Medium conveying device and recording apparatus

Abstract

The invention provides a medium conveying apparatus and a recording apparatus. The medium conveying apparatus includes: an apparatus main body; a door part which can be opened and closed with respect to the device main body by taking a rotation shaft extending in the vertical direction as the center; and a door holding part for holding a state in which the door part forms at least a part of the conveyance path in which the door part is opened at a predetermined angle or more with respect to the device main body, the door holding part having: a flat plate-shaped plate spring provided on one of the door part and the device main body; and an engagement part provided to the other of the door part and the device main body, the leaf spring having: a fixed end which is one end of the leaf spring and which is attached to one of the door part and the device main body; a free end, which is the other end of the leaf spring, and which can slide relative to one of the door part and the device main body; and a protruding portion located between the fixed end and the free end, the protruding portion keeping the door portion in a state of opening the predetermined angle or more by applying a spring force to the engagement portion.

Description

Technical Field

[0001] The present invention relates to a medium transport device for transporting a medium and a recording device equipped with the medium transport device. Background Art

[0002] In a medium conveying device that conveys a medium, a door for opening a medium conveying path may be provided, as disclosed in Patent Document 1. The door is attached to the device body via a hinge.

[0003] In addition, the door sometimes adopts a structure for maintaining an open state as shown in Patent Document 2. The door device described in Patent Document 2 includes: a locking protrusion provided on the door; and a locking spring formed by a substantially U-shaped leaf spring, one of which is bent to form a protrusion that the locking protrusion passes over when the door is opened.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2023-061036

[0005] Patent Document 2: Japanese Patent Application Laid-Open No. 6-153334

[0006] Since the locking spring disclosed in Patent Document 2 is formed of a substantially U-shaped leaf spring, a large space is required around the shaft, resulting in an increase in the size of the device.

[0007] In addition, the protrusion formed on the locking spring is formed at the free end of the leaf spring, but since the free end is set in a free state in the direction of advance and retreat relative to the locking protrusion, the position of the protrusion relative to the locking protrusion is difficult to determine. If the protrusion leaves the locking protrusion, the holding force for keeping the door in an open state is insufficient. On the contrary, if the protrusion is close to the locking protrusion, there is a concern that a large operating force is required to close the door, or excessive force is applied to the leaf spring, causing plastic deformation of the leaf spring. Therefore, it is desirable to appropriately obtain the holding force for keeping the door in an open state. Summary of the invention

[0008] The medium conveying device of the present invention for solving the above-mentioned technical problems is characterized in that it has a conveying path for conveying a medium, and comprises: a device body; a door portion, which can be opened and closed relative to the device body with a rotating shaft extending in a vertical direction as the center; and a door holding portion, which keeps the door portion in a state of being opened more than a predetermined angle relative to the device body, the door portion forming at least a part of the conveying path, and the door holding portion has: a flat leaf spring, which is arranged on one side of the door portion and the device body; and a locking portion, which is arranged on the other side of the door portion and the device body, the leaf spring has: a fixed end, which is one end of the leaf spring, which is installed on one side of the door portion and the device body; a free end, which is the other end of the leaf spring, which can slide relative to one side of the door portion and the device body; and a convex portion, which is located between the fixed end and the free end, and the convex portion keeps the door portion in a state of being opened more than the predetermined angle by applying a spring force to the locking portion.

[0009] Furthermore, the recording device of the present invention is characterized by comprising: the above-mentioned medium transport device; and a recording unit accommodated in the device body and performing recording on the medium transported in the transport path. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a diagram showing a media transport path of a printer.

[0011] Figure 2 This is a perspective view of the printer with its door closed.

[0012] Figure 3 This is a perspective view of the printer with its door open.

[0013] Figure 4 This is a perspective view of the locking mechanism in a state where the door portion is locked and closed.

[0014] Figure 5 It is a front view of the door and hinge in a closed state.

[0015] Figure 6 yes Figure 5 An enlarged view of the hinge portion.

[0016] Figure 7 It is a perspective view of the hinge part when the door part is opened.

[0017] Figure 8 It is a three-dimensional diagram of the hinge part.

[0018] Fig. 9 It is a perspective view of the hinge on the main body side.

[0019] Fig.10 It is a three-dimensional diagram of the door side hinge.

[0020] Fig.11 It is a three-dimensional diagram of a leaf spring.

[0021] Fig.12 It is a perspective view of the mounting frame.

[0022] Fig.13 This is a perspective view of the bent portion of the hinge provided on the main body side.

[0023] Fig.14 This is a diagram showing a main part of the hinge portion when the door portion is closed, as viewed from the -Z direction.

[0024] Fig.15 This is a diagram showing a main part of the hinge portion when the door portion is opened, as viewed from the -Z direction.

[0025] Fig.16 This is a diagram showing a main part of the hinge portion when the door portion is opened, as viewed from the -Z direction.

[0026] Fig.17 This is a diagram showing a main part of the hinge portion when the door portion is opened, as viewed from the -Z direction.

[0027] Fig.18 This is a diagram showing a main part of the hinge portion when the door portion is opened, as viewed from the -Z direction.

[0028] Fig.19 This is a diagram of a main part of a hinge according to another embodiment as viewed from the -Z direction.

[0029] Description of Reference Numerals

[0030] 1: inkjet printer; 2: device body; 3: first medium box; 6: operation panel; 7: scanner unit; 8: discharge tray; 10A, 10B, 10C, 10D: ink storage unit; 11A, 11B, 11C, 11D: assembly unit; 12: waste liquid storage unit; 13: conveyor belt; 14, 15: pulley; 19: supply roller; 20: separation roller; 21: pickup roller; 25: feed roller pair; 28, 31, 32, 33 , 34, 35, 36, 37, 38: conveying roller pair; 41: baffle; 43: head unit; 44: line head; 45: fixed portion; 46: mounting frame; 46a: threaded hole; 46b: positioning protrusion; 46c: long hole; 46d: supporting surface; 47: fixing screw; 60: door portion; 61: door body; 62: locking portion; 62a: rotating shaft; 63: operating lever; 64: plate member; 64a: positioning protrusion; 65: fixed Fixed screw; 70: hinge; 70a: door holding portion; 71: door side hinge; 71a: screw insertion hole; 71b1, 71b2: positioning holes; 71c: door side shaft insertion portion; 71d: shaft insertion hole; 71e: engagement portion; 71k: plate surface; 72: main body side hinge; 72a: screw insertion hole; 72b: positioning hole; 72c: main body side shaft insertion portion; 72d: shaft insertion hole; 72e: recess; 72f: bent portion; 72 g: connecting part; 72h: positioning part; 72j: positioning hole; 72k: plate surface; 73: rotating shaft; 74: leaf spring; 74a: screw insertion hole; 74b: hooking part; 74c: hooking part; 74d: convex part; 74e: fixed end; 74f: free end; 74g: top; 74h: first inclined surface; 74j: second inclined surface; T1: conveying path during recording; T2: flipping path; T3: connecting path; T4: reversing path. DETAILED DESCRIPTION

[0031] Hereinafter, the present invention will be briefly described.

