Sheet feeder and recording apparatus

Abstract

To suppress deterioration in the quality of a recording apparatus.SOLUTION: Disclosed is a sheet feeder which holds a roll sheet 201 fitted with a flange member 124, pulls out a sheet from the roll sheet 201, and feeds the same. The sheet feeder comprises: a body having a first positioning part and a second positioning part; a holding unit 180 configured to be attachable / detachable to each of the first positioning part and the second positioning part of the body, and rotatably holding one end of the roll sheet 201 via the flange member 124; and a pressing unit 802 pressing an outer circumferential face of the roll sheet 201 held by the holding unit 180 in a state where the holding unit 180 is fitted to the first positioning part. In a state where the holding unit 180 is fitted to the second positioning part, the pressing unit 802 abuts against the holding unit 180, and is fixed at a position where it is separated from the flange member fitted to the roll sheet 201.SELECTED DRAWING: Figure 13

Description

[Technical Field]

[0001] The present invention relates to a sheet feeding device and a recording device equipped with the sheet feeding device. [Background technology]

[0002] Some recording devices use roll sheets, such as recording paper or film, wound up as recording media, to record images based on image information. Among such recording devices, a known configuration includes a sheet feeder that pulls out the sheet from the roll sheet and feeds it to an image recording unit.

[0003] In a sheet feeder that supports a rolled sheet and draws out the sheet, a pressing member such as a roller that presses the outer circumferential surface of the rolled sheet is sometimes provided for the purpose of suppressing slack in the sheet due to the rotation of the rolled sheet, etc. Patent Document 1 discloses a configuration in which a plurality of rollers that press the outer circumferential surface of the rolled sheet are provided along the axial direction of the rolled sheet. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-171732 Summary of the Invention [Problem to be solved by the invention]

[0005] It is desirable for a sheet feeder to be able to handle roll sheets of various sizes. However, with the above-described configuration, depending on the width of the sheet (the axial length of the roll sheet), the pressing member may come into contact with the flange member attached to the roll sheet, causing noise and other problems that could degrade the quality of the recording device.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to suppress a deterioration in the quality of a recording device. [Means for solving the problem]

[0007] In order to achieve the above object, the sheet feeding device of the present invention comprises: A sheet feeding device that holds a roll sheet to which a flange member is attached and draws and feeds a sheet from the roll sheet, a main body having a first positioning portion and a second positioning portion provided at a different position relative to the first positioning portion in a first direction; a holding unit configured to be detachable from each of the first positioning portion and the second positioning portion of the main body, and configured to rotatably hold one end of the roll sheet in the axial direction via the flange member; a pressing unit that presses an outer peripheral surface of the roll sheet held by the holding unit when the holding unit is attached to the first positioning portion; Equipped with When the holding unit is attached to the second positioning portion, the pressing unit abuts against the holding unit and is fixed at a position spaced apart from the flange member attached to the roll sheet. [Effects of the Invention]

[0008] According to the present invention, it is possible to suppress deterioration in the quality of the recording device. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic perspective view of a recording apparatus. [Figure 2] FIG. 2 is a schematic cross-sectional view of a recording apparatus. [Figure 3] 10 is an explanatory diagram of the operation of correcting the difference between the left and right skew and slack of the roll sheet. FIG. [Figure 4] FIG. 2 is a schematic block diagram of a control configuration of the printing apparatus. [Figure 5] FIG. 2 is a schematic perspective view of the recording apparatus with the cover open. [Figure 6] 10A and 10B are explanatory diagrams illustrating a method of attaching a flange member to a roll sheet. [Figure 7] FIG. 2 is an external perspective view of a reference-side flange. [Figure 8] 10A and 10B are explanatory diagrams of a method for setting a wide roll sheet. [Figure 9] FIG. 10 is a perspective view showing a portion including a non-reference side end portion of the roll setting portion. [Figure 10] 5A and 5B are explanatory views of a non-reference side flange holding portion according to the first embodiment. [Figure 11] FIG. 4 is a perspective view showing a reference side end portion of a roll setting portion. [Figure 12] 10A and 10B are explanatory diagrams illustrating a method for setting a narrow roll sheet. [Figure 13] FIG. 10 is an explanatory diagram of a roll setting unit in which a roll sheet with a wide paper width is set. [Figure 14] FIG. 10 is an explanatory diagram of a roll setting unit in which a roll sheet with a narrow paper width is set. [Figure 15] 10 is an explanatory diagram of a non-reference side flange holding portion according to the second embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the components described in the following embodiments are merely examples, and the configuration and various conditions of the device to which the present invention is applied can be modified or changed as appropriate without departing from the spirit of the present invention, and the present invention is not limited to the following embodiments. For example, the dimensions, materials, shapes, and relative positions of the components described in the following embodiments can be modified as appropriate depending on the configuration and various conditions of the device to which the present invention is applied, and unless otherwise specified, the present invention is not limited to the following embodiments.

