JPH11334092A - Ink jet recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the effect of ink drop being scattered through repercushion of a blade. SOLUTION: A recovery tub 8 which can take an attitude facing the ejection opening face 3 of a recording head 1 can move along the direction of an arrow X2 . A blade 7 made of a resilient material stands on the bottom part of the tub 8 and an opening 8a is made at the base of the blade 7. The opening 8a is connected through a tube 9 with a suction pump 10. A long block member 6 made of a resilient material is provided at the upper fringe part of the tub 8. The block member 6 is curved to expand outward at the central part thereof the touches the ejection opening face 3 of the recording head 1 at the upper fringe part thereof on the outside thus enclosing the blade 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus provided with a recovery means for recovering the discharge characteristics of ink discharge ports for discharging ink.

[0002]

2. Description of the Related Art A conventional ink jet recording apparatus is provided with head recovery means having a structure as shown in FIGS. 7A and 7B, for example. The head recovery means is for preventing a discharge failure due to a foreign matter such as an ink droplet or dust attached to the discharge port surface at the time of recording by the recording apparatus, or an ink thickening in a non-discharged ink flow path. It is.

FIGS. 7 (a) and 7 (b) are partially cutaway front views showing an example of head recovery means in a conventional ink jet recording apparatus, and FIG. 7 (a) is an ink jet recording head using a blade. FIG. 7 shows a state before wiping of a surface including the discharge port (hereinafter, referred to as a discharge port surface).
(B) shows a state during wiping.

In FIGS. 7A and 7B, reference numeral 1 denotes
Reference numeral 00 denotes an ink jet recording head (hereinafter, simply referred to as a head), and reference numeral 101 denotes a discharge port surface as a surface including a plurality of discharge ports arranged in the longitudinal direction of the head 100.
In this example, the ejection port surface 101 of the head 100 faces downward. On the lower side of the head 100, a recovery tub 1 for receiving ink discharged from the ejection port of the head 100 is provided.
Numeral 02 is arranged so as to be movable in a direction parallel to the discharge port surface 101. A suction pump 103 for sucking the discharged ink received as ink relating to idle discharge from each discharge port of the head 100 is connected to the bottom of the recovery tub 102 via a tube 104. A blade 105 for wiping the ejection port surface 101 of the head 100 to remove ink droplets attached near the ejection port is provided upright on the upper part of the recovery tub 102. Is wiped by a blade 105, and an absorber 106 that absorbs ink droplets flowing down along the surface of the blade 105 itself is fixed.

In the conventional recovery sequence, first, as shown in FIG. 7A, ink is discharged from the discharge port of the head 100 toward the recovery tub 102 (idle discharge). The recovery tub 102 moves in the direction of the arrow X <b> 2 at a timing set in conjunction with the idle discharge, and the blade 105 wipes the discharge port surface 101 of the head 100. At this time, head 1
Since the discharge port surface 101 and the blade 105 have an overlap amount m (m> 0) in the vertical direction, when the recovery tub 102 moves in the direction of the arrow X2, the blade 105 is moved at a position m from the upper part thereof. Warping. The upper edge of the blade 105 in such a warped state is the head 10
The wiping can be performed by pressing the discharge port surface 101 of 0.

However, the warped state of the blade 105 is released when the blade 105 passes through the edge of the discharge port surface 101 that is being wiped. At the time of this release, the blade 10
Ink adhering to the upper edge of the ink jet head 5 scatters into the recording apparatus. In the worst case, the scattered ink may contaminate a recording paper or the like as a recording medium.

[0007] Such a phenomenon is more likely to occur as the number of ink droplets remaining on the ejection port surface 101 during wiping by the blade 105. Therefore, conventionally, ink is discharged from the ejection port of the head 100 toward the recovery tub 102. After that, by utilizing the phenomenon that the ink droplets left on the discharge port surface 101 before the wiping are drawn into the discharge port again by the pressure based on the head difference between the discharge port surface 101 and an ink tank (not shown). In the above sequence, a standby time for reducing the amount of ink droplets remaining on the ejection port surface 101 has been provided.

