JPH07256892A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To provide an ink jet recorder having a low retail price capable of preventing non-ejection or defective ejection of ink ejected from a record head and performing the stable recording by a simple structure. CONSTITUTION:An ink jet recorder comprises a carriage 4 having a record head 2 and an ink tank 3, carriage conveying means 6-9, an operation member 25 that is projected from a frame 5 in the carriage conveyance direction and is brought into contact with the ink tank at a position out of a recording region to eject an ink from the record head and a control means that generates an ink election pressure after the contact.

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, and more particularly to an ink jet recording apparatus capable of preventing ejection failure or ejection failure of ink droplets and performing ejection recovery processing for stable recording.

[0002]

2. Description of the Related Art Conventionally, as a recording device for recording on a recording material (hereinafter referred to as a recording sheet) such as a sheet of paper or an OHP sheet, there has been proposed a recording device having a recording head of various recording systems. Such recording heads include a wire dot type, a heat sensitive type, a thermal transfer type, and an ink jet type.

Of these, the ink jet system is particularly
Injects ink directly toward the recording sheet,
It is attracting attention as a recording method which has advantages such as low running cost and quiet recording operation.

Further, in recent years, the ink jet recording apparatus, especially the recording head, is manufactured by the film forming technique and the micro processing technique applied to the semiconductor device, so that the recording is smaller and less expensive. The head is being realized. Along with this, it has become possible to obtain a compact and simple structure of the entire apparatus.

On the other hand, the ink jet recording apparatus having various advantages as described above is widely used as a recording apparatus for various apparatuses such as a personal computer printer, a printer-integrated personal computer, an electronic typewriter, a word processor, a facsimile, and a copying machine. It is being used. In this case, the ink jet recording apparatus is provided with a function corresponding to each of these apparatuses, a configuration corresponding to a usage mode, and the like.

[0006] In addition, in such a printer for a personal computer, a personal computer with a built-in printer, an electronic typewriter, a word processor, etc., one of the tendencies is that it is small and lightweight, portable and more inexpensive from the viewpoint of its popularity. From this point of view, it is desired that the ink jet recording apparatus used in these apparatuses be small and simple and have a low cost.

Generally, in an ink jet type recording apparatus, a recording head in which fine ejection openings are arranged is used. Therefore, when bubbles or dust are mixed in the ejection openings, or when the ink solvent evaporates, the viscosity increases. Therefore, when the ink is not ejected normally or is in a state not suitable for recording, a process (ejection recovery process) for removing the cause of ejection failure is performed. As one form of means for performing such an ejection recovery process, it is possible to cover the ejection port forming surface of the recording head (hereinafter referred to as the ink ejection port surface), and a cap that functions as an ink receiver There is a device provided with a pump for communicating and generating a suction force.

In such ejection recovery processing, ink is ejected by driving the ink ejection energy generating element in the ejection port with the cap facing the ink ejection port surface, or the ink ejection port surface is covered with the cap. In this state, the suction force of the pump is applied to suck the ink to remove the cause of the ejection failure.

In the operation of covering the ink ejection port surface with such a cap, the carriage equipped with the recording head moves to the recovery system position at the end of recording, and the cap provided to be movable back and forth at this recovery system position. This is performed by advancing the recording head and bringing it into contact with the recording head, and covering the ink ejection port surface.

[0010]

However, in the apparatus having the ejection recovery means of the type in which the suction force is applied to the ink ejection port of the recording head by the pump as described above, the apparatus becomes complicated, and as a result, There was a problem that the product price became high.

The present invention has been made in view of the above problems, and an object thereof is to prevent non-ejection or ejection failure of ink from a recording head with a simple structure, to reduce the product price and to stabilize the product. An object of the present invention is to provide an inkjet recording apparatus capable of performing the above recording.

