Reading member mounting method, mounting mechanism, and image reading device

Abstract

To enable easy replacement of two or more reading members through one access opening.SOLUTION: In an image reader, multiple reading members (scanners 210, 220) which read an image of a recording medium (a sheet P) are disposed at an outer periphery of a support member(a rotary drum 31), which supports the recording medium on its peripheral surface and transports the recording medium, in a radial form centered on a rotation axis of the support member. The image reader has: one access opening 700 through which the reading members may be carried into the device to be set at predetermined positions of the outer periphery of the support member; and a hanging mechanism which has wire parts (a first wire part 3101 and a second wire part 3102) for hanging the reading member (the scanner 210) carried into the access opening 700 and hangs and places the reading member at a predetermined height position at the outer periphery of the support member with the wire parts.SELECTED DRAWING: Figure 3A

Description

[Technical Field]

[0001] The present invention relates to a method for attaching a reading member, an attachment mechanism, and an image reading device. [Background technology]

[0002] An inkjet recording device is equipped with multiple droplet ejection units (C, M, Y, K) that eject ink around a rotating drum that transports the recording medium (see Figures 1 and 2 of Patent Document 1). An image reading device using an inline scanner is arranged around the rotating drum downstream of these droplet ejection units. This image reading device inspects the density unevenness and ink ejection state of the image formed on the recording medium, and optimally adjusts the ink ejection state, etc. based on the inspection results.

[0003] A long, integrated scanner (e.g., B2 width) that is continuous across the width of the recording medium is expensive. Therefore, it has been common practice to arrange multiple low-cost medium- to short-length (e.g., A3 width) scanners in two or more positions, offset in the conveyance direction of the rotating drum (e.g., in a staggered arrangement). The images scanned by the multiple scanners are then joined together to obtain a seamless document image.

[0004] The scanners are installed so that they can be replaced through an access opening formed on the front side of the machine. However, creating an access opening for each scanner increases the total opening area, making the machine larger. While it is possible to create fewer access openings than the number of scanners, or to make the access openings themselves smaller, this would result in the problem of making it difficult to replace scanners. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to enable easy interchange of two or more reading members through a single access opening. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the image reading device of the present invention is an image reading device in which a plurality of reading members for reading images on a recording medium are arranged radially around the rotation axis of a carrier member around the outer periphery of the carrier member, the image reading device being characterized by having one access opening through which the plurality of reading members can be introduced, and a lifting mechanism having a cable section for lifting the reading members introduced into the access opening, and using the cable section to lift and position the reading members at a predetermined height on the outer periphery of the carrier member.

[0007] According to the present invention, two or more reading members can be easily exchanged through a single access opening. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram of an inkjet recording apparatus according to the present invention. [Figure 2A] FIG. [Figure 2B] FIG. [Figure 3A] FIG. 2 is a side view of the lifting mechanism of the scanner. [Figure 3B] FIG. 2 is a plan view of the lifting mechanism of the scanner. [Figure 4A] FIG. 10 is a diagram of the tensioner of the lifting mechanism. [Figure 4B] (a) Unlocked state of the tensioner, (b) locked state, and (c) tensioner lock. [Figure 5] FIG. [Figure 6] 10 is a diagram showing the relationship between the amount of winding of the lifting mechanism and the fluctuation in height of the shaft member. FIG. [Figure 7A] 10A and 10B are diagrams illustrating a lifting process of the upstream scanner. [Figure 7B] 10A and 10B are diagrams illustrating a lifting process of the upstream scanner. [Figure 7C] 10A and 10B are diagrams illustrating a lifting process of the upstream scanner. [Figure 7D]10A and 10B are diagrams illustrating a lifting process of the upstream scanner. [Figure 7E] 10A and 10B are diagrams illustrating a lifting process of the upstream scanner. [Figure 7F] 10A and 10B are diagrams illustrating a lifting process of the upstream scanner. DETAILED DESCRIPTION OF THE INVENTION

[0009] (●Inkjet recording device) An embodiment of the present invention will now be described with reference to the accompanying drawings. Fig. 1 is a schematic diagram of an inkjet recording apparatus 1 as an apparatus for ejecting liquid. The inkjet recording apparatus 1 includes an input section 10 for inputting paper P as a recording medium onto which the liquid is to be applied, a pre-processing section 20, a printing section 30, a drying section 40, an output section 50, and a reversing mechanism section 60.

