JP2014034180A - Recording device frame structure and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame structure capable of moving a mobile object with high accuracy in a recording device including a recording head and the mobile object, and a recording device having the frame structure.SOLUTION: A frame structure includes a guide frame 30 for guiding the moving direction of a carriage 21, and a fixed frame 40 to which the guide frame is fixed. In the guide frame, a rail part 31 is formed by a plate member extending in the moving direction of the carriage and configured to support the carriage to be movable in the moving direction. In the fixed frame, at the end of the rail part in the moving direction of the carriage, a connection member 51 is disposed between a vertical part 41 to which the guide frame is fixed and the horizontal part 42 of the fixed frame away from the vertical part in a direction intersecting the moving direction of the carriage, and a first reinforcing part 50 is formed to compensate for rigidity reduction caused by a notched part SP disposed for carriage insertion when the carriage is supported on the rail part.

Description

  The present invention relates to a frame structure of a recording apparatus having a moving body provided with a recording head, and a recording apparatus.

  2. Description of the Related Art Conventionally, a recording apparatus that includes a recording head on a carriage as an example of a moving body that moves (reciprocates) in one direction and records an image on a recording medium using the recording head has been put into practical use. This type of recording apparatus includes a frame structure including a guide frame that guides while supporting a carriage, and a fixed frame that fixes the guide frame. With respect to the frame structure, in order to perform high-quality recording, the guide frame is fixed to the fixed frame in a state in which the deformation is suppressed, so that the carriage guided by the guide frame can be stably integrated. Techniques that enable movement in a direction (reciprocal movement) have been proposed.

  For example, in Patent Document 1, a fixed frame (rigid base frame) that supports a guide frame (main frame) that guides movement of the carriage in the X direction at a predetermined reference position is orthogonal to the X direction. A frame structure has been proposed in which the guide frame is fixed from the Y direction and the Z direction orthogonal to both the X direction and the Y direction.

  According to such a frame structure, the positioning accuracy of the guide frame attached to the fixed frame is improved, so that it can be made less susceptible to deformation such as bending of the guide frame caused by the effects of component accuracy and assembly accuracy. The effect of improving the movement position accuracy and movement stability of the carriage can be obtained.

JP 2009-39994 A

  However, in such a recording apparatus, in order to make the carriage movable in the guide frame, it is necessary to incorporate the carriage in a state supported by the guide frame. For this reason, as in the frame structure described in Patent Document 1, for example, a fixed space is provided at both ends of the guide frame in the carriage movement direction (X direction) so that the carriage can be incorporated into the guide frame. A cutout is formed in the frame. As a result, the rigidity of the frame portion of the fixed frame in which the cutout portion is formed in the direction intersecting the carriage movement direction, that is, the recording medium conveyance direction is reduced due to the formation of the cutout portion. For this reason, for example, when a force is applied to the guide frame in a direction crossing the carriage movement direction, the fixed frame to which the guide frame is fixed is caused by a decrease in rigidity of the frame portion provided with the notch. In the frame portion where the portion is provided, deformation (bending) along the recording medium conveyance direction may occur.

  Therefore, the guide frame fixed to the fixed frame is displaced (deformed) with the deformation of the fixed frame, and the carriage that is guided by the displaced guide frame moves in an unstable state in which the moving posture changes. It can happen. Then, for example, in the case of a recording apparatus that performs recording on a recording medium using fluid ejected from the recording head, the fluid ejected from the recording head provided in the carriage that moves in an unstable state in which the movement posture changes is, for example, The landing position on the recording medium changes. For this reason, there is a problem that it is difficult to perform high-quality recording on a recording medium.

  Such a situation is almost common in at least a recording apparatus including a frame structure having a guide frame that guides the movement while supporting a moving body (carriage) and a fixed frame that fixes the guide frame. It was a thing.

  The present invention has been made in view of the above circumstances, and a frame structure capable of stably moving a moving body in a recording apparatus having a moving body provided with a recording head, and a recording apparatus having the frame structure The main purpose is to provide

  A frame structure of a recording apparatus that solves the above problem includes a guide frame that guides a moving direction of a moving body provided with a recording head, and a fixed frame to which the guide frame is fixed. And a rail portion that is formed by a plate member extending in the moving direction of the moving body, and that supports the moving body so as to be movable in the moving direction, and the fixed frame includes the rail in the moving direction of the moving body. At the end of the rail portion, a connection is made between a first part where the guide frame is fixed and a second part of the fixed frame which is separated from the first part in a direction intersecting the moving direction of the moving body. A reinforcing portion is provided that has a connecting member and compensates for a decrease in rigidity due to a notch portion provided for insertion of the moving body when the moving body is supported by the rail portion.

  According to this configuration, the first part of the fixed frame to which the guide frame is fixed is reinforced by the connected connecting member so that the position relative to the second part of the fixed frame does not change. Therefore, since the guide frame fixed to the first part of the fixed frame is prevented from being displaced (deformed) with respect to the second part of the fixed frame, the moving moving body can be stably guided.