[0012]

In order to achieve the above object, the present invention is an ink jet recording apparatus having a recording head for performing recording by ejecting ink from an ink ejection port, the recording head and the recording head. A carriage equipped with an ink tank for supplying ink to the head, a moving means for moving the carriage, and a projection provided in a moving direction of the carriage from a casing of the recording apparatus, and provided in the ink tank outside a recording area. An operating member for contacting and ejecting ink from the recording head through the ink tank, and an ink ejecting ink from the recording head for the carriage after the ink tank is brought into contact with the operating member And a control means for causing the recording head to generate an ink ejection pressure. To.

The moving means may be one driven by a carriage drive motor controlled by the control means.

As the control means, an example in which the ink ejection pressure generated in the recording head can be adjusted can be given.

Furthermore, the adjustment of the ink ejection pressure may be performed by adjusting the magnitude of drive energy applied to the carriage drive motor.

Further, the drive energy can be changed according to a change in current or voltage supplied to the carriage motor, or a pulse width.

Further, the recording head is a recording head for ejecting ink by utilizing thermal energy, and is provided with an electrothermal converter for generating thermal energy to be applied to the ink, which is applied by the electrothermal converter. It is preferable that the ink is ejected from the ejection port by utilizing the pressure change caused by the growth and contraction of the bubbles caused by the film boiling caused by the generated thermal energy.

Furthermore, according to the present invention, there is provided a copying machine including at least an input unit and a control unit.

Further, according to the present invention, there is provided a facsimile apparatus having at least an input section, a control section and a facsimile transmission / reception section.

Furthermore, the present invention provides a word processor having an input section, a control section and a display section.

The present invention also provides a computer including at least an input unit, a control unit, and a display unit.

[0022]

According to the present invention, the ink tank mounted on the carriage is moved together with the recording head by the moving means and brought into contact with the operating member projecting from the casing of the recording apparatus. Is applied to generate an ink ejection pressure in the recording head and perform ejection recovery processing to prevent ink droplet ejection failure or ejection failure, and to achieve stable printing at a low product cost with a simple configuration. It is possible to provide an ink jet recording device that can be used.

[0023]

Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 shows an example of an ink jet recording apparatus according to an embodiment of the present invention. In FIG. 1, a carriage 1 is equipped with a head cartridge 4 in which a recording head 2 and an ink tank 3 which constitute recording means are integrally connected. An end portion of the carriage 1 on the recording head 2 side is slidably fitted along a lead screw 6 which is rotatably supported by a chassis 5 forming a frame of the apparatus, and the other end of the carriage 1 is provided. The end is the chassis 5
The guide portion is slidably fitted to a guide rail 7 formed in parallel with the lead screw 6. The carriage 1 reciprocates in the axial direction with the rotation of the lead screw 6 while keeping its posture constant.

A lead screw gear 8 is provided at the left end of the lead screw 6, and the gear 8 and the pinion gear 10 attached to the output shaft of the carriage motor 9 mesh with each other. Further, a guide strip (6A in FIG. 1 is formed on the lead screw 6 in a screw shape at a predetermined pitch.
Lead pin (not shown) provided on the carriage 1 is fitted to the reference pin. Therefore, the carriage 1 can be reciprocated by rotating the lead screw 6 forward and backward in accordance with the forward rotation and reverse rotation of the carriage motor 9. A flexible cable 11 sends a recording signal to the recording head 2 from an electric circuit to be described later, and a part of the middle thereof is positioned and held by the pinch roller frame 13 via the flexible cable holder 12.

By ejecting ink from the recording head 2 in synchronization with the reciprocal movement (reciprocal scanning) of the carriage 1 described above, one line of recording can be recorded on the recording sheet 14. That is, the recording head 2 is provided with a fine ink ejection port, a liquid passage, and an energy acting portion provided in a part of this liquid passage, and an energy generating means for generating energy acting on ink in this acting portion. . Then, by using the energy generated by this means, ink droplets are ejected from the ink ejection ports to perform recording.

