JP5239794B2 - Inkjet recording device - Google Patents

Description

  The present invention relates to an ink jet recording apparatus.

  2. Description of the Related Art Conventionally, an image recording apparatus using an inkjet method is known as an image recording unit that can record an image easily and inexpensively. An image recording apparatus using the ink jet system (hereinafter referred to as an ink jet recording apparatus) discharges minute ink droplets from a nozzle of the recording head onto a recording medium while scanning a carriage on which the recording head is mounted along a guide rail. Thus, a desired image is recorded.

  In this ink jet recording apparatus, in particular, printing (image recording) has been speeded up in recent years, and accordingly, the number of recording heads mounted on the carriage is increased and the weight of the carriage tends to increase. As the number of printheads mounted on the carriage increases, it is necessary to add a mechanism for adjusting the landing position with other printheads in addition to the ink supply member and nozzle drive board. Will increase more and more. As the printing speed is increased, the carriage scanning speed is also increased.

  By the way, in an ink jet recording apparatus, an error or a bug may occur in the drive control of the carriage, and the carriage may be scanned beyond a predetermined stop position (overrun). Normally, a stopper member having an elastic member is provided at the end of the guide rail, and even when the carriage overruns, the stopper member comes into contact with and stops. However, when the carriage increased in weight and increased in speed as described above overruns, the carriage is not stopped by the stopper member, but is broken and penetrated, and is provided near the end of the guide rail. It is conceivable that they may come into contact with device parts such as a carriage drive unit and a head maintenance unit and be damaged.

Therefore, for example, when overrun of the carriage is detected by the overrun detection means, the drive control unit applies sudden braking to quickly stop the carriage (see, for example, Patent Document 1), or the carriage is used for head maintenance. By setting the distance that the slide member can move to the apparatus end in a state of being engaged with the slide member longer than the distance that the carriage can move to the apparatus end, the carriage is moved ahead of the slide member. There has been proposed a method (for example, see Patent Document 2) for preventing the slide member from being damaged by contacting the device with the end of the device.
JP 2003-326690 A Japanese Patent Laid-Open No. 11-78035

  However, in the method described in Patent Document 1, when an error or bug occurs in the overrun detection means or the drive control unit, the carriage cannot be braked suddenly, so that the heavy and high speed carriage is overrun. In the case of a runaway collision with the stopper member, the carriage cannot be stopped and damage to the carriage and device parts cannot be reduced. Further, in the method described in Patent Document 2, since the collision between the carriage and the apparatus end is allowed in the first place, it is not possible to reduce the damage to the carriage and the apparatus parts at the apparatus end.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ink jet recording apparatus that can suitably stop a runaway carriage and reduce damage to the carriage and apparatus components.

In order to solve the above-mentioned problem, the invention according to claim 1
A carriage mounted with an inkjet head for ejecting ink droplets and scanned in a predetermined scanning direction;
A rail member that extends in the scanning direction and guides scanning of the carriage;
A stopper member disposed on at least one of the end portions in the scanning direction of the rail member, for contacting the carriage and stopping the carriage;
An inkjet recording apparatus comprising:
The rail member has two strips arranged in parallel along a direction orthogonal to the scanning direction,
The stopper member is
And disposed between the two rail members,
A metal deformable portion that absorbs collision energy by plastic deformation, and two tilt prevention portions that are disposed at both ends of the deformable portion in the orthogonal direction and prevent the deformable portion from tilting in the scanning direction; Have
The deformable portion is formed in a flat plate shape perpendicular to the scanning direction, and has a contact portion that contacts the carriage on one surface, and the bending rigidity of the central portion in the orthogonal direction in the scanning direction is an end portion. Is smaller than
The two anti-tilt portions are respectively configured to abut against the two rail members when the central portion of the deformable portion is plastically deformed toward the other surface and the deformable portion is bent from the central portion. It is characterized in that it is arranged on the other surface side of the deforming portion and spaced apart from the nearest rail member by a predetermined distance .

Invention of Claim 2 is the inkjet recording device of Claim 1 , Comprising:
A frame member to which the rail member is attached;
The stopper member is detachably attached to the frame member.

According to a third aspect of the invention, an inkjet recording apparatus according to claim 1 or 2,
The stopper member has a spring member that expands and contracts in the scanning direction at a contact portion that contacts the carriage.

Invention of Claim 4 is the inkjet recording device of Claim 3 , Comprising:
The stopper member includes a damper member that reduces an impact in the scanning direction at the contact portion that contacts the carriage.