  In the frame structure of the recording apparatus, the guide frame has a side plate portion formed by bending the plate member in a direction intersecting the moving direction on one end side of the rail portion in the moving direction of the moving body. It is preferable that the reinforcing portion is provided on the other end side of the rail portion opposite to the one end side where the side plate portion is provided in the moving direction of the moving body.

  According to this configuration, the rigidity of the fixed frame is enhanced by the reinforcing portion provided on the other end side of the guide frame where the side plate portion is not provided. As a result, the guide frame fixed to the fixed frame is restrained from being deformed in a direction intersecting the moving direction of the moving body while being fixed to the fixed frame, so that the moving moving body can be stably guided. Can do.

  In the frame structure of the recording apparatus, it is preferable that the second part of the fixed frame to which the connection member is connected is a part that is located closer to the movable body supported by the rail part than the rail part.

  According to this configuration, after the movable body is assembled from the other end side where the side plate portion is not provided and supported by the guide frame, the movable body is moved from the other end side of the guide frame to the outside by the reinforcing portion (connecting member). It can be regulated not to move. Further, the rigidity of the fixed frame which is lowered by the notch portion required for supporting the moving body on the guide frame can be increased. As a result, deformation of the guide frame is suppressed, and the moving moving body can be stably guided.

  In the frame structure of the recording apparatus, it is preferable that when the reinforcing portion is the first reinforcing portion, a second reinforcing portion that increases rigidity of the second portion to which the connection member is connected in the fixed frame is provided.

  According to this configuration, since the rigidity of the second portion is enhanced by the second reinforcing portion, the position of the first portion of the fixed frame to which the guide frame is fixed does not change with respect to the reinforced second portion. To be suppressed. Therefore, displacement (deformation) of the guide frame is suppressed with a high probability, and the moving moving body can be stably guided.

  In the frame structure of the recording apparatus, the second reinforcing portion includes an extending member that extends in a direction intersecting a moving direction of the moving body, and the second portion is reinforced by the extending member. It is preferable that at least a connection portion of the connection member connected to the second part is located in a region range along the extending direction of the extending member in the region.

  According to this configuration, the rigidity of the second portion to which the connecting member (first reinforcing portion) is connected is reliably increased by the extending member (second reinforcing portion) fixed to the fixed frame. Therefore, the displacement (deformation) of the guide frame fixed to the first part is more reliably suppressed, and the moving moving body can be stably guided.

A recording apparatus that solves the above problems includes a moving body that includes a recording head that performs recording by ejecting a fluid onto a recording medium, and the frame structure having the above-described configuration.
According to this configuration, it is possible to provide a recording apparatus capable of stably recording on a recording medium by the recording head provided in the moving body that moves stably by the guide frame in which deformation is suppressed.

1 is a perspective view of a printing apparatus that is an embodiment of a recording apparatus. FIG. 3 is a perspective view illustrating a frame structure included in the printing apparatus according to the embodiment. The perspective view of the guide frame which guides a moving direction, supporting a carriage. (A), (b) is a perspective view of the connection member which raises the rigidity of a fixed frame. The perspective view of the extending member which raises the rigidity of a fixed frame. The side view which shows the frame structure before a reinforcement part is provided in a fixed frame. The side view which shows the frame structure after the reinforcement part was provided in the fixed frame.

  Hereinafter, a recording apparatus that includes a fluid ejecting head as an example of a recording head that ejects fluid and prints (records) an image including characters and figures by ejecting ink as an example of fluid onto a sheet as an example of a recording medium. An embodiment of a printing apparatus as an example of the apparatus will be described with reference to the drawings.

  As shown in FIG. 1, a printing apparatus 11 according to the present embodiment has an apparatus main body 12 having a substantially rectangular parallelepiped shape constituted by a plurality of casing members, and an original document is placed on the upper side which is the antigravity direction side. An image reading unit 13 such as a scanner for reading (image) is provided. Further, an automatic document feeder 14 that automatically supplies a read document to the image reading unit 13 is disposed above the image reading unit 13. The automatic document feeder 14 swings around a swing shaft 14a provided on one side (rear side) of the apparatus body 12 in the short direction, and is opposite to the swing shaft 14a in the apparatus body 12. The other side (front side) is lifted. By lifting the automatic document feeder 14, the user can manually supply the read document to the image reading unit 13.

  In addition, on the rear side of the apparatus main body 12, a mounting table 15 on which a plurality of sheets P can be stacked is provided. The paper P placed on the mounting table 15 is conveyed one by one from the rear to the printing unit 20 provided in the apparatus main body 12, and printing is performed on the paper P in the printing unit 20. That is, the paper P is transported from the mounting table 15 to the printing unit 20 by a transport mechanism (not shown), and the printing unit 20 intersects the direction (mainly referred to as the sub-scanning direction Y) of the paper P (this is the main direction). An image is printed by ejecting ink onto the paper P from the fluid ejecting head 22 that reciprocates in the scanning direction X. The paper P on which an image has been printed by the printing unit 20 is conveyed further forward (in the sub-scanning direction Y) from the printing unit 20 and discharged from a paper discharge port 16 provided on the front surface of the apparatus main body 12.

