JP2004090470A - Inkjet head, its manufacturing process, and inkjet printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inkjet head, and its manufacturing process, in which both reduction in the quantity of dust adhering to the nozzle chip and facilitation of wiring work to the nozzle chip are attained, and to provide an inkjet printer employing such an inkjet head. <P>SOLUTION: The inkjet head comprises a nozzle chip 21 provided with connection terminals 21d at the upper end part 21c, flexible wiring boards 24a and 24b connected with the connection terminals 21d of the nozzle chip 21, and manifolds 22a and 22b mounted on the side part of the nozzle chip 21 wherein the joints of the connection terminals 21d and the flexible wiring boards 24a and 24b are located above the uppermost end of the manifolds 22a and 22b. When the inkjet head is manufactured, the manifolds 22a and 22b are mounted on the side part of the nozzle chip 21 and then the flexible wiring boards 24a and 24b are connected with the connection terminals 21d of the nozzle chip 21. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an inkjet head, a method for manufacturing the same, and an inkjet printer.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an ink jet printer that records a predetermined image by discharging ink onto a recording medium such as a sheet of paper or a thin plastic plate has been proposed and put into practical use. An ink jet printer is provided with an ink jet head having nozzles (ink ejection ports), and prints a predetermined image by discharging ink from a nozzle toward a recording medium while moving the ink jet head in a predetermined direction. ing.
[0003]
FIG. 6 is an exploded perspective view for explaining a configuration near a nozzle of a conventional inkjet head. As shown in FIG. 6, a portion near a nozzle of a conventional ink jet head includes a frame 110, a nozzle chip 120, a flexible wiring board 130, a manifold 140, and the like.
[0004]
The frame 110 is a member that is fixed in a state of being strictly positioned so as to have a predetermined positional relationship with respect to a carriage (not shown), and moves in a predetermined direction together with the carriage. The lower end portions of the nozzle tip 120 and the manifold 140 are fixed to the frame 110.
[0005]
The nozzle tip 120 is a thin plate-shaped member provided with a nozzle serving as an ink discharge port at the lower end. Connection terminals are formed at the upper end of the nozzle chip 120, and the flexible wiring board 130 is connected to the connection terminals.
[0006]
The manifold 140 is a member that is attached to a side surface of the nozzle chip 120 as shown in FIG. 6 and that functions as a branch pipe that supplies ink to the nozzle chip 120 from the outside. The upper end 141 of the conventional manifold 140 is provided with a discharge port 142 for discharging a cleaning liquid at the time of cleaning the inside thereof. As shown in FIG. 6, the upper end of the outlet 142 is located above the connection terminal forming position 121 at the upper end of the nozzle chip 120 to which the manifold 140 is attached.
[0007]
[Problems to be solved by the invention]
When assembling the vicinity of the nozzle of the conventional inkjet head described above, first, the flexible wiring board 130 is connected to the connection terminal of the nozzle chip 120, and then the manifold 140 is attached to the side surface of the nozzle chip 120 through a process of Was. However, when such a step is adopted, there is a problem that the amount of dust attached to the nozzle tip 120 increases.
[0008]
For this reason, the amount of dust attached to the nozzle chip 120 is reduced by firstly attaching the manifold 140 to the side surface of the nozzle chip 120 and then connecting the flexible wiring board 130 to the connection terminal of the nozzle chip 120. Is preferred.
[0009]
However, in the conventional manifold 140, as shown in FIG. 6, the upper end position of the discharge port 142 is located above the connection terminal forming position 121 of the nozzle chip 120. There is a problem that the connection work (wiring work) of the flexible wiring board 130 becomes extremely difficult due to the outlet 142 of the 140.
[0010]
An object of the present invention is to provide an ink jet head and a method of manufacturing the same, which can achieve both a reduction in the amount of dust attached to a nozzle chip and an easy wiring operation to the nozzle chip. . Another object of the present invention is to provide an ink jet printer having the above ink jet head.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the invention described in claim 1 is
A nozzle provided with a nozzle at a lower end thereof, a connection terminal provided at an upper end thereof, a wiring connected to the connection terminal of the chip, and a manifold attached to a side of the chip, ,
A position of a connection portion between the connection terminal and the wiring is located above an uppermost end position of the manifold.