As the energy generating means for generating such energy, an electromechanical converter such as a piezo element is used, electromagnetic waves such as a laser are irradiated to generate heat, and the droplets are generated by the action of the heat generation. Something to generate,
Alternatively, there is one that heats the liquid by an electrothermal conversion element having a heating resistor.

Among them, the recording head of the type in which the liquid is ejected by utilizing the thermal energy is capable of high-resolution recording because the liquid ejection ports can be arranged at a high density. Among them, the recording head using the electrothermal converting element as the energy generating means is easy to be made compact, and has the advantages of the IC technology and the microfabrication technology, which have been remarkably improved in technology and reliability in the recent semiconductor field. This is advantageous because it can be used in two parts, high-density mounting is easy, and the manufacturing cost is low.

In the ink jet recording head 2, when one carriage is recorded by scanning the carriage 1,
The recording sheet 14 is fed by one sheet by the conveying means to record the next row.
Is conveyed by a pair of rotating bodies of the conveying roller 15 and a pinch roller 16 that is in pressure contact with the conveying roller 15, and a pair of rotating bodies of a discharge roller 19 and a spur 18 that contacts the discharge roller 19.

To specifically explain such a conveyance operation, the recording sheet 14 facing the ink ejection port surface of the recording head 2 is kept pressed against the conveyance roller 15 by the pinch roller 16 while the conveyance roller 15 is being held. Is rotated by the sheet feed motor 17 to carry the sheet by a necessary amount for the next recording. After the recording is performed on the sheet in this way, the recording sheet 14 is kept in pressure contact with the discharge roller 19 by the spur 18 and the discharge roller 19 is rotated to remove the recorded sheet 14 from the apparatus. Discharge and transport to the outside. The conveyance roller 15 and the discharge roller 19 are driven by the sheet feeding motor 17, but the driving force is transmitted via the reduction gear train 20.

Reference numeral 21 is a paper sensor, which detects the presence or absence of the recording sheet 14. Further, reference numeral 22 is a home position sensor composed of a photo interrupter, and the carriage 1
It is detected that the carriage 1 is at the home position (HP) by the interruption / release of the interruption plate 230 attached to the carriage 1. Further, 25 is a temperature sensor for detecting an ambient temperature near the recording apparatus.

FIG. 2 shows a head cartridge type recording head 2 integrated with an ink tank 3. Reference numeral 2A denotes an ink ejection port surface and 2B denotes an ink ejection port. At the time of non-recording, the ink ejection port 2B can be completely covered by keeping a cap (not shown) on the ink ejection port surface 2A. The recording head 2 includes a substrate (not shown) on which a plurality of electrothermal conversion elements that generate thermal energy used for ink ejection and a drive circuit for driving the electrothermal conversion elements are formed, and the above-mentioned substrate on the substrate. A plurality of discharge ports and liquid passages corresponding to each of the plurality of electrothermal conversion elements, and a top plate for forming a common liquid chamber communicating with the respective liquid passages are stacked, and the drive circuit is further provided. Electrical contact 2 for giving a signal from the main body of the recording device to
C is provided.

Further, a sensor for detecting the state of the recording head 2 from the recording apparatus main body can be arranged in the recording head 2, and specifically, the temperature near the electrothermal conversion element can be detected. A temperature detection sensor for changing the ink amount, an ink remaining amount detection sensor for detecting the ink when the common liquid chamber runs out, or a different type of ink in the ink tank 3 or the type of the recording head 2. However, a head type determination sensor or the like for specifying the type of the head cartridge 4 when used can be provided as necessary. Then, by determining the signals from these sensors in the recording apparatus main body and controlling the signals applied to the electrothermal converting elements, it is possible to maintain the optimum recording state. The recording head 2 having such a configuration has the ejection port surface 2A on which the ejection ports 2B are arranged.
The carriage 1 with the recording sheet 14 facing the recording sheet 14.
To be installed in.

