JP2001138520A - Recording head, method of manufacturing the same and ink jet recording apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manufacturing cost and to enable recording having a high recording grade and reliability in sealing constitution of a recording head used in an ink jet recording apparatus. SOLUTION: When the end part of the base film 25 of the wiring board in a recording head and a recording element substrate 1 are sealed, the arranging position of the electrode terminal of the wiring substrate is set at a position retreating from the end part of the base film 25 by a distance 1 and, at the time of the filling with a sealant, the filling of a seal resin 13 is performed by utilizing capillary force due to the relatively narrow gap of the groove formed by the retreat of the arranging position of an electrode. By utilizing the capillary force, a sealant relatively high in flowability and the same as the seal resin 13 applied to the periphery of the recording element substrate can be used. The seal resin 13 does not form a projected part on the recording element substrate at the time of the sealing of the end part of the base film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus, a recording head used in the apparatus, and a method of manufacturing the recording head, and more particularly to a structure for sealing ink and the like in the recording head.

The present invention relates to a general printing apparatus, a facsimile having a communication system, a facsimile having a communication system, an apparatus such as a word processor having a printing section, and an industrial application combined with various processing apparatuses. It can be applied to a recording device.

[0003]

2. Description of the Related Art The ink jet recording system is a so-called non-impact recording system in which recording is performed by discharging ink onto recording paper from ink discharge ports of a recording head. An ink jet recording apparatus employing this method has various advantages such as recording on various recording media, high-speed recording, and low noise during recording, such as a printer, a word processor, a facsimile, It is widely used as a recording mechanism in copying machines and the like. Such an inkjet recording apparatus generally includes a recording head for discharging ink and an ink supply system for supplying ink to the recording head.

[0004] A typical one of the ink jet systems is one using an electrothermal transducer. This method is
An electric heat conversion element is provided in an ink path near an ink ejection port of a recording head, and thermal energy generated by applying an electric pulse corresponding to a recording signal to the element is used to generate air bubbles in the ink. Ejects ink from the ink ejection port. Then, the ejected ink lands on a recording medium such as recording paper to form ink dots, thereby performing recording.

[0005] The basic structure of the recording head is an edge shooter type in which ink is ejected in parallel to a substrate on which, for example, an electrothermal converting element is disposed as an energy generating element. There is a side shooter type that ejects ink vertically.

FIG. 26 is a view showing a printing element substrate which is a main part of one embodiment of the above-described printing head.
Is a view of the recording element substrate as viewed from the ejection port surface side, and FIG.
(b) is a diagram showing the back side of the recording element substrate.

The recording element substrate 1 generally has a two-layer structure of an orifice plate 2 and a substrate 3, a partition (not shown) for dividing each ink path on the substrate 3, and ink on each ink path. A supply port 3A for supply and an electrothermal conversion element 3B corresponding to each ink path are provided. on the other hand,
The orifice plate 2 is provided with an ink discharge port 2A corresponding to each ink path. The printing element substrate 1 is configured by joining the substrate 3 and the orifice plate 2.

Electrodes 4 for inputting an electric signal such as a recording signal from the apparatus main body are formed at both ends of the surface of the orifice plate 2 of the recording element substrate 1. This electrode can be formed by using an existing technique such as patterning of plating and formation of a ball electrode (stud bump) by wire bonding. Input of an electric signal to this electrode is made possible by the wiring board 5 shown in FIGS. 27 (a) and 27 (b). That is, as described later with reference to FIGS. 28 and 29, the wiring substrate 5 is disposed so that the recording element substrate 1 can be seen through the window 5A. And the electrode terminals 6 of the wiring board 5 are joined by an anisotropic conductive adhesive 7 (FIG. 27 (b)), thereby enabling input and output of electric signals.

FIG. 28 is an exploded perspective view showing an assembling structure of a recording head according to a conventional example using the above-described recording element substrate and wiring board, and FIG. 29 is a perspective view showing the state after the assembly is completed. . FIG. 30 is a sectional view taken along the line JJ shown in FIG. The print heads shown in these figures have three print element substrates, and each print element substrate is, for example, cyan (C) or magenta.
(M) and yellow (Y) ink.

As shown in FIG. 28, each of the recording element substrates 1a, 1b, and 1c is provided with a supply port 8a, 8
Corresponding to the parts provided with b and 8c, they are adhered and fixed by adhesive resins 10a, 10b and 10c so as to cover them. In addition, each of the wiring boards 5a, 5
b and 5c are the corresponding printing element substrates 1 as described above.
a, 1b, and 1c are connected to each other by heating and pressing with an anisotropic conductive adhesive via the respective electrodes and electrode terminals. At the same time, the wiring boards 5a, 5b, 5c
It is adhesively fixed to the support member 9 by 1a, 11b, 11c. Further, as shown in FIG. 29, a wiring integrated board 12 that integrally handles supply of electric signals to the wiring boards 5a, 5b, and 5c is adhered and fixed to the side surface of the support member 9. When the recording head is mounted on the carriage, the wiring integrated substrate is connected to a wiring substrate provided on the carriage, so that an electric signal can be supplied from the apparatus main body to the recording head. In addition, as for the method of assembling such an ink jet recording head, see, for example,
-44418.

In assembling the recording head described above,
Sealing using a sealant is performed in order to protect mainly electric wiring portions of the recording head from ink and the like.

As shown in FIGS. 29 and 30, the sealing resins 13a and 13a are provided around the recording element substrates 1a, 1b and 1c, that is, outside the outer periphery of each recording element substrate.
3b and 13c are filled. Thereby, the wiring board 5
a, 5b, and 5c, and the electrode terminals (see FIG. 27A) on the back surface of the wiring substrate are sealed, and minute ink droplets scattered with ink ejection or ink droplets rebounding from recording paper. And the like are prevented from coming into contact with them, thereby preventing corrosion and the like caused by the ink.

At both ends of the openings of the wiring boards 5a, 5b, 5c in the longitudinal direction, sealing resin 14a, 14b, 14c is provided between the end of the wiring board and the ink ejection port surface of the recording element substrate. Is filled. This allows
It is possible to prevent the end surface of the electrode terminal 6A of the wiring board from coming into contact with the ink and being corroded by the ink.

[0014]

However, the above-described structure for sealing the conventional ink jet head has several problems in terms of the manufacturing cost, the function of the recording head, and the like.

(1) Of the two types of sealing resins described above, the sealing resins 13a, 13b, and 13c are used to fill a narrow region surrounded by three types of members, that is, a recording element substrate, a support member, and a wiring substrate. Therefore, it is desirable that the material has a relatively low viscosity and a high fluidity. On the other hand, the sealing resins 14a, 14b, and 14c do not need fluidity as described above because they are filled in a relatively shallow portion between the discharge port surface and the wiring substrate in the recording element substrate. Since it is not desirable that the resin is spread more than necessary on the ejection port surface by applying the resin, a material having a relatively high viscosity is desirable. As described above, since it is necessary to use two types of materials as the sealing material, there is a problem that the manufacturing cost of the recording head is disadvantageous.

(2) The sealing resins 14a, 14b, 14
c is applied so as to cover the discharge port surface of the recording element substrate from the front surface side of the wiring board when filling, but since a material having a high viscosity is used as described above, 0.1. In many cases, a protrusion having a height of about 2 mm to 0.5 mm is formed. The projections cause the distance between the recording head and the recording paper to be set large in the recording apparatus. As a result, the ink landing accuracy of the recording apparatus cannot be increased so much, and the improvement of the recording quality cannot be expected. There are also problems.

(3) Further, as a part of the ejection recovery process,
When cleaning is performed by wiping the ejection port surface of the recording head with a rubber blade or the like to remove ink droplets or the like attached to the ejection port surface, if there is a convex portion made of the sealing resin as described above, the portion or its vicinity However, there is a problem that the cleaning effect is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. It is an object of the present invention to reduce the manufacturing cost, the recording quality, and the reliability of the recording head sealing structure. An object of the present invention is to provide an ink jet recording apparatus, a recording head, and a method of manufacturing a recording head which can perform high recording.