[0010] The inkjet recording device 1 applies (coats) pretreatment liquid to paper P transported (supplied) from the transport section 10 as needed in the pretreatment section 20, which is a pretreatment means, applies liquid in the printing section 30 to perform the required printing, dries the liquid adhering to the paper P in the drying section 40, and then discharges the paper P to the transport section 50.

[0011] The loading section 10 includes loading trays (lower loading tray 11A, upper loading tray 11B) that accommodate multiple sheets of paper P, and feeding devices 12A and 12B that separate and feed the sheets of paper P one by one from the loading trays, and supplies the sheets of paper P to the pre-processing section 20.

[0012] The pre-treatment unit 20 includes an application unit 21 which is a treatment liquid application unit that applies a treatment liquid to the printing surface of the paper P, the treatment liquid having the effect of agglomerating the coloring material of the ink and preventing show-through, for example.

[0013] The printing unit 30 includes a rotating drum 31, which is a support member (rotating body) that supports the paper P on its circumferential surface and rotates, and a droplet ejection unit 32 that ejects liquid toward the paper P supported on the rotating drum 31.

[0014] The printing section 30 also includes a transfer cylinder 34 that receives the paper P sent from the pre-processing section 20 and transfers the paper P between it and the rotating drum 31, and a transfer cylinder 35 that receives the paper P transported by the rotating drum 31 and transfers it to the drying section 40.

[0015] The paper sheet P transported from the pre-processing unit 20 to the printing unit 30 has its leading edge gripped by a gripping means (paper gripper) provided on the transfer drum 34, and is transported as the transfer drum 34 rotates. The paper sheet P transported by the transfer drum 34 is delivered to the rotating drum 31 at a position opposite the rotating drum 31.

[0016] A gripping means (paper gripper) is also provided on the surface of the rotating drum 31, and the leading edge of the paper P is gripped by the gripping means (paper gripper). A plurality of suction holes are formed in a dispersed manner on the surface of the rotating drum 31, and the suction means generates a suction airflow that flows inward from the required suction holes of the rotating drum 31.

[0017] Then, the paper P transferred from the transfer drum 34 to the rotating drum 31 has its leading edge gripped by the paper gripper, and is adsorbed and supported on the rotating drum 31 by the suction airflow of the suction means, and is transported as the rotating drum 31 rotates.

[0018] The droplet discharge section 32 is provided with four droplet discharge units 33A to 33D that discharge droplets. These droplet discharge units 33A to 33D are arranged at equal intervals along the upper outer periphery of the rotating drum 31 and are symmetrical in FIG.

[0019] The droplet discharge unit 33A can discharge cyan (C) liquid, the droplet discharge unit 33B can discharge magenta (M) liquid, the droplet discharge unit 33C can discharge yellow (Y) liquid, and the droplet discharge unit 33D can discharge black (K) liquid. In addition, droplet discharge units that discharge special liquids such as white and gold (silver) liquid can also be used.

[0020] The ejection operation of each of the droplet ejection units 33A to 33D of the droplet ejection section 32 is controlled by a drive signal corresponding to the printing information. When the paper P carried on the rotating drum 31 passes through an area facing the droplet ejection section 32, liquid of each color is ejected from the ejection units 33, and an image corresponding to the printing information is printed.

[0021] The paper P to which liquid has been applied in the droplet ejection section 32 is passed from the rotating drum 31 to the transfer drum 35, and the paper P received by the transfer drum 35 is passed to the conveying mechanism section 41 and transported to the drying section (heating section) 40.

[0022] The drying unit 40 dries the liquid that has been applied to the paper P by the printing unit 30. This dries the liquid, such as water, in the liquid, causing the colorant contained in the liquid to be fixed on the paper P, and also suppressing curling of the paper P.

[0023] The reversing mechanism 60 is a mechanism that reverses the paper P by a switchback method when performing double-sided printing on the paper P that has passed through the drying unit 40. The reversed paper P is sent back upstream of the transfer drum 34 through the conveying path 61 of the printing unit 30.

[0024] The discharge section 50 includes a discharge tray 51 on which a plurality of sheets P are stacked, and a sheet conveying device 502. The sheets P conveyed through the reversing mechanism section 60 are sequentially stacked and held on the stack section 501.

[0025] (●Printing Department) Next, we will explain the printing unit 30. Fig. 2A is an enlarged view of the printing unit 30 in Fig. 1. Fig. 2B is a plan view of the image reading device disposed downstream in the paper transport direction of the droplet ejection unit 32 of the printing unit 30, as seen from the outer periphery of the rotating drum.

