JP3984766B2 - Recording head and recording apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording head with high heat dissipation efficiency and a recording apparatus using the recording head. The present invention is particularly suitable as a recording head having a heat generating portion such as an ink jet recording head that discharges ink using thermal energy, and a recording apparatus such as an ink jet recording apparatus using the recording head.
[0002]
[Prior art]
Conventionally, an image is recorded by selectively ejecting ink droplets from a plurality of ink ejection ports formed in an ink jet recording head based on recording data and attaching the ink droplets to a recording surface of a recording medium. Inkjet recording apparatuses are in practical use. In such an ink jet recording apparatus, the serial scan type has a configuration in which an ink jet recording head is mounted on a carriage portion that is moved in the main scanning direction that intersects the conveyance direction (sub scanning direction) of the recording medium. ing.
[0003]
An ink jet recording head called a side shooter type is configured, for example, as shown in FIG. Reference numeral 1001 denotes an ink supply unit to which an ink tank IT is attached. Reference numeral 1002 denotes an input terminal unit which is electrically connected to a carriage unit (not shown) and receives a drive control signal group from the carriage unit. The ink supply unit 1001 and the input terminal unit 1002 constitute a main body unit 1003. Reference numeral 1004 denotes a recording element substrate which is bonded to a bonded portion in the ink supply unit 1001 of the main body 1003. Reference numeral 1005 denotes a printed wiring board which is electrically connected to the recording element substrate 1004 and supplies a drive control signal group from the input terminal portion 1002.
[0004]
FIG. 2 is an enlarged cross-sectional view of a main part taken along line XX ′ in FIG. As shown in the figure, the ink supply unit 1001 in the main body 1003 is resin-molded integrally with an aluminum alloy block piece 2001. The ink supply unit 1001 is provided with an ink supply path 2002 for introducing ink from the ink tank IT. One opening end portion (upper opening end portion in FIG. 2) of the ink supply path 2002 is open at the bonded surface 2003 including the exposed portion outside the block piece 2001.
[0005]
FIG. 3 is an enlarged cross-sectional view of the recording element substrate 1004 along the line XX ′ in FIG. In FIG. 3, reference numeral 3002 denotes a substrate, and an ink supply opening 3001 communicating with one opening end of the ink supply path 2002 is formed. Reference numeral 3005 denotes a partition member for forming a plurality of ink branch supply paths 3004. Each ink branch supply path 3004 has a plurality of heating resistance elements (electrothermal converters) 3003 formed on the substrate 3002 as an ink heating unit. It is provided corresponding to. Reference numeral 3007 denotes an orifice plate, in which a plurality of ink discharge ports 3006 facing the heating resistor elements 3003 in the substrate 3002 are formed in two rows in parallel.
[0006]
In the substrate 3002, for example, a thin film is formed on a silicon material having a thickness of 0.5 to 1.0 mm. The ink supply opening 3001 is formed on the surface of the substrate 3002 that is bonded to the bonded surface 2003 (see FIG. 2) of the ink supply unit 1001 by an adhesive. The ink supply opening 3001 extends as shown in FIG. 4A, and the extending direction is along the arrangement direction of the ink discharge ports 3006 as shown in FIG. 4B. The heating resistance elements 3003 are formed in two rows in parallel on both side portions (left and right portions in FIG. 3) sandwiching the ink supply opening 3001. In general, a protective film (not shown) having excellent ink resistance is formed on the heating resistor element 3003. The plurality of ink branch supply paths 3004 formed by the partition wall member 3005 guides the ink supplied through the ink supply opening 3001 to the corresponding heating resistance element 3003. A printed wiring board 3009 as shown in FIG. 5 is connected to each electrode 3008 on the board 3002. The printed circuit board 3009 is formed with a recording element substrate housing portion 3010 on which the recording element substrate 1004 is disposed and a terminal portion 3011 disposed on the input terminal portion 1002 in FIG.
[0007]
In the ink jet recording head configured as described above, a drive control signal is supplied to each heating resistance element 3003 in the recording element substrate 1004 through the printed wiring board 3009. When the heating resistance element 3003 generates heat in response to the drive control signal, the ink introduced through the ink branch supply path 3004 is heated to generate bubbles due to the film boiling phenomenon, and the ink is discharged as the bubbles expand. The ink droplets are ejected from the outlet 3006. The ejected ink droplets land on the recording medium to form an image. Since such an ink jet recording system uses the ink film boiling phenomenon, temperature management of the recording head itself including the ink and the recording element substrate 1004 is important.
