Media transport devices, electronic equipment, and transport rollers

Abstract

To provide a media transport device that reduces the risk of paper dust adhering to the media. [Solution] The media transport device of the present invention comprises a transport roller capable of transporting a medium and a frame 10 positioned opposite the transport roller. The transport roller includes a shaft 11 and a roller 12 that is detachable from the shaft 11. A sheet material 14 that is removable from the surface 13 is arranged on a surface 13 of the frame 10 along the extending direction (Y-axis direction) of the shaft 11. The surface 13 of the frame 10 is located vertically above the roller 12. Multiple sheets of the sheet material 14 are stacked in a manner that allows for sequential removal.

Description

Technical Field

[0001] The present invention relates to a medium conveyance device, an electronic device such as a printer, and a conveyance roller.

Background Art

[0002] As an example of the prior art of this type of device, there is one described in Patent Document 1. Patent Document 1 discloses an image forming apparatus in which a pickup roller and a driving feed roller are replaceable. The replacement of the pickup roller and the driving feed roller is performed by moving the pickup roller and the driving feed roller in the longitudinal direction, pulling them out from the rotating shaft, and then inserting new pickup roller and driving feed roller into the rotating shaft.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the process of driving the pickup roller and the driving feed roller to convey the paper, paper dust scatters from the paper. Especially in a narrow area, the paper dust easily adheres to the surface of the support plate near the roller. Also, when replacing with a new pickup roller or the like in a narrow area, the pickup roller may contact the surface of the support plate and paper dust may be transferred to the pickup roller.

Means for Solving the Problems

[0005] To solve the above problems, the media conveying device according to the present invention comprises a conveying roller capable of conveying a medium and a frame disposed opposite to the conveying roller, wherein the conveying roller includes a shaft and a roller detachable from the shaft, and a sheet material detachable from the surface is disposed on the surface of the frame along the extending direction of the shaft.

[0006] Furthermore, the electronic device according to the present invention comprises a media transport device according to any one of the first to eighth embodiments described later, and a processing unit arranged downstream in the transport direction of the media transport device and performing processing on the media.

[0007] Furthermore, the conveying roller according to the present invention is a conveying roller that is arranged opposite to a frame and is rotatably supported, wherein the conveying roller includes a shaft and a roller that is detachable from the shaft, the roller has a flange at its axial end, and the flange is characterized in that the length dimension of the flange in the extending direction of the shaft is 50% or more of the length dimension of the roller in the extending direction of the shaft, and the outer diameter dimension is 80% or more of the outer diameter dimension of the roller. [Brief explanation of the drawing]

[0008] [Figure 1] A schematic front view of the recording device according to Embodiment 1. [Figure 2] Enlarged front view of the main part of the media transport device of Embodiment 1. [Figure 3] Enlarged perspective view of the main part of the media transport device of Embodiment 1. [Figure 4] Enlarged perspective view of the main part of the media transport device of Embodiment 1. [Figure 5] Enlarged perspective view of the roller of Embodiment 1. [Figure 6] Enlarged view of the main parts of the roller and frame portion of Embodiment 1. [Figure 7] Enlarged view of the main parts of the roller and frame portion of Embodiment 1. [Figure 8] Enlarged view of the main parts of the roller and frame portion of Embodiment 1. [Figure 9]Enlarged view of the main parts of the roller and frame portion of Embodiment 2. [Figure 10] Enlarged view of the main parts of the seat holder and frame portion of Embodiment 3. [Modes for carrying out the invention]

[0009] The present invention will now be described in general terms. To solve the above problems, a media transport device according to a first aspect of the present invention comprises a transport roller capable of transporting a medium and a frame disposed opposite to the transport roller, wherein the transport roller includes a shaft and a roller detachable from the shaft, and a sheet material detachable from the surface is disposed on a surface of the frame along the extending direction of the shaft.