FIG. 3 is a block diagram of the recording head as shown in FIG.
The relationship between the head cartridge 4 of the ink tank integrated type and the projection 25 protruding from the chassis (housing) 5 side for abutting the end portion on the ink tank 3 side to perform an ink discharge recovery operation described later. Is shown. The ink tank 3 is for supplementing the ink on the recording head 2 side that is consumed by recording while holding the ink, and the ink 3C contained in the ink tank 3 does not leak out of the tank 3. As described above, the sealing material 3B formed of rubber or the like seals the end portion on the side of the protrusion 25. Further, as the ink 3C held by the elastic ink holding member 3D in the ink tank 3 is consumed, the seal material 3B is configured to be movable in the arrow C direction along the tank case 3A having a substantially cylindrical shape. There is.

Then, the ink tank 3 side of the head cartridge 4 mounted on the carriage 1 is driven by the carriage motor 9 to approach the above-mentioned protrusion 25, that is, the carriage is moved in the direction of arrow D in FIG. As shown, the protrusion 25 allows the sealant 3B of the ink tank 3 to be
The ink is ejected from the ink ejection port 2B of the recording head 2 by pressurizing the ink 3C in the ink tank 3 by pressing in the direction of the arrow A, and the ejection recovery process of the recording head 2 can be performed.

Next, the structure of an information processing apparatus incorporating the above-described ink jet recording apparatus and its electric circuit will be described.

FIG. 5 shows an example of an information processing apparatus 50 incorporating the recording apparatus according to this embodiment. The information processing apparatus 50 of this example is a so-called personal computer, and is a handy type that integrally includes the inkjet recording apparatus. In the figure, reference numeral 500 denotes a printer unit including the above-mentioned inkjet recording device, and 5
Reference numeral 10 is a key 511 for inputting characters, numbers and other characters, and a key 512 for giving various commands.
A keyboard unit 520 including, for example, is a display unit for displaying processing information and includes a display screen 521.

The window 501 provided in the printer section 500 is made of, for example, transparent plastic, and the operation of the head cartridge 4 can be visually recognized through the window 501. The window 501 is constructed so that it can be opened and closed when the ink tank 3 is replaced. Also, keys 502,
Reference numeral 503 and the like are for independently instructing operations in the printer such as recovery processing in the printer unit 500 and conveyance of recording sheets. Numeral 513 is a paper feed opening opened on the front surface of the keyboard portion 510, and 514 is a floppy disk attachment / detachment opening opened on its side surface. The display unit 520 displays
The keyboard unit 510 is rotatably connected in the direction of arrow b so that it can be folded together.
Further, the keyboard portion 510 is used when the recording sheet 14 is set in the printer portion 500, as indicated by an arrow a in the figure.
Can be rotated in any direction.

FIG. 6 is a block diagram showing the configuration of the electric circuit of the information processing apparatus 50 described above. In the figure, 60
Reference numeral 1 is a controller that performs main control, and 602 is a CP that executes a certain procedure, for example, in the form of a microcomputer.
U, 603 is a RAM having an area for expanding text data and image data, a work area, etc., 604 is a ROM for storing fixed data such as a program corresponding to the above procedure and other font data, and 605 is a CPU 6
A timer 602 creates an execution cycle of 02 or a timing necessary for a printing operation by the printer unit 500, and an interface unit 606 connects a signal from the CPU 602 and a peripheral device. Further, 607 is a controller of the printer unit 500, and 608 is an output value of a sensor that detects the presence or absence of the recording head 2, a type, a temperature of the recording head 2, a sensor output that detects the presence or absence of ink in the ink tank 3, and the like. A head detection unit for detecting information of the recording head 2, a line buffer 609 for storing recording data of the recording head 2, a head driver 610 for transmitting a recording signal and electric power to the recording head 2, 611A to 611C
Are carriage motor 9 and sheet feed motor 1, respectively
7. A motor driver that sends out signals and electric power necessary for driving the automatic feeding motor 300, and 612 detects outputs of sensors such as the home position sensor 22, the paper sensor 21, the temperature sensor 25, and the humidity sensor 26. It is a sensor detection unit that does. Further, 70 is, for example, FDD, HD
An external storage device such as a D or a RAM card, and 80 is an external interface for communicating with other information processing devices or directly connecting to an internal bus to control peripheral devices. Although not included in the block diagram of FIG. 6, there is another power supply unit for supplying electric power to the above electric circuit, which includes, for example, a rechargeable battery, a disposable dry battery, or an information processing unit. There is a converter for AC power supply when the apparatus main body is fixedly used, and in this embodiment, even if the recording apparatus is powered off, the RAM 60 stores history data of atmospheric temperature and atmospheric humidity in the recording apparatus.
3, a sub-battery such as a dry battery (not shown) is provided to store the data in the memory 3.

