for high image quality / high definition recording. On the other hand, the recording apparatus itself is required to be downsized.

  For this reason, an ink jet cartridge in which a recording head unit and a liquid storage unit are integrated is used, and a plurality of liquid storage units capable of storing a plurality of types of liquids are also used for containers used in the cartridge. Integrated containers are being used. In such a cartridge, the recording head unit is provided with a plurality of ink supply paths so that a plurality of different types of liquid can be discharged. Further, as a form of the recording head, there is a form having a plurality of ink discharge port arrays.

  On the other hand, some cartridges are configured as a recording head unit, a holder integrated with the recording head unit, and a container that is detachable from the holder. In this case, although there are a plurality of types of liquids stored in one holder, the liquid storage unit is used depending on the usage form, such as being detached for each single color or being integrally removed.

As a coupling form of the recording head unit to the container and the holder capable of integrally storing such a plurality of types of liquids, the recording element substrate and the support member are bonded together with an adhesive or the like as shown in FIG. Japanese Patent Laid-Open No. 2002-154209 discloses such a configuration. Further, the surface on which the recording element substrate and the support member are bonded to each other was a flat surface.
JP 2002-154209 A

  However, these conventional ink jet recording heads have the following problems.

  At the joint between the recording element substrate and the support member of the recording head unit, the stress generated due to the difference in linear expansion between the support member and the recording element substrate due to the thermal history in the manufacturing process after the joining process, or the adhesive itself As a result, a stress such as cracking occurs in the adhesive, and when a recording element substrate having a plurality of supply ports is used, a plurality of types of liquids are mixed. It could cause color mixing problems.

  In addition, when the joining surface of the recording element substrate of the recording head unit and the support member is a flat surface, the adhesive overflows due to variations in the amount of adhesive applied, and the protrusion to the supply flow path or supply port occurs. Sometimes clogged up.

  Accordingly, an object of the present invention is to solve the above-described problems, and after joining the recording element substrate and the support member of the recording head unit, the adhesive does not peel off such as cracks, and a plurality of supply ports are provided. In the case of using the recording element substrate provided, there is no color mixing problem in which plural kinds of liquids are mixed, and further, there is no clogging of the discharge nozzle due to the sticking out of the adhesive, thereby providing high reliability and improved recording quality. It is an object to provide a recording head.

  In order to achieve the above object, an ink jet recording head of the present invention comprises a plurality of recording elements for discharging a recording liquid, and is provided on a surface opposite to the surface on which the recording elements are provided. A recording element substrate having one or a plurality of supply ports for supplying the recording liquid to the recording element substrate, a portion for incorporating the recording element substrate, and connecting the recording element substrate to the recording element In an ink jet recording head comprising: at least one recording element unit having a wiring substrate for applying an electric pulse for discharging the recording liquid to the substrate; and a support member for holding and fixing the recording element substrate. The support member is provided with one or a plurality of supply channels for supplying the recording liquid to the supply ports of the recording element substrate, respectively. Between the paths and both ends of each supply channel or between each of the supply ports and both ends of each of the supply ports has a convex shape, and the other is provided at a position where it is mated with the convex shape of the previous period. An ink jet recording head having a concave shape.

  Moreover, it is good also as a structure which has one or several concave shape in the both ends of the said concave shape.

  The recording element substrate and the support member may be bonded with an adhesive.

  As described above, according to the present invention, it has a convex shape between each supply flow path or between each supply port and at both ends of each supply port, so that a crack or the like generated in the adhesive is generated. The occurrence of peeling can be prevented, and when a recording element substrate having a plurality of supply ports is used, a color mixing problem in which a plurality of types of liquids are mixed can be prevented.

  Similarly, each of the supply flow paths and both ends of each supply flow path or between each supply port and both ends of each supply port have a convex shape, and the other has a concave shape. Further, it is possible to prevent the occurrence of peeling such as cracks generated in the adhesive, and when using a recording element substrate having a plurality of supply ports, it is possible to prevent a color mixing problem in which a plurality of types of liquids are mixed.

  As described above, the reliability of the ink jet recording head can be improved and the recording quality can be improved.

