JP2012196948A - Head cap member and inkjet recording apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent fall in negative pressure suction force and cost increase by preventing the deformation of a cap body during negative pressure suction to prevent a fall in airtightness even when the cap body is formed of an elastic material.SOLUTION: This head cap member includes a base member 2 having, in a tip surface, a cavity S communicating with a negative pressure lead-in hole 5; an annular reinforcing wall part 10 protrusively provided on the tip surface of the base member; the cap body 20 partially attached to the tip surface of the base member and comprising an annular elastic protruding member 25 whose tip part is projected forward from the tip part of the reinforcing wall part and whose inner peripheral surface is brought into close contact with the outer peripheral surface of the reinforcing wall part; and a pressing member 30. The cross-sectional shape along the thickness direction of the tip part of the elastic protruding member is nearlly angle shape having a top part 25a and inclined surfaces 25b, 25c, and the top part is in a position displaced outward from the wall thickness center of the elastic protruding member.

Description

  The present invention relates to an improvement in a head cap member that is mounted on a recording head of an ink jet recording apparatus and used to prevent nozzles from being dried or clogged.

The ink jet recording apparatus includes a cap member that covers the recording head during standby or during stoppage in order to prevent the recording head from drying or nozzle clogging.
5A, 5B, and 5C are an external perspective view, a cross-sectional view, and a plan view showing a configuration of a head cap member used in a conventional ink jet recording apparatus.
The head cap member 100 includes a cap main body 101 made of an elastic material such as rubber that is brought into contact with the front end surface (nozzle forming surface) 110 a of the recording head 110, and a negative pressure suction pipe 102 connected to the bottom surface of the cap main body 101. And a pipe 103 for releasing the atmosphere, and a cap body 104 and a cap holder 104 that contacts and holds the outer surfaces of the pipes 102 and 103. The cap body 101 has a box shape with an open front end surface. When the front end surface 110a of the recording head 110 is brought into contact so as to close the open portion, the nozzles arranged on the front end surface of the recording head serve as pipes. 102 and 103 so as to communicate with each other.
The negative pressure suction pipe 102 is connected to a pump (negative pressure generating means), and the air release pipe 103 is connected to outside air.

As shown in FIG. 5B, when the recording head 110 is in a standby state or stopped, the front end edge of the cap body 101 is pressed against the recording head front end surface 110a to seal the space S, thereby blocking the nozzle from the outside air. In addition to protecting the recording head, cleaning is performed by sucking ink inside the cap body 101 through the pipe 102 by a pump (not shown), thereby preventing clogging due to solidification of ink accompanying drying of the nozzle 111 of the recording head.
That is, when the recording head 110 is cleaned, the space S is hermetically sealed by bringing the nozzle forming surface of the recording head into close contact with the tip edge of the cap body 101, and the negative pressure suction pipe is sealed in the airtight space S. A negative pressure is introduced from 102 to discharge the ink in the nozzle. Thereafter, the space S is communicated with the atmosphere via the pipe 103 to return the inside of the space S to the atmospheric pressure, the cap body 101 is removed, and the nozzle forming surface of the recording head is wiped with a wiper to form a meniscus.

However, when the inside of the cap body 101 is sucked into a negative pressure through the pipe 102, the cap body 101 is made of an elastic material, so that the peripheral wall portion 101a of the cap body 101 is on the inner side as shown in FIG. There is a problem that the film is bent and deformed, and the adhesion to the front end surface of the recording head is deteriorated.
In order to deal with such a problem, Patent Document 1 (Japanese Patent Laid-Open No. 5-7432) discloses that a U-shaped reinforcing wall is fixed to the inner wall surface of a cap body made of an elastic member, or the cap body. A technique is disclosed in which a reinforcing portion having a thickened inner wall surface is formed and deformation of the cap accompanying suction is prevented by the reinforcing wall portion or the reinforcing portion.
However, in the case where the inner wall surface of the cap body having elasticity is provided with a reinforcing wall portion, ink enters between the inner wall surface of the cap body and the reinforcing wall portion and functions as a lubricant. The reinforcing wall part may come off from the cap body due to repeated attachment to and removal from the head. Moreover, in what forms the reinforcement part which thickened part thickness of the cap main body, in order to obtain the same internal volume, there exists a problem that the external dimension of a cap main body becomes large.