[0012]
According to the first aspect of the present invention, the position of the connection portion between the connection terminal of the chip and the wiring is located above the uppermost position of the manifold mounted on the side of the chip. After the manifold is mounted on the side, the work of connecting the wiring to the connection terminal of the chip (wiring work) can be performed, and the wiring work is extremely easy. In addition, since the wiring work can be performed with the manifold attached to the side of the chip, the amount of dust attached to the chip can be significantly reduced.
[0013]
The invention according to claim 2 is the inkjet head according to claim 1,
The manifold,
The uppermost position is constituted by a flat surface.
[0014]
The invention according to claim 3 is:
A nozzle provided with a nozzle at a lower end thereof and a connection terminal provided at an upper end thereof, a wiring connected to the connection terminal of the chip, and a manifold mounted on a side of the chip; In a method of manufacturing an ink jet head, a position of a connection portion between a terminal and the wiring is disposed above an uppermost end position of the manifold.
A first step of mounting the manifold on a side of the chip;
A second step of connecting the wiring to the connection terminals of the chip after the first step;
It is characterized by having.
[0015]
According to the third aspect of the present invention, since the inkjet head is manufactured by connecting the wiring to the connection terminals of the chip after the manifold is mounted on the side of the chip, the amount of dust attached to the chip is significantly reduced. Can be done. In addition, since the connection position between the connection terminal of the chip and the wiring is disposed above the uppermost position of the manifold, the work of connecting the wiring to the connection terminal of the chip (wiring work) is extremely easy.
[0016]
The invention according to claim 4 is an ink jet printer,
An ink jet head according to claim 1 or 2 is provided.
[0017]
According to the fourth aspect of the present invention, since the inkjet head according to the first or second aspect is provided, both the reduction of the amount of dust attached to the chip and the simplification of the wiring operation to the chip are achieved. It is possible to provide an ink jet printer provided with an ink jet head capable of performing the following.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following is one embodiment of the present invention and does not limit the present invention.
[0019]
First, an inkjet printer 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a schematic diagram for explaining an outline of an inkjet printer 1 according to the present embodiment. As shown in FIG. 1, the ink jet printer 1 includes an ink jet head 2, a carriage 3, a carriage rail 4, an ink tank 5, an ink supply pipe 6, a maintenance unit 7, a moisturizing unit 13, and the like. The inkjet printer 1 forms a predetermined image on the recording medium M by discharging ink onto the predetermined recording medium M.
[0020]
The recording medium M on which an image is formed by the ink jet printer 1 passes through the recording area C in FIG. 1 and is perpendicular to the direction of arrow A in FIG. 1 (hereinafter, referred to as “main scanning direction A”). The sheet is conveyed in the direction by conveying means (not shown).
[0021]
The ink jet head 2 is provided with a nozzle for discharging ink, and forms an image on the recording medium M by discharging ink in parallel with scanning by reciprocating movement on the recording area C of the carriage 3. The ink jet head 2 is attached to the carriage 3 in a state where nozzle surfaces 21b (described later) on which nozzles for ejecting ink are arranged in parallel are arranged so as to face the recording medium M. In addition, the inkjet head 2 can be used by being vertically placed so that the nozzle discharge direction is vertically downward, or horizontally placed so that the nozzle discharge direction is horizontal.
[0022]
In the ink jet printer 1 according to the present embodiment, a total of four ink jet heads 2 are provided so that four color inks of black (K), yellow (Y), magenta (M), and cyan (C) can be ejected. It is installed on the carriage 3. As shown in FIG. 1, the four inkjet heads 2 are arranged in three rows as viewed from the sub-scanning direction, and two inkjet heads 2 are arranged in the center row so as to be adjacent to each other in the sub-scanning direction. ing.
[0023]
The configuration of the inkjet head 2 according to the present embodiment will be described later in detail with reference to FIGS.
