JP2001171129A - Manufacturing method for ink-jet recording head and the ink-jet recording head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an adhesive from flowing into an ink channel. SOLUTION: The manufacturing method for the ink-jet head includes a process 601 of overlapping and bonding an extraction plate, an inlet plate, a channel plate and a diaphragm at least onto one face of a base plate and forming a plurality of ink channels, a process of forming to the nozzle plate a plurality of nozzles for discharging ink from each of the plurality of ink channels, a process 602 of forming a retreat part to retreat the adhesive for bonding the base plate, the extraction plate, the inlet plate, the channel plate and the diaphragm to the nozzle plate, and processes 603 and 604 of pressing the base plate to the nozzle plate to bond the nozzle plate so that each bond face of the base plate, the extraction plate, the inlet plate, the channel plate and the diaphragm intersects a face of the nozzle plate where the plurality of nozzles are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an ink jet recording head and an ink jet recording head, and more particularly to a method for manufacturing an ink jet recording head in which an adhesive is prevented from entering an ink flow path and a method for manufacturing the same. The present invention relates to an inkjet recording head.

[0002]

2. Description of the Related Art Conventionally, there has been a demand for an increase in printing speed in an ink jet recording system. For this reason,
2. Description of the Related Art It is common to use a so-called multi-nozzle head having a plurality of nozzles and a certain printing width in an ink jet recording head (hereinafter, may be simply abbreviated as “head”).

However, in order to realize a higher printing speed, it is desired to use a head having more nozzles and a wider printing width. For this reason, the head tends to be longer and longer.

In general, a head is formed by bonding a plurality of plates on a surface of a base plate which is the center of the head. The base plate and the plurality of plates are bonded to each other with an adhesive, and an ink flow path such as an ink channel as a space for pressurizing the ink is formed between the base plate and the plurality of plates.

A thermosetting resin is used for bonding the base plate and the nozzle plate, and is bonded by pressing and heating. As for this adhesive, a pattern in which the adhesive is removed from a portion corresponding to the ink flow path is formed before bonding.

[0006]

The plurality of plates that are bonded on the surface of the base plate are different in material and manufacturing method, so that a step is generated on the surface to be bonded to the base plate. In addition, an adhesive is used for laminating the plates, and the lamination may cause the adhesive to protrude from between the plates, causing irregularities on the surface to be adhered to the base plate. In this manner, if there is a step or unevenness on the surface to be bonded to the base plate, the bonding cannot be performed reliably. Also, if there is a step or unevenness on the surface to be bonded to the base plate, a shear force acts on the bonded surface between the bonded plates due to the force applied at the time of bonding, and the plates are peeled off at the bonded surface.

Further, when the base plate and the nozzle plate are bonded, the adhesive is pressed between the base plate and the nozzle plate. The adhesive distorts in the vertical direction, which is the direction of the pressing force (longitudinal strain), and also in the horizontal direction perpendicular to the direction of the force (lateral strain). The deformation due to the lateral strain of the adhesive, when multiple patterns of the same shape are arranged at equal intervals, except for the pattern at the end of the array,
Deforms to the same shape on average. On the other hand, the pattern near the end of the array, in other words, near the start point and the end point of the array, is greatly deformed. This is because, at the end of the pattern arrangement, the lateral strain of the adhesive in the part where the pattern is not formed is accumulated toward the pattern part and increases.

As described above, since the pattern formed on the adhesive is deformed by the deformation of the adhesive due to the lateral distortion, there is a problem that the adhesive enters the ink flow path and the ink flow path is clogged. .

For this pattern deformation, it is conceivable to eliminate the adhesive surface adjacent to the end of the pattern arrangement. However, when there is no adhesive surface, the adhesive strength is reduced at that portion, and the plate is easily peeled off, which causes ink leakage.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. One of the objects of the present invention is to prevent an adhesive from flowing into an ink flow path without reducing an adhesive force. An object of the present invention is to provide a method for manufacturing an ink jet recording head.

[0011]

According to one aspect of the present invention, there is provided a method of manufacturing an ink jet head, comprising: laminating a thin plate on at least one surface of a base plate; Forming a plurality of nozzles for discharging ink from each of the plurality of ink flow paths in the nozzle plate, and retracting an adhesive for bonding the base plate and the thin plate to the nozzle plate. A base plate and a thin plate in order to bond the base plate and the thin plate to the nozzle plate so that their bonding surfaces intersect with the surface of the nozzle plate on which the plurality of nozzles are formed. Pressing step.

According to the present invention, the thin plate is bonded to the base plate so as to overlap. The base plate and the thin plate are bonded to the nozzle plate such that their bonding surfaces intersect with the surface of the nozzle plate on which the plurality of nozzles are formed.