Further, in Patent Document 2 (Japanese Patent Laid-Open No. 4-14461), a cap member made of a plastic or metal material that press-contacts the recording head is incorporated inside the cap body, and the cap body is made of resin. A material made of a material and having a seal member attached to the front surface of the cap body is disclosed.
However, in the case where a core member made of a plastic or metal material is built in the cap body, the shape of the cap body becomes complicated, such as a bag shape, which is costly and the core member is inserted. Burrs and the like during molding are likely to occur in the space inside the cap body. In particular, when the burr is generated in the head direction, there is a problem that the flatness of the tip cannot be obtained and the adhesion is deteriorated. Further, when the cap body is made of a resin material and the seal member is attached to the front surface of the cap body, the adhesiveness between the resin material and the seal member is not sufficient, and the seal member is in close contact with the recording head side. May peel from the cap body.

Japanese Patent Application Laid-Open No. 9-70979 discloses a technique in which a cap body made of an elastic member is integrally formed with a cap holder so that the cap holder is covered with the cap body.
However, similarly to the conventional example shown in FIG. 5, when the inside of the cap body is set to a negative pressure, there is a problem that the cap body is elastically deformed and adhesion to the ink jet head is deteriorated.

As described above, in the conventional head cap member, the structure for preventing the deformation of the cap body when the inside of the cap body is sucked with a negative pressure is not sufficient, and the negative pressure suction force is increased due to a decrease in airtightness. There was no problem that the cost would be high.
The present invention has been made in view of the above-described problems, and even when the cap body is made of an elastic material, the cap body is prevented from being deformed during negative pressure suction to prevent a decrease in airtightness. An object of the present invention is to provide a head cap member of an ink jet recording apparatus that can prevent a decrease in negative pressure suction force and an increase in cost.

In order to achieve the above object, a head cap member according to a first aspect of the present invention is a head cap member that comes into contact with the nozzle forming surface of an ink jet recording head at the tip, and includes a negative pressure introducing hole, an atmospheric pressure introducing hole, A base member having a communicating space at its distal end surface, an annular reinforcing wall portion protruding from the distal end surface of the base member along the outer peripheral edge of the void, and an outer peripheral surface and an inner periphery of the reinforcing wall portion A cap main body provided with an annular elastic convex member having a distal end projecting further forward than the distal end of the reinforcing wall portion in close contact with the surface, and a part of which is attached to the distal end surface of the base member; A pressing member that holds and holds a part of the cap body between the tip surface of the base member, and the cross-sectional shape along the thickness direction of the tip portion of the elastic convex member has a top portion and a top portion of the top portion. A mountain with an inclined surface provided on both sides. Without a top portion of the elastic convex member is characterized in that than the thickness center of the elastic convex member is in a position offset to the outside.
The front end of the seal portion (the front end of the elastic convex member) of the cap body is continuous in an annular shape and has a mountain shape in cross section, and at least the top of the mountain shape is shifted outward from the central thickness portion of the mountain shape. Therefore, when the negative pressure is introduced into the void with the elastic convex member tip in close contact with the nozzle forming surface of the recording head, the peak of the mountain shape is prevented from being deformed inward, and negative pressure leakage is reliably prevented. it can. In particular, since the inside of the elastic convex member is reinforced by the reinforcing wall portion, it is possible to effectively prevent the inward deformation, so that the elastic convex member is prevented from forming inward bending deformation wrinkles over time. Is done.

A head cap member according to a second aspect of the present invention is a head cap member that abuts against the nozzle forming surface of an ink jet recording head at the tip, and has a space communicating with the negative pressure introduction hole and the atmospheric pressure introduction hole at the tip surface. The base member, the annular reinforcing wall portion protruding from the front end surface of the base member along the outer peripheral edge of the space, and the tip end in close contact with the outer peripheral surface and the inner peripheral surface of the reinforcing wall portion A cap main body provided with an annular elastic convex member that protrudes further forward than the front end of the reinforcing wall, and a part of the cap main body is attached to the front end surface of the base member; and a front end surface of the base member A pressing member that holds and holds a part of the cap body therebetween, and the cross-sectional shape along the thickness direction of the distal end portion of the elastic convex member is connected to the top portion and both sides of the top portion, respectively. And the elastic convex member. Top portion, characterized in that in a position offset inward than the thickness center of the elastic convex member.
The front end of the seal part (the front end of the elastic convex member) of the cap body is annularly continuous and has a mountain shape in cross section, and at least the top of the mountain shape is shifted inward from the thick central portion of the mountain shape. For this reason, when the atmospheric pressure is introduced into the void with the tip of the elastic convex member in close contact with the nozzle forming surface of the recording head (when the pressure is returned to the atmospheric pressure), the top portion can be prevented from being deformed to the outside. It is possible to reliably prevent leakage of atmospheric pressure that is equivalent to atmospheric pressure. In particular, since the inner side of the elastic convex member is reinforced by the reinforcing wall portion, the outward deformation can be effectively prevented.

