Media transport mechanism

Abstract

To elevate and lower an object to be suspended which is one of that is situated above than the other among a transportation part and a processing part opposite in a vertical direction with high accuracy in a medium transportation mechanism.SOLUTION: A test device (one example of a medium transportation mechanism) 1 comprises a first transportation part 10 transporting a medium M, a first test part (one example of a first processing part) 20 arranged so as to be opposite to the first transportation part 10 in a vertical direction and executing a processing to the medium M, flexible suspension wires (one example of a suspension member) 51-54 coupled to the first transportation part (one example of first object to be suspended) 10 which is one of that is situated above than the other among the first transportation part 10 and the first test part 20 and suspending the first transportation part 10, and flexible tension wires 61-64 (one example of a tension member) pulling the first transportation part 10 downward.SELECTED DRAWING: Figure 5A

Description

[Technical field]

[0001] The present invention relates to a media transport mechanism. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is known a printing apparatus in which a belt platen transport unit that transports paper is suspended by a wire and can be raised and lowered (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-129959 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in a media conveying mechanism that includes a conveying unit that conveys media such as paper, and a processing unit (e.g., an inspection unit, a printing unit, etc.) that is arranged to face the conveying unit from above and below, the hanging target, which is one of the conveying unit and the processing unit located above, may be hung by, for example, four hanging members such as wires.

[0005] In such a case, when the suspended object is brought into contact with the other of the transport unit and the processing unit, which is located below, the four corners of the suspended object may not come into contact with the other due to, for example, distortion of the processing unit, even if the suspended object is lowered by the hanging member. If the four corners of the suspended object do not come into contact with the other, there is a risk of problems occurring in the processing of the medium by the processing unit and in the transport of the medium by the transport unit.

[0006] An object of the present invention is to provide a medium transport mechanism that can raise and lower a suspended object, which is one of a transport section and a processing section that are positioned above each other and that are opposed to each other in the vertical direction, with high accuracy. [Means for solving the problem]

[0007] In one aspect, the media transport mechanism includes a first transport unit that transports a medium, a first processing unit that is arranged to face the first transport unit in the vertical direction and processes the medium, a flexible hanging member that is connected to a first hanging object that is one of the first transport unit and the first processing unit located above and suspends the first hanging object, and a flexible pulling member that pulls the first hanging object downward. Effect of the Invention

[0008] According to this aspect, the hanging target, which is one of the transport section and the processing section that are opposed to each other in the vertical direction and that is located above, can be raised and lowered with high accuracy. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an internal configuration of a printing system according to an embodiment. [Diagram 2] FIG. 2 is a diagram illustrating a control configuration of a portion of a printing system according to an embodiment. [Diagram 3] FIG. 2 is a rear perspective view showing the inspection device (in a transporting state) according to the embodiment. [Figure 4] FIG. 2 is a rear perspective view showing the inspection device (in a jam-cleared state) according to the embodiment. [Figure 5A] FIG. 1 is a front view (part 1) for explaining the lifting and lowering operations of a first transport unit and a second transport unit of an inspection device according to one embodiment. [Figure 5B] FIG. 11 is a front view (part 2) for explaining the lifting and lowering operations of the first transport unit and the second transport unit of the inspection device according to the embodiment. [Figure 5C] FIG. 11 is a front view (part 3) for explaining the lifting and lowering operations of the first transport unit and the second transport unit of the inspection device according to the embodiment. [Figure 5D] FIG. 4 is a front view (part 4) for explaining the lifting and lowering operations of the first transport unit and the second transport unit of the inspection device according to the embodiment. [Figure 5E]FIG. 5 is a front view (part 5) for explaining the lifting and lowering operations of the first transport unit and the second transport unit of the inspection device according to the embodiment. [Figure 6] FIG. 11 is a front perspective view showing an inspection device (in a transporting state) according to another embodiment. [Figure 7] FIG. 11 is a front perspective view showing a part of an inspection device (dismounted state) according to another embodiment. [Figure 8] FIG. 11 is a front perspective view showing a part of an inspection device (in a transport-fixed state) according to another embodiment. [Figure 9A] FIG. 11 is a front view (part 1) for explaining the lifting and lowering operations of a first transport unit and a second transport unit of an inspection device according to another embodiment. [Figure 9B] FIG. 11 is a front view (part 2) for explaining the lifting and lowering operations of the first transport unit and the second transport unit of an inspection device according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a medium transport mechanism according to one embodiment and another embodiment of the present invention will be described with reference to the drawings, taking inspection devices 1 and 2 as examples.

[0011] <One embodiment> FIG. 1 is a diagram showing the internal configuration of a printing system 100 according to the present embodiment.

[0012] FIG. 2 is a diagram showing a part of the control configuration of the printing system 100. As shown in FIG. Note that the up-down, left-right, and front-to-back directions shown in FIG. 1 and FIG. 3, FIG. 4, and FIG. 5A to FIG. 5E described later are merely directions for the convenience of explanation; for example, the up-down direction is the vertical direction, and the left-right and front-to-back directions are the horizontal directions.

[0013] 1 and 2, the printing system 100 includes a medium supply device 110, a first printing device 120, an intermediate conveying device 130, a second printing device 140, an inspection device 1, and a medium discharge device 150. Here, the inspection device 1 is an example of a medium conveying mechanism that conveys the medium M. This medium conveying mechanism is not limited to the inspection device 1, and may be any mechanism that conveys the medium M. Note that the medium M is, for example, paper (sheets), but may also be other sheet-like media such as film.

[0014] The medium supplying device 110, the first printing device 120, the intermediate conveying device 130, the second printing device 140, the inspection device 1, and the medium discharging device 150 are arranged in series in the transport path (transport direction D) of the medium M. Note that two or more of the medium supplying device 110, the first printing device 120, the intermediate conveying device 130, the second printing device 140, the inspection device 1, and the medium discharging device 150 may be arranged integrally in a common housing. For example, the inspection device 1 may be arranged as a part of the medium discharging device 150. Furthermore, when the printing device and the inspection device 1 are arranged integrally, they can be regarded as the printing device.

[0015] In Figure 1, the straight transport paths R1, R4-1, R5, non-reverse path R8-2, merging path R9, normal storage path R10, and abnormal storage path R11 for the first printing device 120, the intermediate conveying device 130, the second printing device 140, the inspection device 1, and the media discharge device 150 are shown with solid lines, the circulatory transport paths R2 and R6 are shown with dotted lines, and the reversal paths R3, R4-2, R7, and R8-1 are shown with dashed or dotted lines.

[0016] The medium supplying device 110 has a placement table 111 on which the medium M before printing is placed. The first printing device 120 includes a plurality of conveying roller pairs 121, a first printing section 122, a conveying section 123, conveying path switching sections 124 and 125, a switchback roller pair 126, and a discharge section 127.