  Next, embodiments of the present invention will be described with reference to the drawings.

  In addition, the numerical value shown by each following embodiment is an example, and this invention is not limited to these. In addition, the present invention is not limited to each embodiment, and may be a combination of these, and may be applied to other techniques that are included in the concept of the present invention described in the claims of this specification. Can be applied.

(First embodiment)
6 to 11 are explanatory diagrams for explaining each of the preferred head cartridge, the recording head, and the ink tank and the relationship thereof in which the present invention is implemented or applied. Hereinafter, each component will be described with reference to these drawings.

  As can be seen from FIG. 6 and FIG. 7, the recording head H1001 of the present invention is one component constituting the recording head cartridge H1000. Ink tank H1900 (H1901, H1902, H1903, H1904). The recording head cartridge H1000 is fixedly supported by positioning means and electrical contacts of a carriage (not shown) mounted on the ink jet recording apparatus main body, and is detachable from the carriage. The ink tank H1901 is for black ink, the ink tank H1902 is for cyan ink, the ink tank H1903 is for magenta ink, and the ink tank H1904 is for yellow ink. As described above, each of the ink tanks H1901, H1902, H1903, and H1904 is detachable from the recording head H1001, and each ink tank can be replaced, so that the running cost of image recording by the ink jet recording apparatus is reduced. Reduced.

  Next, the recording head H1001 will be described in more detail in order for each component constituting the recording head.

<1> Recording Head The recording head H1001 is a bubble jet (registered trademark) side that performs recording using an electrothermal transducer that generates thermal energy for causing film boiling to the ink in response to an electrical signal. This is a recording head that is of a shooter type.

  As shown in the exploded perspective view of FIG. 8, the recording head H1001 includes a recording element unit H1002, an ink supply unit H1003, and a tank holder H2000.

  Further, as shown in the exploded perspective view of FIG. 9, the recording element unit H1002 includes a first recording element substrate H1100, a second recording element substrate H1101, a first plate H1200, an electrical wiring tape H1300, and an electrical contact substrate H2200. The ink supply unit H1003 is composed of an ink supply member H1500, a flow path forming member H1600, a joint rubber H2300, a filter H1700, and a seal rubber H1800.

<1-1> Recording Element Unit FIG. 10 is a perspective view showing the configuration of the first recording element substrate H1100 in a partially exploded state.

  The first recording element substrate H1100 is anisotropically etched using, for example, a Si substrate H1110 having a thickness of 0.5 to 1 mm and an ink supply port H1102 having a long groove-like through-hole as an ink channel using the crystal orientation of Si. The electrothermal conversion elements H1103, which are formed by a method such as sand blasting, are arranged in a zigzag pattern on each side of the ink supply port H1102, and the recording elements are arranged in a staggered pattern. An electric wiring such as Al for supplying power to H1103 is formed by a film forming technique. Furthermore, electrode portions H1104 for supplying electric power to the electric wiring are arranged on both outer sides of the electrothermal transducer H1103, and bumps H1105 such as Au are formed on the electrode portion H1104. On the Si substrate, an ink channel wall H1106 and an ejection port H1107 for forming an ink channel corresponding to the electrothermal conversion element H1103 are formed of a resin material by a photolithography technique, and an ejection port array H1108 is formed. Forming. Accordingly, since the ejection port is provided to face the electrothermal conversion element H1103, the ink supplied from the ink flow path H1102 is ejected by bubbles generated by the electrothermal conversion element H1103.

  FIG. 11 is a perspective view showing the second recording element substrate H1101 in a partially exploded state.

  The second recording element substrate H1101 is a recording element substrate for ejecting ink of three colors, and has three ink supply ports H1102 formed in parallel, and electric is provided on both sides of each ink supply port. A heat conversion element and an ink discharge port are formed. Of course, like the first recording element substrate H1100, an ink supply port, an electrothermal conversion element, an electric wiring, an electrode portion, and the like are formed on the Si substrate, and an ink flow path and an ink discharge are formed on the resin material by photolithography. An exit is formed.

