Opening and closing body holding device, medium conveyance device, and recording device

Abstract

To suppress enlargement of a device in a configuration in which an angle of a support tray can be changed so as to expand a space above the support tray when performing maintenance of the device.SOLUTION: An opening / closing body holding device includes: a body part; a cover that is in an attached state to cover at least a part of the body part by fastening a fastening part to the body part, and becomes removable from the body part when the fastening part is removed; an opening / closing body that is switchable between a closed state that covers the fastening part fastened to the body part and a first open state that exposes the fastening part fastened to the body part; and a holding member that is detachable from the body part. The holding member is capable of holding the opening / closing body in a second open state in which the opening / closing body is further opened than the first open state.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to an opening / closing body holding device having an opening / closing body that can be opened and closed, and also to a medium transport device including the opening / closing body holding device, and a recording device including the medium transport device. [Background technology]

[0002] 2. Description of the Related Art Some recording devices, such as printers, are provided with an openable tray on the side of the device. When open, the tray is inclined to support the medium to be fed. The image forming apparatus described in Patent Document 1 is configured so that the angle of the manual feed tray can be changed, and the space above the manual feed tray can be expanded when performing maintenance on the apparatus.

[0003] Specifically, in the image forming apparatus described in Patent Document 1, a tray link is rotatably provided on the apparatus body, and a link slider is provided at the tip of the tray link. Guide portions for guiding the link slider are provided on both sides of the manual feed tray. The guide portions have a main rail and a sub-rail branching off from the main rail. When the link slider abuts against an end of the main rail, the manual feed tray is held in a first open state, and when the link slider abuts against an end of the sub-rail branching off from the main rail, the manual feed tray is held in a second open state in which it is opened from the first open state. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-156576 A Summary of the Invention [Problem to be solved by the invention]

[0005] The guide section described in Patent Document 1 has a main rail and a sub-rail branching off from the main rail, as described above, so the guide section is large in size in the direction intersecting with the surface of the manual feed tray.As a result, when the manual feed tray is stored, it is necessary to secure a large space on both sides of the manual feed tray in the device body to store the guide section, which increases the size of the device. [Means for solving the problem]

[0006] In order to solve the above problem, the opening / closing body holding device of the present invention comprises a main body, a cover that is in an attached state covering at least a portion of the main body when a fastening part is fastened to the main body and that can be removed from the main body when the fastening part is removed, an opening / closing body that can be switched between a closed state that covers the fastening part fastened to the main body and a first open state that exposes the fastening part fastened to the main body, and a holding member that is detachable from the main body, and is characterized in that the holding member is capable of holding the opening / closing body in a second open state in which the opening / closing body is further opened than the first open state.

[0007] The media transport device of the present invention further comprises a device main body having a media transport path for transporting media, and an opening / closing body holding device, wherein the main body is arranged to be openable and closable on the side of the device main body, and forms a part of the media transport path when closed, and opens a part of the media transport path when opened, and the opening / closing body is a support tray capable of supporting the media to be fed. A recording apparatus according to the present invention is characterized by comprising a recording section for recording on a medium, and the medium transport device. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a diagram showing a media transport path of the printer. [Diagram 2] FIG. 2 is an external perspective view of the printer with the door section closed. [Diagram 3] FIG. 2 is an external perspective view of the printer with the door open. [Figure 4]FIG. 4 is a perspective view of a locking mechanism that locks the door in a closed state. [Diagram 5] 3A and 3B are front views of the printer showing a first and second open states of the support tray. [Figure 6] FIG. 3 is a perspective view of the right side of the printer with the support tray open. [Figure 7] 13 is a perspective view of the door portion with the cover removed to expose the main body portion. FIG. [Figure 8] 13 is a perspective view of a holding member detachably provided at a free end of the door portion. FIG. [Figure 9] FIG. 1 is a perspective view of the right side of the printer with the support tray open and the arm removed. [Figure 10] FIG. [Figure 11] FIG. 13 is a diagram showing a state in which the support tray is held in a second open state by the holding member. [Figure 12] 13 is a perspective view showing a state in which a second engagement portion of the holding member is engaged with a rotation shaft of the feed roller. FIG. [Figure 13] 11 is a perspective view showing a state in which a first engagement portion of the holding member is engaged with the support tray. FIG. [Figure 14] FIG. [Figure 15] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will now be briefly described. The opening / closing body holding device of the first aspect comprises a main body, a cover that is in an attached state covering at least a portion of the main body when a fastening part is fastened to the main body and that can be removed from the main body when the fastening part is removed, an opening / closing body that can be switched between a closed state that covers the fastening part fastened to the main body and a first open state that exposes the fastening part fastened to the main body, and a holding member that is detachable from the main body, and is characterized in that the holding member is capable of holding the opening / closing body in a second open state in which the opening / closing body is further opened than the first open state.

[0010] According to this aspect, the opening / closing body is provided with a holding member capable of holding the opening / closing body in a second open state in which the opening / closing body is further opened than the first open state. Therefore, by setting the opening / closing body to the second open state, work can be easily performed above the opening / closing body. Since the holding member is detachable from the main body, there is no need to provide a mechanism for holding the opening / closing body in the second open state around the opening / closing body, and the size of the device can be reduced. Since the holding member can be disposed at an appropriate position on the main body, the holding member can be disposed at a desired position, and the size of the main body can be reduced by providing the holding member on the main body.

[0011] The second aspect is a dependent aspect of the first aspect, characterized in that the retaining member is a wire-like member having a first engagement portion at one end side that is engageable with the opening / closing body, and a second engagement portion at the other end side that is engageable with the main body portion.