[0017] A plurality of pairs of transport rollers 121 are arranged inside the first printing device 20 and transport the medium M while nipping it.

[0018] The first printing unit 122 has, for example, line-head type inkjet heads (not shown) for each color used for printing.

[0019] The transport unit 123 is disposed to face the first printing unit 122. The transport unit 123 transports the medium M by a belt while adsorbing the medium M.

[0020] One of the transport path switching units 124 switches the transport path of the medium M printed by the first printing unit 122 between a straight transport path R1 continuing to the intermediate transport device 130 and a circulatory transport path R2 continuing to the discharge unit 127 and an inversion path R3.

[0021] The other transport path switching unit 125 switches the circulatory transport path R2 of the medium M to a transport path continuing to the discharge unit 127 and a reversal path R3 that reverses the front and back of the medium M by a switchback roller pair 126. The medium M that has been reversed in the reversal path R3 is transported again to the first printing unit 122.

[0022] In the ejection section 127, media M that are not ejected to the medium ejection device 100 are stacked. The intermediate conveying device 130 includes a plurality of conveying roller pairs 131 , a switchback roller pair 132 , and a conveying path switching unit 133 .

[0023] The transport roller pair 131 transports the medium M discharged from the first printing device 120 while nipping it.

[0024] The transport path switching unit 133 switches the transport path between a straight transport path R4-1 that transports the medium M discharged from the first printing device 120 directly to the second printing device 140 and an inversion path R4-2 that inverts the medium M upside down by a switchback roller pair 132. Note that the intermediate transport device 130 may be omitted and the medium M may be transported directly from the first printing device 120 to the second printing device 140.

[0025] The configuration of the second printing device 140 can be the same as the configuration of the first printing device 120. For example, like the first printing device 120, the second printing device 140 has a conveying roller pair 141, a second printing unit 142, a conveying unit 143, a conveying path switching unit 144, and a switchback roller pair 145.

[0026] A plurality of pairs of transport rollers 141 are arranged inside the second printing device 140 and transport the medium M while nipping it.

[0027] The second printing unit 142 has, for example, a line head type inkjet head (not shown) for each color used for printing. The printing system 1 has a total of two printing units, the first printing unit 122 of the first printing device 120 and the second printing unit 142 of the second printing device 140, but may have only one printing unit or three or more printing units.

[0028] The transport unit 143 is disposed so as to face the second printing unit 142. The transport unit 143 transports the medium M by a belt while adsorbing the medium M.

[0029] The transport path switching unit 144 switches the transport path of the medium M on which printing has been performed by the second printing unit 142 between a straight transport path R5 continuing to the inspection device 1 and a circulating transport path R6 continuing to a reversing path R7.

[0030] The switchback roller pair 145 inverts the medium M in the inversion path R7. The medium M that has been inverted in the inversion path R7 is transported to the second printing unit 142 again.

[0031] The inspection device 1 will be described in detail later, but here, the first transport section 10, the first inspection section 20, the second transport section 30, and the second inspection section 40 will be described.

[0032] The first transport unit 10 is disposed on the upper surface side of the medium M and transports the medium M. The first transport unit 10 is, for example, an adsorption transport unit having a suction unit that sucks in air and a belt that is formed with a plurality of through holes through which the air sucked by the suction unit passes and transports the medium M that is adsorbed by the suction of air from the suction unit.

[0033] The first inspection unit 20 is disposed below the first conveying unit 10 so as to face the first conveying unit 10 vertically. The first inspection unit 20 inspects an image printed on the lower surface of the medium M being conveyed by the first conveying unit 10. For example, the first inspection unit 20 has an imaging unit such as a CIS (Contact Image Sensor) that captures the image printed on the medium M. The first inspection unit 20 is an example of a first processing unit that performs processing on the medium M. Other examples of the first processing unit include a functional printing unit that performs functional printing using special ink (stealth ink, MICR (Magnetic ink character recognition) ink, etc.) as an example of processing, a printing unit that performs printing using normal ink (KCMY color ink, etc.) as an example of processing, and a drying heater that performs drying as an example of processing.

[0034] The second conveying unit 30 is disposed on the underside of the medium M, which is on the upper and lower opposite side of the first conveying unit 10 in the conveying direction D, upstream of the first conveying unit 10. The second conveying unit 30 may be configured by inverting the orientation of the first conveying unit 10 up and down. For example, like the first conveying unit 10, the second conveying unit 30 is an adsorption conveying unit having, for example, a suction unit that sucks in air, and a belt that is formed with a plurality of through holes through which the air sucked by the suction unit passes and that conveys the medium M adsorbed by the suction of air from the suction unit.

[0035] The second inspection unit 40 is disposed so as to face the second conveying unit 30 vertically on the upper surface side of the medium M, which is the vertical opposite side of the first inspection unit 20 with respect to the medium M. The second inspection unit 40 inspects the image printed on the upper surface of the medium M being conveyed by the second conveying unit 30. For example, the second inspection unit 40 has an imaging unit such as a CIS that captures the image printed on the medium M. The second inspection unit 40 is an example of a second processing unit that performs processing on the medium M. Other examples of this second processing unit include, as with the first processing unit, a functional printing unit that performs functional printing using special ink, which is an example of processing, a printing unit that performs printing using normal ink, which is an example of processing, and a drying heater that performs drying, which is an example of processing.

[0036] In this embodiment, an example is described in which the second conveying section 30 and the second inspection section 40 (second processing section) are arranged upstream of the first conveying section 10 and the first inspection section 20 (first processing section) in the conveying direction D, but the second conveying section 30 and the second inspection section 40 may also be arranged downstream of the first conveying section 10 and the first inspection section 20 in the conveying direction D.

[0037] The images captured by the imaging units of the first inspection unit 20 and the second inspection unit 40 are subjected to image processing by a control unit 91 described later or a control unit (not shown) of the entire printing system 100, and it is determined whether the image printed on the medium M is normal or abnormal. Whether the image is normal or abnormal may be determined based on, for example, the printing accuracy and the presence or absence of errors in the printed content in comparison with manuscript data for printing. Furthermore, each of the first inspection unit 20 and the second inspection unit 40 may have multiple types of imaging units with different imaging methods.

[0038] The medium ejection device 150 has an introduction section 151 , a normal storage section 152 , and an abnormal storage section 153 .

[0039] The introduction section 151 has a plurality of conveying roller pairs 151a, a switchback roller pair 151b, and conveying path switching sections 151c and 151d.

[0040] The plurality of conveying roller pairs 151a convey the medium M while nipping it. The switchback roller pair 151b inverts the medium M in the reversing path R8-1.

[0041] The conveying path switching unit 151c switches the straight conveying path R5 that continues from the second printing device 140 through the inspection device 1 to the introduction unit 151, between a reversing path R8-1 toward the switchback roller pair 151b and a non-reversing path R8-2 that passes through the switchback roller pair 151b.