[0008]

However, if the above-described waiting time is provided, there is a possibility that foreign matter and the like in addition to the ink droplets may be drawn into the ejection port together with the ink droplets. Clogging may occur in a chamber or the like, and the discharge characteristics may be significantly reduced.

Further, as shown in FIGS. 7A and 7B, the ink droplets wiped at the upper edge of the blade 105 are caused to flow down and are absorbed by the absorber 106, thereby canceling the warped state of the blade 105. However, if the absorption capacity of the absorber 106 reaches a saturated state, the reduction in the amount of ink droplets cannot be maintained.

SUMMARY OF THE INVENTION It is an object of the present invention to minimize the influence of splashing of ink droplets due to rebound of a blade.

[0011]

In order to solve the above-mentioned problems, the present invention uses an ink jet recording head having a discharge port for discharging ink and a nozzle having an ink flow path communicating with the discharge port. In an ink jet recording apparatus for performing recording by using an ink jet recording head, a head recovery including an elastic wiping member for wiping a surface including the discharge port of the ink jet recording head, and a block member for at least blocking a scattering direction of the ink wiped by the wiping member Means are provided.

Here, the ink jet recording head may further include a tub-shaped member for receiving the ink discharged from the discharge port, and the wiping member and the block member may be mounted on the tub-shaped member.

Further, the block member may be formed of an elastic material. The trough-shaped member may be relatively movable in parallel with a plane including the discharge port of the inkjet recording head. That is, the trough-shaped member and the inkjet recording head are relatively movable, and either one or both may be movable.

[0014] The block member may be provided above the trough-shaped member, and an outer upper edge of the block member may be pressed against a surface including the discharge port of the ink jet recording head. The block member may be provided on an upper part of the trough-shaped member, and an outer upper edge of the block member may be pressed against a lower surface of a receiving member provided on a side surface of the inkjet recording head.

[0015] The wiping direction of the wiping member on the surface of the ink jet recording head including the discharge ports may be a direction intersecting the arrangement direction of the discharge ports of the ink jet recording head.

The ink jet recording head may include a discharge energy generating element for generating sufficient energy to discharge the ink from the discharge port, and the discharge energy generating element causes film boiling of the ink. May be provided with an electro-thermal conversion element for generating thermal energy used for discharge.

According to the present invention, the ink droplets scattered during or after wiping can be confined by keeping the wiping member in a sealed state, so that the ink droplets scatter, thereby contaminating the inside of the apparatus and contaminating printed matter. Can be reliably eliminated, and the degree of freedom in design can be increased.

Further, even after the ink is discharged from the discharge port, even if there are many residual ink droplets on the discharge port surface, the ink can be immediately wiped off. Can be omitted, and the possibility of foreign matter being drawn into the discharge port can be significantly reduced.

Further, since the wiping member and the upper opening of the trough-shaped member are integrally sealed, the necessity of disposing a conventionally used absorber is eliminated, and the space can be reduced. Further, even when the above-described absorber is used, an absorber having a large absolute saturation amount can be arranged near the wiping member.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the ink jet recording apparatus of the present invention will be described in detail with reference to the drawings.

(Embodiment 1) FIG. 1 is a schematic side view showing one embodiment of a head recovery means in an ink jet recording apparatus of the present invention.

In FIG. 1, reference numeral 1 denotes an ink jet recording head (hereinafter, simply referred to as a head), and reference numeral 3 denotes a plurality of discharge ports (not shown) arranged in the longitudinal direction of the head 1 (a direction perpendicular to the drawing). It is a discharge port surface as a surface including. The ejection port surface 3 is subjected to an ink repellent treatment so that the ejected ink droplets do not stay near the ejection port. In this ink repelling process, for example, the product name D
A water repellent such as EFENSA 7710 (manufactured by Dainippon Ink and Chemicals, Inc.) is suitably used as the ink repellent.