[0032] The medium conveying device involved in the first embodiment is characterized in that it has a conveying path for conveying medium and is equipped with: a device body; a door portion, which can be opened and closed relative to the device body with a rotating shaft extending in the vertical direction as the center; and a door holding portion, which keeps the door portion in a state of being opened more than a predetermined angle relative to the device body, the door portion forming at least a part of the conveying path, and the door holding portion has: a flat leaf spring, which is arranged on one side of the door portion and the device body; and a locking portion, which is arranged on the other side of the door portion and the device body, the leaf spring having: a fixed end, which is one end of the leaf spring, which is installed on one side of the door portion and the device body; a free end, which is the other end of the leaf spring, which can slide relative to one side of the door portion and the device body; and a convex portion, which is located between the fixed end and the free end, and the convex portion keeps the door portion in a state of being opened more than the predetermined angle by applying a spring force to the locking portion.

[0033] According to this aspect, by opening the door, at least a paper jam in the conveying path corresponding to the door can be processed. At this time, the door can be maintained in an open state by the door holding portion, so it is easy to approach the device body during a paper jam processing operation.

[0034] Furthermore, since the leaf spring is a flat plate-shaped member having the free end and the fixed end, it is possible to reduce the space required for providing a member for holding the door portion in an open state, thereby preventing the device from being enlarged.

[0035] In addition, by adopting a structure in which the leaf spring is provided with a free end and the free end slides relative to one of the door portion and the device body, the position of the protrusion relative to the engaging portion becomes easy to determine. As a result, a holding force for keeping the door portion in an open state can be appropriately obtained.

[0036] The second method is a method subordinate to the first method, and is characterized in that the door portion has a door body and a door side hinge, the device body has a mounting frame and a body side hinge, the leaf spring is arranged on one of the door side hinge and the body side hinge, and the locking portion is arranged on the other of the door side hinge and the body side hinge.

[0037] According to this aspect, in the structure including the door-side hinge and the body-side hinge, the effects of the first aspect can be obtained.

[0038] A third aspect is an aspect dependent on the second aspect, and is characterized in that the leaf spring is fixed to one of the door-side hinge and the body-side hinge by a screw that fixes one of the door-side hinge and the body-side hinge.

[0039] According to this method, since the leaf spring is fixed to one of the door side hinge and the main body side hinge by a screw that fixes one of the door side hinge and the main body side hinge, a special process for fixing the leaf spring is not required, the operability is improved, and it can help to reduce costs.

[0040] The fourth method is a method subordinate to the second method, and is characterized in that one of the door side hinge and the main body side hinge has a spring retaining portion, and the spring retaining portion is used to temporarily fix the leaf spring at a fixed position relative to one of the door side hinge and the main body side hinge.

[0041] According to this method, since one of the door side hinge and the main body side hinge has a spring retaining portion, and the spring retaining portion is used to temporarily fix the leaf spring at a fixed position relative to one of the door side hinge and the main body side hinge, the operability when fixing the leaf spring to one of the door side hinge and the main body side hinge is improved.

[0042] It should be noted that this embodiment is not limited to the second embodiment described above, but may also be subordinate to the third embodiment described above.

[0043] A fifth aspect is an aspect dependent on the second aspect, and is characterized in that the convex portion is arranged between the rotation shaft and one of the door-side hinge and the body-side hinge.

[0044] According to this aspect, since the convex portion is arranged using the space between the rotation shaft and one of the door-side hinge and the body-side hinge, the device can be miniaturized.

[0045] It should be noted that this embodiment is not limited to the second embodiment described above, and may also be subordinate to the third or fourth embodiment described above.

[0046] A sixth aspect is an aspect dependent on the second aspect, and is characterized in that the leaf spring is provided on the main body-side hinge, and the engaging portion is provided on the door-side hinge.

[0047] Since the fixed end and the free end of the leaf spring are supported, if a portion for the support is provided on the rotating side, i.e., the door portion, the rotating side, is prone to be enlarged. However, according to this embodiment, since the leaf spring is provided on the main body side hinge and the engaging portion is provided on the door side hinge, the enlargement of the door portion can be suppressed.

[0048] It should be noted that this embodiment is not limited to the second embodiment described above, but may also be subordinate to any one of the third to fifth embodiments described above.

[0049] A seventh aspect is an aspect dependent upon the sixth aspect, and is characterized in that the door-side hinge includes a door-side shaft insertion portion through which the rotation shaft is inserted, and the engaging portion is provided at the door-side shaft insertion portion.

[0050] According to this embodiment, since the door-side hinge has a door-side shaft insertion portion through which the rotation shaft is inserted, and the engaging portion is provided at the door-side shaft insertion portion, the device can be miniaturized compared to a structure in which the engaging portion is provided exclusively.

[0051] An eighth aspect is an aspect dependent upon the first aspect, and is characterized in that a plurality of the door holding portions are provided along the axial direction of the rotation shaft.

[0052] According to this aspect, since the door holding portion is provided in plurality along the axial direction of the rotation shaft, the door portion can be more reliably held in an open state.

[0053] It should be noted that this embodiment is not limited to the first embodiment described above, but may also be subordinate to any one of the second to seventh embodiments described above.

[0054] The ninth method is a method subordinate to the second method, and is characterized in that the main body side hinge has a bent portion bent in a direction intersecting the surface on which the leaf spring is provided, the bent portion has a connecting portion connected to the surface on which the leaf spring is provided, and a positioning portion extending from the connecting portion, and the main body side hinge is positioned in the vertical direction by the positioning portion.

[0055] According to this aspect, since the main body side hinge is positioned in the vertical direction by the positioning portion, the positional accuracy of the main body side hinge in the vertical direction is improved, and the assembly work is facilitated.

[0056] In addition, the portion of the bent portion that is bent in a direction intersecting the surface on which the leaf spring is provided is difficult to achieve positional accuracy due to deformation. If this portion is set as the positioning portion, the position of the main body side hinge in the vertical direction is likely to deviate. However, according to this method, since the positioning portion is provided at a portion extending from the connecting portion, the position of the main body side hinge in the vertical direction can be determined more accurately.

[0057] It should be noted that this embodiment is not limited to the second embodiment, but may also be subordinate to any one of the third to eighth embodiments.

[0058] A tenth aspect is an aspect dependent on the first aspect, and is characterized in that, when the door portion is opened by more than the predetermined angle, the engaging portion is located on the free end side relative to the top of the convex portion.

[0059] In the case of a structure in which the engaging portion is located on the free end side relative to the top of the convex portion when the door portion is opened to a predetermined angle or more, the deformation of the convex portion can be released toward the free end side when the door portion is opened. As a result, the load when the door portion is opened can be suppressed.

[0060] It should be noted that this embodiment is not limited to the first embodiment, but may also be any one of the second to ninth embodiments.

[0061] The eleventh method is a method subordinate to the first method, and is characterized in that the convex portion has a first inclined surface inclined toward the free end, and when the door portion is rotated in a closing direction from a state in which the door portion is opened at an angle greater than the predetermined angle and the engaging portion does not abut against the convex portion, so that the point where the engaging portion abuts against the convex portion serves as the abutment point, the angle formed by a line orthogonal to a line connecting the center of the rotation axis and the abutment point and the first inclined surface is less than 45°.

[0062] When the engaging portion passes over the convex portion from the fixed end side to the free end side, it can easily pass over with the help of the sliding of the free end. However, when the engaging portion passes over the convex portion from the free end side to the fixed end side, the convex portion wants to deform in the direction opposite to the sliding direction of the free end, that is, to the fixed end side, so a large resistance is generated.

[0063] According to this aspect, since the angle formed by the line perpendicular to the line connecting the center of the rotation shaft and the contact point and the first inclined surface is smaller than 45 degrees, the resistance can be suppressed.