[0042] The transport path switching unit 151d switches the junction path R9, which is the junction of the reversing path R8-1 and the non-reversing path R8-2, to a normal storage path R10 leading to the normal storage section 152 and an abnormal storage path R11 leading to the abnormal storage section 153.

[0043] The normal containing section 152 has a liftable placement table 152a on which media M determined to be normal by the inspections by the first inspection section 20 and the second inspection section 40 are placed.

[0044] The abnormal storage section 153 is disposed above the normal storage section 152, and stores media M that have been determined to be abnormal by the inspections of the first inspection section 20 and the second inspection section 40.

[0045] Next, the configuration of the inspection device 1 will be described. FIG. 3 is a rear perspective view showing the inspection device 1 (in a transporting state).

[0046] FIG. 4 is a rear perspective view showing the inspection device 1 (in a jam-cleared state). 3 and 4 show the first transport section 10, the first inspection section 20, the second transport section 30, and the second inspection section 40 in detail, unlike FIG. 1 and FIGS. 5A to 5E.

[0047] As shown in FIG. 3, the inspection apparatus 1 includes the above-mentioned first conveying section 10, first inspection section 20, second conveying section 30, and second inspection section 40, as well as hanging wires 51-54, pulling wires 61-64, a first driving section 71, a power transmission section 72, driving shafts 73, 74, pulleys 75-78, a second driving section 81, a power transmission section 82, a driving shaft 83, and a pulley 84.

[0048] As shown in FIG. 2, the inspection device 1 includes a control unit 91, a memory unit 92, an interface unit 93, a first measurement unit 94, a second measurement unit 95, a lower first position detection sensor S11, a lower second position detection sensor S12, an upper first position detection sensor S21, and an upper second position detection sensor S22.

[0049] 3 has one end connected to, for example, four corners of the first conveying section 10 and the other end connected to, for example, four corners of the second conveying section 30, thereby suspending the first conveying section 10 and the second conveying section 30. The hanging wires 51 to 54 are an example of a flexible hanging member.

[0050] Here, the first conveying section 10, which is the one located above the first conveying section 10 and the first inspection section 20 and is connected to the hanging wires 51 to 54, is an example of a first hanging target. Also, the second conveying section 30, which is the one located below the second conveying section 30 and the second inspection section 40 and is connected to the hanging wires 51 to 54, is an example of a second hanging target. Note that, in this embodiment, an example of the first hanging target is the first conveying section 10, and an example of the second hanging target is the second conveying section 30, but the processing sections such as the first inspection section 20 and the second inspection section 40 may be the hanging target.

[0051] The pulling wires 61 to 64 are connected, for example, to the four corners of the first conveying section 10, and pull downward the first conveying section 10. The pulling wires 61 to 64 are an example of a flexible pulling member.

[0052] In addition, the hanging members, such as the hanging wires 51-54, and the pulling members, such as the pulling wires 61-64, are not limited to being linear and may be strip-shaped, etc., and there are no particular restrictions on the material or number of members as long as they are flexible (have flexibility).

[0053] The first driving unit 71 drives the suspension wires 51 to 54. The first driving unit 71 is, for example, an actuator such as a motor.

[0054] The power transmission unit 72 transmits the power generated by the first drive unit 71 to each of the two drive shafts 73, 74. Note that the power transmission unit 72 is, for example, a plurality of gears as shown in Figures 3 and 4, but may also be a plurality of belts as shown in Figures 5A to 5E.

[0055] The drive shafts 73, 74 are disposed to extend in the front-rear direction above the second inspection unit 40. Two suspension wires 51, 53 are hooked to one drive shaft 73, and the remaining two suspension wires 52, 54 are hooked to the other drive shaft 74.

[0056] Pulleys 75 to 78 are disposed above the positions where suspending wires 51 to are connected to first conveying section 10, and suspending wires 51 to are hooked thereon.

[0057] Therefore, when the drive shafts 73, 74 rotate by the power transmitted from the power transmission section 72, the hanging wires 51-54 can lower the first conveying section 10 and raise the second conveying section 30 to a conveying position P1 in contact with the first inspection section 20 or the second inspection section 40 as shown in Figure 3, and can raise the first conveying section 10 and lower the second conveying section 30 to a jam release position P2 separated from the first inspection section 20 or the second inspection section 40 as shown in Figure 4.

[0058] The second driving unit 81 drives the pulling wires 61 to 64. The second driving unit 81 is, for example, an actuator such as a motor.

[0059] Power transmission unit 82 transmits the power generated by second drive unit 81 to drive shaft 83. Note that power transmission unit 82 has, for example, a gear, but may have a belt as shown in Figures 5A to 5E.

[0060] The drive shaft 83 is disposed to extend in the left-right direction behind the first inspection unit 20, and the pull wires 61 to 64 are hooked to the drive shaft 83. The direction of the drive shaft 83 may be any direction. For example, in Figs. 5A to 5E, the drive shaft 83 is illustrated as extending in the front-rear direction.

[0061] A pulling wire 62 connected to the right front part of the first conveying section 10 is hooked to the pulley 84. Note that a pulley to which a pulling wire 61 connected to the left front part of the first conveying section 10 is hooked is not shown in Figures 3 and 4, but is, for example, pulley 85 shown in Figures 5A to 5E.

[0062] When the drive shaft 83 is rotated by the power transmitted from the power transmission unit 82, the pulling wires 61 to 64 can move the first conveying unit 10 downward.

[0063] Since the second drive unit 81 pulls the first transport unit 10 downward using the pulling wires 61-64, it is possible to lift the second transport unit 30 connected to the first transport unit 10 via the hanging wires 51-54. Therefore, if it is possible to move the hanging wires 51-54 so as to lower the second transport unit 30 and lift the first transport unit 10 while the driving of the second drive unit 81 is stopped, for example, by a configuration in which a weight is placed on the second transport unit 30, then it is possible to omit the first drive unit 71.

[0064] 2 has a processor (e.g., a CPU: Central Processing Unit) that functions as an arithmetic processing device, and controls each part of the inspection device 1, such as the first driving part 71 and the second driving part 81. Note that a control part (not shown) of the printing system 100 may also function as the control part 91.

[0065] The memory unit 92 may be, for example, a ROM (Read Only Memory), which is a read-only semiconductor memory in which a specific control program is pre-recorded, or a RAM (Random Access Memory), which is a semiconductor memory that can be written to and read at any time and is used as a working memory area as needed when the processor executes various control programs.

[0066] The interface unit 93 transmits and receives various information to and from external devices. For example, the interface unit 93 transmits the inspection results of the medium M to the first printing device 120, the second printing device 140, the medium ejection device 150, and the like.

[0067] The first measurement unit 94 measures the drive amount of the first drive unit 71. For example, the first measurement unit 94 is an encoder that detects the number of rotations of the output shaft of the first drive unit 71.

