JP3308595B2 - INK JET PRINT HEAD, METHOD FOR MANUFACTURING THE SAME, AND RECORDING APPARATUS HAVING THE SAME - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized ink jet recording head detachable from an ink jet recording apparatus, a method of manufacturing the same, and an ink jet recording apparatus equipped with the same.

[0002]

2. Description of the Related Art At present, various recording methods have been developed. Among them, an ink jet recording method in which ink is ejected from an ejection port in accordance with a recording signal to perform recording can reduce the size and noise of the apparatus. Because of its simplicity, it has been widely used in recent years.

Generally, a recording head used in this ink jet recording system is detachable from a recording device for ease of maintenance. Supply of ink and supply of electric signals are performed by a tube joint and a connector contact terminal, respectively. Made by

FIG. 10 shows an example of an ink jet recording head as a related art, and particularly shows a recording head of a type in which thermal ink is used to foam ink to discharge ink droplets. FIG. 2A is a cross-sectional view thereof, and FIG. 2B is a top perspective view thereof.

[0005] On the upper surface of the support 1, a heater board 2 made of Si or the like, on which a heater for applying thermal energy to the ink is formed on the surface, and electricity transmitted from the recording apparatus main body to the heater board 2. A wiring board 3 ′ made of glass epoxy or the like for transmitting a signal is bonded, and a heater board 2
And the wiring board 3 ′ are connected by wire bonding 7.

A contact pad 4 is provided on the upper surface of the wiring board 3 'to be in contact with and electrically connected to the flexible wiring board of the printing apparatus main body.

[0007] Ink is supplied from the main body of the recording apparatus to the top plate 5 constituting the common liquid chamber and the nozzles via the ink supply member 6, and is discharged from the discharge port 8.

[0008]

However, since the ink joint portion and the connector pad portion are arranged on the same surface side of the support, slight ink leakage from the ink joint portion after the recording head is inserted and removed from the recording apparatus. There is a problem to be solved such that the connector pad portion is contaminated with ink by the ejection, and a contact failure occurs.

In recent years, further miniaturization of the device has been demanded. However, the number of connection terminals and the pad area of the contact pad are limited, and it is difficult to reduce the area of the contact pad. The area of the support of the recording head is determined by the total area of the heater board, the wire bonding part, and the contact pad part, and miniaturization is not easy.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide an ink jet recording head which is smaller and capable of performing highly reliable and stable recording.

Another object of the present invention is to provide a recording apparatus equipped with such an ink jet recording head.

[0012]

Means for Solving the Problems As a result of intensive studies to achieve the above object, the present invention has been achieved. That is, the present invention relates to one surface, the other surface on the back side of the one surface, and the other surface from the one surface.
A support that having a positioning hole communicating with a surface, said of the support provided on a surface, for recording on a recording medium by ejecting ink from a discharge port in response to a recording signal from the recording apparatus main body A substrate having an energy generating means on its surface for generating energy, and an ink passage connected to the discharge port and the energy generating means, the ink path communicating with the discharge port provided on the surface of the substrate. A top plate, an ink supply member provided on the top plate and supplying ink to the passage, one end connected to the energy generating means on the one surface of the support, and A connection terminal to be input is provided, the other end on the side opposite to the one end, and a positioning hole provided in the other end ,
A flexible wiring board that transmits the recording signal from the connection terminal to the energy generating means, wherein the flexible wiring board is bent at an edge of the support,
Position provided at the other end via a double-sided adhesive film
The flexible wiring board is positioned by the positioning hole and the positioning hole of the support, and the other end of the flexible wiring board is supported by the supporting hole.
These positioning holes are fixed to the other surface of the body.
Is also used for positioning the recording head to the recording apparatus .