[0024]
The carriage 3 carries the inkjet head 2 and moves in the main scanning direction A from the home position area B to the maintenance area D along the carriage rail 4. In the recording area C, the main scanning on the recording medium M is performed by the operation of the carriage 3.
[0025]
The ink tanks 5 store ink to be supplied to the inkjet heads 2, and four ink tanks 5 are provided so as to correspond to each of the four inkjet heads 2. The ink supply pipe 6 is provided to connect the ink jet head 2 and the ink tank 5 in communication. The ink in the ink tank 5 is guided to the inkjet head 2 via the ink supply pipe 6.
[0026]
The maintenance unit 7 removes foreign matter in the inkjet head 2 by a series of maintenance operations, and restores the ink ejection state of the inkjet head 2 to a favorable state. The maintenance unit 7 is disposed in the maintenance area D, and includes a suction cap 8, a suction pump 9, an ink receiver 10, a cleaning blade 11, a waste ink tank 12, and the like.
[0027]
The suction cap 8 communicates with the waste ink tank 12 via the suction pump 9 and rises during the maintenance operation to cover the nozzle surface 21b of the inkjet head 2. Four suction caps 8 are arranged so as to cover the nozzle surface 21b of each ink jet head 2.
[0028]
The suction pump 9 includes a cylinder pump and a tube pump (not shown), and generates a suction force for sucking ink inside the inkjet head 2 together with foreign substances. By operating the suction pump 9 with the nozzle surface 21b of the inkjet head 2 covered with the suction cap 8, the ink inside the inkjet head 2 can be sucked.
[0029]
The ink receiver 10 receives ink preliminarily ejected by the inkjet head 2 after sucking the ink inside the inkjet head 2. The cleaning blade 11 removes ink adhering to the nozzle surface 21b after performing preliminary ejection by the inkjet head 2. The waste ink tank 12 functions to store the ink sucked from the inkjet head 2 by the operation of the suction pump 9 and the ink preliminarily ejected from the inkjet head 2.
[0030]
The moisturizing unit 13 is arranged in the home position area B and includes a moisturizing cap 14. The moisturizing cap 14 has a function of moisturizing the ink in the nozzles by covering the nozzle surface 21b when the inkjet head 2 is in a standby state. Four moisturizing caps 14 are provided so as to cover the nozzle surface 21b of each inkjet head 2.
[0031]
Next, the configuration of the inkjet head 2 according to the present embodiment will be described with reference to FIGS. FIG. 2 is an exploded perspective view of the ink jet head 2 according to the present embodiment, and FIG. 3 is an exploded perspective view of the ink jet head 2 shown in FIG. 2 as viewed from the rear side (the direction of arrow III in FIG. 2). FIG.
[0032]
FIG. 4 and FIG. 5 are for explaining the main part of the present invention. FIG. 4 is an enlarged perspective view showing the nozzle chip 21 constituting the ink jet head 2, and the manifolds 22a and 22b and the first flexible wiring boards 24a and 24b before being connected to the nozzle chip 21. FIG. 5 is an enlarged perspective view showing a state where the first flexible wiring boards 24a and 24b are connected to the connection terminals 21d of the nozzle chip 21 and the manifolds 22a and 22b are attached to both side surfaces of the nozzle chip 21.
[0033]
As shown in FIGS. 2 and 3, the inkjet head 2 according to the present embodiment has a housing frame 20, a nozzle chip 21, two manifolds 22a and 22b, a cap receiving plate 23, and a first flexible wiring. Boards 24a and 24b, drive circuit boards 25a and 25b, internal connectors 26a and 26b, external connectors 27, a wiring support plate 28, a second flexible wiring board 29, and a cover 30 are provided. .
[0034]
The housing frame 20 is a member integrally formed by a die casting method using aluminum as a material. The housing frame 20 includes a base frame 20a and a base frame 20a that house the nozzle chip 21, the manifolds 22a and 22b, and the cap receiving plate 23. The side walls 20b and 20c erected from both ends in the longitudinal direction of each of the heat sinks 20d and the connector support 20e formed so as to bridge the side walls 20b and 20c, respectively, and the inside of the side walls 20b and 20c respectively. It has the formed nozzle tip holding portions 20f, 20g, and the like.