  According to the first aspect of the present invention, the stopper member has a deformed portion made of metal that absorbs the collision energy by plastic deformation, so that the stopper member is compared with a conventional stopper member that has only an elastic member. Can absorb much larger collision energy. As a result, even when the heavy and high-speed carriage runs away, the runaway carriage can be suitably stopped to reduce damage to the carriage and device parts.

Further , by making the bending rigidity of the central portion of the deformed portion smaller than that of the end portion and facilitating plastic deformation of the central portion, it is possible to more reliably absorb collision energy due to plastic deformation. Further, it is possible to prevent the deforming portion from being tilted when the stopper member collides with the carriage, and to deform the deforming portion more reliably plastically. Furthermore, when the deformed portion is plastically deformed, the tilt preventing portion can be brought into contact with the rail member to suppress / restrain the plastic deformation of the deformed portion, thereby stopping the carriage. In addition, since the tilt prevention part does not contact the rail member until it moves by a predetermined distance, the plastic deformation of the deformed part is not suppressed or restrained too quickly.

According to the second aspect of the present invention, since the stopper member is detachably attached to the frame member alone, even if the carriage collides and the stopper member is damaged, only the stopper member is used. It can be replaced with a new one, and replacement work can be easily performed.

According to the third aspect of the present invention, the stopper member has the spring member that expands and contracts in the scanning direction at the contact portion, so that it can absorb larger collision energy. Moreover, the amount of collision energy absorbed can be adjusted by adjusting the spring constant of the spring member.

According to the invention of claim 4 , the stopper member has a damper member that reduces the impact in the scanning direction in addition to the spring member at the abutting portion, so that while absorbing a larger collision energy, The carriage can be quickly stopped. Moreover, the amount of collision energy absorbed can be adjusted by adjusting the setting of the damper member.

  Hereinafter, an ink jet recording apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of an inkjet recording apparatus 1 in the present embodiment. As shown in this figure, the ink jet recording apparatus 1 mainly includes a transport unit 2 and a main scanning unit 3.

  An endless transport belt 21 for transporting a recording medium (not shown) from the back side in the direction of arrow Z (hereinafter referred to as transport direction Z) is disposed above the transport unit 2. As the recording medium, in addition to paper and fabric, resin films, metals, and the like can be used, and are not particularly limited.

  The main scanning unit 3 is disposed above the conveyance belt 21 of the conveyance unit 2. A frame 30 is erected inside the main scanning unit 3, and two rod-shaped guide rails 31, 31 extend in the direction of arrow X (hereinafter referred to as main scanning direction X). They are juxtaposed vertically. On the guide rails 31, 31, a substantially casing-like carriage 32 is reciprocally movable in the main scanning direction X via rail bearings 322 (see FIG. 3) arranged one by one at both ends of the back surface. It is supported. Further, stoppers 34 for stopping the carriage 32 are disposed at both ends of the guide rails 31 and 31 (only one is shown in FIG. 1). The stopper 34 will be described in detail later.

  As shown in FIG. 2, the carriage 32 is provided with a plurality of nozzles 321 for discharging ink droplets I of each color such as yellow (Y), magenta (M), cyan (C), and black (K) during image recording. A plurality of recording heads 320 are mounted, and in the present embodiment, only one row and two rows arranged in the direction of arrow Y (hereinafter referred to as sub-scanning direction Y) are alternately subjected to main scanning. A total of 24 units (8 colors × 3 sets) are mounted so as to be arranged in 16 rows in the direction X. The lower surface of the recording head 320 is exposed from the carriage 32, and forms a nozzle surface 320a in which a plurality of nozzles 321 are arranged in the sub-scanning direction Y.

  As shown in FIG. 1, the central part of the movable range of the carriage 32 is a recording area for recording an image on a recording medium, and is a movable area of the carriage 32 at one end side outside the recording area (in the drawing). The head maintenance unit 4 that performs maintenance of the recording head 320 is disposed on the front side of the head. The head maintenance unit 4 includes an ink suction unit 41 that sucks and removes ink and foreign matter in the nozzle 321.

  The ink suction portion 41 is disposed below the height at which the carriage 32 is scanned, and includes a plurality of cap members 411 for covering the nozzle surfaces 320a of the recording heads 320 on the upper surface. The ink suction unit 41 is connected to a lift mechanism (not shown) that moves the ink suction unit 41 upward as the carriage 32 is scanned vertically upward. All the nozzle surfaces 320a are covered with the cap member 411. In this state, by driving a suction pump (not shown) communicated with each cap member 411, ink and foreign matter in the nozzle 321 are sucked and removed.