[0010] As the media transport device is miniaturized, the distance between the rollers and the frame may become narrower. Also, paper dust tends to scatter from the media during transport. This scattered paper dust tends to adhere to the frame. Furthermore, when the rollers are removed from the shaft and replaced, the rollers tend to come into contact with the frame, making it highly likely that the paper dust will adhere to the rollers. According to this embodiment, the transport roller includes a shaft and a roller detachable from the shaft, and a sheet material detachable from the surface is arranged on the surface of the frame along the extending direction of the shaft. By peeling the sheet material from the frame, paper dust adhering to the frame is removed along with the sheet material. As a result, when replacing the roller, the risk of paper dust adhering to the new roller can be reduced by peeling the sheet material from the frame and then attaching the new roller to the shaft.

[0011] A media transport device according to a second aspect of the present invention is an aspect dependent on the first aspect, characterized in that the surface of the sheet material opposite to the aforementioned surface is adhesive.

[0012] According to this aspect, the surface of the sheet material on the side opposite to the said surface has adhesiveness. Thereby, the sheet material can actively collect the paper dust, and the diffusion of the paper dust can be suppressed.

[0013] The media conveyance device according to the third aspect of the present invention is an aspect subordinate to the first aspect, characterized in that the frame includes a sheet holder at a position facing the conveyance roller, and the sheet material is removably held by the sheet holder.

[0014] According to this aspect, the sheet material is removably held by being pulled out from the sheet holder provided in the frame. Thereby, the sheet can be easily taken out from the frame.

[0015] The media conveyance device according to the fourth aspect of the present invention is an aspect subordinate to the first aspect, characterized in that the surface of the frame is located vertically above the roller. In addition, this aspect can also be subordinate to the second aspect or the third aspect.

[0016] Since it is difficult to see that the surface of the frame is vertically above the roller, it is easy to bring the roller into contact with the frame when replacing the roller. However, according to this aspect, even in the case of a structure where the surface of the frame is located vertically above the roller, the paper dust attached is removed by removing the sheet material from the frame. Therefore, even if the roller comes into contact with the frame during replacement, the adhesion of paper dust can be prevented.

[0017] The media conveyance device according to the fifth aspect of the present invention is an aspect subordinate to the first aspect, characterized in that a plurality of the sheet materials are sequentially stacked so as to be removable. In addition, this aspect can also be subordinate to any one of the second aspect to the fourth aspect.

[0018] According to this embodiment, the sheet material is arranged in a manner that allows for sequential removal of multiple sheets. This prevents the transfer of paper dust and other debris to the roller by removing one sheet of the sheet material each time the roller is replaced.

[0019] A media transport device according to a sixth aspect of the present invention is an aspect dependent on the first aspect, characterized in that each sheet material has an identification mark.

[0020] According to this embodiment, each sheet material has an identification mark. This allows the user to easily recognize, for example, the number of times the roller has been replaced.

[0021] A media transport device according to a seventh aspect of the present invention is a device dependent on the fifth aspect, comprising a transport roller unit having the roller and the shaft, wherein the transport roller unit is replaceable, and the bottommost sheet material among the plurality of sheet materials is marked with a replacement indication that suggests the replacement of the transport roller unit. Furthermore, this embodiment may be subordinate to the sixth embodiment.

[0022] According to this embodiment, the system includes a transport roller unit having the roller and the shaft, the transport roller unit being replaceable, and the bottommost sheet material of the plurality of sheet materials is marked with a replacement indication that suggests the transport roller unit should be replaced. This makes it easy to recognize that it is time to replace the transport roller unit having the roller when the stacked sheet materials are peeled off in order each time the roller is replaced and the bottommost sheet material is revealed. In other words, there is no need to record the number of times the roller has been replaced, and the time to replace the transport roller unit can be easily recognized.

[0023] An eighth aspect of the present invention is a media conveying device that is dependent on the first aspect, wherein the roller has a flange at its axial end, and the flange has a length dimension in the direction of extension of the shaft that is 50% or more of the length dimension of the roller in the direction of extension of the shaft, and an outer diameter dimension that is 80% or more of the outer diameter dimension of the roller. Furthermore, this embodiment may be subordinate to any one of the second through seventh embodiments.