  Below the paper discharge port 16, a stacker 17 that receives the paper P discharged from the paper discharge port 16 is movable between a position where it is stored in the apparatus main body 12 and a position where it is pulled out from the apparatus main body 12. It is arranged. The stacker 17 can be pulled out from the apparatus main body 12 by the gripping portion 17a, and is pulled out from the apparatus main body 12 in accordance with the length of the discharged paper P in the discharge direction (conveyance direction). On the other hand, an operation panel 18 for executing a printing operation or the like in the printing unit 20 is disposed above the paper discharge port 16. The operation panel 18 includes a display unit (for example, a liquid crystal display) 18a for displaying a menu screen and the like, an operation member (for example, an operation button such as a power button) 18b, and the like.

  The printing unit 20 included in the printing apparatus 11 according to the present embodiment includes a carriage 21 as an example of a moving body that reciprocates in the main scanning direction X, and includes a fluid ejecting head 22 that ejects ink onto the carriage 21. It is done. Similarly, an ink cartridge EC as an example of a fluid container that can store ink is mounted on the carriage 21, and ink is supplied from the mounted ink cartridge EC to the fluid ejecting head 22.

  The carriage 21 is movable (reciprocating) in the main scanning direction X by being guided in its moving direction by a guide frame 30 that is a plate member extending along the main scanning direction X. That is, the guide frame 30 has a rail portion 31 in which an upper rail 31A and a lower rail 31B are provided by bending the member into a substantially U shape at both upper and lower end portions of the plate member orthogonal to the main scanning direction X. ing. The rear end side of the carriage 21 is supported by the upper rail 31A and the lower rail 31B. The carriage 21 is guided by the upper rail 31A and the lower rail 31B while being in a so-called cantilever state, and moves the rail portion 31 along the main scanning direction X. Move back and forth.

  The printing apparatus 11 according to the present embodiment includes a fixed frame 40 to which a plurality of casing members constituting the apparatus main body 12 are fixed, and has a frame structure in which the guide frame 30 is fixed to the fixed frame 40. Yes. Next, the configuration of the printing unit 20 including this frame structure will be described in detail with reference to FIG. In FIG. 2, the printing apparatus 11 with the apparatus main body 12 and the mounting table 15 removed is shown in a perspective view.

  As shown in FIG. 2, the fixed frame 40 included in the frame structure of the printing apparatus 11 has a frame portion that extends along the main scanning direction X and the sub-scanning direction Y. A component is attached. That is, in addition to the carriage 21 and the guide frame 30, the printing unit 20 includes a support base 23 that supports the paper P on the upper surface below the fluid ejection head 22. The support base 23 is arranged to face the moving fluid ejecting head 22 and is fixed to the fixed frame 40 with a predetermined gap between the paper P supported on the upper surface and the fluid ejecting head 22.

  Furthermore, the printing unit 20 includes a conveyance member that conveys the paper P. That is, a pair of a paper feed driving roller 24 and a paper feed driven roller 25 that sandwich and convey the paper P onto the support table 23, and a paper discharge drive roller 26 that ejects the paper P from the support platform 23 while ejecting the paper P. A roller pair of paper driven rollers (not shown) is provided as a conveying member. Among these rollers, the paper feed driving roller 24 is rotatably supported with respect to the fixed frame 40, while the paper feed driven roller 25 is rotatably supported by the holding member 27, and an urging member (here) The tension spring 28 is pressed against the paper feed driving roller 24 by a tension spring.

  In other words, the holding member 27 is held by the guide frame 30 (rail portion 31), and a contact portion with the lower rail 31B of the guide frame 30 is set as a swing center, and a paper feed driven roller is set with respect to the swing center. One end of the biasing member 28 is locked at a position opposite to the position where the shaft 25 is pivotally supported. The other end of the holding member 27 is swung by the urging force (tension) of the urging member 28 that is locked to the locking portion 31K provided on the guide frame 30 (rail portion 31). The driven roller 25 is pressed against the paper feed driving roller 24.

  In other words, the guide frame 30 is fixed to the fixed frame 40 with the urging member 28 locked so as to press the paper feed driven roller 25 against the paper feed drive roller 24 in this way. The shape of the fixed guide frame 30 and the mounting structure to the fixed frame 40 will be described with reference to FIG.

  As shown in FIG. 3, the guide frame 30 is formed of a metal plate member, and has a rail portion 31 that extends along the moving direction of the carriage 21 (main scanning direction X). Then, as shown by a two-dot chain line in FIG. 3, a plate member portion having a predetermined length further extending from the rail portion 31 to one end side in the moving direction of the carriage 21 (left side as viewed from the front side in the sub-scanning direction Y). However, as indicated by solid line arrows in FIG. 3, side plate portions 32 are formed that are bent at a substantially right angle in a direction crossing the moving direction of the carriage 21 (here, the sub-scanning direction Y). The side plate portion 32 is formed with bent portions 32A and 32B where the plate member is bent at both end portions in the vertical direction. Thereby, the bending rigidity of the side-plate part 32 is improved. Further, the bent portions 32A and 32B are bent in directions opposite to the bending directions of the upper rail 31A and the lower rail 31B in the rail portion 31, and the upper rail 31A and the lower rail 31B can be extended to the vicinity of the side plate portion 32. Has been.

