JPH04197715A - Method and apparatus for sealing ink jet recording head with resin - Google Patents

Abstract

PURPOSE:To attempt to perform sure sealing of a gap generated on a contact face between a base material and a top material by holding obliquely an ink jet recording head with a nozzle facing downward and casting a resin into a position surrounded by a frame part of a structure. CONSTITUTION:A dispenser 30 is positioned at an opening part surrounded by a frame part 23 of a chip tank 19 of an ink jet recording head A. After completion of positioning, a resin 27 in the dispenser 30 is cast into the opening part from a casting hole 30a. The cast resin 27 is penetrated into a gap between the upper face of a heater board 24 and the lower face of a top material 22. The ink jet recording head A is held obliquely with a nozzle 22b facing downward and the resin entering the gap flows to the nozzle 22b side along the gap by gravity and reaches the rear of an orifice plate 25. The resin which has reached the rear of the orifice plate 25 furthermore enters by gravity into fine gaps between the back surface of the orifice plate 25 and the front surface of the heater board 24a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a resin sealing method and apparatus for an inkjet recording head used in an inkjet recording apparatus.

[Prior Art] A conventional inkjet recording head has a configuration as shown in FIG.

A heater board 3x is fixed on the base plate 1x, and circuits such as an electrothermal converter and a diode for heating the ink are incorporated in the heater board 3x. A rear portion of the top member 6x is fixed onto the heater board 3x with an adhesive. A fine groove 6Xa is formed on the lower surface of the top member 6x, and the fine groove 6Xa and the heater hoard 3X constitute an ink flow path 8X. moreover,
An orifice plate 7X is formed on the front surface of the top member 3x in parallel with the base plate front surface IXa. A discharge port 6Xb is formed in the orifice plate 7x in correspondence with the fine groove 6Xa. Further, the back surface of the orifice plate 7x is in contact with the heater hoard front surface 3Xa.

Recording ink is supplied from a tank (not shown) to the top member 6x.
The ink is supplied to the ink flow path 8x via the chip tank 4x connected to the ink introduction port lOx formed on the top surface,
It is held within the ink flow path 8X. At this time, the board 2X
When electricity is applied to the electrothermal transducer of the heater boat 3x via the wire 9x by a circuit built in the circuit that gives a drive command to the circuit of the heater boat 3X, the ink on the electrothermal transducer is heated and a foaming phenomenon occurs. The bubbling energy causes ink droplets to be ejected from the ejection port 6Xb.

[Problems to be Solved by the Invention] However, the above conventional example has the following problems.

(1) A gap of about 2 μm may occur at the contact surface between the heater boat and the top member that constitute the ink flow path, depending on the machining accuracy of the surface of the heater boat and the top member, the thickness of the adhesive, etc. If a gap occurs in the ink flow path, the ink in the ink flow path supplied from the chip tank will flow into the gap, resulting in uneven ink ejection volume, or the ink that has flowed into the gap may cause problems with the inkjet. The inkjet print head bleeds to the outside of the print head and becomes dirty. The phenomenon of fluid flowing into the gap is noticeable between the thin walled portions of the orifice plate and the heater board.

(2) Since the ink used has a high hydrogen ion concentration index (pH) and is conductive, the ink that flows out corrodes the wire, reducing the reliability of the inkjet recording head.

(3) The positional accuracy of the orifice plate with respect to the heater hoard decreases due to the gap created between the back surface of the orifice plate, which is a thin portion, and the front surface of the heater boat, resulting in uneven dimensional accuracy of the inkjet recording head.

The present invention has been made in view of the problems of the above-mentioned prior art, and it is possible to reliably seal with a resin so that ink does not flow into the gap between the base member and the top member that constitute the ink flow path. Another object of the present invention is to provide a resin sealing method for an inkjet recording head and an apparatus therefor, which can obtain inkjet recording heads of uniform dimensions.