[0024] According to this embodiment, the roller has a flange at its axial end, wherein the flange has a length dimension in the direction of extension of the shaft that is 50% or more of the length dimension of the roller in the direction of extension of the shaft, and an outer diameter dimension that is 80% or more of the outer diameter dimension of the roller. This allows the roller to be easily guided onto the shaft by moving the flange along or in contact with the surface of the frame. Furthermore, the flange makes it easier to create a state in which the roller does not come into contact with the frame even when the flange comes into contact with the surface of the frame. In other words, it becomes easier to maintain a constant distance between the roller and the surface of the frame. Therefore, for example, even if the roller is replaced while paper dust is attached to the frame, it is easy to create a state in which the roller does not come into contact with the surface of the frame even when the flange comes into contact with the frame, thus preventing paper dust from adhering to the new replacement roller.

[0025] Furthermore, an electronic device according to the ninth aspect of the present invention comprises a medium transport device according to any one of the first to eighth aspects, and a processing unit arranged downstream of the medium transport device in the transport direction and performing processing on the medium. According to this embodiment, the effect of obtaining a media transport device according to any one of the first to eighth embodiments can be obtained for electronic devices such as printers.

[0026] Furthermore, a transport roller according to a tenth aspect of the present invention is a transport roller that is arranged opposite to a frame and is rotatably supported, wherein the transport roller includes a shaft and a roller that is detachable from the shaft, the roller has a flange at its axial end, and the flange is characterized in that the length dimension of the flange in the extending direction of the shaft is 50% or more of the length dimension of the roller in the extending direction of the shaft, and the outer diameter dimension is 80% or more of the outer diameter dimension of the roller.

[0027] According to this embodiment, the conveying roller includes a shaft and a roller detachable from the shaft, the roller having a flange at its axial end, the flange having a length dimension in the extending direction of the shaft that is 50% or more of the length dimension of the roller in the extending direction of the shaft, and an outer diameter dimension that is 80% or more of the outer diameter dimension of the roller. This allows the roller to be easily guided onto the shaft by moving the flange along or in contact with the surface of the frame. Furthermore, the flange makes it easier to create a state in which the roller does not come into contact with the frame even when the flange comes into contact with the surface of the frame. In other words, it becomes easier to maintain a constant distance between the roller and the surface of the frame. Therefore, for example, even if the roller is replaced while paper dust is attached to the frame, it is easy to create a state in which the roller does not come into contact with the surface of the frame even when the flange comes into contact with the frame, thus preventing paper dust from adhering to the new replacement roller.

[0028] [Embodiment] Hereinafter, a media transport device according to an embodiment of the present invention and an electronic device equipped with this media transport device will be specifically described with reference to Figures 1 to 10. In this description, we will focus on the case where the electronic device is a recording device such as an inkjet printer. In the following explanation, the three mutually orthogonal axes will be referred to as the X-axis, Y-axis, and Z-axis, as shown in each figure. The direction indicated by the arrows on the three axes (X, Y, Z) is the positive direction, and the opposite direction is the negative direction. The Z-axis direction corresponds to the vertical direction, i.e., the direction in which gravity acts, with the +Z direction indicating vertically upwards and the -Z direction indicating vertically downwards. The X-axis and Y-axis directions correspond to the horizontal direction. The +Y direction indicates the front direction of the recording device, and the -Y direction indicates the rear direction of the recording device. The +X direction indicates the right direction of the recording device, and the -X direction indicates the left direction of the recording device.

[0029] [Embodiment 1] <Overall Overview of the Recording Device> The recording device 1 in this embodiment is an inkjet printer, as an example. As shown in Figure 1, the recording device 1 comprises a media placement section 2, a transport path T, a recording section 3, an discharge receiving section (not shown), a media transport device 4, and an operation panel 5. The media 6 placed on the media placement unit 2 is picked up by the pick roller 7 and then transported along the transport path T in the transport direction F by the transport force from the media transport device 4. The recording unit 3 is an example of a processing unit that performs processing on the media 6. The recording unit 3 performs recording by ejecting ink as processing on the media 6 as it passes through the recording execution area 8 in the transport path T. The discharge receiving unit receives the media 6 that has been recorded on by the recording unit 3. The media transport device 4 will be described later.