  Similarly to the first recording element substrate, a bump H1105 such as Au is formed on the electrode portion H1104 for supplying electric power to the electric wiring.

Reference is now made to FIG. 9 again. The first plate H1200 is made of, for example, an alumina (Al ₂ O ₃ ) material having a thickness of 0.5 to 10 mm. The material of the first plate is not limited to alumina, but has a linear expansion coefficient equivalent to that of the material of the recording element substrate H1100 and is equivalent to the thermal conductivity of the material of the recording element substrate H1100. Alternatively, it may be made of a material having an equivalent or higher thermal conductivity. Examples of the material of the first plate H1200 include silicon (Si), aluminum nitride (AlN), zirconia, silicon nitride (Si ₃ N ₄ ), silicon carbide (SiC), molybdenum (Mo), and tungsten (W). Either may be sufficient. The first plate H1200 has ink supply ports H1201 for supplying black ink to the first recording element substrate H1100 and inks for supplying cyan, magenta, and yellow ink to the second recording element substrate H1101. A supply port H1201 is formed, the ink supply port 1102 of the recording element substrate corresponds to the ink supply port H1201 of the first plate H1200, and the first recording element substrate H1100 and the second recording element substrate H1101. Are bonded and fixed to the first plate H1200 with high positional accuracy. The first adhesive H1202 used for bonding is desirably a low viscosity, low curing temperature, cured in a short time, has a relatively high hardness after curing, and has ink resistance. The first adhesive H1202 is, for example, a thermosetting adhesive mainly composed of an epoxy resin, and the thickness of the adhesive layer is desirably 50 μm or less.

  The electrical wiring tape H1300 applies an electrical signal for ejecting ink to the first recording element substrate H1100 and the second recording element substrate H1101, and includes a plurality of recording element substrates. An electrical contact substrate having an opening portion, an electrode terminal H1302 corresponding to the electrode portion H1104 of each recording element substrate, and an external signal input terminal H1301 located at the end of the wiring tape for receiving an electrical signal from the main unit An electrode terminal portion H1303 for electrical connection with H2200 is provided, and the electrode terminal H1302 and the electrode terminal 1303 are connected by a continuous copper foil wiring pattern.

  The electrical wiring tape H1300, the first recording element substrate 1100, and the second recording element substrate H1101 are electrically connected to each other, and the connection method is, for example, the electrode portion 1104 of the recording element substrate and the electrical wiring tape H1300. The electrode terminal H1302 is electrically bonded by a thermal ultrasonic pressure bonding method.

The second plate H1400 is, for example, a single plate-like member having a thickness of 0.5 to 1 mm, and is formed of a ceramic material such as alumina (Al ₂ O ₃ ) or a metal material such as Al or SUS. Yes. The first recording element substrate H1100 and the second recording element substrate H1101 that are bonded and fixed to the first plate H1200 have openings that are larger than the outer dimensions thereof. Further, the first recording element substrate H1100 and the second recording element substrate H1101 and the electric wiring tape H1300 are bonded to the first plate H1200 with a second adhesive H1203 so as to be electrically connected in a plane. The back surface of the wiring tape H1300 is bonded and fixed with a third adhesive H1306.

  Electrical connection portions of the first recording element substrate H1100 and the second recording element substrate H1101 and the electric wiring tape H1300 are sealed with a first sealant H1307 (not shown) and a second sealant H1308, Protects electrical connections from ink corrosion and external impacts. The first sealing agent mainly seals the back surface side of the connection portion between the electrode terminal H1302 of the electric wiring tape and the electrode portion H1105 of the recording element substrate and the outer peripheral portion of the recording element substrate, and the second sealing agent. Seals the front side of the connecting part.

  Further, an electrical contact substrate H2200 having an external signal input terminal H1301 for receiving an electrical signal from the main unit is connected to the end of the electrical wiring tape by thermocompression bonding using an anisotropic conductive film or the like.

  The electric wiring tape H1300 is bent at one side surface of the first plate H1200, and is bonded to the side surface of the first plate H1200 with the third adhesive H1306. As the third adhesive H1306, for example, a thermosetting adhesive having a thickness of 10 to 100 μm mainly composed of an epoxy resin is used.