The invention according to claim 3 is characterized in that an annular convex portion that continuously extends in an annular shape along the peripheral edge of the space is provided on the bottom surface of the cap main body in contact with the tip end surface of the base member. .
Due to the presence of the annular convex portion, it is possible to prevent leakage of negative pressure and atmospheric pressure at the joint surface between the base member and the cap body.
According to a fourth aspect of the present invention, the cap body and the pressing member are made of metal.
By making these members made of metal, deformation of the elastic convex member can be effectively prevented. For this reason, it is possible to increase the suction force when the negative pressure is introduced, and it is possible to prevent the deformation of the cap body due to the suction, and the configuration is simple and the cost is low.

The invention according to claim 5 is characterized in that the cap body and the pressing member are made of a resin harder than the elastic convex member.
By making these members made of hard resin, deformation of the elastic convex member can be effectively prevented. Therefore, it is possible to increase the suction force, to prevent the cap body from being deformed due to the suction, and to simplify the configuration and the cost.
The invention according to claim 6 is characterized in that the base member, the cap body, and the pressing member are integrally formed.
These may be integrated by injection molding. Since these are integrally molded, the suction force can be increased, the deformation of the cap body accompanying the suction can be prevented, the configuration is simple, and the cost is further reduced.
An ink jet recording apparatus according to a seventh aspect of the invention includes the head cap member according to any one of the first to sixth aspects and a recording head.

  According to the present invention, even when the cap main body is made of an elastic material, the cap main body is prevented from being deformed at the time of negative pressure suction to prevent a decrease in airtightness, a negative pressure suction force is reduced, and Cost increase can be prevented.

(A) And (b) is the external appearance perspective view of the head cap member of the inkjet recording device which concerns on one Embodiment of this invention, and AA sectional drawing. (A) And (b) is the principal part enlarged view of FIG.1 (b), and the principal part enlarged view of a cap main body. It is sectional drawing of the deformation | transformation embodiment of this invention. It is a principal part longitudinal cross-sectional view of the head cap member which concerns on other embodiment of this invention. (A), (b), and (c) are the external appearance perspective view, sectional drawing, and top view which show the structure of the head cap member used for the conventional inkjet recording device.

The present invention will be described below with reference to the accompanying drawings.
1A and 1B are an external perspective view and an AA cross-sectional view of a head cap member of an ink jet recording apparatus according to an embodiment of the present invention, and FIGS. 2A and 2B are diagrams. It is the principal part enlarged view of 1 (b), and the principal part enlarged view of a cap main body.
The head cap member 1 of the present invention is attached to and detached from an ink jet recording head 50 having a nozzle 51 on the tip surface (nozzle forming surface) 50a, and the nozzle 51 is negatively pressurized when closely attached to the tip surface 50a of the recording head. It is means for communicating with the introduction hole 5 and an air release hole (not shown).
The head cap member 1 includes a base member 2 provided with a void 6 communicating with the negative pressure introduction hole 5 and the air release hole on the distal end surface, and a base member distal end surface along the outer peripheral edge of the outer opening 6 a of the void 6. A continuous annular reinforcing wall portion (rib = cap holder) 10 projecting from 2a and the tip end portion in front of the tip end portion of the reinforcing wall portion in close contact with the outer peripheral surface and inner peripheral surface of the reinforcing wall portion 10 The cap main body 20 is provided between the cap main body 20 provided with the elastic convex member 25 protruded to the base and a part (clamped portion) 21 attached to the base member front end surface 2a and the front end surface 2a of the base member. And a pressing member 30 that is fixed to the base member by a bolt (not shown) in a state where the pressed portion 21 that is a part of the pressing member 21 is pressed.
Bolt holes 35a are formed in the front end surface 2a of the base member, and bolt mounting holes 35b and 35c are formed through the cap body 20 and the position where the cap member 20 communicates with the bolt holes 35a. The cap body 20 and the pressing member 30 can be fixed on the base member 2 by screwing bolts (not shown) in a state where the bolt holes 35a and the respective bolt mounting holes 35b and 35c are communicated.