Further, the present invention provides a method for manufacturing a vehicle , comprising: one surface, another surface on the back side of the one surface, and a positioning hole communicating from the one surface to the other surface.
A support for chromatic, said the support provided on a surface, the energy generating means for generating energy for recording on a recording medium by ejecting ink from a discharge port in response to a recording signal from the recording apparatus main body A substrate having a surface, a top plate joined to the surface of the substrate and provided with an ink passage arranged in correspondence with the discharge port and the energy generating means and communicating with the discharge port, An ink supply member provided to supply ink to the passage, an end connected to the energy generating means on the one surface of the support, and a connection terminal to which the recording signal is input;
The other end opposite to the one end, and
Which had a positioning hole, anda flexible printed circuit board for transmitting the recording signal to said energy generating means from said connecting terminal, and the positioning hole of the support
Record the positioning holes of the flexible wiring board
A method for manufacturing an ink jet recording head which is used as a positioning hole for a recording device of a head, wherein a double-sided adhesive film is attached to the other surface of the support, and the flexible wiring board is bent at an edge of the support, through a double-sided adhesive film positioned by said positioning hole of the support and positioning holes provided in said other end, said flexible
A method for manufacturing an ink jet recording head, characterized in that the other end of the shivable wiring board is fixed to the other surface of the support .

Further, according to the present invention, at least a recording head having the above-described structure provided with an ink ejection port for ejecting ink facing a recording surface of a recording medium, and a member for mounting the recording head are provided. For mounting the recording head.
The positioning member of the ink jet recording head is
An ink jet recording apparatus characterized by have a locating pin which engages in order hole.

[0015]

According to the present invention, a flexible wiring board is used as a wiring means for transmitting a signal from the recording apparatus to the heater board, and a contact pad section for making an electrical connection with the recording apparatus and a heater board mounting section are supported. By arranging them on different surfaces of the body, the area occupied by the support with respect to the device body can be reduced.

[0016]

【Example】

 Embodiment 1 Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic sectional view for explaining the overall configuration of an ink jet recording head according to the present invention. A heater for applying thermal energy to ink is formed on the upper surface of a support 1 made of an aluminum plate or the like. A heater board 2 made of a Si substrate or the like as a base material, and a reinforcing plate 301 made of a glass epoxy or the like is joined to a back surface made of a polyimide that transmits an electric signal sent from the recording apparatus main body to the heater board 2. The lower part of the wire bonding of the flexible wiring board 3 is bonded.

The support 1 is provided with a positioning hole 9. The portions of the flexible wiring board 3 protruding from the support are provided with a contact pad portion 4 with the recording apparatus main body, a reinforcing plate 302, and a positioning hole 10. Is provided.

Next, the portion of the flexible wiring board 3 that protrudes from the ink supply member 6 is bent 180 degrees to
As shown in FIG. 2, the contact pad portion 4 is adhered so as to be arranged on the back surface of the support 1.

Heater board 2 and flexible wiring board 3
Are connected by wire bonding 7, and the contact pad portions 4 of the flexible wiring substrate 12 of the printing apparatus main body are connected by the contact pad portions 4 of the flexible wiring substrate 3.
And an electrical signal is supplied.

Ink is supplied from an ink supply unit or an ink tank arranged in the main body of the recording apparatus via an ink supply member 6 to a common liquid chamber and a discharge port 8 formed by joining the heater board 2 and the top plate 5. Is done.

A double-sided adhesive film 401 is provided on the back surface of the support 1.
Paste. Next, the support 1 of the flexible wiring board 3
The protruding portion is bent 180 degrees, and the positioning hole 9 of the support 1 and the positioning hole 1 of the flexible wiring board 3 are formed.
0 is adhered while being positioned by a round pin of a bonding positioning jig (not shown). The heater board 2 and the flexible wiring board 3 are connected by wire bonding 7, and the contact pads 4 of the flexible wiring board 3 make contact with the contact pads 13 of the flexible wiring board 12 of the printing apparatus main body to supply an electric signal.

A flexible wiring board 12 is positioned and fixed to a carriage 11 of the printing apparatus main body by positioning pins 14.

Further, the recording head is positioned by the positioning pins 14 and the positioning holes 9 and 10 of the recording head.

In this embodiment, due to such a configuration of the head, the permanent fixing is performed simultaneously with the positioning of the flexible wiring board on the back surface of the support.