[0026] Four droplet ejection units 33A to 33D that eject ink of four colors (C, M, Y, K) are arranged in the droplet ejection section 32. Each unit 33A to 33D has a plurality of heads that eject liquid arranged in a staggered pattern on a head mounting member. It is also possible to arrange a single row of heads on the head mounting member instead of in a staggered pattern.

[0027] Two scanners 210, 220 serving as reading members of the image reading device are disposed downstream in the paper transport direction from the droplet ejection unit 32. The axial extensions of the scanners 210, 220 are directed toward the center O of the rotating drum 31. Therefore, the scanners 210, 220 are arranged radially from the rotation axis of the rotating drum 31, and are disposed equidistant from the circumferential surface of the rotating drum 31. It is also possible to dispose three or more scanners.

[0028] The scanner 210 on the upstream side in the conveying direction is disposed at an angle of approximately 30° with respect to the horizontal line. In contrast, the scanner 220 on the downstream side in the conveying direction is disposed horizontally. The two scanners 210, 220 each have a line sensor that reads the image recorded on the paper P line by line, an imaging lens, and multiple illumination devices.

[0029] The scanners 210 and 220 inspect the density unevenness and ink discharge state of the image formed on the paper P, and the ink discharge state etc. are optimally adjusted based on the inspection results. The image inspection is performed by printing a predetermined test chart on the paper P and based on the print results.

[0030] In this embodiment, the scanners 210 and 220 have a relatively short, cost-effective A3 width as shown in FIG. 2B, and are arranged offset from each other in the paper transport direction. The two scanners 210 and 220 are arranged in the axial center of the rotating drum 31, overlapping partially in the paper transport direction. By linking the images obtained from the two scanners 210 and 220, it is possible to read images up to B2 width. When three or more scanners are arranged, linking the images obtained from the scanners also makes it possible to read images wider than B2 width.

[0031] (●Scanner lifting mechanism) As shown in Fig. 2A, the lifting mechanism for lifting the upstream scanner 210 is disposed immediately above the scanner 210. This lifting mechanism lifts the upstream scanner 210, which has been carried in through an access opening 700, to a predetermined height position as shown in Fig. 2A. The access opening 700 is shared with the downstream scanner 220 to reduce the size of the device.

[0032] 2A, the access opening 700 can be formed on the front side of the housing 800 of the rotating drum 31 at approximately the same height as the center O of the rotating drum 31. The access opening 700 is formed further downstream than the most downstream droplet discharge unit 33D, and opens in the same direction as the axial direction of the rotating drum 31 (toward the front in FIG. 2A).

[0033] The size of the access opening 700 can be formed into a horizontally elongated rectangular shape with the minimum necessary size to allow the scanners 210 and 220 to be carried in. However, as will be described later, it is desirable to make the opening slightly larger than the scanner 210 in order to facilitate the operation of engaging the first lifting shaft 3001 and the second lifting shaft 3002 with the four corners (notched grooves 3003 and 3004) of the scanner 210.

[0034] As shown in Figures 3A and 3B, the lifting mechanism has a first wire portion 3101 as a first cable portion and a second wire portion 3102 as a second cable portion. The first wire portion 3101 is disposed closer to the rotating drum, and the second wire portion is disposed farther from the rotating drum. The lifting mechanism basically has a vertically symmetrical structure as shown in Figure 3B.

[0035] 3B, first wire portion 3101 and second wire portion 3102 are arranged as a pair in the axial direction of rotating drum 31. The pair of first wire portion 3101 and second wire portion 3102 supports the four corners of rectangular parallelepiped scanner 210, allowing scanner 210 to be lifted up to a predetermined height. Because first wire portion 3101 and second wire portion 310 support the four corners of scanner 210, the lifted posture of scanner 210 can be stabilized.

[0036] The lifting mechanism includes a tensioner 3400, the details of which are shown in Figures 4A and 4B, and a winding member 3000, the details of which are shown in Figure 5. The winding member 3000 includes a drum-shaped member that simultaneously winds up a first wire portion 3101 on the right side and a second wire portion 3102 on the left side. The first wire portion 3101 is unwound from one side of the winding member 3000, drawn downward via an idler pulley 3301, folded back upward by a first lifting shaft 3001 serving as a first shaft member, and drawn into the tensioner 3400 via another idler pulley 3440.

