JP4164275B2 - Ink jet recording apparatus and wiping method in the recording apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ink jet recording apparatus and a wiping method in the recording apparatus, and more particularly to a configuration of a blade used for wiping performed as part of a process for maintaining the ejection performance of a recording head that ejects ink.
[0002]
[Prior art]
The ink jet recording apparatus has advantages such as low noise, low running cost, easy size reduction and colorization, and is applied to printers, fax machines, copiers, and the like.
[0003]
The recording head used in this apparatus has an ejection port as an aperture for ejecting ink. In an inkjet recording apparatus, generally, an ink droplet is ejected from an ejection port by driving a recording head based on an ejection signal based on recording data sent from a host device such as a personal computer. As for the size of such an ejection port, for example, a circular one has a diameter of about several tens of μm. In recent years, as the quality of an image to be recorded and the like is improved, it is becoming smaller and higher in density.
[0004]
By the way, since the ink jet recording apparatus discharges ink from such a minute discharge port, the discharge port is likely to be clogged, and the ink fluidity (viscosity) is allowed to fluctuate relatively. The range is small. For this reason, in general, in an ink jet recording apparatus, the ink ejection performance of the recording head is maintained at a constant level in order to prevent clogging and increase in ink viscosity or to eliminate them when they occur. Recovery processing is performed.
[0005]
One of the recovery processes is so-called capping in which the cap covers the surface on which the ejection port of the recording head is formed when not recording. When ink is not ejected, such as during non-recording, the viscosity of the ink near the ejection port increases due to evaporation of the ink solvent according to the temperature and humidity of the environment in which the device is placed, or in extreme cases the ink May dry and solidify. Then, due to such thickening of ink, ejection failure and non-ejection such as a smaller ejection amount and deflection of the ejection direction occur, resulting in a decrease in recording quality. Capping is for preventing such a phenomenon.
[0006]
As another recovery process, when extreme thickening such as clogging or solidification occurs, so-called suction recovery process is performed to forcibly remove these. That is, the above-described cap is brought into contact with the surface of the recording head where the ejection port is disposed, and the inside of the cap is decompressed by a pump, and the ink having increased viscosity is ejected from the ejection port through the ejection port. There are two main types of pumps. One is a cylinder type, which generates a negative pressure as the piston moves, thereby obtaining a large negative pressure. The second is a tube pump, in which negative pressure is generated by the restoring force of the tube itself when the tube is squeezed with a roller.
[0007]
As another recovery process, so-called preliminary discharge is known. During recording, ink is not ejected from all ejection ports of the recording head, and depending on the recording data, there may be ejection ports that do not eject ink at all for a certain period of time. Such an ejection port does not remove ink that is thickening due to the fact that no ink is ejected, and further increases the degree of thickening. In order to prevent such a situation, for example, every time recording is performed for a certain time or a certain amount, ink is ejected from all or a part of the ejection ports of the recording head to a cap or the like. The preliminary ejection is performed to refresh the ink. When this preliminary discharge is performed in the cap, when the preliminary discharge amount reaches a certain amount, the above-described pump is operated to suck and discharge the ink in the cap.
[0008]
As the recovery process, in addition to the above-described recovery process using a cap, wiping for wiping the surface on which the ejection port of the recording head is disposed with a blade is known.
[0009]
On the surface of the recording head on which the ejection port is disposed, paper dust or dust generated from the recording paper facing the recording head, or ink mist generated by the ejected ink splashing back on the recording paper may adhere. In this case, when these paper dust or ink mist adheres to a minute ejection port, ink ejection failure or ejection failure may occur. In order to prevent this ejection failure, for example, when a certain amount of time has elapsed during recording or when a certain amount of recording has been performed, the blade is ejected from the recording head at a predetermined timing during recording. Wiping is performed in which a sliding operation is performed in contact with the exit arrangement surface. Thereby, paper dust and ink mist adhering to the said surface can be removed. In addition, this wiping may be performed according to a user's instruction operation even when the user observes image degradation due to ejection failure in a recorded image.
[0010]
The wiping is also performed in conjunction with the other recovery process described above. That is, in the preliminary ejection and suction recovery process, ink is ejected into the cap, or suction is performed by reducing the pressure in the cap while the cap is in contact with the ejection port arrangement surface of the recording head. As a result, the ink often adheres to the cap after these recovery processes. Then, the cap with the ink attached may come into contact with the ejection port arrangement surface of the recording head and transfer the ink to the arrangement surface in the next recovery process. For this reason, wiping is performed after the contact of the cap with the recording head is released.