[0012] According to this aspect, the retaining member is a wire-shaped member having a first engagement portion at one end that can engage with the opening / closing body, and a second engagement portion at the other end that can engage with the main body portion, thereby saving space required to install the retaining member on the main body portion and preventing the main body portion from becoming larger.

[0013] A third aspect is an aspect dependent on the second aspect, characterized in that the holding member restricts movement of the cover in a direction in which the cover is removed when the cover is in the attached state. The cover is attached to the main body by the fastening parts, but there is a risk that the portion of the cover that is not fastened by the fastening parts will bend in a direction away from the main body. If the cover is bent in this manner, a gap will be created between the main body and the cover, and dust and other particles may enter the main body, causing a risk of impairing the function of the main body. According to this aspect, when the cover is in the attached state, the retaining member restricts the movement of the cover in the direction of removing the cover, thereby suppressing the deflection and preventing dust and other particles from entering the main body portion. Furthermore, since the holding member not only holds the opening / closing body in the second open state but also suppresses bending of the cover as described above, the holding member can be utilized effectively. Incidentally, this aspect is not limited to the second aspect, and may be subordinate to the first aspect.

[0014] A fourth aspect is a dependent aspect of the third aspect, and is characterized in that the cover comprises a protrusion protruding toward the main body portion and a flange portion located at the top of the protrusion, the main body portion has a first opening exposing the protrusion, and the first engagement portion or the second engagement portion of the retaining member enters between the flange portion exposed at the first opening and the main body portion, thereby causing the retaining member to restrict movement of the cover in the direction of removing the cover.

[0015] According to this aspect, the first engagement portion or the second engagement portion of the retaining member is configured to enter between the flange and the main body portion, thereby restricting the movement of the cover in the direction in which the cover is removed, and therefore, a configuration in which the retaining member restricts the movement of the cover in the direction in which the cover is removed can be easily realized.

[0016] A fifth aspect is a dependent aspect of the fourth aspect, characterized in that the main body portion has a second opening, and when one of the first engagement portion and the second engagement portion of the retaining member enters between the flange portion and the main body portion, the other of the first engagement portion and the second engagement portion can enter the second opening.

[0017] When one of the first engagement portion and the second engagement portion of the retaining member is inserted between the flange portion and the main body portion and the other of the first engagement portion and the second engagement portion is free, the retaining member becomes prone to falling off. According to this aspect, when one of the first engagement portion and the second engagement portion of the retaining member enters between the flange portion and the main body portion, the other of the first engagement portion and the second engagement portion can enter the second opening, making the retaining member less likely to fall off from the main body portion.

[0018] A sixth aspect is an aspect dependent on the second aspect, characterized in that both ends of the wire-shaped member forming the holding member are bent. According to this aspect, the wire member forming the holding member has both ends bent, so that the holding member has good grippability.

[0019] The media transport device of the seventh aspect comprises a device main body having a media transport path for transporting a medium, and the opening / closing body holding device of any of the second to sixth aspects, wherein the main body is openably and closably provided on a side of the device main body, forms a part of the media transport path when closed, and opens a part of the media transport path when opened, and the opening / closing body is a support tray capable of supporting the medium to be fed.

[0020] According to this aspect, in the medium conveying device, the operational effects of any one of the second to sixth aspects described above can be obtained. However, this aspect may be subordinate to the above first aspect.

[0021] The media transport device of the eighth aspect comprises a device main body having a media transport path for transporting a medium, and the opening / closing body holding device of any of the third to fifth aspects, wherein the main body is openably and closably arranged on a side of the device main body, the opening / closing body is a support tray capable of supporting the medium to be fed, the device main body has a media storage section capable of storing a medium, the side of the device main body on which the media storage section is arranged is the front of the device main body, the main body is arranged on the right or left side of the device main body, and the holding member restricts movement of the cover in the direction of removal of the cover on the device front side of the cover when the main body is closed.

[0022] According to this aspect, in the medium conveying device, the operational effects of any one of the third to fifth aspects described above can be obtained. Furthermore, in a configuration in which the main body is provided on the right or left side of the device main body, when the cover bends in a direction away from the main body, the bending becomes easier to see from the user facing the device main body, and dust and other particles become more likely to enter through the gap between the main body and the cover. However, according to the present aspect, the retaining member restricts the movement of the cover in the direction of removing the cover on the front side of the device, thereby preventing the bending of the cover from being easily visible to the user and also preventing dust and other particles from easily entering through the gap between the main body and the cover.

[0023] A ninth aspect is an aspect dependent on the seventh aspect, and is characterized in that it comprises a feed roller that feeds a medium from the support tray and a rotation shaft of the feed roller, and the second engagement portion is capable of engaging with the rotation shaft of the feed roller.

[0024] According to this aspect, since the second engagement portion is capable of engaging with the rotation shaft of the feed roller, there is no need to provide a separate portion with which the second engagement portion engages, and therefore an increase in the cost of the device can be suppressed.

[0025] A tenth aspect is a dependent aspect of the ninth aspect, and is characterized in that a groove is formed in the rotating shaft of the feed roller, the feed roller is provided with a hook portion capable of engaging with the groove, and the second engagement portion is capable of engaging with the groove.

[0026] According to this aspect, the hook portion of the feed roller engages with a groove provided on the rotation shaft of the feed roller, thereby positioning the feed roller on the rotation shaft. Since the second engagement portion of the holding member can engage with the groove, there is no need to separately form a portion with which the second engagement portion engages, which can suppress an increase in cost of the device and ensure that the second engagement portion can engage with the rotation shaft of the feed roller.