[0064] It should be noted that this embodiment is not limited to the first embodiment, but may also be any one of the second to tenth embodiments.

[0065] The twelfth mode is a mode subordinate to the first mode, and is characterized in that the convex portion has: a first inclined surface inclined toward the free end; and a second inclined surface inclined toward the fixed end, and the inclination angle of the first inclined surface is smaller than the inclination angle of the second inclined surface.

[0066] When the engaging portion passes over the convex portion from the fixed end side to the free end side, it can easily pass over with the help of the sliding of the free end. However, when the engaging portion passes over the convex portion from the free end side to the fixed end side, the convex portion wants to deform in the direction opposite to the sliding direction of the free end, that is, to the fixed end side, so a large resistance is generated.

[0067] According to this aspect, since the inclination angle of the first inclined surface inclined toward the free end is smaller than the inclination angle of the second inclined surface inclined toward the fixed end, the resistance can be suppressed.

[0068] It should be noted that this embodiment is not limited to the first embodiment described above, and may also be subordinate to any one of the second to eleventh embodiments described above.

[0069] A thirteenth aspect is a aspect subordinate to the first aspect, and is characterized in that the predetermined angle is greater than or equal to 60°.

[0070] According to this aspect, since the predetermined angle is 60 degrees or more, the door portion can be kept open while the door portion has a secured opening angle, and access to the apparatus body is facilitated during a paper jam handling operation.

[0071] It should be noted that this embodiment is not limited to the first embodiment described above, and may also be subordinate to any one of the second to twelfth embodiments described above.

[0072] A fourteenth aspect is an aspect dependent on the first aspect, and is characterized in further comprising a lock portion for holding the door portion in a closed state relative to the device body.

[0073] According to this aspect, since the lock portion that holds the door portion in a closed state relative to the device body is further provided, the closed state of the door portion can be reliably maintained.

[0074] It should be noted that this embodiment is not limited to the first embodiment, but may also be subordinate to any one of the second to thirteenth embodiments.

[0075] A recording device according to a fifteenth aspect comprises: the medium transport device according to any one of the first to fourteenth aspects; and a recording unit accommodated in the device body and performing recording on the medium transported in the transport path.

[0076] According to this aspect, in a recording device including a recording unit that records on a medium, the effects of any one of the first to fourteenth aspects can be obtained.

[0077] The sixteenth mode is a mode subordinate to the fifteenth mode, and is characterized in that it further comprises: a medium containing portion, located below the recording portion, capable of containing a medium recorded by the recording portion; and a medium loading portion, located above the recording portion, from which the medium recorded by the recording portion is discharged and loaded, and when viewed from a direction perpendicular to the door portion, the door portion overlaps with the recording portion, the medium containing portion, and the medium loading portion.

[0078] In a structure where the door overlaps the recording unit, the medium storage unit, and the medium loading unit when viewed from a direction perpendicular to the door, there is a concern that the door becomes larger and heavier and becomes difficult to keep open. However, the first embodiment can appropriately keep the door open.

[0079] Hereinafter, the present invention will be described in detail.

[0080] Hereinafter, an inkjet printer 1 for recording by ejecting ink as an example of liquid onto a medium represented by recording paper will be described as an example of a recording device. Hereinafter, the inkjet printer 1 is simply referred to as a printer 1. It should be noted that from the perspective of conveying a medium, the printer 1 can also be understood as a medium conveying device 100. In this case, the printer 1 includes the medium conveying device 100 and a line head 44 as an example of a recording unit described later.

[0081] It should be noted that the XYZ coordinate system shown in each figure is an orthogonal coordinate system, and the Y-axis direction is the direction intersecting the conveying direction of the medium, that is, the width direction of the medium, and is also the depth direction of the device. The +Y direction in the Y-axis direction is the direction from the front of the device to the back of the device, and the -Y direction is the direction from the back of the device to the front of the device.

[0082] The X-axis direction is the width direction of the device. When viewed from the operator of the printer 1, the +X direction is the left side and the -X direction is the right side. The Z-axis direction is the vertical direction, which is the normal direction relative to the mounting surface G of the printer 1, that is, the height direction of the device. The +Z direction of the Z-axis direction is the upward direction, and the -Z direction is the downward direction.

[0083] In the following, the direction in which the medium is sent is sometimes referred to as "downstream", and the opposite direction is sometimes referred to as "upstream". Figure 1 In the figure, the medium conveying path is shown by a dotted line. In the printer 1, the medium passes through Figure 1 The medium is transported along the medium transport path shown by the dotted line.

[0084] The F axis direction is the medium conveying direction between the line head 44 and the conveying belt 13 described later, that is, in the recording area, the +F direction is the downstream of the conveying direction, and the opposite -F direction is the upstream of the conveying direction. The V axis direction is the direction orthogonal to the F axis direction.

[0085] The printer 1 is a multifunction peripheral including a scanner unit 7 as an example of an image reading device on an upper portion of a device body 2. However, the scanner unit 7 may be omitted.

[0086] An operation panel 6 for performing various operation settings is provided on the upper portion of the apparatus body 2. The printer 1 has the side where the operation panel 6 is provided, that is, the side in the -Y direction as the apparatus front.

[0087] The printer 1 is configured so that an expansion unit (not shown) can be connected to the lower portion of the apparatus body 2 and the medium can be fed from the expansion unit. However, the expansion unit does not necessarily need to be connected.

[0088] Figure 1 Reference numeral 28 denotes a pair of conveying rollers for conveying a medium fed from an additional unit (not shown) into the apparatus main body 2 .

[0089] The apparatus main body 2 includes a first medium cassette 3 as an example of a medium storage portion for storing a medium at a lower portion.

[0090] A pickup roller 21 for delivering the stored medium in the −X direction is provided with respect to the first medium cassette 3 . The medium delivered by the pickup roller 21 is conveyed toward the transport roller pair 31 by the feed roller pair 25 .

[0091] It should be noted that, unless otherwise specified, the “roller pair” is composed of a driving roller that is driven by a driving source (not shown) to apply a conveying force to a medium, and a driven roller that contacts the driving roller or the medium and rotates therewith.

[0092] The medium receiving the conveying force from the conveying roller pair 31 is conveyed to a position between a line head 44 as an example of a recording head and the conveying belt 13, that is, facing the line head 44. Hereinafter, the medium conveying path from the conveying roller pair 31 to the conveying roller pair 32 is referred to as a recording conveying path T1.

[0093] The head unit 43 is constituted by a line head 44 as an example of a recording unit. The line head 44 performs recording by ejecting ink onto the surface of the medium. The line head 44 is an ink ejection head configured in such a manner that the nozzles ejecting ink cover the entire area in the width direction of the medium, and is configured to be able to record on the entire area of ​​the width of the medium without moving in the width direction of the medium. However, the ink ejection head is not limited to this, and may also be a type that is mounted on a carriage and ejects ink while moving in the width direction of the medium.

[0094] The head unit 43 is provided to be able to advance and retreat relative to the recording conveyance path T1 , and is provided to be able to move between a recording position where it enters the recording conveyance path T1 to record on a medium and a retreat position where it retreats from the recording conveyance path T1 .

[0095] Figure 1 The state in which the head unit 43 is located at the recording position is shown, and recording is performed on the medium in this state.

[0096] Reference numerals 10A, 10B, 10C, and 10D are ink containers as liquid containers. Ink ejected from the line head 44 is supplied from each ink container to the line head 44 via a tube (not shown). The ink containers 10A, 10B, 10C, and 10D are provided so as to be attachable to and detachable from the mounting portions 11A, 11B, 11C, and 11D, respectively.