[0011]
By the way, the configuration of the recording head, which is the direct target of the recovery processing described above, has recently improved the quality of recorded images, for example, improved density of black characters, etc., colorization, higher definition (high resolution), improved water resistance, etc. It is required to be compatible with.
[0012]
Generally, a serial type ink jet recording apparatus mounts a recording head on a carriage and ejects ink from the recording head in accordance with the reciprocation of the carriage to form dots on recording paper to perform recording. In this method, the recording head for satisfying the above-described demand for high-quality recording and realizing it at a low price is one in which the black ink to be ejected reacts with other color inks, and is insolubilized. It has a high-density discharge port array. An example of the configuration is shown in FIG.
[0013]
FIG. 8 is a diagram schematically showing the surface on which the ink discharge ports of the recording head are arranged. As shown in the drawing, the recording head 7 includes a black (Bk) ink discharge port array 23, a yellow (Y) ink discharge port array 24, a magenta (M) ink discharge port array 25, and a cyan (C) ink. Are arranged in parallel in the scanning direction of the recording head 7. In the same figure, for simplification of illustration, each discharge port is not shown individually, and an array of a plurality of discharge ports is shown as one line. The same applies to the subsequent drawings.
[0014]
The pitch between the discharge ports in each of the discharge port arrays is equivalent to 600 dpi (dot per inch) as the definition becomes higher, or 1200 dpi in the case of higher definition. Then, in order to make the recording head more compact and hence the apparatus more compact, the pitch between the ejection port arrays tends to be reduced. In addition, the arrangement width of the ejection openings for the respective color inks is about 3.5 mm and is configured with a relatively high density.
[0015]
Also, according to the demand for high-quality recording, as a recording head configuration, for example, an ink that causes a chemical reaction between black ink and another color ink from the viewpoint of improving water resistance and preventing bleeding between colors. It is known that this causes insolubilization of dyes and the like. For example, black ink has cationic properties, while other color inks have anionic properties. As a result, when black characters or the like are recorded, both are ionically bonded to insolubilize the coloring material such as a dye, thereby improving the water resistance of the recorded black characters and the like. Further, it is possible to prevent bleeding between the black recording area and the color recording area.
[0016]
[Problems to be solved by the invention]
However, when the recording head in which the black ink and the color ink to be ejected are insolubilized by mixing as described above is a compact recording head, the black ink ejection port array and the other color inks are accordingly changed. The pitch between the discharge port arrays is reduced, and the following problems may occur with respect to the wiping by the blade described above.
[0017]
As described above, wiping using a blade is performed to prevent ejection failure due to ink mist or the like adhering to the ejection port arrangement surface of the recording head. FIGS. 9A and 9B are schematic views showing a conventional example of a configuration for wiping. As shown in the figure, the operation of wiping by moving one blade 27 in the direction of the ejection port array of each ink is performed. This is to prevent black ink and other color inks that react and insolubilize with each other from being mixed by wiping. In other words, the portion of the blade 27 that wipes the black ink ejection port array 23 and the portion of the other color ink ejection port array 24, 25, 26 are not overlapped.
[0018]
However, even with such a configuration, when the ejection port arrangement surface of the recording head is wiped with one blade 27, the movement of the blade 27 is performed as indicated by reference numeral 28 in FIGS. 9A and 9B. As a result, both black ink and other color inks may be mixed near the center of the blade. As a result, an insolubilized material is generated due to the reaction, and the black ink may enter the color ink discharge port, or conversely, the color ink may enter the black ink discharge port. As a result, the insolubilized material may adhere to the vicinity of the discharge port or in the discharge port, resulting in discharge failure or non-discharge due to clogging.
[0019]
As shown in FIGS. 9A and 9B, a wiping configuration for preventing inks of different colors from collecting and mixing in the central portion of the blade is described in, for example, Japanese Patent Laid-Open No. 7-223321. Has been. That is, this publication describes that a blade is provided corresponding to the ejection port array for each color ink. More specifically, for the recording head in which the ejection port arrays for the respective color inks are different from the ejection port array shown in FIG. 8, there is an overlapping portion corresponding to each of the ejection port arrays. These two blades are provided with a blade having a “C” shape so that the wiped ink moves in the narrowing direction. As a result, it is possible to move the wiped inks of the respective colors to locations where the inks are not mixed with each other.
