JP3234704B2 - Ink jet device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet apparatus.

[0002]

2. Description of the Related Art The non-impact type printing apparatus which has been replacing the conventional impact type printing apparatus and is now expanding its market greatly is the simplest in principle and has a multi-gradation and color printing. For example, an ink-jet type printing apparatus can be used. Above all, a drop that ejects only ink drops used for printing
The on-demand type is rapidly spreading due to its good injection efficiency and low running cost.

The Kaiser type disclosed in Japanese Patent Publication No. 53-12138 as a drop-on-demand type,
Alternatively, a thermal jet type disclosed in Japanese Patent Publication No. 61-59914 is a typical method.
Among them, the former is difficult to miniaturize, and the latter requires a heat resistance of the ink in order to apply high heat to the ink, and each has a very difficult problem.

A new method for simultaneously solving the above-mentioned defects has been proposed in Japanese Patent Application Laid-Open No. 63-247051.
JP-A-63-252750 and JP-A-Hei 2
This is a shear mode type using piezoelectric ceramics disclosed in JP-A-150355.

FIG. 8 is a sectional view of an ink ejecting apparatus.
Thus, the configuration of the conventional example will be specifically described. A plurality of grooves 15 and side walls 11 separating the grooves 15, and an arrow 5
By joining the piezoelectric ceramic plate 2 that has been polarized in the direction shown in FIG. 3 and the cover plate 3 made of a ceramic material via a joining layer 4 made of an epoxy-based adhesive or the like, the grooves 15 are formed in the horizontal direction. A plurality of ink liquid chambers 12 having an interval are formed. The ink liquid chamber 12 has an elongated shape with a rectangular cross section, and the side wall 11 extends over the entire length of the ink liquid chamber 12. Electrodes 13 for applying a driving voltage are formed on both surfaces from the upper portion of the side wall 11 near the adhesive layer 4 to the center of the side wall 11. All the ink liquid chambers 12 are filled with ink.

Next, FIG. 9 shows a cross-sectional view of an ink ejecting apparatus.
The operation of the conventional example will now be described. In the ink ejecting apparatus, for example, when the ink liquid chamber 12d is selected according to desired print data, a positive drive voltage is applied to the electrodes 13g and 13h, and the electrodes 13f and 13i are grounded. Thus, a driving electric field in the direction of arrow 14c acts on the side wall 11c, and a driving electric field in the direction of arrow 14d acts on the side wall 11d. At this time, since the driving electric field directions 14c and 14d are orthogonal to the polarization direction 5, the side walls 11c and 11d
The ink is deformed outward from the ink liquid chamber 12d by the piezoelectric sliding effect. Due to this deformation, the volume of the ink liquid chamber 12d increases, the ink pressure in the ink liquid chamber 12d decreases, and the ink supply port 21 (FIG. 10) is connected to the manifold 22 (FIG. 1).
0), the ink is supplied into the ink liquid chamber 12d. When the application of the driving voltage is stopped, the side walls 11c and 11d return to the positions before deformation (see FIG. 8), so that the ink pressure in the ink liquid chamber 12d rapidly increases, and a pressure wave is generated, and the ink liquid is generated. Ink droplets are ejected from a nozzle 32 (FIG. 10) communicating with the chamber 12d.

However, the above operation is only a basic operation of the conventional example, and when embodied as a product, a driving voltage is first applied in a direction of decreasing the volume, and the ink liquid chamber 12d is first applied.
In some cases, the application of the driving voltage is stopped after the ink droplets are ejected from the nozzle, and the ink is supplied in the original state.

In the conventional example, since ink droplets cannot be simultaneously ejected from two nozzles communicating with two adjacent ink liquid chambers, for example, the nozzles 32 ( After the ink droplets are ejected from FIG. 10), the ink droplets are ejected from the nozzles 32 (FIG. 10) communicating with the even-numbered ink liquid chambers 12, and then the ink droplets are ejected again from the odd-numbered ink chambers. To
The ink liquid chamber 12 is divided into a plurality of groups to eject ink droplets.