[0097] In addition, reference numeral 12 denotes a waste liquid storage portion for storing ink as waste liquid ejected from the line head 44 toward a flushing cap (not shown) for maintenance.

[0098] The conveyor belt 13 is an endless belt wound around pulleys 14 and 15, and is rotated by a motor (not shown) driving at least one of the pulleys 14 and 15. The medium is adsorbed to the belt surface of the conveyor belt 13 and is transported at a position opposite to the line head 44. The medium can be adsorbed to the conveyor belt 13 by a known adsorption method such as an air suction method and an electrostatic adsorption method.

[0099] Here, the recording conveying path T1 passing through the position opposite to the line head 44 intersects both the horizontal direction and the vertical direction, and conveys the medium upward. That is, the F-axis direction intersects both the horizontal direction and the vertical direction. Therefore, the ejection surface 44a that ejects ink in the line head 44 is also parallel to the F-axis direction and intersects both the horizontal direction and the vertical direction. In the present embodiment, the angle α formed by the F-axis direction relative to the horizontal direction is 75°. It should be noted that the angle α can also be appropriately changed to other angles within the range of 0°<α≤90°. For example, the angle α can also be set within the range of 45°≤α≤80°. It should be noted that when miniaturizing the device body 2, 60°≤α≤80° is preferred.

[0100] The medium on which the line head 44 has recorded on the first surface is further transported upward by the transport roller pair 32 located downstream of the transport belt 13 .

[0101] A flapper 41 is provided downstream of the conveying roller pair 32, and the conveying direction of the medium is switched by the flapper 41. When the medium is directly discharged, the conveying path of the medium is switched by the flapper 41 to the conveying roller pair 35 facing upward, and the medium is discharged by the conveying roller pair 35 toward the discharge tray 8 as an example of a medium loading unit.

[0102] In the case where recording is performed on the second side in addition to the first side of the medium, the conveying direction of the medium is directed toward the branch position K1 by the baffle 41. Then, the medium passes through the branch position K1 and enters the reversing path T2. In the present embodiment, the reversing path T2 is a medium conveying path on the upper side from the branch position K1. The conveying roller pair 36, 37 is provided in the reversing path T2. The medium entering the reversing path T2 is conveyed in the upward direction by the conveying roller pair 36, 37, and then after the lower edge of the medium passes through the branch position K1, the rotation direction of the conveying roller pair 36, 37 is switched, thereby conveying the medium in the downward direction.

[0103] The reversing path T2 is connected to the connecting path T3. In the present embodiment, the connecting path T3 is a medium conveying path from the branch position K1 to the conveying roller pair 34. In addition, the connecting path T3 is connected to the reversing path T4. In the present embodiment, the reversing path T4 is a medium conveying path from the conveying roller pair 34 to the conveying roller pair 31 through the conveying roller pair 38. The reversing path T4 is a conveying path upstream of the position opposite to the line head 44, and is a conveying path located vertically below the line head 44.

[0104] The medium conveyed downward from the branch position K1 receives conveying force from the conveying roller pairs 33 and 34 , reaches the conveying roller pair 38 , is bent and reversed, and is conveyed to the conveying roller pair 31 .

[0105] In the medium conveyed again to the position facing the line head 44, the second surface opposite to the first surface on which recording has been performed faces the line head 44. Thus, the line head 44 can perform recording on the second surface of the medium.

[0106] It should be noted that the supply roller 19 and the separation roller 20 provided near the conveying roller pair 38 are provided from Figure 1 The roller pair for delivering the medium from the supply tray is omitted in the figure.

[0107] Next, the door portion 60 and the hinge portion 70 will be described.

[0108] like Figure 1~Figure 3 As shown in FIG. 1 , a door portion 60 as an opening and closing body is provided on the side surface in the −X direction, that is, the right side surface of the device body 2 .

[0109] The door portion 60 forms a part of the reversing path T2, the connecting path T3, and a part of the reversing path T4 between the door portion 60 and the device body 2. In addition, the door portion 60 forms a part of the connecting path T3 and the reversing path T4 inside. Figure 2 to Figure 3 By opening the door portion 60 as shown in the variation of FIG. 1 , the interior of the device body 2 is exposed, thereby a part of the reversing path T2, the connecting path T3, and a part of the reverse path T4 are opened.

[0110] The door portion 60 includes Figure 1 The transport roller pairs 33, 36, 37 are rollers in the -X direction, the transport roller pair 34, the supply roller 19, the separation roller 20, and the transport roller pair 38 are rollers in the +Z direction. When the door 60 is opened, the clamping of the transport roller pairs 33, 36, 37, 38 is released.

[0111] By opening the door 60 in the above manner, when a paper jam occurs in the reversing path T2, the connecting path T3, or the reversing path T4, the jammed medium can be removed. Figure 1 Reference symbol Wa in the middle is an area occupied by the door portion 60 in the Z-axis direction.

[0112] The door portion 60 is rotatably connected to the device body 2 via a hinge portion 70 described later, and is opened and closed relative to the device body 2 by rotating. In the present embodiment, the rotation axis of the door portion 60 is parallel to the Z-axis direction. In the present embodiment, the door portion 60 is rotatably connected to the device body 2 at the end in the +Y direction, and rotates with the end in the -Y direction as a free end.

[0113] It should be noted that, in the door portion 60, Figure 4 The locking portion 62 is provided with a hook shape, and the locking portion 62 is locked to the locked portion 45 provided on the device body 2, so that the door portion 60 is locked in a closed state relative to the device body 2. The locking portion 62 is provided to be rotatable around a rotation axis 62a extending in the Z-axis direction, and the rotation axis 62a is rotated to switch Figure 4 The locked state shown in the figure and the unlocked state of leaving the locked portion 45. The detailed structure is omitted in the figure, but it can be opened by operating the operating lever 63 (see Figure 2 ) to rotate the rotating shaft 62a.

[0114] As described above, since the lock portion 62 for holding the door 60 in the closed state relative to the device body 2 is provided, the closed state of the door 60 can be reliably held.

[0115] Here, when the door 60 is opened to handle the paper jam, if the door 60 is closed due to its own weight, the paper jam handling operation becomes difficult. In this embodiment, the rotation axis of the door 60 is parallel to the Z-axis direction. If the placement surface G of the device body 2 is a horizontal plane, the door 60 will not try to rotate in the closing direction due to its own weight when it is opened. However, if the device body 2 is placed in a Figure 1When the door 60 is opened, the door 60 will generate a moment of force to close due to its own weight. It should be noted that the angle β is the angle between the side surface of the device body 2 in the -X direction and the horizontal plane.

[0116] Similarly, if the device body 2 is placed at an angle γ (refer to Figure 2 ) is tilted in the direction in which the door portion 60 becomes larger, when the door portion 60 is opened, the door portion 60 will generate a moment attempting to close due to its own weight.

[0117] Then, the hinge portion 70 that rotatably connects the door portion 60 to the device body 2 is configured to hold the door portion 60 in an open state.

[0118] Hereinafter, the hinge portion 70 will be described in detail.

[0119] In this embodiment, if Figure 3 , Figure 5 As shown, a plurality of hinge parts 70 are provided along the Z-axis direction. In this embodiment, two hinge parts are provided as an example. Of course, this is an example, and one hinge part 70 may be provided, or three or more hinge parts may be provided.

