Media conveying device and media conveying system

Abstract

To provide a medium transport device and a medium transport system capable of achieving both workability when a cover is opened and good opening / closing operation of the cover.SOLUTION: Of the Z-axis orthogonal to an installation surface F of a multifunction device 11, the multifunction device 11 side with respect to the installation surface F is +Z side, and an opposite side is -Z side, and two orthogonal axes in in-plane direction of the installation surface F are X axis and Y axis, respectively. The multifunction device 11 includes: a device main body 12 having a transport path for transporting a medium; and a cover CV provided on a side surface of the devices main body 12 and capable of switching between a first state in which the transport path is exposed and a second state in which the transport path is covered. The cover CV is divided into a first cover 21 that has a rotation axis along the Z axis and is rotatable with respect to the device main body 12, and a second cover 22 that is arranged on the -Z side of the first cover 21, has a rotation axis along the Y axis on the -Z side, and is rotatable with respect to the device main body 12.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a medium transport device and a medium transport system that transport a medium. [Background technology]

[0002] Patent Document 1 discloses a printer, which is an example of a media transport device that transports media. This printer includes a device body having a transport path along which media such as paper is transported. One or two covers that are detachable from the device body are provided on the rear surface of the device body. An intermediate roller is attached to the cover. When the cover is removed from the device body, the intermediate roller is pulled out from the device body and part of the transport path is exposed. Therefore, if a media jam occurs, the jammed media can be removed by removing the cover.

[0003] An expansion unit having a media storage section is also installed below the device main body. The expansion units are installed in one or three tiers. The protective wall (an example of a cover) on the back of the expansion unit rotates around its lower end as a fulcrum when the jam release lever is pulled. In other words, the protective wall, which is an example of a cover, has a vertical opening configuration that can be opened and closed around its lower end. The protective wall, which is an example of a cover, supports a driven roller that forms a pair with a feed roller that feeds media from the media storage section. When the protective wall, which is an example of a cover, is opened, the jammed media can be removed. When three tiers of expansion units are installed, the three protective walls, which are an example of covers, have a vertical opening configuration that opens and closes around their lower ends, arranged in three vertical rows. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-104197 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the media transport device described in Patent Document 1, the cover is detachably attached to the device body, so that the cover must be removed and attached each time a media jam occurs, making the jam removal work troublesome.In addition, Patent Document 1 has multiple vertically opening covers (protective walls) that can be opened and closed from the bottom end, but if the covers, whose pivot point is at the bottom end, are stacked one on top of the other in multiple stages, the pivot point is located between the covers, which creates an issue that the workability of the jam removal work in that area is poor. [Means for solving the problem]

[0006] A medium transport device that solves the above problem comprises a device main body having a transport path for transporting a medium, and a cover provided on a side of the device main body and switchable between a first state exposing the transport path and a second state covering the transport path, where the Z axis is perpendicular to the installation surface of the medium transport device, and the opposite side is the +Z side and the -Z side relative to the installation surface, and two perpendicular axes in the in-plane direction of the installation surface are the X axis and the Y axis, respectively, and the cover has a rotation axis along the Z axis and is divided into a first cover that is rotatable relative to the device main body, and a second cover that is arranged on the -Z side of the first cover, has a rotation axis along the Y axis on the -Z side, and is rotatable relative to the device main body.

[0007] A medium transport system that solves the above problem is a medium transport system comprising a medium transport device and a feeding device that feeds a medium to the medium transport device, wherein the medium transport device comprises an apparatus main body having a transport path for transporting a medium, the apparatus main body being provided on a side of the apparatus main body and capable of switching between a first state that exposes the transport path and a second state that covers the transport path, where the medium transport device side relative to the installation surface is defined as the +Z side and the opposite side as the -Z side of a Z axis that is perpendicular to an installation surface of the medium transport device, and two orthogonal axes in the in-plane direction of the installation surface are defined as the X axis and the Y axis, respectively; The cover is divided into a first cover having a rotation axis along the Z axis and rotatable relative to the device main body, and a second cover arranged on the -Z side of the first cover, having a rotation axis along the Y axis on the -Z side and rotatable relative to the device main body, the feeding device is aligned in the X axis direction with respect to the device main body of the medium transport device, is configured to store medium and be able to feed the stored medium to the transport path, the medium transport device is configured to be able to feed medium from the feeding device, and the lower end on the -Z side of the first cover is on the +Z side of the upper end on the +Z side of the feeding device. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a multifunction peripheral according to an embodiment. [Diagram 2] FIG. 2 is a schematic front view showing a printer unit of the multifunction peripheral. [Diagram 3] FIG. [Figure 4] FIG. 2 is a perspective view showing the printer unit with the first cover and second cover open. [Diagram 5] FIG. 1 is a front view showing a recording system including a multifunction peripheral and a large-capacity paper feeding unit. [Figure 6] FIG. 4 is a perspective view showing a part of the multifunction peripheral with the second cover open. [Figure 7] FIG. 4 is a schematic front cross-sectional view showing a connection state between the second cover and the large-capacity paper feeding unit. [Figure 8] FIG. 4 is a front view showing the recording system with the first cover open. [Figure 9]FIG. 4 is a front view showing the recording system with the second cover open. [Figure 10] FIG. 4 is a schematic cross-sectional plan view showing a portion of the medium container inserted into the device body. [Figure 11] FIG. 13 is a perspective view showing a printer unit of a comparative example with a first cover and a second cover open. [Figure 12] FIG. 11 is a partial side view showing a multifunction peripheral according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment will be described below with reference to the drawings. A multifunction machine as an example of a medium conveying device has multiple functions including, for example, an image reading function (scanning function) for reading an image of a document and outputting it as image data, a copy function for printing the image of the document read on a medium, and a print function for printing characters and images on a medium. The multifunction machine may also have a facsimile function.

[0010] In the drawings, the multifunction device 11 is placed on a horizontal installation surface F. Of the Z axis perpendicular to the installation surface F of the multifunction device 11, the side of the multifunction device 11 with respect to the installation surface F is the +Z side, and the opposite side is the -Z side, and the two orthogonal axes in the in-plane directions of the installation surface F are the X axis and the Y axis, respectively. In addition, the directions parallel to the X axis, the Y axis, and the Z axis are called the X axis direction, the Y axis direction, and the Z axis direction, respectively. The X axis direction includes both the +X direction and the -X direction. The Y axis direction includes both the +Y direction and the -Y direction. The Z axis direction includes both the +Z direction and the -Z direction. The Z axis direction, which is parallel to the Z axis, is also called the vertical direction Z. The X axis direction is the width direction when the multifunction device 11 is viewed from the front. The front of the multifunction device 11 is the side on which the operation panel 19, which is operated by the user to give instructions to the multifunction device 11, is located. For this reason, the direction parallel to the X axis is also called the width direction X. The Y axis is parallel to the direction in which a cassette (medium storage unit) (described later) is attached and detached. The Y axis is parallel to the depth direction of the multifunction device 11. For this reason, the Y axis direction is also referred to as the depth direction Y.

[0011] <About the configuration of the multifunction printer> As shown in FIG. 1, the multifunction device 11 includes a rectangular parallelepiped device main body 12, an image reading unit 13 disposed on the upper part of the device main body 12, and an automatic document feeder 14 disposed above the image reading unit 13. The device main body 12 also serves as a main part of a printer unit 15. The multifunction device 11 has a configuration in which the printer unit 15, the image reading unit 13, and the automatic document feeder 14 are stacked in this order from the bottom in the vertical direction Z. The device main body 12 has a transport path T (see FIG. 2) along which a medium M such as paper is transported. The multifunction device 11 is placed on an installation surface F with a plurality of casters 16 provided on the bottom of the device main body 12 in contact with the ground.

[0012] The image reading unit 13 is configured to be able to read images such as characters and photographs recorded on an original D. The automatic document feed unit 14 has an original tray 17 on which an original D (indicated by a two-dot chain line in FIG. 1) can be placed. The automatic document feed unit 14 feeds the original D placed on the original tray 17 toward the image reading unit 13. The original D after being read by the image reading unit 13 is discharged to an output tray 18. The automatic document feed unit 14 also serves as an original table cover for the image reading unit 13, and is provided so as to be able to be opened and closed relative to the image reading unit 13. When the automatic document feed unit 14 is opened, a document table (not shown) arranged on the upper surface of the image reading unit 13 is exposed. After a document is placed on the document table, the automatic document feed unit 14 is closed. The image reading unit 13 is able to read an original placed on the document table.

[0013] An operation panel 19 is provided on the top of the device body 12 and is operated to give instructions to the multifunction device 11. The operation panel 19 has a display unit 19A. The display unit 19A has a screen made of, for example, a touch panel. A touch panel is a display panel that allows instructions to be given to the multifunction device 11 by touching the screen. The operation panel 19 may have operation buttons, or may be configured only with operation buttons.

[0014] The multifunction device 11 includes a cassette 20 (medium storage section) on which a plurality of media M are placed. The cassette 20 stores a plurality of sheets of media M. The cassette 20 is, for example, a paper feed cassette capable of storing paper as an example of the media M. The multifunction device 11 of this embodiment has a total of four cassettes 20. The four cassettes 20 are arranged in four tiers at the bottom of the device body 12, stacked in the vertical direction Z. The plurality of cassettes 20 are detachably inserted into the device body 12. The cassette 20 is configured to be capable of being pulled out in the Y-axis direction relative to the device body 12. The plurality of cassettes 20 store, for example, media M of different sizes or paper types.

[0015] As shown in Fig. 1, each cassette 20 has a cassette cover 20K facing the Y-axis direction. This cassette cover 20K is an example of a fourth cover that can be opened and closed with respect to the device body 12, and is provided on a side surface 12F facing the Y-axis direction of the device body 12. The direction in which the side surface 12F on which the cassette cover 20K is provided faces is the same as the direction in which the operation panel 19 of the multifunction device 11 faces. The cassette cover 20K is provided on a cassette 20 that can be pulled out in the Y-axis direction. In addition, the cassette cover 20K is provided with a handle 20E that a user uses to pull out the cassette 20.

[0016] The number of tiers of cassettes 20 can be set arbitrarily. The number of tiers of cassettes 20 is not limited to four, but may be two, three, five, or six. Also, the cassettes 20 with multiple tiers may be configured with an expansion unit that is an optional addition. For example, the multifunction device 11 may be configured with two tiers of cassettes 20 as standard, and an expansion unit with two tiers of cassettes 20 may be added as an option by the user. Also, the expansion unit may be configured to allow the cassettes 20 to be added one tier at a time.

