JP2000079687A - Recording head and recorder employing it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording head in which assembling work including wiring work is facilitated, and a recorder having the recording head. SOLUTION: The recording head has a plurality of segments 37 each comprising a plurality of nozzles, and a plurality of terminals 58, 64 for controlling ink ejection from the nozzle. The segments are mounted on a holder 70 and a printed wiring board 72 arranged with a pattern of a plurality of conductors corresponding to the terminals of the segments is secured to the bolder 70. The terminal of each segment is connected electrically with the conductor pattern on the printed wiring board through an interposed anisotropic conductive connector 78. This structure realizes a recording head in which assembling work is facilitated including wiring work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a recording head such as an ink jet head and a recording apparatus having the head.

[0002] As a typical non-impact recording apparatus of the desktop type, an ink jet recording apparatus has attracted attention because it is simple to manufacture and can easily realize full color printing.

[0003]

2. Description of the Related Art A plurality of pressure chambers are provided in a recording head of an ink jet recording apparatus, and each pressure chamber incorporates, for example, a piezoelectric element or a heating resistor as an actuator. Each pressure chamber is partially defined by a nozzle plate, and a plurality of nozzles are formed in the nozzle plate corresponding to the pressure chambers.

[0004] Each pressure chamber is supplied with ink from a common ink chamber, and when an actuator is actuated, a pressure wave is generated in the corresponding pressure chamber, causing ink droplets to be ejected from a nozzle, thereby causing a recording medium such as paper to be ejected. Dot recording is performed.

[0005]

In a recording apparatus having a conventional recording head as described above, in order to increase the recording speed, it is necessary to use a plurality of segments with the above recording head configuration as one segment. It is valid. In this case, since each segment has a plurality of driving terminals, assuming that the number is N and the number of segments to be used is M, at least NM electrical connections are made for one recording head. Required.

When such multiple electrical connections are made by metallurgical bonding such as soldering, the recording head becomes defective if there is only a partial bonding failure, resulting in a poor production yield. For example, when a plurality of segments are mounted on one common holder, the position of the terminal of one segment and the position of the terminal of another segment are not on the same plane due to a manufacturing error due to assembly accuracy or the like. In such a case, a bonding failure is likely to occur.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a recording head which can be easily assembled including wiring, and in particular, to provide a recording head having a plurality of segments. Another object of the present invention is to provide a recording apparatus having such a recording head.

[0008]

According to the present invention, there is provided a recording head having a plurality of segments. Each segment has a plurality of nozzles for ejecting ink and a plurality of terminals for controlling ejection of ink from the nozzles. The plurality of segments are mounted on a holder. A printed wiring board having a plurality of conductor patterns provided corresponding to a plurality of electrodes of each segment is fixed to the holder. In order to electrically connect the plurality of electrodes of each segment and the plurality of conductor patterns of the printed wiring board, an anisotropic conductive connector is interposed between each segment and the printed wiring board.

The anisotropic conductive connector is, for example, composed of a plurality of conductors which are arranged at substantially equal intervals and whose arrangement pitch is smaller than the width of each electrode and each conductor pattern, and an elastic body which supports the plurality of conductors. Can be configured.

In the present invention, since an anisotropic conductive connector is used, by appropriately setting the relative positional relationship between the plurality of electrodes of each segment and the plurality of conductor patterns of the printed wiring board, Electrical connection, that is, wiring, between the segment and the printed wiring board can be easily performed, and the object of the present invention is achieved. The use of the anisotropic conductive connector allows the recording head to be reassembled unlike the case of metallurgical joining such as soldering, so that the production yield of the recording head is improved.

[0011] In particular, the inconvenience in wiring when using a plurality of segments as described above is solved by using a plurality of anisotropic conductive connectors corresponding to the plurality of segments. In other words, even if the terminals of certain two segments and the terminals of another segment are not on the same plane, the displacement can be absorbed by, for example, the elastic deformation of each anisotropic conductive connector. Electrical connection with the printed wiring board can be easily made.

According to another aspect of the invention, a housing, a platen rotatably mounted on the housing, first driving means for driving the platen, and a housing mounted substantially parallel to the platen. A recording apparatus includes a guide member, a carriage movably attached to the guide member, second driving means for driving the carriage, and a recording head mounted on the carriage. The recording head is provided by a recording head according to the invention.

[0013]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Referring to FIG. 1, an embodiment of a color inkjet printer (recording apparatus) according to the present invention is schematically illustrated. A platen 12 is rotatably provided in a housing 10 of the recording apparatus.