[0120] Figure 5 Reference numeral 46 denotes a mounting frame constituting the device body 2 , and the hinge portion 70 is first mounted on the door body 61 of the door portion 60 , and then fixed to the mounting frame 46 .

[0121] like Figure 8 As shown, the hinge portion 70 includes a main body side hinge 72 fixed to the device main body 2, a door side hinge 71 fixed to the door portion 60, a rotation shaft 73, and a leaf spring 74. It should be noted that, Figure 8 The state of the hinge portion 70 in a state where the door portion 60 is closed is shown.

[0122] like Figure 7 As shown, the door side hinge 71 is fixed to the plate member 64 constituting the door body 61 by three fixing screws 65. In addition, the door side hinge 71 has positioning holes 71b1 and 71b2. Positioning protrusions 64a and 64a are formed on the plate member 64, and the positioning protrusions 64a and 64a are respectively fitted into the positioning holes 71b1 and 71b2, so that the door side hinge 71 is positioned relative to the plate member 64. It should be noted that the positioning hole 71b1 is different from the positioning hole 71b2 and is a long hole along the Z-axis direction. Even if the relative position of the positioning hole 71b1 and the positioning protrusion 64a in the Z-axis direction deviates slightly, it can be absorbed. The positioning hole 71b2 is formed in a shape and size that the positioning protrusion 64a is fitted almost without shaking, thereby positioning the door side hinge 71 in the direction along the surface of the plate member 64.

[0123] like Figure 6 As shown, the main body side hinge 72 is fixed to the mounting frame 46 constituting the device body 2 by three fixing screws 47. In addition, the main body side hinge 72 has two positioning holes 72b. Positioning protrusions 46b, 46b are formed on the mounting frame 46, and the positioning protrusions 46b, 46b are respectively engaged with the positioning holes 72b, 72b, so that the main body side hinge 72 is positioned relative to the mounting frame 46 in the Y-axis direction. It should be noted that the positioning hole 72b is a long hole along the Z-axis direction, and positioning along the Z-axis direction is not performed, but the positioning of the main body side hinge 72 relative to the mounting frame 46 in the Z-axis direction is performed by the positioning portion 72h and the long hole 46c described later (refer to Figure 7 ) is carried out.

[0124] Hereinafter, each member constituting the hinge portion 70 will be described in detail.

[0125] The main body side hinge 72 can be formed of a metal plate, and as an example, can be formed of SPCC (Steel Plate Cold Commercial: cold rolled steel plate). Fig. 9 As shown, three screw insertion holes 72a are formed in the main body side hinge 72, and the fixing screws 47 (see Figure 6 ) passes through the screw insertion hole 72a.

[0126] The main body side hinge 72 has main body side shaft insertion portions 72c formed at both ends in the Z-axis direction in a manner that they stand up from a plate surface 72k that is a surface of a metal plate toward the -X direction. A shaft insertion hole 72d is formed in the main body side shaft insertion portion 72c, and a rotation shaft 73 (see Figure 8 ) passes through the shaft insertion hole 72d.

[0127] In addition, the main body side hinge 72 has recessed portions 72e at both ends in the Z-axis direction. The hooking portion 74b (see Fig.11 ), thereby making it possible to temporarily fix the leaf spring 74 to the main body side hinge 72. That is, the recessed portion 72e functions as a spring holding portion for temporarily fixing the leaf spring 74 to the main body side hinge 72.

[0128] It should be noted that the main body side hinge 72 is provided with a positioning hole 72j, and the hook portion 74c of the leaf spring 74 (see Fig.11 ) is fitted into the positioning hole 72j. Thus, the position of the leaf spring 74 relative to the main body side hinge 72 is more accurately determined.

[0129] The main body side hinge 72 has a bent portion 72f bent from an edge portion in the -Y direction toward the +X direction. The details of the bent portion 72f will be described again later.

[0130] then, Fig.10 The door hinge 71 shown in the figure can be formed of a metal plate, and as an example, can be formed of SPCC (Steel Plate Cold Commercial: cold rolled steel plate). Fig.10 As shown, three screw insertion holes 71a are formed in the door side hinge 71, and the fixing screws 65 (see Figure 7 ) passes through the screw insertion hole 71a. It should be noted that the door side hinge 71 rotates together with the door portion 60, but Fig.10 The XYZ coordinate system shown is the state where the door 60 is closed, and will be used later. Fig.10 The structure of the door-side hinge 71 is explained using the XYZ coordinate system shown.

[0131] The door-side hinge 71 has a door-side shaft insertion portion 71c formed at both ends in the Z-axis direction so as to stand up from a plate surface 71k which is a surface of a metal plate toward the -X direction. A shaft insertion hole 71d is formed in the door-side shaft insertion portion 71c, and a rotation shaft 73 (see Figure 8 ) passes through the shaft insertion hole 71d. Then, the door side hinge 71 and the main body side hinge 72 are connected to each other via the rotation shaft 73 so as to be rotatable.

[0132] At the end of the door-side shaft insertion portion 71c in the +Y direction, a snap-fit ​​portion 71e is formed so as to protrude in the +Y direction. That is, the outer surface of the portion where the shaft insertion hole 71d is formed has a snap-fit ​​portion 71e as a portion where the outer diameter becomes larger in addition to a portion where the distance from the hole center of the shaft insertion hole 71d, i.e., the outer diameter is equal. Figure 14~Figure 19 In the figure, the portion where the outer diameter increases is shaded to show the portion. Figure 14~Figure 19 The area in the middle is shaded. The portion where the outer diameter increases, that is, the portion with the largest outer diameter in the engagement portion 71e, is the top of the engagement portion 71e.

[0133] then, Fig.11 The leaf spring 74 shown can be formed of a metal plate, and as an example, can be formed of SUS (Steel Use Stainless Steel). The leaf spring 74 is formed with two screw insertion holes 74a, and the fixing screws 47 (see Figure 6 ) passes through the screw insertion hole 74a. That is, the leaf spring 74 is fixed together with the main body side hinge 72 by the fixing screw 47.

[0134] The leaf spring 74 has protrusions 74d formed at both ends in the Z-axis direction so as to protrude in the -Y direction. Reference numeral 74f is a free end, reference numeral 74e is a fixed end, and the protrusion 74d is located between the free end 74f and the fixed end 74e in the Y-axis direction. The protrusion 74d and the above-mentioned engaging portion 71e together constitute the door holding portion 70a ( Figure 14~Figure 19), the door holding portion 70a keeps the door portion 60 open to a predetermined angle or more relative to the device body 2.

[0135] Then, if Fig.12 As shown, in the mounting frame 46 constituting the device body 2, three places are formed for fixing screws 47 (see Figure 6 ) The threaded hole 46a for fixing the main body side hinge 72. In addition, the above-mentioned positioning protrusion 46b is formed on the mounting frame 46.

[0136] Next, a long hole 46 c extending in the Z-axis direction is formed in the mounting frame 46 .

[0137] Here, the relationship between the bent portion 72 f provided in the main body-side hinge 72 and the long hole 46 c formed in the mounting frame 46 will be described.

[0138] The bottom surface of the long hole 46c plays the role of the supporting surface 46d. Figure 7 As shown, the bottom surface of the long hole 46c supports the positioning portion 72h of the bent portion 72f.

