JPH06316080A - Device for assemblying ink jet head - Google Patents

Abstract

PURPOSE:To slide a top plate smoothly on one upper face or a heater board and sticking components accurately by attaching a projection and the like for heating the side face of an orifice plate to a spring component pressing the front face of the orifice plate in front of the top plate. CONSTITUTION:A top plate 104 is moved to the position right above a heater board 102 and retained temporarily thereon by a mounting mechanism 26, and then the top plate 104 is released and dropped onto the heater board 102. A positioning mechanism 27 for positioning the top plate 104 accurately is disposed on a part of the mounting mechanism 26. An X axis positioning section 26m as a spring component provided with a hitting section for positioning along the disposing direction of a jet hole and a jet heater corresponding mutually to conform each other in the X axial direction of the top plate 104 is disposed on the positioning mechanism 27. Also XY axes positioning sections 27A and 27B are disposed in a manner the rear face of an orifice plate 108 is brought into contact with the front end face of the heater board 102 in the Y axial direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet head assembling apparatus for adhering a heater board having a row of heaters of an ink jet head for printing by a bubble jet method and a top plate having nozzles while adjusting their positions. .

[0002]

2. Description of the Related Art In recent years, when ejecting ink to print on paper, a print head that heats ink to form bubbles and prints by a so-called bubble jet method is advantageous in improving printing accuracy. Therefore, it has been developed and put into practical use.

In an assembling apparatus for assembling such a print head of the bubble jet system, a heater for heating ink and an ejector for ejecting bubble-like ink heated and boiled by the heater toward a paper sheet. The outlet must be accurately positioned on the order of microns. For example, the printing accuracy is about 360 dpi (dotts
4.5mm to achieve high precision of per inch)
In this range, 64 discharge holes must be arranged at equal intervals, and the arrangement pitch at this time is as fine as about 70 microns.

Here, the formation of the discharge ports at such a minute interval is performed on the front surface of the grooved top plate (this is simply referred to as a top plate) by using an ultra-precision processing device such as a laser processing machine. It is possible to form a discharge port on a certain orifice plate with a high precision that is acceptable, and when forming a heater, by using an ultra-precision etching technique, similarly, It is possible to form a row of heaters on a heater board with high accuracy.

When the heater board and the top plate are attached to each other, it is necessary to accurately align the positions of the nozzles on the top plate having the rows of the heaters and the rows of the discharge ports having the pitches corresponding to the rows of the heaters, that is, the rows of the nozzles. Therefore, the position of the heater,
The present applicant has proposed a method of measuring the nozzle position of the top plate by a method such as image processing, and adhering the nozzle while adjusting the position of the top plate with respect to the heater board (Japanese Patent Laid-Open No. 4-171).
131). According to this, in order to align the top plate on the heater board, the member used to suck and convey the top plate is applied to the side of the circular protrusion on the top plate to move the top plate on the heater board. Let's match both. This conventional technique will be described later.

Here, the background of the prior art will be described with reference to FIGS. First, a description will be given of the print head nozzle 100, which is an assembly target of the inkjet head assembly apparatus, and later, the assembly apparatus 10 of FIG. 6 will be described with reference to FIGS.

(Description of Head Nozzle 100) First, the head nozzle 100 assembled by the assembling apparatus 10.
And an inkjet cartridge 200 equipped with this
The schematic configuration of the above will be described with reference to FIGS.

This ink jet cartridge 200
As shown in FIG. 3, it is roughly configured by an ink tank 302 and a head nozzle 100. Further, as shown in FIGS. 4 and 5, the head nozzle 100 has a heater board 102 on which a discharge heater 112 for heating ink is formed.
And a common liquid chamber that is positioned on the heater board 102 and divides each of the plurality of ink flow paths, a common liquid chamber that distributes ink to each ink flow path, and an ink that is supplied to the common liquid chamber. It is composed of a top plate 104 having a cylindrical ink receiving port 118 and the like, and an orifice plate 108 integrally provided on the front surface of the top plate 104 and having a plurality of ejection ports 106 corresponding to respective ink flow paths. There is.