[0037] The second wire portion 3102, which is unwound from the other side of the winding member 3000, is pulled out downward via an idler pulley 3302. Thereafter, the second wire portion 3102 is folded back upward on the second lifting shaft 3002, which serves as a second shaft member, and is attached to a wire hook 3300 via another idler pulley 3310.

[0038] Return pulleys 3301a and 3302a are rotatably inserted into the first lifting shaft 3001 and the second lifting shaft 3002. The first wire portion 3101 and the second wire portion 3102 are wound around the return pulleys 3301a and 3302a in a U-shape.

[0039] L-shaped notched grooves 3003 and 3004 are formed at the four corners of scanner 210 for engaging first lifting shaft 3001 and second lifting shaft 3002. Notched groove 3003 closer to rotating drum 31 is formed in a position close to the bottom of scanner 210 and is configured to be able to engage first lifting shaft 3001. Notched groove 3004 farther from rotating drum 31 is formed in a position close to the ceiling of scanner 210 and is configured to be able to engage second lifting shaft 3002.

[0040] By rotating the winding member 3000, which will be described later in Figure 5, clockwise, the first wire portion 3101 and the second wire portion 3102 can be simultaneously wound onto the winding member 3000, and the first lifting shaft 3001 and the second lifting shaft 3002 can be lifted.

[0041] 2B, 3A, and 3B, a pair of guide side plates 720, 730 are disposed on both sides of the scanner 210. The front guide side plate 720 is on the front side of the machine, and the rear guide side plate 730 is on the rear side. These guide side plates 720, 730 maintain a stable posture of the scanner 210 when it is lifted.

[0042] Note that the positions of the guide side plates 720 and 730 in Fig. 2B do not completely match the positions of the guide side plates 720 and 730 in Fig. 3B. That is, the position of the guide side plate 720 in Fig. 3B is shifted further back than the position of the guide side plate 720 in Fig. 2B. This is because the guide side plate 720 in Fig. 2B is continuous with the guide side plate 720 in Fig. 3B via a horizontal portion (extending in the vertical direction in Fig. 3B) not shown.

[0043] The two guide side plates 720, 730 are connected by a connecting plate 740. This connecting plate 740 is formed with a spring stopper portion 740a, which will be described later.

[0044] The guide side plates 720 and 730 are formed with notches 721 and 722 for hooking onto and engaging with the four engaged pins 211 and 212 formed on both sides of the scanner 210. One of the engaged pins 211 is formed in a position close to the bottom surface at the center in the left-right direction of the scanner 210. The other engaged pin 212 is formed at the upper left end of the scanner 210.

[0045] The engaged pin 211 is configured to engage with one of the notches 721 formed in the lower parts of the guide side plates 720 and 730. The right side of the notch 721 is a dead end.

[0046] The left side of the notch 721 continues to an inclined groove 723, a vertical groove 724, and a tapered groove 725 that widens downward. The entire area from the notch 721 to the tapered groove 725 forms an L shape. When the scanner 210 is loaded and installed, one of the engaged pins 211 is positioned in a predetermined position in the order of tapered groove 725 → vertical groove 724 → inclined groove 723 → notch 721.

[0047] The other engaged pin 212 is configured to engage with a notch 722 formed in the upper left end of the guide side plate 720 when the scanner 210 is loaded and installed. The right side of the notch 722 terminates in a step. The left side of the notch 722 continues to an inclined portion 726.

[0048] (●Tensioner) Next, the tensioner 3400 will be described. This tensioner 3400 is intended to reduce the amount of slack in the first wire portion 3101. If the amount of slack in the first wire portion 3101 is large, the first wire portion 3101 may become entangled with internal components such as the winding member 3000 or the idler pulley 3301, causing a malfunction. The tensioner 3400 includes a tension spring 3401 as an elastic member, and the tension spring 3401 reduces the amount of slack in the first wire portion 3101.

[0049] Specifically, as shown in FIG. 4A, a bracket 720a is provided to protrude from an inner surface 720b of the front guide side plate 720, and a tensioner 3400 is disposed rotatably around a fulcrum pin 3410 of the bracket 720a.

[0050] The tensioner 3400 has a first abutment portion 3400a serving as a first restriction portion at its tip end and a second abutment portion 3400b at its base end. One end of a tension spring 3401 is connected to the tip end of the tensioner 3400. The other end of the tension spring 3401 is fixed to the spring fastening portion 740a. The biasing force of the tension spring 3401 causes the second abutment portion 3400b of the tensioner 3400 to abut against the inner surface 720b of the front guide side plate 720, and is held in the position shown by the dashed line in FIG. 4A.