The reinforcing wall portion 10 is made of a material harder than the elastic convex member 25, such as metal, hard resin, etc., thereby preventing the elastic convex member 25 from being excessively deformed to the inside (negative pressure introduction hole side). Yes. Since the protruding length L of the reinforcing wall portion 10 is set so that the tip portion of the reinforcing wall portion is retracted rearward from the tip portion of the elastic convex member 25, the reinforcing wall portion 10 is in a position protruding from the tip portion of the reinforcing wall portion. The tip of a certain elastic convex member 25 can be elastically deformed and brought into close contact with the recording head when pressed.
As shown in the modification of FIG. 3, the base member 2 is composed of a base member main body 2A and a reinforcing member 2B provided with a reinforcing wall portion 10, and the reinforcing member 2B is composed of a front end surface of the base member main body 2A and a cap. Bolts may be clamped between the main body 20 and the body 20. In the case of such a configuration, the reinforcing member 2B can be made of a hard material, and the base member body 2A can be made of an arbitrary material.

The pressing member 30 is a means for holding the cap main body 20 made of an elastic material between the distal end surface of the base member 2 and needs to have a predetermined rigidity. Therefore, it is made of a metal or a resin material having a predetermined hardness. The thickness T1 of the presser member 30 is such that the front end surface of the presser member 30 is retracted rearward from the front end of the reinforcing wall 10 when it is attached on the clamped pressure portion 21 of the cap body 20 as illustrated. Set to a certain level.
The cap main body 20 and the pressing member 30 may be assembled to the base member 2 later, or may be integrally formed in a mold.
Further, the position of the distal end portion of the reinforcing wall portion 10 and the position of the distal end surface of the pressing member 30 may be set to the same protruding position, or the position of the distal end surface of the pressing member 30 is located ahead of the distal end portion of the reinforcing wall portion 10. You may make it project. However, when a negative pressure is introduced into the space S, when the tip of the elastic convex member 25 is in compression contact with the nozzle forming surface of the recording head and is compressed and deformed, the nozzle forming surface does not come into contact with the reinforcing wall or the pressing member. Of course, it is necessary to set the dimensions.

The characteristic configuration of the head cap member 1 according to the present embodiment is such that the cross-sectional shape along the thickness direction of the tip portion of the elastic convex member 25 is continuously provided on the top portion 25a and on both sides of the top portion (in a mountain shape). A substantially mountain shape provided with inclined surfaces 25b and 25c (inclined downward), and the position of the top portion 25a of the elastic convex member is a position displaced to the outside OUT from the thickness center portion C of the elastic convex member. It is in. That is, the tip of the elastic convex member is less likely to be deformed inward because the thickness of the outer portion of the thickness center portion C is thicker than the thickness of the inner portion.
Note that the position of the top portion 25a of the elastic convex member is a position shifted to the outside OUT from the thickness center portion C of the elastic convex member is that the boundary between the top portion and the inclined surface 25b is the thickness center portion as shown in the figure. It does not mean that it coincides with C, and includes a case where the central portion C is slightly located on the inclined surface 25b side or the inclined surface 25c side.

Since the cross-sectional shape of the distal end portion of the elastic convex member 25 is configured in this way, the structure is difficult to be deformed inward.
Further, the bottom surface of the cap body 20 in contact with the front end surface 2 a of the base member 2 is provided with an annular convex portion 27 extending annularly (continuously in the circumferential direction) along the peripheral edge of the space 6 so as to be airtight. The structure which raised is also characteristic. The front end surface 2a of the base member in contact with the annular convex portion 27 may be a flat surface, or an annular groove 2b for closely fitting the annular convex portion 27 on the front end surface 2a may be formed.
In the head cap member 1 configured as described above, when a negative pressure is introduced into the space 6 from the negative pressure introduction hole 5 in a state in which the front end surface 50a of the recording head 50 is in pressure contact with the front end portion of the elastic convex member 25. Sufficient suction force can be exhibited without leakage of negative pressure. In addition, since the distal end portion of the elastic convex member 25 having a shape that hardly deforms inward is further prevented from being deformed inward by the reinforcing wall portion 10, the elastic convex member is prevented from being deformed inward when negative pressure is introduced. Thus, it is possible to prevent the deformation defect as shown in FIG. For this reason, due to the deformation of the elastic convex member, negative pressure leakage does not occur when contacting the front end surface of the recording head. Such a structure is simple and the manufacturing cost is low.