[0068] The second measurement unit 95 measures the drive amount of the second drive unit 81. For example, the second measurement unit 95 is an encoder that detects the number of rotations of the output shaft of the second drive unit 81.

[0069] The lower first position detection sensor S11 detects the second conveying section 30 at the intermediate position P0 as shown in FIG. 5A, which will be described later.

[0070] The lower second position detection sensor S12 detects the second conveying section 30 at the jam release position P2 as shown in FIG. 5D, which will be described later.

[0071] The upper first position detection sensor S21 detects the first conveyer 10 at the intermediate position P0 as shown in FIG. 5A.

[0072] The upper second position detection sensor S22 detects the first conveying section 10 at the jam release position P2 as shown in FIG. 5D.

[0073] Preferably, each of the first lower position detection sensor S11, the second lower position detection sensor S12, the first upper position detection sensor S21, and the second upper position detection sensor S22 is disposed at the same height.

[0074] Next, the operation of the inspection device 1 will be described. 5A to 5E are front views for explaining the lifting and lowering operations of the first transport section 10 and the second transport section 30 of the inspection device 1. In addition, in Fig. 5A to Fig. 5E, the hanging wire 53 is hidden by overlapping with the hanging wire 51 and does not appear, and the hanging wire 54 is hidden by overlapping with the hanging wire 52 and does not appear, but the reference numerals of the hanging wires 53 and 54 are shown together with the reference numerals of the hanging wires 51 and 52. Similarly, in Fig. 5A to Fig. 5E, the pulling wire 63 is hidden by overlapping with the pulling wire 61 and does not appear, and the pulling wire 64 is hidden by overlapping with the pulling wire 62 and does not appear, but the reference numerals of the pulling wires 63 and 64 are shown together with the reference numerals of the pulling wires 61 and 62.

[0075] 5A, from a state in which the lower first position detection sensor S11 detects the upper end of the second conveyor 30 at the intermediate position P0 and the upper first position detection sensor S21 detects the lower end of the first conveyor 10 at the intermediate position P0, the first drive unit 71 drives the hanging wires 51-54 by a predetermined amount to lower the first conveyor 10 and raise the second conveyor 30. Note that the first conveyor 10 can also be lowered by the second drive unit 81 driving the pulling wires 61-64 by a predetermined amount to prevent the pulling wires 61-64 from slackening. As a result, as shown in FIG. 5B, the first conveying section 10 moves to a conveying position P1 where it contacts the first inspection section 20, and the second conveying section 30 moves to a conveying position P1 where it contacts the second inspection section 40. This allows the four corners of the first conveying section 10 to be reliably in contact with the first inspection section 20, and the four corners of the second conveying section 30 to be reliably in contact with the second inspection section 40. In this manner, when the first conveying section 10 contacts the first inspection section 20 and the second conveying section 30 contacts the second inspection section 40, the hanging wires 51-54 have slacks 51a-54a. On the other hand, the pulling wires 61-64 do not have slack because they are pulling the first conveying section 10 downward to bring the first conveying section 10 into contact with the first inspection section 20.

[0076] Next, when the first conveying section 10 and the second conveying section 30 are separated from the first inspection section 20 or the second inspection section 40, the control section 91 first controls the second driving section 81 to unwind the pulling wires 61-64 to form slack 61a-64a as shown in FIG. 5C, and then controls the first driving section 71 to lift the first conveying section 10 with a delay by the hanging wires 51-54. As a result, the first conveying section 10 lifts after the pulling wires 61-64 are slackened. Since the first conveying section 10 lifts with the pulling wires 61-64 in a slack state in this way, the second driving section 81 stops driving the pulling wires 61-64 before the first driving section 71 stops driving the hanging wires 51-54, so that the slack 61a-64a of the pulling wires 61-64 may be eliminated after the lifting of the first conveying section 10 stops. Since the above-mentioned slack 51a-54a is formed in advance in the hanging wires 51-54, even if the first driving unit 71 and the second driving unit 81 start driving simultaneously to lift the first conveying unit 10, the first conveying unit 10 will not lift until the pulling wires 61-64 slacken.

[0077] As shown in Figure 5C above, when the first conveying unit 10 and the second conveying unit 30 are located at the conveying position P1 and both the hanging wires 51-54 and the pulling wires 61-64 have slack 51a-54a, 61a-64a, the first conveying unit 10 can be removed, for example for replacement or maintenance, by the user manually releasing the connection between the hanging wires 51-54 and the pulling wires 61-64.

[0078] 5C, if the slack 51a-54a of the hanging wires 51-54 and the slack 61a-64a of the pulling wires 61-64 become large, or if the slack of the hanging wires 51-54 and the pulling wires 61-64 becomes large when the first conveying unit 10 and the second conveying unit 30 are raised and lowered, the hanging wires 51-54 and the pulling wires 61-64 are likely to come into contact with other members such as the first driving unit 71, the second driving unit 81, and the power transmission units 72 and 82, or the trajectory of the first conveying unit 10 is likely to become unstable. In addition, if a strong tension acts on the hanging wires 51-54 and the pulling wires 61-64 when the first conveying unit 10 is raised and lowered, a load is applied to the hanging wires 51-54 and the pulling wires 61-64, and ultimately to the first driving unit 71 and the second driving unit 81.

[0079] Therefore, the control unit 91 may control at least one of the first drive unit 71 and the second drive unit 81 by adjusting the drive amount of the suspension wires 51-54 and the pulling wires 61-64 (the winding or unwinding amount of the pulling wires 61-64) based on the drive amount of the first drive unit 71 by the first measurement unit 94 and the drive amount of the second drive unit 81 by the second measurement unit 95 shown in Fig. 2. For example, the control unit 91 may adjust the drive speed of the first drive unit 81 when it determines that the slack amount of the suspension wires 51-54 has reached a certain level or a load is applied to the suspension wires 51-54 based on the drive amount of the first drive unit 71 by the first measurement unit 94 and the drive amount of the second drive unit 81 by the second measurement unit 95. Alternatively, the control unit 91 may adjust the drive speed of the second drive unit 81 when it determines, based on the drive amount of the first drive unit 71 by the first measuring unit 94 and the drive amount of the second drive unit 81 by the second measuring unit 95, that the amount of slack in the pulling wires 61-64 has reached a certain level or that a load is being applied to the pulling wires 61-64.

[0080] As described above, when the first transport section 10 rises to separate from the first inspection section 20 and the second transport section 30 descends to separate from the second inspection section 40, the lower second position detection sensor S12 detects the upper end of the second transport section 30 and the upper second position detection sensor S22 detects the lower end of the first transport section 10, as shown in Fig. 5D. At this time, the first transport section 10 and the second transport section 30 are in the jam release position P2 when a jam of the medium M occurs in the inspection device 1. Note that, when returning the first transport section 10 and the second transport section 30 to the transport position P1, the first drive section 71 and the second drive section 81 may start driving at the same time.