During a recording operation, the platen 12 is driven by the drive motor 1.
4, the recording paper P is intermittently fed in the direction of arrow A at a predetermined feed pitch. Further, a platen 1 is provided in a housing 10 of the recording apparatus.
A guide rod 16 is provided on the upper side in parallel to 2 and a carriage 18 is slidably mounted on the guide rod 16.

The carriage 18 is mounted on an endless drive belt 20, and the endless drive belt 20
2, which causes the carriage 18 to reciprocate (scan) along the platen 12.

The carriage 18 has a recording head 2 for black.
4 and a recording head 26 for color. The recording head 26 for color can be composed of three parts. The recording head 24 for black has a tank 2 for black ink.
8 is removably mounted, and color ink tanks 30, 32 and 34 are removably mounted on the color recording head 26.

The black ink tank 28 contains black ink as a matter of course, and the color ink tanks 30, 32 and 34 respectively contain yellow ink, cyan ink and magenta ink.

While the carriage 18 is reciprocated along the platen 12, the recording head 24 for black and the recording head 26 for color are driven based on image data obtained from a word processor, a personal computer or the like, thereby recording. Predetermined characters, images, and the like are recorded on the paper P. When the recording operation is stopped, the carriage 18 returns to the home position, and a nozzle maintenance mechanism 36 is provided at this home position.

The nozzle maintenance mechanism 36 is provided with a movable suction cap (not shown) and a suction pump (not shown) connected to the movable suction cap. Recording head 2
When the nozzles 4 and 26 are positioned at the home positions, the suction cap is sucked to the nozzle plate of each recording head, and the nozzles of the nozzle plate are sucked by driving the suction pump. In this way, clogging of the nozzle is prevented.

FIG. 2 is a sectional view of an ink jet head (recording head) applicable to the recording apparatus shown in FIG. This ink jet head has a plurality of (here, six) segments 37. This ink jet head is, for example, a recording device shown in FIG.
Can be adapted to each ink. Specifically, this ink jet head may be used as the recording head 24 for black, or the recording head 2 for color.
6 or as a part of the recording head 26 for color recording.

FIGS. 3, 4 and 5 are a front perspective view, a rear perspective view and a sectional view of each segment 37 shown in FIG. 2, respectively. As best shown in FIG.
The segment 37 has a piezoelectric element plate 40. The piezoelectric element plate 40 is made of, for example, barium titanate (BaTi
O ₃ ) green sheets are laminated in a plurality of layers, a plurality of individual electrodes 52 and a plurality of ground electrodes 54 are embedded between the green sheets, and the green sheets are integrally bonded by applying pressure while heating. It can be manufactured by firing the integrated laminated green sheet.

The piezoelectric element plate 40 has a displacement part (or active part) 56 that can function as one of a plurality of piezoelectric elements. In the displacement part 56, the individual electrodes 52 and the ground electrodes 54 are alternately embedded in the piezoelectric element plate 40.

As best shown in FIG. 4, each individual electrode 52 is divided by a plurality of slits 55, and each individual electrode 52 divided by the slit is connected to an adjacent individual electrode 5
2 electrically insulated. The divided individual electrode 52 is directly connected to the individual terminal 58 on the back side of the segment 37.

As shown in FIGS. 3 and 5, each ground electrode 54 has a metallized surface 6 on the entire surface of the piezoelectric element plate 40.
As a result, the pair of conductor patterns (electrodes) 62 embedded in the piezoelectric element plate 40 are connected to a pair of ground terminals 64 provided on the back side of the segment 37 as shown in FIG. . The number of the conductor patterns 62 may be one.

A joining member 42 is provided on the upper surface of the piezoelectric element plate 40.
The pressure chamber plate 44 is adhered via the. Pressure chamber plate 44
Are formed with a common ink chamber 46 and a plurality of pressure chambers 48 connected to the common ink chamber 46 via ink supply paths 50, respectively. The pressure chamber plate 44 can be manufactured, for example, by molding using a thermosetting epoxy resin mixed with a filler.

A nozzle plate 68 having a plurality of nozzles 66 is bonded to the front surfaces of the piezoelectric element plate 40 and the pressure chamber plate 44. The nozzle plate 68 is formed of, for example, stainless steel. Each nozzle 66 communicates with each pressure chamber 48. Common ink chamber 46, ink supply path 50, and pressure chamber 4
8 is filled with ink.