[0017] 1 and 2, a cover CV is provided on a side surface 12S of the device body 12. The cover CV is switchable between a first state in which the transport path T (see FIG. 2) is exposed and a second state in which the transport path T is covered. The cover CV is divided into a first cover 21 and a second cover 22.

[0018] That is, a first cover 21 and a second cover 22 located below the first cover 21 are provided on the side surface 12S in a state in which they can be opened and closed relative to the device body 12. Furthermore, a third cover 23 is provided on the side surface 12S in a position below the second cover 22 in a state in which they can be opened and closed relative to the device body 12.

[0019] The first cover 21 is larger than the second cover 22. That is, the first cover 21 occupies a larger area (occupied area) of the side surface 12S than the second cover 22. The first cover 21 has a handle 21A that the user operates to open and close. The first cover 21 also has a feed tray 24 as an example of a tray on which the medium M is placed. The feed tray 24 is attached to the first cover 21 in a state in which it can be opened and closed. The feed tray 24 has a handle 24A.

[0020] The second cover 22 and the third cover 23 are approximately the same size and shape. The second cover 22 has a handle 22A that the user can use to open and close the cover. The third cover 23 has a handle 23A that the user can use to open and close the cover. The second cover 22 and the third cover 23 have the handles 22A, 23A at approximately the same positions on the cover surfaces (upper left position in FIG. 1). In this embodiment, most of the area of ​​the side surface 12S can be opened and closed by the first cover 21, the second cover 22, and the third cover 23.

[0021] As shown in Fig. 1, an openable front cover 25 is provided in the upper right area of ​​the cassette 20 on the front side of the device body 12. The front cover 25 can be opened and closed by pivoting on the right end. At least one of the size and shape of the second cover 22 and the third cover 23 may be different. In Fig. 1, the third cover 23 may be eliminated, and the second cover 22 may be configured as a single cover having a size equal to the combined size of the second cover 22 and the third cover 23 shown in Fig. 1.

[0022] As shown in FIG. 1, the device body 12 has a recording unit 30 that records on a medium M (see FIG. 2). The recording unit 30 records on the medium M fed from the cassette 20 and the medium M fed from the feed tray 24. A liquid supply source 35 (see FIG. 2) that contains ink as an example of a liquid is housed inside the device body 12. The recording unit 30 records on the medium M using a liquid such as ink supplied from the liquid supply source 35. As shown in FIG. 1, a window portion 26 is provided on the front of the device body 12 in an area corresponding to the liquid supply source 35. A user can visually check the remaining amount of the liquid supply source 35 through the window portion 26.

[0023] Between the device body 12 and the image reading unit 13, a concave discharge unit 31 is provided. The discharge unit 31 includes a discharge tray 32 that constitutes its bottom. The discharge tray 32 is a plate-shaped member, and the discharged medium M is loaded on the upper surface of the discharge tray 32. The discharge tray 32 is inclined at a predetermined angle so that the downstream side in the discharge direction in which the recorded medium M is discharged is higher than the upstream side. The device body 12 has a discharge port (not shown) that opens in one side wall (right side wall) that forms the concave portion of the discharge unit 31. The recorded medium M is discharged from the discharge port and loaded on the discharge tray 32 of the discharge unit 31. The discharge tray 32 is formed in an inclined shape such that the downstream side in the discharge direction of the medium M is higher than the upstream side. The medium M discharged onto the discharge tray 32 falls along the slope due to its own weight and hits a regulating wall (not shown), so that the upstream ends in the discharge direction are aligned.

[0024] <Printer section configuration> Next, the configuration of the printer unit 15 will be described with reference to FIG. The device body 12 includes a transport unit 40 that transports the medium M along the transport path T. The device body 12 also includes a medium width sensor 33 that detects the medium M transported along the transport path T, a recording unit 30 that records on the medium M, a liquid supply source 35 that supplies liquid such as ink to the recording unit 30, a waste liquid storage unit 36 ​​that stores waste liquid such as ink, and a control unit 37 that controls the operation of each unit of the multifunction device 11. The recording unit 30 includes a liquid ejection head 30A that ejects liquid such as ink onto the medium M. The liquid ejection head 30A ejects liquid such as ink supplied from the liquid supply source 35 through a tube (not shown) from a nozzle (not shown). The liquid supply source 35 may be a liquid cartridge such as an ink cartridge, or a liquid tank such as an ink tank.

[0025] In the example shown in FIG. 2, the liquid ejection head 30A is disposed in a position inclined with respect to the horizontal. That is, the liquid ejection head 30A is disposed in a position in which the nozzle surface on which the nozzles for ejecting liquid are open is inclined with respect to the horizontal. The liquid ejection head 30A faces the conveyor belt 48. The liquid ejection head 30A ejects liquid onto the medium M conveyed on the conveyor belt 48 along the conveying direction A. The angle at which the liquid ejection head 30A is inclined with respect to the horizontal can be changed as appropriate. For example, the liquid ejection head 30A and the conveyor belt 48 may be disposed horizontally (tilt angle 0°). The recording unit 30 may be configured to include a recording head other than the liquid ejection head 30A that ejects liquid. The other recording head may be a dot impact recording head, a thermal recording head, or a laser recording head that records with toner.

[0026] The transport section 40 includes a plurality of rollers and the like arranged along the transport path T. That is, the transport section 40 includes a feed roller 41 and a separation roller pair 42 for the cassette 20, a feed roller 43 and a separation roller 44 for the feed tray 24, transport roller pairs 45-47, 54-56 of the transport system, discharge roller pairs 49, 51, 53, transport rollers 61-64, and a carry-in roller 65. The transport path T includes first to sixth transport paths T1-T6 which are transport paths of the feed system, and seventh to ninth transport paths T7-T9 and reversal paths T10, T11 which are transport paths of the transport system.

[0027] In detail, a feed roller 41 and a separation roller pair 42 are provided for each of the cassettes 20 near the downstream end in the feeding direction of the cassettes 20 inserted in the device body 12. The downstream portion of the media M stored in the cassette 20 is placed on a placement plate 20F that is biased toward the +Z side (upward). The placement plate 20F is provided rotatably with respect to the cassette 20 inserted in the device body 12, and biases the media M toward the +Z side in a state in which the media M is lifted upward toward the downstream side in the feeding direction. The topmost medium M among the media M placed on the placement plate 20F is pressed against the feed roller 41. In this state, the feed roller 41 rotates, and the topmost medium M is sent in the feeding direction. Of the sent-out media M, only one is separated by the separating action of the separation roller pair 42 that rotates while being nipped by the separation roller pair 42, and sent downstream. The medium M fed from each cassette 20 is transported along the transport paths T1 to T4 to the +Z side and reaches the transport path T7. The medium M fed from the cassette 20 is transported toward the downstream transport path T7 by the transport rollers 61 to 64 provided along the transport paths T1 to T4.

[0028] 2, the feed tray 24 includes an edge guide 24B for positioning the medium M placed thereon in the width direction. The first cover 21 includes a feed roller 43 that feeds the medium M placed on the feed tray 24 to the transport path T. The first cover 21 also includes a separation roller 44 that rotates in contact with the feed roller 43. The transport path T5 along which the medium M is transported from the feed tray 24 by the feed roller 43 and the separation roller 44 merges with the transport path T7.

[0029] There is also a transport path T6 for carrying the medium M through an inlet 66 of the second cover 22. The transport path T6 is a transport route used when the medium M is carried into the multifunction device 11 from an external device. The second cover 22 is provided with carry-in rollers 65 for carrying the medium M through the inlet 66 along the transport path T6. The transport rollers 61 also serve as transport rollers for transporting the medium M along the transport path T6. The medium M carried in from the transport path T6 merges with the transport path T7 downstream.

[0030] As shown in FIG. 2, the transport path T7 is curved in the area facing the medium width sensor 33 and extends obliquely upward from the medium width sensor 33. The medium M is transported along the transport path T7 to a recording position RP facing the liquid ejection head 30A by the rotation of the transport roller pairs 45, 46, and 47. At the recording position RP, the medium M is transported on a transport belt 48 arranged at a position facing the liquid ejection head 30A. The liquid ejection head 30A records on the medium M transported on the transport belt 48. The liquid ejection head 30A is, for example, an inkjet recording method that ejects liquid such as ink. At the recording position, the medium M is transported in the A direction. After recording, the medium M is transported downstream by the discharge roller pair 49. A flap 50 is provided at a downstream position of the discharge roller pair 49. The flap 50 distributes the medium M to the transport path T8 and the reversal path T10.

[0031] During single-sided recording, in which recording is performed on only one side of the medium M, the medium M after recording on the first side is diverted to the transport path T8 by the flap 50. The medium M diverted to the transport path T8 is transported downstream by the discharge roller pair 51. On the other hand, during double-sided recording, in which recording is performed on both sides of the medium M, the medium M after recording on the first side is diverted from the transport path T7 to the reversal path T10 by the flap 50 after recording on one side is completed.

[0032] In addition, a flap 52 is provided midway along the transport path T8. The flap 50 distributes the medium M to the transport paths T8 and T9. The medium M transported along the transport path T8 is discharged onto the discharge tray 32 of the discharge section 31. In addition, the medium M distributed to the transport path T9 is discharged to the discharge section 31 by a pair of discharge rollers 53 provided along the transport path T9, and is discharged to a discharge tray (not shown) provided in the discharge section 31.

[0033] The medium M that has been sent to the reversing path T10 and has completed one-sided recording is switched back on the reversing path T10, and then conveyed in reverse along the reversing path T10 to the -Z side. Then, the medium M is conveyed from the reversing path T10 to the -Z side through the reversing path T11. After being conveyed along the reversing path T11 by a pair of conveying rollers 55, 56 provided along the reversing path T11, the medium M merges with the conveying path T7. That is, the medium M that has been switched back and passed through the reversing paths T10 and T11 is re-fed to the conveying path T7 with its front and back orientation reversed. At this time, the re-fed medium M is conveyed along the conveying path T7 with its second side, which is the side opposite to the first side on which recording has been performed, facing the liquid ejection head 30A. The liquid ejection head 30A records on the second side of the re-fed medium M. The medium M that has completed double-sided recording by recording on the second side is discharged from the conveying path T8 or the conveying path T9 to the discharge section 31. In this embodiment, the transport path T has reversing paths T10 and T11 as an example of a switchback path.