[0081] Next, in order to make it possible to remove the second conveying section 30, the control section 91 controls the first driving section 71 and the second driving section 81 to raise the first conveying section 10 further than the jam release position P2 shown in FIG. 5D and to lower the second conveying section 30 further than the jam release position P2, as shown in FIG. 5E. Then, when the second conveying section 30 comes into contact with the contacted section 96 located below and stops (removal position P3) and does not move further downward, slacks 51b to 54b are formed in the hanging wires 51 to 54. This allows the second conveying section 30 to be removed, for example, for replacement or maintenance, by manually releasing the connection with the hanging wires 51 to 54 by the user. The contacted section 96 may be, for example, a plate material or a block material with a horizontal upper surface.

[0082] In the present embodiment described above, the inspection device (an example of a medium conveying mechanism) 1 comprises a first conveying unit 10 that conveys the medium M, a first inspection unit (an example of a first processing unit) 20 that is arranged to face the first conveying unit 10 in the vertical direction and performs processing on the medium M, flexible hanging wires (an example of a hanging member) 51-54 that are connected to the first conveying unit (an example of a first hanging target) 10, which is the upper one of the first conveying unit 10 and the first inspection unit 20, and suspend the first conveying unit 10, and flexible pulling wires 61-64 (an example of a pulling member) that pull the first conveying unit 10 downward.

[0083] As a result, when the first conveying unit 10 is lowered so as to contact the first inspection unit 20, the first conveying unit 10 can be reliably contacted with the first inspection unit 20 not only by the hanging wires 51-54 that hang the first conveying unit 10 but also by the pulling wires 61-64 that pull the first conveying unit 10 downward. Furthermore, if the pulling wires 61-64 have no slack or only slight slack when the first conveying unit 10 is raised or lowered, the trajectory of the first conveying unit 10 can be stabilized. Thus, in this embodiment, the first conveying unit 10 (an example of a first suspended target) that is located above the first conveying unit 10 and the first inspection unit 20 that face each other in the vertical direction can be raised and lowered with high accuracy. As a result, as shown in FIG. 5B, it is possible to prevent a decrease in inspection accuracy (processing accuracy) during inspection (processing) when the first conveying unit 10 (and the second conveying unit 30) and the first inspection unit 20 (and the second inspection unit 40) are in contact with each other.

[0084] In the present embodiment, the inspection device 1 further includes a second transport unit 30 disposed on the lower side, which is the vertically opposite side of the first transport unit 10 with respect to the medium M, on the upstream side (an example of the upstream side or downstream side) of the first transport unit 10 in the transport direction D of the medium M, and a second inspection unit (an example of a second processing unit) 40 disposed on the lower side, which is the vertically opposite side of the first inspection unit 20 with respect to the medium M, so as to face the second transport unit 30 in the vertical direction, and which performs processing on the medium M. The hanging wires 51 to 54 are further connected to the second transport unit (an example of a second hanging target) 30, which is one of the second transport unit 30 and the second inspection unit 40 located below, and hang the second transport unit 30, so that when one of the first transport unit 10 and the second transport unit 30 is raised, the other is lowered.

[0085] This allows the first transport section 10 and the second transport section 30 to be raised and lowered using a single first drive section 71. Furthermore, by stabilizing the trajectory of the first transport section 10 when it is raised and lowered using the second drive section 81 as described above, it is also possible to stabilize the trajectory of the second transport section 30 connected to the first transport section 10 via the hanging wires 51-54 when it is raised and lowered. Therefore, the first transport section 10 and the second transport section 30 can be raised and lowered with high accuracy using a simple configuration.

[0086] In this embodiment, the inspection device 1 further includes a first driving unit 71 that drives the hanging wires 51-54, a second driving unit 81 that drives the pulling wires 61-64, and a control unit 91 that controls the first driving unit 71 and the second driving unit 81. The hanging wires 51-54 have slacks 51a-54a when the first conveying unit 10 is in contact with the other of the first conveying unit 10 and the first inspection unit 20 that is located below. The control unit 91 controls the first driving unit 71 and the second driving unit 81 to slacken the pulling wires 61-64 and then lift the first conveying unit 10 by the hanging wires 51-54.

[0087] By having the slacks 51a-54 in the hanging wires 51 in this manner, it is possible to prevent a load from being applied to the hanging wires 51-54 when the first conveying unit 10 is in contact with the first inspection unit 20. Furthermore, by raising the first conveying unit 10 while the pulling wires 61-64 have the slacks 61a-64a, a strong tension is applied to the pulling wires 61-64, and it is possible to prevent a load from being applied to the pulling wires 61-64 and, ultimately, the second driving unit 81.

[0088] In the present embodiment, the inspection device 1 further includes a first measurement unit 94 that measures the drive amount of the first drive unit 71 and a second measurement unit 95 that measures the drive amount of the second drive unit 81. The control unit 91 adjusts the drive amount of at least one of the first drive unit 71 and the second drive unit 81 based on the drive amount of the first drive unit 71 and the drive amount of the second drive unit 81.

[0089] This prevents a discrepancy between the actual drive amount of the first drive unit 71 and the second drive unit 81 and the desired drive amount corresponding to the control signal of the control unit 91 from causing the hanging wires 51-54 and the pulling wires 61-64 to slacken significantly and come into contact with other components such as the first drive unit 71, the second drive unit 81, and the power transmission units 71, 82, or from acting on the hanging wires 51-54 and the pulling wires 61-64, thereby placing a load on the hanging wires 51-54 and the pulling wires 61-64 and ultimately the first drive unit 71 and the second drive unit 81, or from causing the trajectory of the first conveying unit 10 to become unstable when it is raised and lowered.

[0090] In addition, in this embodiment, the control unit 91 drives the hanging wires 51-54 and the pulling wires 61-64 by controlling the first drive unit 71 and the second drive unit 81 so that the first conveying unit 10 and the first inspection unit 20 are in contact and the second conveying unit 30 and the second inspection unit 40 are in contact when the first conveying unit 10 and the second conveying unit 30 transport the medium M and when the first inspection unit 20 and the second inspection unit 40 inspect (process) the medium M, and so that the first conveying unit 10 and the first inspection unit 20 are separated and the second conveying unit 30 and the second inspection unit 40 are separated when a jam of the medium M is released.

[0091] This allows the first conveying section 10 and the second conveying section 30, and the first inspection section 20 and the second inspection section 40, which are in contact when the medium M is conveyed and inspected (processed), to be separated simultaneously when the jam of the medium M is cleared, allowing not only jammed medium M that is between the first conveying section 10 and the first inspection section 20 (or between the second conveying section 30 and the second inspection section 40) but also jammed medium M that straddles the first conveying section 10 and the second conveying section 30 to be smoothly removed.