[0030] In this embodiment, the recording unit 3 is a line head that is elongated in the width direction (Y-axis direction) of the medium 6. The recording unit 3 is not limited to a line head, and may also be a serial type head that moves back and forth in a direction intersecting the transport direction F. The recording operation on the medium 6 by the recording unit 3 and the transport operation of the medium 6 by the medium transport device 4 are performed by a control unit (not shown). Here, the control unit comprises a CPU, flash ROM, and RAM. The CPU performs various calculations according to the program stored in the flash ROM and controls the operation of the entire recording device 1. Flash ROM, an example of a storage means, is a non-volatile memory that can be read and written to. RAM, another example of a storage means, temporarily stores various types of information.

[0031] <Media transport device> Next, the configuration of the media transport device 4 according to Embodiment 1 will be described based on Figures 2 to 8. The media transport device 4 comprises a transport roller 9 capable of transporting the media 6, and a frame 10 positioned opposite the transport roller 9. The transport roller 9 includes a shaft 11 and a roller 12 that is detachable from the shaft 11. In other words, the conveyor roller 9 is configured such that the roller 12 is cantilevered to the shaft 11, and the roller 12 can be removed from the shaft 11 and replaced with a new roller 12. In this embodiment, the surface 13 of the frame 10 is positioned vertically above the roller 12. Of course, the surface 13 of the frame 10 is not limited to being positioned vertically above the roller 12; it may be positioned diagonally above or to the side, etc. The frame 10 is made of sheet metal or plastic. A sheet material 14 that is removable from the surface 13 is placed on the surface 13 of the frame 10 along the extending direction (Y-axis direction) of the axis 11. In this embodiment, the sheet material 14 is peelably attached to the surface 13 of the frame 10.

[0032] In this embodiment, as described above, the conveyor roller 9 has a roller 12 that is detachably attached to the shaft 11. In other words, the conveyor roller 9 has the roller 12 cantilevered to the shaft 11, and the roller 12 can be removed from the shaft 11 by grasping the knob 21 with your hand or the like. Then, a new roller 12 can be attached to the shaft 11 and replaced. As shown in Figures 4 and 5, the roller 12 is provided with a hole 22 through which the shaft 11 passes. A locking projection 23 is provided at the base end of the shaft 11. A locking portion 24 is provided on the flange 28 on the roller 12 side. By locking the locking portion on the shaft 11 side with the locking portion 24 on the roller 12, the roller 12 rotates integrally with the shaft 11.

[0033] Here, the transport roller 9 is a separation roller 15 that separates the medium 6 into individual sheets and transports them in the transport direction F when the medium 6 is transported in a double-feed state by the pick roller 7. This separation roller 15, which is the transport roller 9, is positioned opposite the flat plate-shaped surface 13 of the frame 10 at a position close to it. The separation roller 15 works in conjunction with the retard roller 16 to separate the medium 6 into individual sheets. It should be noted that the transport roller 9 is not limited to the separation roller 15, and any roller that is positioned opposite the surface 13 of the frame 10 in close proximity and that imparts transport force to the medium 6 is also acceptable.

[0034] In this embodiment, the retard roller 16 is also cantilevered on the shaft 18, and is configured so that the roller 17 can be removed from the shaft 18 and replaced with a new roller 17. The roller 17 also has a gripping portion 25. Furthermore, the pick roller 7 is also configured such that the roller 19 is cantilevered to the shaft 20, allowing the roller 19 to be removed from the shaft 20 and replaced with a new one. The roller 19 also has a knob portion 26. A locking projection 27 (Figure 4) is provided on the shaft 20, and a locking portion (not shown) that engages with the locking projection 27 is provided on the roller 19 side. A locking projection (not shown) is also provided on the shaft 18, and a locking portion (not shown) that engages with the locking projection is provided on the retard roller 16 side.

