JPH05138887A - Liquid jet recording head, and its manufacture and recorder - Google Patents

Abstract

PURPOSE:To enable reliability, performance, and productivity of a recording head to be improved by a method wherein a first substrate is stuck fast to a second substrate with resin to give mechanical energizing force, And a recording liquid feed opening and a discharge opening are processed. CONSTITUTION:A heater board 100 (a first substrate) and a roof 400 (a second substrate) are positioned by abutting an end surface of the board 100 against an orifice plate 404. However, when they are temporarily fixed, an adhesive 405 is applied along three sides of an outer peripheral part of the roof 400. A photosetting type adhesive is used as the adhesive 405. After positioning, they are irradiated with ultraviolet rays to fix both by curing. In order to fix them thoroughly after ending temporarily fixing, resin 500 of which a melting point is lower than polysulfone and others as the material of the roof 400 is poured into a mold 1500 to be molded around them. Since manhours for manufacture is reduced, alignment in the assemblage of a recording head body can be performed accurately, and dispersion in dimensions of a passage or the like and blockade are not generated by pouring the adhesive, its reliability is high and its yield is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid jet recording head, and more particularly to a liquid jet recording head used in a liquid jet recording apparatus in which recording is performed by droplets discharged from a discharge port. The present invention also relates to a method for manufacturing the recording head and a recording apparatus using the recording head.

[0002]

2. Description of the Related Art Conventionally, as a liquid jet recording apparatus of this kind, a first substrate on which an ejection energy generating element is formed and a second substrate which is joined to the first substrate are used. A second structure which has a groove for forming a flow path of the recording liquid corresponding to the disposition portion, and integrally has a discharge port forming member in which a discharge port of the recording liquid is formed in front of the groove. It has a substrate and a biasing member that applies a mechanical biasing force to the first and second substrates to bring them into close contact with each other.

FIG. 11 shows an example of a conventional liquid jet recording head of this type. In the figure, reference numeral 100 denotes a first substrate made of Si or the like, and an electrothermal converter as a discharge energy generating element and a group of wiring portions thereof are provided on the upper surface thereof. A second substrate 400 made of resin or the like has a desired number of ink ejection ports (orifices) 421 and 422 formed in the orifice plate portion 404 (five in the figure for simplification), and an ink introduction port. 420 and a common liquid chamber forming recess 430 are integrally provided. Then, the first substrate 100 is arranged on the support 300, and the claw 1601 provided on the pressing spring 1600 and the hole 307 provided on the support are pressed from the back side of the second substrate 400 to the pressing spring 160.
A pressing force of 0 is applied to engage. At this time, the ink introduction port 420 is arranged in the hole 1602 of the pressing spring 1600. Further, the first substrate 100 and the second substrate 400
The joint surface was sealed with a sealant material containing silicon, urethane, or the like as a main component, along the side of the outer peripheral portion other than the side where the orifice is located.

[0004]

However, in the liquid jet recording head (hereinafter, also referred to as an ink jet recording head or simply a recording head) having such a structure,
The following problems have occurred.

First, ink is supplied from the ink introduction port 420 to the common liquid chamber forming recess 430. As shown in FIG. 11, the holding spring 1600 and the support 300 form the first substrate 100 and the second substrate. In a structure in which 400 is sandwiched, it is necessary to obtain a sufficient fixing force or a close contact force between both substrates. Therefore, there is a limit to the enlargement of the hole portion 1602 of the presser spring in terms of rigidity of the presser spring. It was Therefore, when increasing the number of orifices or increasing the refill frequency in the head, there is a limitation on increasing the diameter of the ink introduction port 420 so that the ink supply amount can be increased.

Further, the claw 160 provided on the presser spring 1600
When 1 is inserted into the hole 307 provided in the support body, the pressing spring 1600 is once spread outward by the folded tip of the claw 1601 and then returned to the inside by the spring force, such as Si. The first substrate 100 made of may be chipped. Further, when the head is subjected to excessive impact or vibration, the pressing spring 1600 may be disengaged from the support 300.

On the other hand, a sealant containing silicon, urethane, or the like as a main component, which seals a portion of the outer peripheral portions of the bonding surfaces of the first substrate 100 and the second substrate 400 along the sides other than the side where the orifice is located. The material is the support 300
In order to prevent leakage from the hole portion 307, it takes a great deal of labor at the production site to adjust the viscosity of the sealant material.