A retracting portion is formed for retracting the adhesive for bonding the base plate and the thin plate to the nozzle plate, so that when the bonded base plate and the thin plate are pressed to bond the nozzle plate to the nozzle plate,
The adhesive is deformed toward the retreat portion. Thereby, the deformation of the adhesive can be absorbed by the retracting portion. Further, also in the retracting portion, since the adhesive force is obtained by the adhesive deformed and entering the retracting portion, the adhesive force does not decrease. As a result, it is possible to provide a method for manufacturing an ink jet head in which the adhesive is prevented from entering the ink flow path without lowering the adhesive strength.

[0014] Preferably, the step of forming the retreat portion is characterized in that the retreat portion is formed in at least one of an adhesive, a base plate, a thin plate, and a base plate.

The adhesives include those directly applied to the plate by pattern printing and those in the form of a film. The formation of the retraction part in the adhesive is, in the case of the adhesive to be applied,
The retracted portion is included in the pattern applied at the time of pattern printing, and the film-shaped adhesive can form the retracted portion by subjecting the adhesive to photolithography or pressing.

According to the present invention, since the retreat portion is formed on at least one of the adhesive, the base plate, the thin plate, and the base plate, the retreat portion can be easily formed.

More preferably, the method further includes a step of forming a plurality of flow path patterns corresponding to the positions and shapes of the plurality of ink flow paths in the adhesive and having no adhesive.
The step of forming the retreat portion is characterized in that at least one retreat portion having substantially the same shape as the plurality of patterns is formed in accordance with the arrangement of the plurality of flow path patterns.

According to the present invention, at least one retreat portion having substantially the same shape as the plurality of flow path patterns is formed in accordance with the arrangement of the plurality of flow path patterns. The deformed adhesive deforms toward the plurality of flow path patterns and the retreat portion. The retraction part has substantially the same shape as the shape of the plurality of patterns, and is formed at least one in accordance with the interval at which the plurality of patterns are arranged. Therefore, it is possible to make the deformation of the plurality of flow path patterns of the adhesive uniform. it can.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. The same reference numerals in the drawings denote the same or corresponding members, and the description thereof will not be repeated.

FIG. 1 is a diagram showing an overall configuration of an ink jet recording apparatus 10 using an ink jet recording head according to one embodiment of the present invention. Referring to FIG. 1, the inkjet recording apparatus 10 has four lines for ejecting inks of cyan (C), magenta (M), yellow (Y), and black (K) from nozzles by an inkjet method. The head 101 is provided with four ink tanks 107 for storing inks of respective colors, and four ink pipes 103 for supplying the ink in the ink tank 107 to the line head 101.

Here, the line head 101 has a predetermined length corresponding to the sheet width, and both ends are fixed to the carriage belt 105. Therefore, the paper can be reciprocated on the paper in the scanning direction (Z direction in the drawing) by the rotation of the carriage belt 105, and printing can be performed on the entire paper.

The ink jet recording apparatus 10 includes a paper feed unit 109 for feeding paper for recording and a paper feed unit 1.
A transport roller 111 for transporting the paper sent from the printer 09, a transport belt 113 for transporting the paper to a printing position, and the like, and the transported paper is attracted at the printing position and fixed on the transport belt 113. Adsorption device 115 for causing
And a discharge unit 117 for discharging the paper after printing.

It should be noted that the discharge section 117 and the discharge paper stacked thereon are only partially illustrated in order to illustrate the internal structure, and the other parts are not illustrated.

FIG. 2 is a functional block diagram for explaining operation control of the ink jet recording apparatus 10 according to the present embodiment. With reference to this figure, the main controller 201 of the inkjet recording apparatus 10 receives image data read from a scanner or the like from the host computer 203 and stores the image data in a frame memory 205 for a buffer in frame units. Then, based on the image read from the frame memory 205, an ejection signal for ejecting ink is output to the line head 101 via the driver controller 215 and the head driver 217. The head driver 217 controls the timing of outputting the ejection signal.

The main controller 201 also controls the line head feed motor 20 through the motor driver 207 to move the line head 101 during printing.
9 is drive-controlled. By driving the line head feed motor 209, the carriage belt 105 is rotated. Further, the main controller 201 controls the paper feed motor 213 through the motor driver 211 to convey the paper.
Drive control. The driving of the paper feed motor 213 drives the transport roller 111 and the transport belt 113.

FIG. 3 is a partially exploded perspective view for explaining the configuration of the line head 101 in the present embodiment. Referring to FIG. 3, line head 101 has a base plate 301 at the center thereof, a nozzle plate 303 having a plurality of nozzles for ejecting ink, and holders 450 and 45 for holding the head from both sides.
1 is provided.