[0034] The first cover 21 is disposed at a position corresponding to the reversing paths T10 and T11. In this embodiment, the first cover 21 forms the reversing paths T10 and T11, which are an example of a switchback path. The conveying roller pair 45 provided along the conveying path T7 is composed of a pair of a driving roller 45A and a driven roller 45B. The conveying roller pair 46 is composed of a pair of a driving roller 46A and a driven roller 46B. Furthermore, the conveying roller pair 54 provided along the reversing path T10 is composed of a pair of a driving roller 54A and a driven roller 54B. A conveying mechanism 70 that forms the reversing paths T10 and T11 is assembled on the back surface of the first cover 21. That is, when the first cover 21 is opened, the conveying mechanism 70 is separated from the device body 12.

[0035] In addition, the first cover 21 is heavier than the second cover 22. This is because the first cover 21 has a larger area than the second cover 22 and is provided with the transport mechanism 70 that forms the reversing paths T10, T11 over the entire back surface of the first cover 21. The amount of protrusion of the transport mechanism 70 in the first cover 21 toward the +X side is larger than the amount of protrusion of the third guide portion 73 (see FIG. 4) provided on the back surface of the second cover 22 toward the +X side. For this reason, the weight of the first cover 21 and the transport mechanism 70 is quite heavy. Furthermore, the first cover 21 is provided with the feed tray 24, and is provided with the feed roller 43 that feeds the medium M from the feed tray 24, etc. These weights are also factors that make the first cover 21 heavier than the second cover 22.

[0036] As shown in Fig. 2, the second cover 22 is located at a position where its position in the Z axis direction overlaps with the position of the cassette 20 in the Z axis direction. The first cover 21 is located at a position where its position in the Z axis direction does not overlap with the position of the cassette 20 in the Z axis direction, and covers a transport path downstream of the transport path covered by the second cover 22. The transport paths covered by the second cover 22 are the first transport path T1 and the second transport path T2, as shown in Fig. 2. The transport paths covered by the first cover 21 are the seventh transport path T7 and the reversing paths T10 and T11, as shown in Fig. 2.

[0037] The control unit 37 includes a central processing unit (CPU), read only memory (ROM), random access memory (RAM), and storage (not shown). The control unit 37 controls the transport of the medium M in the printer unit 15 and the recording operation on the medium M by the liquid ejection head 30A. In detail, the control unit 37 is not limited to a unit that performs software processing for all the processes it executes. For example, the control unit 37 may be equipped with a dedicated hardware circuit (e.g., an application specific integrated circuit: ASIC) that performs hardware processing for at least a part of the processes it executes. That is, the control unit 37 may be configured as a circuit including one or more processors that operate according to a computer program (software), one or more dedicated hardware circuits that execute at least a part of the various processes, or a combination thereof. The processor includes a CPU and memory such as a RAM and a ROM, and the memory stores program code or instructions configured to cause the CPU to execute the processes. The memory, i.e., computer-readable medium, includes any available medium that can be accessed by a general-purpose or dedicated computer.

[0038] The printer unit 15 is provided with a number of sensors (detection units) (not shown) that can detect the presence or absence of the medium M on the transport path T. The control unit 37 determines whether the medium M is in an appropriate position on the transport path T when a recording operation is being performed to record on the medium M. When it is detected that the medium M is in an inappropriate position on the transport path T, it determines that a jam has occurred due to the medium M being stuck. The control unit 37 identifies the location of the jam based on detection signals from the multiple sensors, and displays a message on the display unit 19A to the effect that a jam has occurred. The message includes information about the cover that should be opened to perform the jam removal work. The user opens the cover indicated in the message and performs the jam removal work.

[0039] <Cover composition> 3 shows the side 12S on which the cover CV of the printer unit 15 is provided. The device body 12 is provided with a first opening 121 in an area facing the first cover 21. The first cover 21 closes the first opening 121 and opens the first opening 121 in the open state. The device body 12 is provided with a second opening 122 in an area facing the second cover 22. The second cover 22 closes the second opening 122 in the closed state and opens the second opening 122 in the open state. The device body 12 is provided with a third opening 123 in an area facing the third cover 23. The third cover 23 closes the third opening 123 in the closed state and opens the third opening 123 in the open state.

[0040] As shown in FIG. 3, the first cover 21 has a rotation shaft 22B along the Z axis and is provided rotatably with respect to the device body 12. The second cover 22 is disposed on the -Z side of the first cover 21, has a rotation shaft 22B along the Y axis on the -Z side, and is provided rotatably with respect to the device body 12. Since the cover CV is divided into the first cover 21 and the second cover 22, the conveying path T between the first cover 21 and the second cover 22 can be continuously opened by opening the first cover 21 and the second cover 22. Note that being continuously opened means, for example, that in the closed state, no non-door portion such as a frame such as a batten or an exterior is arranged between the first cover 21 and the second cover 22. In other words, in the open state, no non-door portion consisting of a frame such as a batten or an exterior that divides the first opening 121 corresponding to the first cover 21 and the second opening 122 corresponding to the second cover 22 is arranged. Therefore, when both first cover 21 and second cover 22 are opened, first opening 121 and second opening 122 form one continuous large opening.

[0041] In addition, when the third cover 23 is eliminated and the second cover 22 is sized to cover the first to fourth transport paths T1 to T4, the area that the second cover 22 occupies on the side surface 12S may be smaller than that of the first cover 21. However, the areas that the first cover 21 and the second cover 22 occupy on the side surface 12S may be the same, or the area that the second cover 22 occupies on the side surface 12S may be larger than that of the first cover 21.

[0042] As shown in FIG. 3, a dimension LY1 of the first cover 21 in the Y-axis direction may be larger than a dimension LZ2 of the second cover 22 in the Z-axis direction (LY1>LZ2). The dimension LY1 of the first cover 21 in the Y-axis direction may be smaller than the dimension LZ1 of the first cover 21 in the Z-axis direction (LY1 <LZ1)。

[0043] The dimension LY2 of the second cover 22 in the Y-axis direction may be larger than the dimension LZ2 of the second cover 22 in the Z-axis direction (LY2>LZ2). The dimension LZ2 of the second cover 22 in the Z-axis direction may be smaller than the dimension LZ1 of the first cover 21 in the Z-axis direction (LZ2 <LZ1)。

[0044] A dimension LY1 of the first cover 21 in the Y-axis direction may be equal to a dimension LY2 of the second cover 22 in the Y-axis direction (LY1=LY2). In addition, a side edge 21S of the first cover 21 extending in the Z-axis direction and a side edge 22S of the second cover 22 extending in the Z-axis direction may be on a straight line in the Z-axis direction.

[0045] The third cover 23 is disposed on the -Z side of the cover CV and has a rotation axis 23B along the Y axis orthogonal to the Z axis on the -Z side. The third cover 23 may be configured to be rotatable about the rotation axis 23B with respect to the apparatus main body 12. The dimension LY3 of the third cover 23 in the Y-axis direction may be larger than the dimension LZ3 of the third cover 23 in the Z-axis direction (LY3 > LZ3). The dimension LY3 of the third cover 23 in the Y-axis direction may be equal to the dimension LY2 of the second cover 22 in the Y-axis direction (LY2 = LY3). Also, the side edge 23S extending in the Z-axis direction of the third cover 23 and the side edge 22S extending in the Z-axis direction of the second cover 22 may be on a straight line in the Z-axis direction. Further, the three side edges 21S, 22S, and 23S may be on a straight line in the Z-axis direction.

[0046] Also, as shown in FIG. 3, the dimensions LZ2 and LZ3 of the second cover 22 and the third cover 23 in the Z-axis direction may be smaller than half (1 / 2) of the dimension LZ1 of the first cover 21 in the Z-axis direction (LZ2 < LZ1 / 2, LZ3 < LZ1 / 2).

[0047] As shown in FIG. 3, the dimension LZ4 of the cassette 20 in the Z-axis direction may be smaller than the dimensions LZ2 and LZ3 of the second cover 22 and the third cover 23 in the Z-axis direction (LZ4 < LZ2, LZ4 < LZ3).

[0048] The feed tray 24 has a rotation axis 24C along the Y axis and is configured to be rotatable with respect to the first cover 21. As shown in FIG. 3, the dimension LY5 of the feed tray 24 in the Y-axis direction may be smaller than the dimensions LY2 and LY3 of the second cover 22 and the third cover 23 in the Y-axis direction (LY5 < LY2, LY5 < LY3). Also, the dimension LZ5 of the feed tray 24 in the Z-axis direction may be larger than the dimensions LZ2 and LZ3 of the second cover 22 and the third cover 23 in the Z-axis direction (LZ5 > LZ2, LZ5 > LZ3).

[0049] FIG. 4 shows a state in which the first cover 21, the second cover 22, and the third cover 23 are open. Note that some rollers are omitted in FIG. 4. As shown in FIG. 4, a transport mechanism 70 is assembled to the back surface of the first cover 21. More specifically, as shown in FIG. 4, a transport mechanism 70 is assembled to the back surface of the first cover 21. The transport mechanism 70 includes a first guide member 71 that guides the medium M, and the above-mentioned multiple driven rollers 46B, 54B and multiple transport roller pairs 55, 56 that are assembled to the first guide member 71 and are omitted in FIG. 4. The first guide member 71 has a guide surface 71A that forms a part of the reversing path T10 and a guide surface 71B that forms a part of the transport path T7. In addition, a second guide member 72 that faces the first cover 21 is assembled to the device body 12. When the first cover 21 is closed, the reversing paths T10, T11 are formed between the first guide member 71 and the second guide member 72. Further, driven rollers 45B, 46B, 54B (see FIG. 2) which are paired with the driving rollers 45A, 46A, 54A on the first cover 21 side are assembled to the second guide member 72 on the apparatus body 12 side.

[0050] When the first cover 21 is closed, a transport path T7 and reversing paths T10, T11 (see FIG. 2) are formed between the first guide member 71 and the second guide member 72. Furthermore, the driving rollers 45A, 46A, 54A and the driven rollers 45B, 46B, 54B are arranged in positions where they can nip the medium M, for example, to form the transport roller pairs 45, 46, 54. As shown in FIG. 4, when the first cover 21 is opened, the first guide member 71 and the second guide member 72 are separated, and the driving rollers 45A, 46A, 54A and the driven rollers 45B, 46B, 54B (all see FIG. 2) constituting the transport roller pairs 45, 46, 54 are separated. Therefore, as shown in FIG. 4, when the first cover 21 is opened, the inside of the device main body 12 is exposed through the first opening 121. That is, the second guide member 72 on the device main body 12 side is exposed through the first opening 121. Therefore, if a jam of the medium M occurs in the reversing paths T10, T11, by opening the first cover 21, the jam can be cleared by using the exposed first guide member 71 and second guide member 72.