[0008]

Means for Solving the Problems As a result of diligent studies, the present inventor has established a flow path for a recording liquid in correspondence with a first substrate on which an ejection energy generating element is formed and a mounting portion of the first substrate at the time of bonding. A second substrate having a groove for forming the liquid, and a liquid obtained by processing the recording liquid supply port and the ejection port by bringing the first and second substrates into close contact with resin to give a mechanical biasing force. The jet recording head solves the above-mentioned problems.

According to the present invention, since the first and second substrates are adhered to each other by the resin, the pressing spring and the sealant are unnecessary. As a result, the pressing spring is prevented from being loosened from the first and second boards, and when the pressing spring is assembled to the support body that supports the first and second boards, the first board is chipped or the pressing spring claws are The sealant does not leak from the hole of the support to be inserted.

Further, it is possible to increase the supply port of the recording liquid, and it is possible to increase the ejection frequency.

Further, it becomes easy to take a large number of pieces and the productivity is remarkably improved.

That is, according to the present invention, it is possible to remarkably improve the reliability, performance and productivity of the recording head.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an ink jet recording head according to an embodiment of the present invention, which is of a disposable type in which an ink containing portion as an ink supply source is integrated. In FIG. 11, reference numeral 100 denotes a heater board in which an electrothermal converter (discharge heater) and a wiring such as Al for supplying electric power by the electrothermal converter are formed on a Si substrate by a film forming technique. It corresponds to the substrate 100.
This detailed configuration will be described in detail in FIG. 20
Reference numeral 0 is a wiring board for the heater board 100, and the corresponding wiring is connected by TAB, for example.

Reference numeral 400 denotes a top plate provided with a partition wall and a common liquid chamber for limiting the ink flow path.
Although it corresponds to the substrate 400, in this example, it is made of a resin material integrally having an orifice plate portion. This top 40
The detailed configuration of 0 will be described in detail with reference to FIGS.

Numeral 300 is a metal support, and numeral 100 is a heater board.
A wiring board made of polyimide is connected, and the top plate 400 is positioned and temporarily fixed. After that, the heater board 100 and the top plate 400 are pressure-bonded to each other by molding around the heater board 100 and the top plate 400 with a resin such as polysulfone, polyether sulfone, polyphenylene oxide, and polypropylene. At this time, it is possible to take a large number of resin pieces because the resin dimension does not require strict accuracy.

It should be noted that the support 300 may be provided with the wiring substrate 200 also by sticking or the like, and may have a mounting reference to a carriage for scanning the head. The support 300 also functions as a member that dissipates and cools the heat of the heater board 100 generated by driving.

Reference numeral 600 denotes a supply tank, which functions as a sub-tank which receives ink from an ink reservoir serving as an ink supply source and guides the ink to a common liquid chamber formed by joining the heater board 100 and the top plate 400. 700
Is a filter arranged at a portion in the supply tank 600 near the ink supply port to the common liquid chamber, and 800 is the supply tank 60.
It is a cover member of 0.

Reference numeral 900 denotes an absorber for impregnating ink, which is arranged in the cartridge body 1000. 1
Reference numeral 200 denotes a supply port for supplying ink to the unit including the above-described units 100 to 800. By injecting the ink from the supply port 1200 in the process before the unit is arranged in the portion 1010 of the cartridge body 1000, Ink impregnation of the absorber 900 can be performed.

Reference numeral 1100 denotes a lid member for the cartridge body, 1
Reference numeral 400 is an atmosphere communication port provided in the lid member for communicating the inside of the cartridge with the atmosphere. 1300 is an atmosphere communication port 1
It is a liquid repellent material disposed inside 400, which prevents ink from leaking from the atmosphere communication port 1400.

When the ink filling through the supply port 1200 is completed, a unit consisting of the parts 100 to 800 is positioned and arranged in the part 1010. The positioning or fixing at this time can be performed, for example, by fitting the protrusion 1012 provided in the cartridge main body 1000 and the hole 312 provided in the support body 300 corresponding thereto, as shown in FIG. The cartridge is completed.