Next, FIG. 1 is a perspective view of an ink ejecting apparatus.
0, the configuration and manufacturing method of the conventional example will be described. A plurality of grooves 15 for forming the ink liquid chambers 12 having the above-described shape are formed on the polarized piezoelectric ceramic plate 2 by grinding using a thin disk-shaped diamond blade or the like. The groove 15 is for the piezoelectric ceramic plate 2
Are formed in such a manner that they are parallel grooves having the same depth in almost the entire region, but gradually become shallower as approaching the end face 17, and become shallow and parallel shallow grooves 18 near the end face 17. The electrodes 13 are formed on the inner surfaces of the groove 15 and the shallow groove 18 by sputtering or the like. On the inner surface of the groove 15, the electrode 13 is formed only on the upper half of the side surface. On the inner surface of the shallow groove 18, the electrode 13 is formed on the entire side surface and bottom surface. Further, the ink inlet 21 and the manifold 22 are formed on the cover plate 3 made of a ceramic material by grinding or cutting.

Next, the groove 1 of the piezoelectric ceramic plate 2
5 The surface on the processing side and the surface on the processing side of the manifold 22 of the cover plate 3 are adhered by the epoxy adhesive 4 (FIG. 8) or the like such that each groove 15 forms the ink liquid chamber 12 having the above-described shape. I do. Next, the ink chambers 1 are provided on the end faces 16 of the piezoelectric ceramic plate 2 and the cover plate 3.
The nozzle plate 31 provided with the nozzles 32 is bonded at a position corresponding to the position 2. On the surface of the piezoelectric ceramic plate 2 opposite to the groove 15 processing side, each ink liquid chamber 12 is provided.
The substrate 41 provided with the conductive layer pattern 42 at a position corresponding to the position is bonded by an epoxy adhesive or the like. Then, the electrode 13 on the bottom surface of the shallow groove 18 and the pattern 42 of the conductive layer are connected by a conductive wire 43 by known wire bonding.

Next, the configuration of a conventional control unit will be described with reference to FIG. 11 showing a block diagram of the control unit. The conductive layer patterns 42 provided on the substrate 41 are individually connected to the LSI chip 51, and the clock line 52, the data line 53, the voltage line 54, and the ground line 55 are also connected to the LSI chip 51.
It is connected to a chip 51. The LSI chip 51 determines which nozzle 32 should eject ink droplets from the data appearing on the data line 53 based on the continuous clock pulse supplied from the clock line 52. Then, the LSI chip 51 applies the voltage V of the voltage line 54 to the pattern 42 of the conductive layer that is electrically connected to the electrode 13 in the ink liquid chamber 12 to be driven. Layer pattern 4
2 is connected to the ground line 55 to be grounded.

[0012]

However, in the ink ejecting apparatus 1 having the above-described structure, since the width of the side wall 11 is small, the side wall 11 has low mechanical strength. For this reason, a portion 2 a for improving the mechanical strength of the side wall 11 is provided in a region outside the grooves 15 on both outer sides of the piezoelectric ceramic plate 2, and is bonded to the cover plate 3.
The mechanical strength of the side wall 11 was improved. As described above, since the portion 2a that does not function as an actuator is made of an expensive piezoelectric ceramic material, there is a problem that the manufacturing cost of the ink ejecting apparatus 1 is high.

The cover plate 3 is made of the same or different ceramic material as the piezoelectric ceramic plate 2 because the cover plate 3 needs rigidity for the piezoelectric thickness shear deformation of the side wall 11. Therefore, the ink inlet 21
In addition, there is a problem that the manifold 22 is difficult to process.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide an ink ejecting apparatus in which the material cost is low and the manifold can be easily processed.