[0051] As shown in FIG. 4, the second cover 22 and the third cover 23 are connected to the device body 12 via a support link 77 so as to be openable and closable. The maximum opening degree of the second cover 22 and the third cover 23 is restricted by the support link 77. In this example, the maximum opening degrees of the second cover 22 and the third cover 23 are the same. The maximum opening degrees of the second cover 22 and the third cover 23 are within a range of 0 to 30 degrees from the horizontal (for example, about 10 degrees). The second cover 22 and the third cover 23 can be inclined at an opening degree up to the maximum opening degree.

[0052] The second cover 22 also includes a first transport roller 61 on the back surface thereof for transporting the medium M fed from the first cassette 20A, and a second transport roller 62 on the back surface thereof for transporting the medium M fed from the second cassette 20B. The first transport roller 61 transports the medium M along the first transport path T1 (see FIG. 2), and the second transport roller 62 transports the medium M along the second transport path T2 (see FIG. 2). The back surface of the second cover 22 is a third guide section 73, from which the first transport roller 61 and the second transport roller 62 are partially exposed. The transport rollers 61 and 62 are each arranged in a row in the depth direction Y (medium width direction) to form a roller row. The second cover 22 includes an entrance 66 through which the medium M transported from the large-capacity feed unit 80 (see FIG. 5), which will be described later, passes. The second cover 22 includes an entrance roller 65 for transporting the medium M supplied from the entrance 66. 4, when the second cover 22 is opened, the third guide portion 73 on the rear surface thereof and the fourth guide portion 74 on the device body 12 side are exposed through the second opening 122 of the device body 12. Therefore, if a jam occurs in which the medium M is clogged in the transport paths T1, T2, by opening the second cover 22, the jam can be cleared by using the exposed third guide portion 73 and fourth guide portion 74.

[0053] The third cover 23 also includes a third transport roller 63 on its back surface for transporting the medium M fed from the third cassette 20C, and a fourth transport roller 64 on its back surface for transporting the medium M fed from the fourth cassette 20D. The third transport roller 63 transports the medium M along the third transport path T3 (see FIG. 2), and the fourth transport roller 64 transports the medium M along the fourth transport path T4 (see FIG. 2). The back surface of the third cover 23 is a fifth guide section 75, from which the third transport roller 63 and the fourth transport roller 64 are partially exposed. The transport rollers 63 and 64 are each arranged in a row in the depth direction Y (medium width direction), forming a roller row. When the third cover 23 is opened, the fifth guide section 75 on its back surface and the sixth guide section 76 on the device body 12 side are exposed through the third opening 123 of the device body 12. Therefore, if a jam of the medium M occurs in the transport paths T3, T4, by opening the third cover 23, the fifth guide portion 75 and the sixth guide portion 76 that are exposed can be cleared.

[0054] When both the first cover 21 and the second cover 22 are opened, the first opening 121 and the second opening 122 are continuously opened. In other words, there is no frame or exterior such as a crosspiece between the first opening 121 and the second opening 122. Therefore, if a jam occurs across the transport paths T1, T2 and the reversing paths T10, T11, when both the first cover 21 and the second cover 22 are opened, the first opening 121 and the second opening 122 are continuously opened, making it easier to remove the jam.

[0055] <Recording system configuration> FIG. 5 shows a recording system 10. As shown in FIG. 5, the recording system 10 as an example of a media transport system includes a multifunction device 11 and a large-capacity paper feed unit 80 that supplies a medium M to the multifunction device 11. The large-capacity paper feed unit 80 is coupled to the multifunction device 11 for use. In this example, the large-capacity paper feed unit 80 is coupled to the multifunction device 11 at the second cover 22. The large-capacity paper feed unit 80 is arranged in line with the device body 12 in the X-axis direction. The large-capacity paper feed unit 80 stores a plurality of media M. The maximum number of sheets of media that can be stored in the large-capacity paper feed unit 80 is greater than the maximum number of sheets of media that can be stored in each cassette 20. The large-capacity paper feed unit 80 feeds the stored media M to a transport path T of the multifunction device 11. The device body 12 of the multifunction device 11 is configured to be able to feed the media M from the large-capacity paper feed unit 80 to the transport path T.

[0056] As shown in FIG. 5, the large-capacity paper feed unit 80 includes a housing 81, a large-capacity cassette 82 that is detachable from the housing 81, and casters 83 that are grounded on the installation surface F. The large-capacity cassette 82 has a handle 82A on its surface (front) facing the Y-axis direction that is operated by the user when pulling it out. As shown in FIG. 5, the dimension LZ6 in the Z-axis direction of the large-capacity cassette 82 is larger than the dimension LZ4 in the Z-axis direction of the cassette 20 on the multifunction device 11 side (see FIG. 3). Therefore, the number of sheets that can be loaded in the large-capacity cassette 82 is greater than the number of sheets that can be loaded in the cassette 20. The large-capacity cassette 82 of this embodiment has a height dimension that is approximately four stages of the cassette 20.

[0057] 5, the height dimension H1 of the large-capacity paper feed unit 80 from the installation surface F is slightly higher than the height of the upper end of the first cassette 20A in the uppermost stage in the multifunction device 11 having four stages of cassettes 20. The height dimension H1 of the large-capacity paper feed unit 80 is set to a dimension that does not interfere with the feed tray 24 when the feed tray 24 of the multifunction device 11 is opened.

[0058] As shown in FIG. 6 and FIG. 7, the second cover 22 has an inlet 66 through which the medium M transported from the large-capacity feeding unit 80 passes. The inlet 66 opens between the first transport roller 61 and the second transport roller 62. The second cover 22 may have an inlet roller 65 for transporting the medium M from the inlet 66. The inlet roller 65 transports the medium M on the way from the inlet 66 to the first transport roller 61. That is, in this example, the first transport roller 61 also has a transport function for transporting the medium M transported from the large-capacity feeding unit 80 through the inlet 66. The medium M transported from the large-capacity feeding unit 80 into the multifunction device 11 through the inlet 66 is transported along the transport path T6 in the device body 12 and merges with the transport path T7. Note that the inlet roller 65 may not be provided, and the medium M may be guided from the inlet 66 to the first transport roller 61 by a rib provided on the way of the path.

[0059] In this way, the large-capacity paper feeding unit 80 shown in FIG. 7 supplies paper to the device body 12 of the multifunction device 11 through the entrance 66 opening in the second cover 22, so that the Z-axis position of the large-capacity paper feeding unit 80 overlaps with the Z-axis position of the second cover in the Z-axis direction.

[0060] 7, a feed roller 84 and a pair of separation rollers 85 are provided at an upper position within a housing 81 of the large-capacity paper feed unit 80. A feed guide 86 extends horizontally from one side of the housing 81 at a position corresponding to the pair of separation rollers 85. The large-capacity paper feed unit 80 is coupled to the multifunction device 11 with the tip of the feed guide 86 inserted into the entrance 66 opening in the second cover 22 of the multifunction device 11.

[0061] A large-capacity cassette 82 in a housing 81 of the large-capacity paper feed unit 80 accommodates a plurality of media M in a stacked state. The plurality of media M accommodated in the large-capacity cassette 82 are biased toward the +Z side of the vertical direction Z by a spring (not shown). As a result, the plurality of media M are pressed against the feed roller 84. When the feed roller 84 rotates, the topmost one of the plurality of media M is fed. At this time, only one medium M is separated by the separation roller pair 85. As a result, double feeding of the media M is suppressed. In this way, the media M are supplied one by one from the feed guide 86 of the large-capacity paper feed unit 80 to the multifunction device 11.

[0062] As shown in Fig. 7, the lower end on the -Z side of first cover 21 of multifunction device 11 is located on the +Z side of the upper end on the +Z side of large-capacity paper feed unit 80. In other words, the upper end surface of large-capacity paper feed unit 80 is located lower than the lower end of first cover 21. For this reason, as shown in Fig. 8, even if first cover 21 is opened, first cover 21 does not collide with large-capacity paper feed unit 80. Therefore, when performing jam removal work with only first cover 21 open, there is no need to move large-capacity paper feed unit 80.

[0063] In addition, the first cover 21 can be opened and closed around a rotation shaft 21B (see FIG. 3) that is aligned with the Z axis at the rear end side, and the first cover 21 moves to the rear side when opened. This allows the user to remove jams from the front side of the multifunction device 11 without the first cover 21 getting in the way.

[0064] As shown in FIG. 7, the position of the large-capacity feeding unit 80 in the Z-axis direction overlaps with the position of the second cover 22 in the Z-axis direction. Therefore, when opening the second cover 22, it is necessary to move the large-capacity feeding unit 80 in the X-axis direction from the device body 12. The distance by which the large-capacity feeding unit 80 is moved in the X-axis direction depends on the dimension LZ1 of the second cover 22 in the Z-axis direction. To reduce this distance, the dimension LY1 of the first cover 21 in the Y-axis direction may be larger than the dimension LZ1 of the second cover 22 in the Z-axis direction. In other words, the height dimension LZ1 of the second cover 22 may be smaller than the width dimension LY1 of the first cover 21.

[0065] When opening at least one of the second cover 22 and the third cover 23, as shown in FIG. 9, the high-capacity paper feed unit 80 is moved a predetermined distance in the X-axis direction to separate it from the multifunction machine 11. The predetermined distance is the distance necessary for opening at least one of the second cover 22 and the third cover 23. The dimensions LZ2 and LZ3 of the second cover 22 and the third cover 23 in the Z-axis direction may be smaller than the respective dimensions LY2 and LY3 in the Y-axis direction. Also, the dimensions LZ2 and LZ3 may be smaller than half (1 / 2) of the dimension LZ1 of the first cover 21 in the Z-axis direction (LZ2 < LZ1 / 2, LZ3 < LZ1 / 2). In these cases, when opening the second cover 22 or the third cover 23, the distance by which the high-capacity paper feed unit 80 needs to be moved in the X-axis direction can be shortened.

[0066] As shown in FIG. 10, a side edge 20S of a cassette cover 20K, which is an example of the fourth cover, may form a gap G with at least one of a side edge 21S of the first cover 21 and a side edge 22S of the second cover 22. The gap G may open in the X-axis direction. That is, when viewing the multifunction machine 11 from the front, the gap G may not be visible as it is hidden by the side edge 20S of the cassette 20.