Next, FIG. 4 is a longitudinal sectional view of an essential part of a head cap member according to another embodiment of the present invention. The same parts as those in the first embodiment will be described with the same reference numerals.
The characteristic configuration of the head cap member 1 according to the present embodiment is such that the cross-sectional shape along the thickness direction of the tip portion of the elastic convex member 25 is continuously provided on the top portion 25a and on both sides of the top portion (in a mountain shape). A substantially chevron with inclined surfaces 25b and 25c (inclined downward), and the position of the top portion 25a of the elastic convex member is a position displaced to the inner side IN from the thickness central portion C of the elastic convex member. It is in. That is, the tip of the elastic convex member is less likely to deform outward because the thickness of the inner portion of the thickness center portion C is thicker than the thickness of the outer portion.
Note that the position of the top portion 25a of the elastic convex member is a position displaced to the inner side IN from the thickness center portion C of the elastic convex member means that the boundary between the top portion and the inclined surface 25c is the thickness center portion as shown in the figure. It does not mean that it coincides with C, and includes a case where the central portion C is slightly located on the inclined surface 25b side or the inclined surface 25c side.
In this way, the shape of the tip portion of the elastic convex member 25 is not easily deformed outward.

The head cap member 1 is used when negative pressure and atmospheric pressure are applied to the nozzle forming surface of the recording head.
In the head cap member 1 configured as described above, even when atmospheric pressure is applied from an atmospheric pressure introduction hole (not shown) in a state where the tip of the elastic convex member 25 is in close contact with the nozzle forming surface of the recording head, elasticity The tip of the convex member can be strongly pressed against the nozzle forming surface of the recording head. Moreover, the pressing member 30 guides the outer peripheral surface of the elastic convex member 25 so as not to be greatly deformed outward. That is, the reinforcing wall portion 10 prevents the elastic convex member 25 from deforming inward, and the outward deformation is prevented by the shape of the elastic convex member 25 itself and the reinforcing function of the pressing member 30. Such a configuration is simple and can be realized at low cost.

The present invention having the above configuration has the following effects.
First, the front end of the seal part (the front end of the elastic convex member) of the cap body is continuous in an annular shape and has a mountain shape in cross section, and at least the top of the mountain shape is shifted to the outside from the thick central portion of the mountain shape. Therefore, when the negative pressure is introduced into the void with the elastic convex member tip in close contact with the nozzle forming surface of the recording head, the peak of the mountain shape is prevented from being deformed inward, and negative pressure leakage is reliably prevented. it can. In particular, since the inside of the elastic convex member is reinforced by the reinforcing wall portion, it is possible to effectively prevent the inward deformation, so that the elastic convex member is prevented from forming inward bending deformation wrinkles over time. Is done.
Next, the front end of the seal part (the front end of the elastic convex member) of the cap body is continuous in an annular shape and the cross-sectional shape is a mountain shape, and at least the top of the mountain shape is displaced inward from the central thickness portion of the mountain shape. . For this reason, when the atmospheric pressure is introduced into the void with the tip of the elastic convex member in close contact with the nozzle forming surface of the recording head (when the pressure is returned to the atmospheric pressure), the top portion can be prevented from being deformed to the outside. Leakage of atmospheric pressure in the space equivalent to atmospheric pressure can be reliably prevented. In particular, since the inner side of the elastic convex member is reinforced by the reinforcing wall portion, the outward deformation can be effectively prevented.