[0015]

In order to achieve this object, according to the first aspect of the present invention, an actuator member having a plurality of grooves serving as a plurality of ejection channels for ejecting ink.
And the actuator member covers the opening side of the groove.
And a cover plate bonded to the plurality of ejection channels, and a manifold for supplying ink to the plurality of ejection channels .
On both outer sides of the plurality of grooves of the actuator member.
Guide extending along and glued to the side
The actuator member and the cover are integrally formed.
And an auxiliary member provided separately from the plate .

According to a second aspect, the actuator member
I from a plurality of grooves serving as ejection channels for ejecting ink, sandwiching the groove, and side walls made of a piezoelectric material, at least part of which is polarized, the electrodes for generating an electric field to the piezoelectric material Ri, and deforming the side walls by application of a voltage to the electrode, Ru Monodea for ejecting ink ink giving pressure inside the injection channel.

In the third aspect, the actuator member and
A manifold of the auxiliary member is bonded to a corner formed by the cover plate .

According to a fourth aspect, the manifold of the auxiliary member is provided.
The actuator member and the cover plate
The guide portion of the auxiliary member is provided with the plurality of grooves.
Actuator member and cover play on both outer sides of
It has a shape along the both sides of the gut and is adhered to the both sides. In claim 5, the ink is ejected.
Actuator with multiple grooves to provide multiple injection channels
The above-described groove is formed in a tuator member and its actuator member.
A cover plate adhered to cover the opening side of the;
Manifold for supplying ink to multiple ejection channels
Ink jetting device consisting of an auxiliary member having
And the auxiliary member includes the actuator member and the power member.
Resin molded separately from the bar plate, and the manifold
From both ends of the plurality of grooves of the actuator member
An integrated guide that protrudes along the outer side
It is characterized by.

[0019]

In the ink ejecting apparatus according to the first aspect of the present invention, the guide portion of the auxiliary member assists the side portion of the actuator member, and the manifold of the auxiliary member supplies ink to the ejection channel. . With this auxiliary member, the mechanical strength of the actuator member is improved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. However, the same members as those in the related art are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIGS. 1, 2, 3 and 4,
The ink ejecting apparatus 101 includes the piezoelectric ceramic plate 1
02, a cover plate 103, a nozzle plate 131, and an auxiliary member 108.

The piezoelectric ceramic plate 102
The piezoelectric ceramic plate 102 is formed of a lead zirconate titanate (PZT) ceramic material, and is cut into a plurality of grooves 1 by a diamond blade or the like.
15 are formed. The side wall 111 serving as the side surface of the groove 115 is polarized in the direction of the arrow 105. The grooves 115 are of the same depth and are parallel. The depth of the grooves 115 depends on the piezoelectric ceramic plate 10.
2 gradually becomes shallower as it approaches one end face 117,
A shallow groove 118 is formed. On the inner surface of the groove 115, electrodes 113 are formed on the upper halves of both sides by sputtering, vapor deposition, plating, or the like. On the inner surface of the shallow groove 118, electrodes 113 are formed on the side and bottom surfaces thereof by sputtering, vapor deposition, plating, or the like. Thereby, the electrodes 1 formed on both side surfaces of the groove 115 are formed.
13 is electrically connected by an electrode 113 formed in a shallow groove 118.

Next, the cover plate 103 is
The piezoelectric ceramic plate 102 is made of the same or different ceramic material because it needs rigidity for the piezoelectric thickness shear deformation.

The piezoelectric ceramic plate 102
The surface on the processing side of the groove 115 is adhered to the cover plate 103 via the epoxy-based adhesive layer 104, and the groove 115 becomes a plurality of ink liquid chambers 112 spaced from each other in the lateral direction. The cover plate 103 is adhered to the end face 116 of the piezoelectric ceramic plate 102 in alignment with the groove 115.
Near the shallow groove 118 of the cover plate 10
3 is not blocked.