By changing the drive voltage or drive waveform applied to each individual terminal 58, ink can be ejected from each nozzle 66 at a predetermined timing while controlling the amount of ink particles to be ejected.

FIG. 6A shows a driving waveform applied to the individual terminal 58 when ejecting large particles of ink.
FIG. 6B shows a driving waveform applied to the individual terminal 58 when ejecting small particles of ink. The time (T) on the horizontal axis is on the order of several tens of microseconds.

Normally, the individual terminal 58 has a base voltage V ₀ = 2
2 volts is applied, so that the liquid level position (meniscus) in the nozzle 66 substantially matches the surface of the nozzle plate 68.

To increase the dot diameter recorded on the recording paper P by ejecting large particles, the applied voltage is gradually reduced to about 9 volts as shown in FIG. Increase rapidly to about 35 volts over time.

When the applied voltage is reduced to about 9 volts, the ink level is drawn into the nozzle 66. Next, when about 35 volts is applied to the individual terminal 58, the displacement portion 56 (see FIG. 5) is deformed as shown by a dotted line 57, and the pressure chamber 4
The pressure in 8 changes. This pressure change causes the nozzle 6
Large particles are ejected from 6.

On the other hand, when it is desired to eject small particles from the nozzle 66, a drive waveform as shown in FIG. That is, the base voltage V ₀ is reduced from 22 volts to 0 volts and then rapidly increased to 15 volts.

When the voltage applied to the individual terminal 58 is reduced to 0 volt, the liquid level in the nozzle 66 is drawn. Next, when approximately 15 volts are applied to the individual terminals 58, small particles are ejected from the nozzle 66.

As described above, each segment 37 includes a pressure chamber plate 44 for defining a plurality of pressure chambers 48 connected to the common ink chamber 46 via the ink supply passages 50, respectively.
A nozzle plate 68 having a plurality of nozzles 66 communicating with the pressure chambers 48, and a plurality of piezoelectric elements (displacement portions 5 of the piezoelectric element plate 40) for changing the volume of each pressure chamber 48, respectively.
6), it is possible to provide an inkjet head that is easy to manufacture.

Each displacement portion 56 includes a plurality of individual electrodes 52 embedded in the piezoelectric element plate 40 and a plurality of ground electrodes 54 embedded in the piezoelectric element plate 40 alternately with the individual electrodes 52. Therefore, the volume of each pressure chamber 48 can be effectively changed, and the driving power can be reduced.

Further, the terminals 58 and 64 are connected to the segment 37.
Since the individual electrode 52 is directly connected to the terminal 58 on the back surface, and the ground electrode 54 is connected to the terminal 64 on the back surface by the metallization processing 60 and the pair of conductor patterns 62. The electric wiring in the segment 37 is simplified, and the terminals 58 and 64 are located on the same plane, so that the
7 and its driving circuit can be easily wired.

As shown in FIG.
Are mounted on the holder 70 such that the terminals 58 and 64 are substantially coplanar. Thereby,
Using one printed wiring board 72, all segments 3
7 can be electrically connected to those drive circuits (not shown). Specifically, it is as follows.

FIG. 7 is a plan view of the printed wiring board 72. The printed wiring board 72 has a plurality of conductor patterns 74 arranged at equal pitches in the vertical direction in FIG. 7 and a pair of conductor patterns 76 provided so as to sandwich the conductor pattern 74 for one segment 37. are doing. The vertical direction in FIG. 7 corresponds to the direction penetrating the paper surface of FIG.

The conductor patterns 74 and 76 include the individual terminals 58 and the ground terminals 6 respectively.
4 (see FIG. 4). Then, the set of these conductor patterns 74 and 76 is adapted to fit the six segments 37 shown in FIG.
Are arranged in six rows in the left-right direction.

The arrangement direction of the segments 37 (the left-right direction in FIGS. 2 and 7) is parallel to the scanning direction of the recording head along the platen 12 (see FIG. 1). The arrangement direction of the conductor patterns 74 and 76 (the vertical direction in FIG. 7) is perpendicular to the scanning direction.

The printed wiring board 72 has a pair of holes 72A for positioning and four holes 72B for fixing.
As shown in FIG. 2, the terminals 58 and 64 of each segment 37 are connected to the conductor patterns 74 and 7 of the printed wiring board 72.
An anisotropically conductive connector is used in accordance with the present invention to electrically connect to each of the six. Here, six anisotropic conductive connectors 78 are used for the segments 37.