<1-2> Ink Supply Unit The ink supply member H1500 is formed by resin molding, for example. As the resin material, it is desirable to use a resin material mixed with 5 to 40% of glass filler in order to improve the shape rigidity.

  As shown in FIG. 12, the ink supply member H1500 is a component of the ink supply unit H1003 for guiding ink from the ink tank H1900 to the recording element unit H1002, and by ultrasonically welding the flow path forming member H1600. An ink flow path H1501 is formed. In addition, a filter H1700 for preventing entry of dust from the outside is joined to the joint H1517 engaged with the ink tank H1900 by welding. Further, in order to prevent ink from evaporating from the joint H1517 portion, A seal rubber H1800 is attached.

  The ink supply member H1500 also has a part of the function of holding the removable ink tank H1900, and has a first hole H1503 for engaging the second claw H1910 of the ink tank H1900.

  Further, as shown in FIG. 9, a mounting guide H1601 for guiding the recording head cartridge H1000 to the mounting position on the carriage of the ink jet recording apparatus main body, and an engaging portion for mounting and fixing the recording head cartridge to the carriage by a head set lever. H1508, an abutting portion H1509 in the X direction (carriage scanning direction) for positioning at a predetermined mounting position of the carriage, an abutting portion H1510 in the Y direction (recording medium conveyance direction), an abutting in the Z direction (ink ejection direction) A contact portion H1511 is provided. In addition, a terminal fixing portion H1512 for positioning and fixing the electrical contact substrate H2200 of the recording element unit H1002 is provided, and a plurality of ribs are provided around the terminal fixing portion H1512 to increase the rigidity of the surface having the terminal fixing portion H1512. ing.

<1-3> Coupling of recording head unit and ink supply unit As shown in FIG. 8, the recording head H1001 is completed by coupling the recording element unit H1002 to the ink supply unit H1003 and further to the tank holder H2000. The coupling is performed as follows.

  The ink supply port of the recording element unit H1002 (ink supply port H1201 of the first plate H1200) and the ink supply port of the ink supply unit H1003 (ink supply port H1601 of the flow path forming member H1600) are communicated so that ink does not leak. Therefore, each member is fixed with the screw H2400 so as to be pressure-bonded via the joint rubber H2300. At the same time, the recording element unit H1002 is accurately positioned and fixed with respect to the reference positions in the X, Y, and Z directions of the ink supply unit.

  The electrical contact substrate H1301 of the recording element unit H1002 is positioned and fixed to one side surface of the ink supply member H1500 by terminal positioning pins H1515 (2 places) and terminal positioning holes H1309 (2 places). The fixing method is, for example, fixing by crimping the terminal coupling pin H1515 provided on the ink supply member H1500, but may be fixed using other fixing means. The completed drawing is shown in FIG.

  Further, the recording head H1001 is completed by fitting the coupling hole and coupling portion of the ink supply member H1500 with the tank holder into the tank holder H2000 and coupling them. The completed drawing is shown in FIG.

<2> Printhead Cartridge FIGS. 6 and 7 are diagrams for explaining mounting of the printhead H1001 and the ink tanks H1901, H1902, H1903, and H1904 constituting the printhead cartridge H1000, and the ink tanks H1901, H1902, H1903, Corresponding color ink is stored inside the H1904. Further, as shown in FIG. 12, each ink tank is formed with an ink supply port H1907 for supplying ink in the ink tank to the recording head H1001. For example, when the ink tank 1901H is attached to the recording head H1001, the ink supply port H1907 of the ink tank H1901 is brought into pressure contact with the filter H1700 provided in the joint portion H1520 of the recording head H1001, and the black ink in the ink tank H1901 is supplied with ink. The ink is supplied from the port H1907 to the first recording element substrate through the first plate H1200 through the ink flow path H1501 of the recording head H1001.

  Then, ink is supplied to the foaming chamber having the electrothermal conversion element H1103 and the discharge port H1107, and is ejected toward a recording sheet as a recording medium by the thermal energy given to the electrothermal conversion element H1103.