In this embodiment, the ejection ports 106 are arranged at equal intervals over a length of about 4.5 mm, and the head nozzles 1 are provided with this interval.
The print density of 00 is about 360 dpi (dotts per inch)
It is highly accurate.

(Explanation of Assembly Device 10) Next, the assembly device 10 of the head nozzle 100, that is, the top plate 104, which is used in the present invention and also used in the prior art, is replaced with the heater board 10.
The structure of the assembling apparatus 10 and the assembling method, which are the basis for the assembling in the state of being accurately positioned on the 2 and the assembling method, will be described in detail with reference to FIGS.

<Description of Overall Structure of Assembly Device 10> As shown in FIG. 6, this assembly device 10 has a surface plate 12 whose mounting posture is accurately positioned in a horizontal state on a base (not shown).
Is equipped with. The assembling device 10 is mounted on the surface plate 12.
The first position adjusting mechanism 14 that regulates the mounting position of the top plate 104 that has the orifice plate 108 in advance, which is one of the components of the head nozzle 100 that is assembled in 1. A second position adjusting mechanism 16 that regulates the mounting position of the heater board 102, which is a component, is fixed to the upper surface of the distal end portion of the base member 208 in a precisely positioned state in advance. Has been.

The first position adjusting mechanism 14 includes a surface plate 12
A first x-axis stage 18 that is directly mounted on the first surface and is movable in the x-axis direction (direction orthogonal to the paper surface) with respect to the surface plate 12, and is mounted on the first x-axis stage 18. The first z-axis stage 20 is movable along the z-axis direction (vertical direction in the figure) with respect to the first x-axis stage 18, and is mounted on the first z-axis stage 20. , A first y-axis stage 22 movable along the y-axis direction (left and right direction in the drawing) with respect to the first z-axis stage 20, and a spacer 24 on the first y-axis stage 22. A base end portion is mounted via the mounting mechanism 26, and the top plate 104 is detachably attached to the front end portion, and the mounting mechanism 2
6 and a positioning mechanism 27 for performing positioning of the top plate 104 placed on the heater board 102 with respect to the heater board 102. The configurations of the attachment mechanism 26 and the positioning mechanism 27 will be described later in detail.

On the other hand, the second position adjusting mechanism 16 includes the surface plate 1
A second x-axis stage 28 that is directly mounted on the second unit adjacent to the first position adjusting mechanism 14 and is movable in the x-axis direction with respect to the surface plate 12; Two
Mounted on the x-axis stage 28 of the second movable second x-axis stage 28 along the z-axis direction described above.
Z-axis stage 30 and a second y-axis stage 32 that is mounted on the second z-axis stage 30 and is movable with respect to the second z-axis stage 30 in the y-axis direction described above.
And a base member 208 disposed on the second y-axis stage 32 and to which the heater board 102 is attached and fixed.
And a position fixing mechanism 33 for fixing the position fixing device 33 to the second y-axis stage 32 in an accurately positioned state.
And a bonding force generation mechanism 34 for bonding the heater 04 to the heater board 102 with a predetermined bonding force.

Here, each axis stage 18, 20, 22;
Although not shown, 28, 30, and 32 are respectively provided with drive motors, and these drive motors control the overall control via the corresponding drivers 36a, 36b, 36c, 36d, 36e, and 36f. It is connected to the unit 38. Under the control of the control unit 38, the drive motors of the first position adjusting mechanism 14 are arranged such that the top plate 104 is located at a predetermined position above the heater board 102 and the second position. In the adjusting mechanism 16, the heater board 102 is controlled so that the heater board 102 is positioned at a predetermined position with respect to the surface plate 12, respectively.

On the other hand, the control unit 38 includes a top board 10.
Although it is necessary to accurately detect the position of the top plate 4 in order to accurately position it, the first position detection mechanism 40 that accurately detects the position of the top plate 104 based on the image of the top plate 104.
However, it is necessary to accurately detect the position of the heater board 102 in order to accurately position the heater board 102. However, a second position detection mechanism that accurately detects the position of the heater board 102 based on an image captured by the heater board 102. 42 are both connected to the control unit 38 via the image processing device 44.