FIG. 8A is a partial plan view of the anisotropic conductive connector 78, and FIG. 8B is a cross-sectional view of the anisotropic conductive connector 78 along the line 8B-8B. Here, the anisotropic conductive connector 78 includes an elastic body 80 made of silicone sponge rubber or the like having a U-shaped cross section, and a plurality of conductors 82 arranged on the surface of the elastic body 80 in a direction perpendicular to the U-shaped cross section.
Consists of Each conductor 82 is insulated from an adjacent conductor 82. The conductor 82 may be provided by, for example, a gold-plated brass wire on the surface.

For example, the width of the conductor 82 is about 0.04 mm, the arrangement pitch of the conductors 82 is 0.1 ± 0.05 mm, and the length of the anisotropic conductive connector 78 is about 30 mm. The height and width in the cross section of the conductive connector 78 are each about 1.5 mm.

The arrangement pitch of the conductors 82 is
Are set sufficiently smaller than the width of each of the terminals 58 and 64, and sufficiently smaller than the width of each of the conductor patterns 74 and 76 of the printed wiring board 72. That way,
As shown in FIG. 2, the elastic members 80 are elastically deformed by interposing an anisotropic conductive connector 78 between the segment 37 and the printed wiring board 72, so that the terminals 58 and 64 of each segment 37 and the printed wiring Electrical connection between the corresponding conductor patterns 74 and 76 of the plate 72 can be made independently, that is, while ensuring insulation between adjacent terminals. In this case, for example, one of the individual terminals 58
One is electrically connected to one corresponding conductor pattern 74 by several conductors 82 of the anisotropic conductive connector 78.

The conduction between the conductor 82 of the anisotropic conductive connector 78 and the conductor patterns 74 and 76 of the printed wiring board 72 is made by mechanical contact due to the restoring force of the elastically deformed elastic body 80. Therefore, the conductor patterns 74 and 7
By providing 6 so as to protrude from the plane of the printed wiring board 72, conduction failure can be reliably prevented. To do so, the conductor patterns 74 and 76 may be formed by thick film plating.

Similarly, by providing the terminals 58 and 64 of the segment 37 so as to protrude from the back surface of the segment 37, it is possible to reliably prevent poor conduction between the terminals 58 and 64 and the conductor 82.

The proper amount of compression of the anisotropic conductive connector 78 is determined by the distance between the segment 37 and the printed wiring board 72 when the height of the connector 78 in the vertical direction in FIG. Of 1.5mm 70-80%
Is obtained by setting In this case, the elastic body 8
A value of 0 means shrinking by 0.3 to 0.45 mm in the vertical direction in FIG. Therefore, a variation in assembly accuracy of about 0.1 mm can be tolerated. Specifically, even if the terminals 58 and 64 of the six segments 37 are displaced from the same plane within the above-described range of variation, the present invention is applied to ensure that the electrical wiring is secure. And it can be easily performed.

As shown in FIG. 2, the printed wiring board 7
In order to fix the printed wiring board 72 to the holder 70 and determine the relative positional relationship between the printed wiring board 72 and the holder 70, the template 84 attached to the holder 70 and the printed wiring board 72 attached to the template 84 A sub holder 86 for pressing against 70 is used. The sub holder 86 can be provided as a part of the ink tank holder, for example. In this embodiment, the sub-holder 86 is connected to the printed wiring board 72 via a block 88.
Is pressed against the holder 70 downward in FIG.

By using the template 84,
Since the elastic deformation and displacement of each anisotropic conductive connector 78 are limited by the space defined by each segment 37, template 84 and printed wiring board 72, assembly of the ink jet head can be easily performed.

FIGS. 9A, 9B, and 9C are a plan view, a front view, and a side view, respectively, showing a state in which the segment 37 is mounted on the holder 70. Reference numeral 90 denotes an ink supply pipe provided in each segment 37, and ink is supplied to the common ink chamber 46 (see FIG. 5) of each segment 37 via this pipe 90. .

In this embodiment, the holder 70 has a pair of pins (or projections) 92 on both sides in the arrangement direction of the segments 37.
And the pin 92 is in the hole 72 of the printed wiring board 72.
A (see FIG. 7) allows the relative positional relationship between each segment 37 and the printed wiring board 72 in the planar direction to be determined. By doing so,
By simply mounting the printed wiring board 72 on the holder 70, the terminals 58 and 64 of each segment 37 are connected to the printed wiring board 7.
Since the second conductor patterns 74 and 76 can be opposed to each other with high precision, assembly of the ink jet head becomes easy.