  The other end side (the back side in the drawing) outside the recording area, which is the movable range of the carriage 32, is the home position of the carriage 32. A carriage standby unit 33 having a cap member (not shown) is provided at the home position, and the carriage standby unit 33 is also scanned with the carriage 32 up to the home position, like the ink suction unit 41. Is connected to a lift mechanism (not shown) that moves the sway upward. When the carriage 32 moves to the home position when the operation is stopped, the carriage standby portion 33 is moved upward by the lift mechanism, and the nozzle surface 320a is covered with the cap member of the carriage standby portion 33, so that the nozzle 321 is prevented from drying. It has become so.

  Further, in the vicinity of the home position of the carriage 32, as shown in FIG. 3, a carriage driving unit 35 is disposed on an extension line of the guide rails 31 and 31 in the main scanning direction X. The carriage drive unit 35 includes a drive motor 351 for driving the carriage 32 and is configured to scan the carriage 32 in the main scanning direction X.

  Next, the configuration of the stopper 34 will be described. Hereinafter, of the two stoppers 34 provided at both ends of the guide rails 31, 31, one stopper 34 on the home position side of the carriage 32 will be described, but the other stopper 34 is one stopper 34. This is similarly configured with the direction of the main scanning direction X reversed.

  The stopper 34 is disposed between the two guide rails 31, 31 and is fixed to the frame 30, and is a set of fixed to one end of the rear surface of the carriage 32 with the positions in the main scanning direction X aligned with each other. The carriage 32 is configured to stop by contacting the rail bearings 322 and 322.

  More specifically, as shown in FIGS. 4A to 4C, the stopper 34 is formed mainly by bending a flat metal, and includes a fixing portion 341 that is fixed to the frame 30, and a carriage. 32, a deformation portion 342 that is deformed at the time of a collision with 32, and tilt prevention portions 343 and 343 that prevent the deformation portion 342 from tilting. 4A is a plan view of the stopper 34 viewed from the sub-scanning direction Y, FIG. 4B is a front view viewed from the main scanning direction X, and FIG. 4C is a side cross-section viewed from below. FIG.

  The fixing portion 341 is formed in a substantially rectangular flat plate shape, and is disposed so as to extend in the main scanning direction X with one surface being in contact with the frame 30. Two through holes 341a and 341a are formed at both ends in the main scanning direction X at the center portion in the vertical direction of the fixing portion 341. Fixing screws (not shown) inserted through the through holes 341a and 341a are provided. The stopper 34 is attached to the frame 30 by being fastened to a screw hole (not shown) of the frame 30. Therefore, the stopper 34 can be attached and detached independently from the frame 30 by tightening and loosening the fixing screw.

  The deformation portion 342 is erected from one end on the end portion side (left side in the drawing) of the guide rail 31 in the fixed portion 341 and is formed in a flat plate shape perpendicular to the main scanning direction X. Two rubber portions 342a and 342a that are in contact with the rail bearings 322 and 322 of the carriage 32 are attached to both ends in the vertical direction on the surface on the center side (right side in the drawing) of the guide rail 31 in the deformed portion 342. Yes. The rubber portions 342a and 342a are formed in a truncated cone shape, and are attached to the deformable portion 342 on the bottom surface so as to contact the rail bearings 322 and 322 on the top surface. The rubber portions 342a and 342a are mainly provided for absorbing shock during light contact such as when the carriage 32 is manually brought into contact with the stopper 34 during maintenance.

  A central portion in the vertical direction of the deformable portion 342 is provided with a substantially triangular thinned portion 342b with the frame 30 side as a base. By providing the thinned portion 342b, the central portion of the deformable portion 342 has a bending rigidity in the main scanning direction X smaller than that of the end portion, and is easily deformed.

  The tilt prevention parts 343 and 343 are erected from both ends of the deformation part 342 in the vertical direction to the end part side of the guide rail 31 and are formed in a substantially flat plate shape parallel to each other. The side surfaces 343 a and 343 a on the frame 30 side of the tilt preventing portions 343 and 343 have a slight gap between the side surfaces 343 a and 343 a. As a result, the tilt preventing portions 343 and 343 can move without contacting the frame 30 when the deforming portion 342 is deformed as described later, and at the same time, the deforming portion 342 is likely to tilt toward the end of the guide rail 31. When this happens, the side surfaces 343a and 343a come into contact with the frame 30 to immediately stop the tilting. Further, the two tilt prevention portions 343 and 343 are spaced apart from each other by a predetermined distance from the nearest guide rail 31.