The line head 101 includes a drawer plate 305 for forming a flow path for drawing ink, an inlet plate 307 for forming an inlet, and an ink channel (pressurizing chamber) as a space for pressurizing the ink. , A piezoelectric element 311 serving as a driving source of ink ejection, and a flexible cable 315 for applying a voltage serving as an ejection signal to the piezoelectric element 311.

These are provided on both sides of the base plate 301 as shown in the figure. In this case, the same head cell composed of the disassembled portions is arranged in three cells here, so that the line width of the line head 101 is secured.

Here, the base plate 301 and the nozzle plate 303 are bonded so that each ink flow path on the end face of the base plate 301 comes to a corresponding nozzle position of the nozzle plate 303, and the drawer plate 305 of the base plate 301 is bonded. The surface of the nozzle plate 303 where the nozzles are formed is bonded so that the surface on which the nozzles are formed intersects perpendicularly.

With such a configuration, the line head 10
1 is provided with ink channels for pressurizing ink on both sides of the base plate 301. One nozzle corresponds to one ink channel. For this reason, the number of nozzles per unit length is twice the number of ink channels per unit length on one side. Specifically, the number of ink channels per inch on one side is 45, the number of ink channels per inch on both sides is 90, and 90 npi (nozzle / inch)
The performance of is realized.

FIG. 4 is a cross-sectional view showing a plane perpendicular to the direction in which the nozzles of the line head 101 in this embodiment are arranged. FIG. 4A is a cross-sectional view illustrating the ink flow paths corresponding to the odd-numbered rows of nozzles. FIG. 4 (B)
FIG. 4 is a cross-sectional view illustrating ink flow paths corresponding to nozzles in an even-numbered row. These two cross-sectional views correspond to one in which the other is shifted by 1/90 inch in the direction in which the nozzles are arranged.

Referring to FIGS. 4A and 4B, in line head 101, drawer plate 305, inlet plate 307, channel plate 309, and diaphragm 401 are laminated on both sides of base plate 301. As a result, an ink flow path including the common ink chamber 417, the inlet 415, the ink channel 413, and the drawer 412 is formed. A piezoelectric element 311 is stacked on a surface of the vibration plate 401 opposite to the ink channel 413. The vibration plate 401 and the piezoelectric element 311 are bonded. Note that the diaphragm 40 is partially provided in the channel plate 309.
1 may be formed, and FIG. 3 shows an example thereof.

In practice, the thickness of the base plate is 1.5 [mm], and the thickness of the drawer plate 305 is 200 [μ].
m], and the thickness of the inlet plate 307 is 50 [μ].
m] and the thickness of the channel plate 309 is 150 μ
m], the thickness of the diaphragm 401 is 3 to 30 [μm], and the thickness of the nozzle plate 303 is 0.15 [mm].

FIG. 4A shows a cross section at the center plane of the ink flow path corresponding to the nozzles in the odd rows.
The center plane here is a plane whose normal line is the direction in which the ink channels 413 are arranged (the direction in which the nozzles are arranged), and refers to a plane passing through the center of the ink channel. FIG. 4 (A)
In the figure, the ink flow paths corresponding to the odd-numbered rows of nozzles are shown, but the ink flow paths corresponding to the even-numbered rows of nozzles are not shown. In this cross section, the side having the ink flow paths corresponding to the nozzles in the even-numbered rows (the base plate 301 in FIG. 4A)
(Lower side) represents a partition wall provided between the ink flow paths.

FIG. 4B shows a cross section of the ink flow path corresponding to the even-numbered rows of nozzles at the center plane.
As in FIG. 4A, the ink flow paths corresponding to the nozzles in the even rows are shown, but the ink flow paths corresponding to the nozzles in the odd rows are not shown.

Although the inlet 415 is provided at the center of the ink flow path, it may be provided at a position off the center of the ink flow path. Further, the common ink chamber 417 is provided separately for the ink flow path corresponding to the odd-numbered row nozzles and the ink flow path corresponding to the even-numbered row nozzles. A common ink chamber may be used in common with the ink flow paths corresponding to the nozzles in the even-numbered rows.

The base plate 301, the drawer plate 305, the inlet plate 307, the channel plate 309, and the diaphragm 401 are bonded to the nozzle plate 303 with a film adhesive 510. Base plate 301
And the extraction plate 305, the inlet plate 307, the channel plate 309, and the end face to which the vibration plate 401 is bonded, in other words, the respective plates 301 and 30
The surface where 5, 307, 309 and 401 are bonded to the nozzle plate 303 is not flat but has a step on the bonding surface. This is because the materials and manufacturing methods of the respective plates are different.