[0019]

According to the present invention, there is provided:
A recording head for ejecting ink from the ink ejection port, having an energy ejection element and an electrode for generating energy used for ejecting the ink, and A recording element substrate that generates energy when an electric signal is supplied to the energy generating element; and an electrode terminal. The electric signal is supplied to the energy generating element by connecting the electrode terminal to an electrode of the recording element substrate. Wherein the electrode terminals of the wiring board are connected to the electrodes of the printing element substrate, and the ends of the wiring board that define an area where the wiring board and the printing element substrate overlap each other. Between the recording element substrate and the wiring board in the overlapping area, and the wiring board disposed at a position retracted from the portion into the area. And a sealing portion agent is characterized in that comprises a.

Further, in a method of manufacturing a recording head for ejecting ink from the ink ejection port, the apparatus includes an energy generating element and an electrode for generating energy used for ejecting the ink. Then, a recording element substrate that generates energy by supplying an electric signal to the energy generating element via the electrode is prepared, and has an electrode terminal. The electrode terminal is connected to the electrode of the recording element substrate. A wiring board for supplying an electric signal to the energy generating element, wherein the electrode terminals of the wiring board are connected to the electrodes of the recording element board so that the wiring board and the recording element board are separated from each other. Prepare a wiring board disposed at a position retracted into the area from the end of the wiring board that defines the overlapping area, in the overlapping area, Filling sealing portion agent between the recording element substrate and the wiring board, characterized in that comprising the step.

Further, in an ink jet recording apparatus having an ink discharge port and performing recording by discharging ink onto a recording medium using a recording head for discharging ink from the ink discharge port, the recording head is configured to discharge the ink. A recording element substrate that has an energy generating element and an electrode that generates energy used for discharging, and a recording element substrate that generates energy by supplying an electric signal to the energy generating element through the electrode; and an electrode terminal. A wiring board for supplying an electric signal to the energy generating element by connecting the electrode terminal and the electrode of the recording element substrate, wherein the electrode terminal of the wiring board is In a state where the wiring board and the recording element substrate overlap each other in a state where the wiring board and the recording element substrate are connected to each other from the end of the wiring board, To a wiring board disposed in the retracted to the inner position, the overlapping area, and a sealing portion agent charged between the recording element substrate and the wiring board, characterized in that comprises a.

According to the above arrangement, when the electrical connection between the recording element substrate and the wiring substrate is sealed with ink or the like, the electrode terminals provided on the wiring substrate are replaced with the wiring substrate and the recording element substrate. Is provided at a position recessed inward of the overlapping region for the electrical connection, and the groove formed by this recess is filled with the sealing agent for sealing, so that the capillary force is applied to the relatively narrow groove. Utilization can be used to fill the sealant. Thereby, a relatively high fluidity can be used as the sealant, and the region filled with the sealant can be accommodated in the overlap.

[0023]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a recording apparatus according to an embodiment of the present invention.

In the following description, a basic configuration of a printer will be described as an embodiment of a recording apparatus using an ink jet recording method.

[Apparatus Main Body] FIGS. 1 and 2 show a schematic configuration of a printer using an ink jet recording system. In FIG. 1, an apparatus main body M1000 forming the outer shell of the printer in this embodiment includes a lower case M1001, an upper case M
1002, access cover M1003 and discharge tray M
1004, and a chassis M3019 (see FIG. 2) housed in the exterior member.

The chassis M3019 is composed of a plurality of plate-like metal members having a predetermined rigidity, forms a skeleton of a recording apparatus, and holds each recording operation mechanism described later. Further, the lower case M1001 forms a substantially lower half of the apparatus main body M1000, and the upper case M1002 forms a substantially upper half of the apparatus upper main body M1000. It has a hollow body structure having an accommodating space, and an opening is formed in each of an upper surface portion and a front surface portion thereof.

Further, one end of the discharge tray M1004 is rotatably held by the lower case M1001, so that the opening formed on the front surface of the lower case M1001 can be opened and closed by the rotation. For this reason, when performing the recording operation, the discharge tray M100
By rotating the opening 4 to the front side to open the opening, the recording sheets can be discharged from here, and the discharged recording sheets P can be sequentially stacked.
Also, the paper discharge tray M1004 has two auxiliary trays M.
1004a and M1004b are accommodated, and the tray support area can be expanded or reduced in three stages by pulling out each tray as needed.

One end of the access cover M1003 is rotatably held by the upper case M1002 so that an opening formed on the upper surface can be opened and closed. When the access cover M1003 is opened, the inside of the main body is opened. The stored recording head cartridge H1000 or ink tank H1900 can be replaced. Although not particularly shown here, the access cover M10
When the cover 03 is opened and closed, a projection formed on the back surface rotates the cover opening / closing lever, and the open / closed state of the access cover can be detected by detecting the rotation position of the lever with a microswitch or the like. It has become.

A power key E0018 and a resume key E0019 are provided on the rear upper surface of the upper case M1002.
Is provided so as to be pressed, and an LED E0020 is provided. When the power key E0018 is pressed, L
The ED E0020 lights up to notify the operator that recording is possible. LED E0
020 changes the blinking method and color, and sets the buzzer E0.
Various display functions, such as notifying an operator of a printer trouble or the like by leveling 021 (FIG. 7), are provided.
When the trouble or the like is solved, the recording is restarted by pressing the resume key E0019.

[Printing Operation Mechanism] Next, the printing operation mechanism according to the present embodiment, which is housed and held in the apparatus main body M1000 of the printer, will be described.

The recording operation mechanism in this embodiment includes an automatic feeding unit M3022 for automatically feeding the recording sheet P into the apparatus main body, and a recording sheet P sent one by one from the automatic feeding unit. A transport unit M3029 that guides a recording sheet P from a recording position to a discharge unit M3030 while guiding the recording sheet P to a desired recording position, a recording unit that performs desired recording on the recording sheet P transported to the transport unit M3029, And a recovery unit (M5000) that performs recovery processing for the same.

(Recording Unit) Here, the recording unit will be described.

A carriage M4001 movably supported by the carriage shaft M4021, and a head tank H detachably mounted on the carriage M4001.
It consists of 1000.

Recording Head Cartridge First, the recording head cartridge will be described with reference to FIGS.
It will be described based on.

As shown in FIG. 3, the recording head cartridge H1000 of this embodiment includes an ink tank H1900 for storing ink and an ink tank H190.
A recording head H1001 for ejecting ink supplied from nozzles 0 in accordance with the recording information, wherein the recording head H1001 employs a so-called cartridge system which is removably mounted on a carriage M4001 described later. It has become.

The recording head cartridge H10 shown here
In FIG. 4, in order to enable photographic high-quality color recording, for example, ink tanks for each color of black, light cyan, light magenta, cyan, magenta and yellow are prepared as ink tanks. As shown, each is detachable from the recording head H1001.

As shown in an exploded perspective view of FIG. 5, the recording head H1001 has a recording element substrate H110.
0, first plate H1200, electric wiring board H130
0, second plate H1400, tank holder H15
00, channel forming member H1600, filter H170
0, a seal rubber H1800.