Next, the operation of the stopper 34 of the inkjet recording apparatus 1 when stopping the runaway carriage 32 will be described. In the present embodiment, the runaway of the carriage 32 means that the carriage 32 overruns and collides with the stopper 34.
FIG. 5A is a graph showing the time change of the deformation amount of each part of the stopper 34, and FIG. 5B is a graph showing the time change of the absorption amount of the collision energy.

  When the carriage 32 moves toward the stopper 34, first, the rail bearings 322 and 322 on one end side of the carriage 32 come into contact with the rubber portions 342 a and 342 a of the stopper 34. At this time, even if the deformable portion 342 is likely to tilt from the base end due to an impact at the time of contact, the tilt of the deformable portion 342 is immediately stopped by the side surface 343a of the tilt preventing portion 343 coming into contact with the frame 30. The rubber portions 342a and 342a absorb the collision energy transmitted by the contact with the rail bearings 322 and 322 while being deformed so as to be contracted by the elasticity.

  When the rubber portions 342a and 342a contract to the elastic limit, the deformable portion 342 starts to deform (point A). After the elastic deformation 342 is slightly elastically deformed, as shown by a one-dot chain line in FIG. 4, the deformable portion 342 is plastically deformed so that the central portion having the weakest bending rigidity is directed toward the end portions of the guide rails 31 and 31. The base end portions at both ends of the plate also plastically deform and begin to bend from the central portion. Since the energy for plastically deforming the metal is far greater than the energy for deforming the rubber of the elastic material, the bending of the deformable portion 342 causes the deformation of the deformable portion 342 compared to the conventional stopper member or rubber portion 342a that only includes the elastic member. Much greater impact energy is absorbed. Further, as the deformable portion 342 is bent, the two tilt preventing portions 343 and 343 start to change directions toward each other as indicated by broken line arrows in FIG. 4.

  When the two anti-tilt parts 343 and 343 move by a predetermined distance in the vertical direction and come into contact with the nearest guide rail 31, the bending of the deforming part 342 is suppressed and the amount of collision energy absorbed. After the tendency to increase is moderated, the bending of the deformable portion 342 is restrained and the carriage 32 is stopped (point B). At this time, the two anti-tilt parts 343 and 343 do not contact the guide rails 31 and 31 until they are moved by a predetermined distance in the vertical direction, so that the bending of the deforming part 342 can be suppressed and restrained excessively quickly. Absent.

  As described above, according to the ink jet recording apparatus 1 of the present embodiment, the stopper 34 can absorb much larger collision energy than the conventional stopper member only provided with the elastic member, so that the weight is heavy and the speed is high. Even when the carriage 32 is out of control, the out-of-control carriage 32 can be suitably stopped. As a result, not only the carriage 32 but also the carriage drive unit 35 disposed on the extension line of the guide rails 31, 31, and the carriage standby unit 33 that contacts the nozzle surface 320 a of the carriage 32 at both ends of the guide rails 31, 31. In addition, damage to the ink suction portion 41 can be reduced.

  Further, by making the bending rigidity of the central portion of the deformable portion 342 smaller than that of the end portion and facilitating plastic deformation of the central portion, it is possible to more reliably absorb collision energy due to plastic deformation. Further, when the stopper 34 collides with the carriage 32, the deformation portion 342 can be prevented from being tilted, and the deformation portion 342 can be bent more reliably. Further, when the deforming portion 342 is bent, the tilt preventing portions 343 and 343 are brought into contact with the guide rails 31 and 31 to suppress and restrain the bending of the deforming portion 342, and the carriage 32 can be stopped. In addition, since the tilt prevention portions 343 and 343 do not contact the guide rails 31 and 31 until they are moved by a predetermined distance, the bending of the deformable portion 342 is not suppressed or restrained excessively quickly.

  Further, since the stopper 34 is detachably attached to the frame 30 alone, even when the carriage 32 collides and the stopper 34 is damaged, only the stopper 34 can be replaced with a new one. Work can be done easily.

[First Modification]
Next, a first modification of the ink jet recording apparatus 1 in the above embodiment will be described. In addition, the same code | symbol is attached | subjected to the component similar to the said embodiment, and the description is abbreviate | omitted.