[0139] In more detail, Fig.13 As shown in FIG. 1 , the bent portion 72f is bent in a direction intersecting the plate surface 72k provided with the leaf spring 74 in the main body side hinge 72, that is, in the +X direction. The bent portion 72f includes a connecting portion 72g connected to the plate surface 72k, and a positioning portion 72h extending from the connecting portion 72g in the -Z direction. In addition, the lower surface Sb of the positioning portion 72h is supported by the supporting surface 46d of the long hole 46c formed in the mounting frame 46, thereby positioning the main body side hinge 72 in the vertical direction.

[0140] It should be noted that the lower surface Sb supported by the support surface 46d is the lower surface of a portion formed so as to protrude in the -X direction. Figure 6 As shown, the positioning portion 72h can fully engage with the supporting surface 46d of the long hole 46c.

[0141] By configuring as described above, the following effects can be obtained.

[0142] First, since the main body side hinge 72 is positioned in the vertical direction by the positioning portion 72h, the position accuracy of the main body side hinge 72 in the vertical direction is improved, and the main body side hinge 72 and even the door portion 60 are temporarily fixed before the screws are fixed during the assembly operation, so the assembly operation becomes easy.

[0143] Next, the portion of the bent portion 72f that is bent in the direction intersecting the plate surface 72k is difficult to achieve positional accuracy due to deformation. If this portion, specifically, the portion indicated by the reference numeral Sa, is set as the positioning portion, the position of the main body side hinge 72 in the vertical direction is likely to deviate. However, as described above, since the positioning portion 72h is provided at a portion extending from the connecting portion 72g, the position of the main body side hinge 72 in the vertical direction can be determined more accurately.

[0144] Next, the door holding portion 70 a constituted by the convex portion 74 d of the leaf spring 74 and the engaging portion 71 e of the door-side hinge 71 will be described in detail.

[0145] like Fig.14 As shown, the projection 74 d of the leaf spring 74 is shaped to project from the plate surface 72 k of the body-side hinge 72 in the +X direction, and the projection amount is set so as to be engageable with the engagement portion 71 e of the door-side hinge 71 .

[0146] Portions on both sides of the convex portion 74d in the Y-axis direction are in contact with the plate surface 72k, and the region from the fixed end 74e to the convex portion 74d and the region from the free end 74f to the convex portion 74d are in contact with the plate surface 72k.

[0147] The convex portion 74d has a first inclined surface 74h inclined from the top 74g toward the free end 74f and a second inclined surface 74j inclined from the top 74g toward the fixed end 74e.

[0148] It should be noted that, in the present embodiment, the first inclined surface 74h and the second inclined surface 74j are surfaces formed of flat surfaces without a curved surface. Reference symbol A1 indicates the Y-axis direction range of the first inclined surface 74h, and reference symbol A2 indicates the Y-axis direction range of the second inclined surface 74j, and the curved section including the top 74g is not included in the first inclined surface 74h and the second inclined surface 74j.

[0149] However, the first inclined surface 74h and the second inclined surface 74j may include a curved surface.

[0150] Fig.14 The hinge 70 is shown in a state in which the door 60 is completely closed. In this state, the engaging portion 71e is not engaged with the convex portion 74d. It should be noted that in this state, the top of the engaging portion 71e is located closer to the +Y direction than the top 74g of the convex portion 74d.

[0151] If the door 60 is opened from this state, Fig.15 As shown in FIG. 1 , the engaging portion 71e is pressed against the convex portion 74d. If the door portion 60 is further opened from this state, as shown in FIG. Fig.16As shown, the engaging portion 71e presses down the convex portion 74d, and then the top of the engaging portion 71e passes over the top 74g of the convex portion 74d in the -Y direction. At this time, since the free end 74f is not restricted in the Y-axis direction, when the engaging portion 71e presses down the convex portion 74d, the free end 74f moves in the -Y direction while sliding on the plate surface 72k.

[0152] Then, if the door 60 is further opened, Fig.17 As shown, the engaging portion 71e completely passes over the convex portion 74d in the -Y direction. However, the maximum opening angle of the door portion 60 may be an angle at which the engaging portion 71e does not completely pass over the convex portion 74d in the -Y direction. In other words, the maximum opening angle of the door portion 60 may be an angle at which the engaging portion 71e maintains contact with the convex portion 74d.

[0153] Then, when the door 60 attempts to close from this state, the engaging portion 71 e receives a reaction force from the convex portion 74 d , so that the door 60 is maintained in the open state.

[0154] Fig.18 The state at the time when the door 60 attempts to rotate counterclockwise in the figure as indicated by the hollow arrow, that is, attempts to close, and the engaging portion 71e contacts the convex portion 74d. Angle θ0 shows the opening angle of the door 60 at this time.

[0155] When the engaging portion 71e contacts the convex portion 74d, the moment generated by the deadweight of the door 60 exceeds the force of the door holding portion 70a that holds the door 60 in the open state, so the door 60 moves further toward the open position. Fig.18 However, the force of the door holding portion 70a that keeps the door portion 60 in the open state is eventually balanced with the moment generated by the deadweight of the door portion 60, so that the door portion 60 is kept in the open state. Fig.18 The angle θ1 is the angle at this time.

[0156] The door holding portion 70 a is used to keep the door 60 open relative to the device body 2 at a predetermined angle or more. The angle θ1 is an example of the predetermined angle.

[0157] The predetermined angle is preferably greater than or equal to 60°. Thus, the door 60 can be kept open at a predetermined angle or greater, making it easier to access the device body 2 during a paper jam handling operation or the like.

[0158] It should be noted that if the predetermined angle is greater than 80°, it becomes easier to approach the device body 2. Fig.18 As shown, by setting the predetermined angle to be greater than 90°, it is possible to make access to the device main body 2 easier. Fig.18 The angle θ1 shows a case where the predetermined angle is 110°.

[0159] As described above, the door retaining portion 70a has a flat leaf spring 74 and a locking portion 71e, the leaf spring 74 has a fixed end 74e, a free end 74f that can slide relative to the device body 2, and a protrusion 74d located between the fixed end 74e and the free end 74f. The protrusion 74d maintains the door portion 60 in an open state above a predetermined angle by applying a spring force to the locking portion 71e.

[0160] Thus, the door 60 can be maintained in an open state, so that access to the apparatus main body 2 is facilitated during a paper jam handling operation or the like.

[0161] In addition, when the door holding portion 70a is formed of, for example, a torsion coil spring, and a force in the opening direction is always applied to the door portion 60 by the torsion coil spring, there is a concern that the load applied to the door portion 60 increases when closing the door portion 60, and the door portion 60 may be deformed. However, by forming the door holding portion 70a with a leaf spring 74, the above-mentioned adverse conditions can be suppressed.

[0162] Furthermore, since the leaf spring 74 is a flat plate-shaped member having the free end 74 f and the fixed end 74 e , the space required for providing a member for holding the door portion 60 in the open state can be reduced, thereby suppressing an increase in the size of the device.

[0163] In addition, assuming that the free end 74f is provided in a state where it is free to move forward and backward relative to the engaging portion 71e, it becomes difficult to determine the position of the convex portion 74d relative to the engaging portion 71e. When the convex portion 74d is away from the engaging portion 71e, the holding force for keeping the door portion 60 in the open state is insufficient. On the contrary, when the convex portion 74d is close to the engaging portion 71e, there is a concern that a large operating force is required to close the door portion 60, or excessive force is applied to the leaf spring 74, causing the leaf spring 74 to undergo plastic deformation.