For the fixing, the double-sided adhesive film No.
5911, no. An acrylic bonding means such as 5916 (manufactured by Nitto Denko Corporation) was used.

The performance required for the bonding means includes a stable adhesive holding property at the time of bonding to a repulsive force generated by bending the flexible wiring board to the back side of the support and a chemical resistance to ink components.

From these facts, by adopting the double-sided adhesive film, the flexible printed circuit board can be bent and securely attached to the back surface of the support in a form in which the support is reduced, and the size of the recording head can be reduced. .

FIG. 3 shows a top perspective view (a), a bottom perspective view (b) and a bottom plan view (c) of the ink jet recording head thus formed.

Next, a recording apparatus equipped with the ink jet recording head of the present invention will be described with reference to the drawings.

FIG. 5 is a schematic perspective view showing an example of a recording apparatus (IJRA) in which the ink jet recording head of the present invention is mounted as an ink jet head cartridge (IJC). In the figure, a carriage HC that engages with a spiral groove 205 of a lead screw 204 that rotates via drive force transmission gears 211, 210, and 209 in conjunction with forward and reverse rotation of a drive motor 213 is a pin (not shown). Has,
It is also engaged with the slidable guide shaft 203 and reciprocates in the directions of arrows a and b. Reference numeral 202 denotes a paper pressing plate, which presses the paper (P) against the platen 200 in the carriage movement direction. Reference numerals 207 and 208 denote home position detection means for confirming the presence of the lever 206 of the carriage HC in this region by photocouplers and switching the rotation direction of the motor 213. Reference numeral 216 denotes a member that supports a cap member 222 that caps the front surface of the print head. Reference numeral 215 denotes suction means that suctions the inside of the cap, and performs suction recovery of the print head through the opening 223 in the cap. Reference numeral 217 denotes a cleaning blade, and reference numeral 219 denotes a member that allows the blade to move in the front-rear direction. These members are supported by a main body support 218. It goes without saying that a known cleaning blade can be applied instead of this form. Reference numeral 221 denotes a lever for starting suction for recovery of suction, which moves with the movement of the cam 220 engaging with the carriage HC, and the driving force from the drive motor is moved by a known transmission means such as clutch switching. Controlled.

The capping, cleaning, and suction recovery are performed so that desired operations can be performed at the corresponding positions by the action of the lead screw 204 when the carriage HC comes to the home position side area. If the desired operation is performed in any of the above, any of the present invention can be applied. Each of the above-described configurations is an excellent invention when viewed alone or in combination, and shows preferred configuration examples for the present invention.

Next, the configuration and electric circuit of an information processing apparatus incorporating such a recording apparatus will be described with reference to FIGS.

FIG. 6 is a schematic perspective view showing the appearance of an information processing device 604 incorporating the above-described recording device. In the figure, reference numeral 601 denotes a printer unit which is the above-described recording device;
Reference numeral 602 denotes a keyboard unit having keys for inputting characters, numerals, and other characters, and keys for giving various instructions, and 603, a display unit having a display.

FIG. 7 is a block diagram showing an electric circuit configuration of the information processing apparatus according to this embodiment. Referring to FIG. 5, reference numeral 501 denotes a controller that performs main control;
Performs the procedure, for example, in the form of a microcomputer C
A PU 503 is a RAM provided with an area for expanding text data and image data, a work area, and the like.
Is a ROM that stores programs and other fixed data such as font data corresponding to the above procedure, and 505 is a CP.
Printer unit 601 that created the execution cycle of U502
A timer 506 for generating a necessary timing at the time of the recording operation by the CPU 506 is an interface unit for connecting a signal from the CPU 502 to a peripheral device.

Reference numeral 507 denotes a controller of the printer unit 601; 508, a head driver for transmitting a recording signal, electric power, and the like to the head cartridge IJC;
a and b are motor drivers for transmitting signals and electric power necessary for driving the carrier motor 402a and the transport motor 402b, respectively, and 510 detects the position of the carrier HC,
For example, the carrier sensor 511 for determining whether or not the carrier HC is at the home position does not allow recording to be performed in a place other than the recording medium when the recording medium is not inserted or when the recording is completed up to the end of the page. a paper sensor to detect the presence or absence of the recording medium.