Recording is performed on the recording sheet 14 by the recording unit with the above-described circuit configuration. The control sequence of the ejection recovery processing operation of the recording head 2 will be described below.

FIG. 7 is a flowchart showing the operation procedure of the ejection recovery process of the recording head 2. When the recording head 2 is left unused for a long time, when air bubbles or dust are mixed in the ink ejection port 2B, or when the ink 3C is not ejected or recorded due to thickening caused by evaporation of the ink solvent. When the state becomes unsuitable, the ejection recovery process is performed according to the following procedure.

When the ejection recovery process starts, first, in step S1, for example, 500P is used to move the carriage 1 in the direction of arrow D in FIG. 1 by the carriage motor 9.
The carriage 1 is moved by PS for about 3000 steps. As a result, the carriage 1 is about 600 STE at the beginning.
In P minutes, the sealing material 3B of the ink tank 3 moves to a position where the projection 25 is in contact with the projection 25 (FIG. 4), and thereafter, the projection 25 is the sealing material 3B and the projection is generated by the thrust generated with the movement of the carriage 1. By pushing in the direction, the ink 3C is pressurized and the ink 3C is ejected from the ink ejection port 2B of the recording head 2. Then, after the recovery operation is completed in step S2, the motor 9 is stopped in step S3, and in step S4
1 to move the carriage 1 in the direction of arrow C in FIG. 1, that is,
Home position H. The operation is returned to P (carriage motor 9 side), and the ejection recovery processing operation ends.

In this embodiment, the current supplied to the carriage motor 9 at the time of the ejection recovery processing operation is constant. However, if the recording head 2 is not used for a very long period of time, the ink sticking may be severe. In this case, the current value for driving the carriage motor 9 is changed, for example, the current value is increased to increase the thrust of the carriage 1.
The pressure applied to the sealing material 3B may be increased. Also,
In the above embodiment, the contact member 25 is a rigid body, but an elastic body such as a spring may be used. Furthermore, in the above-described embodiment, the ink tank has the structure shown in FIG. 3, but like the ink tank 30 shown in FIG.
A flexible bag 30D containing the ink 3C is housed inside the ink tank case 30A, and an opening 30E for allowing the protrusion 25 to enter the case 30A is provided on the end side of the case 30A. Good.

(Others) The present invention is particularly provided with means for generating heat energy as energy used for ejecting ink (for example, an electrothermal converter or a laser beam) even in the ink jet recording system. The present invention brings about excellent effects in a recording head and a recording apparatus of the type in which the state of ink is changed by the heat energy. This is because such a system can achieve high density recording and high definition recording.