The inlet plate 307 is processed by an electroforming method. On the other hand, the extraction plate 305, the channel plate 309, and the diaphragm 401 are processed by etching. As described above, since the processing methods are different, an error occurs in the dimensional accuracy. When the plates are bonded so that the ink flow paths are formed correctly, the bonded plates 301, 305, 30
Steps may occur at the end faces of 7, 309 and 401.
In addition, an adhesive is used for laminating the plates. However, the adhesive may protrude from between the plates, and irregularities may be formed on the end faces of the laminated plates 301, 305, 307, 309, and 401.

In the present embodiment, a film adhesive 510 is used to absorb the step. The film adhesive 510 is a thermosetting epoxy resin having a thickness of 15 to 100 [μm]. In addition, the film adhesive 51
For 0, an acrylic resin or a urethane resin may be used.

By using the film adhesive 510,
Even if a step or unevenness occurs on the end face where the base plate 301, the extraction plate 305, the inlet plate 307, the channel plate 309, and the vibration plate 401 are bonded,
Plates 301, 305, 307, 309, 4 attached
No shearing force is generated at the bonded part between 01 and
The plate does not peel off. Therefore, it is possible to prevent the ink from leaking from the ink flow path.
In addition, the above-described manufacturing error can be tolerated, and the plate can be easily positioned so that the ink flow path is formed correctly.

In the nozzle plate 303, a communication path 411 is formed as an ink flow path leading to a nozzle 410 described later.

The nozzle plate 3 of the base plate 301
A projection 350 protruding from the surface of the base plate 301 is provided at the end opposite to the side to be bonded to 03. Since the protruding portion 350 protrudes from the surface of the base plate 301, it is thicker than the thickness of the base plate 301. In addition, as shown in FIG.
It is a part of the end face opposed to the end face bonded to the nozzle plate 303, and is a plane parallel to the end face bonded to the nozzle plate 303. Note that the protruding portion 350 can be formed at any position on the base plate 301 as long as it is formed so as to protrude from the surface of the base plate 301. Further, it is more preferable that the protruding portion has a plane parallel to an end face bonded to the nozzle plate 303,
Various shapes such as a circle, a square, and a polygon can be applied to the shape of the plane.

FIG. 5 is a plan view of a part of the nozzle plate 303 provided in the line head 101 according to the present embodiment. FIG. 6 is a sectional view showing a part of a section taken along line AA of FIG. Referring to FIGS. 5 and 6, the nozzle plate 303 has a plurality of nozzles 410 for flying ink. In the present embodiment, the nozzle is 90 [n
[pi] in the X direction in the figure.

In the nozzle plate 303, connecting paths 411A and 411B are formed. Connection road 411
A and 411B are a base plate 301 and a drawer plate 305.
This is an ink flow path that connects the drawing section 412 formed by the above and the nozzle 410.

FIG. 7 is a diagram for explaining the principle that the line head 101 in this embodiment flies ink. FIG. 7A is a diagram illustrating a case where ink is ejected from nozzles in an odd-numbered row, and FIG. 7B is a diagram illustrating a case where ink is ejected from nozzles in an even-numbered row. FIG. 7 (A)
Referring to FIG. 7B, when a voltage is applied to piezoelectric element 311, piezoelectric element 311 tends to contract in the direction indicated by the black arrow due to the piezoelectric phenomenon. In this case, one side of the piezoelectric element 311 cannot be freely shrunk because it is restrained by the diaphragm 401. Therefore, the piezoelectric element 311 bends in the direction in which the ink channel is pushed (in this drawing, the vertical direction on the paper (the direction indicated by the white arrow) is the pressing direction). Due to this bending, the ink channels 413 are pressurized, and ink droplets are ejected from the corresponding nozzles 410 of the nozzle plate 303. In this manner, ink can be ejected from the nozzles in the odd rows and the nozzles in the even rows.

In the line head 101 having such a configuration, the bonding is performed such that the direction in which the piezoelectric element 311 is bent (pressure direction) is perpendicular to the direction of ink ejection.

FIG. 8 is a flowchart showing a flow of a process for manufacturing the line head 101 in the present embodiment.
Referring to FIG. 8, the production of the line head 101 is such that the extraction plate 305 and the inlet plate 3 are attached to the base plate 301.
07, channel plate 309, and diaphragm 401
Are bonded (step 601).

Next, the film adhesive 510 is patterned (step 602). Film adhesive 51
At 0, a removal pattern 512 from which the adhesive has been removed and a retreat pattern 516 are formed. This will be described in detail later.

Next, the nozzle plate 303, the base plate 301, and the holders 450 and 451 are positioned on the jig (step 603). Note that the nozzle plate 303 is processed in another process by two-stage electroforming or two-stage etching.

