JPH091820A - Ink jet recording head, ink jet head cartridge and recording apparatus - Google Patents

Abstract

PURPOSE: To provide an inexpensive recording apparatus capable of performing high-grade high density recording at a high speed. CONSTITUTION: With respect to the nozzles of a recording head chip becoming a standard, the other adjacent chips are arranged so as to be shifted, for example, at a pitch half the distance between nozzles. The emitting timing of the adjacent chips is adjusted to the intermediate position between the nozzles of the standard chip. Recording in density higher than the nozzle pitch becomes possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a predetermined portion on a recording medium such as recording paper by ejecting ink droplets by applying energy required for ejection to ink in a nozzle at a predetermined timing. The present invention relates to a recording device for recording. Here, the recording means cloth, thread, paper,
Ink application of all ink supports that receive ink application such as sheet material (printing) is included, and the recording device includes all of various information devices or a printer as an output device thereof. It can be used.

[0002]

2. Description of the Related Art A recording device having functions of a printer, a copying machine, a facsimile, etc., or a recording device used as an output device of a multifunction machine or a workstation including a computer, a word processor, etc. is based on image information transferred. By driving the energy generator of the recording head, an image is recorded on a recording medium such as paper or a plastic thin plate (OHP or the like). Such a recording device can be classified into an ink jet type, a wire dot type, a heat sensitive type, a thermal transfer type, a laser beam type and the like depending on the method of the recording means used.

Among them, the ink jet type recording apparatus is for recording by ejecting ink from a recording head onto a recording medium, and it is easy to make the recording means compact and record a high-definition image at a high speed. It is possible to record on plain paper without any special treatment, running cost is easy, and because it is a non-impact method, there is little noise, and a color image is recorded using multi-color ink. It has various advantages such as being easy to do.

(Prior Art 1) A conventional ink jet recording head has been manufactured by a main technique such as a nozzle forming method by photolithography and a nozzle forming method by plastic molding.
In order to achieve a density higher than i, a high processing technology is required when forming on the same surface, especially 700dp.
For i or more, it was necessary to form the flow path, the discharge port, and the pressure generating element at a pitch of about 30 μ.

However, in the above conventional method,
If the density is increased in the nozzle row direction, the machining accuracy of the nozzles is improved, resulting in an increase in the cost of the apparatus and a deterioration in the processing yield, resulting in an expensive unit price per nozzle.

Further, the pitch between the nozzles is narrowed,
Since the space between adjacent ejection ports is narrowed, the image quality is likely to deteriorate due to the influence of wetting from other ejection ports.

Further, in printing at the same speed, when the density is increased, the timing of ejecting the recording dots is correspondingly reduced, and the responsiveness per nozzle must be improved, and it is difficult to maintain the image quality. It was

(Prior Art 2) In the conventional ink jet recording apparatus, a high-quality mode in which all recording head pixels are used for recording and a high-speed mode in which recording dot pixels are thinned out and doubled in high-quality mode A method having two types of modes is adopted.

However, in such a conventional recording method, the high-speed mode has a drawback that the printing quality is extremely deteriorated because the recording dots are thinned out as compared with the high-quality mode.

(Prior Art 3) Further, in the conventional ink jet recording apparatus, when the monochrome printing and the color printing are respectively supported, the ink jet head cartridge is replaced, for example. Yellow (Y), magenta (M), cyan (C), black (B
The ink of (k) and four recording heads corresponding to these inks are mounted on the carriage, and all recording heads are used during color printing, but recording may be performed using only Bk recording head during monochrome printing. it can.

However, in the above recording apparatus,
Since all recording heads are used during color printing, a high-density and high-quality recorded image can be obtained, but the recording speed is slower than in monochrome printing, and there is a drawback that it is not possible to meet the demand for high-speed recording. On the other hand, since only the Bk recording head is used during monochrome printing, the recording speed can be increased, but the recording density is low and a high-quality recorded image cannot be obtained.

[0012]

[Problems to be solved by the invention]

(Problem Corresponding to Prior Art 1) The first object of the present invention is to
An object of the present invention is to provide an inexpensive inkjet recording head, an inkjet head cartridge, and a recording device that can perform high-speed and high-quality high-density recording without requiring switching.

(Problem Corresponding to Prior Art 2) A second object of the present invention is to provide a recording apparatus capable of performing high-quality recording even in the high-speed mode, and capable of performing high-speed recording even in the high-quality mode. is there.

(Problem Corresponding to Prior Art 3) A third object of the present invention is to provide a recording apparatus capable of high-speed recording during color printing and high-quality high-density recording during monochrome printing. is there.

[0015]

In order to achieve the first object, the invention according to claim 1 is mounted on a carriage of a recording apparatus, used by scanning, and used for ejecting a plurality of inks. In an ink jet recording head in which a plurality of recording head chips in which the ejection ports are arranged are displaced from each other in the scanning direction, the ejection port arrangement of a predetermined recording head chip among the recording head chips is used as a reference, At least one ejection port array of the other recording head chips is arranged with a predetermined pitch offset in the ejection port array direction, and the ejection port array of at least one other recording head chip of the reference recording head chip is It is characterized in that the recording head chips are displaced from each other at equal intervals in the scanning direction by the predetermined pitch.

According to a second aspect of the present invention, the printhead chips in the same set of the printheads are sequentially arranged in a stepwise manner from the reference printhead chip,
In addition, the distance between adjacent groups may be the same as the distance between the recording head chips in the same group.

According to a third aspect of the present invention, each of the recording head chips generates a flow path provided corresponding to the ejection port, and an energy provided corresponding to the flow path for ejecting ink. And a discharge energy generating element for

According to a fourth aspect of the present invention, the ejection energy generating element may be a heating resistor that generates heat energy.

According to a fifth aspect of the invention, each of the recording head chips has a built-in shift register and a transistor for receiving an external signal for driving and outputting a signal for driving an ejection energy generating element. Good.

According to a sixth aspect of the present invention, when the recording head chip is arranged at a predetermined position of the frame, it does not come into contact with the frame and is fixed at a predetermined position by adhesion and sealing. Good.

According to a seventh aspect of the present invention, the plurality of recording head chips are integrally provided with a portion for contacting an electrical contact portion on the recording head chip to receive an external signal from the recording device, and You may have a relay connector which receives supply of an electrical signal.

In the invention of claim 8, the number of the recording head chips may be four.

In the invention according to claim 9, the number of the recording head chips may be nine.