The ink is supplied from the inside of the cartridge into the supply tank 600 through the supply port 1200, the hole 320 provided in the support 300 and the introduction port provided on the back surface side of the supply tank 600 in FIG. After passing through
From the outlet, it flows into the common liquid chamber through an appropriate supply pipe and the ink inlet 420 of the top plate 400. A packing made of, for example, silicon rubber or butyl rubber is provided in the connection portion for ink communication in the above, and sealing is performed by this to secure an ink supply path.

FIGS. 3A and 3B are a plan view and a partially enlarged view of the heater board 100 according to this embodiment.

In FIG. 1A, 101 is a heater board substrate according to this embodiment, and 103 is a discharge heater section. 1
Reference numeral 04 denotes a terminal, which is connected to the outside by wire bonding. Reference numeral 102 denotes a temperature sensor, which is formed on the heater board substrate by the same film forming process as the discharge heater unit 103 and the like. FIG. 2B is an enlarged view of a portion B including the sensor 102 in FIG. 1A, and reference numerals 105 and 106 denote a discharge heater and wiring, respectively.
Further, reference numeral 108 is a heat retaining heater for heating the head.

Since the sensor 102 is formed by a film forming process similar to that of a semiconductor, like the other parts, the sensor 102 has extremely high precision, and the constituent materials of the other parts are aluminum, titanium, tantalum, tantalum pentoxide, and the like. It can be made of a material whose conductivity changes with temperature, such as niobium. For example, among these, titanium is a material that can be arranged between the heating resistance layer and the electrode constituting the electrothermal conversion element in order to enhance the adhesiveness between them, and tantalum is the cavitation resistance of the protective layer on the heating resistance layer. A material that can be placed on top of it to enhance it. In addition, the line width is increased to reduce the process variation, and the meandering shape is used to increase the resistance in order to reduce the influence of wiring resistance and the like.

Similarly, the heat retention heater 108 is made of the same material (for example, HfB) as the heating resistance layer of the discharge heater 105.
_Although it can be formed by using ₂ ), it may be formed by using other material forming the heater board, for example, aluminum, tantalum, titanium or the like.

4 and 5 show two examples of the configuration of the top plate 400 according to this example.

The top plate 400 according to the present embodiment has the ink flow path groove 4
11 and 412 are provided and integrated with the orifice plate 404.

Then, in the configuration example shown in FIG.
The top plate 400 is made of resin such as polysulfone, polyether sulfone, polyphenylene oxide, and polypropylene, which has excellent ink resistance, and the orifice plate portion 4
It is simultaneously molded together with 04 in the mold. On the other hand, in the configuration example shown in FIG.
04 is made of the same resin material as that of the main body of the top plate 400, is made of a different resin material, or is made of a metal material film.
It is manufactured separately from the main body of No. 00 and is inserted into the mold for insert molding.

Next, a method of forming the ink flow channel grooves 411, 412 and the orifices 421, 422 will be described.

Regarding the ink channel grooves, a resin is molded by a mold in which fine grooves having a pattern opposite to that of the ink channel grooves are formed by a technique such as cutting.
12 can be formed.

Molding is performed in the mold without the orifices 421 and 422 and the ink introduction port 420 shown in FIG.

FIG. 7 shows the heater board 100 and the top plate 40.
An embodiment of joining or fixing 0 and 0 will be shown.

Positioning of the heater board 100 and the top plate 400 is carried out by abutting the end surface of the heater board 100 against the orifice plate portion 404, and when temporarily fixing these, bonding is performed along the three sides of the outer peripheral portion of the top plate 400. Material 40
5 was applied.

Further, the adhesive can be present on the joint surface between the heater board 100 and the orifice plate portion 404 in an appropriate amount in a necessary and sufficient amount.

In this example, as the adhesive 405, a photocurable adhesive UV-201 (Grace Japan Co., Ltd.) is used.
After the positioning is performed using
Both were fixed by irradiating with ultraviolet rays of J / cm ² and curing.
Here, since the portion where the adhesive agent 405 exists is separated from the flow path or the discharge port, the allowable value of the number of trials for positioning increases.

When the temporary fixing is finished, the heater board 100
In order to completely fix the top plate 400 and the top plate 400, a resin 5 having a lower melting point than the materials of the top plate 400, such as polysulfone, polyether sulfone, polyphenylene oxide, polypropylene, etc.
00 is poured from a nozzle 1510 into a mold 1500 into which a heater board 100 and a top plate 400 as shown in FIG.
Mold around 00.