The holder 70 has four holes 70A through which four screws 94 (see FIG. 2) for fixing the template 84 to the holder 70 pass. FIGS. 10A and 10B respectively show a template 84 in a holder 70.
It is the top view and front view which show the state which mounted. By screwing four screws 94 passing through the hole 70A of the holder 70 from the bottom to the top in FIG.
Is tightly fixed.

Further, four screws (not shown) penetrating the four holes 84B formed at the four corners of the template 84 are provided.
By screwing into a screw hole (not shown) formed in the sub holder 86, the sub holder 86 is fixed to the template 84, and the printed wiring board 72 and the block 88 are provided between the template 84 and the sub holder 86.
Comes into close contact with each other.

Therefore, by appropriately setting the thickness of the template 84, each anisotropic conductive connector 78
Can obtain an appropriate compression amount. Further, when the inkjet head is mounted on the carriage 18 (see FIG. 1), two screws 96 (see FIG. 2) penetrating two holes 84C formed in the template 84 are screwed into screw holes (not shown) of the carriage 18. Can be performed.

As described above, according to the present embodiment, the electrical connection between each segment and the printed wiring board is made by using the anisotropic conductive connector. Wiring in the head can be performed. Printed wiring boards
For example, it can be electrically connected to a drive circuit provided in the printing apparatus by an FPC (flexible printed wiring board). In order to reduce the number of wirings in the FPC, an IC for providing all or a part of the driving circuit may be mounted on a printed wiring board.

In this embodiment, the number of nozzles 66 in each segment 37 is several tens, and therefore, the number of nozzles 66 in six segments 37 is several hundred. Therefore, by using this inkjet head as each of the inkjet heads 24 for black and the inkjet heads 26 for color shown in FIG. 1 or as one of the inkjet heads 24 and 26, the recording speed can be increased. Can be.

When the ink jet head of this embodiment is used as the color ink jet head 26, six segments 37 may be assigned to cyan, yellow and magenta, respectively. Alternatively, the inkjet head according to the present embodiment may be assigned to each color of the inkjet head 26 for color.

FIGS. 11A and 11B respectively show:
It is the partial top view of another anisotropic conductive connector applicable to this invention, and 11B-11B sectional drawing. Here, the anisotropic conductive connector 78 ′ is the same as the rectangular parallelepiped elastic body 102 formed by sandwiching a relatively high hardness silicone rubber belt 98 between a pair of relatively low hardness silicone rubber belts 100. A plurality of conductor lines 104 embedded in the belt 98 so as to be parallel to each other on a plane. Conductor line 104 may be provided by a brass wire with a gold plated surface.

The arrangement pitch of the conductor lines 104 is also the same as that of the conductor 82 of the anisotropic conductive connector 78 in the above embodiments.
Is set in the same manner as the array pitch of By using such an anisotropic conductive connector 78 ', wiring in the ink jet head can be easily performed.

Further, as another anisotropic conductive connector, a connector obtained by alternately laminating a conductive rubber sheet containing fine carbon powder and an insulating rubber sheet may be employed.
In the embodiment described above, a piezoelectric element is exemplified as an actuator for changing the volume of each pressure chamber, but another actuator such as a heating element may be used.

[0061]

As described above, according to the present invention,
There is an effect that it is possible to provide a recording head that can be easily assembled including wiring and a recording apparatus having the recording head. The effects of the preferred embodiment of the present invention are as described above, and thus description thereof will be omitted.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a recording apparatus according to the present invention.

FIG. 2 is a cross-sectional view showing an embodiment of the inkjet head according to the present invention.

FIG. 3 is a front perspective view of each segment.

FIG. 4 is a rear perspective view of each segment.

FIG. 5 is a sectional view of each segment.

FIGS. 6A and 6B are diagrams showing examples of driving waveforms of individual electrodes.

FIG. 7 is a plan view of a printed wiring board.

FIGS. 8A and 8B are a partial plan view and 8B-8 of an anisotropic conductive connector applicable to the present invention, respectively.
It is B sectional drawing.

FIGS. 9A, 9B, and 9C are a plan view, a front view, and a side view, respectively, showing a state where segments are mounted on a holder.

10A and 10B are a plan view and a front view, respectively, showing a state where a template is mounted on a holder.

11 (A) and 11 (B) are partial plan views of another anisotropic conductive connector applicable to the present invention, and FIGS.
It is 11B sectional drawing.