[0008]
Conventionally, a recording apparatus using such a recording head uses the recording head by monitoring the temperature of the recording head and setting a driving condition corresponding to the temperature. In addition, in order to protect the recording head and prevent deterioration in recording quality, control is performed such that when the temperature of the recording head exceeds a predetermined threshold, the recording operation is temporarily interrupted to cool the recording head. And so on.
[0009]
[Problems to be solved by the invention]
By the way, in the ink jet recording apparatus using the ink jet recording head as described above, in recent years, there has been an increasing demand for high image quality and high definition recording comparable to silver halide photography. Therefore, for example, an apparatus that can use cyan, magenta, black, and yellow inks for photo printing with different dye concentrations has been provided. In such a printing apparatus that supports photo grade printing, the number of types of ink to be used increases, and when the recording speed is taken into consideration, it is necessary to secure a certain number of nozzles and recording width for each color ink. Become. Therefore, for example, in a recording head in which six recording element substrates corresponding to six colors of ink of black, cyan, magenta, yellow, photocyan, and photomagenta are integrally incorporated, the temperature rise during ink droplet ejection is remarkably high. Become.
[0010]
In order to suppress the temperature rise of the recording head, it is necessary to increase the efficiency of transferring the heat energy generated by the heating resistor element to the ink or the heat dissipation capability of the recording head.
[0011]
Regarding the former transfer efficiency of thermal energy, it is effective to reduce the distance between the heating resistor element and the ink, that is, to thin the protective film on the heating resistor element. However, when the protective film is simply made thin, problems such as coverage of an Al layer as an electrode wiring, pinhole defects, and reliability as a protective film of the drive IC section are caused. Therefore, it is conceivable to thin only the protective film near the heating resistor element. However, in this method, it is necessary to form the protective film in two layers, so that an extra film forming chamber is required, and the mask and the process for patterning the first or second film are increased. There are manufacturing problems.
[0012]
On the other hand, with respect to the latter heat dissipation capability, there are methods such as arranging a heat dissipation member of the recording head or using a cooling fan. These methods increase the heat radiation from the recording head, thereby allowing the recording head to be cooled without difficult control. However, when the ink droplets fly from the ejection port of the recording head, a minute ink mist that forms satellite dots on the recording medium is generated, so that the ink mist continues to adhere to the heat radiating member. When a large amount adheres, there is a problem that the adhering matter falls on a recording medium such as recording paper and the recorded image becomes dirty. In addition, if such deposits do not fall on the recording medium but fall on the platen or the recording medium discharge roller and adhere, the dirt on the back surface of the recording medium or the recording apparatus main body This causes a problem that the recording quality is deteriorated. Further, when a cooling fan is used, it winds up a fine and lightweight ink mist, which causes the same problem. Regarding the problem caused by such ink mist, for example, Japanese Patent Application Laid-Open No. 7-17037 proposes a method of removing an excess ink spray by providing an air suction device. However, when such an air suction device is used, the device configuration is increased in size and noise is increased. Furthermore, not only the ink mist is sucked but also an air flow that fluctuates the main ink droplet for forming the original image, and the landing position of the main ink droplet on the recording medium is changed from the original position. There is a problem of shifting.
[0013]
An object of the present invention is to provide a recording head with high heat dissipation efficiency and a recording apparatus using the recording head.
[0014]
Another object of the present invention is to provide an ink jet recording head capable of ejecting ink, in which the influence of ink mist generated during use can be avoided and the reliability can be improved, and the use of the same. It is to provide a recording apparatus.
[0015]
[Means for Solving the Problems]
The recording head of the present invention includes a recording element substrate provided with a plurality of recording elements in a recording head main body, and the recording element is driven while the recording head main body is moved at a position facing the recording medium. Thus, in the recording head capable of recording an image on the recording medium, the recording element ejects ink droplets using thermal energy generated by an electrothermal transducer, and the recording element substrate is The recording head body is provided with a support member that receives heat generated by the recording element , and an air flow path is formed in the recording head body to generate an air flow as the recording head body moves during a recording operation. this which was to expose the support member inside the air flow passage, in the interior of the air flow passage, avoiding the exposed portion of the support member, with an absorbent capable of absorbing body of ink mist The features.