Further, reference numeral 605 denotes, for example, FDD, HDD, R
An external storage device 512 such as an AM card is an external interface for communicating with, for example, another information processing device, or for controlling a peripheral device by directly connecting to an internal bus.

Although not included in the block diagram of FIG. 7, there is another power supply section for supplying power to the above-described electric circuit, such as a rechargeable battery, a disposable dry battery, Alternatively, there is an AC power converter when the information processing apparatus main body is fixed and used.

Next, recording is performed on the recording medium by the recording device section by the above-described electric circuit configuration. The outline of the recording operation control sequence will be described below with reference to the flowchart of FIG.

In FIG. 8, a series of procedures described below are started by a recording start instruction by a recording command key on the display / operation unit of the printer body or an external recording start instruction by an external interface.

First, in step S1, it is determined whether or not the display operation unit is online. This is a measure to prevent the recording operation from starting when the printer is not ready, mainly when a recording operation start instruction is sent from the outside by communication or the like. Then, the process proceeds to the next step S2.

In step S2, whether or not the recording medium is set in the printer unit is determined based on a signal from the paper sensor 511 or the like. This is particularly true in a recording apparatus such as an ink jet printer, when printing is started without a recording medium, the ink scatters in the printer unit and contaminates the apparatus itself, or the recording medium ink or the like is wasted. This is to prevent it from being lost.

In step S2, it may be determined whether or not the pinch roller and the transport roller have been released, in addition to the presence or absence of the recording medium. This is because even if the recording medium is set, the normal conveyance of the recording medium is not performed if the pinch roller is released.
It is because you prevent this. The release of the pinch roller can be determined by, for example, providing a mechanical switch on the release lever. If it is determined that the recording medium is not set normally, the process proceeds to step S3.

In step S3, a message is issued to call attention of the operator and set the recording medium. The message may be generated by, for example, attaching a light to the display operation unit to display the message, or displaying the message by sounding a buzzer.

If it is determined in step S2 that a recording medium has been set, the process proceeds to step S4.

In step S4, a recording operation is started.
In response to an instruction from the CPU 502, the head driver 508 drives the head cartridge HC, and in synchronization with this, the motor drivers 509a and 509b drive the carrier motor 402a and the transport motor 402b, respectively.
The recording is performed while the C is moved in the main scanning direction, the recording medium is moved in the sub-scanning direction, and the recording head 1 is cleaned.

Finally, in step S5, for example, the CPU 5
02, the end of the printing operation is instructed by the signal from the printer unit 02, or the number of printing lines in one sub-scanning direction in one page is reached, and it is determined that printing cannot be performed on the printing medium any more. For example, when it is detected that the recording area of the recording medium has been completed, it is determined that the recording operation has been completed and the recording operation procedure has been completed.

As a procedure for ending the recording operation in step S6, first, the carrier is returned to the home position.
This is because a cap is provided to protect the ink ejection surface of the recording head 1 in case of turning off the power after the recording operation. Next, the recording medium is discharged by, for example, driving the transport motor 402b by a predetermined amount, or by driving the transport motor 402b until the paper sensor 510 confirms that the recording medium has been discharged. Then, the CPU 502 displays the end of recording on the display / operation unit or notifies the peripheral device through an external interface to complete the recording operation.

In this embodiment, the ink jet head cartridge has been described for convenience. However, the recording head and the ink tank can be separated from each other, and the separation or integration work can be carried out with or without the carrier. The following effects can be obtained by configuring the ink jet recording apparatus so that the ink jet recording apparatus can be operated in a state where the ink jet recording apparatus is set in a state where the ink jet recording apparatus is operated in a state where the ink jet recording apparatus is in a state where the ink jet recording apparatus is operated.

1. Since the ink tank is mounted on the carrier, a tube or the like for supplying ink is not required, and the apparatus can be downsized. If the ink runs out,
Since only the ink tank need be replaced instead of the cartridge integrated with the head, the running cost can be reduced.