Here, the first position detecting mechanism 40 is
The first objective lens 40a and the first objective lens 40a are arranged in front of the orifice plate 108 of the grooved top plate 104 that is accurately gripped at the tip of the attachment mechanism 26, which will be described later in detail. First holding lens 40a
Objective lens holder 40b and first epi-illumination device 40
c and the first light source 4 for this first epi-illuminator 40c
0d, a first optical system 40e that determines the in-focus state, a first lens barrel 40f that houses these optical devices, and an image of the orifice plate 108 that is observed through the first objective lens 40a. It is composed of a first ITV camera 40g to be projected.

The image information of the first ITV camera 40g is sent to the above-mentioned image processing device 44 via the first signal converter 46. The first focus determination optical system 40e is connected to the control unit 38 via the first focus state detector 48. Here, the first position detection mechanism 40 is attached and fixed on the above-mentioned surface plate 12 via a first support post (not shown).

The second position detecting mechanism 42 described above is also used.
Is disposed above the heater board 102 accurately placed on the second y-axis stage 32 by a second positioning mechanism 33, which will be described in detail later, and includes a second objective lens 42a, A second objective lens holder 42b that holds the second objective lens 42a, a second epi-illumination device 42c, a second light source 42d for the second epi-illumination device 42c, and a focus state are determined. Second optical system 42e
And a second lens barrel 42f for housing these optical devices,
The second ITV camera 42g projects an image of the heater board 102 observed through the second objective lens 42a.

The image information of the second ITV camera 42g is sent to the above-mentioned image processing device 44 via the second signal converter 50. The second focus determination optical system 42e is connected to the control unit 38 via the second focus state detector 52. Here, the second position detection mechanism 42 is attached and fixed on the above-described surface plate 12 via a second support (not shown).

Here, in this example, the optical axis of the first objective lens 40a in the first position detecting mechanism 40 and the optical axis of the second objective lens 42a in the second position detecting mechanism 42 are formed. At the intersecting position, the assembly work position α
Is specified. At the assembly work position α, it is preferable that the two optical axes described above intersect correctly, but even if they do not actually intersect, there is substantially no problem by executing the calibration operation. It is a thing.

Actually, it is extremely difficult to align the two optical axes so that the two optical axes are correctly crossed. As a premise, the deviation amount Δx is calculated by a calibration operation, and the calculated deviation amount Δx is calculated by the first and second position adjusting mechanisms 1.
By numerically taking into account the position adjustment operations of Nos. 4 and 16, this deviation amount Δx can be substantially ignored.

On the other hand, the assembling apparatus 10 has a discharge port 106.
The heater board 102 and the top plate 104 after the corresponding discharge heaters 112 have been matched with each other are adhered to each other through an ultraviolet curable adhesive so that the relative positional relationship between the two does not change. Therefore, in other words, a temporary attachment mechanism 54 is provided as an adhesion device according to this technique in order to temporarily fix the two. The temporary attachment mechanism 54 has an ultraviolet light source 58 that emits ultraviolet light, and a base end portion connected to the ultraviolet light source 58, and a pair of distal end portions arranged at the distal end of the attachment mechanism 26 as shown in FIG. 7. Suction member 26
The first light guides 5 attached to the respective side surfaces of the b and 26c and embedded in the suction members 26b and 26c.
It is composed of the second light guide 56 connected to the No. 7.

Here, the second light guide 56 is
It is flexible and is deformable. The ultraviolet light source 58 and the first light guide 57 are constantly connected to each other in response to the movement of the attachment mechanism 26 based on the drive of the first position adjusting mechanism 14. It is designed to connect. Further, as shown in FIG. 7, the adhesives 80a and 80b are previously attached on the heater board 102.