[0027] An eleventh aspect is a dependent aspect of the seventh aspect, and is characterized in that the media transport path is provided with a plurality of media detection units for detecting media, and the plurality of media detection units can be accessed by removing the cover from the main body.

[0028] According to the present aspect, the media transport path is provided with multiple media detection units for detecting media, and by removing the cover from the main body, the multiple media detection units can be accessed, making it easy to perform maintenance on the media detection units. Incidentally, this aspect is not limited to the seventh aspect, but may be subordinate to any of the eighth to tenth aspects.

[0029] A recording device according to a twelfth aspect includes a recording section that records on a medium, and the medium conveying device according to the seventh aspect. According to this aspect, in a recording device having a recording section that records on a medium, the effects of the seventh aspect described above can be obtained. Incidentally, the recording device having a recording section that records on a medium is not limited to the medium transport device according to the seventh aspect, and may be equipped with the medium transport device according to any one of the eighth to eleventh aspects.

[0030] The present invention will be specifically described below. In the following, an inkjet printer 1 that performs recording by ejecting ink, which is an example of a liquid, onto a medium such as recording paper will be described as an example of a recording device. In the following, the inkjet printer 1 will be abbreviated to printer 1. Note that the printer 1 can also be considered as a medium transport device 100 from the viewpoint of transporting the medium. In this case, the printer 1 is equipped with the medium transport device 100 and a line head 44, which is an example of a recording unit, which will be described later.

[0031] The XYZ coordinate system shown in each figure is an orthogonal coordinate system, with the Y axis direction being the direction that intersects with the medium transport direction, i.e., the medium width direction, and also the device depth direction. The +Y direction of the Y axis direction is the direction from the front of the device to the rear of the device, and the -Y direction is the direction from the rear of the device to the front of the device. The X-axis direction is the width direction of the device, and as seen by 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 and is the normal direction to the mounting surface G of the printer 1, that is, the height direction of the device. Within the Z-axis direction, the +Z direction is the upward direction, and the -Z direction is the downward direction. In the following, the direction in which the medium is transported may be referred to as "downstream," and the opposite direction may be referred to as "upstream." In addition, the medium transport path is shown by a dashed line in Figure 1. In the printer 1, the medium is transported through the medium transport path shown by the dashed line in Figure 1.

[0032] The F-axis direction is the medium transport direction between a line head 44 and the transport belt 13 (described later), i.e., in the recording area, with the +F direction being the downstream transport direction and the opposite -F direction being the upstream transport direction. The V-axis direction is perpendicular to the F-axis direction.

[0033] 2, the printer 1 is a multifunction device equipped with a scanner unit 7, which is an example of an image reading device, on the top of the device main body 2. However, the scanner unit 7 may be omitted. An operation panel 6 for performing various operation settings is provided on the top of the device body 2. The side of the printer 1 in the -Y direction on which the operation panel 6 and a first medium cassette 3 (described later) are provided is defined as the device front. The printer 1 is also configured so that an add-on unit (not shown) can be connected to the bottom of the device main body 2, and is configured so that media can be fed from this add-on unit. However, the add-on unit does not have to be connectable.

[0034] The medium transport path of the printer 1 will now be described with reference to Figure 1. The device main body 2 has a first medium cassette 3, which is an example of a medium storage section that stores media, at its lower portion. A pick roller 21 that sends out the stored medium in the −X direction is provided for the first medium cassette 3. The medium sent out by the pick roller 21 is sent towards the transport roller pair 31 by the feed roller pair 25. In the following, unless otherwise specified, a "roller pair" is defined as consisting of a drive roller that is driven by a drive source (not shown) to apply a feeding force to the medium, and a driven roller that rotates in contact with the drive roller or the medium.

[0035] The medium receiving the feeding force from the transport roller pair 31 is sent between the line head 44, which is an example of a recording head, and the transport belt 13, that is, to a position facing the line head 44. Note that hereinafter, the medium transport path from the transport roller pair 31 to the transport roller pair 32 is referred to as the transport path T1 during recording. The line head 44, which is an example of a recording section, constitutes the head unit 43. 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 so that the nozzles that eject ink cover the entire area in the width direction of the medium, and is configured as an ink ejection head that can record over the entire 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 be a type that is mounted on a carriage and ejects ink while moving in the width direction of the medium.

[0036] The head unit 43 is provided so as to be capable of moving forward and backward relative to the transport path T1 during recording, and is provided so as to be movable between a recording position where it advances onto the transport path T1 during recording to record on the medium, and a retreat position where it retreats from the transport path T1 during recording. FIG. 1 shows a state in which the head unit 43 is in the recording position, and in this state recording is performed on the medium.

[0037] Reference numerals 10A, 10B, 10C, and 10D denote ink storage units serving as liquid storage units. Ink ejected from the line head 44 is supplied from each ink storage unit to the line head 44 via a tube (not shown). The ink storage units 10A, 10B, 10C, and 10D are detachably provided in the mounting units 11A, 11B, 11C, and 11D, respectively. Reference numeral 12 denotes a waste liquid storage section that stores ink as waste liquid discharged from the line head 44 toward a flushing cap (not shown) for maintenance purposes.

[0038] The conveyor belt 13 is an endless belt that is wound around pulleys 14 and 15, and rotates when at least one of the pulleys 14 and 15 is driven by a motor (not shown). The medium is conveyed to a position facing the line head 44 while being attracted to the belt surface of the conveyor belt 13. The medium can be attracted to the conveyor belt 13 by a known attraction method such as an air suction method or an electrostatic attraction method.