[0092] In addition, in this embodiment, in order to enable removal of the second conveying section 30, the control section 91 controls the first driving section 71 to drive the hanging wires 51-54 so that the hanging wires 51-54 lower the second conveying section 30 and, after the second conveying section 30 comes into contact with the contactable section 96 located below and stops, the hanging wires 51-54 become slack (have slack 51b-54b).

[0093] This makes it possible to remove the second conveying section 30 by slackening the hanging wires 51-54, and also makes it possible to remove the second conveying section 30 in a stable state in which the second conveying section 30 is in contact with the contacted section 96.

[0094] <Other embodiments> Inspection device 2, which is an example of a transport mechanism of another embodiment, the method of removing first transport unit 10, which is an example of a first hanging target, is different from inspection device 1 of the above-mentioned embodiment, and in this other embodiment, a new method of fixing first transport unit 10 and second transport unit 30 during transportation of inspection device 2 will be described. Other matters can be the same as in the above-mentioned embodiment, so common reference numerals are used for each part and description will be omitted.

[0095] FIG. 6 is a front perspective view showing the inspection device 2 (in a transporting state). FIG. 7 is a front perspective view showing a part of the inspection device 2 (in a removed state).

[0096] FIG. 8 is a front perspective view showing a part of the inspection device 2 (in a transported and fixed state). Note that the up-down direction, left-right direction, and front-rear direction shown in Figures 6 to 8 and Figures 9A and 9B described later are merely directions for the convenience of explanation, but for example, the up-down direction is the vertical direction, and the left-right direction and front-rear direction are horizontal directions.

[0097] 6 to 8 show the inspection device 2 together with the housing 210, which was omitted in the above-described embodiment. Also, the pulling wires 61 to 64 are omitted from Fig. 6 to 8. Note that some of the suspension wires 51 to 54 are hidden by the front side plate 211 etc. and cannot be seen.

[0098] 6, housing 210 has front side plate 211 provided at the front end of housing 210, rear side plate 212 provided at the rear end of housing 210, and storage section 213. Housing 210 accommodates the above-mentioned first transport section 10 (an example of a first suspended target), first inspection section 20 (an example of a first processing section), second transport section 30 (an example of a second suspended target), second inspection section 40 (an example of a second processing section), etc.

[0099] The storage section 213 is disposed between an upper portion of the front plate 211 and an upper portion of the rear plate 212, and stores the downstream fixed shafts 221, 222, the downstream fixed plates 223, 224, the upstream fixed shafts 231, 232, and the upstream fixed plate 233. Note that, when stored in the storage section 213, the downstream fixed shafts 221, 222 and the upstream fixed shafts 231, 232 may have their front ends detachably fixed to the front plate 211 and their rear ends detachably fixed to the rear plate 212, for example, by screws.

[0100] The downstream side fixed shafts 221, 222 and the downstream side fixed plates 223, 224 are detachably attached to the housing 210 by, for example, screws at a first attachment position P11 (see FIG. 7 (FIG. 9A)) for removing the first transport unit 10, and at a second attachment position P12 (see FIG. 8 (FIG. 9B)) for fixing the first transport unit 10 so as not to move when the inspection device 2 is transported. Note that the first attachment position P11 may be the same position as the second attachment position P12, but here, it is a position different from the second attachment position P12 (for example, a position below the second attachment position P12). In addition, the transportation of the inspection device 2 is, for example, transportation from factory shipment to delivery to the user, but may also be transportation associated with a change in the location of the inspection device 2. In addition, the downstream side fixed shafts 221, 222 are an example of a detachable member. The detachable members are not limited to two cylindrical shaft members such as the downstream fixed shafts 221, 222, but may be of any shape and any number. Furthermore, if the downstream fixed shafts 221, 222 can be directly attached to the housing 210 (the front plate 211 and the rear plate 212), the downstream fixed plates 223, 224 can be omitted.

[0101] 7, one downstream fixed plate 223 is fixed to the front plate 211 at a first attachment position P11, and the other downstream fixed plate 223 is fixed to the rear plate 212 at the first attachment position P11. The downstream fixed shafts 221, 222 are at the same height and spaced apart in the left-right direction, and have their front ends fixed to the downstream fixed plate 223 and their rear ends fixed to the downstream fixed plate 224 at the first attachment position P11 in the lifting and lowering path of the first transport section 10. The first transport section 10 is placed on the downstream fixed shafts 221, 222 at the first attachment position P11, for example, when removed for replacement or maintenance.

[0102] 8, one downstream fixed plate 223 is fixed to the front plate 211 at the second mounting position P12, and the other downstream fixed plate 224 is fixed to the rear plate 212 at the second mounting position P12. The downstream fixed shafts 221, 222 are at the same height and spaced apart in the left-right direction, and penetrate the first conveying unit 10 at the second mounting position P12, with their front ends fixed to the downstream fixed plate 223 and their rear ends fixed to the downstream fixed plate 224. The downstream fixed shafts 221, 222 at the second mounting position P12 penetrate the first conveying unit 10 to immobilize the first conveying unit 10, for example, when the inspection device 2 is transported and fixed.

[0103] 9B, the upstream fixed shafts 231, 232 and the upstream fixed plate 233 are detachably attached to the housing 210 by, for example, screws at an attachment position where the second conveying unit 30 is fixed so as not to move when the inspection device 2 is transported. The upstream fixed plate 233 is a single member, unlike the downstream fixed plates 223, 224, and the upstream fixed shafts 231, 232 are fixed at the same height and spaced apart in the left-right direction, with their front ends fixed to the upstream fixed plate 233 and their rear ends fixed to the rear plate 212. If the upstream fixed shafts 231, 232 can be directly attached to the housing 210 (the front plate 211 and the rear plate 212), the upstream fixed plate 233 can also be omitted.

[0104] Here, the second conveying section 30 is placed on the contacted section 96 of the embodiment described above when being replaced, but may be placed on the upstream fixed shafts 231, 232 when the upstream fixed shafts 231, 232 and the upstream fixed plate 233 are attached to the attachment position for replacing the second conveying section 30. In this case, the upstream fixed shafts 231, 232 function as an example of the contacted section described above. This allows the second conveying section 30 to be removed with a simple configuration using the upstream fixed shafts 231, 232 used to fix the second conveying section 30 so that it cannot move.

[0105] Next, the operation of the inspection device 2 will be described. 9A and 9B are front views for explaining the lifting and lowering operations of the first transport unit 10 and the second transport unit 30 of the inspection device 2. In addition, in Fig. 9A and Fig. 9B, the hanging wire 53 is hidden by the hanging wire 51 and does not appear, and the hanging wire 54 is hidden by the hanging wire 52 and does not appear, but the reference characters of the hanging wires 53 and 54 are shown together with the reference characters of the hanging wires 51 and 52. Similarly, in Fig. 9A and Fig. 9B, the pulling wire 63 is hidden by the pulling wire 61 and does not appear, and the pulling wire 64 is hidden by the pulling wire 62 and does not appear, but the reference characters of the pulling wires 63 and 64 are shown together with the reference characters of the pulling wires 61 and 62.