[0067] <Operation> The operation of the multifunction machine 11 and the recording system 10 of this embodiment will be described. Media M having different sizes and / or paper types are accommodated in the plurality of cassettes 20. The user specifies recording conditions including the size and paper type of the media M and instructs the multifunction machine 11 to perform recording. The media M is supplied from the cassette 20 that accommodates the specified-size and paper-type media M. The media M supplied from the cassette 20 reaches the conveyance path T7 through at least a part of the conveyance paths T1 to T4. Then, the liquid ejection head 30A records on the media M at the recording position RP on the conveyance path T7. After recording, the media M is discharged to the discharge unit 31 from the conveyance path T8 or the conveyance path T9.

[0068] In addition, when double-sided recording is performed, the medium M after recording on the first side by the liquid ejection head 30A is sent to the inversion path T10 by the flap 50, and after being transported upward along the inversion path T10, the medium M is transported backward along the inversion path T10 by a switchback that reverses the transport direction. The reversely transported medium M is re-fed by the transport roller pairs 54-56 along the inversion paths T10 and T11 to the recording position RP facing the liquid ejection head 30A again. At this time, the medium M is re-fed with the second side, which is the side opposite to the first side of the medium M, facing the liquid ejection head 30A. The liquid ejection head 30A records on the second side of the re-fed medium M. Then, the medium M after double-sided recording is discharged from the transport path T8 or the transport path T9 to the discharge section 31.

[0069] Furthermore, when performing large-volume recording with the multifunction device 11, a large-capacity paper feed unit 80 is used as a supply source for the medium M. That is, recording on the medium M is performed using a recording system 10 configured with the multifunction device 11 and the large-capacity paper feed unit 80. The large-capacity paper feed unit 80 is coupled to the multifunction device 11 by inserting a feed guide 86 of the large-capacity paper feed unit 80 into the carry-in opening 66 of the second cover 22 of the multifunction device 11.

[0070] When recording is started, the medium M stored in the large-capacity paper feed unit 80 is fed one by one into the device body 12 of the multifunction device 11 via the feed guide 86 and the carry-in entrance 66. At this time, the medium M is fed to the recording position RP through the transport paths T6 and T7 by the rotation of the carry-in roller 65 and the first transport roller 61. Then, the liquid ejection head 30A records on the medium M at the recording position RP. The medium M after recording is discharged to the discharge section 31. In addition, when double-sided recording is performed, the medium M is reversed by switchback transport via the reversing paths T10 and T11 as described above, and then re-fed to the recording position RP, so that recording is performed on both sides of the medium M. The medium M after recording on both sides is discharged to the discharge section 31. In this way, for example, the medium M after recording is stacked on the discharge tray 32.

[0071] <Removing jams from multifunction device 11> However, during a recording operation of the multifunction device 11, a jam may occur in which the medium M gets stuck in the middle of the transport path T. The control unit 37 monitors whether a jam has occurred based on detection signals from a plurality of sensors provided at various points on the transport path T. When the control unit 37 detects the occurrence of a jam, it displays a message to the effect that a jam has occurred on the display unit 19A. Based on the information contained in the message about the cover that should be opened to clear the jam, the user opens the specified cover and performs the jam clearing operation.

[0072] If the cover specified in the message is the first cover 21, the user opens the first cover 21 and performs the jam removal operation. If the covers specified in the message are the first cover 21 and the second cover 22, the user opens the first cover 21 and the second cover 22 to remove the jam, as shown in Fig. 4. Since the first cover 21 opens horizontally and the second cover 22 opens vertically so as to be rotatable about its lower end, the first opening 121 and the second opening 122 are opened in succession. Therefore, there is nothing between the first opening 121 and the second opening 122 to obstruct the jam removal, so that the jam removal can be performed efficiently.

[0073] In addition, the first cover 21 is larger than the second cover 22, and is considerably heavy since the transport mechanism 70 is integrally provided on the back surface of the first cover 21 and the feed tray 24 is provided. Therefore, when the first cover 21 is opened, the first cover 21 is likely to sag under its own weight. However, the vertically opening second cover 22 is retracted downward below the first cover 21 in the open state. Therefore, even if the first cover 21 sags under its own weight, it will not collide with the second cover 22.

[0074] For example, in the comparative example MFP 100 shown in FIG. 11, the first cover 101 opens sideways as in the embodiment, but the second cover 102 and the third cover 103 also open sideways. In this comparative example, it is necessary to provide a rib 111 made of a frame or exterior between the first cover 101 and the second cover 102. Therefore, when the first cover 101 and the second cover 102 are opened, the rib 111 is present between the first opening 121 and the second opening 122, which is an obstacle. Therefore, the rib 111 may get in the way and make it difficult to remove a jam. Even if the rib 111 is eliminated, if the first cover 101 hangs down due to its own weight, it is likely to come into contact with the second cover 102, which is at the same height as in the closed state when the cover is opened sideways. For example, the first cover 101 and the second cover 102 may collide. In this case, it is necessary to carefully open and close the first cover 101 and the second cover 102. In the comparative example, a crosspiece 112 is also provided between second cover 102, which opens laterally, and third cover 103, which also opens laterally.

[0075] In contrast, according to the multifunction device 11 of this embodiment, the first cover 21 opens horizontally and the second cover 22 opens vertically with its lower end as a fulcrum, so that even if the first cover 21 sags under its own weight when both the first cover 21 and the second cover 22 are opened, the first cover 21 and the second cover 22 are unlikely to come into contact or collide with each other. Furthermore, when the first cover 21 and the second cover 22 are opened, an opening is formed in which the first opening 121 and the second opening 122 are continuous, so that jam removal work can be performed without obstructions such as crosspieces.

[0076] <Recording system jam removal work> Furthermore, when a jam occurs in the recording system 10 equipped with the large-capacity paper feed unit 80, the user performs the jam removal operation as follows.

[0077] When the first cover 21 is specified in the message, the first cover 21 is opened with the large-capacity paper feed unit 80 connected to the multifunction device 11, as shown in Fig. 8. At this time, although the large-capacity paper feed unit 80 is located to the side of the side surface 12S of the multifunction device 11, the user can remove jams from the front of the multifunction device 11 at the first opening 121.

[0078] When at least one of the second cover 22 and the third cover 23 is specified in the message, as shown in FIG. 9, the large-capacity feed unit 80 is moved in the X-axis direction to separate it from the multifunction device 11 by a predetermined distance. Then, at least one of the second cover 22 and the third cover 23 is opened. For example, as shown in the example in FIG. 9, both the second cover 22 and the third cover 23 are opened. The dimensions LZ2 and LZ3 of the second cover 22 and the third cover 23 in the Z-axis direction are smaller than the dimensions LY2 and LY3 of the second cover 22 and the third cover 23 in the Y-axis direction. Furthermore, in this example, the dimensions LZ2 and LZ3 of the second cover 22 and the third cover 23 in the Z-axis direction are shorter than half the dimension LZ1 of the first cover 21 in the Z-axis direction. Therefore, the predetermined distance by which the large-capacity feed unit 80 needs to be moved in the X-axis direction in order to open at least one of the second cover 22 and the third cover 23 can be shortened. Therefore, the installation area required for the installation of the recording system 10, including the jam removal operation, can be relatively narrow.

[0079] The effects of this embodiment will be described. (1) Of the Z-axis perpendicular to the installation surface F of the multifunction device 11 as an example of a medium transport device, the side of the medium transport device relative to the installation surface F is defined as the +Z side, and the opposite side is defined as the -Z side, and two orthogonal axes in the in-plane direction of the installation surface F are defined as the X-axis and the Y-axis, respectively. The multifunction device 11 includes a device body 12 having a transport path T for transporting a medium M, and a cover CV provided on a side surface 12S of the device body 12 and switchable between a first state exposing the transport path T and a second state covering the transport path T. The cover CV has a rotation shaft 21B along the Z-axis and is divided into a first cover 21 that is rotatable relative to the device body 12, and a second cover 22 that is disposed on the -Z side of the first cover 21, has a rotation shaft 22B along the Y-axis on the -Z side, and is rotatable relative to the device body 12.

[0080] According to this configuration, the cover CV is divided into the first cover 21 and the second cover 22, and therefore, by opening the first and second covers 22, the conveying path T extending from the first cover 21 to the second cover 22 is continuously opened. Therefore, workability is good. In addition, even if the first cover 21 is likely to sag on the -Z side due to its own weight, the rotation shaft 22B of the second cover 22 arranged on the -Z side is arranged along the Y axis and on the -Z side, so that the sagging first cover 21 and the second cover 22 are unlikely to collide with each other. Therefore, good opening and closing operations can be ensured. Therefore, both workability when opening the cover and good opening and closing operations of the cover can be achieved.

[0081] (2) Device body 12 is arranged in the X-axis direction with respect to device body 12, stores medium M, and is configured to be able to feed medium M from large-capacity feed unit 80, which is an example of a feeding device that feeds the stored medium M to transport path T. The lower end of first cover 21 on the -Z side is located on the +Z side of the upper end of large-capacity feed unit 80 on the +Z side.

[0082] According to this configuration, the lower end on the -Z side of first cover 21 is on the +Z side of the upper end on the +Z side of large-capacity paper feed unit 80, so that first cover 21 does not collide with large-capacity paper feed unit 80 when it is opened. Therefore, even when a configuration is adopted in which medium M is supplied to transport path T from large-capacity paper feed unit 80, operability is good.

[0083] (3) The position of the large-capacity feeding unit 80 in the Z-axis direction overlaps with the position of the second cover 22 in the Z-axis direction, and the large-capacity feeding unit 80 is movable in the X-axis direction relative to the device body 12. The dimension LY1 in the Y-axis direction of the first cover 21 is larger than the dimension LZ2 in the Z-axis direction of the second cover 22. With this configuration, the amount of movement of the large-capacity feeding unit 80 can be reduced when the second cover 22 is opened. Therefore, the installation area F (the set area of ​​the media transport system) required for jam removal can be reduced.

[0084] (4) Second cover 22 has an inlet 66 through which medium M transported from large-capacity feeder unit 80 passes. With this configuration, compared to a configuration in which first cover 21 has inlet 66, large-capacity feeder unit 80 does not get in the way when first cover 21 is opened or closed.