[0039] Here, the transport path T1 during recording, which passes through a position facing the line head 44, crosses both the horizontal and vertical directions and transports the medium upward. That is, the F-axis direction crosses both the horizontal and vertical directions. Therefore, the ejection surface 44a of the line head 44 that ejects ink is also parallel to the F-axis direction and crosses both the horizontal and vertical directions. In this embodiment, the angle α that the F-axis direction makes with the horizontal direction is 75°. The angle α may be changed to another angle within the range of 0°<α≦90°. For example, the angle α may be set to the range of 45°≦α≦80°. In addition, when the device body 2 is made compact, 60°≦α≦80° is preferable.

[0040] The medium on whose first side recording has been performed by the line head 44 is then conveyed further upward by the conveyor roller pair 32 positioned downstream of the conveyor belt 13 . A flap 41 is provided downstream of the transport roller pair 32, and the transport direction of the medium is switched by this flap 41. When the medium is to be discharged as is, the transport path of the medium is switched by the flap 41 to face the upper transport roller pair 35, and the medium is discharged by the transport roller pair 35 toward the discharge tray 8, which is an example of a medium placement section.

[0041] When recording is performed on the second side of the medium in addition to the first side, the transport direction of the medium is directed to the flap 42 by the flap 41. Usually, the flap 42 is tilted in the counterclockwise direction in FIG. 1, and the medium pushes aside the flap 42 and enters the switchback path T2. In this embodiment, the switchback path T2 is the medium transport path above the flap 42. The switchback path T2 is provided with transport roller pairs 36 and 37. The medium that has entered the switchback path T2 is transported upward by the transport roller pairs 36 and 37, and when the lower edge of the medium passes the flap 42 and a predetermined time has elapsed, the rotation direction of the transport roller pairs 36 and 37 is switched, whereby the medium is transported downward. At this time, the flap 42 guides the medium transported downward so that the medium is directed toward the transport roller pair 33.

[0042] A connection path T3 is connected to the switchback path T2. In this embodiment, the connection path T3 is a medium transport path from the position of the flap 42 to the transport roller pair 34. A reversing path T4 is connected to the connection path T3. In this embodiment, the reversing path T4 is a medium transport path from the transport roller pair 34 to the transport roller pair 31 through the transport roller pair 38. The reversing path T4 is a transport path upstream of a position facing the line head 44 and is located vertically below the line head 44.

[0043] The medium conveyed downward from the position of the flap 42 receives a feeding force from the pairs of conveying rollers 33 and 34 , reaches the pair of conveying rollers 38 , is curved and reversed, and is sent to the pair of conveying rollers 31 . The medium is again sent to a position facing the line head 44, with the second side opposite the first side on which recording has already been performed facing the line head 44. This makes it possible for the line head 44 to record on the second side of the medium.

[0044] A feed roller 19 and a separation roller 20 are provided near the transport roller pair 38. The feed roller 19 is a roller that feeds the medium from the support tray 17 (see FIGS. 2 and 5) that is omitted from FIG. 1, and rotates by receiving power from a motor (not shown). The separation roller 20 is given rotational resistance by a torque limiter (not shown), and separates the medium by nipping it between the feed roller 19 and the separation roller 20.

[0045] 2 and 5, the support tray 17 is an example of an opening / closing body, and is provided openably and closably on the right side surface of the printer 1. The support tray 17 is provided rotatably with respect to a door unit 60 (described below) via a rotation shaft 17c (see FIG. 5), and opens and closes by rotating. The support tray 17 is opened and closed by a user operation. The support tray 17 is configured to be able to hold a first open state indicated by reference numeral 17-1 in Fig. 5, and a second open state indicated by reference numeral 17-2 in which the support tray 17 is further opened than the first open state. The first open state is the state of the support tray 17 when feeding a medium, and the second open state is the state of the support tray 17 when performing maintenance. The medium supported by the support tray 17 in the first open state is pushed up toward the feed roller 19 by a lifter 16 (see FIG. 6) that moves up and down by the power of a motor (not shown).

[0046] Next, the door portion 60 and the opening / closing body holding device 50 will be described. As shown in FIGS. 1 to 3, a door section 60 is provided on the side surface in the -X direction of the device body 2, that is, on the right side surface. Between the door section 60 and the apparatus main body 2, a part of the switchback path T2, a connecting path T3, and a part of the reversing path T4 are formed. The door section 60 also forms the connecting path T3 and a part of the reversing path T4 inside. By opening the door section 60 as shown in the change from Figure 2 to Figure 3, the inside of the apparatus main body 2 is exposed, and as a result, a part of the switchback path T2, a part of the connecting path T3, and a part of the reversing path T4 are opened. 1, the -X direction rollers of the transport roller pairs 36 and 37, the transport roller pairs 33 and 34, the feed roller 19, the separation roller 20, and the +Z direction roller of the transport roller pair 38. When the door portion 60 is opened, the nip between the transport roller pairs 36, 37, and 38 is released. By opening the door 60 as described above, if a jam occurs in the switchback path T2, the connection path T3, or the reversing path T4, the jammed medium can be removed.

[0047] 3, the door unit 60 is rotatably connected to the device body 2 by the hinge portion 46, and opens and closes with respect to the device body 2 by rotating. In this embodiment, the rotation axis of the door unit 60 is parallel to the Z-axis direction. In this embodiment, the door unit 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.