On the printing element substrate H1100, a plurality of printing elements for ejecting ink to one side of the Si substrate and electric wiring of Al or the like for supplying power to each printing element are formed by a film forming technique. A plurality of ink flow paths and a plurality of ejection ports H1100T corresponding to the recording elements are formed by photolithography, and an ink supply port for supplying ink to the plurality of ink flow paths is formed to open on the back surface. Have been. Further, the recording element substrate H110
0 is adhesively fixed to the first plate H1200,
Here, an ink supply port H1201 for supplying ink to the recording element substrate H1100 is formed.
Further, a second plate H1400 having an opening is bonded and fixed to the first plate H1200, and the second plate H1400 is connected to the electric wiring board H130.
0 and the printing element substrate H1100 are held so that the electrical wiring substrate H1300 is electrically connected. The electric wiring substrate H1300 applies an electric signal for discharging ink to the recording element substrate H1100.
It has an electric wiring corresponding to the printing element substrate H1100, and an external signal input terminal H1301 located at the end of the electric wiring for receiving an electric signal from the main body. The external signal input terminal H1301 is described later. Tank holder H
It is positioned and fixed on the back side of the 1500.

On the other hand, a flow path forming member H1600 is ultrasonically welded to a tank holder H1500 for detachably holding the ink tank H1900.
An ink flow path H1501 extending from 900 to the first plate H1200 is formed. Also, the ink tank H19
A filter H1700 is provided at the ink tank side end of the ink flow path H1501 that engages with 00, so that dust can be prevented from entering from the outside. In addition, a seal rubber H1800 is attached to an engagement portion with the ink tank H1900, so that evaporation of ink from the engagement portion can be prevented.

Further, as described above, the tank holder H1
500, flow path forming member H1600, filter H170
And a tank element comprising a recording element substrate H1100, a first plate H1200, an electric wiring substrate H1300, and a second plate H1400, which are joined together by bonding or the like. This constitutes the recording head H1001.

The carriage will now be described the carriage M4001 on the basis of FIG.

As shown, the carriage M4001 is engaged with the carriage M4001 and
A carriage cover M4002 for guiding the recording head H0 to a position where the carriage M4001 is mounted;
Head H10 engaged with the tank holder H1500
And a head set lever M4007 that presses the 00 to a predetermined mounting position. That is, the head set lever M4007 is
01 is provided rotatably with respect to the head set lever shaft, and a head set plate (not shown) is provided at an engagement portion with the print head H1000 via a spring. And is mounted on the carriage M4001 while pressing.

The recording head H of the carriage M4001
A contact flexible printed cable (hereinafter referred to as a contact FPC) E0
011 is provided, and the contact portion on the contact FPC E0011 and the contact portion (external signal input terminal) H1301 provided on the recording head H1000 are in electrical contact with each other, so that various kinds of information for recording and reception and the recording head H1 are provided.
000 can be supplied.

Here, an elastic member such as rubber (not shown) is provided between the contact portion of the contact FPC E0011 and the carriage M4001, and the contact portion is formed by the elastic force of the elastic member and the pressing force of the headset lever spring. The secure contact with the carriage M4001 is enabled. Further, the contact FPC
E0011 is connected to a carriage substrate E0013 mounted on the back of the carriage M4001 (see FIG. 7).

[Scanner] The printer in this embodiment can be used as a reading device by replacing it with a scanner showing a recording head.

The scanner moves together with the carriage on the printer side and reads the fed document image instead of the recording medium in the sub-scanning direction. The reading operation and the document feeding operation are alternately performed. , The image information of one document is read.

FIG. 6 is a diagram showing a schematic configuration of the scanner M6000.

As shown, the scanner holder M6001
Has a box shape, and contains therein an optical system and a processing circuit necessary for reading. When the scanner M6000 is mounted on the carriage M4001, a scanner reading lens M
Reference numeral 6006 is provided, from which a document image is read. The scanner illumination lens M6005 has a light source (not shown) inside, and the light emitted from the light source irradiates the original.

A scanner cover M6003 fixed to the bottom of the scanner holder M6001 is fitted so as to shield the inside of the scanner holder M6001 from light, and a louver-shaped gripping portion provided on a side surface of the carriage M4001.
The operability of attaching / detaching to / from is improved. Scanner holder M
The outer shape of the print head 6001 is substantially the same as that of the print head H1000, and can be attached to and detached from the carriage M4001 by the same operation as the print head cartridge H1000.

The scanner holder M6001 accommodates the substrate having the processing circuit, while the scanner contact PCB connected to the substrate is provided so as to be exposed to the outside. The scanner M6000 is mounted on the carriage M4001. When attached, the scanner contact P
The CB M6004 comes into contact with the contact FPC E0011 on the carriage M4001 side to electrically connect the substrate to a control system on the main body side via the carriage M4001.

Next, an electric circuit configuration according to the embodiment of the present invention will be described. FIG. 7 is a diagram schematically showing an overall configuration of an electric circuit in this embodiment.

The electric circuit in this embodiment mainly includes a carriage board (CRPCB) E0013 and a main PC.
B (Printed Circuit Board) E0014, power supply unit E0015 and the like. Here, the power supply unit is connected to the main PCB E0014 and supplies various driving powers. Also,
The carriage substrate E0013 includes a carriage M4001.
(FIG. 2) is a printed circuit board unit, which functions as an interface for transmitting and receiving signals to and from a recording head through a contact FPC E0011, and also includes an encoder sensor E as the carriage M4001 moves.
A change in the positional relationship between the encoder scale E0005 and the encoder sensor E0004 is detected based on the pulse signal output from the 0004, and the output signal is output to the main PCB E0014 via a flexible flat cable (CRFFC) E0012.

Further, a main PCB is a printed circuit board unit for controlling the driving of each part of the ink jet recording apparatus in this embodiment. I
/ F) E0016, serial interface (serial I / F) E0017, resume key E0019, L
ED E0020, power key E0018, buzzer E00
I / O ports for 21 etc. on the board
In addition to being connected to the R motor E0001, the LF motor E0002, and the PG motor E0003 to control their driving,
Ink end sensor E0006, GAP sensor E000
8, PG sensor E0010, CRFFC E0012,
It has a connection interface with the power supply unit E0015.

FIG. 8 is a block diagram showing the internal configuration of the main PCB. In the figure, E1001 is a CPU, and this CPU E1001 has an oscillator OSC inside.
E1002 is connected to the oscillation circuit E1005 and generates a system clock by the output signal E1019. Also, RO through the control bus E1014
ME1004 and ASIC (Application Specific
Integrated Circuit) ROM connected to E1006
ASIC control, an input signal E1017 from the power key, an input signal E1016 from the resume key, and a cover detection signal E104 in accordance with the program stored in the
2. The state of the head detection signal (HSENS) E1013 is detected, and the buzzer signal (BUZ) E1018
Drives the buzzer E0021 to detect the state of the ink end detection signal (INKS) E1011 and the thermistor temperature detection signal (TH) E1012 connected to the built-in A / D converter E1003, and various other logical operations and conditions. It makes decisions and controls the drive of the inkjet recording apparatus.

Here, the head detection signal E1013 is transmitted from the print head cartridge H1000 to the flexible flat cable E0012, the carriage board E0013, and the contact flexible print cable E0011.
The ink end detection signal is an analog signal output from the ink end sensor E0006, and a thermistor temperature detection signal E10.
Reference numeral 12 denotes an analog signal from a thermistor (not shown) provided on the carriage substrate E0013.

E1008 is a CR motor driver which uses a motor power supply (VM) E1040 as a drive source and
CR motor control signal E1036 from IC E1006
Generates a CR motor drive signal E1037 according to
The R motor E0001 is driven. E1009 is LF / P
A G motor driver that uses a motor power supply E1040 as a drive source, generates an LF motor drive signal E1035 according to a pulse motor control signal (PM control signal) E1033 from the ASIC E1006, and thereby drives the LF motor and the PG motor A drive signal E1034 is generated to drive the PG motor.

E1010 is a power supply control circuit,
In accordance with a power control signal E1024 from CE1006, power supply to each sensor having a light emitting element is controlled.
Parallel I / F E0016 is ASIC E1006
I / F signal E1030 is transmitted to an externally connected parallel I / F cable E1031, and the signal of the parallel I / F cable E1031 is transmitted to an ASIC.
It transmits to E1006. Serial I / F E0017
Is the serial I / F signal E from the ASIC E1006.
1028 is transmitted to the serial I / F cable E1029 connected to the outside, and the signal from the cable E1029 is transmitted to the ASIC E1006.