[0035]
The manifolds 22a and 22b and the cap receiving plate 23 are fixed to the base frame portion 20a by an adhesive. Both ends of the upper end 21c of the nozzle tip 21 are held by the nozzle tip holding portions 20f and 20g, respectively. The drive circuit boards 25a and 25b are joined to the heat sink 20d. The connector support portion 20e supports the external connector 27.
[0036]
Three fulcrum contact portions 20h, 20i, and 20j and two bolt insertion holes 20k and 201 are provided on the outer periphery of the base end frame portion 20a. The three fulcrum contact portions 20h, 20i, and 20j are portions that come into contact with and are supported by three fulcrums on the carriage 3 side when positioning the inkjet head 2 with respect to the carriage 3. After such positioning, bolts for fixing the inkjet head 2 to the carriage 3 are inserted into the bolt insertion holes 20k and 20l.
[0037]
A flow path connector 20m for introducing ink from the outside is formed in the housing frame 20, and the flow path connector 20m is connected to an ink flow path in a flow path forming portion 20n provided on the side wall 20c. Communicating. The ink flow paths in the flow path forming section 20n are connected to the ink flow paths formed in each of the manifolds 22a and 22b. The ink that has reached the ink flow path of each of the manifolds 22a and 22b via the flow path connector 20m and the ink flow path in the flow path forming section 20n is further introduced into each nozzle of the nozzle chip 21.
[0038]
Here, the nozzle chip 21, the manifolds 22a and 22b, and the first flexible wiring boards 24a and 24b, which constitute the main part of the present invention, will be described with reference to FIGS.
[0039]
The nozzle tip 21 is a tip in the present invention, and is a thin plate-shaped member provided with a plurality of nozzles at its lower end 21a. On the end surface (hereinafter, referred to as “nozzle surface”) 21b of the lower end portion 21a of the nozzle tip 21, a nozzle serving as an ink discharge port is provided in a direction indicated by an arrow E in FIG. It is formed continuously. Hereinafter, a row of nozzles formed continuously in the nozzle arrangement direction E will be referred to as a “nozzle row”. The ink jet head 2 has two nozzle rows.
[0040]
As shown in FIG. 4, the nozzle tip 21 has a long external shape in the nozzle arrangement direction E, and is mounted on the carriage 3 so that the nozzle arrangement direction E and the main scanning direction A are orthogonal. . On the side surface near the upper end 21c of the nozzle chip 21, connection terminals 21d for connecting the first flexible wiring boards 24a and 24b, respectively, to be described later, are provided.
[0041]
Manifolds 22a and 22b are attached to side portions of the nozzle tip 21, respectively. The manifolds 22a and 22b branch the ink supplied from the outside through the flow path connector 20m of the housing frame 20 and the ink flow path in the flow path forming section 20n to the respective nozzles of the nozzle chip 21 for branching. Acts as a tube.
[0042]
As shown in FIG. 4, the manifolds 22a and 22b are provided with flow pipes 22aA and 22bA that communicate with the ink flow paths in the flow path forming section 20n. The ink introduced via the ink flow path in the flow path forming section 20n is guided into the manifolds 22a and 22b by the flow path pipes 22aA and 22bA.
[0043]
Filter installation parts a1 and a2 are provided on the side surfaces of the nozzle tips 21 of the manifolds 22a and 22b. A filter a3 is attached to the filter installation part a1, and a filter a4 is attached to the filter installation part a2. The filters a2 and a4 are preferably attached to the corresponding filter installation sections a1 and a2 by thermocompression bonding or bonding. FIG. 3 shows the filter installation part a1 and FIG. 2 shows the filter installation part a2.
[0044]
The cap receiving plate 23 is a member attached to the lower ends of the nozzle tip 21 and the manifolds 22a and 22b, and receives the suction cap 8 and the moisturizing cap 14 and comes into close contact therewith. When the cap receiving plate 23 is attached to the lower ends of the nozzle tip 21 and the manifolds 22a and 22b, the nozzle surface 21b is exposed through the opening 23a provided in the cap receiving plate 23.