Next, the auxiliary member 108 is bonded to the side portions of the piezoelectric ceramics plate 102 and the cover plate 103 and the rear portion of the piezoelectric ceramics plate 102 behind the cover plate 103 via an epoxy-based adhesive layer 104. The auxiliary member 108 includes a guide portion 106 for assisting the sides of the piezoelectric ceramic plate 102 and the cover plate 103, and a piezoelectric ceramic plate 102.
At the rear of the cover plate 103 at
Cover auxiliary part 10 for closing a part of groove 115 and shallow groove 118
7 The cover auxiliary unit 107 has a manifold 121 for supplying ink to the ink liquid chamber 112.
Are formed.

Here, the guide portion 106 of the auxiliary member 108
Does not need to function as a piezoelectric material, and also does not require rigidity for deformation of the side wall 111 in the cover auxiliary portion 107, so that the auxiliary member 108 has excellent workability,
In addition, a low-cost material, for example, a resin material may be used. In order to prevent the ink in the ink chamber liquid 112 from leaking from the shallow groove 118, an epoxy adhesive (not shown) or the like is provided near the joint between the shallow groove 118 and the auxiliary member 108.

The piezoelectric ceramic plate 102
A nozzle plate 131 provided with a nozzle 132 at a position corresponding to the position of each ink liquid chamber 112 is bonded to the end face 116 of the cover plate 103. The nozzle plate 131 is formed of a plastic such as polyalkylene (eg, ethylene) terephthalate, polyimide, polyether imide, polyether ketone, polyether sulfone, polycarbonate, or cellulose acetate.

As in the prior art, the metal electrode 113 formed in the shallow groove 118 of the piezoelectric ceramic plate 102 is provided on the pattern 42 (FIG. 8) provided on the substrate 41 (FIG. 8).
The wires 43 are connected by conducting wires 43 (FIG. 8). As shown in FIG. 11, the patterns 42 are individually connected to the LSI chip 51, and the clock line 52, the data line 53, the voltage line 54, and the ground line 55 are also connected to the LSI chip 51. LSI
The chip 51 determines from the data appearing on the data line 53 from which nozzle 132 the ink droplet should be ejected based on the continuous clock pulse supplied from the clock line 52. And the LSI chip 5
1 indicates that the voltage V of the voltage line 54 is applied to the pattern 42 of the conductive layer conductive to the electrode 113 in the ink liquid chamber 112 to be driven.
Is applied, and the ground line 55 is connected to the conductive layer pattern 42 that is electrically connected to the electrodes 113 other than the ink liquid chamber 112 to be grounded.

Next, the operation of the ink ejecting apparatus 101 of this embodiment will be described. In order to eject ink droplets from the ink liquid chamber 112d of FIG. 2, a voltage pulse is applied to the ink liquid chamber 112d. This means that a voltage is applied to the electrode 113 facing the electrode 112, and the electrode 113 facing the ink liquid chamber 112, which is not indicated, is grounded). Then, an electric field in the direction of arrow 114c is generated on the side wall 111c, an electric field in the direction of arrow 114d is generated on the side wall 111d, and the side walls 111c and 111d move away from each other due to the piezoelectric thickness slip effect. Then, the ink liquid chamber 1
As the volume of 12d increases, the pressure in the ink liquid chamber 112d including the vicinity of the nozzle 132 decreases. This state is maintained for a time indicated by L / a. In the meantime, the ink chamber 11 is supplied from an ink supply source (not shown) via the manifold 121.
Ink is supplied to 2d. Note that L / a is the time required for the pressure wave in the ink liquid chamber 112 to propagate one way in the longitudinal direction of the ink liquid chamber 112 (from the manifold 121 to the nozzle plate 131 or vice versa). Yes, and is determined by the length L of the ink liquid chamber 112 and the speed of sound a in the ink.