In the tenth aspect of the present invention, different kinds of liquid may be supplied to each of the recording head chips.

In the invention according to claim 11, the predetermined pitch may be 1/2 of the ejection port pitch.

In the twelfth aspect of the present invention, the predetermined pitch may be 1/3 of the ejection port pitch.

In the thirteenth aspect of the present invention, four types of recording head chips to which ink of the same color is respectively supplied may be arranged as the plurality of recording head chips.

According to a fourteenth aspect of the present invention, there is provided an ink jet head cartridge, the ink jet recording head according to the first aspect, and an ink container for supplying ink corresponding to each recording head chip of the ink jet recording head. And having.

A fifteenth aspect of the present invention is a recording apparatus, comprising the ink jet recording head according to any one of the first to twelfth aspects, and a carriage for mounting and scanning the ink jet recording head. Is characterized by.

According to a sixteenth aspect of the present invention, a line connecting a plurality of recording dots from each nozzle of the reference recording head chip is moved along with the movement of the ink jet recording head in the scanning direction. Further, a signal adjusting mechanism for adjusting an external signal to the recording head may be provided so as to eject recording dots from each nozzle of another recording head chip in the same set as the reference recording head chip. .

In the seventeenth aspect of the present invention, the signal adjusting mechanism first determines whether or not the position of the recording dot by the recording performed in the initial setting state is ejected to a predetermined position, and the ejection is performed. It may include a position adjusting means for adjusting the position of the recording dot by adjusting an external signal when there is no such signal.

According to an eighteenth aspect of the present invention, a plurality of the ink jet recording heads are arranged on a carriage so as to be replaceable, and an ink tank for supplying ink to a recording head chip of each recording head is provided. It may be replaceably arranged on the carriage.

In a nineteenth aspect of the present invention, the ejection amount of the ink jet recording head may be set corresponding to a half pitch of a predetermined pitch of nozzles of the recording head chip. In order to achieve the second object, the invention according to claim 20 is a recording apparatus, comprising a nozzle having an ejection port for ejecting a plurality of inks, the nozzle communicating with each ejection port, Ink cartridges are provided, each of which has at least four inkjet recording regions for ejecting ink by the energy generated by the energy generating element provided in each nozzle, and supplies the same recording liquid to each recording region. High-speed recording and high-quality recording can be selected by replacing the ink cartridge.

In the present invention, the recording density may be doubled when recording in high quality recording as compared with recording density in high speed recording.

According to a twenty-second aspect of the present invention, the bleeding of the recording liquid in the ink cartridge during recording at high speed recording on the recording paper is more than that in the recording liquid in the ink cartridge during high-quality recording. You may increase the rate.

According to a twenty-third aspect of the present invention, each recording portion of the recording head, in which the plurality of recording portions are fixed on the same frame and integrated, receives an external signal for driving and has an ejection energy generating element. A shift register for outputting a signal for driving and a transistor may be incorporated.

According to a twenty-fourth aspect of the present invention, the ink jet recording head may be the ink jet recording head of the first aspect.

According to a twenty-fifth aspect of the present invention, when the recording mode is switched by exchanging the ink cartridge on the carriage on which the ink cartridge is detachably mounted, the ink in the recording head is washed during the exchange of the ink cartridge. It may have a recovery operation function.

According to the twenty-sixth aspect of the present invention, when the ink jet recording head is replaced on the carriage, the ink cartridge is provided with a portion showing the attribute of each recording liquid, and the portion is installed in the main body of the recording apparatus at present. It may be provided so that the existing ink cartridge can be identified.

In the twenty-seventh aspect of the present invention, when an ink cartridge is mounted, it may be provided with means for determining a portion indicating the attribute of the recording liquid and displaying the type of ink actually mounted. .

In the twenty-eighth aspect of the present invention, the energy generating element is configured to convert an electric signal into heat energy, rapidly heat the inside of the nozzle to generate bubbles, and eject ink. May be.

According to a twenty-ninth aspect of the present invention, a plurality of the ink jet recording heads are arranged on the carriage in a replaceable manner, and ink tanks for supplying ink to the respective recording head chips are provided. It may be replaceably arranged on the carriage.

In the thirtieth aspect of the present invention, the moving speed of the carriage may be variable by replacing the ink cartridge.

In order to achieve the third object, a thirty-first aspect of the invention is a recording apparatus, which has an ejection port for ejecting a plurality of inks, and a nozzle communicating with each ejection port. Each of the nozzles has at least four inkjet recording regions for ejecting ink by the energy generated by the energy generating element provided in each of these nozzles, and the recording is different from the case where the same recording liquid is supplied for recording. It is characterized in that it is possible to select whether to supply and record the liquid.

In the present invention, the recording density when recording with the same recording liquid may be higher than the recording density when recording with different recording liquids.

According to a thirty-third aspect of the present invention, the recording liquids for recording with the different recording liquids are four colors of Y, M, C, and Bk, and the recording liquids for recording with the same recording liquid are Bk.
It may be.

In the thirty-fourth aspect of the invention, the recording liquid when recording with the different recording liquid may be the same color dark and light ink, and may be the same as the recording liquid when recording with the same recording liquid. In the thirty-fifth aspect of the present invention, the bleeding rate of the recording liquid when recording with a different recording liquid may be larger than that when recording with the same recording liquid.

According to a thirty-sixth aspect of the present invention, an energy generating element is driven by receiving an external signal for driving to each recording portion of the recording head in which the plurality of recording portions are fixed on the same frame and integrated. A shift register for outputting a signal for and a transistor may be incorporated.

According to a thirty-seventh aspect of the present invention, the recording portions are composed of four portions, and the other recording portions are arranged on the same frame so as to be displaced by half of the nozzle pitch on the recording image with the first recording portion as a reference. The arrangement may be fixed.

According to a thirty-eighth aspect of the present invention, the same recording liquid and a different recording liquid are exchanged by exchanging the ink cartridge on the carriage on which the ink cartridge including the recording portion is removably mounted. May have a recovery operation function of cleaning the ink in the recording head.

According to a thirty-ninth aspect of the invention, the ink cartridge to be replaced on the carriage is provided with a portion showing the attribute of each recording liquid, and the ink cartridge actually mounted in the recording apparatus main body is It may be identifiable.

The invention as set forth in claim 40 may have means for judging the portion showing the attribute of the recording liquid when the ink cartridge is mounted and displaying the state of the ink actually mounted.