[0048] 4, the door section 60 is provided with a hook-shaped locking section 62, which is engaged with an interlocking section 45 provided on the device body 2, thereby locking the door section 60 in a closed state relative to the device body 2. The locking section 62 is provided rotatably about a rotation shaft 62a extending in the Z-axis direction, and the rotation of the rotation shaft 62a switches between a locked state shown in FIG. 4 and an unlocked state in which the door section 60 is separated from the interlocking section 45. Although a detailed configuration is not shown, the rotation shaft 62a can be rotated by operating an operating lever 63 (see FIG. 2) provided on the door section 60. Since the locking portion 62 is provided to keep the door portion 60 closed relative to the device body 2, the door portion 60 can be reliably kept closed.

[0049] The door section 60 is configured with a main body section 61 as a base, and various components attached to the main body section 61. A cover 65 is attached to the main body section 61, and the cover 65 forms the appearance of the door section 60, that is, the appearance of the right side of the printer 1. In this embodiment, the main body section 61 is formed from a metal plate material, and the cover 65 is formed from a resin material. The cover 65 is attached to the main body 61 by fastening a plurality of fixing screws to the main body 61. The fixing screw 66 shown in Fig. 6 is one of the plurality of fixing screws. The fixing screw 66 is an example of a fastening portion. Note that in this specification, a description of fixing screws other than the fixing screw 66 will be omitted. The fixing screws 66 are exposed as shown in Fig. 6 by opening the support tray 17. In other words, the support tray 17 is switchable between a closed state (Fig. 2) in which the fixing screws 66 fastened to the main body 61 are covered, and a first open state (Fig. 6) in which the fixing screws 66 fastened to the main body 61 are exposed.

[0050] 7, the surface of the main body 61 that faces the cover 65 is exposed. When the cover 65 is removed, it becomes possible to remove various sensors. The various sensors will be described below. As shown in FIG. 1, a first medium detector 80, which is an optical sensor for detecting the passage of a medium, is provided on the switchback path T2. Further, a second medium detector 85, which is an optical sensor for detecting the passage of a medium, is provided on the connection path T3. The first medium detector 80 is provided in a first detection unit 81 shown in Fig. 7. The first detection unit 81 is fixed to the main body 61 by two fixing screws 82, and the first detection unit 81 can be removed from the main body 61 by removing the fixing screws 82, which allows maintenance such as replacement of the first medium detector 80 to be performed. 7. The second detection unit 86 is fixed to the main body 61 by a fixing screw 87, and the second detection unit 86 can be removed from the main body 61 by removing the fixing screw 87. This allows maintenance such as replacement of the second medium detection unit 85 to be performed.

[0051] 1, an encoder 89 is provided near the first medium detection unit 80. The encoder 89 detects the rotation of a motor (not shown) which is the power source for the transport roller pairs 36, 37. The encoder 89 is provided in an encoder unit 90 shown in FIG. 7. The encoder unit 90 is fixed to the main body 61 by two fixing screws 91, and the encoder unit 90 can be removed from the main body 61 by removing the fixing screws 91, which allows maintenance such as replacing the encoder 89 to be performed.

[0052] 1, a position sensor 93 is provided near the second medium detection unit 85. The position sensor 93 detects the phase of a cam (not shown) for raising and lowering the lifter 16 (see FIGS. 6 and 9). The position sensor 93 is fixed to the main body 61 by one fixing screw 94 shown in FIG. 7, and the position sensor 93 can be removed from the main body 61 by removing the fixing screw 94, which allows maintenance such as replacement of the position sensor 93 to be performed. In FIG. 7, reference numeral 69 denotes a screw hole into which the above-mentioned fixing screw 66 fits.

[0053] Next, a description will be given of the opening / closing body holding device 50 capable of holding the support tray 17 in the second open state. The opening / closing body holding device 50 includes at least a main body portion 61, a cover 65, the support tray 17, and a holding member 75 described later. First, the first and second open states of the support tray 17 will be explained again. As explained with reference to Fig. 5, the support tray 17 is configured to be able to hold a first open state indicated by reference numeral 17-1 and a second open state indicated by reference numeral 17-2. The first open state is the state of the support tray 17 when feeding a medium, and the second open state is the state of the support tray 17 when performing maintenance. Here, the second open state is set to facilitate the workability when removing the fixing screws 66 shown in Fig. 6 with a screwdriver (not shown). It is also set to facilitate the workability when removing the cover 65 after removing the fixing screws 66. When the support tray 17 is in the first open state of Fig. 6, there is a risk that the screwdriver used to remove the fixing screws 66 will interfere with the support tray 17. In this case, by switching the support tray 17 from the first open state to the second open state of Fig. 9, it is possible to prevent the screwdriver used to remove the fixing screws 66 from interfering with the support tray 17, and the fixing screws 66 can be easily removed.

[0054] Here, a configuration for holding the support tray 17 in the first open state will be described. As shown in Fig. 6, a recess 65a for accommodating the support tray 17 is formed in the cover 65, and guide grooves 68 extending in the Z-axis direction are provided on both sides of the recess 65a in the Y-axis direction. Note that in Fig. 6, the guide groove 68 provided in the +Y direction is visible, and the guide groove 68 provided in the -Y direction is hidden. Arms 70 are rotatably provided on both sides of the support tray 17 in the Y-axis direction, and bosses 71 are provided at the ends of the arms 70 as shown in Fig. 9. The bosses 71 can enter the guide grooves 68 through enlarged portions 68a formed in the guide grooves 68, i.e., portions where the groove width is locally increased, and can come out of the guide grooves 68. When the boss 71 is inserted into the guide groove 68 as shown in FIG. 6, the boss 71 is guided in the Z-axis direction by the guide groove 68, and the boss 71 abuts against the lower end of the guide groove 68 as shown in FIG. 6, thereby maintaining the support tray 17 in the first open state.