[0011] The following describes an embodiment in which the present invention is applied to a recording apparatus that includes a sheet feeder that feeds sheet-shaped recording media from a supported roll sheet and records an image on the recording media based on image information. Recording apparatuses to which the present invention can be applied include image forming apparatuses such as printers, copiers, and facsimiles. Recording apparatuses also include multifunction devices that add other functions, such as a printer function, a facsimile function, a document reading function, or an imaging function, and system devices configured by connecting the recording apparatus to a host machine such as a computer. In the following description, the term "sheet" refers to a recording medium, and the material is not limited to paper or plastic sheets. In the following embodiment, the roll sheet is supported by the sheet feeder with flange members inserted into the left and right paper tubes of the roll sheet.

[0012] The sheet feeding device of the present invention can be applied to, for example, a flatbed scanner device, or a copying machine, facsimile, multifunction machine, etc. that combines a flatbed scanner device with a printing device, etc. Hereinafter, as an example of a sheet feeding device to which the present invention is applied, a recording device including a sheet feeding device and a recording unit that records an image will be described.

[0013] First Embodiment A recording device 2 according to an embodiment of the present invention will be described below with reference to the drawings. Note that the same reference numerals indicate the same or corresponding parts throughout the drawings. The X direction, Y direction, and Z direction shown as appropriate in the drawings are the width direction of the recording device 2, the depth direction, and the height direction, respectively. In the embodiment described below, the X direction, Y direction, and Z direction are mutually orthogonal. Furthermore, a roll sheet 201 is set in the recording device 2 so that the paper width direction is approximately parallel to the X direction.

[0014] (Recording device) The following describes the schematic configuration and operation of a recording device 2 according to a first embodiment of the present invention. Fig. 1 is a schematic perspective view of the recording device 2. Fig. 2 is a schematic cross-sectional view of the recording device 2. The recording device 2 is provided with a roll setting unit 20 for setting a roll sheet 201, and a recording unit 30 for recording an image on a sheet 202 pulled out from the roll sheet 201.

[0015] The main body 2a of the recording device 2 is provided with a cover 50 as an opening / closing member for opening and closing the roll setting unit 20 in which the roll sheet 201 is set. By opening the cover 50, the roll setting unit 20 is exposed, and the user can attach or detach the roll sheet 201 to or from the roll setting unit 20. By closing the cover 50, it is possible to prevent dust and dirt from adhering to the roll sheet 201.

[0016] The recording device 2 is also provided with an operation panel 6 that allows the user to input various settings and commands and check information about the recording device 2. Based on instructions input via the operation panel 6, the recording device 2 can perform recording operations such as transporting a recording medium and recording an image on the recording medium.

[0017] The roll setting unit 20 accommodates the roll sheet 201 therein and rotatably supports the roll sheet 201. The roll setting unit 20 functions as a sheet supply device (sheet supply unit) that pulls out the sheet 202 from the roll sheet 201 and supplies the sheet 202 to the recording unit 30.

[0018] In the first embodiment, the rolled sheet 201 is supported so that the axial direction of the rolled sheet 201 is aligned with the width direction (X direction, first direction) of the recording device 2. Furthermore, the sheet pulled out from the rolled sheet 201 supported by the roll setting unit 20 is transported toward the front side of the recording device 2 along the depth direction (Y direction) of the recording device 2.

[0019] The roll setting unit 20 is provided with two flange holding units: a reference-side flange holding unit 71 and a non-reference-side flange holding unit 180. The rolled sheet 201 has a reference-side flange 123 attached to one axial end and a non-reference-side flange 124 attached to the other axial end. The reference-side flange 123 is held by the reference-side flange holding unit 71, and the non-reference-side flange 124 is held by the non-reference-side flange holding unit 180, thereby holding the rolled sheet 201 in the roll setting unit 20. In other words, the roll setting unit 20 can rotatably hold one end and the other end of the rolled sheet 201 via the two flange members.