2. If either the recording head or the ink tank needs to be replaced, only the one that needs to be replaced needs to be replaced, so that the economy is improved.

3. When the recording head and the ink tank are separated on the carrier by a lever or the like, the pulling speed can be controlled, and the scattering of ink from the ink supply hole or the ink supply hole can be prevented.

4. When separating the print head and ink tank on the carrier, it is not necessary to hold the print head directly with the hand, so that the vicinity of the ink discharge port of the print head is not touched by hand, preventing unnecessary contamination that adversely affects printing. be able to.

5. When the print head and ink tank are separated on the carrier, the part of the ink tank where the force is applied is specified.Therefore, it is sufficient to use a structure that can withstand that force, and the other parts can be made thin and lightweight. And increase in internal volume.

6. If the ink color needs to be replaced with a print head that can perform color printing, it can be replaced while the print head and ink tank are integrated, so that the ink color can be easily replaced without mixing colors. is there.

The present invention is particularly applicable to an ink-jet recording system which includes means for generating thermal energy as energy used for ejecting ink, wherein the thermal energy causes a change in the state of the ink. In a head and a recording apparatus, an excellent effect is provided. According to such a method, it is possible to achieve higher recording density and higher precision.

Regarding the representative configuration and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4,740,796. This method is applicable to both on-demand type and continuous type.

The recording method will be briefly described. An electrothermal transducer disposed in correspondence with a sheet or a liquid path holding a liquid (ink) corresponds to recording information and exceeds nucleate boiling. By applying at least one drive signal that gives a rapid rise in temperature, heat energy is generated in the electrothermal transducer, causing film boiling on the heat-acting surface of the recording head. As described above, since bubbles corresponding to the driving signal applied to the electrothermal converter from the liquid (ink) can be formed one-to-one, it is particularly effective for an on-demand type recording method. By discharging the liquid (ink) through the discharge port by the growth and contraction of the bubble, at least one droplet is formed. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are performed immediately and appropriately, so that the ejection of liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable. As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. Further, when the conditions described in US Pat. No. 4,313,124 relating to the temperature rise rate of the heat acting surface are adopted, more excellent recording can be performed.

The configuration of the recording head is a combination of a discharge port, a liquid flow path, and an electrothermal converter (a linear liquid flow path or a right-angled liquid flow path) as disclosed in the above-mentioned respective specifications.
U.S. Pat.No. 4,558,333 and U.S. Pat.
The configuration using the specification of Japanese Patent No. 59,600 is also included in the present invention.

In addition, JP-A-59-123670 discloses a configuration in which a common slit is used as a discharge portion of an electrothermal transducer for a plurality of electrothermal transducers, or a pressure wave of thermal energy is absorbed. The present invention is also effective as a configuration based on Japanese Patent Application Laid-Open No. 138461/1984, which discloses a configuration in which an opening corresponding to a discharge section is disclosed.

Further, as a recording head in which the present invention is effectively used, there is a full-line type recording head having a length corresponding to the maximum width of a recording medium that can be recorded by a recording apparatus. The full line head may be a full line configuration by combining a plurality of recording heads as disclosed in the above specification, or may be a single full line recording head formed integrally.

In addition, the print head is replaceable with a print head of a replaceable chip type, which can be electrically connected to the main body of the apparatus or supplied with ink from the main body of the apparatus, or is integrated with the print head itself. The present invention is also effective when a cartridge-type recording head provided in a fixed manner is used.

Further, it is preferable to add recovery means for the printhead, preliminary auxiliary means, and the like to the recording apparatus of the present invention since the recording apparatus of the present invention can be further stabilized. is there. If you list these specifically,
A capping unit, a cleaning unit, a pressurizing or suctioning unit, a preheating unit using an electrothermal transducer or another heating element, or a combination of these, or a preparatory unit that performs a different ejection from recording to the recording head It is also effective to add a means for performing the ejection mode to perform stable printing.

Further, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, and may be either a recording head formed integrally or a combination of plural recording heads. However, the present invention is extremely effective for an apparatus provided with at least one of multiple colors of different colors or full color by mixing colors.