In this embodiment, the discharge port surface 3 of the head 1 faces downward. On the lower side of the head 1, a recovery tub 8 as a tub-shaped member for receiving ink discharged by idle discharge from the discharge port of the head 1 is arranged movably in a direction parallel to the discharge port surface 3. I have. An opening 8 a is formed at the bottom of the recovery tub 8, and a suction pump 10 for sucking discharged ink is connected to the opening 8 a via a tube 9. By wiping the ejection port surface 3 of the head 1 above the recovery tub 8, a blade 7 made of an elastic material for removing ink droplets attached near the ejection port is provided near the opening 8a. It is erected. For this reason,
The ink droplets wiped by the blade 7 are guided to the bottom of the recovery tub 8 along the blade 7 itself, and are further removed by suction by the suction pump 10 through the opening 8a and the tube 9.

The recovery tub 8 can be moved in the direction of arrow X2 by a drive mechanism described later, and two upper edges extending in a direction orthogonal to the direction of movement of the recovery tub 8 (direction of arrow X2) are elastically provided. An elongated block member 6 made of a material is provided. The block member 6 is curved so that only its central portion expands outward, and its outer upper edge is directed upward. For this reason, the outer upper edge of the block member 6 can come into contact with the discharge port surface 3 of the head 1.

By the way, if the outer upper edge of the block member 6 is at the stage where the blade 7 is wiping the center of the ejection port surface 3 of the head 1, the ejection port surface 3
, The blade 7 can be kept in a sealed state, but the outer upper edge of the block member 6 (the right side in FIG. 1) that moves in the direction of the arrow X2 before the blade 7 is closer to the blade 7. Also separates from the ejection port surface 3 of the head 1 first. However, when the block member 6 comes into contact with the discharge port surface 3 of the head 1, the block member 6 is slightly pushed downward against the upward urging force generated by the elasticity of the block member 6 itself, and When the block member 6 is separated from the discharge port surface 3, the urging force causes the block member 6 to slightly extend upward, and the upper edge of the block member 6 follows the shape of the side surface of the head 1 to maintain a sealed state with respect to the blade 7. be able to.

Therefore, while the airtight state of the block member 6 is maintained, the blade 7 completely completes the wiping of the discharge port surface 3 of the head 1, and the ink droplets which are likely to be generated at the end of the wiping are scattered. The movement speed of the recovery tub 8, the size and material of the block member 6, the size and material of the blade 7,
The positional relationship between the block member 6 and the blade 7 and the positional relationship between the block member 6 and the head 1 need to be determined as appropriate.

(Embodiment 2) FIGS. 2A and 2B
FIG. 6 is a schematic front view showing a head recovery unit in another embodiment of the ink jet recording apparatus according to another embodiment of the present invention, in which a part is cut away, and FIG. (B) shows a state during wiping.

The feature of this embodiment is that, unlike the previous embodiment, the receiving members 2 capable of making contact with the outer upper edge of the block member 6 are provided on both side surfaces of the head 1. It is in. These receiving members 2 are plate-shaped members extending in the horizontal direction.

In this embodiment, the outer upper edge of the block member 6 does not come into contact with the discharge port surface 3 of the head 1, and the outer upper edge of the block member 6 stays on the lower surface of the receiving member 2. The contact keeps the blade 7 sealed.

The shape of the receiving member 2 and the relative positional relationship with respect to the block member 6 and the blade 7 are appropriately determined from the viewpoint of maintaining a sealed state with respect to the blade.

Next, an example of an ink jet recording apparatus provided with the above-described head 1 and head recovery means will be described with reference to FIGS.

FIG. 3 is a schematic perspective view showing an embodiment of the ink jet recording apparatus of the present invention provided with the head recovery means shown in FIG. 1, and FIG. 4 is an ink jet recording apparatus of the present invention shown in FIG. It is a schematic front view showing an internal structure of one embodiment of a device.