[0016]
The recording apparatus of the present invention is a recording apparatus capable of recording an image on the recording medium by driving the recording head while moving the recording head at a position facing the recording medium. The above recording head is used.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
FIG. 8 is a schematic perspective view for explaining an example of the ink jet recording apparatus 100 in which the ink jet recording head 5001 of the present invention can be used. The carriage 101 in the recording apparatus 100 is slidably guided along the main scanning direction indicated by an arrow A by two guide shafts 104 and 105 extending in parallel. The carriage 101 is reciprocated in the main scanning direction by a drive motor (both not shown) via a transmission mechanism such as a belt. A recording head 5001 is mounted on the carriage 101. As will be described later, the recording head 5001 of this example is configured to accommodate three ink tanks and discharge ink introduced from the respective ink tanks from ink discharge ports.
[0019]
The paper 106 as a recording medium is inserted from the insertion port 111, the conveyance direction is finally reversed, and the paper 106 is conveyed to the lower part of the moving area of the carriage 101 by the feed roller 109. The recording head 5001 ejects ink droplets onto a recording area on the paper 106 supported by the platen 108 while moving in the main scanning direction. Images are sequentially recorded on the paper 106 by repeating the recording operation of the recording head 5001 and the conveyance of the paper 106 by a predetermined amount.
[0020]
A recovery system unit 110 that can face the recording head 5001 on the carriage 101 is provided at the left end of the movable area of the carriage 101. The recovery system unit 110 performs an operation of capping the ink discharge port of the recording head 5001 and a recovery operation of discharging ink that does not contribute to image recording by suction or the like from the ink discharge port. During the recovery operation of the recording head 5001, ink discharged from the recording head 5001, that is, ink that does not contribute to image recording, is received by an ink absorber provided in the recovery system unit 110.
[0021]
FIG. 6 is a perspective view of the main part of the recording head 5001. The coordinate axes X, Y, and Z in FIG. 6 are associated with the coordinate axes X, Y, and Z in FIG. FIG. 7 is an exploded perspective view in which the main part of the recording head 5001 in FIG. 6 is turned upside down.
[0022]
In the recording head 5001 of this example, three recording element substrates for discharging different inks are integrated. The same configuration can be made when four or more recording element substrates for ejecting different inks are integrated. The recording head 5001 of this example is an application example as a recording head called a side shooter type.
[0023]
In the recording head 5001, 5002 is an ink supply unit, and three ink tanks for storing different inks are mounted. Reference numeral 5003 denotes an input terminal unit, which is electrically connected to the above-described carriage 101 (see FIG. 8) and inputs a drive control signal group from the carriage 101. The ink supply unit 5002, the input terminal unit 5003, and the like constitute a main body unit 5004. Reference numeral 5012 denotes an ink discharge unit, which is provided in a portion of the main body unit 5004 opposite to the ink supply unit 5002. The ink ejection unit 5012 includes recording element substrates 5013, 5014, and 5015 having ink ejection ports 5013A, 5014A, and 5015A for ejecting ink.
[0024]
The ink supply unit 5002 is provided with ink tank storage units 5006A, 5006B, and 5006C in which three ink tanks for storing different inks can be mounted, which are in the main scanning direction of the coordinate axis X as shown in FIG. Are arranged along. Between the ink tank accommodating portions 5006A, 5006B, and 5006C and the ink discharge portion 5012, air flow passages 5018 penetrating along the coordinate axis X are formed by both side wall portions 5002A and 5002B extending along the coordinate axis X. Has been. That is, the opening portions 5007A and 5007B are arranged on the coordinate axis X by the side wall portions 5002A and 5002B of the ink supply portion 5002 extending downward in FIG. 6 from the outer shell portion forming the ink tank accommodating portions 5006A, 5006B, and 5006C. An air flow passage 5018 opening in the direction is formed. On the inner surface of the air flow passage 5018, an absorber 5019 for absorbing ink mist generated at the time of ink discharge is disposed except for a surface of a support member 5008 of an ink discharge portion 5012 described later exposed in the air flow passage 5018. Has been.