[0164] However, in the present embodiment, by adopting a structure in which the free end 74f of the leaf spring 74 slides relative to the device body 2, the position of the protrusion 74d relative to the engaging portion 71e becomes easy to determine. As a result, it is possible to properly obtain a holding force for keeping the door portion 60 in an open state. If it is possible to properly obtain a holding force for keeping the door portion 60 in an open state, the open state of the door portion 60 can be reliably maintained. In addition, it is possible to suppress the load from unintentionally increasing when opening and closing the door portion 60, and it is also possible to avoid excessive force being applied to the leaf spring 74 to cause plastic deformation of the leaf spring 74.

[0165] It should be noted that in the present embodiment, the free end 74f slides to release the deformation of the convex portion 74d when the door portion 60 is opened, but the free end 74f may slide to release the deformation of the convex portion 74d when the door portion 60 is closed. Specifically, the fixed end 74e may be set as the free end, and the free end 74f may be set as the fixed end.

[0166] It should be noted that, in this embodiment, Figure 1 It is clear that the door portion 60 overlaps the line head 44, the first medium cassette 3, and the discharge tray 8 when viewed from the direction perpendicular to the door portion 60, that is, the -X direction. In other words, the line head 44, at least a portion of the first medium cassette 3, and at least a portion of the discharge tray 8 enter the range of the area Wa occupied by the door portion 60 in the Z-axis direction.

[0167] In such a structure, there is a concern that the door portion 60 becomes larger and heavier, and it may be difficult to keep the door portion 60 in an open state. However, the door holding portion 70a described above can appropriately keep the door portion 60 in an open state.

[0168] It should be noted that, in the present embodiment, the entire line head 44, a portion of the first medium box 3, and the entire discharge tray 8 enter the range of the area Wa occupied by the door portion 60 in the Z-axis direction, but the present invention is not limited thereto, and the entire line head 44, the entire first medium box 3, and a portion of the discharge tray 8 may enter the range of the area Wa occupied by the door portion 60. Alternatively, the entire line head 44, the entire first medium box 3, and the entire discharge tray 8 may enter the range of the area Wa.

[0169] In addition, in this embodiment, the door portion 60 has a door body 61 and a door-side hinge 71 , the device body 2 has a mounting frame 46 and a body-side hinge 72 , the leaf spring 74 is provided on the body-side hinge 72 , and the engaging portion 71 e is provided on the door-side hinge 71 .

[0170] However, the leaf spring 74 may be provided on the door-side hinge 71 , and the engaging portion 71 e may be provided on the main body-side hinge 72 .

[0171] In addition, the door side hinge 71 may be integrally formed with the door portion 60. For example, the door side hinge 71 may be integrally formed with the plate member 64 ( Figure 7 ) are integrally constituted.

[0172] Similarly, the main body side hinge 72 may be integrally formed with the device main body 2. For example, the main body side hinge 72 may be integrally formed with the mounting frame 46 ( Fig.12 ) are integrally constituted.

[0173] In addition, the leaf spring 74 may be provided directly on the device body 2 or the door 60 independently of the hinge portion 70 , and similarly, the engaging portion 71 e may be provided directly on the door 60 or the device body 2 independently of the hinge portion 70 .

[0174] In addition, by providing the leaf spring 74 on the main body-side hinge 72 and providing the engaging portion 71 e on the door-side hinge 71 as in the present embodiment, the following effects can be obtained.

[0175] That is, since the fixed end 74e and the free end 74f of the leaf spring 74 are supported, if a portion for supporting is provided on the rotating side, i.e., the door portion 60, the rotating side, i.e., the door portion 60, is easily enlarged. However, in this embodiment, since the leaf spring 74 is provided on the main body side hinge 72 and the engaging portion 71e is provided on the door side hinge 71, the enlargement of the door portion 60 can be suppressed.

[0176] In the present embodiment, the fixing screw 47 (see Figure 6 ), the leaf spring 74 is fixed to the main body side hinge 72. Thus, a dedicated process for fixing the leaf spring 74 is not required, the workability is improved, and it can contribute to cost reduction.

[0177] It should be noted that the leaf spring 74 can also be fixed to the door-side hinge 71 by fixing the door-side hinge 71 to the door portion 60 by fixing screws 65 (see Figure 7 ) Fix the leaf spring 74 to the door side hinge 71.

[0178] In addition, in this embodiment, the main body side hinge 72 has a recessed portion 72e (see Fig. 9 ) is used as a spring holding portion for temporarily fixing the leaf spring 74 at a fixed position. As a result, the workability when fixing the leaf spring 74 to the main body side hinge 72 is improved.

[0179] In addition, when the leaf spring 74 is fixed to the door-side hinge 71 , a recessed portion similar to the recessed portion 72 e may be provided in the door-side hinge 71 .

[0180] In addition, in this embodiment, if Fig.14 As shown, the convex portion 74d is disposed between the rotation shaft 73 and the main body side hinge 72. As described above, since the convex portion 74d is disposed using the space between the rotation shaft 73 and the main body side hinge 72, the device can be miniaturized.

[0181] It should be noted that, when the leaf spring 74 is provided on the door-side hinge 71 , the convex portion 74 d may be arranged between the rotation shaft 73 and the door-side hinge 71 .

[0182] In this embodiment, the door hinge 71 has a door shaft insertion portion 71c through which the rotation shaft 73 is inserted, and the engaging portion 71e is provided in the door shaft insertion portion 71c. This can reduce the size of the device compared to a structure in which the engaging portion 71e is provided exclusively.

[0183] In addition, in the present embodiment, a plurality of door holding portions 70a are provided along the axial direction of the rotation shaft 73. More specifically, in the present embodiment, two door holding portions 70a are provided in one hinge portion 70. In addition, in the present embodiment, since two hinge portions 70 are provided, four door holding portions 70a are provided.

[0184] Thus, the door 60 can be more reliably maintained in the open state.

[0185] However, one door holding portion 70 a may be provided in one hinge portion 70 , or three or more door holding portions 70 a may be provided.

[0186] In addition, when a plurality of hinge portions 70 are provided, it is not necessary for all hinge portions 70 to include the door holding portion 70 a , and only a part of the hinge portions 70 may include the door holding portion 70 a .

[0187] In addition, in this embodiment, if Fig.16 or Fig.17 As shown, when the door 60 is opened to a predetermined angle or more, the engaging portion 71e is located on the free end 74f side relative to the top 74g of the convex portion 74d. According to such a structure, when the door 60 is opened, the deformation of the convex portion 74d can be released toward the free end 74f side. As a result, the load when the door 60 is opened can be suppressed.

[0188] Next, refer to Fig.18 The inclination angles of the first inclined surface 74h and the second inclined surface 74j will be described.

[0189] Fig.18 The reference numeral P1 in the figure is the axis center of the rotation shaft 73. In addition, the reference numeral P2 is a state where the door portion 60 is opened at an angle greater than a predetermined angle and the engaging portion 71e does not abut against the convex portion 74d. Fig.17 The state shown is a contact point when the engagement portion 71e is rotated in the closing direction and contacts the convex portion 74d.

[0190] The line L1 is a line connecting the shaft center P1 and the contact point P2, and the line L2 is a line perpendicular to the line L1. The reference numeral e3 is an angle formed between the line L2 and the first inclined surface 74h.

[0191] In this embodiment, the angle e3 is smaller than 45°.

[0192] Thereby, the following effects can be obtained.