In the figure, reference numeral 11 denotes an ink jet recording apparatus, reference numeral 12 denotes a feeder cover for storing cut paper as a recording medium, and reference numeral 13 denotes an upper portion for opening and closing a head station and a cut paper transport section described later. A cover 14 is a front cover for opening a tank for storing ink to be supplied to a head of a head station, which will be described later. An operation panel for setting, changing, and the like of an operation environment in the device 11.

As shown in FIG. 4, the head station is a long type ink jet recording head (hereinafter, referred to as a line head) in which a plurality of recording blocks are linearly arranged.
H are arranged at regular intervals parallel to each other in a direction perpendicular to the transport direction of the cut sheet. Specifically, the four color line heads H include a yellow line head Y, a magenta line head M, a cyan line head C, and a black line head K. As shown in FIG. 4, each line head H has a heat radiating portion 20 in order not to affect the image formation by the heat generated from the thermal energy generator in the recording element (not shown) due to the ink ejection. In addition, heat is rapidly diffused by a fan (not shown).

Below the station, the cut sheet is transported onto the stacker S by the transport unit V which transports the above-mentioned cut sheet at a constant speed toward the recording position of the line head H. I have.

Below the transport unit V, a tank portion T for storing exclusive ink supplied to each line head H is detachably fixed. Each line head H is provided with a corresponding recovery unit R. Specifically, the recovery unit R includes a yellow recovery unit Yo, a magenta recovery unit Mo, a cyan recovery unit Co, and a black recovery unit Ko.

Each of the recovery units R has a size enough to cover the discharge port surface of the line head H, an absorber (not shown) filled in the recovery tub, and protrudes from an upper portion of the recovery tub. In addition, it is roughly composed of a cap portion made of an elastic material that covers the periphery of the discharge port surface of the line head H, and a blade made of an elastic material reaching above the discharge port surface of the line head H near the cap portion. . The waste ink preliminarily or idlely discharged from the line head H to the absorber of the recovery unit R is appropriately sent to a tank (not shown) so as not to overflow from the recovery tub.

Next, referring to FIGS. 5 and 6, an example of a driving mechanism capable of performing the operation of the line head H and the operation of the recovery unit R will be described.

FIG. 5 is a schematic perspective view showing the relationship between the line head H and the recovery tub shown in FIG. 4, and FIG. 6 is an enlarged schematic perspective view showing the head recovery means shown in FIG. is there.

The line head H is preferably provided with a means (described later) for generating thermal energy as energy used for ink ejection, but is not limited thereto. Those with a body may also be used. Further, in this example, heads are separately provided for each color of ink, and a plurality of (four in this example) heads are arranged with their ejection ports facing downward.
They are integrally connected and held by a head holder 1100 which is a frame. The head H thus integrally held is suspended by a suspension device (not shown), and is constantly urged upward (in the direction of arrow Y1) by urging means (not shown) such as a spring.

On the other hand, the head motor 1110 is connected to the head holder 11 via a plurality of gears, a head drive shaft 1120 and the like.
The wires 1130 that are respectively stretched on the front side and the rear side (not shown) of the 00 are driven. Here, when the head drive shaft 1120 is rotated in the direction of the arrow (counterclockwise) in the figure by the head motor 1110, the wire 1130 is also moved, and the head holder 1100 is pushed down (in the direction of the arrow Y2) against the urging force. Can be Conversely, when the head drive shaft 1120 rotates clockwise in the drawing, the head holder 1100 moves upward (in the direction of arrow Y1) by the urging force.

An ink tank (both not shown) as an ink supply means for storing ink to be supplied is connected to each head H via a tube 1030.

Under such a head H, a recovery unit R for recovering the ejection performance can be sunk. The recovery unit R is used to keep the head H moist and retain excess ink.
It is slidably mounted on 150. This sliding mechanism will be described with reference to FIG.