  FIG. 3 is a perspective view showing a state before the recording element 1 included in the ink jet recording head according to the first embodiment of the present invention is joined to the support member 2. FIG. 1 is a cross-sectional view of a state in which the recording element substrate 1 is bonded to the support member 2 with an adhesive 3.

The recording element substrate 1 has a function in which electrothermal conversion elements are arranged and discharges a recording liquid, and is disposed on the support member 2. The recording element substrate 1 is bonded onto the support member 2 with an adhesive resin or the like. The support member 2 is made of ceramic such as alumina (Al ₂ O ₃ / linear expansion coefficient = 6.8 × 10 ⁻⁶ [K ⁻¹ ]), and the recording element substrate 1 is made of silicon (Si / linear expansion coefficient = 3.04 × 10 ^−6). [K ^-1 ]).

  A supply channel 5 for supplying ink to the supply port 4 is provided on the joint surface of the support member 2 with the recording element substrate 1, and convex shapes 6 are provided between the supply channels and at both ends of the supply channel. have. Further, the supply port and both ends of the supply port have a concave shape 7 provided at a position where the convex shape 6 is fitted.

  Therefore, due to the fitting of the convex shape and the concave shape, the stress generated due to the difference in linear expansion between the support member 2 and the recording element substrate 1 due to the thermal history in the manufacturing process after the joining process, and the curing shrinkage of the adhesive itself It is possible to relieve each of the stresses generated in the adhesive layer, thereby preventing peeling such as cracks occurring in the adhesive.

  In addition, although the present Example demonstrated the example which has the convex shape 6 between supply flow paths, and the both ends of a supply flow path, and has the concave shape 7 in the both ends of a supply port and a supply port, it is limited to this. Instead, it may have a convex shape between the supply ports and at both ends of the supply port, and may have a concave shape between the supply channels and at both ends of the supply channel.

(Second Embodiment)
FIG. 4 is a perspective view showing a state before the recording element 1 included in the ink jet recording head according to the second embodiment of the present invention is joined to the support member 2. FIG. 5 is a cross-sectional view of a state in which the recording element substrate 1 is bonded to the support member 2 with an adhesive 3.

The recording element substrate 1 has a function in which electrothermal conversion elements are arranged and discharges a recording liquid, and is disposed on the support member 2. The recording element substrate 1 is bonded onto the support member 2 with an adhesive resin or the like. The support member 2 is made of ceramic such as alumina (Al ₂ O ₃ / linear expansion coefficient = 6.8 × 10 ⁻⁶ [K ⁻¹ ]), and the recording element substrate 1 is made of silicon (Si / linear expansion coefficient = 3.04 × 10 ^−6). [K ^-1 ]).

  A supply channel 5 for supplying ink to the supply port 4 is provided on the joint surface of the support member 2 with the recording element substrate 1, and convex shapes 6 are provided between the supply channels and at both ends of the supply channel. have. Further, the supply port and both ends of the supply port have a concave shape 7 provided at a position where the convex shape 6 is fitted. Furthermore, it has the concave shape 8 for adhesive absorption at both ends of the concave shape.

  Therefore, due to the fitting of the convex shape and the concave shape, the stress generated due to the difference in linear expansion between the support member 2 and the recording element substrate 1 due to the thermal history in the manufacturing process after the joining process, and the curing shrinkage of the adhesive itself It is possible to relieve each of the stresses generated in the adhesive layer, thereby preventing peeling such as cracks occurring in the adhesive. Furthermore, even if the application amount increases due to variations in the application amount of the adhesive, the adhesive overflowing the concave shape 8 for absorbing the adhesive is absorbed, causing the protrusion to the supply flow path or supply port and the clogging of the discharge nozzle. Can be prevented.

  In this embodiment, convex shapes 6 are provided between the supply flow paths and at both ends of the supply flow paths, the concave shapes 7 are provided at both ends of the supply port and the supply ports, and the concave shapes 8 for absorbing the adhesive are provided at both ends thereof. However, the present invention is not limited to this, and has convex shapes between the supply ports and both ends of the supply ports, and has concave shapes between the supply channels and both ends of the supply channels. It may have a concave shape for absorbing adhesive.