[Explanation of symbols]

 Reference Signs List 10 housing 12 platen 14, 22 drive motor 16 guide rod 18 carriage 20 endless drive belt 24, 26 recording head 37 segment 40 piezoelectric element plate 44 pressure chamber plate 46 common ink chamber 48 pressure chamber 50 ink supply path 58, 64 terminal 66 nozzle 68 Nozzle plate 70 Holder 78, 78 'Anisotropically conductive connector 84 Template 86 Sub holder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mutsuro Watanabe 4-1-1, Kamidadanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture Inside Fujitsu Limited (72) Hiromitsu Soneda 4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa No. 1 Fujitsu Limited F-term (reference) 2C056 EA24 FA04 2C057 AF93 AG12 AG44 AG84 AP02 BA03 BA14 2C061 AQ05 BB30 CG13

Claims (14)

[Claims] A plurality of segments each having a plurality of nozzles for ejecting ink and a plurality of terminals for controlling ejection of ink from the nozzles; a holder on which the plurality of segments are mounted; A printed wiring board having a plurality of conductor patterns provided corresponding to the plurality of terminals; a means for fixing the printed wiring board to the holder; and a means interposed between each of the segments and the printed wiring board. A print head comprising: an anisotropic conductive connector for electrically connecting the plurality of terminals to the plurality of conductor patterns. 2. The recording head according to claim 1, wherein the anisotropic conductive connector has an elastic body having a U-shaped cross section, and is arranged on a surface of the elastic body in a direction perpendicular to the cross section. And a plurality of conductors. 3. The recording head according to claim 1, wherein the anisotropic conductive connector is embedded in a rectangular parallelepiped elastic body and in the elastic body so as to be parallel to each other on the same plane. A recording head comprising: 4. The recording head according to claim 1, wherein the anisotropic conductive connectors are arranged at substantially equal intervals, and the arrangement pitch is smaller than the width of each terminal and each conductor pattern. A recording head comprising: a plurality of conductors; and an elastic body that supports the plurality of conductors. 5. The recording head according to claim 1, wherein said fixing means includes: a template attached to said holder; and a sub-holder attached to said template for pressing said printed wiring board against said holder. A recording head, wherein elastic deformation and displacement of the anisotropic conductive connector are limited by a space defined by each of the segments, the template, and the printed wiring board. 6. The recording head according to claim 1, wherein the holder has at least two protrusions, and the printed wiring board has at least two holes through which the at least two protrusions pass. A recording head for determining a relative positional relationship between each of the segments and the printed wiring board. 7. The recording head according to claim 1, wherein the plurality of conductor patterns are provided so as to protrude from a plane of the printed wiring board. 8. The recording head according to claim 1, wherein the plurality of segments are arranged in a first direction parallel to a scanning direction of the recording head, and the plurality of nozzles of each segment are Recording heads arranged in a second direction perpendicular to the first direction; 9. The recording head according to claim 1, wherein each of the segments includes a pressure chamber plate for defining a plurality of pressure chambers connected to the common ink chamber via ink supply paths. A nozzle plate having the plurality of nozzles and fixed to the pressure chamber plate such that the plurality of nozzles respectively communicate with the plurality of pressure chambers; and a plurality of nozzle plates for changing the volume of each of the pressure chambers. A recording head, comprising: a piezoelectric element; wherein the plurality of terminals are electrically connected to the plurality of piezoelectric elements. 10. The recording head according to claim 9, wherein each of the piezoelectric elements has a plurality of individual electrodes embedded in the element and a plurality of individual electrodes embedded in the element alternately with the individual electrodes. A recording head including a ground electrode. 11. The recording head according to claim 10, wherein the plurality of terminals are provided on the back of each of the segments, and each of the individual electrodes is directly connected to each of the terminals on the back. The recording head according to claim 1, wherein each of the segments further includes at least one electrode for connecting the ground electrode to each of the terminals. 12. The recording head according to claim 1, wherein the plurality of terminals are provided so as to be located substantially on the same plane. 13. A recording apparatus, comprising: a housing; a platen rotatably mounted on the housing; first driving means for driving the platen; and a housing which is substantially parallel to the platen. A guide member attached to the guide member, a carriage movably attached to the guide member, second driving means for driving the carriage, and a recording head mounted on the carriage. 13. A recording device, which is the recording head according to any one of 1 to 12. 14. The recording apparatus according to claim 13, wherein the recording head includes a plurality of recording heads.