[0085] (5) The multifunction device 11 further includes a third cover 23 that is disposed on the -Z side of the cover CV, has a rotation shaft 23B on the -Z side along the Y axis perpendicular to the Z axis, and is rotatable with respect to the device body 12. The dimension LY3 of the third cover 23 in the Y axis direction is larger than the dimension LZ3 of the third cover 23 in the Z axis direction. With this configuration, the space required in the X axis direction when opening the third cover 23 can be reduced. Therefore, the distance that the large-capacity paper feed unit 80 is moved to open the third cover 23 can be shortened.

[0086] (6) The dimension LY1 of first cover 21 in the Y-axis direction is smaller than the dimension LZ1 of first cover 21 in the Z-axis direction. With this configuration, rotation axis 21B of first cover 21 is aligned along the Z-axis, which is the longitudinal direction of first cover 21, so that the space required in the X-axis direction to open first cover 21 can be reduced while more of the transport path T can be exposed when first cover 21 is opened.

[0087] (7) The dimension LY2 of the second cover 22 in the Y-axis direction is larger than the dimension LZ2 of the second cover 22 in the Z-axis direction. With this configuration, the rotation axis 22B of the second cover 22 is aligned along the Y-axis, which is the longitudinal direction of the second cover 22, and therefore it is possible to reduce the space required in the X-axis direction to open the second cover 22 while exposing more of the transport path T when the second cover 22 is opened.

[0088] (8) The dimension LZ2 in the Z-axis direction of second cover 22 is smaller than the dimension LZ1 in the Z-axis direction of first cover 21. With this configuration, the space in the X-axis direction can be reduced when second cover 22 is open. In addition, it is easy to place a tray or the like on first cover 21.

[0089] (9) The first cover 21 has a feed tray 24 as an example of a tray on which the medium M is placed. According to this configuration, since the first cover 21 has the feed tray 24, a variety of media M (e.g., media M having different thicknesses or basis weights) can be supplied to the transport path T.

[0090] Here, since the first cover 21 has the feed tray 24, the first cover 21 is likely to sag in the -Z direction. Also, since the position of the large-capacity feed unit 80 in the Z-axis direction does not overlap with the first cover 21, the feed tray 24 does not collide with the large-capacity feed unit 80 when it is opened. In other words, it is not necessary to move the large-capacity feed unit 80 in the X-axis direction to open the feed tray 24. Also, the large-capacity feed unit 80 may be at the same height as the second cover 22. Even in this case, the feed tray 24 does not collide with the large-capacity feed unit 80 when it is opened.

[0091] (10) The first cover 21 includes a feed roller 43 that feeds the medium M placed on the feed tray 24 to the transport path T. According to this configuration, by opening the first cover 21, the medium M that is jammed by the feed roller 43 can be easily removed.

[0092] (11) The feed tray 24 has a rotation shaft 24C along the Y axis, and is configured to be rotatable with respect to the first cover 21. According to this configuration, the feed tray 24 can be deployed or stored by rotating.

[0093] (12) The multifunction device 11 further includes a cassette 20 on which multiple media M are placed. The second cover 22 is located at a position where its Z-axis direction position overlaps with the Z-axis direction position of the cassette 20. The first cover 21 is located at a position where its Z-axis direction position does not overlap with the Z-axis direction position of the cassette 20, and covers the reversing paths T10, T11, which are transport paths downstream of the transport paths T1, T2, which are transport paths covered by the second cover 22. With this configuration, the transport path T near the cassette 20 is a location where jam removal work is frequently performed due to multiple feeding, etc. Only this location can be opened by the second cover 22. This makes it easy to use when removing jams.

[0094] (13) The first cover 21 is heavier than the second cover 22. According to this configuration, when both the first cover 21 and the second cover 22 are opened, the first cover 21 is likely to sag due to its own weight, but due to the way in which the first and second covers 21 and 22 are opened, the second cover 22 is positioned below and away from the first cover 21. Therefore, the first cover 21 is less likely to come into contact with the second cover 22.

[0095] (14) The transport path T has reversing paths T10, T11, which are an example of a switchback path. The first cover 21 forms the reversing paths T10, T11. According to this configuration, since the transport path T has the reversing paths T10, T11, which are switchback paths, the medium M can be reversed. For example, when the medium transport device is a multifunction device 11 equipped with a recording function, double-sided recording can be performed on the medium M. Since the first cover 21 has the reversing paths T10, T11, the reversing paths T10, T11 can be easily exposed by opening the first cover 21. Therefore, it is easy to remove jams during double-sided recording. In addition, the first cover 21 forming the reversing paths T10, T11 becomes heavy. If the first cover 21 becomes heavy, it is likely to sag when opened, but due to the way in which the first cover 21 and the second cover 22 are opened, the first cover 21 is unlikely to come into contact with the second cover 22 when both covers 21, 22 are opened.

[0096] (15) The dimension LY1 of the first cover 21 in the Y-axis direction is equal to the dimension LY2 of the second cover 22 in the Y-axis direction. The side edge 21S of the first cover 21 extending in the Z-axis direction and the side edge 22S of the second cover 22 extending in the Z-axis direction are on a straight line in the Z-axis direction. With this configuration, the side edges 21S, 22S of the first cover 21 and the second cover 22 are aligned, resulting in a good appearance.

[0097] (16) The multifunction device 11 includes a cassette cover 20K, which is an example of a fourth cover that can be opened and closed relative to the device body 12, on a side surface 12F (front surface) facing the Y-axis direction. A side edge 20S of the cassette cover 20K forms a gap G with at least one of the side edge 21S of the first cover 21 and the side edge 22S of the second cover 22. According to this configuration, the side edge 20S of the cassette cover 20K forms the gap G with at least one of the first cover 21 and the second cover 22, so that the number of gaps adjacent to the side edge 20S of the cassette cover 20K can be reduced. Therefore, the multifunction device 11 looks good when viewed from the side surface facing the cassette cover 20K. For example, if a part (e.g., a batten) constituting the housing 12A is located adjacent to the side edge 20S of the cassette 20, a gap will be formed in part of the periphery of the cassette 20 when viewed from the front. In contrast, in the multifunction device 11, the gap G is hidden behind the side edge 20S of the cassette 20 when viewed from the front, so that the multifunction device 11 has a good appearance when viewed from the front.

[0098] (17) The direction in which the side surface 12F on which the cassette cover 20K is provided faces is the same as the direction in which the operation panel 19 of the multifunction device 11 faces. The gap G opens toward the X-axis direction. With this configuration, the gap G does not face the front of the multifunction device 11, which provides a good appearance.

[0099] (18) The cassette cover 20K is provided on the cassette 20 that can be pulled out in the Y-axis direction and that holds the medium M to be fed. With this configuration, the cassette 20 is used frequently by users, and therefore the cassette cover 20K is frequently seen by users. Such a cassette cover 20K covers the gap between the cassette 20 and the portion of the housing 12A of the multifunction device 11 that houses the cassette 20 so that it can be pulled out. For this reason, the gap G is not visible when the cassette cover 20K is viewed from the front. The appearance is good when viewed from the front where the multifunction device 11 is standing.

[0100] (19) The multifunction device 11 further includes a liquid ejection head 30A that ejects liquid onto the medium M. The liquid ejection head 30A is provided in the device body 12. With this configuration, the liquid ejection head 30A is provided in the device body 12, not in the cover CV, and therefore it is possible to prevent the meniscus of the nozzle of the liquid ejection head 30A from being damaged by the impact of opening and closing the cover CV.

[0101] (20) According to the recording system 10 as an example of a medium transport system, the above-mentioned effects (1) to (19) can be similarly obtained. The above embodiment can be modified to the following modified examples. Further modified examples can be appropriately combined with the above embodiment and the following modified examples, or further modified examples can be appropriately combined with each other.

[0102] The tray of the first cover 21 may be a discharge tray. For example, as shown in FIG. 12, the first cover 21 has a discharge tray 90 as an example of a tray on which the medium M is placed. The multifunction device 11 includes a discharge roller 91 that discharges the medium M from the transport path T to the discharge tray 90. The discharge tray 90 has a rotation shaft 90B along the Y axis and is configured to be rotatable with respect to the first cover 21. The discharge tray 90 has a handle 90A. Thus, the discharge tray 90 can be deployed or stored by rotating. Also, since the first cover 21 has the discharge tray 90, the first cover 21 is likely to hang down in the -Z direction. Furthermore, since the position of the large-capacity paper feed unit 80 in the Z-axis direction does not overlap with the first cover 21, the discharge tray 90 does not collide with the large-capacity paper feed unit 80 when the discharge tray 90 is opened. In other words, it is not necessary to move the large-capacity paper feed unit 80 in the X-axis direction to open the discharge tray 90. Furthermore, the large-capacity paper feed unit 80 may be at the same height as the second cover 22. Even in this case, the discharge tray 90 will not collide with the large-capacity paper feed unit 80 when it is opened. Furthermore, because the first cover 21 has the discharge tray 90, a variety of media M (e.g., media M with different thicknesses and basis weights) can be discharged from the transport path T. Furthermore, by opening the first cover 21, it is easy to remove jammed media M by the discharge roller 91. Note that the first cover 21 may include both the feed tray 24 and the discharge tray 90, as an example of a tray.

[0103] The third cover 23 may be eliminated. In this case, the dimension of the second cover 22 in the Z-axis direction may be greater than that of the above embodiment. For example, in the above embodiment, one cover of the area occupied by the second cover 22 and the third cover 23 may be the second cover 22.

[0104] The third cover is not limited to a rotating type having a rotating shaft, but may be a removable cover that is detachable from the device body 12. The third cover is not limited to a configuration that covers the transport path, and may be a cover that covers a component other than the transport path inside the apparatus body 12. The component may be a waste liquid tank or the like.

[0105] The lower end of the first cover 21 in the Z axis direction may be lower than the upper end of the large-capacity paper feed unit 80 in the Z axis direction. The first cover 21 does not have to have a tray.

[0106] The feeding device is not limited to the large-capacity feeding unit 80. It may be an intermediate device that transports the medium M brought in from the outside along the internal transport path T and discharges it to the medium transport device. An intermediate device as an example of this type of feeding device may be a device that transports the medium M after recording in order to dry it, or may be a device that includes a reversing path as a transport path that reverses the orientation of the recorded medium.

[0107] The side surface of the device body 12 on which the cover CV is provided may be the side surface opposite to that in the above embodiment (the left side surface when viewed from the front) of the two side surfaces facing the X-axis direction. Also, the side surface of the device body 12 on which the cover CV is provided may be the front surface or the back surface.