[0106] First, before the downstream fixed shafts 221, 222 are attached to the housing 210 at the first mounting position P11 as shown in FIG. 7, the first drive unit 71 drives the hanging wires 51-54 by a predetermined amount under the control of the control unit 91 shown in FIG. 2, thereby raising the first conveying unit 10 above the downstream fixed shafts 221, 222 at the first mounting position P11.

[0107] 9A, in order to enable removal of the first conveyance unit 10, the control unit 91 controls the first drive unit 71 so that the hanging wires 51-54 lower the first conveyance unit 10 from above the downstream fixed shafts 221, 222 fixed at the first attachment position P11. When the first conveyance unit 10 comes into contact with the downstream fixed shafts 221, 222 located below and stops (removal position P4) and does not move any further down, slacks 51c-54c are formed in the hanging wires 51-54. In addition, the control unit 91 controls the second drive unit 81 so that slacks 61b-64b are formed in the pulling wires 61-64 when the first conveyance unit 10 comes into contact with the downstream fixed shafts 221, 222 and stops. With the hanging wires 51-54 and the pulling wires 61 in this slack state, the user manually releases the connection of the first conveying unit 10 to the hanging wires 51-54 and the pulling wires 61-64, thereby enabling removal of the first conveying unit 10 for, for example, replacement or maintenance. Note that when the positioning of the first conveying unit 10 and the first inspection unit 20 is performed by inserting a pin provided on one of the first conveying unit 10 and the first inspection unit 20 and extending in the vertical direction into a hole provided on the other, the removal position P4 of the first conveying unit 10 should be the position where the pin comes out of the hole.

[0108] Next, before the downstream fixed shafts 221, 222 are attached to the housing 210 at the second mounting position P12 as shown in FIG. 8, the control unit 91 controls the first drive unit 71 and the second drive unit 81 so that the first conveying unit 10 and the second conveying unit 30 move up and down to the transport fixed position P5 fixed to the downstream fixed shafts 221, 222 at the second mounting position P12.

[0109] 9B, the downstream fixed shafts 221, 222 are attached to the second attachment position P12 that fixes the first conveying section 10 immovably at the transport fixing position P5, and the upstream fixed shafts 231, 232 are attached to the second attachment position P12 that fixes the second conveying section 30 immovably at the transport fixing position P5, and the inspection device 2 is transported in this state. When the positioning with the first inspection section 20 or the second inspection section 40 is performed by inserting the above-mentioned pins into the holes, the removal position P5 of the first conveying section 10 and the second conveying section 30 is preferably a position where the pins come out of the holes.

[0110] In the other embodiments described above, the same effects can be obtained for matters similar to those of the above-mentioned embodiment, such as the ability to raise and lower the first conveying section 10 (an example of a first hanging target) with high precision.

[0111] In addition, in this embodiment, the inspection device 2 further includes downstream fixed shafts 221, 222, which are an example of a detachable member that is detachably attached to the housing 210 at the first attachment position P11, and the control unit 91 controls the first drive unit 71 to drive the hanging wires 51-54 so that the hanging wires 51-54 lower the first conveying unit 10 from above the downstream fixed shafts 221, 222, and until the hanging wires 51-54 slacken (have slack 51c-54c) after the first conveying unit 10 comes into contact with the downstream fixed shafts 221, 222 and stops, in order to enable removal of the first conveying unit 10, which is an example of the first suspended target.

[0112] As a result, compared to a mode in which the first conveying unit 10 is removed while in contact with the first inspection unit 20, the first conveying unit 10 can be easily removed without contacting the first inspection unit 20. Therefore, when replacement or maintenance work of the first conveying unit 10 is performed while the first conveying unit 10 and the first inspection unit 20 are in contact with each other, there is a possibility that the setting position of the first inspection unit 20 may vary based on the user's work. However, when replacement or maintenance work of the first conveying unit 10 is performed while the first conveying unit 10 and the second inspection unit 20 are not in contact with each other, the above-mentioned variation can be avoided, and it is possible to avoid a decrease in the inspection accuracy of the first inspection unit 20.

[0113] In addition, in this embodiment, the downstream fixed shafts 221, 222, which are an example of a detachable member, are detachably attached to the housing 210 at a second attachment position P12 that fixes the first conveying section 10 so that it cannot move, instead of at the first attachment position P11.

[0114] This makes it possible to fix the first transport unit 10 immovably with a simple configuration using the downstream fixed shafts 221, 222 used for removing the first transport unit 10. Therefore, by fixing the downstream fixed shafts 221, 222 to the second attachment position P12, the downstream fixed shafts 221, 222 can be used even when transporting the inspection device 2, which requires fixing, and also facilitates easy replacement when replacing the first transport unit 10.

[0115] The present invention is not limited to the above-described embodiment as it is, and the components can be modified and embodied without departing from the gist of the invention in the implementation stage. In addition, various inventions can be formed by appropriate combinations of the multiple components disclosed in the above-described embodiment. For example, all the components shown in the embodiment may be appropriately combined. Of course, various modifications and applications are possible without departing from the spirit of the invention. The invention described in the claims at the time of filing of this application is appended below.

[0116] [Appendix 1] a first transport unit that transports the medium; a first processing unit that is disposed so as to face the first transport unit in the vertical direction and that processes the medium; a flexible hanging member connected to a first hanging object, which is one of the first transport unit and the first processing unit located above, and suspending the first hanging object; a flexible pulling member that pulls the first suspended object downward; A medium transport mechanism comprising:

[0117] [Appendix 2] a second transport section disposed upstream or downstream of the first transport section in a transport direction of the medium, the second transport section being disposed vertically opposite the first transport section with respect to the medium; The first processing unit is disposed on the opposite side of the medium from the second transport unit in the vertical direction, and the second processing unit performs processing on the medium. The hanging member is further connected to a second hanging target, which is one of the second transport unit and the second processing unit located below, and hangs the second hanging target, thereby raising one of the first hanging target and the second hanging target and lowering the other. 2. The medium transport mechanism according to claim 1.

[0118] [Appendix 3] A first drive unit that drives the hanging member; A second drive unit that drives the tension member; A control unit that controls the first drive unit and the second drive unit, the hanging member has slack when the first hanging target is in contact with the other of the first transport unit and the first processing unit located below, The control unit controls the first driving unit and the second driving unit to slacken the tension member and then lift the first suspended object by the hanging member. 3. A medium transport mechanism according to claim 1 or 2.