[0045]
The first flexible wiring boards 24a and 24b are connected to the connection terminals 21d of the nozzle chip 21 to electrically connect the driving circuit board 25a and the like to the nozzle chip 21. The first flexible wiring boards 24a, 24b are connected to drive circuit boards 25a, 25b, which will be described later, and are electrically connected to the outside via internal connectors 26a, 26b, external connectors 27, and the like.
[0046]
Here, the relationship between the uppermost end positions of the manifolds 22a and 22b and the positions of the connection terminals 21d of the nozzles 21 and the connection portions between the first flexible wiring boards 24a and 24b will be described with reference to FIG.
[0047]
In a state where the manifolds 22a and 22b are attached to the side portions of the nozzle tip 21, as shown in FIG. 5, the flat portions 22aB and 22bB form the uppermost end surfaces of the manifolds 22a and 22b. The portion in the vicinity of the portion 21c is in a state of protruding above the flat portions 22aB and 22bB. The position of the connection terminal 21d formed on the side surface near the upper end 21c of the nozzle tip 21 is disposed above the flat portions 22aB and 22bB of the manifolds 22a and 22b. The flexible wiring boards 24a and 24b are connected.
[0048]
That is, the position of the connection portion between the connection terminal 21d of the nozzle chip 21 and the first flexible wiring board 24a, 24b is disposed above the uppermost end position of the manifolds 22a, 22b mounted on both side surfaces of the nozzle chip 21. ing.
[0049]
For this reason, after attaching the manifolds 22a and 22b to the side portions of the nozzle chip 21, the operation (wiring operation) of connecting the first flexible wiring boards 24a and 24b to the connection terminals 21d of the nozzle chip 21 can be performed. The wiring work becomes extremely easy.
[0050]
Although not shown, a minute slit through which ink is supplied is provided on a side portion of the nozzle chip 21, and if a large amount of dust adheres to the slit, the ink ejection capability of the inkjet head 2 is reduced. Is not preferred. In the inkjet head 2 according to the present embodiment, it is possible to connect the first flexible wiring boards 24a and 24b to the connection terminals 21d of the nozzle chip 21 in a state where the manifolds 22a and 22b are attached to the side portions of the nozzle chip 21. Therefore, it is possible to prevent a large amount of dust from adhering to the slit on the side of the nozzle tip 21.
[0051]
The electrical connection between the drive circuit boards 25a, 25b and the outside is made by the internal connectors 26a, 26b, the external connector 27, and the second flexible wiring board 29.
[0052]
The internal connectors 26a and 26b are mounted on the drive circuit boards 25a and 25b, respectively. The external connection terminals of the second flexible wiring board 29 are connected to the external connector 27, and a part of the second flexible wiring board 29 including the external connection terminals is attached and supported on a wiring support plate 28. . The end of the second flexible wiring board 29 is extended from the wiring support plate 28 so as to be divided into two, and internal connection terminals are formed at the ends thereof. These internal connection terminals are connected to the internal connectors 26a and 26b. When the inkjet head 2 is mounted, the external connector 27 is connected to a connector provided on the carriage 3.
[0053]
When the cover 30 is attached to the housing frame 20, four side surfaces and an upper end surface (a surface opposite to the nozzle surface 21b) of the head housing are configured. A connector holding opening 30a is formed on an end surface of the cover 30 that forms the upper end surface of the head housing. When the cover 30 is attached to the housing frame 20, the external connector 27 and the wiring support plate 28 are held by the connector holding openings 30a.
[0054]
Next, a method for manufacturing the inkjet head 2 according to the present embodiment will be described.
[0055]
First, an ink supply slit and a connection terminal 21d are formed on a chip having a predetermined outer shape, and the slit and the connection terminal 21d are cleaned (a chip manufacturing / cleaning step). When the nozzle plate is attached to the lower end of the chip, the nozzle chip 21 is completed. In this embodiment, the manifolds 22a and 22b are attached to the side of the chip before the nozzle plate is attached to the lower end of the chip. (Manifold mounting process). By attaching the manifolds 22a and 22b before attaching the nozzle plate, it is possible to reduce the probability that foreign matter such as dust enters the slit provided in the chip.