[0055] Furthermore, when the boss 71 is removed from the guide groove 68 as shown in Fig. 9, the positional constraint of the support tray 17 by the arm 70 is released, and the support tray 17 can be opened further than the first open state. Here, if there is no holding means, the support tray 17 will attempt to rotate downward due to its own weight, and therefore, if the support tray 17 is particularly heavy, an excessive load will be applied to the structure around the rotation shaft 17c (see Fig. 5) of the support tray 17, which may cause damage. For this reason, in this embodiment, the support tray 17 is configured to be able to be held in the second open state by the holding member 75.

[0056] In this embodiment, the holding member 75 is formed of a wire-like member, and as one example, is formed of a metal wire-like member. Note that the wire-like member forming the holding member 75 in this embodiment has a rigidity sufficient to hold at least the shape shown in Fig. 14. However, the holding member 75 is not limited to a wire-like member, and may be formed of other metal materials or resin materials. In FIG. 14, reference symbol e1 denotes one end of the wire-like member that forms the holding member 75, and reference symbol e2 denotes the other end of the wire-like member that forms the holding member 75. The first engaging portion 75a is formed by bending the one end e1 side, and the second engaging portion 75b, the folded-back portion 75c, and the rounded portion 75d are formed by bending the other end e2 side.

[0057] When the support tray 17 is not held in the second open state, in this embodiment, the holding member 75 is removably provided on the free end side of the door portion 60, i.e., on the front side of the door portion 60 in the closed state, as shown in Figure 8. The main body 61 is formed with a first opening 61a and a second opening 61b as shown in Fig. 8 and Fig. 15. The cover 65 is provided with a protruding portion 65b that protrudes toward the main body 61 as shown in Fig. 15. A screw hole is formed in the protruding portion 65b, and a screw 77 can be fitted into the protruding portion 65b. A flange portion 77a is formed on the screw 77. The top of the protrusion 65b is exposed on the front side of the main body portion 61 through a first opening 61a formed in the main body portion 61, so that the flange portion 77a is exposed on the front side of the main body portion 61.

[0058] The second engagement portion 75b of the holding member 75 can enter between the flange portion 77a and the main body portion 61. In this state, other portions of the holding member 75, such as the folded portion 75c and the rounded portion 75d, can be in close contact with the main body portion 61. One end e1 side of the holding member 75 can enter inside through a second opening 61b formed in the main body 61, and the holding member 75 can be attached so that the one end e1 is not exposed to the outside when the holding member 75 is attached. By mounting the holding member 75 in this manner, it is possible to restrict movement of the cover 65 in the downward direction in FIG. 15, that is, movement of the cover 65 in the direction in which the cover 65 is removed.

[0059] 6 and 9, a feed roller cover 72 is provided near the feed roller 19, and a portion of the feed roller 19 is covered by the feed roller cover 72. The feed roller cover 72 is provided detachably by a snap fit structure (not shown). Further, the separation roller 20 is held by a separation roller holding portion 73. The separation roller holding portion 73 is provided so as to be freely attachable and detachable by a snap-fit ​​structure (not shown). FIG. 11 shows a state in which the feed roller cover 72, the feed roller 19, and the separation roller holding portion 73 have been removed.

[0060] 10, the feed roller 19 is provided on a rotating shaft 18, and a groove portion 18a is formed on the shaft end portion of the rotating shaft 18. An elastically deformable elastic piece 19c is integrally provided on the roller body 19a of the feed roller 19, and a hook portion 19d is integrally provided on the elastic piece 19c. The hook portion 19d can be fitted into the groove portion 18a of the rotating shaft 18, thereby restricting the axial position of the feed roller 19 so that it does not fall off the rotating shaft 18. The feed roller 19 can be removed from the rotating shaft 18 by deforming the elastic piece 19c.

[0061] 11 and 12, when the feed roller cover 72, the feed roller 19, and the separation roller holding portion 73 are removed, the second engagement portion 75b of the holding member 75 can be engaged with the groove portion 18a of the rotating shaft 18. Therefore, the width of the groove portion 18a is larger than the wire diameter of the wire-like member that forms the holding member 75. As shown in FIG. 13, an opening 17b is formed in the support tray 17, and the first engagement portion 75a of the holding member 75 can be hooked and engaged with the edge of the opening 17b. In this manner, the holding member 75 can hold the support tray 17 in the second open state.

[0062] As described above, the opening / closing body holding device 50 includes the main body 61 and the cover 65. The cover 65 is in an attached state in which it covers at least a part of the main body 61 by fastening the fixing screw 66, which is an example of a fastening part, to the main body 61, and can be removed from the main body 61 by removing the fixing screw 66. The opening / closing body holding device 50 also includes the support tray 17 that can be switched between a closed state in which the fixing screw 66 fastened to the main body 61 is covered and a first open state in which the fixing screw 66 fastened to the main body 61 is exposed, and a holding member 75 that can be attached to and detached from the main body 61, and the holding member 75 can hold the support tray 17 in a second open state in which the support tray 17 is further opened than the first open state. Therefore, by placing the support tray 17 in the second open state, maintenance work above the support tray 17 can be easily performed. And because the holding member 75 is detachable from the main body 61, there is no need to provide a mechanism for holding the support tray 17 in the second open state around the support tray 17, and it is possible to prevent the device from becoming larger. Moreover, because the holding member 75 can be disposed at an appropriate position on the main body 61, the holding member 75 can be disposed with a degree of freedom, and it is possible to prevent the main body 61 from becoming larger due to the provision of the holding member 75 on the main body 61.