[0119] [Appendix 4] A first measurement unit that measures the drive amount of the first drive unit; a second measurement unit that measures the drive amount of the second drive unit, The control unit adjusts a drive amount of at least one of the first drive unit and the second drive unit based on a drive amount of the first drive unit and a drive amount of the second drive unit. 4. The medium transport mechanism according to claim 3.

[0120] [Appendix 5] A first drive unit that drives the hanging member; A second drive unit that drives the tension member; A control unit that controls the first drive unit and the second drive unit, The control unit drives the hanging member and the pulling member by controlling the first driving unit and the second driving unit so that the first conveying unit and the first processing unit come into contact with each other and the second conveying unit and the second processing unit come into contact with each other when the first conveying unit and the second conveying unit convey the medium and when the first processing unit and the second processing unit process the medium, and so that the first conveying unit and the first processing unit are separated from each other and the second conveying unit and the second processing unit are separated from each other when a jam of the medium is released. 3. The medium transport mechanism according to claim 2.

[0121] [Appendix 6] A first drive unit that drives the hanging member; A control unit that controls the first driving unit, The control unit controls the first driving unit so that the hanging member lowers the second suspended object, and drives the hanging member until the second suspended object comes into contact with a contacted portion located below and stops, in order to enable removal of the second suspended object. 3. The medium transport mechanism according to claim 2.

[0122] [Appendix 7] a detachable member detachably attached to the housing at a first attachment position; A first drive unit that drives the hanging member; A control unit that controls the first driving unit, The control unit controls the first driving unit so that the hanging member lowers the first hanging target from above the detachable member, and drives the hanging member until the hanging member loosens after the first hanging target comes into contact with the detachable member and stops, in order to enable removal of the first hanging target. 3. A medium transport mechanism according to claim 1 or 2.

[0123] [Appendix 8] The detachable member is detachably attached to the housing at a second attachment position that fixes the first suspended object immovably, instead of at the first attachment position. 8. The medium transport mechanism according to claim 7. [Explanation of symbols]

[0124] 1,2 Inspection device (an example of a transport mechanism) 10 First conveying section (an example of a first hanging target) 20 First inspection unit (an example of a first processing unit) 30 Second conveying section (an example of a second hanging object) 40 Second inspection unit (an example of a second processing unit) 51-54 Suspension wire (an example of a suspension member) 51a, 52a, 53a, 54a Looseness 51b, 52b, 53b, 54b Looseness 51c, 52c, 53c, 54c loose 61-64 Pulling wire (an example of a pulling member) 61a, 62a, 63a, 64a Looseness 61b, 62b, 63b, 64b Looseness 71 First Drive Unit 72 Power transmission section 73,74 Drive shaft 75~78 Pulley 81 Second Drive Unit 82 Power transmission section 83 Drive shaft 84,85 Pulley 91 Control Unit 92 Memory section 93 Interface section 94 First Measurement Section 95 Second Measurement Section 96 Contacted part 100 Printing System 110 Media supply device 120 1st printing device 130 Intermediate conveying device 140 2nd printing device 150 Media ejector 210 Cabinet 211 Front side plate 212 Back side plate 213 Storage area 221, 222 Downstream fixed shaft (an example of a detachable member) 223,224 Downstream fixing plate 231,232 Upstream fixed shaft 233 Upstream side fixing plate M medium P0 intermediate position P1 Delivery position P2 Jam release position P3 Removal position P4 Removal position P5 Transport fixed position P11 1st mounting position P12 Second mounting position R1, R4-1, R5 Straight transport route R2, R6 Circulation transport route R3, R4-2, R7, R8-1 Reverse path R8-2 Non-inverting path R9 Merging route R10 Normal accommodation route R11 Abnormal containment route S11 Lower first position detection sensor S12 Lower second position detection sensor S21 Upper first position detection sensor S22 Upper second position detection sensor

Claims

1. A first transport unit that transports the medium; a first processing unit that is disposed so as to face the first transport unit in a vertical direction and that processes the medium; a flexible hanging member connected to a first hanging object, which is one of the first transport unit and the first processing unit located above, and suspending the first hanging object; a flexible pulling member that pulls the first suspended object downward; A medium transport mechanism comprising:

2. a second transport section disposed upstream or downstream of the first transport section in a transport direction of the medium, the second transport section being disposed vertically opposite the first transport section with respect to the medium; a second processing unit that is disposed opposite the first processing unit in the up-down direction to the second transport unit and processes the medium; The hanging member is further connected to a second hanging target, which is one of the second transport unit and the second processing unit located below, and hangs the second hanging target, so that when one of the first hanging target and the second hanging target is raised, the other is lowered.

2. The medium transport mechanism of claim 1.

3. A first drive unit that drives the hanging member; A second drive unit that drives the tension member; A control unit that controls the first drive unit and the second drive unit, the hanging member has slack when the first hanging target is in contact with the other of the first transport unit and the first processing unit located below, The control unit controls the first driving unit and the second driving unit to slacken the tension member and then lift the first suspended object by the hanging member.

3. The medium transport mechanism according to claim 1 or 2.

4. A first measurement unit that measures a drive amount of the first drive unit; a second measurement unit that measures the drive amount of the second drive unit, The control unit adjusts a drive amount of at least one of the first drive unit and the second drive unit based on a drive amount of the first drive unit and a drive amount of the second drive unit.

4. The medium transport mechanism according to claim 3.

5. A first drive unit that drives the hanging member; A second drive unit that drives the tension member; A control unit that controls the first drive unit and the second drive unit, The control unit drives the hanging member and the pulling member by controlling the first driving unit and the second driving unit so that the first transport unit and the first processing unit come into contact with each other and the second transport unit and the second processing unit come into contact with each other when the first transport unit and the second transport unit transport the medium and when the first processing unit and the second processing unit process the medium, and so that the first transport unit and the first processing unit are separated from each other and the second transport unit and the second processing unit are separated from each other when a jam of the medium is released.

3. The medium transport mechanism according to claim 2.

6. A first drive unit that drives the hanging member; A control unit that controls the first drive unit, The control unit controls the first driving unit so that the hanging member lowers the second hanging target, and drives the hanging member until the second hanging target comes into contact with a contacted portion located below and stops, in order to enable removal of the second hanging target.

3. The medium transport mechanism according to claim 2.

7. a detachable member that is detachably attached to a housing that accommodates the first transport unit and the first processing unit at a first attachment position; A first drive unit that drives the hanging member; A control unit that controls the first drive unit, The control unit controls the first driving unit so that the hanging member lowers the first hanging target from above the detachable member, and drives the hanging member until the hanging member loosens after the first hanging target comes into contact with the detachable member and stops, in order to enable removal of the first hanging target.

3. The medium transport mechanism according to claim 1 or 2.

8. The detachable member is detachably attached to the housing at a second attachment position where the first suspended object is immovably fixed, instead of at the first attachment position.

8. The medium transport mechanism of claim 7.

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