[0020] Inside the recording device 2, there are provided a lower guide 8 that guides the sheet 202 between the roll setting unit 20 and the recording unit 30 in the conveying direction of the sheet 202, and a conveying roller 9 and a driven roller 10 that come into contact with each other to form a nip portion. In the following description, unless otherwise specified, the conveying direction of the sheet 202 refers to the direction in which the sheet 202 moves from the roll setting unit 20 to the recording unit 30. The sheet 202 pulled out from the roll sheet 201 is guided by the lower guide 8 and conveyed to the nip portion formed by the conveying roller 9 and the driven roller 10.

[0021] When the leading edge of the sheet 202 reaches the nip portion between the conveying roller 9 and the driven roller 10, the conveying roller 9 is rotated by a conveying motor (not shown), and the sheet 202 is sandwiched between the conveying roller 9 and the driven roller 10. With the leading edge of the sheet 202 held at the nip portion, the conveying roller 9 is further rotated, and the sheet 202 is further pulled out from the roll sheet 201 and conveyed to the recording unit 30.

[0022] The recording unit 30 is a recording unit that includes a platen 11, a carriage 12, a recording head 13, and a carriage shaft 14. A sheet 202 sandwiched between a conveying roller 9 and a driven roller 10 is conveyed onto the platen 11, which is located downstream in the conveying direction. The platen 11 and the recording head 13 are located opposite each other, and the sheet 202 is conveyed between them. In the recording unit 30, the platen 11 guides and supports the rolled sheet 201 from its back surface (the surface opposite to the recording surface), ensuring a gap between the recording head 13 and the rolled sheet 201.

[0023] The carriage 12 carries a recording head 13, which is an image recording means, and is supported and guided so as to be movable back and forth in the ±X directions (main scanning direction) along a carriage shaft 14 that extends in the X direction and serves as a scanning guide. The recording head 13 has a plurality of ejection ports (nozzles) that eject ink arranged in the Y direction. While the carriage 12 is moving, these ejection ports eject ink vertically downward in accordance with image data. After one line of image is recorded by the ejection operation of the recording head 13 and the movement of the carriage 12, the sheet 202 is again conveyed a predetermined pitch in the conveyance direction along the Y direction by the conveyance roller 9 and driven roller 10. The carriage 12 is then moved again to record the next line of image. This process is repeated until an image is recorded on the entire page of the sheet 202.

[0024] A cutter 16 is provided downstream of the recording unit 30 in the conveying direction. The cutter 16 is a cutting means (cutting unit) that cuts the rolled sheet 201 to a predetermined length. Note that the recording operation when cut paper is used as the recording medium is performed in the same manner as the recording operation for the rolled sheet 201. An openable and closable upper cover 24 is provided above the recording unit 30.

[0025] Next, with reference to Figures 3(a) and (b), the operation of correcting the difference between left and right skew and slack of the rolled sheet 201 will be described. Figures 3(a) and (b) are explanatory diagrams of the operation of correcting the difference between left and right skew and slack of the rolled sheet 201. Figure 3(a) is a perspective view showing the internal configuration of the recording device 2 in which the rolled sheet 201 is set. Figure 3(b) is a schematic top view explaining the operation of correcting the difference between left and right skew and slack of the rolled sheet 201.

[0026] If the user causes the sheet 202 to reach the nip between the conveyance roller 9 and the driven roller 10 while it is skewed or while one of the left and right sides of the rolled sheet 201 is loose, the leading edge of the rolled sheet 201 may be sandwiched between the conveyance roller 9 and the driven roller 10. If the rolled sheet 201 is conveyed onto the platen 11 in this state, wrinkles or a jam may occur. To prevent such problems from occurring, the recording apparatus 2 according to the first embodiment is configured to be able to perform an operation to correct the difference between the left and right skew and looseness of the rolled sheet 201 before the leading edge of the rolled sheet 201 is sandwiched.

[0027] The roll setting section 20 includes a plurality of pressing units 802 that press the outer peripheral surface of the rolled sheet 201 for the purpose of suppressing slack in the sheet 202 wound around the rolled sheet 201. The plurality of pressing units 802 are all provided on the inner surface of the cover 5 (the surface that faces the inside of the recording device 2 when the cover 5 is closed). In the first embodiment, pressing unit 802A, pressing unit 802B, pressing unit 802C, and pressing unit 802D are arranged side by side in the X direction in order from closest to the reference-side flange holding section 71. These pressing units 802A to 802D all have the same configuration, and will be simply referred to as pressing unit 802 unless there is a need to distinguish them.