[Means for Solving the Problems] In order to achieve the above object, the resin sealing method for an inkjet recording head of the present invention includes fine grooves and ejection corresponding to the fine grooves in a base member fixed on a base plate. An inkjet recording head is assembled, in which a top member having an orifice plate with an outlet formed therein is fixed to form an ink flow path, and a structure having a frame portion surrounding an open portion on the orifice plate side is provided on the base plate. holding the inkjet recording head obliquely with the ejection ports facing downward, pressing the front surface of the orifice plate, and injecting resin into the area surrounded by the frame in the pressed state; It is characterized by

Further, in the method according to claim 2, a top member having a fine groove and an orifice plate formed with an ejection port corresponding to the fine groove is fixed to a base member fixed on a base plate to form an ink flow path. configured, on the base plate,
A plurality of inkjet recording heads each having a structure having a frame surrounding the opening on the orifice plate side are assembled, and the plurality of inkjet recording heads are arranged in parallel on the same straight line and each of the ejection ports While holding the orifice plate diagonally downward, press the front surface of the orifice plate of each inkjet recording head, and inject resin into the portion surrounded by the frame of each inkjet recording head while being pressed. It is characterized by this.

Furthermore, when pressing the front surface of the orifice plate of the inkjet recording head, it is effective to press the structure from above.

The apparatus used to carry out the method according to claim 1 includes: a base having a slope; and an orifice plate in which a base member fixed to the base plate has fine grooves and discharge ports corresponding to the fine grooves. An inkjet recording head can be mounted on the base plate, the structure having a frame portion surrounding the opening on the orifice plate side. a slide member provided on a slope so as to be movable in the direction of the slope; a positioning means for positioning the inkjet recording head on the slide member; and a means for urging the slide member downward in the direction of the slope of the base. a first biasing means;
an abutting member that abuts against the front surface of the orifice plate of the inkjet recording head on the slide member biased by the first biasing means; and an abutting member for injecting resin into a region surrounded by the frame of the inkjet recording head. An apparatus used for carrying out the method according to claim 2, comprising: a base having an inclined surface; a base member fixed on a base plate; An ink jet recording comprising: a top member having an orifice plate formed with a corresponding ejection port; fixed thereto to form an ink flow path; and a structure having a frame surrounding an opening on the orifice plate side provided on the base plate. A slide member capable of mounting a plurality of heads and provided movably in the direction of the slope on the slope of the base, and positioning the plurality of inkjet recording heads on the slide member so as to be parallel to each other on the same straight line. positioning means; a first urging means for urging the slide member downward in the direction of inclination of the slope of the base; and each inkjet recording head of the slide unit Murakami urged by the first urging means. An abutment member that abuts against the front surface of the orifice plate; and an injector for injecting resin into a region surrounded by the frame of each inkjet recording head.

Furthermore, the apparatus used to carry out the method according to claim 3 includes a second urging means for urging the structure of the inkjet recording head downward.

[Function] In the invention according to claim 1 configured as described above, when the inkjet recording head is held obliquely with its ejection ports facing downward and the front surface of the orifice plate is pressed, the back surface of the orifice plate is pressed. The gap between the front surface of the curtain member and the front surface of the curtain member is extremely small. In this state, by injecting resin into the area surrounded by the frame, the injected resin flows into the gap between the contact surfaces of the base member and the top member, and moves downward along the gap by its own weight. In other words, it flows toward the discharge port. Further, the resin that has reached the back surface of the orifice plate flows into the minute gap between the contact surface between the back surface of the orifice plate and the front surface of the base member due to its own weight, and flows into the contact surface between the base member and the top member. The gap is completely sealed by the resin, and deformation of the orifice plate due to the sealing is also prevented.

[Example 2] Next, an example of the resin sealing method for an inkjet recording head of the present invention will be described with reference to the drawings. First, an inkjet recording head manufactured using the resin sealing method for an inkjet recording head of the present invention will be described with reference to FIGS. 4 and 5.

FIG. 4 is a plan view showing an example of an inkjet recording head, and FIG. 5 is a sectional view taken along the line Y--Y.