After this, the orifice 42 is irradiated with ultraviolet rays by, for example, a laser device to remove and evaporate the resin.
1, 422 and the ink introduction port 420 are formed.

At this time, if an excimer laser is appropriately used, precise processing along the mask pattern can be easily performed.

In the embodiment, the ink flow channel groove width is 30 to 50 μm and the non-groove portion width is 20 to 4 in addition to the constitution of FIG. 4 or FIG.
A top plate 400 having a diameter of 0 μm and an orifice hole diameter of 20 to 40 μm was obtained.

Next, the recording head main body obtained by integrating the top plate 400 and the heater board 100 in this manner is fixed on the support 300 using the adhesive 306. As the adhesive 306, for example, HP2R / 2H manufactured by Canon Chemical Co., Ltd. can be used.

The respective parts having the above-described structure can be assembled by the steps described above with reference to FIG. 1 to obtain a cartridge as shown in FIG. 2. Further, by using this, an ink jet printer as shown in FIG. 10, that is, a disposable printer. It is possible to configure an inkjet printer that uses the cartridge.

In FIG. 10, 14 is the cartridge shown in FIG. 1 and FIG.
Are fixed on the carriage 15 by a pressing member 41, and these can be reciprocated in the longitudinal direction along the shaft 21. Positioning with respect to the carriage 15 can be performed by, for example, a hole provided in the support 300 and a dowel provided on the carriage 15 side. Further, the electrical connection may be achieved by coupling the connector on the carriage 15 to the connection pad provided on the wiring board 200.

The ink ejected from the recording head reaches the recording medium 18 whose recording surface is regulated by the platen 19 at a slight distance from the recording head and forms an image on the recording medium 18.

An ejection signal corresponding to image data is supplied to the recording head from an appropriate data supply source via the cable 16 and a terminal connected to the cable 16. Cartridge 14
May be provided in one or more (two in the figure) depending on the ink color used.

In FIG. 10, 17 is a carriage motor for scanning the carriage 15 along the shaft 21, and 22 is a driving force of the motor 17 for the carriage 15.
Is a wire that transmits to. A feed motor 20 is connected to the platen roller 19 to convey the recording medium 18.

In the ink jet printer using such a disposable cartridge 14, the absorber 9
The cartridge 14 is converted when the ink impregnated in 00 is used up.
Is desirable to be inexpensive. As described above, the cartridge 14 described in the above embodiment can be inexpensively constructed because the manufacturing process is simple and the number of man-hours is small. Therefore, the cartridge 14 is also extremely suitable for disposing. Further, since the alignment can be accurately performed when assembling the recording head main body, and the flow of the adhesive does not cause dimensional variation or blockage of the flow path, the reliability is very high and the yield is high. Will improve.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various configurations can be adopted.

For example, in the above example, the recording head main body and the ink supply source and the like are integrated and made disposable, but they may be separate bodies, and it is not always necessary to make them disposable. That is, even if the recording head main body is of a fixed type and is not premised on easy replacement, the simple and inexpensive construction of the recording head main body also contributes to the cost reduction of the printer main body.

Further, in the recording head main body including the heater board 100 and the top plate 400, in the above example, the ink flow path and the common liquid chamber forming recess are provided only on the top plate side. Good. Further, regarding the recording head main body, in the above example, the discharge heater 105 is used in order to change the thermal energy into the discharge energy. However, an electro-mechanical conversion element that deforms in response to energization is used to discharge the mechanical vibration. It may be in the form of energy.

Further, in the above example, the orifice plate portion 4
Although 04 has a structure in which the heater board has an abutting portion, the abutting portion may have any shape. For example, such an abutting portion may be provided in the side surface direction so that the positioning in the lateral direction may be performed, or, instead of providing such an abutting portion, the positioning is performed by the combination of the dowel and the hole. It may be done. Further, if the positioning is not a problem, the abutting portion or the positioning member is unnecessary. That is, the top plate may have a wall portion that is flush with the joint surface in front of the groove, and the discharge port may be formed there.