Then, the base plate 301 and the drawer plate 305 and the holders 450 and 451 are thermocompression-bonded to the nozzle plate by the thermocompression bonding device (step 604). Pressing of the holders 450 and 451 against the nozzle plate and pressing of the base plate 301 against the nozzle plate are heated while being performed separately. Note that the holder 4
A film adhesive 510 is inserted between the base plate 301 and the nozzle plate 303. When the film adhesive 510 is heated, the holders 450 and 451 and the base plate 301 are heated.
And the nozzle plate are adhered.

Thereafter, a resin is sealed in the holders 450 and 451 (step 605). Next, the patterning of the film adhesive 510 in the step 602 will be described. FIG. 9 is a diagram showing a change in a pattern formed on the film adhesive before and after pressing. FIG. 9A shows a state before pressing, and FIG. 9B shows a state after pressing.
Referring to FIG. 9A, the film adhesive 510 includes:
A removal pattern 512 from which the adhesive has been removed is formed corresponding to the position and shape of the connection path 411, which is an ink flow path formed in the nozzle plate 303. In the figure, the nozzle 410 is drawn by a dotted line in order to clearly show the position of the removal pattern 512.
Is not present in film adhesives.

Referring to FIG. 9B, the removal pattern 512 is not formed at the end 514 of the film adhesive 510. Therefore, when the film adhesive 510 is pressed, the lateral distortion of the adhesive at the end 514 of the film adhesive 510 is accumulated toward the formed removal pattern 512 and increases. As a result, the adhesive enters the removal pattern 512 and the ink flow path is clogged. The film adhesive 510 in the present embodiment is
A retreat portion is provided for preventing the adhesive from entering the ink flow path. The evacuation unit will be described.

FIG. 10 is a diagram showing a pattern formed on film adhesive 510 in the present embodiment.
FIG. 10A shows a state before pressing, and FIG. 10B shows a state after pressing. Referring to FIG.
A removal pattern 512 from which the adhesive has been removed and a retreat pattern 516 are formed on the film adhesive 510.

The removal pattern 512 corresponds to the nozzle plate 3
The adhesive has been removed corresponding to the position of the connection path 411, which is the ink flow path formed in 03. Removal pattern 51
The shape of 2 is similar to the shape of the connection path 411, and is slightly larger. The removal pattern 512 is formed in a shape larger by the amount of deformation of the removal pattern that is deformed when the film adhesive 510 is pressed.

The retreat pattern 516 is the same as the removal pattern 51.
The shape and the arrangement interval are the same as those of No. 2. Here, four evacuation patterns are provided. Here, four retreat patterns 516 are provided, but the number is not limited thereto, and one or more retreat patterns 516 may be provided. The number of evacuation patterns may be adjusted so that the removal patterns 512 have the same deformation on average. In the figure, the nozzle 410 is drawn by a dotted line to clearly show the position of the removal pattern 512, but the nozzle 410 is not actually present in the film adhesive.

Referring to FIG. 10B, four retreat patterns 516 are formed at end 514 of film adhesive 510. The deformation of the end portion 514 due to the lateral strain in the lateral direction due to the pressing of the film adhesive 510 goes to the retreat pattern 516. Thereby, the deformation of the end portion 514 of the adhesive sheet 510 due to the lateral strain is prevented by the retreat pattern 516.
Therefore, the influence on the removal pattern 516 is reduced.

In the present embodiment, known photolithography is used for patterning the film adhesive 510. Alternatively, the pattern may be formed by pressing. Further, as the film adhesive, a dry film such as PR135 manufactured by Tokyo Ohka Kogyo Co., Ltd. may be used. Alternatively, an adhesive such as Able Bond 342-3 manufactured by Able Stick Co., Ltd. may be applied by pattern printing on the bonding surface.

[Modification of Retraction Pattern] Next, a modification of the retraction unit will be described. FIG. 11 is a view showing a modified example of the retracting portion formed on the film adhesive in the present embodiment. Referring to FIG. 11, four retreat patterns 516 are connected by grooves 518. Further groove 518
Has reached the end of the film adhesive 510. In the figure, the nozzle 410 is drawn by a dotted line to clearly show the position of the removal pattern 512, but the nozzle 410 is not actually present in the film adhesive.

As described above, since the retreat pattern 516 and the groove 518 are formed in the film adhesive 510, the retreat pattern 516 of the sheet adhesive sheet 510 is formed by bonding the base plate 301 and the nozzle plate 303.
Even if it is sandwiched between them, it is not shut off from the outside air. Therefore, even if the air in the evacuation pattern 516 expands, the air in the evacuation pattern 516 escapes from the groove 518 even when heated during bonding, so that the pressure in the evacuation pattern 516 does not increase. For this reason, the adhesive portion does not come off due to the expansion of the air in the retreat pattern 516. In addition,
The removal pattern 512 is connected to the outside air by the nozzle 410.