Regarding its typical structure and principle, see, for example, US Pat. Nos. 4,723,129 and 4740.
What is done using the basic principles disclosed in 796 is preferred. This method is a so-called on-demand type,
It can be applied to any of the continuous type, but especially in the case of the on-demand type, it can be applied to the sheet holding the liquid (ink) or the electrothermal converter arranged corresponding to the liquid path. By applying at least one drive signal corresponding to the recording information and giving a rapid temperature rise exceeding nucleate boiling, heat energy is generated in the electrothermal converter, and film boiling is caused on the heat acting surface of the recording head. Liquid (ink) corresponding to this drive signal in a one-to-one correspondence
It is effective because bubbles can be formed inside. Due to the growth and contraction of the bubbles, the liquid (ink) is ejected through the ejection opening to form at least one droplet. It is more preferable to make this drive signal into a pulse shape, because the bubble growth and contraction are immediately and appropriately performed, so that the ejection of the liquid (ink) with excellent responsiveness can be achieved. As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise on the heat acting surface are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the discharge port, the liquid passage, and the electrothermal converter (the linear liquid passage or the right-angle liquid passage) as disclosed in the above-mentioned specifications, US Pat. No. 4,558,333, US Pat. No. 4,558,333, which discloses a configuration in which a heat acting portion is arranged in a bending region.
The structure using the specification of No. 59600 is also included in the present invention. In addition, Japanese Unexamined Patent Publication No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy is provided. The effect of the present invention is effective even if the configuration corresponding to the ejection portion is disclosed in JP-A-59-138461. That is, according to the present invention, recording can be surely and efficiently performed regardless of the form of the recording head.

Further, as the constitution of the recording apparatus of the present invention, it is preferable to add the ejection recovery means of the recording head, the auxiliary auxiliary means, etc. because the effects of the present invention can be further stabilized. Specifically, heating is performed by using a capping unit, a cleaning unit, a pressure or suction unit for the recording head, an electrothermal converter or a heating element other than this, or a combination thereof. Examples thereof include a preliminary heating unit for performing the discharge and a preliminary discharge unit for performing discharge different from the recording.

Regarding the type or number of recording heads to be mounted, for example, only one is provided corresponding to a single color ink, or a plurality of inks having different recording colors and densities are supported. A plurality of pieces may be provided. That is, for example, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, but it may be either the recording head is integrally formed or a plurality of combinations may be used. The present invention is also extremely effective for an apparatus provided with at least one of full-color recording modes by color mixing.

In addition, in the above-described embodiments of the present invention, the ink is described as a liquid, but an ink that solidifies at room temperature or lower and that softens or liquefies at room temperature may be used. Or, in the inkjet system, it is common to control the temperature of the ink itself within the range of 30 ° C. or higher and 70 ° C. or lower to control the temperature so that the viscosity of the ink is within the stable ejection range. Sometimes, a liquid ink may be used. In addition, the temperature rise due to thermal energy is positively prevented by using it as the energy of the state change of the ink from the solid state to the liquid state, or in order to prevent the evaporation of the ink, it is solidified and heated in the standing state. You may use the ink liquefied by. In any case, by applying thermal energy such as ink that is liquefied by applying thermal energy according to the recording signal and liquid ink is ejected, or that begins to solidify when it reaches the recording medium. The present invention can be applied to the case where an ink having a property of being liquefied for the first time is used. In this case, the ink is
JP-A-54-56847 or JP-A-60-7
As described in Japanese Patent No. 1260, it may be configured to face the electrothermal converter in a state of being held as a liquid or a solid in the concave portion or the through hole of the porous sheet. 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, as the form of the ink jet recording apparatus of the present invention, besides the one used as an image output terminal of an information processing apparatus such as a computer, a copying apparatus combined with a reader or the like, and a facsimile apparatus having a transmission / reception function can be used. It may be a form or the like.

[0051]

As described above, according to the present invention, a carriage equipped with a recording head and an ink tank for supplying ink to the recording head, a moving means for moving the carriage, and the recording apparatus. An operating member, which is provided so as to project from the housing of the apparatus in the moving direction of the carriage, contacts the ink tank outside the recording area, and ejects ink from the recording head through the ink tank, and the ink tank. Since the carriage is moved to a position where ink can be ejected from the recording head after being brought into contact with the operating member, a control means for generating an ink ejection pressure in the recording head is provided. Even if you leave the recording device for a long time and then try to use it again, move the ink tank mounted on the carriage to move the carriage. By pressing with a member protruding from the casing of the recording apparatus, it is possible to pressurize the ink in the ink tank and eject the ink from the ejection port of the recording head to perform ejection recovery processing. It is possible to always perform good recording by avoiding non-ejection and ejection failure of ink droplets due to clogging of the ejection port due to bubble accumulation in the liquid chamber and thickening or sticking of ink, and with a simple configuration. It is possible to provide an ink jet recording apparatus that has a low product price and can perform stable recording.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing an example of a cartridge type recording head according to the present invention.