In the above description, the ink is described as a liquid, but it is an ink that solidifies at room temperature or below, and softens or liquids at room temperature, or the ink itself is 30 ° C. to 70 ° C. In general, the temperature is adjusted within the following range to control the temperature so that the viscosity of the ink is in the stable ejection range. Therefore, it is sufficient that the ink is in a liquid state when the use recording signal is applied.

In addition, excessive temperature rise of the head and ink due to thermal energy can be prevented by using it as energy for changing the state of the ink from a solid state to a liquid state, or the ink can be left standing for the purpose of preventing ink from evaporating. It is also possible to use an ink that solidifies in the above. In any case, the property that the ink liquefies for the first time by thermal energy, such as the one in which the ink liquefies and is ejected as an ink liquid by application of the thermal energy according to the recording signal, and the one that already starts to solidify when reaching the recording medium Is also applicable to the present invention.

In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

In addition to the above, the recording apparatus of the present invention may be provided as an output terminal of an information processing device such as a word processor or a computer as described above, as an integral or separate unit, or a copying apparatus combined with a scanner or the like. Alternatively, it may take the form of a facsimile apparatus having a transmission / reception function.

Example 2 In Example 1, a double-layered adhesive film having a single-layer structure was used. In consideration of mass production in a mounting mode, a tape adapted to the area of the flexible wiring board on the backside fixed side was used. It has a shape.

In the processing of the adhesive film tape, the adhesive layer is bonded to a release paper serving as a base. The area of the bonded portion of the adhesive film layer is punched out with a press, the portion other than the adhesive surface is removed, and the adhesive film layer is removed with the release paper. It is wound in a roll shape so as to be sandwiched in the middle.

The problem in producing this tape is that when the adhesive film is punched out, both adhesive layers adhere to each other in the cross section of the part used as the adhesive tape and the part to be eliminated, and the adhesive layer at the part to be eliminated is removed. In some cases, the adhesive layer around the area where the adhesive is used is pulled when the adhesive layer is removed, so that the effective adhesive area may not be maintained.

As a measure for improving the structure of the adhesive film, as an intermediate layer in the adhesive layer, a base material of another member, for example, an alkali-resistant polyimide material which is not affected by ink components (for example, registered trademark "UPILEX", Ube Industries, Ltd.) And a three-layered deformation type in which the adhesive film material used in Example 1 is disposed above and below it. FIG. 4 shows a schematic sectional view of the film having the three-layer structure. In the figure, 30a and 30b are release papers, 29a and 29b are adhesive layers,
28 indicates an intermediate layer.

By using the adhesive film having such a structure, the press workability in the manufacturing process is improved,
In addition, reliability is also improved in mounting at the time of production, which leads to cost reduction.

Embodiment 3 In order to further reduce the size of the recording head, an example will be described in which the bonding position of the flexible wiring substrate to be attached to the back surface of the support is brought closer to the vicinity of the ejection port of the recording head.

As shown in FIG. 9, when the position where the flexible wiring board 3 is adhered to the back surface of the support is brought close to the vicinity of the ejection port of the recording head, the ink leaking from the ink ejection port 8 slightly leaks. It is conceivable that the particles adhere to the end face of the substrate. When the ink used for the ink jet recording head adheres to the end surface, the flexible wiring board 3 is attacked by a solvent such as alcohol contained in the ink, or the adhesive strength between the flexible wiring board 3 and the reinforcing plate 301 is reduced, and the flexible wiring board 3 is removed. May peel off.

In this embodiment, in order to eliminate such anxiety and further downsize the recording head, the flexible wiring board is synthesized by polycondensation of biphenyltetracarboxylic dianhydride and diamine on the substrate. A phenol nitrile rubber-based adhesive was used for joining the polyimide film to the reinforcing plate separately or in combination with the polyimide film.

As the polyimide film synthesized by polycondensation of biphenyltetracarboxylic dianhydride and diamine, for example, commercially available products such as registered trademark “UPILEX” (manufactured by Ube Industries, Ltd.) can be used. This film has higher hardness than conventional polyimide film,
Since it has features such as low water absorption and high heat resistance, the reliability of wire bonding is also enhanced.