According to a forty-first aspect of the present invention, the energy generating element is configured to convert an electric signal into heat energy, rapidly heat the inside of the nozzle, generate bubbles, and eject ink. It may be.

According to a forty-second aspect of the present invention, a plurality of the recording heads are arranged on the carriage in an exchangeable manner, and an ink tank for supplying ink to the recording head chips of each recording head is provided. It may be replaceably arranged on the carriage.

[0055]

According to the present invention for achieving the first object, it is difficult to form a high-density recording dot in a matrix by arranging the same ink-jet chips so as to be shifted in a predetermined frame, which is difficult. It has become possible to easily and inexpensively record high-density, high-speed, and high-quality images without deteriorating the nozzle processing technology and image quality.

According to the present invention for achieving the above-mentioned second object, it is possible to record double density in the high quality mode, and to set the carriage speed more than double in the high speed mode.
Moreover, since it is possible to perform recording without thinning out pixels, there is an advantage that recording can be performed without degrading image quality.

According to the present invention for attaining the third object, in an ink jet recording apparatus for combined use of monochrome and color, the recording speed for color and monochrome is not slowed down, and doubled when monochrome is used. It has become possible to provide a recording apparatus which has a high density and can obtain a high-quality recorded image, and can exert the performance of the recording head efficiently even in monochrome.

[0058]

Embodiments of the present invention will be described below.

[Embodiment 1] First, FIGS. 1 and 2 show a concrete embodiment of an essential part of an ink jet head IJH used in the present invention. As shown in FIG. 1, an inkjet head IJH accommodates a substrate 1 (hereinafter referred to as a heater board) provided with an ink ejection pressure generating element, and a recording medium (hereinafter referred to as ink) bonded to the substrate 1. Ink chamber 7 and ink path 8 are formed by a substrate 2 having an uneven portion. This substrate (hereinafter referred to as a grooved top plate) 2 is
It also has an ink rate of 4 together.

The heater board 1 is adhered and fixed to the supporting substrate 3 with an adhesive, and the grooved top plate 2 is provided on the heater board 1 and a heater portion arranged on the heater board 1 as an ink ejection pressure generating element. The orifice plate 4 of the grooved top plate 2, which is temporarily adhered so that the ink paths 8 of the grooved top plate 2 are aligned and fixed by the mechanical biasing force of the stopped pushing spring 6, has a supporting substrate. It is arranged on the front end face of 3 like a front drip.

The ink is supplied from the ink supply member 5 through the ink supply port 2a provided on the top of the grooved top plate 2, and the ink supply member 5 has a protrusion bar (not shown) and is provided on the support substrate 3. It is fixed to the support substrate 3 by inserting a protruding bar into the through hole provided in the and then caulking it with heat. At this time, uniform gaps 10a and 10b are formed between the orifice plate 4 and the ink supply member 5.

In FIG. 1 and FIG. 2, the ink supply member 5 and
Gap 10a, 10b, such as the heater board 1 and the grooved top plate 2,
In addition, the sealant is poured as an adhesive space in the bonding region where a small gap is provided so that the sealant can be enclosed between the orifice plate 4 and the front end surface of the support substrate 3.

The groove 3A may be any groove as long as the sealant can be sufficiently enclosed therein.

It is important that the groove 3A provided in the support substrate 3 forms a space continuous with the gap between the orifice plate 4 and the ink supply member 5. The groove 3A is completely covered with the orifice plate 4, or the gap 10
Independence from a and 10b is not preferred. Because the flow path of the injected sealant is cut off,
This is because good sealing cannot be achieved. The groove 3A formed on the front end surface of the support substrate 3 is formed by pressing in consideration of mass productivity.

The sealant is injected from a sealant injection port (not shown) in the upper part of the ink supply member 5 to seal a wire bonding portion (not shown) for transmitting an electric signal and at the same time as the orifice plate 4 and the ink. Gap 10 with supply member 5
A and 10b are sealed, and further, the gap region between the orifice plate 4 and the front end face of the support substrate 3 is completely sealed by passing through the groove 3A provided in the support substrate 3. Thus, in order for the sealant to seal the gap without blocking the orifice 9,
Appropriate thixotropy and proper viscosity are required. That is, if the viscosity of the sealant is too low, the sealant enters the nozzles and the orifices 9 in the grooved top plate 2 and causes clogging. On the other hand, if the viscosity is too high, the sealant will not completely flow around the orifice plate 4. The viscosity of the sealant used in the present invention is 1,000 to 15,000 cp.
s, more preferably 2,000 to 10,000 cp
s, most preferably 4,000 to 10,000 cps.

As the sealant, a heater board 1 made of a silicon wafer, a support substrate 3 made of metal, a grooved top plate 2 made of synthetic resin, and an orifice plate 4,
Good adhesion with the ink supply member 5 and the like is required. Further, in order to bond a plurality of different materials having different thermal expansion coefficients, a soft material capable of absorbing the difference in thermal expansion due to the temperature environment, specifically, JIS standard A100.
It is necessary to use a sealant having the following hardness.

On the other hand, since this sealant also has a function of covering and protecting the wire bonding portion, it must be a material that does not corrode the aluminum wire bonding portion and the aluminum electrode. In order to prevent corrosion of the electrodes and wire bonding, C in the sealant is used.
The concentration of impurity ions such as l @-and Na @ + is preferably 30 ppm or less. Such materials are also required to have properties such as excellent ink resistance, particularly excellent solvent resistance and alkali resistance, since they locally contact the ink. Furthermore, it is also necessary that the permeability to oxygen, nitrogen, and water vapor is low.

(Inkjet head unit) FIG.
Shows an exploded perspective view of the inkjet head unit IJHU, and the configuration thereof will be described.

Inkjet head unit IJHU
Is a unit that performs recording by using an electrothermal converter that generates thermal energy for causing film boiling in ink according to an electric signal. In FIG. 3, 100 is
This is a heater board in which electrothermal converters (discharge heaters) arranged in a plurality of rows on a Si substrate and electric wiring such as Al for supplying electric power to the electrothermal converters are formed by a film forming technique.
Reference numeral 200 denotes a wiring board for the heater board 100. The wiring board 200 is connected to the wiring of the heater board 100 (for example, is connected by wire bonding), and a pad located at an end of the wiring for receiving an electric signal from the main body device. have. Further, this heater board 100 has a shift register and a driving transistor built therein in order to reduce the number of pads for wire bonding, but they are not shown.