  The guide frame 30 is fixed to the fixed frame 40 using a fastening member TB such as a screw. In the present embodiment, the fastening member TB is inserted into the attachment hole 32H provided in the lower bent portion 32B of the side plate portion 32 and the attachment hole 31H provided in the rail portion 31 (lower rail 31B) and fixed. Fix to the frame 40. Therefore, by fixing both the side plate portion 32 and the rail portion 31 to the fixed frame 40, the guide frame 30 bends at the bent portion 30A, and the fixed frame is in a state of being substantially L-shaped when viewed from above. 40 is fixed.

  Returning to FIG. 2, the carriage 21 is incorporated into the rail portion 31 of the guide frame 30 fixed to the fixed frame 40 in a substantially L shape in this manner so as to be supported. In the present embodiment, the carriage 21 has the other end side (secondary side) of the guide frame 30 on the opposite side to the one end side where the side plate portion 32 is provided in the main scanning direction X, as indicated by a two-dot chain line on the right side of FIG. On the right side as viewed from the front side in the scanning direction Y, the sheet is inserted from a notch SP provided in the fixed frame 40.

  That is, the fixed frame 40 has a side wall portion 43 formed on the other end side (right side) of the guide frame 30. In the side wall portion 43, the upper portion on the Y side in the sub-scanning direction is cut out in a rectangular shape so that the carriage 21 can be inserted into a state supported by the upper rail 31A and the lower rail 31B of the guide frame 30. A notch SP is formed. Therefore, the side wall portion 43 is a vertical portion as an example of a first portion whose shape viewed from the front side in the insertion direction of the carriage 21 extends along the vertical direction perpendicular to the main scanning direction X and the sub-scanning direction Y. 41 and a lateral part 42 as an example of a second part extending along the sub-scanning direction Y. In other words, the notch SP is formed by the vertical portion 41 and the horizontal portion 42. Note that the other end side (the right side when viewed from the front side in the sub-scanning direction Y) of the guide frame 30 (rail portion 31) opposite to the one side on which the side plate portion 32 is provided in the main scanning direction X is a fastening member. It is fixed to the vertical portion 41 by TB (see FIG. 3).

  The carriage 21 is thus inserted in the notch SP and supported by the guide frame 30 (rail part 31), so that the carriage 21 can be moved in the main scanning direction X in the printing unit 20. The provided carriage 21 is provided with a fluid ejecting head 22 on the lower surface side thereof. As indicated by a two-dot chain line in FIG. Is supplied.

  The carriage 21 is fixed to an endless belt 36 that is stretched between a drive pulley (not shown) to which a drive source (such as a motor) is directly connected and a driven pulley 35, and together with the endless belt 36 in the main scanning direction. Reciprocate along X. At this time, the linear scale 37 attached to the rail portion 31 of the guide frame 30 is read by a detector (encoder) (not shown) provided in the carriage 21 so that the position of the carriage 21 (fluid ejection head 22) is grasped. The carriage 21 (fluid ejecting head 22) is appropriately reciprocated along the main scanning direction X.

  Now, after the carriage 21 is provided in the printing unit 20, the fixed frame 40 is provided on the other side of the guide frame 30 provided with a notch SP on the insertion side of the carriage 21 (as viewed from the front side in the sub-scanning direction Y). In the right side), a reinforcing portion for increasing the rigidity of the fixed frame 40 is provided. In this embodiment, the reinforcement part has the 1st reinforcement part 50 to which the connection member 51 which consists of metal plates was attached, and the 2nd reinforcement part 60 to which the extending member 61 which consists of metal plates was attached. .

  The connecting member 51 has a vertical part 41 (first part) which is one part sandwiching the L-shaped corner part in the side wall part 43 of the fixed frame 40 which is substantially L-shaped by providing the notch part SP. And a lateral part 42 (second part) which is the other part. The extending member 61 is formed below the connecting position of the connecting member 51 connected to the lateral portion 42 of the side wall portion 43, and the recess in the main scanning direction X extends along the sub-scanning direction Y. Is attached to a stepped portion 45 of the fixed frame 40 to be fixed.

  First, the shape of the connection member 51 included in the first reinforcing portion 50 and the shape of the attachment portion of the connection member 51 in the fixed frame 40 will be described with reference to FIGS. 4 (a), 4 (b), and FIG. 6. FIG. 4B is a view showing the connection member 51 as viewed from the opposite side to FIG. Further, FIG. 6 is a view showing a state in which the connection member 51, the extending member 61, and some members (such as a connection board) are not provided in the fixed frame 40 for convenience of explanation.