According to the pressure wave propagation theory, the ink liquid chamber 112 d
The pressure in the inside reverses and turns to a positive pressure, but the voltage applied to the ink liquid chamber 112d is returned to 0 V in accordance with this timing. Then, the side walls 111c and 111d return to the state before deformation (see FIG. 1), and pressure is applied to the ink. At this time, the pressure turned positive and the side walls 111c, 1
11d returns to the state before the deformation, and the pressure generated is added, and a relatively high pressure is applied to the ink in the ink liquid chamber 112d, and the ink droplet is ejected from the nozzle 132.

In the above embodiment, first, the drive voltage is applied in the direction of increasing the volume of the ink liquid chamber 112d, and then the application of the drive voltage is stopped to reduce the volume of the ink liquid chamber 112d to a natural state. Ink droplets were ejected from the ink liquid chamber 112d, but first the drive voltage was applied to the ink liquid chamber 1d.
12d is applied so that the volume of the ink liquid chamber 11 decreases.
The ink droplets may be ejected from 2d, and then the application of the driving voltage may be stopped to increase the volume of the ink liquid chamber 112d from the reduced state to the natural state and supply the ink into the ink chamber 112d. Good.

As described above, in the ink ejecting apparatus 101 of this embodiment, the guide portion 106 of the auxiliary member 108 made of an inexpensive material is adhered to the side of the piezoelectric ceramic plate 102 and the cover plate 103. Therefore, the mechanical strength of the side wall 111 is improved. Therefore, the relatively expensive piezoelectric ceramic plate 102 may be small, and the manufacturing cost can be reduced. Also, the auxiliary member 108
Is formed of resin, the manifold 121 can be easily processed on the cover auxiliary portion 107, and the manufacturing cost can be reduced.

Next, a second embodiment of the present invention will be described. However, the same members as those in the first embodiment are denoted by the same reference numerals.

As shown in FIG. 5, FIG. 6, and FIG. 7, the ink ejecting apparatus 201 includes a piezoelectric ceramic plate 102, a cover plate 103, and an auxiliary member 208.

A plurality of grooves 115 are formed in the piezoelectric ceramic plate 102. In addition, the groove 1
The side wall 111 serving as the side surface of 15 is polarized in the direction of arrow 105. The grooves 115 are of the same depth and are parallel. The depth of each of the grooves 115 gradually decreases as approaching the one end face 117 of the piezoelectric ceramic plate 102, so that a shallow groove 118 is formed. And
The electrodes 113 are formed on the upper half of both sides of the groove 115, and the electrodes 113 are formed on the side surfaces and the bottom surface of the shallow groove 118. Thereby, the electrodes 1 formed on both side surfaces of the groove 115 are formed.
13 is electrically connected by an electrode 113 formed in a shallow groove 118.

Then, the piezoelectric ceramic plate 102
The surface of the groove 115 on the processing side and the cover plate 103 are adhered via the epoxy-based adhesive layer 104, and the grooves 115 are spaced apart in the horizontal direction and serve as ink liquid chambers 112 as parallel ejection channels and non-ejection channels. Air chamber 116
Are alternately configured. Note that air chambers 116 are arranged on both outer sides.

Next, the auxiliary member 208 is bonded to the side portions of the piezoelectric ceramic plate 102 and the cover plate 103 and the rear portion of the piezoelectric ceramic plate 102 behind the cover plate 103 via the epoxy-based adhesive layer 104. The auxiliary member 208 includes a guide portion 206 for assisting the sides of the piezoelectric ceramic plate 102 and the cover plate 103, and a piezoelectric ceramic plate 102.
At the rear of the cover plate 103 at
Cover assisting part 20 for closing a part of groove 115 and shallow groove 118
7 An ink supply port 221 that supplies ink to the ink liquid chamber 112 and does not supply ink to the air chamber 116 is formed in the cover auxiliary unit 207.