[0025]
As the absorbent body 5019, a polymer absorbent body mainly composed of modified polyvinyl alcohol, a urethane sponge, a porous body composed mainly of PP (polypropylene) fiber, laminated paper, or the like can be used. In short, any one having absorption capacity and water retention capacity may be used. Further, the absorber 5019 may be formed of the same member as the ink absorber provided in the recovery system unit 110 (see FIG. 8) described above.
[0026]
As shown in FIG. 7, the main body portion 5004 is formed with a bonded portion 5009 in which the ink discharge portion 5012 is disposed. Opening ends 5011A, 5011B, and 5011C on one end side of the ink supply paths 5010A, 5010B, and 5010C are opened in the bonded portion 5009. The other end sides of the ink supply paths 5010A, 5010B, and 5010C are communicated with the ink tank housing portions 5006A, 5006B, and 5006C.
[0027]
In the ink discharge portion 5012, reference numeral 5008 denotes a support member that is joined to the joined portion 5009, and communication passages 5017a, 5017b that communicate with the open ends 5011A, 5011B, and 5011C of the ink supply paths 5010A, 5010B, and 5010C 5017c is formed. The upper surface of the support member 5008 is a second surface to be joined, and the recording element substrate 5013 on which a plurality of ink discharge ports 5013A, 5014A, and 5015A for discharging ink droplets are formed in a row. 5014 and 5015 are bonded together. The recording element substrates 5013, 5014, and 5015 are configured in the same manner as the recording element substrate 1004 of FIG. 3 described above, and generate thermal energy from the electrical resistance element (electrothermal transducer) based on the drive control signal, Ink droplets are ejected from the ink ejection ports 5013A, 5014A, and 5015A using the thermal energy as ink ejection energy.
[0028]
Reference numerals 5013p, 5014p, and 5015p denote printed wiring boards that supply drive control signal groups from the input terminal portion 5003 to the recording element boards 5013, 5014, and 5015, respectively. Reference numeral 5016 denotes a frame member disposed on the upper surface of the support member 5008, which positions the printed wiring boards 5013p, 5014p, and 5015p together with the recording element boards 5013, 5014, and 5015. As a material of the support member 5008, for example, alumina (Al203), aluminum nitride (AlN), silicon carbide (SiC), 3 silicon nitride (Si3N4), molybdenum (Mo), tungsten (W), or the like can be used. .
[0029]
The recording head 5001 configured as described above is mounted on the carriage 101 for use as shown in FIG. The ink supplied from the ink supply unit 5002 is introduced into the recording element substrates 5013, 5014, and 5015 from the ink supply paths 5010A, 5010B, and 5010C through the communication paths 5017a, 5017b, and 5017c, and based on the drive control signal. Thus, ink droplets are ejected from the ink ejection ports 5013A, 5014A, and 5015A.
[0030]
As described above, the recording head 5001 ejects ink droplets while moving in the main scanning direction of the arrow A along the coordinate axis X together with the carriage 101. At that time, the air relatively moves in the air flow passage 5018 extending along the main scanning direction, and the air flow in the main scanning direction in the air flow passage 5018 is exposed in the air flow passage 5018. It hits the surface of 5008. Since the support member 5008 supports the recording element substrates 5013, 5014, and 5015 having the heating resistance elements, the recording head 5001 can be moved without applying difficult control or the like by applying an air flow to the support member 5008. By utilizing the air flow that is sometimes generated, the heat dissipation efficiency of the recording head 5001 can be increased.
[0031]
Further, the absorber 5019 disposed in the air flow passage 5018 adsorbs minute ink mist generated when ink droplets are ejected. Therefore, the adverse effect of ink mist, that is, the deterioration of the ink ejection performance due to the contamination of the formation surfaces (face surfaces) of the ink ejection ports 5013A, 5014A and 5015A in the recording head 5001, the contamination of the recording medium such as the paper 106, and the recording It is possible to prevent contamination inside the apparatus. As a result, it is possible to improve the reliability of the recording apparatus and realize high-speed recording and high-quality recording.
[0032]
(Other embodiments)
The present invention is not limited only to the side shooter type ink jet recording head as described above, but includes various types of recording in addition to the edge shooter type ink jet recording head that ejects ink droplets in a direction substantially along the surface of the electric resistance element. The present invention can be applied to a wide range of recording heads equipped with elements. In addition, the shape and structure of the air flow passage are arbitrary, and in short, any structure that generates an air flow for increasing the heat radiation efficiency of the recording head when the recording head is moved may be used.