[0063] The holding member 75 is a wire-like member having a first engaging portion 75a engageable with the support tray 17 on one end e1 side, and a second engaging portion 75b engageable with the main body portion 61 on the other end e2 side. This makes it possible to save space required for installing the holding member 75 in the main body portion 61, and prevents the main body portion 61 from becoming large.

[0064] Furthermore, when the cover 65 is in the attached state, the holding member 75 restricts the movement of the cover 65 in the direction of removing the cover 65. This provides the following advantageous effects. The cover 65 is attached to the main body 61 by the fixing screws 66, but there is a risk that the portions of the cover 65 that are not fastened by the fixing screws 66 may bend in a direction away from the main body 61. If the cover 65 is bent as described above, a gap will be created between the main body 61 and the cover 65, and dust and the like may enter the main body 61, causing a risk of impairing the function of the main body 61. However, when the cover 65 is in the attached state, the holding member 75 restricts movement of the cover 65 in the direction of removing the cover 65, thereby suppressing bending of the cover 65 and suppressing the intrusion of dust and the like into the main body 61. Since the holding member 57 suppresses bending of the cover 65 in this manner, the position for suppressing bending is preferably the center of the cover 65 in the Z-axis direction. Furthermore, since the holding member 75 not only holds the support tray 17 in the second open state, but also suppresses bending of the cover 65 as described above, the holding member 75 can be utilized effectively.

[0065] Furthermore, the cover 65 includes a protruding portion 65b protruding toward the main body portion 61 and a flange portion 77a located at the top of the protruding portion 65b, the main body portion 61 has a first opening portion 61a that exposes the top of the protruding portion 65b, and the second engaging portion 75b of the holding member 75 fits between the flange portion 77a and the main body portion 61, thereby causing the holding member 75 to restrict movement of the cover 65 in the removal direction of the cover 65. This makes it possible to easily realize a configuration in which the holding member 75 restricts movement of the cover 65 in the removal direction of the cover 65. In addition, in this embodiment, the second engagement portion 75b of the retaining member 75 is configured to fit between the flange portion 77a and the main body portion 61, but the first engagement portion 75a of the retaining member 75 may be configured to fit between the flange portion 77a and the main body portion 61.

[0066] Further, the main body 61 has a second opening 61b, and the first engagement portion 75a of the holding member 75 can enter into the second opening 61b. This provides the following advantageous effects. When the second engagement portion 75b of the holding member 75 is inserted between the flange portion 77a and the main body portion 61 and the first engagement portion 75a is free, the holding member 75 becomes prone to falling off. However, since the first engagement portion 75a of the holding member 75 can enter the second opening 61b, the holding member 75 is less likely to fall off the main body portion 61.

[0067] In addition, both ends of the wire member forming the holding member 75 are bent as shown in Fig. 14. This makes the holding member 75 easier to grip.

[0068] Door section 60, i.e., main body section 61, is provided so as to be openable and closable on the side surface of device body 2. Device body 2 includes first media cassette 3, which is a media storage section capable of storing media, and the side surface of device body 2 on which first media cassette 3 is provided corresponds to the front surface of device body 2, with door section 60, i.e., main body section 61, being provided on the right side surface of device body 2. The holding member 75 restricts movement of the cover 65 in the removal direction of the cover 65 on the device front side when the door portion 60, i.e., the main body portion 61, is closed. In a configuration in which the main body 61 is provided on the right or left side of the device main body 2, when the cover 65 bends in a direction away from the main body 61, the bending becomes easier to see from the user facing the device main body 2, and dust and other particles become more likely to enter through the gap between the main body 61 and the cover 65. However, as described above, the retaining member 75 restricts the movement of the cover 65 in the direction of removing the cover 65 on the front side of the device, thereby preventing the bending of the cover 65 from being easily visible to the user and also preventing dust and other particles from easily entering through the gap between the main body 61 and the cover 65. In this embodiment, the door portion 60, that is, the main body portion 61, is provided on the right side of the device main body 2, but it may be provided on the left side.

[0069] In addition, the opening / closing body holding device 50 is equipped with a feed roller 19 that feeds the medium from the support tray 17 and a rotating shaft 18 of the feed roller 19, and since the second engagement portion 75b is capable of engaging with the rotating shaft 18 of the feed roller 19, there is no need to provide a separate portion for engagement with the second engagement portion 75b, which prevents an increase in the cost of the device.

[0070] Further, a groove portion 18a is formed in the rotating shaft 18, a hook portion 19d engageable with the groove portion 18a is provided in the feed roller 19, and the second engagement portion 75b can engage with the groove portion 18a. In this manner, the hook portion 19d provided on the feed roller 19 engages with the groove portion 18a provided on the rotating shaft 18, so that the feed roller 19 can be positioned on the rotating shaft 18. And since the second engagement portion 75b of the holding member 75 can engage with the groove portion 18a, there is no need to separately form a portion with which the second engagement portion 75b engages, which can suppress an increase in the cost of the device and ensure that the second engagement portion 75b can engage with the rotating shaft 18.

[0071] Furthermore, in medium conveying device 100, a plurality of medium detection units for detecting the medium are provided on the medium conveying path, specifically, a first medium detection unit 80 and a second medium detection unit 85. By removing cover 65 from main body unit 61, the plurality of medium detection units can be accessed, facilitating maintenance of the plurality of medium detection units.