[0028] A first detection sensor 800 and a second detection sensor 806 are provided upstream of the conveying roller 9 and the driven roller 10 in the conveying direction to detect the passage of the sheet 202. When the roll sheet 201 is set in the recording device 2, the user manually feeds the sheet 202 in the conveying direction, and then the recording device 2 automatically performs the sheet feeding operation.

[0029] After setting the roll sheet 201 in the roll setting unit 20, the user first pulls out the sheet 202 from the roll sheet 201 and feeds it in the conveyance direction. When the leading edge of the sheet 202 reaches a first detection sensor 800 installed on the conveyance path, a buzzer (not shown) sounds to notify the user that subsequent sheet feeding operations will be performed automatically. The user hears the buzzer and closes the cover 50. Four pressing units 802 are attached to the cover 50, and when the cover 50 is closed, these come into contact with the outer circumferential surface of the roll sheet 201. In other words, the pressing units 802 move toward and away from the roll sheet 201 set in the roll setting unit 20 in conjunction with the opening and closing operation of the cover 50.

[0030] A flange gear 125 is provided on the end of the reference-side flange 123 opposite to the end where it is attached to the rolled sheet 201. The rolled sheet 201 can be rotated by the flange gear 125, and by rotating the rolled sheet 201 forward and backward, the rolled sheet 201 can be transported within the paper transport path. The reference-side flange 123 has a flange surface 131 that abuts against one end face of the rolled sheet 201 in the axial direction, and the non-reference-side flange 124 has a flange surface 135 that abuts against the other end face of the rolled sheet 201 in the axial direction.

[0031] After the leading edge of the sheet 202 reaches the first detection sensor 800 and the cover 50 is closed, the rolled sheet 201 is rotated by the flange gear 125 to move the leading edge of the sheet 202 downstream in the conveyance direction. The drive stops when the second detection sensor 806 detects the leading edge of the sheet 202. The rolled sheet 201 is then rotated in the opposite direction to move the sheet 202 upstream in the conveyance direction, and stops when the first detection sensor 800 detects the leading edge of the sheet 202. The leading edge of the sheet 202 reciprocates between the first detection sensor 800 and the second detection sensor 806 three times in total. This operation causes the side edges of the rolled sheet 201 to repeatedly abut against the flange surface 131 of the reference-side flange 123 and the flange surface 135 of the non-reference-side flange 124, thereby correcting any skew or slack in the rolled sheet 201.

[0032] Next, the control configuration of the recording device 2 will be described with reference to Fig. 4. Fig. 4 is a schematic block diagram showing an example of the control configuration of the recording device 2 according to the first embodiment.

[0033] 4, an externally connected host device 401 transmits an image recording command generated by the host device 401 to a main control unit 403 of the recording device 2. The control unit 402 has a main control unit 403 and an image recording control unit 404. The main control unit 403 is equipped with a CPU 406, a ROM 407, and a RAM 408, which serve as calculation means. In the main control unit 403, the CPU 406 controls the entire recording device 2 in accordance with various programs and parameters stored in the ROM 407, using the RAM 408 as a work area. The image recording control unit 404 controls the transport motor 51, carriage motor 54, recording head 13, cutter 16, etc., under the instructions of the main control unit 403.

[0034] (How to set the roll sheet) A detailed description will be given of a method for setting the roll sheet 201 in the roll setting unit 20 of the recording apparatus 2. Figure 5 is a schematic perspective view of the recording apparatus 2 with the cover 50 open.

[0035] 5, with the cover 50 open, the rolled sheet 201 can be set in the recording device 2. The rolled sheet 201 is attached with the reference side flange 123 and the non-reference side flange 124, which are flange members, attached to both ends of the rolled sheet 201 in the axial direction.

[0036] (Setting flange parts on roll sheet) 6(a) and (b) are explanatory diagrams of a method for attaching flange members (reference side flange 123 and non-reference side flange 124) to rolled sheet 201. FIG. 6(a) shows the state before the reference side flange 123 and non-reference side flange 124 are attached to rolled sheet 201. FIG. 6(b) shows the state after the reference side flange 123 and non-reference side flange 124 are attached to rolled sheet 201. FIG. 7 is an external perspective view of the reference side flange 123.