[0020]
However, since the wiping configuration performs the wiping operation in the direction orthogonal to the ejection port array and covers all the ejection ports, the “C” shape of the blade overlaps with the wiping direction as described above. Therefore, the ink by the central portion (in the case of the publication, ink of the same color) is mixed with each other. Further, when the blade described in the above publication is applied to a recording head having an ejection port array as shown in FIG. 8, the C-shaped corresponding to the ejection port arrays 23 to 26 of the respective color inks. Since the blades are provided, the interval between the ejection port arrays becomes large, which leads to a problem that the recording head cannot be made compact.
[0021]
The present invention has been made to solve the above-described conventional problems relating to wiping, and an object of the present invention is to make it possible to make the recording head compact and to react with each other to cause insolubilization. Ink jet recording apparatus in which, when wiping the discharge port arrangement surface in a recording head in which discharge ports for discharge are integrally provided, the ink wiped by wiping does not affect the other discharge port, and It is to provide a wiping method in a recording apparatus.
[0022]
[Means for Solving the Problems]
Therefore, in the present invention, of the first ink and the second ink that react with each other to cause insolubilization, the first ejection port array that ejects the first ink and the second ejection that ejects the second ink. In an ink jet recording apparatus that performs recording using a recording head in which an outlet row is arranged in parallel to a discharge port arrangement surface, a first blade that wipes the first discharge port row, and a second discharge port row The second blade to be wiped, the first blade and the second blade are held so that the first and second blades have a predetermined distance from each other, and are arranged in parallel during wiping. A blade holder that is movable in the discharge port arrangement direction of each of the first and second discharge port arrays, and the blade holder moves when the first blade and the second blade are wiped. The blade holder is disposed in the blade holder so as to open in the shape of a letter C toward the direction, and is located behind the first blade and the second blade during the wiping movement, and the discharge port arrangement surface A third blade for wiping a portion of the first and second blades corresponding to the predetermined distance is provided.
[0024]
Of the first ink and the second ink that react with each other to cause insolubility, a first ejection port array that ejects the first ink and a second ejection port array that ejects the second ink are provided. In a wiping method of an ink jet recording apparatus that performs recording using a recording head arranged in parallel to a discharge port arrangement surface, a first blade for wiping the first discharge port row and a wiping of the second discharge port row The second blade, the first blade and the second blade are held so that the first and second blades have a predetermined distance from each other, and are arranged in parallel during wiping. A step of preparing a blade holder movable in the discharge port arrangement direction of each of the first and second discharge port arrays, and opening in a C shape toward the direction of movement of the blade holder during wiping Wiping the first discharge port array and the second discharge port array with the first blade and the second blade arranged in the blade holder so as to be in a state; A portion of the third blade located behind the first blade and the second blade during the wiping movement and corresponding to the predetermined distance between the first and second blades on the discharge port arrangement surface And wiping.
[0025]
According to the above configuration, The first discharge port array is formed by the first blade and the second blade arranged in the blade holder so that the blade holder is opened in a C shape in the direction of movement of the blade holder during wiping. Since wiping the second outlet row There is a part of both inks etc. left on the discharge port arrangement surface without being wiped by each blade, but the remaining position corresponds to one end part of each blade having a predetermined distance from each other. It can be set to a position that is basically not mixed at the position to be.
[0026]
Further, the remaining ink, that is, the ink existing on the ejection port arrangement surface between the ejection ports of ink having different characteristics with respect to the above reaction, was provided to wipe the ejection port arrangement surface. Third Can be wiped with a blade.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0028]
(Embodiment 1)
FIG. 1 is a perspective view schematically showing a main part of an ink jet printer according to an embodiment of the present invention.
[0029]
In FIG. 1, a sheet 3 as a recording medium fed from an unillustrated auto sheet feeder is rotated by a driving force transmitted from a not-illustrated sheet feeding motor, respectively, and a pinch that is in pressure contact with the sheet feeding roller 1. The roller 2, the paper discharge roller 17, and the spur 18 are conveyed on the platen 4. In addition, illustration of the mechanism which supports the spur 18 rotatably is abbreviate | omitted in the figure.