Then, the image processing device 44 described above uses the orifice plate based on the image information obtained from the first and second ITV cameras 40g and 42g through the first and second signal converters 46 and 50. It is configured to calculate the formation position of the ejection port 106 formed in 108 and the arrangement position of the ejection heater 112 arranged on the heater board 102, and send the calculation result to the control unit 38. . Further, the image processing device 44 includes an ITV monitor 64 for confirming a measurement image, a keyboard 62 for inputting a device adjustment program and data, and a CRT monitor 6 for displaying data.
6 is connected and the man-machine interface is established.

Further, the above-mentioned control unit 38 is the first
And the second focus state detectors 48 and 52, and the data input from the image processing device 44 is calculated by a predetermined algorithm, and based on the calculation result, via the respective stage drivers 36a to 36f, The corresponding axis stages 18, 20, 22, 28, 30, 32 are appropriately driven and controlled, the relative positions of the top plate 104 and the heater board 102 are adjusted, and the discharge port 106 and the corresponding discharge heater 112 are mutually adjusted. So that they match, and after this match,
The temporary attachment mechanism 54 is activated, the ultraviolet light source 58 is activated, and a control operation for curing the adhesive agent interposed between the heater board 102 and the top plate 104 is executed.

The control unit 38 includes an operation panel 66 for operating the assembling apparatus 10, a keyboard 68 for setting / changing an operation program, a CRT monitor 70 for displaying data, and a printer for recording data. 72, a data disk 74 for storing data, and a program disk 76 storing an operation program are connected, and a man-machine interface is established.

<Description of Attachment Mechanism 26> Next, the configuration of the attachment mechanism 26 to which the top plate 104 is attached will be described in detail with reference to FIGS. 7 and 8.

The mounting mechanism 26 includes a main body 26a which is mounted and fixed on the above-mentioned first y-axis stage 22 via a spacer 24. A pair of suction members 26b and 26c are attached to the front end of the main body 26a in parallel with each other at predetermined intervals and projecting forward (along the y-axis direction).

Suction holes 26d and 26e are opened on the lower surfaces of the suction members 26b and 26c, respectively. The suction holes 26d and 26e correspond to the suction members 26b and 2, respectively.
The communication pipes 26f and 26g penetrating through the inside of 6c are respectively defined by the end openings of the communication pipes 26f and 26g.
It is selectively connected to a negative pressure generating mechanism and a positive pressure generating mechanism (not shown) via respective switching valves (not shown).

Then, when the switching valve is connected to the negative pressure generating mechanism, the top plate 104 is sucked by the suction members 26b, 26 via the suction force generated in the suction holes 26d, 26e.
It is designed to be suction-held on the lower surface of c. On the other hand, in the state where the switching valve is connected to the positive pressure generating mechanism, the air ejected (reversely ejected) from these suction holes 26d and 26e is sucked and held by the suction members 26b and 26c until now. The plate 104 forces the suction members 26b, 2
It will be pulled downward from 6c.

As described above, the pair of suction members 26b, 2
In the state where the top plate 104 is suction-held on the lower surface of 6c, the cylindrical ink receiving port 118 of the top plate 104 is just the suction member 26.
The posture in which the orifice plate 108 faces the front is set so as to enter between b and 26c.

On the other hand, in each suction member 26b, 26c,
As shown in FIG. 7, the adhesive 80a, 8
Open toward the attachment position of 0b, the other end is open to the side surface,
A first light guide 57 that guides the ultraviolet light irradiated to the other end opening through the second light guide 56 to the one end opening is embedded. That is, the first light guide 57 is connected to the second light guide 56 at the other end opening. The light guides 56 and 57 form a temporary attachment mechanism 54 as an adhesion device.

[0033]

2. Description of the Related Art With the background of the above technology, a conventional technology to be compared with the present invention will be described with reference to FIG.

First, in the top plate conveying section 26A composed of the suction member 26b and the suction member 26c, the suction member 26b on the front side in the drawing is defined as the reference side, which is the reference side in this example. The side suction member 26b is fixed to the main body 26a. On the other hand, the suction member 26c on the other side in the drawing is x
It is movably supported along the axial direction. In addition, in the top plate transport unit 26A, the pair of suction members 26b, 2
The end faces of 6c that face each other, that is, the end faces that face each other where the space where the cylindrical ink receiving port 118 is inserted are defined, are defined as the position regulating faces, respectively.