The base plate 17 serves as a reference for positioning the inkjet recording head A when it is mounted on an inkjet recording apparatus. A heater hoard 24 as a base member is fixed to the upper surface of the base plate 17 with an adhesive, and a foot portion 26 is fixed to the lower surface of the heater hoard 24, and the base plate front surface 17a and the heater hoard front surface 24a are on the same plane. The heater port 24 incorporates an electrothermal converter (not shown) as a means for generating thermal energy and a circuit (not shown) including a diode and the like for driving the converter. A rear portion of the top member 22 is fixed to the upper surface of the heater hoard 24 with adhesive. A fine groove 22a having a depth of 43.5 μm is formed on the lower surface of the top member 22 toward the front surface of the top member 22, and a portion surrounded by the fine groove 22a and the heater hoard 24 becomes an ink flow path 29. The aforementioned electrothermal converter is provided within this ink flow path 29. On the front surface of the top member 22, a thin orifice plate 25 is formed parallel to the base plate front surface 17a with a thickness of 0°2 mm, and the back surface of the orifice plate 25 is in contact with the base plate front surface 17a and the heater hoard front surface 24a. ing. Further, the orifice plate 25 has ejection openings 22b for ejecting ink corresponding to the fine grooves 22a. Further, an ink introduction port 28 is opened on the upper surface of the top member 22 and communicates with the fine groove 22a. These base plate 17, heater boat 24 and top member 22
is clamped from the top and bottom directions in the drawing by an M-shaped presser plate spring 21 having a locking portion 21a whose tip end faces inward.

A substrate 18 is provided on the base plate 17 with a gap between it and the heater board 24 . A circuit for giving a driving command to the circuit of the heater board 24 is built into the substrate 18, and the circuit of the heater board 24 and the circuit of the substrate 18 are connected by a wire 20. Base plate 17
A chip tank 19, which is a structure, is provided on the upper surface of the drawing. A conduit portion of the chip tank 19 passes through the substrate 18 and the base plate 17 and communicates with an ink tank (not shown). The ink supplied from the ink tank passes through the chip tank 19 and is supplied into the ink channel 29 from the ink introduction port 28. Further, the open part on the orifice plate 25 side is connected to the frame part 23 of the chip tank 19.
surrounded by. Therefore, the upper part of the top member 22 and the upper part of the heater board 24 are open except for the chip tank 19. The above-described ink tank is fixed to the base plate 17 after being sealed with resin, which will be described later.

Then, the heater boat 24, the top member 22, and the wire 2
0 is sealed with a resin 27 such as silicone resin or urethane resin. The upper surface of the heater boat 24 and the lower surface of the top member 22 are fixed with adhesive as described above, but depending on the processing accuracy of the heater board 24 and the top member 22, the thickness of the adhesive, etc., the upper surface of the heater board 24 A gap of about 2 μm may occur between the top member 22 and the lower surface of the top member 22. By sealing the heater hoard 24 and the top member 22 with the resin 27, the resin 27 seals the heater hoard 24 and the top member 22.
Since the ink flows into the gap between the contact surface with the heater hoard 24 and completely seals the ink flow path 29, the ink supplied into the ink flow path 29 will not flow into the gap between the heater hoard 24 and the top member 22. Furthermore, by sealing the connection between the ink introduction port 28 and the chip tank 19, ink leakage at the connection can be prevented. Further, a connection portion between the heater boat 24 and the wire 20, a connection portion between the substrate 18 and the wire 20, and a connection portion between the heater boat 24 and the wire 20,
By sealing the connection part with 0 and the wire 20 itself,
It also strengthens each connection.

In the above configuration, a plurality of fine grooves 22a may be formed in the direction perpendicular to the plane of the paper. In that case, the electrothermal converter on the discharge port 22b and the heater board 24 is
The same number of microgrooves 22a are provided depending on the position of the microgrooves 2a.

Further, the ink introduction port 28 has a structure such that it communicates with each of the fine grooves 22a.

Furthermore, the energy generation means uses an electromechanical transducer such as a piezo element, or irradiates and absorbs electromagnetic waves such as a laser to generate heat in the ink, and the effect of the heat generation causes ink droplets to be ejected and flown. It may also be one that uses energy generation means.

Next, an embodiment of the resin sealing method for a 1'-ink sheet recording head according to the present invention will be described.

First, FIGS. 1, 2, and 3(a) show a resin sealing device for an inkjet recording head.

This will be explained with reference to (b).