FIG. 9 shows a form in which a large number of pieces are taken. The gate 501 of the resin 500 for connecting the individual works at the time of molding is cut and divided. After the division, as described above, the orifice and the ink inlet are formed by a method such as excimer laser. The present invention is particularly applicable to a recording head and a recording device of a method of ejecting ink by utilizing thermal energy among inkjet recording methods,
It has an excellent effect.

With regard to its typical structure and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4,740,796. This method is applicable to both so-called on-demand type and continuous type, but in particular,
In the case of the on-demand type, the electrothermal converter arranged corresponding to the sheet or liquid path holding the liquid (ink) corresponds to the recorded information and the temperature rises rapidly beyond the nucleate boiling. By applying at least one drive signal that gives a heat energy to the electrothermal converter, the film is boiled on the heat-acting surface of the recording head, and as a result, a liquid (ink It is effective because it can form air bubbles inside. Liquid (ink) is ejected through the ejection openings by the growth and contraction of the bubbles to form at least one droplet. It is more preferable to make this drive signal into a pulse shape, because the bubble growth and contraction are immediately and appropriately performed, so that the ejection of the liquid (ink) with excellent responsiveness can be achieved. As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. In addition,
US Pat. No. 4, of the invention relating to the rate of temperature rise of the heat acting surface,
If the conditions described in the specification of 313,124 are adopted,
Further excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the discharge port, the liquid passage, and the electrothermal converter (the straight liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned specifications, U.S. Pat.No. 4,558,333, U.S. Pat.
A configuration using the specification of No. 9,600 is also included in the present invention. In addition, for a plurality of electrothermal converters, JP-A-59-123670, which discloses a configuration in which a common slit is used as a discharge portion of the electrothermal converter, and an opening for absorbing a pressure wave of thermal energy are discharged. Japanese Patent Laid-Open No. Sho 59-59
The present invention is also effective as a configuration based on Japanese Patent Publication No. 138461.

Further, as a full line type recording head having a length corresponding to the width of the maximum recording medium which can be recorded by the recording device, a combination of a plurality of recording heads as disclosed in the above-mentioned specification is used. It may be configured to satisfy the length or configured as one recording head integrally formed.

In addition, by being attached to the apparatus main body, it can be electrically connected to the apparatus main body and can be supplied with ink from the apparatus main body by a replaceable chip type recording head or the recording head itself. The present invention is also effective when a cartridge-type recording head that is specially provided is used.

Further, it is preferable to add recovery means for the recording head, preliminary auxiliary means, etc., which are provided as a constitution of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. .. Specific examples thereof include capping means, cleaning means, pressurizing or sucking means, an electrothermal converter or a heating element other than this, or a preheating means for the recording head, and recording for the recording head. It is also effective to perform a preliminary ejection mode in which another ejection is performed for stable recording.

Further, the recording mode of the recording apparatus is not limited to the recording mode only for the mainstream color such as black, but the recording head may be integrally formed or a plurality of combinations may be used. The present invention is also extremely effective for a device provided with at least one of full color by color mixing.

In the above description, the ink is described as a liquid, but it is an ink that solidifies at room temperature or lower, and is softened or liquid at room temperature, or the ink itself is 30 ° C. or higher and 70 ° C. in the above-mentioned inkjet. In general, the temperature is adjusted within the following range to control the temperature of the ink so that the viscosity of the ink is within the stable ejection range. Therefore, the ink may be in a liquid state when the use recording signal is applied. In addition, it is possible to prevent the temperature rise due to thermal energy from being positively used as the energy for changing the state of the ink from the solid state to the liquid state, or to use the ink that solidifies when left standing for the purpose of preventing ink evaporation. In any case, due to the heat energy, such as ink that is liquefied by the application of heat energy according to the recording signal and ejected as an ink liquid, or that has already started to solidify when it reaches the recording medium. The use of an ink having a property of liquefying for the first time is also applicable to the present invention. In such a case, the ink is, as described in JP-A-54-56847 or JP-A-60-71260, in a state of being held as a liquid or a solid in the concave portion or the through hole of the porous sheet, It may be configured to face the electrothermal converter. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

[0060]

According to the present invention, since the pressing spring is eliminated, the pressing spring is not improperly attached to the support. The first substrate is not chipped when the presser spring is assembled. (Reduction of defective rate) It is possible to increase the supply port of the recording liquid and increase the ejection frequency. In addition, the function of the resin for adhering the first and second substrates eliminates the need for a sealant, reduces the defect of the sealant, reduces the defective rate, and simplifies the process, thereby significantly improving the productivity. Further, it becomes easy to take a large number of pieces, and the productivity is remarkably improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration example of a cartridge including a recording head according to an embodiment of the invention.