The recovery unit R serving as a storage unit constituting a part of the recovery unit is provided with a slide shaft 1170 provided at an edge of the recovery plate 1150 via a guide holding unit 1160 provided at one edge thereof. The recovery unit R has a roller 1180 at its other edge.
Is attached. Therefore, the recovery unit R
It is slidable in the direction of arrow X1 or X2 in the figure. The recovery motor 1190 includes a plurality of gears, a recovery tub drive shaft 120.
0, the recovery unit R is driven via a rack 1220 provided at one end of the pinion gear 1210 and the recovery unit R in the sliding direction.

(Others) It should be noted that the present invention includes a means (for example, an electrothermal converter or a laser beam) for generating thermal energy as energy used for performing ink ejection, particularly in an ink jet recording system. An excellent effect is obtained in a recording head and a recording apparatus of a type in which the state of ink is changed by the thermal energy. This is because according to such a method, it is possible to achieve higher density and higher definition of recording.

The typical configuration and principle are described in, for example, US Pat. Nos. 4,723,129 and 4,740.
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. Further, if the conditions described in US Pat. No. 4,313,124 relating to the temperature rise rate of the heat acting surface are adopted, more excellent recording can be performed.

As the configuration of the recording head, in addition to the combination (straight liquid flow path or right-angle liquid flow path) of the combination of the discharge port, the liquid path, and the electrothermal converter as disclosed in the above-mentioned respective specifications, U.S. Pat. No. 4,558,333 and U.S. Pat. No. 44,558 which disclose 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 Application Publication No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of an electrothermal converter for a plurality of electrothermal converters, and an aperture for absorbing a pressure wave of thermal energy is provided. The effect of the present invention is effective even if the configuration is based on JP-A-59-138461, which discloses a configuration corresponding to a discharge unit. That is, according to the present invention, recording can be reliably and efficiently performed regardless of the form of the recording head.

Further, 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 on which a recording apparatus can record. 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 integrally formed recording head.

In addition, even in the case of the serial type as described above, the recording head fixed to the main body of the apparatus or the electric connection with the main body of the apparatus or the ink from the main body of the apparatus is attached to the main body of the apparatus. 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 provided integrally with the recording head itself is used.

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. 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.

The type and number of recording heads to be mounted are, for example, not only those provided for one color ink but also a plurality of inks having different recording colors and densities. A plurality may be provided. That is, for example, the printing mode of the printing apparatus is not limited to a printing mode of only a mainstream color such as black, but may be any of integrally forming a printing head or a combination of a plurality of printing heads. The present invention is also very effective for an apparatus provided with at least one of the recording modes of full color by color mixture.

In addition, in the embodiments of the present invention described above, the ink is described as a liquid. However, an ink which solidifies at room temperature or lower and which softens or liquefies at room temperature may be used. In general, the ink jet method generally controls the temperature of the ink itself within a range of 30 ° C. or more and 70 ° C. or less to control the temperature so that the viscosity of the ink is in a stable ejection range. Sometimes, the ink may be in a liquid state. In addition, in order to positively prevent temperature rise due to thermal energy by using it as energy for changing the state of the ink from a solid state to a liquid state, or to prevent evaporation of the ink, the ink is solidified in a standing state and heated. May be used. In any case, the application of heat energy causes the ink to be liquefied by the application of the heat energy according to the recording signal and the liquid ink to be ejected, or to start solidifying when it reaches the recording medium. The present invention is also applicable to a case where an ink having a property of liquefying for the first time is used. In such a case, the ink
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, the form of the ink jet recording apparatus of the present invention is not limited to the one used as an image output terminal of an information processing apparatus such as a computer, a copying apparatus combined with a reader or the like, and a facsimile apparatus having a transmission / reception function. It may take a form.

[0054]

As described above, according to the present invention,
By keeping the wiping member in a sealed state, ink droplets scattered during or after wiping can be confined. The above flexibility can be increased.

Further, even after the ink is discharged from the discharge port, even if there is a large amount of residual ink on the discharge port surface, the ink can be immediately wiped off. Can be omitted, and the possibility of foreign matter being drawn into the discharge port can be significantly reduced.