FIG. 3 is a diagram showing a relationship between a cartridge type recording head according to the present invention and a recovery operation protrusion.

FIG. 4 is an explanatory diagram showing an ink ejection recovery operation according to the present invention.

FIG. 5 is a perspective view showing an example of an information processing apparatus incorporating the recording apparatus of the present invention.

FIG. 6 is a block diagram showing a circuit configuration of an information processing apparatus according to the present invention.

FIG. 7 is a flowchart showing a procedure of a discharge recovery processing operation according to the present invention.

FIG. 8 is a cross-sectional view showing a configuration of a cartridge type recording head according to another embodiment of the present invention together with a recovery operation protrusion.

[Explanation of symbols]

 1 Carriage 2 Recording Head 2A Ink Ejection Port Surface 2B Ink Ejection Port 3,30 Ink Tank 3A, 30A Ink Tank Case 3B Sealing Material 3C, 30C Ink 5 Chassis 9 Carriage Motor 25 Protrusion (Operating Member) 30D Flexible Bag 30E Opening

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Claims (12)

[Claims] 1. An ink jet recording apparatus having a recording head for ejecting ink from an ink ejection port to perform recording, the carriage comprising the recording head and an ink tank for supplying ink to the recording head, and the carriage. A moving means for moving the recording device, a protrusion protruding in the moving direction of the carriage from the casing of the recording device, contacting the ink tank outside the recording area, and ejecting ink from the recording head through the ink tank. An operating member for causing the ink tank to come into contact with the operating member, and then the carriage is moved to a position where ink can be ejected from the recording head to generate an ink ejection pressure in the recording head. An inkjet recording apparatus, comprising: 2. The ink jet recording apparatus according to claim 1, wherein the moving unit is driven by a carriage drive motor controlled by the control unit. 3. The ink jet recording apparatus according to claim 1, wherein the control unit is capable of adjusting an ink ejection pressure generated in the recording head. 4. The ink jet recording apparatus according to claim 1, wherein the ink ejection pressure can be adjusted by changing the energy for driving the carriage drive motor. 5. The ink jet recording apparatus according to claim 4, wherein the energy for driving the carriage drive motor changes according to the magnitude of current, voltage, or pulse width. 6. The ink jet recording apparatus according to claim 1, wherein the ink ejection pressure can be adjusted by a spring force of a spring provided in the actuating means. 7. The recording head is a recording head for ejecting ink by utilizing thermal energy, and is provided with an electrothermal converter for generating thermal energy applied to the ink. Item 7. The inkjet recording device according to any one of items 1 to 6. 8. The recording head ejects ink from the ink ejection port by utilizing a pressure change caused by growth and contraction of bubbles due to film boiling generated by thermal energy generated by the electrothermal converter. The inkjet recording device according to claim 7, wherein 9. The inkjet recording apparatus according to claim 1, wherein the inkjet recording apparatus is applicable to a copying machine including at least a control unit. 10. The inkjet recording apparatus according to claim 1, wherein the inkjet recording apparatus is applicable to a facsimile apparatus including at least a control unit and a facsimile transmission / reception unit. 11. The inkjet recording apparatus according to claim 1, wherein the inkjet recording apparatus is applicable to a word processor including at least an input unit, a control unit, and a display unit. . 12. The inkjet recording apparatus according to claim 1, wherein the inkjet recording apparatus is applicable to computer equipment.