[0108] The cassette cover 20K, which is an example of the fourth cover, may be fixed to the end of the cassette 20 in the pull-out direction, or may be a rotating body having a rotation axis along the X-axis direction and provided rotatably with respect to the device body 12. In the latter case, the fourth cover covers the cassette 20 in a closed state, and the cassette 20 is exposed and can be pulled out by opening the fourth cover.

[0109] The cassette cover 20K, which is an example of the fourth cover, may be provided on a side surface other than the front surface of the device body 12. In other words, the direction in which the side surface on which the cassette cover 20K is provided faces does not have to be the same as the direction in which the operation panel 19 of the multifunction device 11 faces. For example, the cassette cover 20K may be provided on the same side surface as the first cover 21, or on the side surface opposite to the side surface 12S on which the first cover 21 is provided.

[0110] The fourth cover is not limited to being the cassette cover 20K, and may be a rotating body that exposes a tank or cartridge that stores a liquid or the like to be ejected onto the medium M. This fourth cover may be a rotating body (cover) having a rotation axis along the X-axis direction.

[0111] In the multifunction device 11 having two tiers of cassettes 20 instead of four tiers, the lower end of the -Z side of the first cover 21 may be configured to be on the +Z side of the upper end of the +Z side of the large-capacity feed unit 80 as an example of a feeding device. Furthermore, when this condition is satisfied, the number of tiers of cassettes 20 may be three or five.

[0112] Instead of the second cover 22, the third cover 23 may be configured to have an entrance 66 through which the medium M conveyed from the large-capacity paper feed unit 80, which is an example of a feeding device, passes. The third cover 23 may have a rotation axis along the Z axis and be rotatable relative to the device body 12 .

[0113] The medium M is not limited to cut sheets of paper, but may be rolled paper. The medium M is also not limited to paper, but may be a sheet or film made of plastic, metal, laminate, or ceramic. Furthermore, the medium M may be fabric (including woven fabric, nonwoven fabric, and knitted fabric).

[0114] The medium transport device may be a multifunction device 11 or a printing device that does not include a cassette 20. For example, the medium transport device may be configured to be constantly used as a recording system to which the medium M is supplied from an external device such as a large-capacity paper feed unit 80.

[0115] The medium conveying device is not limited to the multifunction device 11. The medium conveying device may be a printing device that does not include the image reading unit 13 and the automatic document feeder 14. The medium transport device is not limited to a multifunction device or a printing device. It may be any device having a transport path for transporting a medium. The medium transport device may not be configured to include a recording unit. That is, the medium transport device may be any device having a processing unit that performs a predetermined process, including recording or a process other than recording, on the medium. That is, the medium transport device may be any device having a processing unit that performs a process on the medium and a transport path that transports the medium along a path that passes through a processing position where the processing unit performs the process. For example, the medium transport device may be an image reading device having a reading unit as a processing unit that performs a reading process to read an image of a document. The processing unit may be a processing unit that ejects or applies a processing liquid to the medium. The processing unit may be a drying unit that performs a drying process to dry the medium. The drying unit may be, for example, a blowing unit or a heating unit.

[0116] The technical ideas and effects obtained from the above-described embodiment and modified examples will be described below. (A) A medium transporting device, comprising: a device main body having a transport path for transporting a medium, and a cover provided on a side of the device main body and switchable between a first state exposing the transport path and a second state covering the transport path, the cover having a rotation axis along the Z axis and being rotatable relative to the device main body, and a second cover arranged on the -Z side of the first cover, having a rotation axis along the Y axis on the -Z side, and being rotatable relative to the device main body.

[0117] According to this configuration, since the cover is divided into the first cover and the second cover, the conveying path between the first cover and the second cover is continuously opened by opening the first and second covers. Therefore, workability is good. Furthermore, even if the first cover is likely to sag on the -Z side due to its own weight, the rotation axis of the second cover arranged on the -Z side is arranged along the Y axis and on the -Z side, so the sagging first cover and the second cover are unlikely to collide. Therefore, good opening and closing operation can be ensured. Therefore, both workability when opening the cover and good opening and closing operation of the cover can be achieved.

[0118] (B) In the above-mentioned medium conveying device, the device main body is arranged in the X-axis direction with respect to the device main body, and is configured to be able to feed a medium from a feeding device that stores a medium and feeds the stored medium to the conveying path, and the lower end on the -Z side of the first cover may be located on the +Z side of the upper end of the +Z side of the feeding device.

[0119] According to this configuration, the lower end of the -Z side of the first cover is located on the +Z side of the upper end of the +Z side of the feeding device, so the first cover does not collide with the feeding device when it is opened. Therefore, even when the medium is supplied to the transport path from the feeding device, the workability is good.

[0120] (C) In the above-mentioned medium conveying device, the Z-axis position of the feeding device may overlap with the Z-axis position of the second cover, and the feeding device may be movable in the X-axis direction relative to the device main body, and the Y-axis dimension of the first cover may be larger than the Z-axis dimension of the second cover.

[0121] According to this configuration, the amount of movement of the feeding device can be reduced when the second cover is opened, and therefore the installation area required for removing jams (the set area of ​​the medium transport system) can be reduced.

[0122] (D) In ​​the above medium transport device, the second cover may include an entrance through which the medium transported from the feeding device passes. According to this configuration, compared to a configuration in which the first cover has an entrance, the feeding device does not get in the way when the first cover is opened or closed.

[0123] (E) In the above-mentioned medium conveying device, a third cover may be further provided, the third cover being arranged on the -Z side of the cover, having a rotation axis on the -Z side along a Y axis perpendicular to the Z axis, and being rotatable relative to the device main body, and the dimension of the third cover in the Y axis direction may be larger than the dimension of the third cover in the Z axis direction.

[0124] According to this configuration, the space required in the X-axis direction when opening the third cover can be reduced, and therefore the distance that the feeding device needs to be moved in order to open the third cover can be shortened. (F) In the medium conveying device, the dimension of the first cover in the Y axis direction may be smaller than the dimension of the first cover in the Z axis direction.

[0125] With this configuration, the rotation axis of the first cover is aligned along the Z-axis, which is the longitudinal direction of the first cover, so that the space required in the X-axis direction to open the first cover can be reduced while exposing more of the transport path when the first cover is opened.

[0126] (G) In the above medium conveying device, the dimension of the second cover in the Y axis direction may be greater than the dimension of the second cover in the Z axis direction. With this configuration, the rotation axis of the second cover is aligned along the Y-axis, which is the longitudinal direction of the second cover, so that the space required in the X-axis direction to open the second cover can be reduced while exposing more of the transport path when the second cover is opened.

[0127] (H) In the above medium transport device, the dimension of the second cover in the Z axis direction may be smaller than the dimension of the first cover in the Z axis direction. This configuration makes it possible to reduce the space required in the X-axis direction when the second cover is open, and also makes it easy to place a separate member such as a tray on the first cover.

[0128] (I) In the above medium transport device, the first cover may have a tray on which a medium is placed. According to this configuration, since the first cover has a tray, various media (for example, media with different thicknesses or basis weights) can be supplied to or discharged from the transport path.

[0129] (J) In the above medium transport device, the first cover may include a feed roller that feeds the medium placed on the tray to the transport path, or a discharge roller that discharges the medium from the transport path to the tray.

[0130] According to this configuration, a medium that is jammed at the feed roller or the discharge roller can be easily removed by opening the first cover. (K) In the above medium transport device, the tray may have a rotation axis along a Y axis and be configured to be rotatable relative to the first cover.

[0131] According to this configuration, the tray can be deployed or retracted by rotating. (L) The above-mentioned media conveying device may further include a cassette for placing multiple media, wherein the second cover is located at a position in the Z axis direction that overlaps with the Z axis direction position of the cassette, and the first cover is located at a position in the Z axis direction that does not overlap with the Z axis direction position of the cassette, and covers a conveying path downstream of the conveying path covered by the second cover.

[0132] According to this configuration, the transport path near the cassette is a place where jam removal work is frequently performed due to double feeding, etc. Only this place can be opened by the second cover, so it is easy to use when removing jams.

[0133] (M) In the above medium conveying device, the first cover may be heavier than the second cover. With this configuration, when both the first cover and the second cover are opened, the first cover tends to sag due to its own weight, but due to the way the covers are opened, the second cover is positioned below and away from the first cover, making it difficult for the first cover to come into contact with the second cover.

[0134] (N) In the above medium transport device, the transport path may have a switchback path, and the first cover may form the switchback path. According to this configuration, since the conveying path has a switchback path, the medium can be reversed. For example, if the medium conveying device has a recording function, double-sided recording can be performed on the medium. Since the first cover has a switchback path, the switchback path can be easily exposed by opening the first cover. This makes it easy to remove jams during double-sided recording. In addition, the first cover forming the switchback path becomes heavy. If the first cover becomes heavy, it is more likely to sag when opened, but due to the way the first cover and the second cover are opened, the first cover is less likely to come into contact with the second cover when both are opened.

[0135] (O) In the above-mentioned medium conveying device, the dimension of the first cover in the Y-axis direction may be equal to the dimension of the second cover in the Y-axis direction, and a side edge of the first cover extending in the Z-axis direction and a side edge of the second cover extending in the Z-axis direction may be on a straight line in the Z-axis direction.

[0136] According to this configuration, the side edges of the first cover and the second cover are aligned, which provides a good appearance. (P) In the above-mentioned medium conveying device, a fourth cover that can be opened and closed relative to the device main body is provided on a side facing the Y-axis direction, and a side edge of the fourth cover may form a gap between at least one of the side edges of the first cover and the second cover.

[0137] With this configuration, the side edge of the fourth cover forms a gap with at least one of the first cover and the second cover, so the number of gaps adjacent to the edge of the fourth cover can be reduced, and the medium transport device looks good when viewed from the side facing the fourth cover.

[0138] (Q) In the above-mentioned medium conveying device, the direction in which the side on which the fourth cover is provided faces may be the same as the direction in which an operation panel of the medium conveying device faces, and the gap may be open toward the X-axis direction.

[0139] According to this configuration, the gap does not face forward, which gives a good appearance. (R) In the above medium transport device, the fourth cover may be provided on a cassette that can be pulled out in the Y-axis direction and that holds the medium to be fed.