[0035] <Sheet material> As shown in Figures 6 to 8, in this embodiment, multiple sheet materials 14 are stacked in a manner that allows for sequential removal. Here, three sheet materials 141, 142, and 143 are stacked. In these figures, the locking portion 24 provided on the flange 28 is not shown. Figure 6 shows the state when the roller 12 has reached the end of its replacement period. Paper dust 31 is adhering to the sheet material 141 that is directly opposite the roller 12. The replacement period for the roller 12 is predetermined based on the number of sheets the roller 12 has fed the medium 6 and the usage time. The system is configured to notify the user when it is time to replace the roller. It is also configured to allow the user to replace the roller at their own discretion. Figure 7 shows the state in the process of removing the sheet material 141.

[0036] In this embodiment, each sheet material 141, 142, and 143 is marked with an identification mark 32. The identification mark 32 only needs to be able to distinguish and recognize each sheet material 141, 142, and 143. Specific examples of identification marks include numbers (number of times), letters, and colors (blue, yellow, red). Here, as shown in Figure 4, the numbers "1," "2," and "3" are used. Sheet material 141 is marked with the number "1," sheet material 142 is marked with the number "2," and sheet material 143 is marked with the number "3." In Figure 4, the numbers "2" on sheet material 142 and "3" on sheet material 143 are hidden by sheet material 141 and are not visible. These numbers "1," "2," and "3" correspond to the number of times the roller 12 has been replaced.

[0037] As shown in Figures 6 and 7, in this embodiment, the surface 33 of the sheet material 14 opposite to the surface 13 is adhesive. That is, an adhesive layer 36 is provided. The degree of adhesiveness of the adhesive layer 36 is designed to be such that it can adhere to and capture paper dust 31 scattered from the medium 6 when the medium 6 is transported by the transport roller 9, etc., and that the sheet materials 141, 142, and 143 can be joined together in a laminated state. By peeling off and removing the sheet material 141 from the state shown in Figure 6, the state shown in Figure 8 is obtained. In Figure 8, the surface 33 of the sheet material 142 is adhesive and adheres to and captures the scattered paper dust 31. Similarly, even when the sheet material 142 is peeled off and the surface 33 of the sheet material 143 (not shown) is exposed, the paper dust 31 adheres to and is captured by the adhesiveness of the surface 33.

[0038] As shown in Figure 4, this embodiment includes a transport roller unit 30 having rollers 12 and a shaft 11. That is, the rollers 12 and the shaft 11 are unitized and configured to be handled as a single unit. The transport roller unit 30 is attached to a structural member such as a frame 10 in a replaceable manner. As shown in Figure 8, among the multiple sheet materials 141, 142, and 143, the bottommost sheet material 143 is marked with a replacement suggestion indicator 34 that indicates the need to replace the conveyor roller unit 30. Here, the replacement suggestion indicator 34 is marked "Unit Replacement". The replacement suggestion indicator 34 may also be written in text, such as "Please replace the roller unit next time," and may include the unit number and contact information.

[0039] <Instructions for replacing rollers> When it is time to replace the roller 12 in the state shown in Figures 3 and 6, remove the roller 12 from the shaft 11 as shown in Figure 7, and then peel off the sheet material 141. The order of removing the roller 12 and peeling off the sheet material 141 may be reversed. This results in the state shown in Figure 8, where a new sheet material 142 free of paper dust 31 is exposed. In this state, the new roller 12 is attached to the shaft 11 so that the roller 12 rotates integrally with the shaft 11. This completes the replacement.

[0040] <Description of the effects of Embodiment 1> (1) As the media transport device 4 is miniaturized, the distance between the roller 12 and the frame 10 may become narrower. Also, paper dust 31 tends to scatter from the media 6 as it is transported. This scattered paper dust 31 tends to adhere to the frame 10. Furthermore, when the roller 12 is removed from the shaft 11 and replaced, the roller 12 is likely to come into contact with the frame 10, so there is a strong risk that paper dust 31 will adhere to the roller 12. In this embodiment, the transport roller 9 includes a shaft 11 and a roller 12 that is detachable from the shaft 11. A sheet material 14 that is detachable from the surface 13 is arranged on a surface 13 of the frame 10 along the extending direction (Y-axis direction) of the shaft 11. By peeling the sheet material 14 from the frame 10, the paper dust 31 adhering to the frame 10 is removed along with the sheet material 14. As a result, when replacing the roller 12, the risk of paper dust 31 adhering to the new roller 12 can be reduced by peeling the sheet material 14 from the frame 10 and then attaching the new roller 12 to the shaft 11.