  As shown in FIGS. 4A, 4B, and 6, the connecting member 51 is formed in a substantially parallelogram having a longitudinal direction. At one end side in the longitudinal direction, there is provided a first fixing portion 54 formed with a cylindrical projection 52 and a first attachment portion 53 that are connected to the vertical portion 41, and at the other end side, a horizontal portion. A second fixing portion 56 is provided in which a second mounting portion 55 is formed as a connection portion with the 42. The cylindrical protrusion 52 is formed so as to project in a cylindrical shape toward the side wall part 43 (vertical part 41), and the first mounting part 53 is formed by bending toward the side wall part 43 as well. Further, the second mounting portion 55 is formed by two inclined surface portions 55S formed by being bent so as to form a mountain fold line and a valley fold line formed in the vertical direction and the direction orthogonal to each other along the sub-scanning direction Y, respectively. Is bent toward the side wall portion 43 (lateral portion 42).

  In the connecting member 51, the first fixing portion 54 is positioned by the protrusion 41 </ b> P provided in the vertical portion 41 being fitted into the cylinder of the cylindrical protrusion 52, and the first attachment portion 53 is positioned in the vertical portion 41. Is inserted into a substantially rectangular first recess 41D. Then, the first mounting portion 53 is fixed to the vertical portion 41 by the fastening member TB inserted into the lower hole 41H provided in the first recess 41D through the mounting hole 64 of the first mounting portion 53, and the first fixing portion 54 is fixed to the vertical portion 41.

  On the other hand, the second fixing portion 56 is positioned by inserting the second mounting portion 55 into the substantially rectangular second concave portion 42D provided in the lateral portion 42, and the lower portion provided in the second concave portion 42D. The second mounting portion 55 is fixed to the lateral portion 42 by the fastening member TB inserted into the hole 42H, and the second fixing portion 56 is fixed to the lateral portion 42. In addition, although illustration is abbreviate | omitted, it is a line in the direction which cross | intersects the contact surface 55T with the horizontal part 42 in the 2nd attachment part 55 with respect to the straight line which connects the cylindrical projection part 52 and the attachment hole 64 of the 2nd attachment part 55. Convex ridges or concave ridges may be provided.

  Next, refer to FIGS. 5 and 6 for the shape of the extending member 61 made of a metal plate included in the second reinforcing portion 60 and the shape of the attaching portion of the extending member 61 in the fixed frame 40 (stepped portion 45). To explain.

  As shown in FIGS. 5 and 6, the extending member 61 includes a top surface portion 62 and a side surface portion 63 that are planar portions that extend along the sub-scanning direction Y and are orthogonal to each other by bending the plate member. Has been. An attachment hole 64 into which the fastening member TB is inserted when the extending member 61 is attached to the stepped portion 45 is formed in the side surface portion 63, and the fastening member TB is provided at a position corresponding to the attachment hole 64 in the stepped portion 45. A lower hole 45H is provided. The step portion 45 is formed with a substantially rectangular parallelepiped protrusion 45P for positioning the extension member 61 when the extension member 61 is attached to the step portion 45. The extension member 61 has a position corresponding to the protrusion. A plurality of rectangular positioning holes 65 are formed. In the present embodiment, three positioning holes 65 are formed, and one of them is formed at the end so that one of the four sides of the rectangular shape is open on the side opposite to the sub-scanning direction Y. It is said that.

  Each positioning hole 65 has a width dimension of the hole orthogonal to the extending direction of the side surface portion 63 (sub-scanning direction Y) substantially the same as that of the convex portion 45P, while one of the center holes extends in the extending direction (sub-scanning direction). The dimension in the direction Y) is almost the same as that of the protrusion 45P. That is, the extension member 61 is positioned with respect to the fixed frame 40 in the sub-scanning direction Y and the vertical direction perpendicular to the sub-scanning direction Y by the central positioning hole 65. The attachment hole 64 into which the fastening member TB is inserted has an oval shape that is long in the extending direction of the side surface portion 63 (sub-scanning direction Y) in consideration of the positional deviation with respect to the lower hole 45H.

  The upper surface portion 62 of the extending member 61 is provided with a notch 66 at substantially the center in the extending direction (sub-scanning direction Y). When the second fixing portion 56 of the connecting member 51 is fixed to the lateral portion 42 by the notch 66, the connection member KB (electrically connecting the second fixing portion 56 and the extending member 61 ( A space is provided for disposing the space (see FIGS. 2 and 7).

Next, the effect | action of this embodiment is demonstrated with reference to FIG. 6 and FIG.
As shown in FIG. 6, in a state in which the guide frame 30 is fixed to the fixed frame 40, the rail portion 31 extending along the main scanning direction X is relative to the vertical portion 41 in the side wall portion 43 of the fixed frame 40. Since it is fixed, a state in which the rail portion 31 applies a force to the vertical portion 41 of the fixed frame 40 occurs as indicated by a thick arrow in FIG.

  That is, as shown by a thick broken line in FIG. 6, one end of a biasing member 28 that applies a biasing force that presses the paper feed driven roller 25 against the paper feed drive roller 24 is an engaging portion 31K (see FIG. 3). Accordingly, the reaction force of the urging force of the urging member 28 always acts on the rail portion 31 at the locking portion 31K where one end of the urging member 28 is locked. By the action of this reaction force, the rail 31 is displaced in the direction in which the vertical portion 41 is located, and the guide frame 30 pushes the vertical portion 41 in the sub scanning direction Y to the side opposite to the side where the carriage 21 is located. It will be.