[0072] The present invention is not limited to the embodiments and modifications described above, but various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these modifications are also included in the scope of the present invention. For example, in the above embodiment, the opening / closing body held in the second open state by the holding member 75 is the support tray 17 for feeding a medium, but it may be another opening / closing body, such as a paper discharge tray. Further, in this embodiment, the second engagement portion 75b of the holding member 75 engages with the rotation shaft 18 of the feed roller 19, but it goes without saying that it may engage with other portions. In this embodiment, one holding member 75 is provided, but a plurality of holding members may be provided. [Explanation of symbols]

[0073] 1...inkjet printer, 2...device body, 3...first media cassette, 6...operation panel, 7...scanner unit, 8...ejection tray, 10A, 10B, 10C, 10D...ink storage section, 11A, 11B, 11C, 11D...mounting section, 12...waste liquid storage section, 13...conveyor belt, 14, 15...pulley, 16...lifter, 17...support tray, 17b...opening, 17c...rotating shaft, 1 8...rotating shaft, 18a...groove portion, 19...feed roller, 19a...roller body, 19c...elastic piece, 19d...hook portion, 20...separation roller, 21...pick roller, 25...feed roller pair, 28, 31, 32, 33, 34, 35, 36, 37, 38...transport roller pair, 41, 42...flap, 43...head unit, 44...line head, 45...engaged portion, 46...hinge portion, 50 ...opening / closing body holding device, 60...door portion, 61...main body portion, 61a...first opening, 61b...second opening, 62...lock portion, 62a...rotating shaft, 63...operating lever, 65...cover, 65a...recess, 65b...protruding portion, 66...fixing screw, 68...guide groove, 68a...expanded portion, 69...screw hole, 70...arm, 71...boss, 72...feed roller cover, 73...separation roller holding portion, 75...holding member, 7 5a...first engagement portion, 75b...second engagement portion, 75c...folded portion, 75d...rounded portion, 77...screw, 77a...flange portion, 80...first medium detection portion, 81...first detection unit, 82...fixing screw, 85...second medium detection portion, 86...second detection unit, 87...fixing screw, 89...encoder, 90...encoder unit, 91...fixing screw, 93...position sensor, 95...fixing screw, T1: Recording transport path, T2: Switchback path, T3: Connection path, T4: Reversal path

Claims

1. A main body portion, a cover that is in an attached state covering at least a part of the main body by fastening a fastening portion to the main body, and that is removable from the main body by removing the fastening portion; an opening / closing body that is switchable between a closed state that covers the fastening portion fastened to the main body portion and a first open state that exposes the fastening portion fastened to the main body portion; A holding member that is detachable from the main body portion, The holding member is capable of holding the opening / closing body in a second open state in which the opening / closing body is further opened than the first open state. An opening / closing body holding device characterized by the above.

2. The opening / closing body holding device according to claim 1, The holding member is a wire-like member having a first engaging portion at one end thereof that can be engaged with the opening / closing body, and a second engaging portion at the other end thereof that can be engaged with the main body. An opening / closing body holding device characterized by the above.

3. The opening / closing body holding device according to claim 2, The holding member restricts movement of the cover in a direction for removing the cover when the cover is in the attached state. An opening / closing body holding device characterized by the above.

4. The opening / closing body holding device according to claim 3, The cover is A protruding portion protruding toward the main body portion; a flange portion located at the top of the protruding portion; Equipped with The main body portion has a first opening that exposes the protrusion, The first engaging portion or the second engaging portion of the holding member is inserted between the flange portion and the main body portion exposed at the first opening, so that the holding member restricts movement of the cover in a removal direction of the cover. An opening / closing body holding device characterized by the above.

5. The opening / closing body holding device according to claim 4, The body portion has a second opening, When one of the first engaging portion and the second engaging portion of the holding member enters between the flange portion and the main body portion, the other of the first engaging portion and the second engaging portion can enter into the second opening. An opening / closing body holding device characterized by the above.

6. The opening / closing body holding device according to claim 2, The wire-shaped member forming the holding member has both ends bent. An opening / closing body holding device characterized by the above.

7. an apparatus body having a medium transport path for transporting a medium; The opening / closing body holding device according to any one of claims 2 to 6, Equipped with the main body is provided on a side surface of the device main body so as to be openable and closable, and forms a part of the medium transport path when closed, and opens a part of the medium transport path when opened; The opening and closing body is a support tray capable of supporting a medium to be fed. A medium transport device comprising:

8. an apparatus body having a medium transport path for transporting a medium; The opening / closing body holding device according to any one of claims 3 to 5, Equipped with The main body is provided on a side surface of the device main body so as to be openable and closable, the opening / closing body is a support tray capable of supporting a medium to be fed, the device body includes a medium storage section capable of storing a medium; The side surface of the device main body on which the medium storage unit is provided is defined as a front surface of the device main body, and the main body unit is provided on a right side surface or a left side surface of the device main body, the holding member restricts movement of the cover in a removal direction on the device front side of the cover when the main body is closed, A medium transport device comprising:

9. 8. The medium transport device according to claim 7, a feed roller for feeding the medium from the support tray; A rotation shaft of the feed roller; Equipped with The second engagement portion is capable of engaging with a rotation shaft of the feed roller. A medium transport device comprising:

10. 10. The medium transport device according to claim 9, A groove is formed in the rotation shaft of the feed roller, The feed roller is provided with a hook portion that can be engaged with the groove, The second engagement portion is engageable with the groove. A medium transport device comprising:

11. 8. The medium transport device according to claim 7, a plurality of medium detection units for detecting a medium are provided in the medium transport path; By removing the cover from the main body, the plurality of medium detection units can be accessed. A medium transport device comprising:

12. a recording unit for recording on a medium; The medium transport device according to claim 7 ; A recording device comprising:

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