Next, the positioning in step 603 will be described. FIG. 12 shows holders 450 and 451 of line head 101 and base plate 3 in this embodiment.
It is a figure showing the positional relationship with 01. FIG. 13 is a cross-sectional view showing a cross section taken along line BB of FIG. Referring to FIG. 12 and FIG.
50 and the holder 451 are bonded to each other at both ends. Third reference surface 453 of holder 450 and holder 45
The first fourth reference surface 455 sandwiches the positioning pin 501 of the jig. The holder 451 has a ball plunger 503 urged by a spring. Then, the ball plunger 503 connects the base plate 301 to the first of the holder 450.
Press against reference plane 457. Also, the base plate 30
The positioning pin 501 of the jig enters the one reference groove 370.

The base plate 301 and the nozzle plate 3
Positioning with respect to 03 is performed as follows. (1) The nozzle plate is positioned on the jig by inserting the reference holes 505 (see FIG. 14) of the nozzle plate 303 into the positioning pins 501 of the jig. (2) Third reference surface 453 of holder 450 and holder 451
By holding the positioning pin 501 of the jig between the fourth reference surface 455, the holder 450 and the holder 451 are positioned on the jig. (3) When the ball plunger 503 urged by the spring presses the base plate 301 against the first reference surface 457 of the holder 450, the base plate 301 is set at a position where it can move in parallel with the first reference surface 457. This position is a relative position between the base plate 301 and the holder 450. (4) Since the second reference surface 459 of the holder 450 is in contact with the nozzle plate 303, the angle between the base plate 301 and the nozzle plate 303 is determined by the angle between the first reference surface and the second reference surface. . In the present embodiment, first reference plane 457 and second reference plane 459
Is 90 degrees. (5) The positions of the base plate 301 and the nozzle plate are determined by aligning the reference grooves 370 of the base plate 301 with the positioning pins 501 of the jig.

As described above, the positions of the holders 450 and 451 with respect to the nozzle plate 303 in the Y direction in the figure and the positions of the base plate 301 with respect to the nozzle plate 303 in the X and Y directions in the figure are determined by the positioning pins 501 of the jig.

The base plate 301 is pressed against the first reference surface 457 of the holder, and the second reference surface 4
Since 59 is bonded to the nozzle plate, the angle between base plate 301 and nozzle plate 303 is determined.

Next, the pressing in step 604 will be described. FIG. 14 is a diagram illustrating a pressing process for manufacturing the line head 101 according to the present embodiment. Referring to FIG. 14, a film-like adhesive 5 having a thickness of about 15 to 100 μm is provided between holders 450 and 451 and between base plate 301 and nozzle plate 303.
10 is inserted.

The base plate 301 is pressed against the nozzle plate with a force F1, and the holders 450 and 451 are pressed against the nozzle plate with a force F2. The force F1 and the force F2 may be the same or different.

As described above, since the holders 450 and 451 and the base plate 301 are separately pressed,
The base plate 301 can be pressed without being affected by the step of pressing the holders 450 and 451.
Further, since the direction of the pressing force can be determined independently, the base plate 301 can be pressed in an accurate direction with respect to the nozzle plate 303.

Further, a force F 1 for pressing the base plate 301 is applied to the projection 350. The base plate 301 is a part of the protrusion 350,
1 is thicker. Base plate 301
The ratio of the thickness to the height increases at the protruding portion 350. Therefore, it is easy to determine the direction in which the base plate 301 is pressed against the nozzle plate 303.

Further, since the area of the pressed portion of the projection 350 is larger than that of the portion without the projection 350,
A large force can be applied to the entire base plate without increasing the force applied to the unit area of the base plate 301.

Further, the pressed portion of the protruding portion 350 is a plane parallel to the end face of the base plate 301 bonded to the nozzle plate 303. For this reason, if the pressing jig is made flat, the position where the jig contacts the base plate 301 can be determined by the surface contact between the protruding portion 350 and the jig.
The position of the base plate 301 can be determined so that is perpendicular to the nozzle plate 303. Further, a force in a vertical direction may be applied to the protruding portion 350 by a jig, and the pressing can be performed while the base plate 301 is maintained in a correct direction.

As described above, the line head 101 according to the first embodiment employs the film adhesive 510.
Is provided with the retreat pattern 516, so that the base plate 3
Even when the film adhesive 510 is pressed to adhere the nozzle plate 01 and the nozzle plate 303, the film adhesive 510 can be prevented from being deformed and entering the ink flow path. Further, since the retraction pattern 516 has the same shape and arrangement as the removal pattern 514, the deformation of the removal pattern 514 can be made uniform. As a result, deformation of the ink flow path can be prevented, and a line head having a uniform flying speed and flying direction of ink can be manufactured.