On the other hand, from the power supply unit E0015, a head power supply (VH) E1039 and a motor power supply (V
M) E1040 and a logic power supply (VDD) E1041 are supplied. Also, the head power ON signal (VHON) E1022 from the ASIC E1006 and the motor power O
N signal (VMOM) E1023 is the power supply unit E001
5 to control ON / OFF of the head power supply E1039 and the motor power supply E1040, respectively. Logic power (VDD) supplied from power supply unit E0015
E1041 is supplied to various parts inside and outside the main PCB E0014 after voltage conversion as necessary.

The head power supply E1039 is connected to the main PC.
After being smoothed on BE0014, it is sent out to the flexible flat cable E0011 and used for driving the print head cartridge H1000. E1007 is a reset circuit which detects a decrease in the logic power supply voltage E1040 and outputs a reset signal to the CPU E1001 and the ASIC E1006.
Is supplied with a reset signal (RESET) E1015 to perform initialization.

The ASIC E1006 is a one-chip semiconductor integrated circuit.
It is controlled by the U E1001 and outputs the above-mentioned CR motor control signal E1036, PM control signal E1033, power control signal E1024, head power ON signal E1022, motor power ON signal E1023, etc., and outputs the parallel I / F E0016 and serial I / F. F E0017
, A PE detection signal (PES) E1025 from the PE sensor E0007, an ASF sensor E
ASF detection signal (ASFS) E102 from 0009
6. The GAP detection signal (G
APS) E1027, PG from PG sensor E0007
The state of the detection signal (PGS) E1032 is detected, and data representing the state is sent to the CPU via the control bus E1014.
E1001 and based on the input data,
The EE1001 controls the driving of the LED driving signal E1038 to blink the LEDE0020.

Further, the encoder signal (ENC) E10
20 is detected to generate a timing signal, and the printhead cartridge H100 is generated by the head control signal E1021.
The interface with 0 controls the recording operation. Here, the encoder signal (ENC) E1020 is an output signal of the CR encoder sensor E0004 input through the flexible flat cable E0012. The head control signal E1021 is transmitted to the flexible flat cable E0012 and the carriage board E001.
3 and a contact FPC E0011 to the print head H1000.

FIG. 9 is a block diagram showing the internal configuration of the ASIC E1006.

In the figure, the connection between the blocks shows only the flow of data related to the control of the head and the mechanical components such as recording data and motor control data, and the registers built in each block. Control signals and clocks related to reading and writing of the data, control signals related to DMA control, and the like are omitted to avoid complication in the drawings.

In the figure, reference numeral E2002 denotes a PLL. As shown in FIG. 9, a clock signal (CLK) E2031 output from the CPU E1001 and a PLL control signal (P
LLON) E2033 generates a clock (not shown) to be supplied to most of the ASIC E1006.

E2001 is a CPU interface (CPU I / F), and a reset signal E1015,
Soft reset signal (PDWN) E2032 and clock signal (CLK) E2 output from CPU E1001
031 and a control signal from the control bus E1014,
Control of register read / write for each block as described below, supply of a clock to some blocks, acceptance of an interrupt signal, etc. (all not shown) are performed, and an interrupt signal (IN) is sent to the CPU E1001.
T) Output E2034 to notify the occurrence of an interrupt in ASIC E1006.

E2005 is a DRAM, and as a data buffer for recording, a reception buffer E2010,
Work buffer E2011, print buffer E201
4. It has various areas such as a data buffer E2016 for development and a motor control buffer E for motor control.
2023. Further, as buffers used in the scanner operation mode, there are areas such as a scanner fetch buffer E2024, a scanner data buffer E2026, and a transmission buffer E2028 instead of the above-described recording data buffers.

The DRAM E2005 has a CP
It is also used as a work area necessary for the operation of the EU 1001. That is, E2004 is a DRAM control unit, which is provided from the CPU E1001 by the control bus to the DRAM
Access to E2005 and DMA control unit E described later
Switching from access to the DRAM E2005 from 2003 is performed to perform a read / write operation to the DRAM E2005.

The DMA control unit E2003 receives a request (not shown) from each block, and receives an address signal, a control signal (not shown), and write data (E2038, E2041, E2044, and E2044) in the case of a write operation.
2053, E2055, and E2057) are output to the RAM control unit to perform DRAM access. In the case of reading, read data (E2040, E2043, E2045, E2040) from the DRAM control unit E2004 is read.
51, E2054, E2056, E2058, E205
9) is passed to the requesting block.

E2006 is 1284 I / F, and CPU E10 via CPU I / F E2001
01, a bidirectional communication interface with an external host device (not shown) is performed through the parallel I / F E0016, and the parallel I / F E0 is used during recording.
Reception data (PIF reception data E203)
6) is transferred to the reception control unit E2008 by the DMA processing, and the DRAM E2005 is read when the scanner is read.
The data (12) stored in the transmission buffer E2028
84 transmission data (RDPIF) E2059) to the parallel I / F by DMA processing.

E2007 is a USB I / F and has a CPU
Under the control of the CPU E1001 via the I / F E2001, a bidirectional communication interface with an external host device (not shown) is performed through the serial I / F E0017, and at the time of printing, data received from the serial I / F E0017 (USB reception data E2037) ) Is transferred to the reception control unit E2008 by the DMA processing, and the transmission buffer E in the DRAM E2005 is read at the time of scanner reading.
2028 (USB transmission data (RD
USB) E2058) by DMA processing
Send to FE0017. The reception control unit E2008 includes:
1284 I / FE 2006 or USB I / FE
The received data (WDIF) E2038 from the selected I / F in 2007 is transferred to the reception buffer controller E2.
039 is written to the reception buffer write address managed. E2009 is a compression / expansion DMA, which is used for CPUI /
Under the control of the CPU E1001 via the FE2001, the reception data (raster data) stored in the reception buffer E2010 is read from the reception buffer read address managed by the reception buffer control unit E2039.
The data (RDWK) E2040 is compressed and decompressed according to the designated mode, and the recording code string (WDWK) E2
The data is written in the work buffer area as 041.

E2013 is a recording buffer transfer DMA,
CPU E1007 via CPU I / F E2001
The control reads the recording code (RDWP) E2043 on the work buffer E2011, rearranges each recording code into an address on the print buffer E2014 suitable for the data transfer order to the print head cartridge H1000, and transfers the data (WDWP E2044). I do. E2012 is a work clear DMA,
Under the control of the CPU E1001 via the PUI / FE 2001, the designated work fill data (WDWF) E2042 is repeatedly written in the area on the work buffer to which the transfer by the recording buffer transfer DMA E2015 has been completed.

E2015 is a print data expansion DMA, which is a CPU E10 via the CPU I / F E2001.
01, the recording code written rearranged on the print buffer and the data for development written on the data buffer for development E2016 are triggered by the data development timing signal E2050 from the head control unit E2018 as a trigger. Read and expanded recording data (RDHDG) E2
045 is generated, and is generated as column buffer write data (WDHDG) E2047.
Write to 17. Here, the column buffer E2017 is
An SRAM for temporarily storing transfer data (expanded print data) to the print head cartridge H1000;
The print data development DMA and the head control unit share and manage the data by a handshake signal (not shown) between the two blocks.

E2018 denotes a head control unit, which is a CPU /
Under the control of the CPU E1001 via the FE2001, the recording head cartridge H is controlled via a head control signal.
1000 or the interface with the scanner, and based on the head drive timing signal E2049 from the encoder signal processing unit E2019, the print data development D
Output data development timing signal E2050 to MA.