[0037] The reference-side flange 123 is a flange member having a flat flange surface 131 and a flange core portion 132 that protrudes from the flange surface 131. The reference-side flange 123 is a flange member that further includes a flange sliding shaft portion 122 that extends on the opposite side of the flange core portion 132 from the flange surface 131, and a flange gear 125 that is provided on the tip side of the flange sliding shaft portion 122. A first fitting member 136 that fits into a hollow hole portion 201a of the roll sheet 201 is provided on the tip side of the flange core portion 132 that is away from the flange surface 131. A second fitting member 137 that fits into the hollow hole portion 201a is provided on the base side of the flange core portion 132 that is closer to the flange surface 131.

[0038] The non-reference side flange 124 is a flange member having a curved flange surface 135, a flange core portion 134 protruding from the flange surface 135, and a flange sliding shaft portion 73 extending on the opposite side of the flange core portion 134 relative to the flange surface 135. Also, similar to the reference side, a first fitting member 138 that fits into a hollow hole portion 201a of the roll sheet 201 is provided on the tip side of the flange core portion 134 away from the flange surface 135. Also, a second fitting member 139 that fits into the hollow hole portion 201a is provided on the base side of the flange core portion 134 closer to the flange surface 135.

[0039] When attaching the reference-side flange 123 to the rolled sheet 201, first, the flange core 132 is inserted into the hollow hole 201a of the rolled sheet 201, and the first fitting member 136 is fitted into the hollow hole 201a. Then, the flange core 132 is inserted further in, and the second fitting member 137 is fitted into the hollow hole 201a, thereby attaching the reference-side flange 123 to one end of the rolled sheet 201. The non-reference-side flange 124 is attached in the same manner as the reference-side flange 123. That is, the flange core 134 is inserted into the hollow hole 201a, and the first fitting member 138 and the second fitting member 139 are fitted into the hollow hole 201a, respectively, and the non-reference-side flange 124 is attached to the other end of the rolled sheet 201.

[0040] As shown in FIG. 7 , the outermost surface 123a of the reference-side flange 123 is polygonal when viewed in the axial direction of the rolled sheet 201. With this configuration, when the rolled sheet 201 with the reference-side flange 123 and non-reference-side flange 124 attached is removed from the recording device 2 and temporarily placed on a flat workbench, for example, the polygonal shape of the reference-side flange 123 prevents the rolled sheet 201 from rolling. This prevents the rolled sheet 201 from falling off the workbench, for example. While the outermost surface of the non-reference-side flange 124 is circular in the first embodiment, this configuration is not limited thereto. For example, the outermost surfaces of the reference-side flange 123 and the non-reference-side flange 124 may have a common polygonal shape. This configuration prevents the user from accidentally attaching the left and right flanges, improving operability and preventing mis-attachment. Similarly to the outermost peripheral surface 123a of the reference-side flange 123, the outermost peripheral surface of the non-reference-side flange 124 is formed in a polygonal shape, so that the rolled sheet 201 can be placed more stably when temporarily placed.

[0041] (Roll sheet set on the main unit) Next, a method for setting the roll sheet 201 in a state in which the reference side flange 123 and the non-reference side flange 124 are set in the recording device 2 will be described. 8A and 8B are explanatory diagrams of a method for setting a wide rolled sheet 201. Fig. 8A shows the state before the rolled sheet 201 is set in the recording device 2. Fig. 8B shows the state after the rolled sheet 201 has been set in the recording device 2.

[0042] 8(a), the flange sliding shaft 122 is set in the reference-side flange holding portion 71, and the flange sliding shaft 73 is set in the non-reference-side flange holding portion 180. Therefore, when the user performs this setting, the flange sliding shaft 122 is aimed at the reference-side flange holding portion 71, and the flange sliding shaft 73 is aimed at the non-reference-side flange holding portion 180. When the cover 50 is open, even if the flange sliding shaft 122 approaches the reference-side flange holding portion 71 and the flange sliding shaft 73 approaches the non-reference-side flange holding portion 180, the target positions are visible to the user. This configuration makes it easy to align the roll sheet 201 when setting it in the recording device 2. 8(b), the flange sliding shaft portion 122 and the reference side flange holding portion 71, and the flange sliding shaft portion 73 and the non-reference side flange holding portion 180 are visible even after the rolled sheet 201 has been set in the recording device 2. Therefore, it is clear that these parts are visible while the rolled sheet 201 is being set.

[0043] (Flange holding part) The roll setting unit 20 of the recording device 2 is configured to be able to change the X-direction position of the non-reference side flange holding unit 180 that supports the non-reference side flange sliding shaft portion 73 so that roll sheets 201 with different paper widths can be set. In other words, the non-reference side flange holding unit 180 is a holding unit that is configured to be detachable from the main body 2a that constitutes the roll setting unit 20. Note that the non-reference side flange holding unit 180 as a holding unit may be configured from multiple parts or from a single part.