The movable suction member 26c has a continuous member 2 extending to the middle of the main body 26a at the rear portion thereof.
6h are integrally connected. On the other hand, this main body 26a
Includes a guide shaft 26i extending along the x-axis direction.
Is attached. The connecting member 26h is connected to the guide shaft 26i via the slide guide 26j.
Is movably supported along the x-axis direction.

On the other hand, a first drive cylinder (not shown) is mounted on the main body 26a so as to face the intermediate portion of the connecting member 26h. The piston rod of the first drive cylinder projects so as to be driven back and forth along the x-axis direction, and the tip end of the piston rod is connected to the connecting member 26 described above.
connected to h.

In this way, the first drive cylinder reciprocally drives the corresponding piston rod at a high speed, so that the suction member 26c is continuously installed through the continuous member 26h.
Is reciprocally driven at high speed along the x-axis direction, that is, vibrated.

Next, the xy axis positioning portion 27A including the connecting member 26r and the connecting piece 26p, the connecting member 26s, and the connecting piece 2 are formed.
The xy-axis positioning portion 27B including 9q includes the top plate 10 placed on the heater board 102 as shown in FIG.
In the state where the spring members 26m and 26n for pressing the front surface of the orifice plate 108 of No. 4 are lowered from each other,
Prepared in parallel with a space. The spring members 26m and 26n that press the front surfaces of the suction members 26b and 26n
It is provided so as to correspond to each of c and is arranged so as to be located further in front of the corresponding end face for position regulation. Further, the spring members 26m and 26n for pressing these front faces have connecting pieces 26p and 26q extending further forward than their outer ends along the upper edges of the front end faces of the corresponding suction members 26b and 26c, respectively. The respective upper ends are connected to the inner ends. The outer ends of these connecting pieces 26p and 26q are
It is attached to the front ends of the connecting members 26r and 26s extending along the y-axis direction.

On the other hand, second drive cylinders 26t extending in the y-axis direction are provided at both ends of the main body 26a. The respective piston rods 26u of the second drive cylinders 26t project so as to be driven back and forth along the y-axis direction, and their tips are respectively connected to the rear end portions of the above-mentioned connecting members 26r, 26s. .

In this way, the second drive cylinder 2
6t reciprocally drives the corresponding piston rod 26u at high speed, so that the spring members 26m and 26n for pressing the front faces connected via the connecting members 26r and 26s and the connecting pieces 26p and 26q respectively move in the y-axis direction. The orifice plate 1 is reciprocally driven at high speed, that is, vibrated,
The top plate 104 is positioned along the y-axis direction so that 08 is in close contact with the front end surface of the heater board 102.

Using the above apparatus, the top plate set at a predetermined position directly above the heater board 102 is released from the mounting mechanism 26 and dropped onto the heater board 102. At this dropped position, the top plate is moved in the x-axis direction. On the basis of the drive source driven in accordance with the above, one of the suction members 26b and 26c, which is the top plate transport portion 26A of the positioning mechanism 27, pushes the circular protrusion of the top plate and moves the top plate along the x-axis with respect to the heater board 102. Correctly define the position. At this time, the spring members 26m and 26n that press the front surface of the orifice plate 108 in front of the top plate are also connected to the xy axis positioning portions 27A and xy.
Since the shaft positioning part 27B moves together with the top plate conveying part 26A, it also moves with the orifice plate 108 which is integral with the top plate, but there is no transmission of force between the spring member and the orifice plate in the x-axis direction.

Further, the xy-axis positioning section 27A and the xy-axis positioning section 27B based on the driving source which drives in the y-axis direction.
By the operation of, through the spring members 26m and 26n, the top plate with respect to the heater board 102, and the rear surface of the orifice plate 108 comes into contact with the front surface of the heater board, whereby the position along the y axis is correctly defined.