The phenol nitrile rubber-based adhesive has better chemical resistance and higher heat resistance than ordinary acrylic adhesives, so that the ink resistance and reliability of the ink jet recording head can be further improved.

With the above configuration, further miniaturization can be achieved.

[0080]

According to the present invention, the connectivity of a wiring board for transmitting an electric signal from the recording apparatus main body to the head is very important.
Since a uniform contact pressure, high holding property, heat resistance, and ink resistance are all satisfied in fixing the flexible wiring board, the recording head can be downsized by incorporating the double-sided adhesive film of the present invention. .

Further, since the contact pad portion can be arranged on the side opposite to the ink joint portion, contamination of the contact pad portion by ink can be prevented.

[0082] Further, a polyimide film synthesized by the polycondensation of biphenyl tetracarboxylic acid dianhydride and a diamine to a substrate of the flexible wiring board, a phenol nitrile rubber for bonding the Porii Mi de film and the reinforcing plate adhesion By using the agent, the ink resistance of the polyimide film and the adhesive layer of the flexible wiring board is improved, and even if the ink adheres, the flexible wiring board can be disposed close to the ink discharge port without peeling. And the size of the recording head can be further reduced.

Further, since the ink resistance of the ink jet recording head is improved, the selection range of the ink is broadened, for example, a higher alkali ink can be used than before, and higher quality recording can be performed.

Further, the polyimide film used in the present invention has characteristics such as higher hardness, lower water absorption, and higher heat resistance as compared with the conventional polyimide film.
The reliability of wire bonding also increases.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of an ink jet recording head before bonding a flexible wiring board according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the inkjet recording head after the flexible wiring board is joined in the configuration of FIG.

3A and 3B are views showing the appearance of an ink jet recording head according to an embodiment of the present invention, wherein FIG.
(B) is a bottom perspective view, and (c) is a bottom plan view.

FIG. 4 shows 3 used in one embodiment of the present invention.
It is a schematic sectional drawing of the double-sided adhesive film of a layer structure.

FIG. 5 is a schematic perspective view of a recording apparatus including an ink jet recording head according to the present invention.

FIG. 6 is a schematic perspective view of an information processing apparatus incorporating the ink jet recording apparatus according to the present invention.

FIG. 7 is a block diagram showing an electric circuit configuration of the information processing apparatus according to the present invention.

FIG. 8 is a flowchart for controlling an information processing operation of the information processing apparatus according to the present invention.

FIG. 9 is a cross-sectional view illustrating a configuration of an ink jet recording head of one embodiment according to the present invention.

FIGS. 10A and 10B show a conventional ink jet recording head, wherein FIG. 10A is a sectional view and FIG. 10B is a perspective view thereof.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 support 2 heater board 3 flexible wiring board 4 contact pad 5 top plate 6 ink supply member 7 wire bonding 8 discharge port 9 support positioning hole 10 wiring substrate positioning hole 11 recording device carriage 12 recording device flexible wiring substrate 13 recording Device flexible wiring board contact pad 14 Recording device side head positioning pin

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41J 2/05 B41J 2/16 H05K 7/14

Claims (15)