Further, when the base plate 301 and the nozzle plate 303 are bonded, the retreat pattern 516 is formed.
Was formed with a groove 518 for communicating with the outside air. For this reason, the retreat pattern 516 is not hermetically sealed, and the adhesive surface can be prevented from peeling off due to expansion due to heating.

In the present embodiment, a thickness of 15 to 10
A film adhesive of 0 [μm] was used. The thickness of the film adhesive is not limited to this, and is determined according to the pressing pressure. Therefore, a film adhesive having a thickness of 15 [μm] or less can be used. Also, a predetermined thickness in place of the film adhesive, for example,
It can also be applied to an adhesive applied to a thickness of 2 to 3 [μm].

[Second Embodiment] In the second embodiment, the retracting portion is provided on one or both of the base plate 301 and the nozzle plate 303.

FIG. 15 is a diagram for explaining the bonding surface between the base plate 301 and the nozzle plate 303 of the line head 101 according to the second embodiment. FIG.
, The nozzle plate 3 of the base plate 301
Four evacuation grooves 520 are formed as evacuation parts on the surface to be bonded with 03.

The film adhesive 510 has a removal pattern 512 from which the adhesive has been removed. The removal pattern 512 corresponds to the position and shape of the connection path 411, which is an ink flow path formed in the nozzle plate 303,
The adhesive has been removed.

The evacuation groove 520 has the same shape as the removal pattern 512. The position where the retreat groove 520 is formed is a position that is determined by the arrangement of the removal patterns 512 at a position that does not face the connection path 411 when the base plate 301 and the nozzle plate 303 are bonded. In other words,
When the retraction groove 520 is projected on the film adhesive 510,
The projected patterns are arranged according to the arrangement of the removal patterns 512.

The base plate 301 and the nozzle plate 3
When pressing is performed to bond the third adhesive layer 03 to the second adhesive layer, the pressure of the film adhesive 510 in the escape groove 520 becomes lower than that of the other parts. As a result, the deformation of the end portion 514 of the film adhesive 510 due to the lateral strain is prevented by the retraction groove 520.
Head for. Thus, the deformation of the end portion 514 of the film adhesive 510 due to the lateral strain is absorbed by the retreat groove 520, so that the influence on the removal pattern 516 is reduced. As a result, it is possible to prevent the film adhesive 510 from entering the ink flow path. Also, the evacuation groove 5
20 has the same shape and arrangement as the removal pattern 512, so that the removal pattern 512 can be uniformly deformed.

Although the drawing shows an example in which the retreat groove 520 is provided in the base plate 301, it may be provided in the nozzle plate 303.
And the base plate 301 may be provided. When it is provided on the nozzle plate, it may be formed in the same shape and the same arrangement as the connection path 411, so that the processing is easy.

Further, it is preferable to provide a groove communicating with the outside air so as not to seal the escape groove 520. Thereby, it is possible to prevent the peeling of the adhesive due to the expansion of the gas in the evacuation groove 520.

[Third Embodiment] In the third embodiment, a jig for pressing the nozzle plate 303 is provided with a retreat groove 532. FIG. 16 shows the base plate 30 of the line head 101 according to the third embodiment.
FIG. 4 is a diagram for explaining a bonding process between the nozzle plate 1 and a nozzle plate 303. Referring to FIG. 16, four escape grooves 532 are formed on the surface of jig 530 that contacts nozzle plate 303.

The film adhesive 510 has a removal pattern 512 from which the adhesive has been removed. The removal pattern 512 corresponds to the position and shape of the connection path 411 that is the ink flow path formed in the nozzle plate 303, and the adhesive has been removed.

The retraction groove 532 has the same shape as the removal pattern 512. The position where the retreat groove 532 is formed is a position determined by the arrangement of the removal patterns 512 at a place where the jig 530 and the nozzle plate 303 do not face the connecting path 411 when they come into contact with each other. In other words, the evacuation groove 532
Is projected onto the film adhesive 510, the projected pattern is arranged according to the arrangement of the removal patterns 512.

The base plate 301 and the nozzle plate 3
When the nozzle plate 303 is pressed by the jig 530 in order to adhere to the nozzle plate 303, the nozzle plate 303 is pushed from the film-like adhesive by a reaction force and is deformed toward the jig 530 at the retreat groove 532. Then, the deformation of the end portion 514 of the film adhesive 510 due to the lateral strain is directed to the deformed portion of the nozzle plate. Thereby, the film adhesive 510 is formed.
The deformation due to the lateral strain at the end portion 514 is absorbed by the deformed portion of the nozzle plate, so that the influence on the removal pattern 516 is reduced. As a result, it is possible to prevent the film adhesive 510 from entering the ink flow path.