[0041] (2) In this embodiment, the surface 33 of the sheet material 14 opposite to the surface 13 is adhesive. This allows the sheet material 14 to actively collect paper dust 31 and suppress the diffusion of paper dust 31. (3) In this embodiment, the surface 13 of the frame 10 is located vertically above the roller. Since the surface 13 of the frame 10 is vertically above the roller 12, it is difficult to see, and the roller 12 is likely to come into contact with the frame 10 when replacing the roller 12. However, in this embodiment, even if the surface 13 of the frame 10 is located vertically above the roller, the paper dust 31 that has adhered to it can be removed by removing the sheet material 14 from the frame 10, so even if the roller 12 comes into contact with the frame 10 when replacing it, the adhesion of paper dust 31 can be prevented.

[0042] (4) In this embodiment, the sheet material 14 is laminated in a manner that allows for sequential removal. This prevents paper dust 31 and other dust from adhering to the roller 12 by peeling off one sheet of sheet material 14 each time the roller 12 is replaced. (5) In this embodiment, each sheet material 14 has an identification mark 32. This allows the user to easily recognize, for example, the number of times the roller 12 has been replaced.

[0043] (6) In this embodiment, a transport roller unit 30 having rollers 12 and shafts 11 is provided, and the transport roller unit 30 is attached in a replaceable manner. The bottommost sheet material 14 of the plurality of sheet materials 14 is marked with a replacement indication 34 that suggests the transport roller unit 30 should be replaced. This makes it easy to recognize that it is time to replace the transport roller unit 30 having rollers 12 when the stacked sheet materials 14 are peeled off in order each time the rollers 12 are replaced and the bottommost sheet material 143 is revealed. In other words, there is no need to record the number of times the rollers 12 have been replaced, and the time to replace the transport roller unit 30 can be easily recognized.

[0044] [Embodiment 2] Next, the media transport device 4 according to Embodiment 2 will be described with reference to Figure 9. The same reference numerals are used for parts that are the same as in Embodiment 1, and the explanation of their configuration and corresponding effects will be omitted. The roller 12 of the conveyor roller 9 in this embodiment has a flange 28 at the end opposite to the gripping portion 21 in the axial direction (Y-axis direction). The flange 28 in this embodiment is longer and thicker than the flange 28 of Embodiment 1. Specifically, the flange 28 is configured such that the length dimension A in the extending direction of the shaft 11 (Y-axis direction) is 50% or more of the length dimension B of the roller 12 in the extending direction of the shaft 11 (Y-axis direction), and the outer diameter dimension C is 80% or more of the outer diameter dimension D of the roller 12. In Figure 9, the locking portion 24 is not shown.

[0045] In this embodiment, the roller 12 can be easily guided onto the shaft 11 by moving the flange 28 along or in contact with the surface 13 of the frame 10. Furthermore, the long and thick flange 28 makes it easier to create a state where the roller 12 does not come into contact with the surface 13 of the frame 10 even when the flange 28 is in contact with the surface 13 of the frame 10. In other words, it becomes easier to maintain a constant distance between the roller 12 and the surface 13 of the frame 10. Therefore, for example, even if the roller 12 is replaced while paper dust 31 is attached to the surface 13 of the frame 10, it is easy to create a state where the roller 12 does not come into contact with the surface 13 of the frame 10 even when the flange 28 is in contact with the surface 13 of the frame 10, thus suppressing the attachment of paper dust to the new roller 12.

[0046] [Embodiment 3] Next, the media transport device 4 according to Embodiment 3 will be described with reference to Figure 10. The same reference numerals are used for parts that are the same as in Embodiment 1, and the explanation of their configuration and corresponding effects will be omitted. In this embodiment, the frame 10 is equipped with a sheet holder 29 at a position facing the transport roller 9. The sheet material 14 is removably held in the sheet holder 29. That is, in this embodiment, the sheet holder 29 is attached to the surface 13 of the frame 10. The sheet holder 29 is U-shaped, with one side open to form an opening 35. The opening 35 is for inserting and removing the sheet material 14. The sheet material 14 is basically the same as that described in Embodiment 1, but if it is adhesive, the degree of adhesiveness is set to a design specification that allows only one sheet material 14 with paper dust 31 attached to it to be removed from the laminated sheet material 14.