This resin sealing device is capable of simultaneously sealing three inkjet recording heads A, B, and C with resin. The upper surface of the inclined plate 1, which is a base, is a slope inclined at approximately 15 degrees from the horizontal plane, and a substantially flat plate-shaped guide member 3 is fixed on the slope. ° Slanted.

Three protrusions 3a (two protrusions are not shown) each having a screw hole 3b are integrally formed at a predetermined interval on the upper surface of the upper end (right end in the figure) of the guide member 3, A set screw 10 having a hexagonal hole is screwed into the tapped hole 3b of each protrusion 3a. On the other hand, guide member 3
There are three fixing members 4 (
These three fixing members 4 are arranged on the same straight line, and the distance between them is equal to the distance between the three protrusions 3a.

Further, on the upper surface of the central part of each fixing member 4, an abutting member 5 whose distal end has an acute-angled cross-sectional shape is provided, and is collinear with each fixing member 4 by a screw 9. It is fixed to 3.

On the upper surface of both ends of each fixing member 4, a presser plate spring 6a, which is a second biasing means and has a U-shape in plan view, is provided.

6b and 6c are each fixed by screws 8,
The free end portion 7 of each presser plate spring 6a, 6b, 6c is bent into a dogleg shape.

A slide member 2 is provided above the guide member 3, and the slide member 2 is formed with three grooves 28 (the two grooves are not shown) into which the three protrusions 3a fit respectively. has been done. The slide member 2 is guided by the three protrusions 3a and is slidable relative to the guide member 3 and the inclined plate 1 in the direction of inclination of the slope of the inclined plate 1 (in the direction of the arrow in the second figure).

A compression coil spring 11 is provided in each of the three grooves 28, one end of each compression coil spring 11 is respectively locked to the lower end of the slide member 2, and the other end is respectively locked to each set screw 10. are in contact. As a result, the slide member 2 is urged downward in the direction of inclination of the inclined plate 1 by the elastic force of each compression coil spring 11, and the screwing depth of each set screw 10 into the protrusion 3a is adjusted respectively. By doing so, the amount of compression and thus the elastic force of each compression coil spring 11 can be adjusted.

Three positioning bins 12a, 12b, and 12c are protruded from a predetermined portion of the upper surface of the rear end of the slide member 2 at intervals equal to the intervals of the three fixed members 4, and each positioning bin 12a, 12b , 12c pass through washers 13a, 13b, and 13c fixed to the slide member 2, respectively. And each washer 13a, 13b.

The thickness of 13c is equal to the height of the foot portions 26 (see especially FIG. 2) of the three inkjet recording heads A, B, and C to be sealed with resin.

As a result, each inkjet recording head A.

When the inkjet recording heads A, B, and C are respectively mounted at predetermined positions on the slide member 2, the respective feet 26 abut the upper surface of the slide member 2, while the rear lower surfaces of the inkjet recording heads A, B, and C are in contact with the washers 13a.

It comes into contact with the upper surfaces of 13b and 13c.

In this state, each inkjet recording head A, B, C
The respective positioning bins 12a, 12b, 12c are located at the rear end of the
The positioning bins 14e, 15e, 16e protruding from the slide member 2 abut the front ends of the inkjet recording heads A, B, and C, respectively, so that the inkjet recording heads A , B, and C are positioned in the front-back direction.

Similarly, each inkjet recording head A.

Positioning in the width direction of B and C is performed using four positioning bins 14a to 14d, 15a to 15d, and 16, respectively.
Performed by a to 16d. Each of the inkjet recording heads A, B, and C also has a respective presser plate spring 6a,
Since it is pressed downward by 6b and 6c, it does not float up.

With these configurations, each inkjet recording head A,
Since B and C are parallel to each other on the same straight line and are held parallel to the upper surface of the slide member 2, their discharge ports 2
2b (see FIG. 5) is held diagonally downward.

The above-mentioned positioning bins 12a, 12b, 12c, 14a
~14e etc., each inkjet recording head A, B,
A positioning means for positioning C on the slide member 2 is configured.