Reference numeral 1300 denotes a grooved top plate provided with partition walls for distinguishing a plurality of ink flow paths from each other and a common liquid chamber for accommodating ink to each ink flow path, and an ink tank. The ink receiving port 1500 which receives the ink supplied from the above is introduced into the above-mentioned common liquid chamber, and the orifice plate 400 having a plurality of ejection ports corresponding to the respective ink flow paths are integrally formed. Polysulfone is preferable as the integral molding material, but other molding resin materials may be used.

Reference numeral 300 is, for example, a metal support that supports the back surfaces of the heater board 100 and the wiring board 200 on a flat surface. Reference numeral 500 is a presser spring, which is M-shaped and has an M-shape.
At the center of the character, the common liquid chamber of the grooved top plate 1300 is pressed with a light pressure, and a part of the liquid passage, preferably the area near the discharge port, is concentratedly pressed with a linear pressure by the front droop 501. Heater board 10
0 and the grooved top plate 1300 are engaged by the foot portion of the presser spring 500 in the hole 3121 of the support member 300 on the back surface side of the heater board 100 so that they are sandwiched, thereby engaging the two. The heater board 100 and the top plate 1300 are pressure-bonded to each other by the concentrated biasing force of the presser spring 500 and its front slant portion 501. The attachment of the wiring board 200 to the support 300 is performed by sticking with an adhesive or the like. The pair of left and right recesses 2400 of the support body 300 are provided near the positioning protrusions 2500 and 2600, respectively. The ink supply member 600 includes the ink supply pipe 220.
An ink conduit 1600 continuous to 0 is formed as a cantilever having the supply pipe 2200 side fixed, and a sealing ball 602 for forming a flow path between the fixed side of the ink conduit and the ink supply pipe 2200 is inserted. A filter 700 is provided at the end of the supply pipe on the tank side.

Since the ink supply member 600 is molded, the ink supply member 600 is inexpensive, has a high positional accuracy, and eliminates a decrease in the accuracy of formation and manufacturing.
600 makes it possible to stabilize the pressure contact state of the conduit 1600 to the ink receiving port 1500 even in mass production. In this example, a more complete communication state can be reliably obtained only by pouring the sealing adhesive from the ink supply member side under this pressure contact state. The ink supply member 600
The fixing of the support member 300 to the support member 300 is performed by causing the back surface side pin (not shown) of the ink supply member 600 to project through the hole of the support member 300 through the hole of the support member, and the portion protruding to the back surface side of the support member 300 is hot air. Easy to wear.

(Head Device) Next, FIG. 4 and FIG.
FIG. 1 shows an exploded perspective view of a unit frame of the head device HD and an exploded perspective view of respective components.

A plurality of inkjet head units I
By arranging JHUs in parallel and supplying the same ink to each, high-density recording can be easily performed. Also,
Different inks may be supplied to the plurality of inkjet head units IJHU. In both cases, it is necessary that the inkjet head units IJHU are arranged with high precision.

In FIG. 4, reference numeral 4000 denotes a plurality of ink jet head units IJHU arranged with high precision,
In addition, each inkjet head unit IJHU is provided in each inkjet head unit holding portion 4003 surrounded by the outer wall 4001 and the inner wall 4002, or each inner wall 4002, which is a unit frame for maintaining this accuracy.
Is arranged. The positioning of the unit frame 4000 and each inkjet head unit IJHU is performed by a method of abutting the reference of each inkjet head unit IJHU and the receiving portion of the unit frame 4000 that receives it and adhering or fixing them with a fixing member or the like. In this case, each inkjet head unit must be processed with high accuracy from the reference to the orifice, and the receiving portion of the unit frame 4000 must also be highly accurate with respect to each inkjet head unit IJHU.

Alternatively, as another fixing method, each ink jet head unit IJHU is arranged by using a technique such as image processing without abutting against the unit frame 4000 and fixed by adhesion or the like, and each ink jet head unit IJHU is fixed between the ink jet head units IJHU. There is a method to obtain positional accuracy. 400
Reference numeral 5 denotes an absorbent made of a porous member. When the head device HD is used for color recording, when wiper wiping is performed for recovery scanning of the face surface, ink adhering to the wiper is absorbed to adjoin the ink jet head. This is to prevent different inks from adhering to the face surface of the unit IJHU and is arranged between the inkjet head units IJHU.

Next, in FIG. 5, reference numeral 4100 denotes each ink jet head unit IJH in the unit frame 4000.
It shows a state in which U is arranged. 4500 is a relay connector for each inkjet head unit IJ
A plurality of contacts 4501 for supplying an electric signal to the HU are arranged in a line in a plurality for each inkjet head unit IJHU, and further provided in parallel for a plurality of inkjet head units, and these are provided in the housing 4.
Positioned / held at 506. Reference numeral 4502 denotes a connection portion, which contacts a connection pad provided on the main body carriage HC shown in FIG.
It is configured to be electrically connected.

Reference numeral 4503 denotes a pair of positioning holes, which are fitted with complementary positioning pins on the main body carriage HC to prevent the positional deviation of the connection portion 4502 and the connection pad on the carriage and to improve the contact reliability. It is for securing. The wiring from the contact 4501 to the connection portion 4502 is the housing 450.
Among the six, those that are electrically grouped between the heads, such as GND, are grouped together to reduce the number of connections with the main body. 4504 is for positioning with the unit frame 4000 and each contact 4501.
Unit frame 4000 with a pair of pins for receiving the force of
It fits in a pair of holes 4011 above. Reference numeral 4505 denotes a pair of engagement arms that engage with the locking recesses 4010 of the unit frame 4000 and fix the relay connector 4500 to the unit frame 4000. Reference numeral 4006 denotes a cover, which covers and protects an internal precision portion when the head device HD is completed, and has a hole 4009 through which the ink supply pipe 2200 and the filter 700 are passed. Four
008 is a locking claw, which is a locking portion 40 of the unit frame 4000.
It is for fixing the cover 4006 to 07.

Next, FIG. 6 shows a perspective view of the head device assembly HD and the ink tank 5000.

The ink tank 5000 has an opening into which the ink supply pipe 2200 of each ink jet head unit IJHU can be inserted, and is independent of each other.
The joint with each inkjet head unit IJHU can be easily attached and detached, and when the ink in the ink tank 5000 is consumed, it can be replaced with a new ink tank. Therefore, in the ink jet recording apparatus for high density recording, only the ink tank can be replaced for each ink of the consumed chip, which is convenient.

(Device Main Body) Next, the outline of the device main body will be described.