[0047] In this embodiment, the sheet material 14 is held in a sheet holder 29 provided on the frame 10 so that it can be removed by pulling it out. This makes it easy to remove the sheet material 14 from the frame 10 without the need to peel it off.

[0048] [Other embodiments] The media transport device 4 according to the present invention and the recording device 1 as an electronic device equipped with the media transport device 4 are based on having the configuration of the embodiments described above, but it is of course possible to make partial changes or omissions to the configuration without departing from the spirit of the present invention. The electronic device equipped with the media transport device 4 is not limited to the recording device 1. For example, it could also include an image reading device such as a scanner. [Explanation of symbols]

[0049] 1...Recording device, 2...Media placement unit, 3...Recording unit, 4...Media transport device, 5...Operation panel 6...Media, 7...Pick roller, 8...Recording execution area, 9...Conveyor roller 10...frame, 11...axle, 12...roller, 13...surface, 14...sheet material 15...Separation roller, 16...Retard roller, 17...Roller, 18...Axle 19...Roller, 20...Shaft, 21...Knob part, 22...Hole, 23...Locking projection, 24...Locking part, 25...Knob part, 26...Knob part, 27...Locking projection, 28...Flange, 29...Sheet holder, 30...Conveyor roller unit, 31...Paper dust, 32...Identification mark, 33...Surface, 34...Replacement suggestion mark, 35...Opening, 36...Adhesive layer, 141, 142, 143...Sheet material, A...Length dimension, B...Length dimension, C...Outer diameter dimension, D...Outer diameter dimension, F: Conveying direction, T: Conveying path

Claims

1. A transport roller capable of transporting media, The system comprises a frame positioned opposite the aforementioned transport roller, The aforementioned conveyor roller is The axis and Includes a roller that is detachable from the shaft, A sheet material that is removable from the surface is arranged on the surface of the frame along the extending direction of the axis. A media transport device characterized by the following features.

2. A media transport device according to claim 1, The surface of the sheet material opposite to the aforementioned surface is adhesive. A media transport device characterized by the following features.

3. A media transport device according to claim 1, The frame is provided with a sheet holder at a position opposite to the transport roller, The sheet material is held in the sheet holder in a removable manner. A media transport device characterized by the following features.

4. A media transport device according to claim 1, The surface of the frame is located vertically above the roller. A media transport device characterized by the following features.

5. A media transport device according to claim 1, The aforementioned sheet material is made up of multiple sheets that can be sequentially removed and laminated. A media transport device characterized by the following features.

6. A media transport device according to claim 5, Each sheet material has its own identification mark. A media transport device characterized by the following features.

7. A media transport device according to claim 5, A transport roller unit comprising the roller and the shaft, The aforementioned transport roller unit is mounted in a replaceable manner. Of the multiple sheet materials mentioned above, the bottommost sheet material is marked with a replacement indication that suggests the replacement of the transport roller unit. A media transport device characterized by the following features.

8. A media transport device according to claim 1, The roller has a flange at the axial end, The aforementioned flange is The length dimension of the shaft in the extending direction is 50% or more of the length dimension of the roller in the extending direction of the shaft. The outer diameter of the flange is 80% or more of the outer diameter of the roller. A media transport device characterized by the following features.

9. A media transport device according to any one of claims 1 to 8, A processing unit is located downstream in the conveying direction of the media conveying device and performs processing on the media, Electronic devices equipped with these features.

10. A conveyor roller positioned opposite the frame and supported so as to be rotatable, The aforementioned conveyor roller is The axis and The shaft is detachably fitted with a roller, The roller has a flange at the axial end, The aforementioned flange is The length dimension of the shaft in the extending direction is 50% or more of the length dimension of the roller in the extending direction of the shaft. The outer diameter is 80% or more of the outer diameter of the roller. A transport roller characterized by the following features.

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