[0030]
A scanning range by the recording head mounted on the carriage 5 is formed between the transport roller 1 and the paper discharge roller 17 and the like. That is, the carriage 5 operates in a main scanning direction orthogonal to the feeding direction of the paper 3 while being guided by the carriage shaft 6 by transmitting a driving force of a carriage motor (not shown) via a belt (not shown). During this operation, characters, images, and the like are recorded by ejecting ink downward from the ejection port for each color ink of the recording head 7 according to the recording data. Specifically, the carriage 5 is mounted with a recording head 7 in which an ejection port array for each color ink is integrated, and a black (Bk) for supplying each ink to the recording head above the recording head 7. ) An ink tank 8 for ink, an ink tank 9 for yellow (Y) ink, an ink tank 10 for magenta (M) ink, and an ink tank 11 for cyan (C) ink are mounted. In this embodiment, the recording head 7 uses a system in which bubbles are generated in the ink by the thermal energy generated by the heater using the electrothermal transducer, and the ink is ejected by the pressure of the bubbles.
[0031]
A recovery unit 19 is provided outside the scanning range for recording within the range in which the recording head 7 can move. As described above in the description of the prior art, the recovery unit 19 includes a cap and a pump for performing ink suction through the cap. In addition, the recovery unit 19 is provided with a wiping mechanism for wiping the ejection port arrangement surface of the recording head 7. For example, the carriage 5 moves to the position of the recovery unit 19 at the start of recording or every predetermined time during recording, whereby the above-described suction recovery processing, preliminary ejection, and wiping can be performed.
[0032]
The wiping mechanism of the present embodiment is configured to hold a blade group 21 including two blades that are opened in a C shape in the wiping direction and that have two blades that do not overlap and extend in a direction perpendicular to the same direction. The blade holder 20 is movable in the wiping direction (the direction indicated by the arrow C in the figure) and the opposite direction. At the time of wiping, the blade holder 20 is moved in the direction of arrow C by a recovery system motor (not shown), whereby each ejection port array of the recording head 7 is arranged by the blade group 21 as will be described later with reference to FIG. You can wipe the finished surface.
[0033]
FIG. 2 is a diagram schematically showing a surface (ejection port arrangement surface) 12 in which the ejection port arrays of the respective ink colors are arranged in the recording head 7, and shows a view A in FIG. As shown in FIG. 2, the ejection port array 13 that ejects Bk ink and the ejection port arrays 14, 15, and 16 that eject Y, M, and C inks are mutually connected. Arranged at intervals greater than the interval. Here, the Bk ink ejected from each ejection port of the ejection port array 13 is a cationic ink using a pigment as a coloring material. On the other hand, each of the Y, M, and C inks ejected by the ejection port arrays 14, 15, and 16 uses a dye and has an anionic property. These cationic ink and anionic ink are mixed to react with each other to cause insolubilization.
[0034]
In the present embodiment, when recording a black image such as a black character, cyan ink is ejected in addition to the black ink to cause the above insolubilization to improve the water resistance and density of the recorded image. The cyan ink ejection data need not be the same as the black ink ejection data, and may be data obtained by thinning out the black ejection data at a certain rate, for example.
[0035]
FIG. 3 is a diagram for explaining the relationship between each blade of the blade group 21 and each discharge port array, particularly when wiping the surface 12 on which each discharge port array shown in FIG. is there.
[0036]
As shown in FIG. 3, the blade 21a and the blade 21b in the blade group 21 are provided so as to be opened in a C shape with respect to the discharge port array at the time of wiping, and between the blade 21a and the blade 21b. These blades are not overlapped with a predetermined distance between them. That is, the blades 21a and 21b perform wiping while maintaining a constant angle θ with respect to the direction orthogonal to the discharge port array, of which the blade 21a wipes the portion where the discharge port array 13 is disposed, The surface on which the discharge port arrays 14, 15, 16 are disposed is wiped. As a result, the ink to be wiped moves toward one end of each of the blades 21a and 21b while moving downward in the drawing. As a result, a part of each ink is respectively located at a position corresponding to the one end of each of the blades 21a and 21b in a relatively wide central portion between the ejection port array 13 and the ejection port arrays 14, 15, and 16. Get away from the blade. Each ink separated from the blade extends in a direction perpendicular to the ejection port array and is wiped by the blade 21c disposed behind the blade 21a and the blade 21b.
[0037]
As described above, according to the present embodiment, some of the reactive inks may leave the blade and remain in the central portion, but each position corresponds to one end of each blade. They are far from each other and difficult to interact with. Also, depending on the amount of wiping and the distance between the ejection port array 13 and the ejection port arrays 14, 15, 16, there is a high possibility that insolubilization will occur due to contact or mixing. Since the ink is wiped by the blade 21c, the ink can be excluded from the discharge port arrangement surface 12. Further, it is not necessary to provide a blade for each discharge port, and the wiping configuration can be simplified.