FIG. 7 is an external view of an ink jet recording apparatus IJRA to which the present invention is applied. Driving force transmission gears 5011 and 5009 are interlocked with forward and reverse rotations of a drive motor 5013.
Spiral groove 50 of the lead screw 5005 rotating through
The carriage HC that engages with the pin 04 is a pin (not shown).
And is reciprocated on the guide bar 5003 in the directions of arrows a and b. Reference numeral 5002 denotes a paper pressing plate, which is a carriage H.
The recording paper P is pressed against the platen 5000 in the moving direction of C. Reference numerals 5007 and 5008 denote home position detecting means for confirming the presence of the lever 5006 of the carriage HC in this area by a photocoupler and switching the rotation direction of the motor 5013. Reference numeral 5016 is a member for supporting a cap member 5022 that caps the front surface of the recording head. Reference numeral 5015 is a suction unit that sucks the inside of the cap 5022, and performs suction recovery of the recording head through the in-cap opening 5023. Reference numeral 5017 is a cleaning blade, and 5019 is a member for moving the blade 5017 in the front-back direction.
These are supported by 18. Blade 5017 is
Needless to say, a known cleaning blade other than this form can be applied to this example. Reference numeral 5012 denotes a lever for starting suction for suction recovery, which is the carriage H.
The cam 5020 is moved along with the movement of the cam 5020 engaged with C, and the driving force from the drive motor is movement-controlled by a known transmission means such as clutch switching.

The capping, cleaning, and suction recovery are configured so that desired processing can be performed at their corresponding positions by the action of the lead screw 5005 when the carriage HC comes to the home position side area. As long as the desired operation is performed at the timing, any of the above can be applied to this example. Each of the configurations described above is an excellent invention when viewed alone or in combination, and shows preferred configuration examples for the present invention. Further, the above-mentioned inkjet head unit IJ is attached to the carriage HC.
The HU and the ink tank 5000 are installed detachably.

Next, the structure of the recording head and the recording method will be described with reference to FIGS. 8 and 9.

FIG. 8 is a front view of the recording head according to the first embodiment of the recording apparatus of the present invention as viewed from the ejection port side. FIG.
The X direction is the main scanning direction in which the print head is scanned by the carriage, and is the direction orthogonal to the nozzle row of the print head chip. The Y direction is parallel to the nozzle row of the recording tape and is the direction in which the recording paper is fed. FIG. 8 shows an embodiment in which four recording head chips are arranged on the head frame that constitutes the recording head. In this embodiment, the recording nozzle pitch is 360 dpi,
The half pitch is about 35 μm.

First, the first recording head chip C1 serving as a reference is attached to the recording head frame F. Next, the second recording head chip C2 is arranged by shifting the distance L by 35 μm in the X direction. Further, a third recording head chip C3, which is arranged in parallel with the reference chip C1 by 2 L in the X direction and apart from the Y direction, is arranged in the recording head frame with a displacement of 35 μm in the Y direction. The recording head according to the present embodiment can be realized by disposing the fourth chip C4 at a position 3 L away from each other with a shift of 35 μm in the X direction and 35 μm in the Y direction. Further, the positional relationship between the first to fourth recording head chips C1 to C4 may be any position, and the shifting directions may be opposite.

Next, FIG. 9 shows a schematic diagram for explaining the printing method by the recording head in this embodiment. In this embodiment, the print head chip has a nozzle pitch of 360 dpi, and the print dot D1 of the first chip C1 is 360 dp.
It will be printed on the recording grid of i. Next, since the recording dots S2 of the second chip C2 are provided with a shift of 35 μm in the X direction, they are printed on a 360-dpi recording grid with a shift of 35 μm from the position of the recording dots D1 of the first chip C1. Also, the recording dot D3 of the third chip C3 is Y
Since it is provided with a 35 μm offset in the direction, 360
It is printed on the recording grid of dpi. Similarly, since the recording dots D4 of the fourth recording head chip C4 are provided with a shift of 35 μm in both the X and Y directions, 360 dp
It is printed on the recording grid of i. Like this, four 36
High density recording of 720 dpi can be easily achieved by using the 0 dpi recording head chip.

The present invention is not limited to 360 dpi, but may be 180 dpi, 200 dpi, 300 dpi, 40 dpi.
It is effective at any recording density such as 0 dpi. In addition, in the present embodiment, 360 dpi is shifted by half pitch to 7
Although it is set to 20 dpi, 360 dpi may be shifted by ⅓ pitch to use 9 pitches to set 1080 dpi, and in this case, it is possible to achieve more effective densification.

[Embodiment 2] FIG. 10 shows another embodiment of the present invention.

In FIG. 10, the nozzle row direction is divided into m parts, and each print head chip is divided by a with respect to the nozzle chip a.
/ M each, and m recording head chips are attached to the recording head frame to form one set, and n sets of similar combinations are arranged in parallel on the recording frame.
This is a head capable of recording by setting the timing of the recording signal so that the recording dots can be printed by shifting each by a / n on the recording paper, and forming an m × n dot matrix in units of pitch a.

Next, the bleeding rate of the ink used in this recording head with respect to the recording paper is represented by N (= R / r) {R; dot diameter on recording paper, r; radius of ejection droplet},
When the specific gravity of the ink is ρ (cm ³ / g), the ejection amount w (g) of each recording head chip is

[0092]

[Equation 1]

A design which is almost the same as or more than that is required.

As a result, the dots of each recording head chip always intersect with the recording dots located on the diagonal of the recording grid, and good printing is always possible.

The recording head in this embodiment performs recording by being assembled with high precision.
As long as it is an exchange type, there may be some displacement due to variations in the mounting of the recording heads or manufacturing variations between the recording heads. In this case, in order to improve the image quality with even higher accuracy, the initial setting signal of the recording device is used to record on the recording paper first when the head is attached. Then, by inputting this timing to the recording device by the timing input means of the recording device and recording at the above timing until the recording head is replaced thereafter, higher image quality recording becomes possible.

[Embodiment 3] A third embodiment of the recording apparatus of the present invention will be described with reference to FIGS. 8 and 9.

Since the present embodiment and the first embodiment have substantially the same components such as the recording head, the description of those parts will be omitted. Only the differences will be described below.

The recording method in each mode in this embodiment will be described.