At the time of printing, in accordance with the head drive timing signal E2049, the development print data (RDHD) E2048 is read from the column buffer, and the data is output to the print head cartridge H1000 through the head control signal E1021. In the scanner reading mode, the capture data (WDHD) E2053 input through the head control signal E1021 is transferred to the scanner capture buffer E2 on the DRAM E2005.
No. 024. Reference numeral E2025 denotes a scanner data processing DMA, which reads the capture buffer read data (RDAV) E2054 stored in the scanner capture buffer E2024 under the control of the CPU E1001 via the CPU I / F E2001, and performs processing such as averaging. The finished data (WDAV) E2055 to the scanner data buffer E2 on the DRAM E2005.
026. E2027 is scanner data compression DM
A, CPU E1 via CPU I / F E2001
001 controls the scanner data buffer E202.
6, the processed data (RDYC) E2056 is read out and compressed, and the compressed data (WDYC) E20
57 is transferred to the transmission buffer E2028.

E2019 is an encoder signal processing unit which receives an encoder signal (ENC) and receives a signal from the CPU E1.
In addition to outputting the head drive timing signal E2049 in accordance with the mode determined by the control of 001, information relating to the position and speed of the carriage M4001 obtained from the encoder signal E1020 is stored in a register.
1001. The CPU E1001 determines various parameters in controlling the CR motor E0001 based on this information. E2020 denotes a CR motor control unit, which is a CPU via a CPU I / F E2001.
By the control of E1001, the CR motor control signal E103
6 is output.

E2022 is a sensor signal processing unit which receives detection signals output from the PG sensor E0010, the PE sensor E0007, the ASF sensor E0009, the GAP sensor E0008, etc., and according to the mode determined by the control of the CPU E1001. CPU information of CPU
E1001 and LF / PG motor controller D
The sensor detection signal E2052 is output to the MA E2021.

LF / PG motor control DMAE2021
Is the CPU E10 via the CPU I / F E2001
01, reads a pulse motor drive table (RDPM) E2051 from a motor control buffer E2023 on the DRAM E2005 and outputs a pulse motor control signal E. In addition, depending on an operation mode, the pulse motor is used as a control trigger by the sensor detection signal. Control signal E
1033 is output. Reference numeral E2030 denotes an LED control unit which controls the CPU E via the CPU I / F E2001.
Under the control of 1001, an LED drive signal E1038 is output. Further, E2029 is a port controller, and C20
A head power ON signal E1022, a motor power ON signal E1023, and a power control signal E1024 are output under the control of the CPU E1001 via the PUI / FE 2001.

Next, the operation of the ink jet recording apparatus according to the embodiment of the present invention configured as described above will be described with reference to FIG.
This will be described with reference to the flowchart of FIG.

When the device is connected to the AC power supply,
In step S1, a first initialization process of the device is performed. In this initialization process, an electric circuit system check such as a check of the ROM and RAM of the present apparatus is performed to confirm whether the present apparatus can be normally operated electrically.

Next, in step S2, the apparatus main body M100
0 power key E001 provided on the upper case M1002.
8 is turned on, and the power key E00
If the button 18 has been pressed, the process moves to the next step S3, where a second initialization process is performed.

In the second initialization processing, various drive mechanisms and a head system of the apparatus are checked. That is,
When initializing various motors and reading head information, confirm that the device can operate normally.

Next, in step S4, an event is waited. That is, the apparatus monitors command events from the external I / F, panel key events due to user operations, internal control events, and the like, and executes a process corresponding to the event when these events occur.

For example, if a print command event is received from the external I / F in step S4, the process proceeds to step S5, and if a power key event is generated by a user operation in the same step, the process proceeds to step S10. The process proceeds to step S11 when another event occurs in the same step. Here, in step S5, a print command from the external I / F is analyzed, and the designated paper type,
The paper size, print quality, paper feeding method, and the like are determined, data representing the determination result is stored in the RAM E2005 in the apparatus, and the process proceeds to step S6. Next, in step S6, sheet feeding is started by the sheet feeding method designated in step S5, the sheet is fed to a recording start position, and the process proceeds to step S7. In step S7, a recording operation is performed. In this recording operation, the recording data sent from the external I / F is temporarily stored in the recording buffer, and then stored in the CR motor E0001.
To start the movement of the carriage M4001 in the scanning direction, and supply the print data stored in the print buffer E2014 to the print head H1000 to print one line, and print one line of print data. When the recording operation is completed, the LF motor E0002 is driven, and the LF roller M3001 is rotated to feed the sheet in the sub-scanning direction.
Thereafter, the above operation is repeatedly performed, and when the recording of one page of recording data from the external I / F is completed, the process proceeds to step S8.

In step S8, the LF motor E0002
Is driven to drive the paper discharge roller M2003, and the paper feeding is repeated until it is determined that the paper is completely fed out of the apparatus. When the paper is completely discharged, the paper is completely discharged onto the paper discharge tray M1004a. Becomes

Next, in step S9, it is determined whether or not the recording operation of all the pages to be recorded has been completed. If the page to be recorded remains, the process returns to step S5. The operations from S5 to S9 are repeated,
When the recording operation of all pages to be recorded is completed, the recording operation ends, and thereafter, the process shifts to step S4 to wait for the next event.

On the other hand, in step S10, a printer termination process is performed to stop the operation of the present apparatus. That is, in order to turn off the power of various motors and heads, the state is shifted to a state where the power can be turned off, and then the power is turned off and step S4
Go to and wait for the next event.

In step S11, other event processing than the above is performed. For example, a process corresponding to a recovery command from various panel keys or an external I / F of the apparatus or a recovery event generated internally is performed. After the process is completed, the process proceeds to step S4 and waits for the next event.

Several embodiments of the configuration of sealing the recording head in the basic configuration of the printer described above will be described below. In the following description, the same elements as those described in the above basic configuration will be described with different reference numerals, but the corresponding elements will be described in the following description. Also, FIG.
Elements similar to those described in FIG. 30 to FIG. 30 are denoted by the same reference numerals, and detailed description thereof will be omitted.

(First Embodiment) FIG. 11 is a cross-sectional view showing a structure particularly for sealing in a recording head according to a first embodiment of the present invention, and FIG. 12 is a sectional view showing a recording head of the above embodiment. FIG. 13 is an exploded perspective view showing the assembly of the recording head, and FIG.
FIG. 3 is a perspective view showing the recording head after the assembly. FIG. 11 shows a cross section taken along the line AA in FIG. 14, and FIG. 12B is an enlarged view of a portion B in FIG. FIGS. 12, 13, 14 and 11 are similar to FIGS. 27 to 30 according to the above-described conventional example, respectively.
A detailed description of similar elements will be omitted.

As shown in FIGS. 13 and 14, the recording head of the present embodiment corresponds to the constitution of the recording head shown in FIG. 5 and the like with respect to the basic constitution. Recording element substrates 1a, 1b,
1c (corresponding to the printing element substrate H1100 in FIG. 5). These print element substrates are incorporated in a support member 9 of the print head (corresponding to the first plate H1200 in FIG. 5). At this time, the recording element substrates are bonded by the adhesive resins 10a, 10b, and 10c, respectively. Similarly, the wiring boards 15a, 15b, and 15c (corresponding to the electric wiring board H1300 in FIG. 5) have the adhesive resin 11 as well.
It is adhesively fixed to the support member 9 by a, 11b and 11c. Further, the wiring integrated board 12 (corresponding to the electric wiring board H1300 in FIG. 5) is fixed to the support member 9.

The recording element substrates 1a, 1
b and 1c can be obtained by the following steps.

First, a heating resistor layer, wiring, and the like are patterned on a silicon wafer by photolithography, and then, on the patterned silicon wafer, an ink path described with reference to FIG. 26 is formed. An orifice plate having partitions and discharge ports is formed of a photosensitive resin. Next, the supply port shown in FIG. 26 is similarly formed by anisotropic etching, sandblasting, or the like. Further, as shown in FIG. 26, electrodes are formed in rows at both ends of the discharge port surface of the recording element substrate by patterning plating or forming ball electrodes (stud bumps) by wire bonding or the like. . Thereafter, the outer shape is formed by cutting, whereby a recording element substrate can be obtained. The height of the electrode (bump) of this embodiment is 0.02 mm to 0.05 m.
m.