[0056]
Next, a nozzle plate is attached to the lower end of the chip to form a nozzle chip 21 (nozzle plate attaching step). The nozzle plate is a thin plate-shaped member in which minute holes (nozzles) are formed, and constitutes the nozzle surface 21b.
[0057]
Next, the first flexible wiring boards 22a and 22b are connected to the connection terminals 21d of the upper end 21c of the nozzle chip 21 (wiring step). In the present embodiment, the position of the connection between the connection terminal 21d of the nozzle chip 21 and the first flexible wiring boards 24a, 24b is higher than the uppermost position of the manifolds 22a, 22b attached to the nozzle chip 21. Since they are arranged, this wiring step can be performed very easily. The drive circuit boards 25a and 25b are connected to the first flexible wiring boards 22a and 22b connected to the connection terminals 21d of the nozzle chip 21, respectively.
[0058]
Next, the cap receiving plate 23 is mounted on the lower ends of the nozzle tip 21 and the manifolds 22a and 22b (cap receiving plate mounting step). Next, the integrated nozzle chip 21, the manifolds 22a and 22b, the cap receiving plate 23, the first flexible wiring boards 24a and 24b, and the drive circuit boards 25a and 25b are attached to the casing frame 20 (case attaching step). .
[0059]
At the stage after the above steps, the ink flow path composed of the flow path connector 20m of the housing frame 20, the ink flow path in the flow path forming portion 20n, and the flow path pipes 22aA and 22bA of the manifolds 22a and 22b is formed. Since it is formed, the cleaning liquid is poured from the flow path connector 20m to clean the entire formed ink flow path (ink flow path cleaning step). The cleaning liquid that has passed through the flow channel connector 20m, the ink flow channel in the flow channel forming portion 20n, and the flow channel tubes 22aA and 22bA of the manifolds 22a and 22b is discharged from one end of the flow channel tubes 22aA and 22bA.
[0060]
Subsequently, the cover 30 is attached to the housing frame 20, and the manufacture of the inkjet head 2 is completed. Thereafter, the internal connectors 26a, 26b mounted on the drive circuit boards 25a, 25b are connected to the second flexible wiring board 29, and the external connector 27 is connected to the connector of the carriage 3, so that the inkjet head 2 and the carriage 3 Are electrically connected.
[0061]
In the inkjet head 2 according to the present embodiment, the position of the connection portion between the connection terminal 21d of the nozzle chip 21 and the first flexible wiring boards 24a, 24b is set at the uppermost end of the manifolds 22a, 22b mounted on the nozzle chip 21. Since it is located above the position, after attaching the manifolds 22a, 22b to the side portions of the nozzle chip 21, the work of connecting the first flexible wiring boards 24a, 24b to the connection terminals 21d of the nozzle chip 21 (wiring work) ), And the wiring work becomes extremely easy. Further, since the wiring work can be performed with the manifolds 22a and 22b attached to the side portions of the nozzle chip 21, the amount of dust attached to the nozzle chip 21 can be significantly reduced.
[0062]
In the method of manufacturing the inkjet head 2 according to the present embodiment, the first flexible wiring boards 24a and 24b are connected to the connection terminals 21d of the nozzle chip 21 after the manifolds 22a and 22b are attached to the sides of the chip. Therefore, the amount of dust attached to the nozzle tip 21 can be significantly reduced. Further, since the position of the connection portion between the connection terminal 21d of the nozzle chip 21 and the first flexible wiring boards 24a, 24b is located above the uppermost end position of the manifolds 22a, 22b, the connection terminal of the nozzle chip 21 The connection work (wiring work) of the first flexible wiring boards 24a, 24b to 21d is extremely easy.
[0063]
When the first flexible wiring boards 24a and 24b are connected to the connection terminals 21d of the nozzle chip 21, conventional connection methods such as soldering, bonding with a conductive adhesive, and thermocompression bonding can be employed.