[0140] According to this configuration, the cassette is used frequently by users, and therefore the fourth cover is frequently seen by the user. Such a fourth cover covers the gap between the cassette and a housing in which the cassette is accommodated so as to be removable. Therefore, when the fourth cover is viewed from the front, the gap is hidden by the fourth cover and cannot be seen. When the medium transport device is viewed with the side on which the fourth cover is provided facing the front, it has a good appearance.

[0141] (S) The medium transport device may further include a liquid ejection head that ejects liquid onto the medium, the liquid ejection head being provided on the device body. According to this configuration, the liquid ejection head is provided on the apparatus body, not on the cover, so that it is possible to prevent the meniscus of the nozzle of the liquid ejection head from being damaged by the impact caused when the cover is opened and closed.

[0142] (T) A medium transport system including a medium transport device and a feeding device that feeds a medium to the medium transport device, the medium transport device being provided with a device main body having a transport path for transporting a medium, and a cover provided on a side of the device main body and switchable between a first state that exposes the transport path and a second state that covers the transport path, the cover being ... the feeding device is arranged in the X-axis direction relative to the device body of the medium transport device, and is configured to store medium and feed the stored medium to the transport path, the medium transport device is configured to be able to feed medium from the feeding device, and the lower end of the -Z side of the first cover is located on the +Z side of the upper end of the +Z side of the feeding device.

[0143] According to this configuration, in the medium transport system, it is possible to achieve both ease of operation when opening the cover of the medium transport device and smooth opening and closing operation of the cover. [Explanation of symbols]

[0144] 10...recording system as an example of a media transport system, 11...multifunction peripheral as an example of a media transport device, 12...device body, 12A...housing, 12S...side, 12F...side, 121...first opening, 122...second opening, 13...image reading unit, 14...automatic document feeder, 15...printer unit, 16...casters, 17...document tray, 18...output tray, 19...operation panel, 19A...display unit, 20...cassette, 20A...first cassette, 20B...second cassette, 20C...third cassette, 20D...fourth cassette, 20E...handle, 20K...cassette cover as an example of a fourth cover, 20S...side edge, 21...first cover, 21A...handle, 21B...rotating shaft, 21S...side edge , 22... second cover, 22A... handle, 22B... pivot shaft, 22S... side edge, 23... third cover, 23A... handle, 23B... pivot shaft, 23S... side edge, 24... feed tray as an example of a tray, 24A... handle, 24B... edge guide, 24C... pivot shaft, 30... recording unit, 30A... liquid ejection head, 31... discharge unit, 32... discharge tray, 33... medium width sensor, 35... liquid supply source, 36... waste liquid storage unit, 37... control unit, 41... feed roller, 43... feed roller, 45, 46, 47, 54... conveying roller pair, 45A, 46A, 54A... drive roller, 45B, 46B, 54B... driven roller, 48... conveying belt, 49, 51, 53... discharge roller pair, 50,52...flap, 61...first transport roller, 62...second transport roller, 63...third transport roller, 64...fourth transport roller, 65...feed roller, 66...feed entrance, 70...transport mechanism, 71...first guide member, 72...second guide member, 73...third guide section (second cover side), 74...fourth guide section (apparatus main body side), 75...fifth guide section (third cover side), 76...sixth guide section (apparatus main body side), 77...support link, 80...large capacity feed unit as an example of a feeding device, 81...housing, 82...large capacity cassette, 82A...handle, 83...caster, 84...feed roller, 85...separation roller pair, 86...feed guide, 90...ejection tray, 90B...rotating shaft, 91...ejection roller, T...transport path, T1...first transport path, T2...second Transport path, T3...third transport path, T4...fourth transport path, T5...fifth transport path, T6...sixth transport path, T7...seventh transport path, T8...eighth transport path, T9...ninth transport path, T10...reversal path, T11...reversal path, LY1...dimension in the Y-axis direction (first cover), LZ1...dimension in the Z-axis direction (first cover), LY2...dimension in the Y-axis direction (second cover), LZ2...dimension in the Z-axis direction (second cover), LY3...dimension in the Y-axis direction (third cover), LZ3...dimension in the Z-axis direction (third cover), LZ4...dimension in the Z-axis direction (cassette), LY5...dimension in the Y-axis direction (tray), LZ5...dimension in the Z-axis direction (tray), LZ6...dimension in the Z-axis direction (large capacity cassette), D...original, M...medium, F...installation surface, X...width direction, Y...depth direction, Z...vertical direction, CV...cover, G...gap. ,

Claims

1. A medium conveying device, the medium conveying device being arranged such that a Z-axis perpendicular to a surface on which the medium conveying device is installed is The medium transport device side is the +Z side and the opposite side is the -Z side. If the two perpendicular axes are the X-axis and the Y-axis, an apparatus body having a transport path for transporting a medium; a first state in which the conveying path is exposed and a second state in which the conveying path is exposed a cover that can be switched between a first state in which the cover is covered and a second state in which the cover is covered; Equipped with The cover is a first cover having a rotation axis along the Z axis and rotatable with respect to the device body; The device is disposed on the −Z side of the first cover and has a rotation axis along the Y axis on the −Z side. a second cover that is rotatable relative to the main body; By opening the first cover and the second cover, the first cover and the second cover The conveying path between the bar is continuously opened, The medium transport device according to the present invention is characterized in that the first cover has a larger occupancy area than the second cover. Place.

2. The device body is arranged in the X-axis direction with respect to the device body, and stores a medium. The medium is configured to be fed from a feeding device that feeds the medium to the transport path, The lower end of the first cover on the −Z side is located on the +Z side of the upper end of the feeding device on the +Z side.

2. The medium transport device according to claim 1, further comprising:

3. The position of the feeding device in the Z-axis direction is at a position overlapping with the position of the second cover in the Z-axis direction. and the feeding device is movable in the X-axis direction relative to the device body, The dimension of the first cover in the Y-axis direction is larger than the dimension of the second cover in the Z-axis direction.

3. The medium transport device according to claim 2, further comprising:

4. The second cover has an entrance through which the medium transported from the feeding device passes.

4. The medium transport device according to claim 2 or 3, wherein:

5. A medium conveying device, comprising: a Z-axis perpendicular to an installation surface of the medium conveying device; The medium transport device side is the +Z side and the opposite side is the -Z side. If the two perpendicular axes are the X-axis and the Y-axis, an apparatus body having a transport path for transporting a medium; a first state in which the conveying path is exposed and a second state in which the conveying path is exposed a cover that can be switched between a first state in which the cover is covered and a second state in which the cover is covered; The cover is disposed on a -Z side thereof, and has a rotation axis on the -Z side along a Y axis perpendicular to the Z axis, a third cover that is rotatable relative to the device body; Equipped with The cover is a first cover having a rotation axis along the Z axis and rotatable with respect to the device body; The device is disposed on the −Z side of the first cover and has a rotation axis along the Y axis on the −Z side. a second cover that is rotatable relative to the main body; A dimension of the third cover in a Y-axis direction is larger than a dimension of the third cover in a Z-axis direction, The rotation axis of the second cover is disposed on the +Z side of the third cover. A medium transport device comprising:

6. The first cover has a larger occupancy area than the second cover. The medium transport device described herein.

7. The cover is disposed on a -Z side thereof, and has a rotation axis on the -Z side along a Y axis perpendicular to the Z axis, a third cover that is rotatable relative to the device body; The dimension of the third cover in the Y-axis direction is larger than the dimension of the third cover in the Z-axis direction. The medium transport device according to any one of claims 2 to 4,

8. The dimension of the first cover in the Y-axis direction is smaller than the dimension of the first cover in the Z-axis direction. The medium transport device according to any one of claims 1 to 7,

9. The dimension of the second cover in the Y-axis direction is larger than the dimension of the second cover in the Z-axis direction. The medium transport device according to any one of claims 1 to 8,

10. The dimension of the second cover in the Z-axis direction is smaller than the dimension of the first cover in the Z-axis direction. The medium transport device according to any one of claims 1 to 9,

11. The first cover has a tray on which a medium is placed.

11. A medium conveying device as described in any one of claims 10.

12. The first cover includes a feed roller that feeds the medium placed on the tray to the transport path. Alternatively, the printer may include an ejection roller that ejects the medium from the transport path to the tray.

12. The media transport device of claim 11.

13. The tray has a rotation axis along a Y axis and is configured to be rotatable with respect to the first cover.

13. The medium transport device according to claim 11 or 12, wherein

14. A cassette for mounting a plurality of media thereon is further provided, The second cover is located at a position where its Z-axis direction position overlaps with the Z-axis direction position of the cassette. the law of nature, The first cover is disposed at a position where the position in the Z axis direction does not overlap with the position of the cassette in the Z axis direction. and the second cover covers a conveying path downstream of the conveying path that is covered by the second cover. The medium transport device according to any one of claims 1 to 13.

15. The first cover is heavier than the second cover.

5. A medium transport device according to claim 4.

16. The transport path includes a switchback path, The first cover forms the switchback path.

16. The medium transport device according to claim 15.

17. A dimension of the first cover in the Y-axis direction is equal to a dimension of the second cover in the Y-axis direction, a side edge of the first cover extending in the Z-axis direction; and a side edge of the second cover extending in the Z-axis direction. is on a straight line in the Z-axis direction. The media transport device.

18. A fourth cover that can be opened and closed with respect to the device body is provided on a side surface of the device body facing the Y-axis direction. Preparation, The side edge of the fourth cover is at least one of the side edges of the first cover and the second cover. Any one of claims 1 to 17, characterized in that a gap is formed between the first and second electrodes. Item 3. A medium transport device according to item 2.

19. The side surface on which the fourth cover is provided faces in a direction in which an operation panel of the medium conveying device faces. It is the same as the direction it faces, 19. The medium according to claim 18, wherein the gap is open toward the X-axis direction. Body transport device.

20. The fourth cover is a cassette that can be pulled out in the Y-axis direction and holds the medium to be fed.

20. The medium transport device according to claim 18, wherein the medium transport device is provided on the cassette on which the medium is placed. .

21. Further comprising a liquid ejection head that ejects liquid onto a medium, The liquid ejection head is provided in the device body.

21. A medium transport device as described in any one of claims 20 to 21.

22. A medium conveying device according to claim 1 or claim 5; a feeding device that feeds a medium to the medium transport device; Equipped with The feeding device is arranged in the X-axis direction with respect to the device body of the medium transport device and stores the medium. The medium is transported along the transport path. the medium transport device is configured to be capable of feeding a medium from the feeding device; The lower end of the first cover on the −Z side is located on the +Z side of the upper end of the feeding device on the +Z side. A media transport system comprising:

Images