[0051] An idler pulley 3420 is attached to the tip side of the tensioner 3400. A first wire portion 3101 is wound around the idler pulley 3420. An end of the first wire portion 3101 is fastened to a bracket 3300 formed on the inner surface 720b of the front guide side plate 720.

[0052] First wire portion 3101 is wound around idler pulley 3420, then turns back and is wound around pulleys 3430 and 3440, and then wound around first lifting shaft 3001. Then, after the slack in first wire portion 3101 is taken up by take-up member 3000 at the chain line position of tensioner 3400 in FIG. 4A, lifting of scanner 210 begins.

[0053] At this time, in response to the winding of the first wire portion 3101 by the winding member 3000, the tensioner 3400 rotates clockwise around the fulcrum pin 3410 while stretching the tension spring 3401 as shown in Fig. 4A. When the first abutment portion 3400a of the tensioner 3400 abuts against the inner surface 720b of the front guide side plate 720, the tensioner 3400 stops absorbing slack, and the first lifting shaft 3001 starts to rise (the right side of the scanner 210 starts to rise).

[0054] 4B, a rod-shaped tensioner lock 3402 can be disposed adjacent to the upper surface of the tensioner 3400. This tensioner lock 3402 is rotatably hung between the front guide side plate 720 and the rear guide side plate 730.

[0055] L-shaped locking claws 3402a are provided near both ends of the tensioner lock 3402. A through-hole 3400c is also formed in the tensioner 3400. The through-hole 3400c is formed in a position close to the tensioner lock 3402, and when the tensioner lock 3402 rotates to the right as shown in Figures 4B(b) and (c), the locking claws 3402a are inserted into the through-hole 3400c.

[0056] With the locking claw 3402a inserted, the rotation of the tensioner 3400 is locked, thereby preventing the natural lift of the first shaft member 3001. Therefore, as will be described later with reference to Figures 7E-7F, it is possible to facilitate the operation of engaging the engaged pins 211 and 212 of the scanner 210 with the notches 721 and 722 of the front guide side plate 720 and the rear guide side plate 730.

[0057] (● Winding mechanism) Next, a description will be given of the winding mechanism that winds up the first wire part 3101 and the second wire part 3102. This winding mechanism has a drum-shaped winding member 3000 equipped with a winding gear 3503 on a base plate, as shown in Fig. 5. As shown in Fig. 3B, the winding member 3000 is connected to another winding member 3000 on the opposite side by a connecting shaft 3010. The winding gear 3503 meshes with one side of a handle gear 3505 via a reduction gear 3504.

[0058] The opposite side of the handle gear 3505 is engaged with a damper gear 3502. This damper gear 3502 is configured to prevent rapid rotation of the handle gear 3505 and therefore the winding member 3000. This makes it possible to prevent the scanner 210 from suddenly falling under its own weight when the scanner 210 is lowered for replacement or when the handle gear 3505 is released.

[0059] A manually operable handle 3500 is attached to the shaft of the handle gear 3505. By rotating this handle 3500 clockwise, the winding member 3000 is rotated, and the first wire part 3101 and the second wire part 3102 can be wound up simultaneously.

[0060] A handle lock 3501 as a locking mechanism is provided in the middle of the handle 3500. The handle lock 3501 is configured to be able to fix the position of the handle 3500.

[0061] Handle lock 3501 can be configured, for example, by a screw that can be inserted into a hole formed in handle 3500. Fastening the screw prevents rotation of handle 3500, and removing the screw allows handle 3500 to rotate.

[0062] (●Wire winding amount and shaft member height fluctuation) 6 is a graph showing the amount of winding (horizontal axis) of the first wire part 3101 and the second wire part 3102 by the winding member 3000 and the fluctuation in height of the first lifting shaft 3001 and the second lifting shaft 3002. The left end of the graph shows the height of the first lifting shaft 3001 and the second lifting shaft 3002 at the time of FIG. 7B.

[0063] 7B and 7C show the period during which the slack in first wire part 3101 and second wire part 3102 is absorbed by winding member 3000. Therefore, the heights of first lifting shaft 3001 and second lifting shaft 3002 do not change.

[0064] Once the slack in the first wire portion 3101 and the second wire portion 3102 is gone, it becomes possible to lift the scanner 210. However, since the tensioner 3400 is configured to absorb the slack in the first wire portion 3101 as described above, in the initial stage of winding, the first lifting shaft 3001 cannot be raised until the slack in the first wire portion 3101 stored in the tensioner 3400 is absorbed by the winding member 3000.