First, in the high quality mode, the ink bleeding rate N (= R / r) (R; dot radius on recording paper,
r; radius of ink droplet) with respect to nozzle pitch a

[0100]

[Equation 2]

It is necessary to supply the recording liquid to the recording head by adjusting so that

In this embodiment, the bleeding rate N is 1.4.
The pressure conversion element and the nozzle were designed so that a was 360 dpi and a was 70.5 μm, and the ink droplet radius r was about 20 μm.

Further, the ink cartridge may be constructed as a separate body as shown in FIG. 6, but an ink cartridge constructed so that four chambers are integrated and each chamber communicates with each other may be used.

As described above, high quality printing of 720 dpi and relatively high speed printing are possible.

Next, the recording method for high-speed recording will be specifically described.

Recording is performed by using the recording head and supplying ink from an ink cartridge in which ink having a bleeding rate of 360 dpi is stored in each recording head chip.

That is, the bleeding rate N of the ink used at this time is
Is for nozzle pitch a

[0108]

(Equation 3)

Recording is performed by adjusting the ink so that.

In this embodiment, the bleeding rate N is 2.6.
The ink droplet radius r is designed to be 20 μm as described above.

In the recording at this time, since the recording dots shown in FIG. 9 are expanded for recording of 360 dpi, the first to the first recording of FIG.
The fourth recording head chips C1 to C4 are driven so as to share the recording grid of 360 dpi.

Therefore, since the recording speed is shared by each of the four chips, recording can be performed at a speed four times faster. In this embodiment, since each chip can record at 6.2 kHz, it can record at a speed of 172 cps.
High-speed recording of 688 cps is possible in this embodiment in which four chips are integrated.

Further, in the high speed mode of the present embodiment, since the ink bleeding rate is large, ink fixing is usually a problem when high speed recording is simply performed, but in the present embodiment, high speed fixing is performed. The image quality was further improved.

As described above, in high speed recording, 360 dpi printing based on each nozzle pitch can be performed and high speed recording of relatively high quality can be realized.

As shown in FIG. 9, when the recording signal timing of this embodiment is used, the recording dots of the respective recording head chips are displaced by about a half pitch during high speed recording, but a higher quality image is required. In such a case, it is possible to obtain a higher-quality recorded image by shifting the timing of the recording signal, that is, by correcting the deviation with respect to the recording direction during high-speed recording.

Next, a method of replacing the ink cartridge will be described.

A high-quality or high-speed ink cartridge has already been mounted on the recording apparatus, and when exchanging with another cartridge, different inks are used between the cartridges, so that a cleaning operation is required.

In this embodiment, after the ink cartridge is taken out of the carriage, the recovery pump provided in the recording apparatus is used to suck the residual ink remaining in the ink head and remove the ink from the head.

Next, a new ink cartridge is mounted on the carriage and joined to the ink supply port of the head.

Further, the recovery pump is used several times to replace the remaining ink with new ink, and the ink is further sucked to completely switch the ink in the head to new ink. Next, a test record is made, and if it is clean, the replacement work is terminated, but if the previous ink still remains and the bleeding is different, the recovery operation is repeated again until it becomes clean.

Although the above replacement work may be carried out by a person, it is desirable to detect the cleanliness optically and electrically and automatically.

Further, the ink cartridge of the present invention is provided with a means for detecting the electric conductivity of the ink in the tank, is provided outside the printer by judging the kind of the ink of the inserted cartridge by the conductivity, and Means are provided to provide a signal to an indicator that displays the cartridge type so that the user can identify what is installed. Further, there is also provided a switching means for automatically switching the image signals of 720 dpi and 360 dpi based on the signal and simultaneously switching the moving speed of the carriage.

The identification of the cartridge is performed by detecting an optical change of ink, by mechanical means provided in the cartridge, or by a label or a resistance sheet provided in the cartridge. May be.

[Fourth Embodiment] Next, a fourth embodiment of the recording apparatus of the present invention will be described.

The structure of this embodiment is almost the same as that of the third embodiment.

In the present embodiment, in monochrome recording and color recording, the ink bleeding rate N is changed to obtain a high quality recorded image. That is, the ink bleeding rate N during monochrome recording is adjusted so as to satisfy Expression 2 above, while the color bleeding rate N is adjusted so as to satisfy Expression 3 above in color recording. Therefore, the mode during monochrome recording corresponds to the high quality mode in the third embodiment, and the mode during color recording corresponds to the high speed mode in the third embodiment.

[Embodiment 5] In this embodiment, Embodiment 4 described above is used.
In addition to the above configuration, four kinds of dark and light inks of the same color are prepared for the YMCBk ink at the time of color recording, and the ink is supplied, so that the ink is 360 dpi,
It is possible to record four values.

As described above, multi-value (four-value) of 360 dpi
And 720 dpi have substantially the same amount of information that can be handled, but 360 dpi multi-valued can be used when it is desired to emphasize the smoothness of an image. In the case of 720 dpi, it can be used for high-quality printing that requires sharpness in image quality. It is possible to provide a recording apparatus having an advantage that both can be selected by an image.

(Others) The present invention is provided with a means (eg, electrothermal converter or laser beam) for generating thermal energy as energy used for ejecting ink, particularly 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 according to such a method, it is possible to achieve higher density and higher definition of recording.

Regarding its typical structure and principle, see, for example, US Pat. Nos. 4,723,129 and 4740.
It is preferable to use the basic principle disclosed in the specification of Japanese Patent No. 796. This method is a so-called on-demand type,
Although it can be applied to any type of continuous type, in particular, in the case of the on-demand type, it can be applied to a sheet holding liquid (ink) or an electrothermal converter arranged corresponding to the liquid path. By applying at least one drive signal corresponding to the recorded information and giving a rapid temperature rise exceeding the nucleate boiling, heat energy is generated in the electrothermal transducer, and film boiling occurs on the heat acting surface of the recording head. Liquid (ink) corresponding to this drive signal on a one-to-one basis.
This is effective because air bubbles inside can be formed. The liquid (ink) is ejected through the ejection opening by the growth and contraction of the bubble to form at least one droplet. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are performed immediately and appropriately, so that the ejection of a liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable. As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. 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 straight liquid passage or the right-angled 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.
A configuration using the specification of Japanese Patent 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.

Furthermore, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the maximum width of a recording medium that can be recorded by the recording apparatus. Such a recording head may have a configuration that satisfies the length by a combination of a plurality of recording heads or a configuration as one recording head integrally formed.

In addition, even in the case of the serial type as in the above example, the recording head fixed to the main body of the apparatus or the ink jet from the main body of the apparatus is electrically connected to the main body of the apparatus by mounting the recording head. The present invention is also effective when a replaceable chip-type recording head that can be supplied or a cartridge-type recording head in which an ink tank is integrally provided in the recording head itself is used.