[0043]

However, according to the above-mentioned prior art, the portion where the top plate conveying portion 26A, which is a member for determining the position along the x-axis, pushes the top plate is the circular protrusion of the top plate. Since the top of the plate is pushed, the top plate does not slip on the heater board smoothly and may be exposed. In addition, if the balance of the spring strength of the front surface pressing spring member that presses the front surface of the top plate is poor, the top plate will protrude diagonally forward, and the bonding accuracy will deteriorate. Further, it is necessary to make the spring strength of the spring member appropriate, but the appropriate requirements are strict.

Particularly, it is difficult to maintain the balance of the spring strength of the front pressing member, and since the maintenance time for maintaining this balance and adjusting the spring strength becomes long, the apparatus There was also a problem that the utilization rate of the.

[0045]

According to the present invention, the member for pushing the top plate is provided with the front face pressing spring which holds the front face of the orifice plate in front of the top plate, so that not only in the y-axis direction but also in the x direction. The driving force for the axial movement is also applied to the top plate so that the top plate smoothly slides on the heater board.

Therefore, in the ink jet head assembling apparatus for adhering the heater and the nozzle while adjusting the positions thereof, the top plate is moved on the heater board in a plane for position adjustment. In the spring member that presses the orifice plate in front of the to the front end surface of the heater board,
In addition to the pressing direction, means for directly applying a driving force applied in a direction orthogonal to the pressing direction is provided to the orifice plate, and the driving force can be transmitted to the top plate via the orifice plate.

As the means, spring members 26m and 26n are used.
One or both of the spring members 26m and 26n may be provided with a protrusion capable of pushing the side face of the orifice plate in front of the top plate, or one or both of the spring members 26m and 26n may be provided with a protrusion that fits into a recess provided in the front face of the orifice plate. To be installed in.

[0048]

In the conventional technique for adjusting the position of the top plate on the heater board, the orifice plate and the spring member that presses it against the heater board both move in the x direction. However, since another member was transmitting the driving force by pushing the upper part of the top plate to the top plate, the movement of the top plate was not smooth, but the present invention uses the spring member itself to make the orifice. Since the driving force in the x direction is applied to the top plate via the plate, the top plate moves smoothly.

[0049]

Embodiments of the present invention will be described with reference to FIGS.

The mounting mechanism 26 includes the heater board 102.
The top plate 104 is moved to a predetermined position directly above the table, and is held at that position at 1 o'clock, and the top plate 104 is attached to the heater board 102.
It can be released and dropped. Then, a positioning mechanism 27 for accurately positioning the top plate 104 on the heater board 102 is provided by utilizing a part of the attachment mechanism 26.

The positioning mechanism 27 positions the top plate 104 on the heater board 102 in the x-axis direction, that is, along the arrangement direction of the discharge ports 106 and the discharge heater 112 corresponding to each other. The x-axis positioning portion 26m, which is an improved spring member, and the y-axis direction,
That is, xy is positioned so that the rear surface of the orifice plate 108 is in close contact with the front end surface of the heater board 102.
It is provided with shaft positioning portions 27A and 27B.

The x-axis positioning portion 26m is also a spring member that presses the front surface of the orifice plate, but this spring member is provided with an abutting portion as shown in FIG. 1 that can be applied to the side surface of the orifice plate of the top plate. It is provided. When the xy-axis positioning portion 27A moves in the x-axis direction, this abutting portion pushes the side surface of the orifice plate, and the top plate integrated with the orifice plate is positioned along the x-axis direction. In the case of FIG. 1, since the abutting portion is not provided in 26n, the actual driving can transmit the driving force only in one movement in the x direction, but this is often sufficient.

In another means shown in FIG. 2,
Protrusions are provided on the spring members 26m and 26n, respectively, so that the spring members 26m and 26n are fitted into the recesses provided on the front surface of the orifice plate 108. Thus, the driving force in the x-axis direction is transmitted to the top plate through the spring member and the orifice plate. In this case, the driving can be performed in both the x direction.