[0033]
(Other)
The present invention includes means (for example, an electrothermal converter, a laser beam, etc.) that generates thermal energy as energy used for ejecting ink, particularly in the ink jet recording system, and the ink is generated by the thermal energy. In the recording head and the recording apparatus of the type that causes the state change, excellent effects are brought about. This is because such a system can achieve high recording density and high definition.
[0034]
As for the typical configuration and principle, for example, those performed using the basic principle disclosed in US Pat. Nos. 4,723,129 and 4,740,796 are preferable. This method can be applied to both the so-called on-demand type and the continuous type. In particular, in the case of the on-demand type, it is arranged corresponding to the sheet or liquid path holding the liquid (ink). By applying at least one drive signal corresponding to the recorded information and giving a rapid temperature rise exceeding nucleate boiling to the electrothermal transducer, the thermal energy is generated in the electrothermal transducer, and the recording head This is effective because film boiling occurs on the heat acting surface of the liquid and, as a result, bubbles in the liquid (ink) corresponding to the drive signal on a one-to-one basis can be formed. By the growth and contraction of the bubbles, liquid (ink) is ejected through the ejection opening to form at least one droplet. It is more preferable that the drive signal has a pulse shape, since the bubble growth and contraction is performed immediately and appropriately, and thus it is possible to achieve discharge of a liquid (ink) having particularly excellent responsiveness. As this pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. Further excellent recording can be performed by employing the conditions described in US Pat. No. 4,313,124 of the invention relating to the temperature rise rate of the heat acting surface.
[0035]
As the configuration of the recording head, in addition to the combination configuration (straight liquid channel or right angle liquid channel) of the discharge port, the liquid channel, and the electrothermal transducer as disclosed in each of the above-mentioned specifications, the heat acting part The configurations using US Pat. No. 4,558,333 and US Pat. No. 4,459,600, which disclose the configuration in which the lens is disposed in the bending region, are also included in the present invention. In addition, for a plurality of electrothermal transducers, Japanese Patent Application Laid-Open No. Sho 59-123670 that discloses a configuration in which a common slit is used as a discharge portion of the electrothermal transducer or an aperture that absorbs pressure waves of thermal energy is provided. The effect of the present invention is also effective as a configuration based on Japanese Patent Application Laid-Open No. 59-138461 which discloses a configuration corresponding to the discharge unit. That is, whatever the form of the recording head is, according to the present invention, recording can be performed reliably and efficiently.
[0036]
In addition, the serial type as shown in the above example can be connected to the main body of the recording head or attached to the main body of the device so that it can be electrically connected to the main body of the device and ink can be supplied from the main body of the device. The present invention is also effective when a replaceable chip type recording head or a cartridge type recording head in which an ink tank is integrally provided in the recording head itself is used.
[0037]
In addition, it is preferable to add a recording head ejection recovery means, a preliminary auxiliary means, and the like as the configuration of the recording apparatus of the present invention, since the effects of the present invention can be further stabilized. Specifically, heating is performed using a capping unit, a cleaning unit, a pressurizing or suction unit, an electrothermal transducer, a heating element different from 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.
[0038]
Also, regarding the type or number of recording heads to be mounted, for example, a plurality of recording heads are provided corresponding to a plurality of inks having different recording colors and densities, in addition to one provided corresponding to a single color ink. May be used. That is, for example, as a recording mode of the recording apparatus, not only a recording mode of only a mainstream color such as black, but also a recording head may be configured integrally or by a combination of a plurality of different colors, Alternatively, the present invention is extremely effective for an apparatus having at least one of full-color recording modes by color mixing.