FIG. 2 is an external perspective view of a cartridge that combines the configurations of FIG.

3A and 3B are a plan view and a partially enlarged view showing an example of a heater board applicable to the recording head according to the present embodiment, respectively.

FIG. 4 is a perspective view showing an example of the configuration of a top plate joined to the heater board shown in FIG. 2 in the present embodiment.

FIG. 5 is a perspective view showing an example of the configuration of a top plate joined to the heater board shown in FIG. 2 in the present embodiment.

6 is an external perspective view of a recording head main body formed by joining the respective parts illustrated in FIGS. 2 and 3. FIG.

FIG. 7 is an explanatory diagram for explaining a mode of joining or molding of the recording head main body.

FIG. 8 is an explanatory diagram for explaining a mode of joining or molding of the recording head main body.

FIG. 9 is an explanatory diagram for explaining a mode in which a large number of recording head main bodies are taken.

10 is a perspective view showing an example of an inkjet printer configured by using the cartridge shown in FIG.

FIG. 11 is an explanatory diagram for explaining assembly of a conventional recording head.

[Explanation of symbols]

 100 Heater Board 105 Ejection Heater 200 Wiring Board 300 Support 400 Top Plate 404 Orifice Plate 405 Adhesive 411, 412 Ink Flow Path Forming Groove 420 Ink Inlet 421, 422 Orifice 430 Common Liquid Chamber Forming Recess 500 Resin 600 Supply tank 700 Filter 800 Lid member 900 Ink absorber 1000 Cartridge body 1100 Lid member 1200 Ink supply port 1300 Liquid repellent material 1400 Atmosphere communication port 1500 type

Claims (11)

[Claims] 1. A first substrate on which an ejection energy generating element is formed, and a second substrate having a groove for forming a flow path of a recording liquid corresponding to an arrangement portion of the first substrate at the time of bonding. A liquid jet recording head, characterized in that the first and second substrates are brought into close contact with a resin to give a mechanical biasing force to process the recording liquid supply port and the ejection port. 2. The liquid jet recording head according to claim 1, wherein the ejection port forming member has a form of a plate-like member for abutting and positioning the first substrate during the joining. 3. The liquid jet recording head according to claim 1, wherein the discharge forming member is integrally molded together with the second substrate with the same resin material. 4. The discharge port forming member is formed by molding the second substrate with a resin material and then insert-molding the second substrate.
The liquid jet recording head according to claim 1, wherein the liquid jet recording head is integrated with a substrate. 5. The bonding surface of the first and second substrates is
The liquid jet recording head according to claim 1, wherein the adhesive is present only on a portion of the outer peripheral portion along a side other than the side where the ejection port is located. 6. A first substrate on which an ejection energy generating element is formed, and a second substrate having a groove for forming a flow path of a recording liquid corresponding to an arrangement portion of the first substrate at the time of bonding. A method for manufacturing a liquid jet recording head, characterized in that the first and second substrates are brought into close contact with a resin and a mechanical biasing force is applied to process the recording liquid supply port and the ejection port. 7. The liquid jet recording head according to claim 6, wherein the ejection port forming member has a form of a plate-like member for abutting and positioning the first substrate during the joining. Production method. 8. The method of manufacturing a liquid jet recording head according to claim 6, wherein the ejection forming member is integrally molded together with the second substrate with the same resin material. 9. The discharge port forming member is formed by molding the second substrate with a resin material and then insert-molding the second substrate.
The method for manufacturing a liquid jet recording head according to claim 6 or 7, wherein the method is integrated with a substrate. 10. The bonding surface of the first and second substrates is characterized in that an adhesive is present only on a portion of the outer peripheral portion along a side other than the side where the discharge port is located. A method of manufacturing a liquid jet recording head according to claim 6. 11. A liquid jet recording head according to claim 1, wherein an ink ejection port for ejecting ink is provided facing a recording surface of a recording medium, and at least a member for mounting the recording head. A recording device comprising.