Further, the retreat groove 532 is formed with the removal pattern 51.
2 has the same shape and arrangement as in FIG.
2 can be made uniform.

As shown in FIG. 1, the width of the line head 101 is set as the paper width in this case, but the present invention is not limited to this. The application of the invention is possible.

Further, as shown in FIGS. 3 and 4, etc., the line head 101 provided with ink channels and the like on both sides of the base plate 301 is shown, but the present invention is not limited to this configuration. Therefore, the present invention can be applied to a line head having a configuration in which a flow path and an ink channel are provided only on one surface of the base plate 301.

The embodiment disclosed this time is an example in all respects, and should not be construed as limiting. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

[Brief description of the drawings]

FIG. 1 is an inkjet recording apparatus 1 using an inkjet recording head according to one embodiment of the present invention.
FIG. 2 is a diagram showing an overall configuration of a zero.

FIG. 2 is a functional block diagram illustrating operation control of the inkjet recording apparatus 10 according to the present embodiment.

FIG. 3 is a partially exploded perspective view illustrating a configuration of a line head 101 according to the present embodiment.

FIG. 4 is a cross-sectional view showing a plane perpendicular to the direction in which nozzles of the line head 101 are arranged in the present embodiment.

FIG. 5 is a plan view of a part of a nozzle plate 303 included in the line head 101 according to the present embodiment.

6 is a sectional view showing a part of a section taken along line AA of FIG. 5;

FIG. 7 is a diagram for explaining the principle that the line head 101 in the present embodiment flies ink.

FIG. 8 is a flowchart showing a flow of a process of manufacturing the line head 101 in the present embodiment.

FIG. 9 is a diagram showing a change in a pattern formed on a film adhesive before and after pressing.

FIG. 10 shows a film adhesive 5 according to the present embodiment.
FIG. 10 is a view showing a pattern formed on a reference numeral 10.

FIG. 11 is a view showing a modified example of a retracting portion formed in the film adhesive in the present embodiment.

FIG. 12 shows a line head 101 according to the present embodiment.
FIG. 6 is a diagram showing a positional relationship between holders 450 and 451 and a base plate 301.

FIG. 13 is a cross-sectional view showing a cross section taken along line BB of FIG.

FIG. 14 shows a line head 101 according to the present embodiment.
It is a figure for explaining the pressing process for manufacturing.

FIG. 15 shows a line head 1 according to a second embodiment.
FIG. 11 is a diagram for explaining an adhesive surface between a base plate 301 and a nozzle plate 303 of FIG.

FIG. 16 shows a line head 1 according to a third embodiment.
FIG. 11 is a view for explaining a bonding step between the base plate 301 and the nozzle plate 303 of FIG.

[Explanation of symbols]

Reference Signs List 10 inkjet recording device, 101 line head, 103 ink pipe, 105 carriage belt, 113 transport belt, 115 suction device, 201
Main controller, 215 driver controller,
217 head driver, 301 base plate, 3
03 nozzle plate, 305 drawer plate, 307 inlet plate, 309 channel plate, 311
Piezoelectric element, 315 flexible cable, 350 protrusion, 401 diaphragm, 450, 451 holder, 50
3 Ball plunger, 516 evacuation pattern, 52
0,532 Evacuation groove.

Claims (4)

[Claims] A step of forming a plurality of ink flow paths by laminating and bonding a thin plate on at least one surface of a base plate; and forming a plurality of nozzles for discharging ink from each of the plurality of ink flow paths. A step of forming an evacuation section for evacuation of an adhesive for adhering the base plate and the thin plate to the nozzle plate; and an adhesion surface of the base plate and the thin plate, the adhesive surface of which is the nozzle. Pressing the base plate against the nozzle plate to adhere to the nozzle plate so as to intersect with the surface of the plate where the plurality of nozzles are formed. 2. The method according to claim 1, wherein the step of forming the evacuation portion includes forming the evacuation portion on at least one of the adhesive, the base plate, the thin plate, and the base plate. Of manufacturing an ink jet recording head. 3. The method according to claim 1, further comprising: forming a plurality of flow path patterns in which no adhesive is present, corresponding to positions and shapes of the plurality of ink flow paths in the adhesive, and forming the retreating section. 3. The ink jet recording head according to claim 1, wherein at least one retreat portion having substantially the same shape as the shape of the plurality of patterns is formed in accordance with the arrangement of the plurality of flow path patterns. Production method. 4. An ink jet recording head manufactured by the method for manufacturing an ink jet recording head according to claim 1.