[0065] As a result, the second lifting shaft 3002 rises before the first lifting shaft 3001 (FIGS. 7C-7D). After FIG. 7D, the first wire portion 3101 cannot be further paid out from the tensioner 3400, so the first lifting shaft 3001 and the second lifting shaft 3002 are lifted at the same speed until FIG. 7E.

[0066] (● How to install the scanner) The method for installing scanner 210 will be described below with reference to Figures 7A to 7F. First, scanner 210 is carried into access opening 700 as shown in Figure 7A, and then further inserted horizontally toward the back. The carry-in or insertion direction of scanner 210 is the axial direction of rotating drum 31. At this time, first lifting shaft 3001 and second lifting shaft 3002 hang down within access opening 700.

[0067] 7B, the first lifting shaft 3001 and the second lifting shaft 3002 are engaged with the notched grooves 3003 and 3004 of the scanner 210. At this time, since the first lifting shaft 3001 and the second lifting shaft 3002 are hanging down within the access opening 700, the first lifting shaft 3001 and the second lifting shaft 3002 can be easily engaged with the scanner 210.

[0068] After engaging the first lifting shaft 3001 and the second lifting shaft 3002 in this manner, the winding member 3000 is rotated as shown in Fig. 7C. This removes slack from the first wire portion 3101 and the second wire portion 3102. Thereafter, as shown in Fig. 7D, the winding member 3000 is further rotated to wind the first wire portion 3101 and the second wire portion 3102 onto the winding member 3000.

[0069] In the early stage of this winding process, tensioner 3400 stands at a right angle as shown by the chain line in Fig. 4A, so there is a margin in the length of the first wire portion 3101 that can be wound. Therefore, in the early stage of winding, only the left side of scanner 210 is lifted by second lifting shaft 3002, and the right side of scanner 210 remains in contact with bottom surface 710 of access opening 700. In this way, by consuming a predetermined amount of wire winding within the range of motion (approximately 90°) of tensioner 3400, it is possible to prevent the right side of scanner 210 from being lifted, as shown in Fig. 7D.

[0070] When the first wire portion 3101 and the second wire portion 3102 are further wound by the winding member 3000 from the state shown in Fig. 7D, the tensioner 3400 rotates clockwise against the tension spring 3401, as shown by the solid line in Fig. 4A. When the first abutment portion 3400a of the tensioner 3400 abuts against the inner surface 720b of the front guide side plate 720, the tensioner 3400 cannot rotate clockwise any further.

[0071] Therefore, when the first wire portion 3101 and the second wire portion 3102 are subsequently wound by the winding member 3000, the first lifting shaft 3001 and the second lifting shaft 3002 rise simultaneously, and not only the left side of the scanner 210 but also the right side of the scanner 210 is lifted. Therefore, from Figure 7D to Figure 7E, the scanner 210 rises (moves parallel) while maintaining its predetermined inclination angle. During the rise of the scanner 210, the engaged pin 211 is guided by the tapered groove 725 and smoothly introduced into the vertical groove 724.

[0072] 7E shows the state in which the first lifting shaft 3001 and the second lifting shaft 3002 have been raised to their maximum height. When this maximum height is exceeded, the engaged pin 211 of the scanner 210 abuts against the bent portion 723a between the inclined groove 723 and the vertical groove 724. Therefore, the rotation stop position of the handle 3500 can be easily sensed by the abutting sensation of the handle 3500 that rotates the winding member 3000.

[0073] At the height position of Figure 7E, the handle 3500 that rotates the winding member 3000 and the tensioner 3400 are locked. The handle 3500 is locked by the handle lock 3501 in Figure 5. The tensioner 3400 is locked by the tensioner lock 3402.

[0074] In this locked state, scanner 210 is moved to the right as shown in Figures 7E to 7F, and engaged pins 211 and 212 are engaged with notches 721 and 722. Since scanner 210 is close to access opening 700, lateral movement from Figure 7E to Figure 7F is easy.

[0075] During this lateral movement, the weight of the scanner 210 can be used to slide the engaged pins 211 and 212 obliquely downward along the inclined groove 723 and the inclined portion 726. Therefore, the engaged pins 211 and 212 can be easily engaged with the notches 721 and 722.