A pair of suction members 26 of the attachment mechanism 26
The top plate 104 sucked and held by b and 26c is moved to a predetermined position above the heater board 102, and the first position adjusting mechanism 1
4 is moved based on the drive control of 4 and the suction is released, the top plate 104 drops onto the heater board 102, and the top plate 104 is moved by the operation of the xy axis positioning portions 27A and 27B at the dropped position. , Heater board 102
The position along the x-axis with respect to
The position 4 along the y-axis with respect to the heater board 102 is defined by the operation of the xy-axis positioning portions 27A and 27B as in the conventional technique.

[0055]

As described above, by providing the spring member for pressing the front surface of the orifice plate in front of the top plate with the projection for abutting the side surface of the orifice plate, the side surface of the orifice plate is pressed and the top plate x By positioning along the axis, that is, by using the front pressing spring that presses the front surface of the top plate as the direct member that presses the top plate, the top plate can smoothly slide on the heater board. The plate does not protrude diagonally to the front and the top plate does not protrude forward with a slight weakness than the predetermined strength of the spring of the spring member, and the top plate and the heater board can be accurately attached. The maintenance time is shortened and the production efficiency is improved.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing a structure of a top plate, an orifice plate, a heater board, a top plate attachment mechanism, and a positioning mechanism of a spring member according to one embodiment of the present invention.

FIG. 2 is a perspective view schematically showing only a top plate portion together with a top plate and an orifice plate of a spring member of another embodiment of the present invention.

FIG. 3 is a perspective view of an inkjet cartridge incorporating a head nozzle.

FIG. 4 is a perspective view showing a combination of a top plate having an orifice plate, which is an assembly object of the present invention, and a heater board.

FIG. 5 is a top view showing the configuration of a heater board.

FIG. 6 is a diagram schematically showing the configuration of an example of an assembling apparatus that combines a top plate and a heater board.

FIG. 7 is an exploded perspective view illustrating a part of the suction member of the top plate attachment mechanism and a temporary attachment mechanism of the top plate and the heater board.

FIG. 8 is a perspective view schematically showing configurations of a top plate mounting mechanism and a positioning mechanism in a conventional example.

[Explanation of Codes] 10 Assembly Device 12 Surface Plate 14 First Position Adjusting Mechanism 16 Second Position Adjusting Mechanism 26 Attachment Mechanism 26A Top Plate Conveying Section 26b 26c Suction Member 26m 26n Spring Member 27A 27B xy Axis Positioning Section 38 Control Unit 40 First Position Detection Mechanism 42 Second Position Detection Mechanism 80a 80b Adhesive 100 Head Nozzle 102 Heater Board 104 Top Plate 106 Discharge Port 108 Orifice Plate 110 Substrate 112 Discharge Heater 114 Electrical Wiring 118 Ink Receiving Port 120a 120b Recess of Orifice Plate 200 inkjet cartridge 302 ink tank

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Imanaka 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (3)

[Claims] 1. A heater board having a row of heaters for heating and foaming ink, and a row of nozzles having a pitch matched to the row of the heaters, and a flat plane at the front edge of the heater board. In an apparatus for assembling an ink jet head, which attaches a top plate having an orifice plate in contact with the front face while adjusting the positions of the heater and the nozzle,
In order to adjust the position of the top plate on the heater board in a plane, in order to move it in a plane, the orifice plate in front of the top plate is pressed against the front end surface of the heater board to the spring member, in addition to this pressing direction, it is orthogonal to this. An apparatus for assembling an ink jet head, characterized in that means for applying a driving force applied in a direction to the orifice plate is provided, and means for transmitting the driving force to the top plate via the orifice plate. 2. The ink jet head assembling apparatus according to claim 1, wherein the spring member has a protrusion that abuts against a side surface of the orifice plate in front of the top plate. 3. The apparatus for assembling an ink jet head according to claim 1, wherein the spring member has a protrusion that can be fitted in a concave portion of the orifice plate in front of the top plate.