  The ink jet recording apparatus 1 in the first modification includes a stopper 34A instead of the stopper 34 of the above embodiment. As shown in FIGS. 6A to 6C, the stopper 34A includes rubber portions 342Aa and 342Aa and spring portions 342Ac and 342Ac instead of the rubber portions 342a and 342a of the above embodiment.

  Among these, the rubber portions 342Aa and 342Aa are formed in a truncated cone shape, and are attached to the tip portions of the spring portions 342Ac and 342Ac on the bottom surface so as to contact the rail bearings 322 and 322 on the top surface. On the other hand, the spring portions 342Ac and 342Ac are attached to the center side (right side in the drawing) of the guide rail 31 in the deformable portion 342 and have base ends attached to both ends in the vertical direction so as to expand and contract in the main scanning direction X. It has been.

Next, the operation of the stopper 34A of the inkjet recording apparatus 1 when stopping the runaway carriage 32 will be described.
FIG. 7A is a graph showing the change over time of the deformation amount of each part of the stopper 34A, and FIG. 7B is a graph showing the change over time of the absorption amount of the collision energy.

  When the carriage 32 comes toward the stopper 34A, first, the rail bearings 322 and 322 on one end side of the carriage 32 come into contact with the rubber portions 342Aa and 342Aa of the stopper 34A. The rubber portions 342Aa and 342Aa absorb the collision energy transmitted by contact with the rail bearings 322 and 322 while being deformed so as to be contracted due to the elasticity thereof.

  When the rubber parts 342Aa and 342Aa contract to the elastic limit, the spring parts 342Ac and 342Ac start to deform (point C). When the spring portions 342Ac and 342Ac are fully contracted, the deformable portion 342 starts to deform and bends from the central portion to absorb the collision energy, as in the above embodiment. When the collision energy is absorbed from the carriage 32 and the elastic energy of the spring portions 342Ac and 342Ac exceeds the collision energy remaining in the carriage 32, the spring portions 342Ac and 342Ac start to be deformed, and the carriage 32 is returned to the spring portions 342Ac and 342Ac. And runaway ends. Thereafter, the spring portions 342Ac and 342Ac repeat expansion and contraction until the remaining elastic energy is consumed and stopped.

  As described above, according to the ink jet recording apparatus 1 in the first modified example, it is possible to obtain the same effect as that of the above embodiment, and it is possible to obtain a larger collision by including the spring portions 342Ac and 342Ac. It can absorb energy. Moreover, the amount of collision energy absorbed can be adjusted by adjusting the spring constants of the spring portions 342Ac and 342Ac.

[Second Modification]
Next, a second modification of the ink jet recording apparatus 1 in the above embodiment will be described. In addition, the same code | symbol is attached | subjected to the component similar to the said embodiment, and the description is abbreviate | omitted.

  The ink jet recording apparatus 1 in the second modification includes a stopper 34B instead of the stopper 34 of the above embodiment. As shown in FIG. 8, the stopper 34B further includes damper portions 342Bd and 342Bd in addition to the configuration of the stopper 34A in the first modified example.

  The damper portions 342Bd and 342Bd are disposed on the opposite side of the spring portions 342Ac and 342Ac with respect to the deformable portion 342, and are fixed to the deformable portion 342. The damper portions 342Bd and 342Bd are not particularly limited, but are hydraulic cylinders that are configured to relieve impact in the main scanning direction X in conjunction with expansion and contraction of the spring portions 342Ac and 342Ac.

Next, the operation of the stopper 34B of the inkjet recording apparatus 1 when stopping the runaway carriage 32 will be described.
FIG. 9A is a graph showing the change over time of the deformation amount of each part of the stopper 34B, and FIG. 9B is a graph showing the change over time of the absorption amount of the collision energy.

  When the carriage 32 comes toward the stopper 34B, first, the rail bearings 322 and 322 on one end side of the carriage 32 come into contact with the rubber portions 342Aa and 342Aa of the stopper 34B. The rubber portions 342Aa and 342Aa absorb the collision energy transmitted by contact with the rail bearings 322 and 322 while being deformed so as to be contracted due to the elasticity thereof.

  When the rubber portions 342Aa and 342Aa contract to the elastic limit, the spring portions 342Ac and 342Ac begin to deform, and the damper portions 342Bd and 342Bd also start to operate (point D). When the spring portions 342Ac and 342Ac are fully contracted, the deformable portion 342 starts to deform and bends from the central portion to absorb the collision energy, as in the above embodiment. When the collision energy is absorbed from the carriage 32 and the elastic energy of the spring portions 342Ac and 342Ac exceeds the collision energy remaining in the carriage 32, the spring portions 342Ac and 342Ac start to be deformed, and the carriage 32 is returned to the spring portions 342Ac and 342Ac. And runaway ends. Thereafter, the spring portions 342Ac and 342Ac repeat expansion and contraction until the remaining elastic energy is consumed and stopped.