[0076] After moving the scanner 210 laterally, it is checked whether there is any rattle between the engaged pins 211, 212 and the notches 721, 722, and if there is any rattle, the winding member 3000 is appropriately rotated in the reverse direction. In this way, the stability of the scanner 210 is confirmed, and the installation of the scanner 210 is completed.

[0077] The scanner 220 downstream of the scanner 210 in the paper transport direction can be installed after the scanner 210 has been installed. That is, the downstream scanner 220 is inserted horizontally toward the front through the access opening 700 shown in Figure 7F. Note that the above steps are reversed when removing the scanners 210 and 220.

[0078] Although the above describes an embodiment of the present invention, the present invention is not limited to the above embodiment and various modifications are possible. In addition, in the present application, the liquid ejected from the droplet ejection units 33A-33D may have a viscosity and surface tension that allows it to be ejected from the head. While not particularly limited, it is preferable that the viscosity of the liquid be 30 mPa·s or less at room temperature and pressure, or upon heating or cooling. More specifically, the liquid may be a solution, suspension, emulsion, or the like containing a solvent such as water or an organic solvent, a colorant such as a dye or pigment, a polymerizable compound, a resin, a surfactant, or a functional material such as DNA, amino acids, proteins, or calcium, or an edible material such as a natural dye. These liquids can be used for applications such as inkjet inks, surface treatment solutions, liquids for forming components of electronic devices or light-emitting elements, resist patterns for electronic circuits, and 3D modeling materials.

[0079] Energy sources for ejecting liquid include those that use piezoelectric actuators (laminated piezoelectric elements and thin-film piezoelectric elements), thermal actuators that use electrothermal conversion elements such as heating resistors, and electrostatic actuators that consist of a vibration plate and an opposing electrode. Also, "liquid ejecting devices" include not only devices that can eject liquid onto objects onto which the liquid can adhere, but also devices that eject liquid into air or liquid.

[0080] This "liquid ejecting device" can also include means for feeding, transporting, and discharging objects onto which liquid can be attached, as well as other pre-processing devices, post-processing devices, etc. For example, "liquid ejecting device" includes an image forming device that ejects ink to form an image on paper, and a three-dimensional modeling device (3D modeling device) that ejects modeling liquid onto a powder layer formed by layering powder in order to form a three-dimensional object (a three-dimensional model).

[0081] Furthermore, the term "liquid ejection device" is not limited to devices that use ejected liquid to visualize meaningful images such as letters and figures. For example, it also includes devices that form patterns that have no meaning in themselves, and devices that create three-dimensional images.

[0082] The term "something to which a liquid can adhere" refers to something to which a liquid can adhere at least temporarily, and to which the liquid can adhere and stick, or to which the liquid can penetrate. Specific examples include media such as paper, recording paper, film, and cloth, electronic substrates, electronic components such as piezoelectric elements, powder layers, organ models, and test cells, and unless otherwise specified, includes all things to which a liquid can adhere. The material of the "something to which a liquid can adhere" may be paper, thread, fiber, fabric, leather, metal, plastic, glass, wood, ceramics, or the like, as long as the liquid can adhere even temporarily.

[0083] Furthermore, a "liquid ejecting device" refers to a device in which a droplet ejection head and an object onto which the liquid can be attached move relatively, but is not limited to this. Specific examples include a serial-type device in which a droplet ejection head moves, and a line-type device in which the droplet ejection head does not move. Other examples of a "liquid ejecting device" include a treatment liquid application device that ejects a treatment liquid onto paper to apply the treatment liquid to the surface of the paper for purposes such as modifying the surface of the paper, and an injection granulation device that sprays a composition liquid in which raw materials are dispersed through a nozzle to granulate fine particles of the raw materials. In the present application, the terms "image formation," "recording," "printing," "imaging," "printing," "shaping," and the like are all synonymous. [Explanation of symbols]