  At this time, when the rigidity of the side wall part 43 (the vertical part 41 or the horizontal part 42) is low, the side wall part 43 is deformed so that the notch SP side is largely opened around the L-shaped corner. Specifically, in the vertical portion 41, the upper side is displaced to the side opposite to the side on which the carriage 21 is located as compared to the lower side. For this reason, the rail part 31 has a state in which the upper rail 31A is displaced in a direction opposite to the sub-scanning direction Y with respect to the lower rail 31B, that is, a state in which the rail part 31 tilts backward or bends.

  As a result of such a state, for example, the carriage 21 that moves in a cantilever state along the rail portion 31 is lifted upward in the sub-scanning direction Y side (front side), so that there is a gap between the support base 23 and the carriage 21. PG may change (increase). In such a case, the ink ejected from the fluid ejecting head 22 cannot be stably printed by changing the landing position on the paper P supported on the support base 23. Alternatively, the distance between the linear scale 37 and the detector 38 of the carriage 21 may change due to the bending of the rail portion 31, and the detector 38 may easily be erroneously detected.

  Further, when the carriage 21 is heavy, the carriage 21 whose rear side is supported by the rail portion 31 in a cantilevered state generates a downward force in which the front is in the direction of gravity due to its own weight. Due to the force generated in this manner, the rail portion 31 that supports the carriage 21 is tilted forward or bent because the upper rail 31A is displaced in the sub-scanning direction Y with respect to the lower rail 31B. In such a state, when the rigidity of the side wall part 43 (the vertical part 41 or the horizontal part 42) is low, the side wall part 43 is deformed so that the notch part SP side is closed small with the L-shaped corner as the center, and the support base 23 may change (decrease), or the distance between the linear scale 37 and the detector 38 of the carriage 21 may change.

  Therefore, as shown in FIG. 7, in the present embodiment, the connection member 51 and the extending member 61 are provided in the side wall portion 43 (the vertical portion 41 and the horizontal portion 42) of the fixed frame 40. In other words, the connection member 51 has the first fixing portion 54 fixed to the vertical portion 41 (projection 41P and first recess 41D) in the side wall portion 43, and the lateral portion 42 (second recess 42D) in the side wall portion 43. On the other hand, the second fixing portion 56 is fixed. Therefore, the connecting member 51 includes a protrusion 41P (first portion) of the vertical portion 41 and a second recess 42D (the second recess 42D (the first portion) of the horizontal portion 42 that is separated from the protrusion 41P in the sub-scanning direction Y intersecting the moving direction of the carriage 21. The second part) is connected. The second concave portion 42 </ b> D (second portion) of the lateral portion 42 is a portion located on the carriage 21 side supported by the guide frame 30 rather than the guide frame 30. As a result, the connecting member 51 obliquely connects the vertical part 41 and the horizontal part 42 that form the notch part SP in the side wall part 43, and the notch part SP centered on the L-shaped corner is opened. Suppress closing. That is, the rigidity of the side wall portion 43, specifically, the torsional rigidity with the moving direction of the carriage 21 as an axis is increased.

  On the other hand, in the extending member 61, the side surface portion 63 is fixed to the stepped portion 45 provided below the lateral portion 42 in the fixed frame 40. In the state where the side surface portion 63 is fixed, the upper surface portion 62 of the extending member 61 has a contact or a slight gap with respect to the lower surface 42B of the lateral portion 42 located above the step portion 45. Arranged apart from each other.

  Further, in the present embodiment, the extending member 61 has a length L2 along the sub-scanning direction Y, and the extending member 61 is fixed to the fixed frame 40 in the center of the length L2. The portion is provided with a second concave portion 42D of the lateral portion 42 to which the second fixing portion 56 of the connection member 51 is fixed. Therefore, the extending member 61 is, for example, disposed in the fixed frame 40 located below the lateral portion 42 by the displacement of the lateral portion 42 connected to the longitudinal portion 41 by the connecting member 51 together with the displacement of the longitudinal portion 41. Occurrence of bending that curves upward in a convex state is suppressed. That is, the torsional rigidity of the fixed frame 40 with the moving direction of the carriage 21 as an axis is increased.

  In the present embodiment, the reinforcing region of the fixed frame 40 reinforced by the extending member 61 in the fixed frame 40 is a region where the extending member 61 is substantially fixed. And the extending member between the vertical part 41 and the horizontal part 42 to which the connecting member 51 is connected in the reinforcing region of the extending member 61, that is, the region corresponding to the length L2 in the extending direction of the extending member 61. The extending member 61 is fixed to the fixed frame 40 so that the region of the length L1 along the extending direction of 61 is located. As a result, the rigidity of the side wall portion 43 in the fixed frame 40 (torsional rigidity with the moving direction of the carriage 21 as an axis) is further increased.