[0039]
In addition, in the embodiments of the present invention described above, the ink is described as a liquid. However, ink that is solidified at room temperature or lower and that softens or liquefies at room temperature may be used. In the ink jet method, the temperature of the ink itself is generally adjusted within a range of 30 ° C. or higher and 70 ° C. or lower to control the temperature of the ink so that it is in the stable discharge range. A liquid material may be used. In addition, it is solidified and heated in an untreated state in order to actively prevent the temperature rise caused by thermal energy from being used as the energy for changing the state of the ink from the solid state to the liquid state, or to prevent the ink from evaporating. You may use the ink which liquefies by. In any case, by applying thermal energy according to the application of thermal energy according to the recording signal, the ink is liquefied and liquid ink is ejected, or when it reaches the recording medium, it already starts to solidify. The present invention can also be applied to the case of using ink having the property of being liquefied for the first time. The ink in such a case is in a state of being held as a liquid or a solid in a porous sheet recess or through-hole as described in JP-A-54-56847 or JP-A-60-71260. Alternatively, the electrothermal converter may be opposed to the electrothermal converter. In the present invention, the most effective one for each of the above-described inks is to execute the above-described film boiling method.
[0040]
In addition, the ink jet recording apparatus according to the present invention may be used as an image output terminal of an information processing device such as a computer, a copying apparatus combined with a reader or the like, and a facsimile apparatus having a transmission / reception function. The thing etc. may be sufficient.
[0041]
【The invention's effect】
As described above, the present invention utilizes the air flow generated when the recording head is moved without requiring difficult control by exposing the support member that supports the recording element substrate to the outside of the recording head main body. Thus, the heat dissipation efficiency of the recording head can be increased.
[0042]
In addition, when the recording head is an ink jet recording head capable of discharging ink droplets, an ink discharge performance due to contamination of the ink discharge port forming surface is provided by providing an absorber for absorbing ink mist generated during use. Deterioration of the recording medium, contamination of the recording medium and the inside of the recording apparatus, and the like can be prevented, and the reliability of the recording apparatus can be improved to realize high-speed recording and high-quality recording.
[Brief description of the drawings]
FIG. 1 is a perspective view of a conventional recording head.
FIG. 2 is an enlarged cross-sectional view of a main part taken along line XX ′ in FIG.
FIG. 3 is an enlarged cross-sectional view of a recording element substrate portion taken along line XX ′ of FIG.
4A is a plan view of an ink supply opening portion in the recording element substrate of FIG. 3, and FIG. 4B is a plan view of an ink discharge port portion of the recording element substrate of FIG. 3;
5 is a perspective view of a printed wiring board connected to the recording element substrate of FIG. 3. FIG.
FIG. 6 is a perspective view of a main part of a recording head according to an embodiment of the invention.
7 is an exploded perspective view in which the recording head of FIG. 6 is turned upside down. FIG.
FIG. 8 is a schematic perspective view of a recording apparatus that can use the recording head of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Recording device 101 Carriage 104, 105 Guide shaft 5001 Recording head 5002 Ink supply part 5002A, 5002B Side wall part 5003 Input terminal part 5004 Main body part 5007A, 5007B Opening part 5008 Support members 5010A, 5010B, 5010C Ink supply path 5012 Ink discharge part 5013 5014, 5015 Recording element substrate 5016 Frame member 5018 Air flow passage 5019 Absorber

Claims (6)

A recording element substrate provided with a plurality of recording elements is provided in a recording head body, and the recording element is driven while the recording head body is moved at a position facing the recording medium, whereby the recording medium In a recording head capable of recording an image on
The recording element ejects ink droplets using thermal energy generated by an electrothermal transducer,
A support member for supporting the recording element substrate on the recording head body and receiving heat generated by the recording element;
In the recording head body, an air flow passage is formed in which an air flow is generated as the recording head body moves during a recording operation,
Exposing the support member inside the air flow passage;
A recording head comprising an absorber capable of absorbing ink mist while avoiding an exposed portion of the support member inside the air flow passage . The recording head according to claim 1 , wherein the air flow passage is formed so as to penetrate substantially along a moving direction of the recording head main body. The absorber, the recording head according to claim 1 or 2, characterized in that the modified polyvinyl alcohol from the absorbent polymer as a main component. The absorber, the recording head according to claim 1 or 2, characterized in that a porous body mainly composed of urethane sponge or polypropylene. Recording head according to claim 1 or 2 wherein the absorbent body is characterized in that it consists of laminated paper. In a recording apparatus capable of recording an image on the recording medium by driving the recording head while moving the recording head at a position facing the recording medium.
Wherein the recording head, a recording apparatus, which comprises using a recording head according to any one of claims 1 to 5.

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