[0084] 1: Inkjet recording device 10: Loading section 11A: Lower loading tray 11B: Upper loading tray 12A, 12B: Feeding device 20: Pre-processing section 21: Coating section 30: Printing section 31: Rotating drum (carrying member) 32: Droplet ejection unit 33A to 33D: droplet discharge units 34: transfer drum 35: Transfer cylinder 40: Drying section 40: Drying section (heating section) 41: Conveying mechanism section 50: Delivery section 51: Delivery tray 60: Reversing mechanism 61: Conveying path 210, 220: Scanner (reading member) 211, 212: Engaged pin 501: Stack unit 502: Sheet conveying device 700: Access opening 710: Bottom 720, 730: Guide side plate 720a: Bracket 720b: inner surface 721, 722: notch 723: Inclined groove 724: Vertical groove 725: Tapered groove 726: Inclined section 740: Connecting plate 740a: Spring fastening part 3000: Winding member 3001: First lifting shaft (first shaft member) 3002: Second lifting shaft (second shaft member) 3003: Notched groove 3003, 3004: Notched groove 3004: Notched groove 3010: Connecting shaft 3101: First wire section (first cable section) 3102: Second wire section (second cable section) 3300: Bracket 3301: Idler pulley 3301a, 3302a: Pulley 3302, 3310: Idler pulley 3400: Tensioner 3400a: First abutment portion (first restriction portion) 3400b: Second abutment portion 3400c: Through hole 3401: Tension spring 3402: Tensioner lock (second restrictor) 3402a: Locking claw 3410: Fulcrum pin 3420: Idler pulley 3430: Pulley 3440: Idler pulley 3500: Handle 3501: Handle lock 3502: Damper gear 3503: Winding gear 3504: Reduction gear 3505: Handle gear P: Paper (recording medium) [Prior art documents] [Patent documents]

[0085] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-198899

Claims

1. An image reading device in which a plurality of reading members for reading images on a recording medium are arranged radially around a rotation axis of a carrier member that rotates and carries a recording medium on its circumferential surface, an access opening through which the plurality of reading members can be inserted; a lifting mechanism having a cable portion for lifting the reading member carried into the access opening, the cable portion lifting and positioning the reading member at a predetermined height on the outer periphery of the carrier member; An image reading device comprising:

2. The cable portion is a first cable portion having a first shaft member that engages with one end of the reading member that is closer to the carrier member; a second cable portion having a second shaft member that engages with the other end of the reading member, the end being farther from the support member; 2. The image reading device according to claim 1, further comprising:

3. 3. An image reading device according to claim 2, wherein said first and second cable portions are arranged as a pair in the axial direction of said support member.

4. 4. The image reading device according to claim 3, further comprising a winding member for winding up the first and second cable portions.

5. 5. The image reading device of claim 4, wherein slack is formed in the first cable portion so that the second cable portion is wound by the winding member before the first cable portion.

6. 6. The image reading apparatus according to claim 5, wherein a tensioner for reducing the amount of slack is disposed in the first cable portion.

7. 7. An image reading device according to claim 6, wherein the tensioner has an elastic member that reduces the amount of slack in the first cable portion, the elastic member stretches so as not to lift the first shaft member due to the winding operation of the winding member, and when the amount of winding of the second cable portion by the winding member reaches a predetermined amount, the stretching operation is regulated by a first regulating portion, causing the first shaft member to lift.

8. 8. The image reading device according to claim 7, wherein the contraction of the elastic member in the direction opposite to the expansion is regulated by a second regulating portion.

9. 9. The image reading device according to claim 4, further comprising a locking mechanism capable of locking the rotation of the winding member.

10. 9. The image reading device according to claim 4, further comprising a damper mechanism for suppressing excessive rotation of the take-up member.

11. 1. An image reading device in which a plurality of reading members for reading images on a recording medium are arranged radially around a rotation axis of a carrier member that holds and transports a recording medium on its circumferential surface, the reading member comprising: an access opening through which the plurality of reading members can be introduced to set them in predetermined positions on the outer periphery of the carrier member; a lifting mechanism that lifts and positions the reading member at a predetermined position on the outer periphery of the carrier member by a first cable having a first shaft member that engages with one end of the reading member that is carried in through the access opening and that is closer to the carrier member, and a second cable having a second shaft member that engages with the other end of the reading member that is carried in through the access opening and that is farther from the carrier member; A reading member mounting mechanism comprising:

12. 1. A method for attaching a reading member to an image reading device in which a plurality of reading members for reading images on a recording medium are arranged radially around a rotation axis of a carrying member that holds and transports a recording medium on its circumferential surface, the method comprising: introducing the plurality of reading members through a single access opening to set them in predetermined positions on the outer periphery of the carrier member; a step of engaging a first shaft member of a first cable portion with one end of the reading member introduced through the access opening, the end being closer to the carrier member; a step of engaging a second shaft member of a second cable portion with the other end of the reading member introduced through the access opening, the end being farther from the carrier member; a step of winding up the first cable portion and the second cable portion with a winding member to lift and place the reading member at a predetermined position on the outer periphery of the support member; A method for attaching a reading member, comprising:

Images