The printing element substrate 1 thus obtained
a, 1b, and 1c are supply ports 8a of the support member 9, respectively.
Adhesive resins 10a, 10b, and 10c are used to adhere and fix the portions corresponding to the locations where 8b and 8c are provided.

Next, the wiring boards 15a, 15b, 15c
Are fixed to the support member 9 so that the electrode terminals 15A are joined to the electrodes of the respective recording element substrates. At this time, the electrode terminals 15A are separated from the edges of the openings 15A as shown in FIGS. 1 = 0.05 mm to 1 mm. Then, the electrodes of each recording element substrate are connected by heat bonding using a thermosetting adhesive or an anisotropic conductive adhesive 7, and the wiring substrate 15, which is a main body thereof, is provided.
a, 15b, and 15c are adhesively fixed to the support member 9 by adhesives 11a, 11b, and 11c.

The above-mentioned wiring boards 15a, 15b, 1
In connection and bonding and fixing of the electrode 5c, as shown in FIG. 12B, the anisotropic conductive adhesive 7 is preliminarily bonded or preliminarily applied to the electrode terminal 16, but is not limited thereto. May be temporarily attached or temporarily attached. Further, as shown in FIG. 13, the adhesive resins 11a, 11b, 1
1c is preliminarily preliminarily applied or preliminarily bonded to the support member 9 side, but is not limited thereto, and the wiring substrates 15a, 15b, 15c
These adhesive resins may be temporarily applied or temporarily adhered to the side.

The wiring board of the present embodiment uses, for example, a base film having a thickness of 0.025 mm to 0.05 mm and an electrode terminal having a thickness of 0.02 mm to 0.04 mm. I have.

After the recording element substrate and the wiring substrate are bonded and fixed to the support member 9 as described above, finally, the wiring integrated substrate 12 is bonded and thermally caulked as shown in FIG. It is held and fixed to the side surface of the support member 9 while forming an electrical connection with the substrate.

After assembling the above members, the sealing member is filled. In the present embodiment, unlike the conventional example described above, only one type of sealant is used. That is,
The surroundings of the recording element substrates 1a, 1b, and 1c are filled with sealing resins 13a, 13b, and 13c having relatively high fluidity, respectively. As a result, as shown in FIGS. 11 and 15, not only the outer peripheral portion of the printing element substrate but also the lower sides of both ends where the electrode terminals of the wiring substrate are provided are sealed. That is, the electrode terminal 1 provided to be receded from the edge of the opening 16A.
6, anisotropic adhesive 7, base film 2 of wiring board 15
The sealing resin is also filled by capillarity into the groove portion having a length 1 from the edge of the opening 16A formed by 5 and 4 members on the ejection port surface of the printing element substrate. As the sealing resin, a resin having high fluidity such as an underfill agent for a flip chip used for bare chip mounting is desirable. In this case, after filling the periphery of the recording element substrate with a flip-chip underfill agent containing an epoxy resin as a main component, the temperature is reduced to 40 ° C.
At 90 ° C., the permeation is completed over the entire end surface of the electrode terminal.
For example, leave it for 3 minutes to 10 minutes, and then
Good sealing can be performed by curing at ℃.

As described above, 1 = 0.05 mm to 1.0 mm from the edge of the opening of the wiring board, the anisotropic conductive adhesive for bonding the electrode terminals of the wiring board and the electrodes of the recording element substrate. Is provided so as to provide a groove having a length of l on the opening side of the electrode terminal, thereby applying a capillary force to fill the sealing resin with a relatively high fluidity and to flow out to the other. It can be done without happening.

As a result, one kind of sealing material can be used, and the sealing step can be performed at the same time, so that the processing time and cost can be reduced as compared with the conventional example.

The sealing agent is used for a wiring board (base film).
Because it fits under the bottom and fills, there is no protrusion due to the sealant on the wiring substrate, and the distance between the recording head and recording paper can be set small, improving the recording accuracy. It can also be done. In addition, cleaning using a blade can be favorably performed.

(Second Embodiment) FIG. 16 is a cross-sectional view showing a sealing structure of a recording head according to a second embodiment of the present invention. It is. FIGS. 17A and 17B are views showing the print element substrate in the print head shown in FIG. 16 and are similar to FIG. 26 described above. FIG. 18 is a perspective view showing a state after the recording head has been assembled, and FIG.
It is an enlarged view of E section in 8.

In this embodiment, as shown in FIG. 16, 0.02 mm to 0.2 mm is set at a position corresponding to the edge of the opening of the wiring board.
A support member 18 having a height of 2 mm and having a length substantially equal to the width of the printing element substrate 17 is provided on the ejection opening surface of the printing element substrate as shown in FIG. Then, using the recording element substrate provided with such a supporting member, the sealing resin 13 is filled in the same manner as in the first embodiment. here,
The support member 18 can be easily formed by patterning a photosensitive resin or the like. Further, the same material as that for forming the partition walls and the discharge ports described above may be used and formed simultaneously with those elements.

According to the above embodiment, the recording element substrate 1
7 and the base member 25 of the wiring board
By providing 8, the end of the base film can be kept at a predetermined height or higher, so that the capillary action of the groove formed on the lower side of the base film can be stably obtained. At the same time, it is possible to more reliably prevent the filled sealant from flowing out toward the discharge port 2A on the discharge port surface of the printing element substrate.

(Third Embodiment) FIG. 20 is a diagram showing a sealing structure of a recording head according to a third embodiment of the present invention, and is a sectional view taken along line FF in FIG. 25 described later. 21 and 22 show the wiring board of the present embodiment, FIGS. 21 (a) and 21 (b) are views showing the front and back surfaces, and FIG. 22 is a view shown in FIG. 21 (b). It is an enlarged view of the G section. Further, FIG. 23 is an exploded perspective view showing an assembling process of the recording head shown in FIG. 20, FIG. 24 is a completed assembly view of the recording head, and FIG.
It is an enlarged view of a part.

This embodiment is different from the above-described embodiments, and as is apparent from FIGS. 23 and 24, the wiring substrate is provided commonly to the three printing element substrates. In this case, as shown in FIG. 20 and FIG. 25, the wiring board crosses between the printing element substrates and at a portion corresponding to between the printing element substrates and the support member on both sides, and between the members. Reinforcing terminals 21a, 21b, 21c, 2 having a width
1d is provided.

Usually, a wiring board having a structure in which a base film of a resin material and metal wiring are bonded to each other is easily deformed in an environment exposed to a high temperature such as thermocompression bonding. Further, in the configuration in which a plurality of (three) printing element substrates are arranged in the opening of one wiring board as in the present embodiment, the area of the opening is relatively large, and the degree of deformation of the wiring board due to heat compression is reduced. growing. In particular, since the portion corresponding to between the adjacent printing element substrates is a portion where the distance between the electrode terminals provided on the wiring substrate is relatively wide, the above-described deformation is also large.

From the above points, in the present embodiment, as described above, the reinforcing terminals 21 are provided on the portions of the wiring board corresponding to the portions where no members such as the recording element substrate exist.
By providing a, 21b, 21c, and 21d, deformation of the wiring board 19 due to heating and pressure bonding is suppressed. Also,
In the present embodiment, as in the above-described embodiments, the sealing agent is filled by capillary force.
It is possible to secure at least the height of the inflow portion of the sealing agent 13 filled in the end surfaces of the a, 20b, and 20c by the thickness of the reinforcing terminal, thereby performing good sealing even when the wiring board is greatly deformed. Can be.