Further, since the wiping member and the upper opening of the tub-like member are integrally formed in a sealed state, it is not necessary to dispose a conventionally used absorber, and the space can be reduced. Further, even when the above-described absorber is used, an absorber having a large absolute saturation amount can be arranged near the wiping member.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of a head recovery unit in an ink jet recording apparatus of the present invention.

FIGS. 2 (a) and 2 (b) are schematic front views, partially cut away, showing another embodiment of a head recovery means in an ink jet recording apparatus according to the present invention, and FIG. The state before the wiping of the discharge port surface of the head is shown, and the state (b) shows the state during the wiping.

FIG. 3 is a schematic perspective view showing an embodiment of the ink jet recording apparatus of the present invention including the head recovery unit shown in FIG.

FIG. 4 is a schematic front view showing the internal structure of one embodiment of the ink jet recording apparatus of the present invention shown in FIG.

5 is a schematic perspective view showing a relationship between the line type recording head shown in FIG. 4 and a recovery tub.

FIG. 6 is a schematic perspective view showing an enlarged view of a head recovery unit shown in FIG. 5;

FIGS. 7 (a) and 7 (b) are schematic front views, partially cut away, showing an example of a head recovery unit in a conventional ink jet recording apparatus. FIG. 7 (a) is a discharge port of an ink jet recording head using a blade. The state before wiping of the surface is shown, and (b) shows the state during wiping.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 100 Ink-jet recording head 2 Receiving member 3, 101 Discharge port surface 6 Block member 7, 105 Blade 8, 102 Recovery tub 8a Opening 9, 104 Tube 10, 103 Suction pump 11 Ink-jet recording device 12 Feeder cover 13 Upper cover 14 Front cover 15 Switch unit 16 Operation panel 20 Heat radiating unit 106 Absorber 1030 Tube 1100 Head holder 1110 Head motor 1120 Head drive shaft 1130 Wire 1150 Recovery plate 1160 Guide holding unit 1170 Slide shaft 1180 Roller 1190 Recovery motor 1200 Recovery tub drive shaft 1210 Pinion Gear 1220 Rack

Claims (9)

[Claims] 1. An ink jet recording apparatus which performs recording using an ink jet recording head having a discharge port for discharging ink and a nozzle having an ink flow path communicating with the discharge port, wherein the discharge of the ink jet recording head is performed. An ink jet recording apparatus, comprising: a head recovery unit including an elastic wiping member for wiping a surface including an outlet, and a block member for blocking at least a scattering direction of the ink wiped by the wiping member. 2. The ink jet recording head according to claim 1, further comprising a trough-shaped member for receiving ink discharged from a discharge port of said ink jet recording head, wherein said trough-shaped member is provided with said wiping member and said block member. 2. The ink jet recording apparatus according to 1. 3. The ink jet recording apparatus according to claim 1, wherein the block member is formed of a material having elasticity. 4. An ink jet recording apparatus according to claim 1, wherein one or both of said tub member and said ink jet recording head are movable. 5. The ink jet recording head according to claim 5, wherein the block member is provided above the trough-shaped member, and an outer upper edge portion of the block member is pressed against a surface including the discharge port of the ink jet recording head. Item 5. An ink jet recording apparatus according to any one of Items 1 to 4. 6. The block member is provided on an upper portion of the trough-shaped member, and an outer upper edge of the block member is pressed against a lower surface of a receiving member provided on a side surface of the ink jet recording head. The ink jet recording apparatus according to any one of claims 1 to 4, wherein 7. A wiping direction of the wiping member with respect to a surface including the discharge port of the ink jet recording head,
The inkjet recording apparatus according to claim 1, wherein the direction is a direction that intersects a direction in which the ejection ports of the inkjet recording head are arranged. 8. The ink jet recording head according to claim 1, further comprising an ejection energy generating element for generating energy sufficient to eject ink from the ejection port. Inkjet recording device. 9. The discharge energy generating element according to claim 1, further comprising: an electrothermal conversion element for generating heat energy used for discharging the ink by causing film boiling of the ink. An inkjet recording apparatus according to any of the above items.