  In the present embodiment, when the second fixing portion 56 is fixed to the lateral portion 42 in the connecting member 51 and when the side surface portion 63 is fixed to the stepped portion 45 in the extending member 61, the connecting member 51 and the extending portion 61 are extended. The terminals T1 and T2 of the connection member KB that electrically connects the member 61 are fixed together. Thereby, for example, static electricity generated in the printing unit 20 or the like can be released from the printing unit 20 to the extending member 61 side via the connection member 51.

According to the above embodiment, the following effects can be obtained.
(1) The vertical portion 41 of the fixed frame 40 to which the guide frame 30 is fixed is reinforced by the connected connecting member 51 so that the position relative to the horizontal portion 42 of the fixed frame 40 does not change. Therefore, since the guide frame 30 fixed to the vertical portion 41 of the fixed frame 40 is restrained from being displaced (deformed) with respect to the horizontal portion 42 of the fixed frame 40, the moving carriage 21 can be stably guided. Further, the carriage 21 can be incorporated so as to be supported by the guide frame 30 by being inserted from the notch SP formed by the vertical portion 41 and the horizontal portion 42.

  (2) The torsional rigidity about the moving direction of the carriage 21 is enhanced by the rail portion 31 and the side plate portion 32 bent at a right angle on one end side of the guide frame 30. On the other hand, the rigidity of the fixed frame 40 is enhanced by the connecting member 51 and the extending member 61 provided on the other end side of the guide frame 30 where the side plate portion 32 is not provided. As a result, the guide frame 30 fixed to the fixed frame 40 is prevented from being deformed in a direction crossing the moving direction of the carriage 21 while being fixed to the fixed frame 40, so that the moving carriage 21 can be stabilized. I can guide you.

  (3) After the carriage 21 is assembled from the other end side where the side plate portion 32 is not provided and supported by the guide frame 30, the carriage 21 is moved from the other end side of the guide frame 30 to the outside by the reinforcing portion (connecting member 51). Can be restricted from moving. Further, the rigidity of the fixed frame 40 which is lowered by the notch SP for insertion of the carriage 21 required for supporting the carriage 21 on the guide frame 30 can be increased. As a result, the deformation of the guide frame 30 is suppressed, and the moving carriage 21 can be stably guided.

  (4) Since the rigidity of the lateral part 42 of the fixed frame 40 is enhanced by the extending member 61, the vertical part 41 to which the guide frame 30 is fixed is prevented from changing its position with respect to the reinforced lateral part 42. It is suppressed. Accordingly, displacement (deformation) of the guide frame 30 is suppressed with a high probability, and the moving carriage 21 can be stably guided.

  (5) The rigidity of the lateral portion 42 to which the connecting member 51 is connected is reliably increased by the extending member 61 fixed to the fixed frame 40. Therefore, the displacement (deformation) of the guide frame 30 fixed to the vertical portion 41 is more reliably suppressed, and the moving carriage 21 can be stably guided.

  (6) The printing apparatus 11 capable of stably recording on the paper P can be provided by the fluid ejecting head 22 provided in the carriage 21 that moves stably by the guide frame 30 in which deformation is suppressed. .

In addition, you may change the said embodiment as follows.
In the above embodiment, the carriage 21 does not necessarily have to include the fluid ejecting head 22 as a recording head. For example, a recording apparatus that includes a thermal head as an example of a recording head in the carriage 21 and performs recording on thermal paper as an example of a recording medium may be used. Alternatively, the recording head may be a head that emits light such as a laser.

  In the above embodiment, at least the connecting portion of the connecting member 51 connected to the lateral portion 42 within the region range along the extending direction of the extending member 61 in the reinforcing region of the lateral portion 42 that the extending member 61 reinforces, That is, the second recess 42D (more specifically, the lower hole 42H) may be positioned. In short, it is only necessary that the extending member 61 can reinforce the fixed frame 40 so that the lateral portion 42 to which the connecting member 51 is connected has rigidity to resist displacement caused by the displacement of the longitudinal portion 41. That is, if at least the portion of the lateral portion 42 to which the second fixing portion 56 of the connecting member 51 is connected is located in the region of the length L2 along the extending direction of the lateral portion 42 reinforced by the extending member 61. It can be expected that the displacement of the lateral portion 42 is suppressed with a high probability.

  -In the said embodiment, the extending member 61 does not necessarily need to be fixed. For example, in the side wall part 43, when the horizontal part 42 to which the connecting member 51 is connected has a high rigidity in advance so that the displacement due to the displacement of the vertical part 41 hardly occurs, the extending member 61 is not necessary. It is.

  In the above embodiment, the lateral portion 42 of the fixed frame 40 to which the connection member 51 is connected does not necessarily have to be a portion located on the carriage 21 side supported by the guide frame 30 rather than the guide frame 30. For example, the lateral portion 42 may be a portion located on the opposite side of the guide frame 30 from the carriage 21 side supported by the guide frame 30. The point is that the position of the horizontal portion 42 may be anywhere in the fixed frame 40 as long as the displacement (deformation) of the vertical portion 41 to which the guide frame 30 is fixed can be suppressed.