[0193] That is, when the engaging portion 71e passes over the convex portion 74d from the fixed end 74e side to the free end 74f side, it can easily pass over due to the sliding of the free end 74f. However, when the engaging portion 71e passes over the convex portion 74d from the free end 74f side to the fixed end 74e side, since the convex portion 74d wants to deform in the direction opposite to the sliding direction of the free end 74f, that is, in the fixed end 74e side, a large resistance is generated. Fig.18 Indicated by arrow F. It should be noted that arrow fs is the component of the resistance F parallel to the first inclined surface 74h, and arrow fv is the component of the resistance F orthogonal to the first inclined surface 74h.

[0194] If the angle e3 is reduced, the component force fs parallel to the first inclined surface 74h increases, and the component force fv perpendicular to the first inclined surface 74h decreases. That is, by making the angle e3 smaller than 45°, the component force fv perpendicular to the first inclined surface 74h in the resistance F can be suppressed, and the door portion 60 can be closed with a light force. In addition, the engagement portion 71e cannot pass over the convex portion 74d, which can suppress the leaf spring 74 from plastic deformation.

[0195] It should be noted that Fig.18 Reference symbol e1 is the inclination angle of the first inclined surface 74h, that is, the angle between the plate surface 72k and the first inclined surface 74h. Reference symbol e2 is the inclination angle of the second inclined surface 74j, that is, the angle between the plate surface 72k and the second inclined surface 74j.

[0196] The inclination angle e1 is preferably smaller than the inclination angle e2.

[0197] This can suppress the resistance F and close the door 60 with a light force. In addition, it can suppress the engagement portion 71e from being unable to ride over the convex portion 74d and causing the leaf spring 74 to be plastically deformed.

[0198] However, the inclination angle e1 may be the same as the inclination angle e2, or the inclination angle e1 may be greater than the inclination angle e2.

[0199] In the above-described embodiments, as shown in FIG. Fig.14 As described above, when the door 60 is closed, the top of the engaging portion 71e is located closer to the +Y direction than the top 74g of the convex portion 74d, and when the door 60 is opened, the top of the engaging portion 71e passes over the top 74g of the convex portion 74d in the -Y direction. However, the present invention is not limited to such a structure, and may also be as follows: Fig.19 The top of the engaging portion 71e shown in the figure does not extend beyond the top 74g of the protrusion 740d in the -Y direction. Fig.19In the structure shown, the engaging portion 71e is a structure that contacts only the first inclined surface 74h in the -Y direction, rather than the top 74g of the convex portion 740d. Even with such a structure, the same effects as those of the above-mentioned embodiment can be obtained.

[0200] In addition, in the above-described embodiment, Fig.11 The leaf spring 74 shown is described as a leaf spring in its entirety, but may also be Fig.11 The area of ​​the leaf spring 74 shown that participates in the application of the spring force, that is, the area extending in the Y-axis direction from the fixed end 74e to the free end 74f is understood as a leaf spring. Fig.11 The leaf spring 74 shown includes two leaf springs, and the two leaf springs can be understood to be connected via a portion where a screw insertion hole 74 a and a hook portion 74 c are formed.

[0201] Furthermore, the present invention is not limited to the above-described embodiments and modifications, and various modifications are possible within the scope of the invention described in the claims, and such modifications are naturally included in the scope of the present invention.

Claims

1. A medium conveying device, characterized in that: The medium conveying device has a conveying path for conveying the medium, and comprises: Device body; a door portion capable of opening and closing relative to the device body about a rotation axis extending in a vertical direction; and a door holding portion for keeping the door portion open relative to the device body by more than a predetermined angle, The gate portion forms at least a portion of the conveying path, The door holding portion comprises: a flat plate spring provided on one of the door portion and the device body; and a locking portion, which is provided on the other of the door portion and the device body and is locked with the leaf spring, The leaf spring has: A fixed end is an end of the leaf spring and is mounted on one of the door portion and the device body; a free end, which is the other end of the leaf spring and is capable of sliding relative to the one of the door portion and the device body; and a convex portion, located between the fixed end and the free end, The convex portion applies a spring force to the engaging portion to thereby maintain the door portion in a state of being opened to a value greater than the predetermined angle.

2. The medium conveying device according to claim 1, characterized in that: The door portion comprises a door body and a door side hinge, The device body has a mounting frame and a body side hinge, The leaf spring is provided on one of the door-side hinge and the body-side hinge. The engaging portion is provided on the other of the door-side hinge and the body-side hinge.

3. The medium conveying device according to claim 2, characterized in that: The leaf spring is fixed to the one of the door-side hinge and the body-side hinge by a screw that fixes the one of the door-side hinge and the body-side hinge.

4. The medium conveying device according to claim 2, characterized in that: The one of the door-side hinge and the body-side hinge has a spring holding portion for temporarily fixing the leaf spring at a fixed position relative to the one of the door-side hinge and the body-side hinge.

5. The medium conveying device according to claim 2, characterized in that: The convex portion is disposed between the rotation shaft and one of the door-side hinge and the body-side hinge.

6. The medium conveying device according to claim 2, characterized in that: The leaf spring is arranged on the main body side hinge, The engaging portion is arranged on the door-side hinge.

7. The medium conveying device according to claim 6, characterized in that: The door-side hinge has a door-side shaft insertion portion through which the rotation shaft is inserted. The engaging portion is provided on the door-side shaft insertion portion.

8. The medium conveying device according to claim 1, characterized in that: A plurality of door holding portions are provided along the axial direction of the rotation shaft.

9. The medium conveying device according to claim 2, characterized in that: The main body side hinge has a bent portion bent in a direction intersecting with a surface on which the leaf spring is provided. The bent portion includes a connection portion connected to the surface on which the leaf spring is provided, and a positioning portion extending from the connection portion. The main body side hinge is positioned in the vertical direction by the positioning portion.

10. The medium conveying device according to claim 1, characterized in that: When the door portion is opened to a value greater than the predetermined angle, the engaging portion is located on the free end side relative to the top of the convex portion.

11. The medium conveying device according to claim 1, characterized in that: The convex portion has a first inclined surface inclined toward the free end, When the door portion is rotated in a closing direction from a state where the door portion is opened at an angle greater than the predetermined angle and the engaging portion does not abut against the convex portion, so that the point where the engaging portion abuts against the convex portion serves as the abutment point, An angle formed by a line perpendicular to a line connecting the center of the rotation axis and the abutment point and the first inclined surface is smaller than 45°.

12. The medium conveying device according to claim 1, characterized in that: The convex portion has: A first inclined surface, inclined toward the free end; and The second inclined surface is inclined toward the fixed end. An inclination angle of the first inclined surface is smaller than an inclination angle of the second inclined surface.

13. The medium conveying device according to claim 1, characterized in that: The predetermined angle is greater than 60°.

14. The medium conveying device according to claim 1, characterized in that: The medium transport device further includes a lock portion that holds the door portion in a closed state relative to the device body.

15. A recording device, characterized in that: have: The medium conveying device according to any one of claims 1 to 14; and The recording unit is housed in the device body and records on the medium transported in the transport path.

16. The recording device according to claim 15, characterized in that The recording device also includes: a medium storage unit located below the recording unit and capable of storing a medium recorded by the recording unit; as well as a medium loading section located above the recording section, and wherein the medium recorded by the recording section is discharged and loaded on the medium loading section, The door portion overlaps the recording portion, the medium storage portion, and the medium placement portion when viewed from a direction perpendicular to the door portion.

Images