Here, the guide portion 206 of the auxiliary member 208
Does not need to function as a piezoelectric material, and also does not require rigidity for deformation of the side wall 111 in the cover auxiliary portion 207, so that the auxiliary member 208 has excellent workability,
In addition, a low-cost material, for example, a resin material may be used. In order to prevent the ink in the ink chamber liquid 112 from leaking from the shallow groove 118, an epoxy-based adhesive (not shown) or the like is provided near the joint between the shallow groove 118 and the auxiliary member 208.

Then, the piezoelectric ceramic plate 102
A nozzle plate 231 provided with a nozzle 232 at a position corresponding to the position of each ink liquid chamber 112 is bonded to the end surface 116 of the cover plate 103.

Next, as in the first embodiment, the shallow groove 11
Eight metal electrodes 113 are connected to the LSI chip 51 via the pattern 42 of the substrate 41. The LSI chip 51
Based on the continuous clock pulse supplied from the clock line 52, it is determined from the data appearing on the data line 53 from which nozzle 232 the ink droplet should be ejected. 113
The voltage V of the voltage line 54 is applied to the pattern 42 of the conductive layer that conducts to the conductive layer. In addition, the conductive layer pattern 42 that is electrically connected to the electrodes 113 other than the ink liquid chamber 112 to be driven is connected to the ground line 55.

Next, the operation of the ink ejection device 201 of this embodiment will be described. In order to eject ink droplets from the ink liquid chamber 112b of FIG. 6, a voltage pulse is applied to the ink liquid chamber 112b. Then, an arrow 114 is displayed on the side wall 111c.
An electric field in the c direction is generated, and an arrow 114d is displayed on the side wall 111d.
A direction electric field is generated, and the side walls 111c and 111d move away from each other due to the piezoelectric thickness-shear effect. The volume of the ink liquid chamber 112b increases, and the pressure in the ink liquid chamber 112b including the vicinity of the nozzle 32 decreases. This state is L
It is maintained for the time indicated by / a. During that time, ink is supplied from an ink supply source (not shown) to the ink liquid chamber 112b via the ink supply port 221.

After the time of L / a elapses, the ink liquid chamber 112b
Is returned to 0V. Then, the side wall 11
1c and 111d return to the state before deformation (see FIG. 5), and pressure is applied to the ink. At this time, the pressure that has turned positive and the pressure generated when the side walls 111c and 111d return to the state before deformation are added together, and a relatively high pressure is given to the ink in the ink liquid chamber 112b, and Drops are ejected from the nozzle 232.

As described above, in the ink ejecting apparatus 201 of this embodiment, the guide portion 206 of the auxiliary member 208 made of an inexpensive material is adhered to the sides of the piezoelectric ceramic plate 102 and the cover plate 103. Therefore, the mechanical strength of the side wall 111 is improved. Therefore, the relatively expensive piezoelectric ceramic plate 102 may be small, and the manufacturing cost can be reduced. Also, the auxiliary member 208
Is formed of resin, the ink supply port 221 can be easily formed in the cover auxiliary portion 207, and the manufacturing cost can be reduced. Further, in this embodiment, the ink supply port 221 is formed in the auxiliary member 208 so as to communicate only with the ink liquid chamber 112 but not with the air chamber 116.
No ink is supplied to the ink. For this reason, the side wall 111 for ejecting ink droplets from the ink liquid chamber 112b is provided.
The deformation of c and 111d is caused by the other ink liquid chambers 112a and 112d.
2c etc. are not affected. Accordingly, ink droplets are satisfactorily ejected from each ink liquid chamber 112, and the printing quality is good.

In the first and second embodiments, the grooves 115 are formed on one side of the piezoelectric ceramic plate 102. However, the piezoelectric ceramic plate is made thicker and the grooves are formed on both sides to form the ink liquid chamber. The upper and lower rows may be formed.

In the first and second embodiments, the cover plate 103 is adhered to the piezoelectric ceramic plate 102. However, a cover member having a plurality of grooves separated by side walls made of piezoelectric ceramic is provided. The zenith of the side wall 111 of the piezoelectric ceramic plate 102 may be bonded to the zenith of the side wall of the cover member.