(57) [Claims] 1. The one surface, the other surface on the back side of the one surface, and the one surface
The other surface a support that having a positioning hole communicating with the of the support is provided on one surface, on a recording medium by ejecting ink from a discharge port in response to a recording signal from the recording apparatus main body from A substrate having on its surface an energy generating means for generating energy for recording; and an ink passage joined to the surface of the substrate and arranged corresponding to the discharge port and the energy generating means and communicating with the discharge port. A top plate provided with; an ink supply member provided on the top plate to supply ink to the passage; one end connected to the energy generating means on the one surface of the support; A connection terminal to which a recording signal is input is provided, and the other end on the side opposite to the one end;
A flexible wiring board having a positioning hole provided at the other end and transmitting the recording signal from the connection terminal to the energy generating means, wherein the flexible wiring board is folded at an edge of the support. bent, the other end via the double-sided adhesive film
For the positioning of the positioning hole provided with said support
Position with the holes, and
An end is fixed to the other surface of the support,
Positioning holes for positioning the printhead to the printing device
An ink jet recording head, which is also used . 2. The discharge port is arranged on one edge side of a support,
2. The ink jet recording head according to claim 1, wherein the flexible wiring board is bent at another edge of the support opposite to the one edge. 3. The ink jet recording head according to claim 1, wherein the double-sided adhesive film is made of an acrylic bonding material. 4. The ink jet recording head according to claim 3, wherein the double-sided adhesive film has a three-layer structure using another member for the intermediate layer. 5. The flexible wiring board according to claim 1, wherein the flexible wiring board is based on a polyimide film synthesized by condensation polymerization of biphenyltetracarboxylic dianhydride and diamine. Item 2. The inkjet recording head according to item 1. 6. A reinforcing plate is joined to a joint surface of the flexible wiring board with the support, and the reinforcing plate and the flexible wiring board are joined by a phenol nitrile rubber-based adhesive. Item 6. The inkjet recording head according to any one of items 1 to 5. 7. An electrothermal transducer for generating heat by applying energy to the energy generating means, causing a change in state of the ink and causing the ink to be discharged.
7. The ink jet recording head according to any one of items 1 to 6. 8. The one surface, the other surface behind the one surface, and the one surface
A support for have a positioning hole communicating with the other side the from the of the support is provided on one surface, the recording on a recording medium by ejecting ink from a discharge port in response to a recording signal from the recording apparatus main body A substrate having an energy generating means for generating energy for performing the process, and an ink passage joined to the surface of the substrate, arranged corresponding to the discharge port and the energy generating means, and communicating with the discharge port. A provided top plate, an ink supply member provided on the top plate, for supplying ink to the passage, one end connected to the energy generating means on the one surface of the support, and A connection terminal to which a signal is input is provided, the other end on the side opposite to the one end, and a positioning provided on the other end
Has a use holes, anda flexible printed circuit board for transmitting the recording signal to said energy generating means from said connecting terminal, the said positioning hole of said support Flexi
Recording the recording holes with the positioning holes of the
A method for manufacturing an ink jet recording head to be used as a positioning hole for an apparatus , wherein a double-sided adhesive film is attached to the other surface of the support, and the flexible wiring board is bent at an edge of the support,
Provided in the other end via the double-sided adhesive film
Positioning is performed by the positioning hole and the positioning hole of the support, and the other end of the flexible wiring board is
A method for manufacturing an ink jet recording head , comprising fixing the recording medium to the other surface of the support . 9. The flexible printed circuit board according to claim 8, wherein the discharge port is arranged on one edge side of the support, and the flexible wiring board is bent at another edge of the support opposite to the one edge. 3. The method for manufacturing an ink jet recording head according to item 1. 10. The method according to claim 8, wherein the double-sided adhesive film is made of an acrylic bonding material. 11. The method for manufacturing an ink jet recording head according to claim 10, wherein the double-sided adhesive film has a three-layer structure using another member as an intermediate layer. 12. The flexible wiring board according to claim 8, wherein the flexible wiring board is based on a polyimide film synthesized by condensation polymerization of biphenyltetracarboxylic dianhydride and diamine. 2. The method for manufacturing an ink jet recording head according to claim 1. 13. A flexible board is joined to a supporting surface of the flexible wiring board with a support, and the reinforcing board and the flexible wiring board are joined by a phenol nitrile rubber-based adhesive. Item 13. The method for manufacturing an ink jet recording head according to any one of Items 8 to 12. 14. The electrothermal converter according to claim 8, wherein the energy generating means is an electrothermal converter for generating heat by applying electric energy, causing a change in state of the ink, and causing the ink to be discharged. A method for manufacturing an ink jet recording head. 15. The ink jet recording head according to claim 1, further comprising: an ink ejection port for ejecting ink facing a recording surface of the recording medium.
At least a member for mounting the recording head.
The member for mounting the recording head includes the
Position to engage with the positioning hole of the ink jet recording head
Ink jet recording apparatus characterized by have a determining pin.