Above each inkjet recording head A, B, C, there are three dispensers 30 (injectors) for injecting resin 27 (see FIG. 5) into predetermined portions of each inkjet recording head A, B, C. Two dispensers (not shown) are provided. Inside each dispenser 30,
Liquidized resin 2, such as silicone resin or urethane resin
When the resin 27 is discharged into the atmosphere from the dispenser 30, the volatile components evaporate and harden.

Next, a method for resin sealing an inkjet recording head using the above-described resin sealing device for an inkjet recording head will be described with reference to FIGS. 4 and 5.

First, a top member 22 having an orifice plate 25 having a fine groove 22a and a discharge port 22b formed therein corresponding to the fine groove 22a is fixed to the heater board 24, and a frame portion surrounding the opening on the side of the orifice plate 25 is fixed. 23
Three inkjet recording heads A, B, and C are prepared by combining chip tanks (structures) 19 having the following characteristics.

The slide member 2 is pulled upward in the direction of inclination of the inclined plate 1 against the elastic force of the three compression coil springs 11, and in this state, the three inkjet recording heads A, B, and C are
When the inkjet recording heads A, B, and C are mounted on the predetermined portions on the slide member 2, the inkjet recording heads A, B, and C are positioned in the front-rear direction and the width direction. At this time, the pipe sections of each chip tank 19 enter holes (not shown) formed in the slide member 2, and do not interfere with the slide member 2. Then, when the slide member 2 is gradually released, the slide member 2 is urged downward in the direction of inclination of the inclined plate 1 by the three compression coil springs 11 and moves. As a result, the chip tanks 1 of each inkjet recording head A, B, and C are
9 are pressed downward by the respective ridge leaf springs 6a, 6b, and 6c, and in this state, the abutting members 5 abut on the front surfaces of the orifice plates 25 near the discharge ports 22b, respectively, and the front surfaces are pressed, respectively. . As a result, each inkjet recording head A.

B and C are fixed on the same straight line and are reliably held obliquely, while the gap between the back surface of each orifice plate 25 and the front surface 24a of the heater board becomes minute.

Next, each dispenser 30 is positioned in the opening surrounded by the frame 23 of the chip tank 19 of each of the inkjet recording heads A, B, and C. After the positioning is completed, the resin 27 in each dispenser 30 is poured into the injection port 3.
They are injected into the openings starting from 0a. Taking one inkjet recording head A as an example, it will be explained as follows.
The injected resin 27 enters the gap between the upper surface of the heater board 24 and the lower surface of the top member 22. Since the inkjet recording head A is held obliquely with the ejection ports 22b facing downward, the resin 2 that has entered the gap
7 flows toward the discharge port 22b by its own weight along the gap, and reaches the back surface of the orifice plate 25. The resin 27 that has reached the back surface of the orifice plate 25 further enters the fine gap between the back surface of the orifice plate 25 and the heater board front surface 24a due to its own weight. As the resin 27 flows as described above, the gap between the heater board 24 and the top member 22 is completely sealed by the resin 27, and deformation of the orifice plate 25 due to the sealing is also prevented.

Further, the resin 27 is injected to form the connections between the heater board 24 and the wires 20, the connections between the board 18 and the wires 20, the wires 20 themselves, and the connections between the ink inlet 28 and the chip tank 19. When the resin 27 is completely covered with the resin 27, the injection of the resin 27 is finished.

When the resin 27 is held as it is until it hardens, the gap between the heater board 24 and the top member 22, the connection between the heater hoard 24 and the wire 20, the connection between the board 18 and the wire 20, and the wire 20 itself and the connection part between the ink introduction port 28 and the chip tank 19 are made of resin 27.
sealed by. After the curing, the slide member 2 is pulled up and each inkjet recording head A, B, and C is removed from the slide member 2.

If the resin 27 enters the ink flow path 29, the ejection port 22b, or the ink introduction port 28, the resin 27 will clog the ink, making it impossible to eject the ink normally. Therefore, the resin 27 is
Although it gets into the gap between the top member 22 and the ink inlet 28 and the gap between the ink inlet 28 and the chip tank 19, it does not get into the ink flow path 29, the discharge port 22b, or the inside of the ink inlet 28. The viscosity is required. In addition, resin 27
Because it comes into direct contact with ink at the ink flow path 29 and the connection portion between the ink introduction port 28 and the chip tank 19, it is necessary to have properties that will not be denatured by the ink. Furthermore, if the coefficient of thermal expansion of the resin 27 and the coefficient of thermal expansion of the wire 20 are significantly different, the heater board 24 may
The thermal expansion coefficient of the resin 27 is equal to that of the wire 20 because tensile or compressive stress is applied to the wire 20 due to the heat of This is desirable.