  In the above-described embodiment, the reinforcing portion includes the vertical portion 41 to which the guide frame 30 of the fixed frame 40 is fixed, and the horizontal portion away from the vertical portion 41 in the direction intersecting the moving direction of the carriage 21 (sub-scanning direction Y). It is not always necessary to have the connection member 51 connected to the part 42. For example, when the lateral part 42 exists at a position away from the moving direction of the carriage 21 (main scanning direction X), the connecting member 51 is connected to the lateral part 42 in the direction along the main scanning direction X. May be.

  In the above embodiment, the fixed frame 40 may be provided with reinforcing portions that increase the rigidity of the fixed frame 40 at both ends of the guide frame 30. For example, when the side plate portion 32 bent at a right angle is not provided in the guide frame 30, it is preferable to provide a reinforcing portion that increases the rigidity of the fixed frame 40 at both ends of the guide frame 30 as described above. In this way, the carriage 21 can be inserted from either side of the both ends of the guide frame 30.

  In the above embodiment, the side plate portion 32 does not necessarily have to be bent at a right angle with respect to the rail portion 31. For example, it may be bent at an obtuse angle larger than a right angle or an acute angle smaller than a right angle. Further, the bending direction of the side plate portion 32 is not necessarily the sub-scanning direction Y side, and may be bent to the opposite side. In short, the guide frame 30 fixed to the fixed frame 40 may have any bending shape and bending direction that can suppress the displacement of the rail portion 31 with respect to torsion about the main scanning direction X.

  In the above embodiment, the recording medium is not limited to the paper P, and may be a plate-like member made of a metal plate, a resin plate, a cloth, or the like. That is, any member capable of printing (recording) with fluid in the printing unit 20 can be employed as one of the recording media. Further, the recording medium is not necessarily transported by the transport member.

In the above embodiment, the printing apparatus (recording apparatus) 11 may be a multifunction machine having other functions such as a FAX unit instead of the image reading unit 13.
In the above-described embodiment, the recording apparatus can be jetted by flowing as a fluid other than ink (liquid, a liquid material in which particles of functional material are dispersed or mixed in the liquid, a fluid such as a gel, or a fluid. It may be a fluid ejecting apparatus that performs recording by ejecting or ejecting (including solid). For example, recording is performed by ejecting a liquid material in which a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. A liquid ejecting apparatus may be used. Also, a fluid injection device for injecting a fluid such as a gel (eg, physical gel), a powder injection device (eg, a toner jet type) for injecting a solid such as powder (particles) such as toner Recording device). The present invention can be applied to any one of these fluid ejecting apparatuses. In the present specification, the term “fluid” is a concept that does not include a fluid consisting only of gas. Examples of the fluid include liquid (inorganic solvent, organic solvent, solution, liquid resin, liquid metal (metal melt), etc. ), Liquids, fluids, powders (including granules and powders), and the like.

  DESCRIPTION OF SYMBOLS 11 ... Printing apparatus as an example of a recording device, 21 ... Carriage as an example of a moving body, 22 ... Fluid ejecting head as an example of a recording head, 30 ... Guide frame, 31 ... Rail part, 32 ... Side plate part, 40 ... Fixed frame, 41... Vertical part as an example of the first part, 42... Lateral part as an example of the second part, 50... First reinforcing part, 51 .. connecting member, 60. Member, P: paper as an example of a recording medium, SP: notch.

Claims (6)

A guide frame for guiding a moving direction of a moving body provided with a recording head;
A fixed frame to which the guide frame is fixed,
The guide frame includes
Formed by a plate member extending in the moving direction of the moving body, provided with a rail portion that supports the moving body in a movable direction;
The fixed frame includes
A first portion where the guide frame is fixed at an end of the rail portion in the moving direction of the moving body, and a second portion in the fixed frame which is separated from the first portion in a direction crossing the moving direction of the moving body. A connecting member connected to the part, and a reinforcing part that compensates for a decrease in rigidity due to a notch provided for inserting the moving body when the moving body is supported by the rail part is provided. The recording device frame structure. The guide frame is provided with a side plate portion formed by bending the plate member in a direction intersecting the moving direction on one end side of the rail portion in the moving direction of the moving body,
The reinforcing part is
The frame structure of the recording apparatus according to claim 1, wherein the frame structure is provided on the other end side of the rail portion opposite to the one end side on which the side plate portion is provided in the moving direction of the moving body.   3. The frame of the recording apparatus according to claim 1, wherein the second part of the fixed frame to which the connection member is connected is a part that is located closer to the moving body than the rail part is supported by the rail part. Construction. When the reinforcing part is the first reinforcing part,
4. The frame structure of the recording apparatus according to claim 1, further comprising a second reinforcing portion that increases rigidity of the second portion to which the connection member is connected in the fixed frame. 5. The second reinforcing portion has an extending member extending in a direction intersecting the moving direction of the moving body,
The connection part of the said connection member connected with the said 2nd site | part is located in the area | region range in alignment with the extension direction of the said extension member in the reinforcement area | region of the said 2nd site | part which the said extension member reinforces. 5. A frame structure of the recording apparatus according to 4. A moving body provided with a recording head that performs recording by ejecting fluid onto the recording medium;
A frame structure of the recording apparatus according to any one of claims 1 to 5,
A recording apparatus.