[0109]

As described above, according to the present invention,
When the electrical connection between the recording element substrate and the wiring substrate is sealed with ink or the like, the electrode terminals provided on the wiring substrate are placed in an area where the wiring substrate and the recording element substrate overlap for the electrical connection. Since the groove formed by the retraction is provided with the sealing agent for the above-described sealing and the groove formed by the retreat is filled with the sealing agent, the relatively narrow groove is filled with the sealing agent by utilizing the capillary force. be able to. Thereby, a relatively high fluidity can be used as the sealant, and the region filled with the sealant can be accommodated in the overlap.

As a result, the same high fluidity as the sealant filled around the recording element substrate can be used for the above-mentioned electric connection portion, so that the manufacturing cost of the recording head can be reduced.

Further, since the sealant does not protrude onto the recording element substrate in sealing the electric connection portion,
It is possible to prevent the formation of the projections due to the sealant, to reduce the distance between the recording head and the recording paper, and to contribute to improving the recording accuracy. In addition, since the head cleaning due to the wiping is not hindered by the projections, good cleaning can be performed.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an external configuration of an inkjet printer according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the state shown in FIG. 1 with an exterior member removed.

FIG. 3 is a perspective view showing a state in which the recording head cartridge used in the embodiment of the present invention is assembled.

FIG. 4 is an exploded perspective view showing the recording head cartridge shown in FIG.

FIG. 5 is an exploded perspective view of the recording head shown in FIG. 4 as viewed obliquely from below.

FIG. 6 is a perspective view showing a scanner cartridge according to the embodiment of the present invention.

FIG. 7 is a block diagram schematically showing an overall configuration of an electric circuit according to the embodiment of the present invention.

FIG. 8 is a block diagram showing an internal configuration of a main PCB shown in FIG.

FIG. 9 is a block diagram showing the internal configuration of the ASIC shown in FIG.

FIG. 10 is a flowchart showing the operation of the embodiment of the present invention.

FIG. 11 is a cross-sectional view illustrating a configuration of sealing the recording head according to the first embodiment of the present invention.

FIGS. 12A and 12B are a plan view showing a front surface and a rear surface of a wiring board used in the recording head of the first embodiment, respectively, and an enlarged view of an opening thereof.

FIG. 13 is an exploded perspective view showing the assembly of the recording head of the first embodiment.

FIG. 14 is a perspective view showing the recording head of the first embodiment after assembly is completed.

15 is an enlarged view of a portion C shown in FIG.

FIG. 16 is a cross-sectional view illustrating a configuration of sealing a recording head according to a second embodiment of the present invention.

FIGS. 17A and 17B are views showing the front and back surfaces of the recording element substrate of the second embodiment, respectively.

FIG. 18 is a perspective view showing the recording head of the second embodiment after assembly is completed.

19 is an enlarged view of a portion E shown in FIG.

FIG. 20 is a sectional view illustrating a configuration of sealing a recording head according to a third embodiment of the present invention.

FIGS. 21A and 21B are plan views showing a front surface and a rear surface of a wiring board used in the recording head of the third embodiment, respectively.

22 is an enlarged view of a portion G shown in FIG.

FIG. 23 is an exploded perspective view showing the assembly of the recording head according to the third embodiment.

FIG. 24 is a perspective view showing the print head of the third embodiment after assembly is completed.

FIG. 25 is an enlarged view of a portion H shown in FIG. 24;

FIGS. 26A and 26B are diagrams showing a front surface and a back surface, respectively, of a recording element substrate according to a conventional example.

FIGS. 27A and 27B are a plan view showing a front surface and a back surface of a wiring substrate used in the above-described conventional recording head, respectively, and an enlarged view of an opening thereof.

FIG. 28 is an exploded perspective view showing the assembling of the conventional recording head.

FIG. 29 is a perspective view showing the recording head of the conventional example after assembly is completed.

FIG. 30 is a cross-sectional view showing a configuration of sealing a recording head according to the conventional example.

[Explanation of symbols]

1, 1a, 1b, 1c, 17, 17a, 17b, 17c
Recording element substrate 2 Orifice plate 2A Discharge port 3 Substrate 3A, 8, 8a, 8b, 8c Supply port 4, 4a, 4b Electrode 5, 5a, 5b, 5c, 15, 15a, 15b, 15
c, 19 Wiring board 6, 16, 20, 20a, 20b, 20c Electrode terminal 7 Anisotropic conductive adhesive 9, 18, 22 Support member 12 Wiring integrated board 13, 13a, 13b, 13c Sealing resin 14, 14a, 14b, 14c Sealing resin 21, 21a, 21b, 21c, 21d Reinforcement member M1000 Main body M1001 Lower case M1002 Upper case M1003 Access cover M1004 Eject tray M2015 Sheet adjustment lever M2003 Discharge roller M3001 LF roller M3019 Chassis M3022 Automatic feeding Unit M3029 Transport unit M3030 Ejection unit M4000 Recording unit M4001 Carriage M4002 Carriage cover M4007 Headset lever M4021 Carriage shaft M5000 Recovery unit M6000 Scanner M6001 Scanner holder M6003 Scanner cover M6004 Scanner contact PCB M6005 Scanner illumination lens M6006 Scanner reading lens 1 M6100 Storage box M6101 Storage box base M6102 Storage box cover M6103 Storage box cap M6104 Storage box spring E0001 Carriage motor E0002 LF motor E0003 PG motor E0003 EG motor E0003 Encoder scale E0006 Ink end sensor E0007 PE sensor E0008 GAP sensor (paper interval sensor) E0009 ASF sensor E0010 PG sensor E0011 Contact FPC (flexible flat cable) E0012 CRFFC (flexible flat cable) E0013 Carriage substrate E0014 In board E0015 Power supply unit E0016 Parallel I / F E0017 Serial I / F E0018 Power key E0019 Resume key E0020 LED E0021 Buzzer E0022 Cover sensor E1001 CPU E1002 OSC (Oscillator with built-in CPU) E1003 A / D (A / D converter with built-in CPU) E1004 ROM E1005 Oscillation circuit E1006 ASIC E1007 Reset circuit E1008 CR motor driver E1009 LF / PG motor driver E1010 Power control circuit E1011 INKS (ink end detection signal) E1012 TH (thermistor temperature detection signal) E1013 HSENS (head detection signal) E1015 RESET (reset signal) E1016 RESUME (reset E1017 POWER (Power key input) E1018 BUZ (Buzzer signal) E1019 Oscillation circuit output E1020 ENC (Encoder signal) E1021 Head control signal E1022 VHON (Head power ON signal) E1023 VMON (Motor power ON signal) E1024 Power control signal E1025 PES (PE detection signal) E1026 ASFS (ASF detection signal) E1027 GAPS (GAP detection signal) E0028 Serial I / F signal E1029 Serial I / F cable E1030 Parallel I / F signal E1031 Parallel I / F cable E1032 PGS (PG detection Signal) E1033 PM control signal (pulse motor control signal) E1034 PG motor drive signal E1035 LF motor drive signal E1036 CR mode E1037 CR motor drive signal E0038 LED drive signal E1039 VH (head power supply) E1040 VM (motor power supply) E1041 VDD (logic power supply) E1042 COVS (cover detection signal) E2001 CPU I / F E2002 PLL E2003 DMA control unit E2004 DRAM Control unit E2005 DRAM E2006 1284 I / F E2007 USB I / F E2008 Reception control unit E2009 Compression / decompression DMA E2010 Reception buffer E2011 Work buffer E2012 Work area DMA E2013 Recording buffer transfer DMA E2014 Print buffer E2015 Recording data expansion DMAE2016 Expansion Buffer E2017 Column buffer E2018 Head controller E2019 D Encoder signal processing unit E2020 CR motor control unit E2021 LF / PG motor control unit E2022 sensor signal processing unit E2023 motor control buffer E2020 24 scanner capture buffer E2025 scanner data processing DMA E2026 scanner data buffer E2027 scanner data compression DMA E2028 transmission buffer E2029 port control unit E2030 LED control unit E2031 CLK (clock signal) E2032 PDWM (soft control signal) E2033 PLLON (PLL control signal) E2034 INT (interrupt signal) E2036 PIF receive data E2037 USB receive data E2038 WDIF (receive data / raster data) E2039 receive buffer Control unit E2040 RDWK (Receive buffer read data /
Raster data) E2041 WDWK (work buffer write data /
Recording code) E2042 WDWF (work fill data) E2043 RDWP (work buffer read data / recording code) E2044 WDWP (rearrangement recording code) E2045 RHDDG (recording / development data) E2047 WHDDG (column buffer write data / development recording data) E2048 RDHD (column buffer read data / developed recording data) E2049 Head drive timing signal E2050 data developed timing signal E2051 RDPM (pulse motor drive table read data) E2052 sensor detection signal E2053 WDHD (captured data) E2054 RDAV (capture buffer read data) E2055 WDAV (data buffer write data /
E2056 RDYC (data buffer read data / processed data) E2057 WDYC (transmission buffer write data / compressed data) E2058 RDUSB (USB transmission data / compression data) E2059 RDPIF (1284 transmission data) H1000 recording head cartridge H1001 recording Head H1100 Recording element substrate H1100T Discharge port H1200 First plate H1201 Ink supply port H1300 Electric wiring board H1301 External signal input terminal H1400 Second plate H1500 Tank holder H1501 Ink flow path H1600 Flow path forming member H1700 Filter H1800 Seal rubber H1900 Ink tank