[0038]
The material of each blade of the blade group 21 is preferably urethane, HNBR, EPDM, or the like.
[0039]
(Embodiment 2)
This embodiment has substantially the same configuration as that of the first embodiment described above with respect to wiping, but the number of blades is different.
[0040]
For example, this corresponds to the case where the reactivity between the Bk ink and the other color ink is stronger than that of the ink used in the first embodiment described above, and the blade group has six blades as shown in FIG. is there. In this blade group, blades 22 a and 22 c are provided corresponding to the Bk ink ejection port array 13, and blades 22 b and 22 d are provided corresponding to the color ink ejection port arrays 14, 15, and 16. That is, when the reactivity is strong, these inks easily react even with a small amount of contact, and the degree of insolubilization increases accordingly. Therefore, if there is a case where the reaction has already occurred in the middle of wiping and slightly insolubilized, it becomes difficult to scrape off even if it is wiped with a blade. For this reason, a pair of small “C” shaped blades 22c and 22d are provided after the first “C” shaped blades 21a and 21b, respectively. With this configuration, it is possible to scrape off the ink remaining on the arrangement surface 12 that easily reacts and is insolubilized. Further, the blades extending in the orthogonal direction are also provided with two blades 22e and 22f for finishing wiping.
[0041]
(Reference Example 1)
FIG. 5 illustrates the present invention. First reference example It is a figure which shows the inkjet printer concerning and is a figure similar to FIG. Book Reference example However, the difference from Embodiment 1 is that the blades constituting the blade group 21 are provided in parallel to the direction perpendicular to the wiping direction.
[0042]
like this And above As shown in the first and second embodiments, not only when the blade is provided with a predetermined angle θ with respect to the direction orthogonal to the wiping direction, but also when θ = 0 degrees Is also possible . In the case of this angle, the amount of movement of the ink toward one end of the blade is smaller than in the first and second embodiments. Therefore, the amount of ink mixed between the Y, M, and C color inks can be reduced.
[0043]
Figure 6 shows the book Reference example It is a figure which shows the arrangement | sequence of the blade group 21 of. As shown in the figure, the blade 21g and the blade 21h in the blade group 21 are provided so as to be parallel to the direction orthogonal to each discharge port array, and a predetermined distance is provided between the blade 21g and the blade 21h. These blades are made so as not to overlap.
[0044]
(Reference Example 2)
FIG. 7 illustrates the present invention. Second reference example It is a figure which shows the arrangement | sequence of the blade group 21 which concerns on the above, Reference example 1 In the same manner as described above, the blades are provided so as to be parallel to the direction orthogonal to each discharge port array, and a plurality of blades are provided as in the second embodiment.
[0045]
As shown in the figure, the blade group has six blades. In this blade group, blades 22 i and 22 k are provided corresponding to the Bk ink discharge port array 13, and blades 22 j and 22 l are provided corresponding to the color ink discharge port arrays 14, 15, and 16.
[0046]
(Other embodiments)
In each of the above embodiments, the pair of blades have the same angle, but the application of the present invention is not limited to this. For example, one of the pair of blades may be provided with a predetermined angle where one is 0 degree and the other is not 0 degree.
[0047]
【The invention's effect】
As is clear from the above description, according to the present invention, The first discharge port array is formed by the first blade and the second blade arranged in the blade holder so that the blade holder is opened in a C shape in the direction of movement of the blade holder during wiping. Since wiping the second outlet row There is a part of both inks etc. left on the discharge port arrangement surface without being wiped by each blade, but the remaining position corresponds to one end part of each blade having a predetermined distance from each other. It can be set to a position that is basically not mixed at the position to be.
[0048]
Further, the remaining ink, that is, the ink existing on the ejection port arrangement surface between the ejection ports of ink having different characteristics with respect to the above reaction, was provided to wipe the ejection port arrangement surface. Third Can be wiped with a blade.
[0049]
As a result, it is possible to prevent the reactive ink wiped by wiping from affecting each other ejection port with a particularly compact configuration, and a highly reliable inkjet that does not cause non-ejection or ejection failure by wiping. A recording apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a configuration of a main part of an ink jet printer according to an embodiment of the present invention.
FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and is a diagram illustrating the arrangement of the ejection port arrays for the respective color inks on the ejection port arrangement surface of the recording head.