Further, as the constitution of the recording apparatus of the present invention, it is preferable to add ejection recovery means of the recording head, preliminary auxiliary means, etc. because the effects of the present invention can be further stabilized. If these are specifically mentioned, the recording head is heated using capping means, cleaning means, pressurizing or suction means, an electrothermal transducer, another heating element or a combination thereof. Pre-heating means for performing the pre-heating and pre-discharging means for performing the discharging other than the recording can be used.

Regarding the type and 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 from the solid state of the ink 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 heat energy such as ink that is liquefied by applying heat 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 Publication No. 1260, it is also possible to adopt a form in which the sheet is opposed to the electrothermal converter in a state where it is held as a liquid or solid substance in the concave portion or 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 a form of the ink jet recording apparatus of the present invention, in addition to the one used as an image output terminal of information processing equipment 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.

[0138]

As described above, according to the present invention,
A plurality of inkjet recording head chips are offset by a half pitch with respect to each nozzle and fixed in the same frame, and recording is performed so that the adjacent nozzles are not affected by the high density and the configuration is relatively simple. Thus, it has become possible to easily provide a double-density recording head at low cost.

Further, it is possible to provide an ink jet recording head which can achieve a recording speed unchanged by mounting a plurality of heads.

Further, according to the present invention, a plurality of ink jet recording head chips displaced by a half pitch or more with respect to the reference nozzle are fixed to the same frame, and ink having a bleeding rate corresponding to the recording density of the nozzle pitch is stored. By replacing the ink cartridge with an ink cartridge that stores ink with a bleeding rate corresponding to half the nozzle pitch, a high-speed mode that always shows good quality and a high-quality mode that shows even higher resolution are realized. It is possible to

Further, according to the present invention, in a printer capable of using both color and monochrome, the printing speed is not reduced even when color recording is performed, and when monochrome is used, a high-quality image with double density compared to color is used. It has become possible to provide a recording device capable of printing. Further, it is also an important effect of the present invention that it is only necessary to replace an inexpensive ink cartridge instead of replacing an expensive inkjet head when recording in color and monochrome.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a head in an embodiment of a recording apparatus of the present invention.

FIG. 2 is a sectional view showing a main part of a head in an embodiment of the recording apparatus of the present invention.

FIG. 3 is an exploded perspective view showing an internal configuration of a head unit in an embodiment of the recording apparatus of the present invention.

FIG. 4 is an exploded perspective view showing an internal configuration of a head device unit frame in an embodiment of the recording apparatus of the present invention.

FIG. 5 is an exploded perspective view showing an internal configuration of a head device in an embodiment of the recording apparatus of the present invention.

FIG. 6 is a perspective view showing an external configuration of a head device assembly and an ink tank in an embodiment of the recording apparatus of the present invention.

FIG. 7 is a perspective view showing an internal configuration of a recording apparatus according to an embodiment of the present invention in a partially disassembled state.

FIG. 8 is a front view of the head in the embodiment of the recording apparatus of the present invention as viewed from the ejection port side.

9 is a plan view showing a matrix of recording dots ejected using the head shown in FIG.

FIG. 10 is a plan view showing a matrix of ejection nozzles formed on the ejection surface of the head in one embodiment of the recording apparatus of the present invention.

[Explanation of symbols]

IJH inkjet head 1 heater board 2 grooved top plate 3 support substrate 4 orifice plate 5 ink supply member 6 booster spring 7 ink chamber 8 ink paths 10a, 10b gap 100 heater board 200 wiring board 300 support 400 orifice plate 500 presser spring 600 Ink supply member 700 Filter 1300 Top plate 1600 Conduit 2200 Ink supply pipe 2500, 2600 Positioning protrusion 4000 Unit frame 4500 Relay connector 5000 Ink tank C ₁ First recording head chip C ₂ Second recording head chip C ₃ Third Recording head chip C ₄ Fourth recording head chip D ₁ First recording dot D ₂ Second recording dot D ₃ Third recording dot D ₄ Fourth recording dot

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B41J 2/485 B41J 3/12 G

Claims (42)