Claims (21)

[Claims] A recording head for ejecting ink from the ink ejection port, comprising an energy generating element for generating energy used for ejecting the ink, and an electrode; A recording element substrate that generates energy by supplying an electric signal to the energy generating element via an electrode; and an electrode terminal, wherein the energy is generated by connecting the electrode terminal to an electrode of the recording element substrate. A wiring board for supplying an electric signal to the generating element, wherein an electrode terminal of the wiring board defines an area where the wiring board and the printing element board overlap with each other in a state of being connected to an electrode of the printing element board. A wiring board disposed at a position retracted from the end of the wiring board into the area, and the recording element substrate and the wiring in the overlapping area A recording head comprising: a sealing material filled between the substrate and a substrate. 2. The recording head according to claim 1, wherein the electrode terminal is disposed so as to retreat, and the retreat distance is in a range of 0.05 mm to 1.0 mm. 3. The printing element substrate according to claim 1, wherein a support member for supporting the wiring substrate is provided at a position corresponding to an end portion of the recording element substrate that partitions the area of the wiring substrate. The recording head as described. 4. The height of the support member is 0.02 mm or more.
The recording head according to claim 3, wherein the distance is within a range of 0.2 mm. 5. The wiring substrate according to claim 1, wherein a reinforcing terminal which is set back near the same position as an electrode terminal is provided at a position corresponding to an edge of an electrical connection surface of the recording element substrate.
5. The recording head according to any one of items 4 to 4. 6. A printed circuit board having a plurality of recording element substrates, wherein the wiring board is provided with a reinforcing terminal which is longer than a width of a gap formed between the plurality of recording element substrates and which recedes near an electrode terminal. The recording head according to claim 1, wherein the recording head is provided. 7. The energy generating element has an electrothermal converting element to generate thermal energy as the energy, and the recording head generates bubbles in the ink by the thermal energy, and generates the ink by the pressure of the bubbles. The recording head according to claim 1, wherein the recording head performs ejection. 8. A method for manufacturing a recording head having an ink discharge port and discharging ink from the ink discharge port, comprising an energy generating element and an electrode for generating energy used for discharging the ink. Preparing a recording element substrate that generates energy by supplying an electric signal to the energy generation element through the electrode, having an electrode terminal, and connecting the electrode terminal to an electrode of the recording element substrate. A wiring board for supplying an electric signal to the energy generating element, wherein the electrode terminals of the wiring board are connected to the electrodes of the recording element board so that the wiring board and the recording element board are separated from each other. Preparing a wiring board disposed at a position retracted into the area from an end of the wiring board that defines the overlapping area; A method of manufacturing a recording head, comprising a step of filling a sealing agent between a recording element substrate and the wiring substrate. 9. The method according to claim 8, wherein the electrode terminal is disposed so as to retreat, and the retreat distance is in a range of 0.05 mm to 1.0 mm. . 10. The printing element substrate according to claim 8, wherein a support member for supporting the wiring substrate is provided at a position corresponding to an end portion of the recording element substrate that partitions the region of the wiring substrate. The manufacturing method of the recording head described in the above. 11. The height of the support member is 0.02 mm.
10. The method according to claim 9, wherein the distance is within a range of about 0.2 mm.
3. The method for manufacturing a recording head according to item 1. 12. The wiring substrate according to claim 8, wherein a reinforcing terminal which is set back near the same position as an electrode terminal is provided at a position corresponding to an edge of an electric connection surface of the recording element substrate. Or a method for manufacturing a recording head. 13. A printed circuit board comprising a plurality of recording element substrates, wherein the wiring board is provided with reinforcing terminals which are longer than a width of a gap formed between the plurality of recording element substrates and which recede in the vicinity of the electrode terminals. The method according to claim 8, wherein the recording head is provided. 14. The energy generating element has an electrothermal converting element to generate thermal energy as the energy, and the recording head generates bubbles in the ink by the thermal energy, and generates ink by the pressure of the bubbles. 14. The method according to claim 8, wherein the recording head is ejected. 15. An ink jet recording apparatus which has an ink ejection port and performs recording by ejecting ink onto a recording medium by using a recording head for ejecting ink from the ink ejection port, wherein the recording head comprises: It has an energy generating element and an electrode for generating energy used for discharging, and has a recording element substrate and an electrode terminal for generating energy by supplying an electric signal to the energy generating element via the electrode. A wiring board for supplying an electric signal to the energy generating element by connecting the electrode terminal to an electrode of the recording element substrate, wherein the electrode terminal of the wiring board is an electrode of the recording element substrate. From the end of the wiring board that defines an area where the wiring board and the printing element substrate overlap each other in a state where the wiring board is connected to the printing element substrate. An ink jet recording apparatus comprising: a wiring board disposed at a retracted position; and a sealing material filled between the recording element substrate and the wiring substrate in the overlapping area. . 16. The device according to claim 16, wherein the electrode terminal is disposed to be retracted.
The ink jet recording apparatus according to claim 15, wherein the retreat distance is in a range from 0.05 mm to 1.0 mm. 17. The printing element substrate according to claim 15, wherein a support member for supporting the wiring substrate is provided at a portion corresponding to an end portion of the recording element substrate that partitions the region of the wiring substrate. The inkjet recording apparatus according to any one of the preceding claims. 18. The height of the support member is 0.02 mm.
2. The method according to claim 1, wherein the distance is in a range of about 0.2 mm.
8. The ink jet recording apparatus according to 7. 19. The wiring substrate according to claim 15, wherein a reinforcing terminal that is set back near the same position as the electrode terminal is disposed at a position corresponding to an edge of the electrical connection surface of the recording element substrate. An inkjet recording apparatus according to any one of the above. 20. A printed circuit board comprising a plurality of recording element substrates, wherein the wiring board has reinforcing terminals which are longer than a width of a gap formed between the plurality of recording element substrates and which are set back near the same level as the electrode terminals. 15. The method according to claim 15, wherein
7. The ink jet recording apparatus according to 6. 21. The energy generating element has an electrothermal converting element to generate thermal energy as the energy, and the recording head generates bubbles in the ink by the thermal energy, and generates ink by the pressure of the bubbles. 21. The ink jet recording apparatus according to claim 15, wherein the ink jet recording is performed.