3 is a diagram for explaining a relationship between each blade and a discharge port arrangement surface at the time of wiping by a blade group in the inkjet printer shown in FIG. 1; FIG.
FIG. 4 is a diagram illustrating a relationship between each blade and a discharge port arrangement surface when wiping with a blade group in the second embodiment of the present invention.
FIG. 5 shows the present invention. First reference example It is a perspective view which shows typically the structure of the principal part of the inkjet printer concerning.
6 is a diagram for explaining a relationship between each blade and a discharge port arrangement surface when wiping with a blade group in the ink jet printer shown in FIG. 5; FIG.
[Fig. 7] of the present invention. Second reference example It is a figure explaining the relationship between each blade in the case of wiping by the blade group in, and a discharge port arrangement | positioning surface.
FIG. 8 is a diagram illustrating an arrangement of ejection ports on an ejection port arrangement surface of a conventional recording head.
FIGS. 9A and 9B are a plan view and a side view, respectively, showing the relationship between the blade and the recording head when wiping with the blade in a conventional ink jet recording apparatus.
[Explanation of symbols]
1 Paper feed roller
2 Pinch roller
3 paper
4 Platen
5 Carriage
6 Carriage shaft
7 Recording head
8 Bk ink tank
9 Y ink tank
10 M ink tank
11 C ink tank
12 Discharge port installation surface
13 Bk ink ejection port array
14 Y ink ejection port array
15 M ink ejection port array
16 C ink ejection port array
17 Paper discharge roller
18 spurs
19 Recovery Unit
20 Blade holder
21 blade group
21a, 21b, 21c, 22a, 22b, 22c, 22d, 22e, 22f, 21g, 21h, 21i, 21j, 21k, 21l Blade

Claims (6)

Out of the first ink and the second ink that react with each other to cause insolubility, the first ejection port array that ejects the first ink and the second ejection port array that ejects the second ink are ejection ports. In an ink jet recording apparatus that performs recording using a recording head arranged in parallel to the arrangement surface,
A first blade for wiping the first discharge port array;
A second blade for wiping the second discharge port array;
The first and second discharge ports that hold the first blade and the second blade so that the first and second blades have a predetermined distance from each other and are arranged in parallel during wiping. A blade holder movable in the direction of the discharge port arrangement of each row;
With
The first blade and the second blade are arranged in the blade holder so that the blade holder is opened in a C shape in the direction in which the blade holder moves during wiping,
A third wiper is located behind the first blade and the second blade during the wiping movement, and wipes a portion corresponding to the predetermined interval between the first and second blades on the discharge port arrangement surface. An ink jet recording apparatus comprising the blade.   The inkjet recording apparatus according to claim 1, wherein the third blade is arranged in a direction orthogonal to the discharge port arrangement direction.   The first ejection port array includes an ejection port array that ejects black ink, and the second ejection port array ejects a yellow ink ejection port array, a magenta ink ejection port array, and cyan ink ejection. The inkjet recording apparatus according to claim 1, further comprising an ejection port array that performs the above-described operation.   The first ejection port array and the second ejection port array are more than the intervals between the ejection port array that ejects the yellow ink, the ejection port array that ejects the magenta ink, and the ejection port array that ejects the cyan ink. The inkjet recording apparatus according to claim 3, wherein a distance between the first discharge port row and the discharge port row closest to the first discharge port row is larger.   5. The method according to claim 1, wherein the first ink is a cationic ink using a pigment as a color material, and the second ink is an anionic ink using a dye as a color material. 2. An ink jet recording apparatus according to item 1. Out of the first ink and the second ink that react with each other to cause insolubility, the first ejection port array that ejects the first ink and the second ejection port array that ejects the second ink are ejection ports. In a wiping method of an ink jet recording apparatus that performs recording using a recording head arranged parallel to the arrangement surface,
A first blade for wiping the first discharge port array; a second blade for wiping the second discharge port array; the first blade and the second blade; Preparing a blade holder that is movable in the direction of the discharge port arrangement of each of the first and second discharge port arrays arranged in parallel during wiping. ,
The first blade and the second blade arranged in the blade holder so that the blade holder is opened in a C shape in the direction of movement of the blade holder during wiping. A step of wiping the discharge port array and the second discharge port array, and then the discharge port with the first blade and the third blade located behind the second blade during the wiping movement. Wiping a portion of the arrangement surface corresponding to the predetermined distance between the first and second blades.

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