[0064]
【The invention's effect】
According to the first aspect of the present invention, the connection portion between the connection terminal of the chip and the wiring is disposed above the uppermost end position of the manifold mounted on the side portion of the chip. After the manifold is mounted on the chip, the work of connecting the wiring to the connection terminals of the chip (wiring work) can be performed, and the wiring work becomes extremely easy. In addition, since the wiring work can be performed with the manifold attached to the side of the chip, the amount of dust attached to the chip can be significantly reduced.
[0065]
According to the third aspect of the present invention, since the inkjet head is manufactured by connecting the wiring to the connection terminals of the chip after the manifold is mounted on the side of the chip, the amount of dust attached to the chip is significantly reduced. Can be done. In addition, since the connection position between the connection terminal of the chip and the wiring is disposed above the uppermost position of the manifold, the work of connecting the wiring to the connection terminal of the chip (wiring work) is extremely easy.
[0066]
According to the fourth aspect of the present invention, it is possible to provide an ink jet printer having an ink jet head capable of achieving both a reduction in the amount of dust attached to the chip and an easy wiring operation to the chip. it can.
[Brief description of the drawings]
FIG. 1 is a schematic diagram for explaining an outline of an inkjet printer according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view of the inkjet head according to the first embodiment of the present invention.
FIG. 3 is an exploded perspective view of the inkjet head shown in FIG. 2 when viewed from the direction of arrow III.
4 is an enlarged perspective view showing a nozzle chip constituting the ink jet head shown in FIG. 2, and a manifold and a first flexible wiring board in a state before being connected to the nozzle chip.
FIG. 5 is an enlarged perspective view showing a state where a first flexible wiring board is connected to connection terminals of the nozzle chip shown in FIG. 4 and manifolds are attached to both side surfaces of the nozzle chip.
FIG. 6 is an exploded perspective view illustrating a part of the configuration of a conventional inkjet head.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ink jet printer 2 Ink jet head 3 Carriage 4 Carriage rail 5 Ink tank 6 Ink supply pipe 7 Maintenance unit 8 Suction cap 9 Suction pump 10 Ink receiver 11 Cleaning blade 12 Waste ink tank 13 Humidification unit 14 Humidity cap 20 Housing frame (frame) Shaped member)
20a Base end frame part 20b, 20c Side wall part 20d Heat radiating plate 20e Connector support part 20f, 20g Nozzle chip holding part 20h-20j Support point contact part 20k, 20l Bolt insertion hole 20m Flow path connector 20n Flow path forming part 21 Nozzle tip 21a Lower end 21b Nozzle surface 21c Upper end 21d Connection terminals 22a, 22b Manifolds 22aA, 22bA Flow tubes 22aB, 22bB Flat portion 23 Cap receiving plate 23a Openings 24a, 24b First flexible wiring boards 25a, 25b Drive circuit boards 26a, 26b Internal connector 27 External connector 28 Wiring support plate 29 Second flexible wiring board 30 Cover 30a Connector holding opening 110 Frame 120 Nozzle chip 121 Connection terminal formation position 130 Flexible wiring board 140 Manifold 141 Upper end 142 Outlet

Claims (4)

A nozzle provided with a nozzle at a lower end thereof, a connection terminal provided at an upper end thereof, a wiring connected to the connection terminal of the chip, and a manifold attached to a side of the chip, ,
An ink jet head, wherein a position of a connection portion between the connection terminal and the wiring is disposed above an uppermost end position of the manifold. The manifold,
2. The ink jet head according to claim 1, wherein the uppermost end position is formed by a flat surface. A nozzle provided with a nozzle at a lower end thereof and a connection terminal provided at an upper end thereof, a wiring connected to the connection terminal of the chip, and a manifold mounted on a side of the chip; In a method of manufacturing an ink jet head, a position of a connection portion between a terminal and the wiring is disposed above an uppermost end position of the manifold.
A first step of mounting the manifold on a side of the chip;
A second step of connecting the wiring to the connection terminals of the chip after the first step;
A method for manufacturing an ink jet head, comprising: An inkjet printer comprising the inkjet head according to claim 1.

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