[Claims] 1. A plurality of recording head chips, which are mounted on a carriage of a recording apparatus and used by scanning, and in which a plurality of ejection openings for ejecting ink are arranged, are arranged so as to be offset from each other in the scanning direction. In the ink jet recording head, the ejection port array of a predetermined recording head chip in the recording head chips is used as a reference, and at least one ejection port array in another recording head chip is shifted by a predetermined pitch in the ejection port array direction. And the ejection port arrays of at least one other recording head chip of the reference recording head chip are arranged at equal intervals between the recording head chips in the scanning direction by the predetermined pitch. An inkjet recording head characterized by being offset. 2. The recording head chips in the same group of the recording heads are sequentially arranged stepwise from the reference recording head chip, and the distance between adjacent groups is within the same group. 2. The ink jet recording head according to claim 1, wherein the distance between the recording head chips is the same. 3. Each of the recording head chips has a flow passage provided corresponding to the ejection port, and an ejection energy generating element provided corresponding to the flow passage and generating energy for ejecting ink. The inkjet recording head according to claim 1, further comprising: 4. The discharge energy generating element is a heating resistor that generates heat energy.
3. The ink jet recording head according to item 1. 5. The print head chip has a built-in shift register and a transistor for receiving an external signal for driving and outputting a signal for driving an ejection energy generating element. 1. The inkjet recording head according to 1. 6. The recording head chip, when arranged at a predetermined position of the frame, is fixed to the predetermined position by adhering and sealing without coming into contact with the frame. 1. The inkjet recording head according to 1. 7. The plurality of recording head chips are integrally provided with a portion for contacting an electrical contact portion on the recording head chip to receive an external signal from the recording device, and for supplying an electrical signal. The inkjet recording head according to claim 1, further comprising a relay connector for receiving the relay connector. 8. The ink jet recording head according to claim 1, wherein the number of the recording head chips is four. 9. The ink jet recording head according to claim 1, wherein the number of the recording head chips is nine. 10. The ink jet recording head according to claim 8, wherein different kinds of liquids are supplied to the respective recording head chips. 11. The predetermined pitch is 1 / the discharge port pitch.
2. The inkjet recording head according to claim 1, wherein the inkjet recording head is 2. 12. The predetermined pitch is 1 / the discharge port pitch.
The inkjet recording head according to claim 1, wherein the inkjet recording head is 3. 13. The plurality of recording head chips,
9. The ink jet recording head according to claim 8, wherein four types of recording head chips to which inks of the same color are respectively supplied are arranged. 14. An inkjet head cartridge comprising: the inkjet recording head according to claim 1; and an ink container for supplying ink corresponding to each recording head chip of the inkjet recording head. 15. A recording apparatus comprising: the inkjet recording head according to claim 1; and a carriage for mounting the inkjet recording head and scanning the same. 16. A reference printhead chip on a line connecting a plurality of print dots from respective nozzles of the reference printhead chip as the inkjet printhead moves in the scanning direction. 16. The signal adjusting mechanism according to claim 15, further comprising a signal adjusting mechanism for adjusting an external signal to the recording head so as to eject recording dots from the nozzles of other recording head chips in the same group. Recording device. 17. The signal adjusting mechanism first determines whether or not a position of a recording dot formed by recording performed in an initial setting state is ejected to a predetermined position, and if the ejection is not performed, an external signal is output. The recording apparatus according to claim 16, further comprising position adjusting means for adjusting the position of the recording dot. 18. A plurality of the ink jet recording heads are arranged on the carriage so as to be exchangeable, and an ink tank for supplying ink to a recording head chip of each recording head is exchangeable on the carriage. The recording apparatus according to claim 15, wherein the recording apparatus is provided. 19. The recording apparatus according to claim 15, wherein the ejection amount of the inkjet recording head is set corresponding to a half pitch of a predetermined pitch of nozzles of the recording head chip. 20. A nozzle having an ejection port for ejecting a plurality of inks, the nozzle being in communication with each ejection port, wherein the ink is ejected by the energy generated by an energy generating element provided in each nozzle. Ink cartridges each having at least 4 systems for supplying the same recording liquid to the respective recording parts are provided, and high-speed recording and high-quality recording can be selected by exchanging the ink cartridges. A recording device characterized by. 21. The recording apparatus according to claim 20, wherein recording is performed at double density when recording at high quality recording, as compared with recording density at high speed recording. 22. The bleeding rate of the recording liquid in the ink cartridge at the time of high-speed recording is larger than that of the recording liquid in the ink cartridge at the time of high-quality recording. 22. The recording device according to claim 21, wherein the recording device is a recording medium. 23. An external signal for driving is received by each recording portion of a recording head in which the plurality of recording portions are fixed on the same frame and integrated, and a signal for driving an ejection energy generating element is received. 21. The recording apparatus according to claim 20, wherein a shift register for outputting and a transistor are incorporated. 24. The recording apparatus according to claim 20, wherein the inkjet recording head is the inkjet recording head of claim 1. 25. When replacing a recording mode by replacing the ink cartridge on a carriage on which the ink cartridge is detachably mounted, a recovery operation function of cleaning ink in the recording head during the replacement of the ink cartridge is provided. 21. The recording device according to claim 20, wherein the recording device is provided. 26. When replacing the ink jet recording head on the carriage, the ink cartridge is provided with a portion showing an attribute of each recording liquid, and the ink cartridge currently mounted in the recording apparatus main body can be identified. 21. It is provided as follows.
The recording device according to claim 1. 27. When an ink cartridge is mounted,
27. The recording apparatus according to claim 26, further comprising means for determining a portion indicating an attribute of the recording liquid and displaying a type of ink actually mounted. 28. The energy generating element is configured to convert an electric signal into heat energy, rapidly heat the inside of the nozzle to generate bubbles, and eject ink. Item 21. The recording device according to item 20. 29. A plurality of the ink jet recording heads are arranged on the carriage in a replaceable manner, and an ink tank for supplying ink to each of the recording head chips is replaceable on the carriage. 21. The recording device according to claim 20, wherein the recording device is disposed in the recording medium. 30. The recording apparatus according to claim 20, wherein the moving speed of the carriage is variable by replacing the ink cartridge. 31. A nozzle having an ejection port for ejecting a plurality of inks, comprising a nozzle communicating with each ejection port,
At least four ink jet recording parts for ejecting ink are provided by the energy generated by the energy generating elements provided in each of these nozzles, and each recording liquid is supplied differently from the case where the same recording liquid is supplied for recording. The recording device is characterized in that it is possible to select whether or not to record. 32. The recording apparatus according to claim 31, wherein the recording density when recording with the same recording liquid is higher than the recording density when recording with different recording liquids. 33. The recording liquid for recording with the different recording liquid is composed of four colors of Y, M, C, and Bk, and the recording liquid for recording with the same recording liquid is Bk. The recording device according to claim 32. 34. The recording liquid when recording with the different recording liquid is composed of dark and light inks of the same color, and is the same as the recording liquid when recording with the same recording liquid.
The recording device according to claim 1. 35. A bleed rate of a recording liquid when recording with a different recording liquid is increased as compared with a recording liquid when recording with the same recording liquid.
The recording device according to claim 1. 36. An external signal for driving is received by each recording portion of a recording head in which the plurality of recording portions are fixed on the same frame and integrated, and a signal for driving an energy generating element is output. 33. The recording device according to claim 32, comprising a shift register and a transistor. 37. The recording portion is composed of four portions, and the other recording portions are arranged and fixed on the same frame so as to be displaced from each other by half of the nozzle pitch on the recording image with reference to the first recording portion. The recording device according to claim 36. 38. By exchanging the ink cartridge on the carriage on which the ink cartridge including the recording portion is detachably mounted, the same recording liquid and a different recording liquid are exchanged, and the ink in the recording head is changed during the exchange. 33. The recording apparatus according to claim 32, further comprising a recovery operation function for cleaning the. 39. The ink cartridge to be replaced on the carriage is provided with a portion showing an attribute of each recording liquid, and the ink cartridge actually mounted in the recording apparatus main body can be identified. 39. The recording device according to claim 38, which is characterized in that 40. The device according to claim 39, further comprising means for determining a portion showing an attribute of the recording liquid when an ink cartridge is mounted and displaying a state of the ink actually mounted. Recording device. 41. The energy generating element is configured to convert an electric signal into heat energy, rapidly heat the inside of the nozzle, generate bubbles, and eject ink. The recording device according to claim 31. 42. A plurality of the recording heads are arranged on the carriage so as to be replaceable, and an ink tank for supplying ink to a recording head chip of each recording head is replaceable on the carriage. The recording device according to claim 31, wherein the recording device is arranged in