Next, an annular convex portion that continuously extends in an annular shape along the peripheral edge of the void was provided on the bottom surface of the cap main body in contact with the tip end surface of the base member. For this reason, the presence of the annular convex portion can prevent leakage of negative pressure and atmospheric pressure at the joint surface between the base member and the cap body.
Next, deformation of the elastic convex member can be effectively prevented by making the cap body and the pressing member metal. That is, the suction force can be increased when the negative pressure is introduced, the deformation of the cap body due to the suction can be prevented, and the configuration is simple and the cost is low.
Next, deformation of the elastic convex member can be effectively prevented by making the cap body and the pressing member made of hard resin. That is, the suction force can be increased, the deformation of the cap body accompanying the suction can be prevented, the configuration is simple, and the cost is reduced.

Next, by integrating the base member, the cap main body, and the presser member by injection molding, it becomes possible to increase the suction force, and it is possible to prevent the cap main body from being deformed due to suction, and the configuration It's simpler and cheaper. Specifically, for example, in a state where the base member and the presser member are assembled in the mold, the elastic material (rubber, resin) constituting the cap body is injected into the molding space and then solidified. Can be integrally molded.
Note that the head cap member according to the present invention can achieve the above-described excellent operational effects when applied to a recording head equipped in an ink jet recording apparatus.

DESCRIPTION OF SYMBOLS 1 ... Head cap member, 2 ... Base member, 2a ... Front end surface, 2b ... Groove, 2A ... Base member main body, 2B ... Reinforcement member, 5 ... Negative pressure introduction hole, 6 ... Space, 6a ... Outer opening part, 10 DESCRIPTION OF SYMBOLS ... Reinforcement wall part, 20 ... Cap main body, 21 ... Clamped part, 25 ... Elastic convex member, 25a ... Top part, 25b ... Inclined surface, 25c ... Inclined surface, 27 ... Annular convex part, 30 ... Holding member, 35a ... Bolt hole, 35b ... Bolt mounting hole, 50 ... Recording head, 50a ... End face (nozzle forming surface), 51 ... Nozzle

Japanese Patent Laid-Open No. 5-7432 JP-A-4-14461 JP-A-9-70979

Claims (7)

A head cap member that comes into contact with a nozzle forming surface of an ink jet recording head at a tip;
A base member having a negative pressure introduction hole and a space communicating with the atmospheric pressure introduction hole on the front end surface; and an annular reinforcing wall portion protruding from the front end surface of the base member along the outer peripheral edge of the space; An annular elastic convex member having a distal end projecting forward from the distal end of the reinforcing wall in a state in which the outer circumferential surface and the inner circumferential surface of the reinforcing wall are in close contact with each other. A cap body provided with a portion, and a pressing member that holds and holds a part of the cap body between the front end surface of the base member,
The cross-sectional shape along the thickness direction of the distal end portion of the elastic convex member has a substantially chevron shape including a top portion and inclined surfaces continuously provided on both sides of the top portion,
The head cap member according to claim 1, wherein a top portion of the elastic convex member is located at a position displaced outward from a thickness center portion of the elastic convex member. A head cap member that comes into contact with a nozzle forming surface of an ink jet recording head at a tip;
A base member having a negative pressure introduction hole and a space communicating with the atmospheric pressure introduction hole on the front end surface; and an annular reinforcing wall portion protruding from the front end surface of the base member along the outer peripheral edge of the space; An annular elastic convex member having a distal end projecting forward from the distal end of the reinforcing wall in a state in which the outer circumferential surface and the inner circumferential surface of the reinforcing wall are in close contact with each other. A cap body provided with a portion, and a pressing member that holds and holds a part of the cap body between the front end surface of the base member,
The cross-sectional shape along the thickness direction of the distal end portion of the elastic convex member has a substantially chevron shape including a top portion and inclined surfaces continuously provided on both sides of the top portion,
The head cap member according to claim 1, wherein a top portion of the elastic convex member is located at a position displaced inward from a thickness center portion of the elastic convex member.   The ring-shaped convex part extended in the ring shape along the peripheral edge of the said space | gap was projectedly provided in the bottom face of the said cap main body which contact | connects the front end surface of the said base member, The Claim 1 or 2 characterized by the above-mentioned. Head cap member.   The head cap member according to any one of claims 1 to 3, wherein the cap body and the pressing member are made of metal.   The head cap member according to claim 1, wherein the cap main body and the pressing member are made of a resin harder than the elastic convex member.   The head cap member according to any one of claims 1 to 5, wherein the base member, the cap body, and the pressing member are integrally formed.   An ink jet recording apparatus comprising: the head cap member according to any one of claims 1 to 6; and a recording head.

Images