The injection amount and injection pressure of the resin 27 when injecting the resin 27 should be set in advance to appropriate values so that the resin 27 does not enter the ink channel 29, the ejection port 22b, etc.

Further, the inclination angle of each inkjet recording head A, B, and C on the slide member 2 is not limited to 15°.

In the above embodiment, a separate dispenser is provided above each inkjet recording head, but the invention is not limited to this, and only one dispenser is provided,
The resin sealing may be performed by moving the single dispenser on the same straight line and sequentially positioning each inkjet recording head. In this case, the positioning of the dispenser becomes easy, and the work efficiency of sealing a plurality of inkjet recording heads with resin using one dispenser is improved.

Further, the sealing device is not limited to a sealing device that can mount three inkjet recording heads, and the number of mountable inkjet recording heads may be single or other plurality.

Further, a plate spring may be used as the first biasing means, and the sliding member may be biased by the plate spring, and it is not necessary to provide a presser plate spring as the second biasing means. At this time, the resin sealing method does not press the inkjet recording head from above.

The present invention is not limited to providing a separate fixing member and abutting member for each inkjet recording head, and it is also possible to provide only one fixing member and one abutting member for each of a plurality of recording heads.

[Effects of the Invention] Since the present invention is configured as described above, it produces the following effects.

According to the invention described in claim 1, the inkjet recording head is held obliquely with the ejection ports facing downward, and the resin is injected into the area surrounded by the frame of the structure, thereby forming the base member and the top member. The gap formed in the contact surface can be easily (and reliably) sealed with the resin, and ink can be prevented from flowing into the gap.

In addition, since the resin is sealed with a fine gap between the back surface of the orifice plate and the base shot surface by pressing, the resin sealing becomes reliable and the sealing accuracy improves, and the orifice plate As a result, the positional accuracy of the orifice plate with respect to the base member is improved, and an inkjet recording head with uniform dimensions can be provided.

In addition to the above-mentioned effects, the invention according to claim 2 has the advantage that, especially when sealing a plurality of inkjet recording heads with resin using one injector, the injector is moved on the same straight line to seal each inkjet recording head. Since the positioning can be performed easily, the working efficiency of resin sealing can be improved.

In addition to the above-mentioned effects, the invention according to claim 3 can prevent the inkjet recording head from lifting up due to the inkjet recording head being pressed by the first urging means when sealing with resin. As a result, sealing accuracy is further improved.

The invention according to claim 4 is suitable for carrying out the method according to claim 1, because the front surface of the first orifice plate abuts against and is pressed by the abutting member simply by mounting the inkjet recording head on the slide member. Therefore, resin sealing can be easily and reliably performed.

The invention according to claim 5 is suitable for the method according to claim 2.

In addition to the effects of claims 4 and 5, the invention set forth in claim 6 has the advantage that, simply by mounting the inkjet recording head on the slide member, the inkjet recording head is pressed downward and fixed to the slide member. Suitable for carrying out the method described in item 3.

[Brief explanation of the drawing]