It is sectional drawing for demonstrating one Embodiment of the inkjet recording head of this invention. It is sectional drawing for demonstrating one Embodiment of the conventional inkjet recording head. It is a perspective view for explaining one embodiment of the ink jet recording head of the present invention. It is a perspective view for explaining one embodiment of the ink jet recording head of the present invention. It is sectional drawing for demonstrating one Embodiment of the inkjet recording head of this invention. FIG. 2 is a perspective view showing a state in which a recording head and an ink tank are combined in an embodiment of the recording head cartridge of the present invention. FIG. 2 is a diagram illustrating an embodiment of a recording head cartridge according to the present invention in a state where a recording head and an ink tank are separated. FIG. 7 is an exploded perspective view of the recording head cartridge shown in FIG. 6 and the like. FIG. 9 is an exploded perspective view of the ink supply unit and the recording element unit shown in FIG. 8. FIG. 10 is a perspective view in which a part of the first recording element substrate shown in FIG. 9 is broken. FIG. 10 is a perspective view in which a part of the second recording element substrate shown in FIG. 9 is cut away. FIG. 7 is a cross-sectional view of the recording head cartridge shown in FIG. 6 and the like. FIG. 7 is a perspective view showing a combined body of a recording element unit and an ink supply unit in the recording head cartridge shown in FIG. 6 and the like. FIG. 7 is a perspective view illustrating a bottom surface of the recording head cartridge illustrated in FIG. 6 and the like.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recording element board | substrate 2 Support member 3 Adhesive 4 Supply port 5 Supply flow path 6 Convex shape 7 Concave shape 8 Adhesive absorption concave shape H1000 Recording head cartridge H1001 Recording head H1002 Recording element unit H1003 Ink supply unit H1100 First recording Element substrate H1101 Second recording element substrate H1102 Ink supply port H1103 Electrothermal conversion element H1104 Electrode H1105 Bump H1106 Ink channel wall H1107 Discharge port H1108 Discharge port array H1110 Si substrate H1200 First plate H1201 Ink supply port H1300 Electrical wiring tape H1301 External signal input terminal H1302 Electrode terminal H1303 Electrode terminal portion H1307 First sealant H1308 Second sealant H1309 Terminal positioning hole H1310 Terminal coupling hole H1 400 Second plate H1500 Ink supply member H1501 Ink flow path H1502 Tank positioning hole H1503 First hole H1504 Second hole H1509 X abutting part H1510 Y abutting part H1511 Z abutting part H1512 Terminal fixing part H1515 Terminal positioning pin H1516 Terminal coupling pin H1520 Joint part H1600 Flow path forming member H1601 Mounting guide H1602 Ink supply port H1700 Filter H1800 Seal rubber H1900 Ink tank H1901 Black ink tank H1902 Cyan ink tank H1903 Magenta ink tank H1904 Yellow ink tank H1907 Ink supply port H1908 Tank positioning pin H1909 1st claw H1910 2nd claw H1911 3rd claw H1912 Movable lever H2000 Tank holder H2300 Joint rubber H2400 Screw

Claims (3)

A plurality of recording elements for discharging the recording liquid, provided on a surface opposite to the surface on which the recording elements are provided, and one or a plurality of supply ports for supplying the recording liquid to the recording elements A recording element substrate comprising the recording element substrate; and a portion for incorporating the recording element substrate; and by being connected to the recording element substrate, an electric pulse for discharging the recording liquid to the recording element substrate is provided. At least one recording element unit having a wiring board to be applied;
An ink jet recording head having a support member for holding and fixing the recording element substrate;
The support member is provided with one or a plurality of supply channels for supplying the recording liquid to the supply ports of the recording element substrate, respectively, and between the supply channels and the supply channels. Or both ends of each supply port and both ends of each supply port have a convex shape, and the other has a concave shape provided at a position to be mated with the previous convex shape. An inkjet recording head.   The inkjet recording head according to claim 1, wherein one or a plurality of concave shapes are provided at both ends of the concave shape.   The ink jet recording head according to claim 1, wherein the recording element substrate and the support member are bonded with an adhesive.

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