  As described above, according to the ink jet recording apparatus 1 in the second modified example, it is possible to obtain the same effect as that of the above embodiment, and in addition to the spring portions 342Ac and 342Ac, the damper portions 342Bd and 342Bd are provided. By providing, the carriage 32 can be quickly stopped while absorbing a larger collision energy. In addition, the amount of collision energy absorbed can be adjusted by adjusting settings such as the hydraulic pressure of the damper portions 342Bd and 342Bd.

  In the second modification of the above embodiment, an impact absorbing sheet may be provided instead of the spring portions 342Ac, 342Ac and the damper portions 342Bd, 342Bd.

  In other respects, the present invention is not limited to the above-described embodiment and its modifications, and can of course be changed as appropriate.

It is a perspective view of an inkjet recording device. It is a front view of a carriage. FIG. 6 is an enlarged perspective view of the vicinity of a carriage home position. It is the top view which looked at the stopper of embodiment from the (a) subscanning direction, (b) The front view seen from the main scanning direction, (c) The side sectional view seen from the lower part. It is a graph which shows the time change of (a) deformation amount of each part of the stopper of an embodiment, and (b) is a graph which shows time change of the absorbed amount of collision energy. It is the top view which looked at the stopper of the 1st modification of an embodiment from the (a) sub-scanning direction, (b) it is a front view seen from the main scanning direction, and (c) is a sectional side view seen from the lower part. . It is a graph which shows the time change of the deformation | transformation amount of the stopper part of the 1st modification of embodiment, (b) It is a graph which shows the time change of the absorbed amount of collision energy. It is the top view which looked at the stopper of the 2nd modification of an embodiment from the (a) subscanning direction, (b) it is a front view seen from the main scanning direction, and (c) is a sectional side view seen from the lower part. . It is a graph which shows the time change of (a) deformation amount of each part of the stopper of the 2nd modification of an embodiment, and (b) is a graph which shows time change of the absorbed amount of collision energy.

Explanation of symbols

1 Inkjet recording device 30 Frame (frame member)
31 Guide rail (rail member)
32 Carriage 34, 34A, 34B Stopper (stopper member)
320 Recording head (inkjet head)
342 Deformation part 342a, 342Aa Rubber part (contact part)
342Ac Spring part (spring member)
342Bd damper part (damper member)
343 Tilt prevention part I Ink droplet X Main scanning direction (scanning direction)

Claims (4)

A carriage mounted with an inkjet head for ejecting ink droplets and scanned in a predetermined scanning direction;
A rail member that extends in the scanning direction and guides scanning of the carriage;
A stopper member disposed on at least one of the end portions in the scanning direction of the rail member, for contacting the carriage and stopping the carriage;
An inkjet recording apparatus comprising:
The rail member has two strips arranged in parallel along a direction orthogonal to the scanning direction,
The stopper member is
And disposed between the two rail members,
A metal deformable portion that absorbs collision energy by plastic deformation, and two tilt prevention portions that are disposed at both ends of the deformable portion in the orthogonal direction and prevent the deformable portion from tilting in the scanning direction; Have
The deformable portion is formed in a flat plate shape perpendicular to the scanning direction, and has a contact portion that contacts the carriage on one surface, and the bending rigidity of the central portion in the orthogonal direction in the scanning direction is an end portion. Is smaller than
The two anti-tilt portions are respectively configured to abut against the two rail members when the central portion of the deformable portion is plastically deformed toward the other surface and the deformable portion is bent from the central portion. An ink jet recording apparatus, characterized in that the ink jet recording apparatus is disposed on the other surface side of the deforming portion so as to be spaced apart from the nearest rail member by a predetermined distance . A frame member to which the rail member is attached;
The inkjet recording apparatus according to claim 1, wherein the stopper member is detachably attached to the frame member . The inkjet recording apparatus according to claim 1 , wherein the stopper member has a spring member that expands and contracts in the scanning direction at a contact portion that contacts the carriage . The inkjet recording apparatus according to claim 3 , wherein the stopper member includes a damper member that reduces an impact in the scanning direction at the contact portion that contacts the carriage .

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