FIG. 1 is a schematic oblique top view of an example of an apparatus used to carry out the resin sealing method for an inkjet recording head of the present invention;
Fig. 2 is a cross-sectional view of most of Fig. 1 taken along the line x-X, Fig. 3(a) is a side view of the left main part of Fig.
b) is a side view of the right main part of FIG. 1, FIG. 4 is a detailed top view of the inkjet recording head A shown in FIGS. 1 and 2, and FIG. 5 is a cross section taken along the line Y-Y in FIG. 4. FIG. 6 is a cross-sectional view of a conventional inkjet recording head taken along a vertical cross-sectional line. A, B, C... Inkjet recording head, 1...
Inclined plate, 2...Slide member, 2a...
・Groove, 3...Guide member, 3a...
Projection portion, 3b...Screw hole, 4...Fixing member, 5...Abutment member, 6a, 6b, 6c
・=Press plate spring, 7...Free end, 8...Screw, 9...
Screw, 1o...Set screw, 11...
・Compression coil spring, 12a, 12b, 12cm...Positioning pin, 13
a, 13b, 13cm... washer, 14a ~ 14e
, l 5a - 15e. 16a to 16e... Positioning bin, 17... Base plate, 17a... Base plate front, 18... Board, 19... Chip tank, 20... Wire, 21... Presser plate spring, 21a ...Locking part, 22...Top member, 22
a... Fine groove, 22b... Discharge port, 23...
・Frame portion, 24... Heater hoard, 24a
... Heater board front, 25 ... Orifice plate, 26 ... Foot section, 27 ... Resin, 28 ...
...Ink inlet, 29...Ink channel, 30.
...Dispenser, 30a...Inlet. Patent applicant Canon Co., Ltd. agent Patent attorney Tadashi Wakabayashi

Claims (1)

[Scope of Claims] 1. A top member having a fine groove and an orifice plate formed with an ejection port corresponding to the fine groove is fixed to a base member fixed on a base plate to form an ink flow path;
An inkjet recording head is assembled on the base plate, and the inkjet recording head is provided with a structure having a frame surrounding the opening on the orifice plate side, and the inkjet recording head is held diagonally with the ejection opening facing downward. A method for sealing an inkjet recording head with resin, comprising: pressing the front surface of the orifice plate, and injecting resin into a region surrounded by the frame in the pressed state. 2. A top member having a fine groove and an orifice plate formed with an ejection port corresponding to the fine groove is fixed to the base member fixed on the base plate to form an ink flow path;
A plurality of inkjet recording heads each having a structure having a frame surrounding an opening on the orifice plate side are assembled on the base plate, and the plurality of inkjet recording heads are arranged in parallel on the same straight line. While holding each of the ejection ports diagonally downward, press the front surface of the orifice plate of each inkjet recording head, and in the pressed state, press the inkjet recording head to the area surrounded by the frame of each inkjet recording head. A resin sealing method for an inkjet recording head characterized by injecting each resin. 3. Claim 1: When pressing the front surface of the orifice plate of the inkjet recording head, the structure is pressed from above.
Or the resin sealing method for an inkjet recording head according to 2. 4. An ink flow path is formed by fixing to a base having a slope and a top member having a fine groove and an orifice plate formed with an ejection port corresponding to the fine groove to the base member fixed on the base plate. , an inkjet recording head having a structure having a frame surrounding the opening on the orifice plate side can be mounted on the base plate, and a slide member provided on the slope of the base so as to be movable in the direction of the slope. a positioning means for positioning the inkjet recording head on the slide member; a first urging means for urging the slide member downward in the direction of inclination of the slope of the base; and the first urging means. an abutment member that abuts against the front surface of the orifice plate of the inkjet recording head on a slide member biased by the inkjet recording head; and an injector for injecting resin into a region surrounded by the frame of the inkjet recording head. A resin sealing device for an inkjet recording head characterized by: 5. An ink flow path is formed by fixing to a base having a slope and a top member having a fine groove and an orifice plate formed with an ejection port corresponding to the fine groove to the base member fixed on the base plate. , a plurality of inkjet recording heads each having a structure having a frame surrounding the opening on the orifice plate side can be mounted on the base plate, and the inkjet recording head is provided on the slope of the base so as to be movable in the direction of the slope. a slide member; positioning means for positioning the plurality of inkjet recording heads on the slide member so that they are aligned on the same straight line; and a positioning means for urging the slide member downward in the direction of inclination of the slope of the base. a first biasing means; an abutment member that abuts against the front surface of the first orifice plate of each inkjet recording head on the slide member biased by the first biasing means; 1. A resin sealing device for an inkjet recording head, comprising: a syringe for injecting resin into a portion of the inkjet recording head. 6. The resin sealing device for an inkjet recording head according to claim 4 or 5, further comprising a second urging means for urging the structure of the inkjet recording head downward.