In the first and second embodiments, the auxiliary member 1
Although the head 08 is bonded to the piezoelectric ceramic plate 102, the auxiliary member may be used as a holder for mounting the head on a carriage or the like.

[0047]

As apparent from the above description, in the ink ejecting apparatus according to the first aspect of the present invention, since the guide portion of the auxiliary member assists the side portion of the actuator member, the actuator member has The mechanical strength of the actuator is improved, and the actuator member can be small, so that the material cost is reduced. Further, the processing of the manifold of the auxiliary member is easy, and the productivity is good.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an ink ejecting apparatus according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an operation of the ink ejecting apparatus according to the first embodiment.

FIG. 3 is a perspective view illustrating an ink ejecting apparatus according to the first embodiment.

FIG. 4 is a plan view showing the ink ejection device of the first embodiment.

FIG. 5 is a cross-sectional view illustrating an ink ejecting apparatus according to a second embodiment.

FIG. 6 is an explanatory diagram showing the operation of the ink ejection device of the second embodiment.

FIG. 7 is a perspective view illustrating an ink ejecting apparatus according to a second embodiment.

FIG. 8 is a cross-sectional view illustrating a conventional ink ejecting apparatus.

FIG. 9 is an explanatory diagram illustrating an operation of a conventional ink ejecting apparatus.

FIG. 10 is a perspective view showing a conventional ink ejecting apparatus.

FIG. 11 is a block diagram illustrating a control unit of a conventional ink ejecting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 Ink ejecting device 102 Piezoelectric ceramic plate 103 Cover plate 105 Polarization direction 106 Guide part 107 Cover auxiliary part 108 Auxiliary member 111 Side wall 112 Ink liquid chamber 113 Electrode 121 Manifold 201 Ink ejecting apparatus 206 Guide part 207 Cover auxiliary part 208 Auxiliary member 221 Ink Supply port

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41J 2/045 B41J 2/055 B41J 2/16

Claims (5)

(57) [Claims] An actuator member having a plurality of grooves serving as a plurality of ejection channels for ejecting ink;
Attached to the actuator member so as to cover the opening side of the groove.
And a cover plate for supplying ink to the plurality of ejection channels, and actuating the manifold from both ends of the manifold.
Along the sides of both sides of the plurality of grooves of the heater member.
And a guide portion extending and adhered to a side portion thereof is integrally formed with the actuator member and the cover plate.
An ink ejecting apparatus comprising an auxiliary member provided separately . 2. The piezoelectric device according to claim 1, wherein the actuator member includes a plurality of grooves serving as ejection channels for ejecting ink, a side wall sandwiching the grooves, and at least partially formed of a polarized piezoelectric material, and an electric field applied to the piezoelectric material. Ri Do from the electrode for generating, claims and deforming said side walls by applying a voltage to said electrodes, wherein said is to eject ink to the ink by applying pressure injection in the channel 1
The ink ejecting apparatus according to claim 1. 3. The actuator member and the cover member.
The corner portion formed by the rates, Maniho of the auxiliary member
Cold ink ejecting device according to claim 1 or 2, wherein the is bonded. Manifold according to claim 4, wherein said auxiliary member, the A
Glued to the actuator member and the cover plate,
The guide portion of the auxiliary member has a shape along both sides of the actuator member and the cover plate on both outer sides of the plurality of grooves, and is bonded to both sides thereof . the ink jet apparatus of placing serial any. 5. A plurality of ejection channels for ejecting ink.
Actuator member having a plurality of grooves,
Attached to the actuator member so as to cover the opening side of the groove.
Cover plate and the plurality of injection channels
An auxiliary member having a manifold for supplying ink
In the ink jetting device, the auxiliary member includes the actuator member and the cover plate.
The resin is molded separately from the rate, and both ends of the manifold
From both sides of the plurality of grooves of the actuator member
With a guide protruding along the side
And an ink ejecting apparatus.