[0044] 9(a), (b), and (c) are perspective views showing a portion including the non-reference side end of the roll setting unit 20, as viewed in the direction A in FIG. 5. FIG. 9(a) shows how the non-reference side flange holding unit 180 is set in the roll setting unit 20. FIG. 9(b) shows how the non-reference side flange holding unit 180 is attached to a position where it holds a wide rolled sheet 201. FIG. 9(c) shows how the non-reference side flange holding unit 180 is attached to a position where it holds a narrow rolled sheet 201. FIGS. 10(a), (b), and (c) are explanatory diagrams of the non-reference side flange holding unit 180. FIG. 10(a) is a perspective view of the non-reference side flange holding unit 180. FIG. 10(b) is a view of the non-reference side flange holding unit 180 as viewed in the X direction, as viewed in the E direction in FIG. 10(a). FIG. 10(c) is a diagram illustrating the positional relationship in the width direction of the non-reference side flange holding portion 180 and the non-reference side flange 124, as viewed in the direction F in FIG. 10(a).

[0045] The non-reference side flange holding portion 180 is provided with a U-shaped bearing 187. The bearing 187 opens vertically upward in an opening direction Od (second direction) facing the front side of the recording device 2, and is formed as a groove penetrating the width direction (X direction) of the recording device 2. That is, the opening direction Od intersects with an orthogonal direction M, which is perpendicular to the installation surface 2b formed on the main body 2a of the recording device 2 on which the non-reference side flange holding portion 180 is installed, so as to be inclined toward the front side. In the first embodiment, the installation surface 2b is a horizontal plane, and the orthogonal direction M is parallel to the vertical direction. A user can fit the flange sliding shaft portion 73 into the bearing 187 from the opening side in the direction opposite to the opening direction Od. FIG. 10(b) shows an attachment / detachment trajectory L when inserting and detaching the flange sliding shaft portion 73 into and from the bearing 187.

[0046] The non-reference side flange holding portion 180 is provided with a convex portion 188 that protrudes in a direction away from the installation surface N. When viewed in the X direction, the tip 188a of the convex portion 188 is formed in a substantially circular shape. The convex portion 188 extends in a direction substantially perpendicular to the installation surface 2b of the main body 2a. That is, the protruding direction of the convex portion 188 intersects with the attachment / detachment trajectory L of the rolled sheet 201. This prevents the convex portion 188 from interfering with the attachment / detachment of the rolled sheet 201, and also minimizes the amount of protrusion of the convex portion 188.

[0047] The position of the convex portion 188 in the width direction (X direction) within the non-reference side flange holding portion 180 will be described using FIG. 10(c). As shown in FIG. 10(c), the position of the convex portion 188 in the width direction is on the side closer to the non-reference side flange 124, and is formed so as to be close to the non-reference side flange 124. In this way, when the non-reference side flange holding portion 180 is placed in a predetermined position, the position of the convex portion 188 can be brought as close as possible to the pressing unit 802, thereby minimizing the size of the pressing unit 802. The function of the convex portion 188 will be described later.

[0048] The non-reference side flange holding portion 180 is provided with positioned portions 182. The positioned portions 182 are multiple cylindrical protrusions that protrude downward from the bottom surface. The positioned portions 182 are configured to be engageable with multiple positioning portions provided on the installation surface 2b of the main body 2a. The installation surface 2b is formed with a positioning hole 184 as a first positioning portion, a positioning hole 185 as a second positioning portion, and a positioning hole 186 as a third positioning portion. These positioning holes are arranged in the width direction in the order of positioning hole 184, positioning hole 185, and positioning hole 186, from the farthest from the reference side flange holding portion 71. The non-reference side flange holding portion 180 is positioned relative to the recording device 2 by inserting the positioned portions 182 into one of these positioning holes.

[0049] Although the first embodiment is configured to have three positioning portions, this is not limited to this configuration. In other words, the widthwise positions and number of positioning portions can be changed as appropriate depending on the type of paper width of the roll sheet 201 that is expected to be used. Also, in the illustrated example, two positioning holes are provided for each positioning hole, and the non-reference side flange holding portion 180 is also provided with a number of positioned portions corresponding to the positioning holes, but the arrangement positions and number of these can also be changed as appropriate.

[0050] In the first embodiment, the insertion position of the positioned portion 182 when using a roll sheet 201 of the widest width that can be set in the recording device 2 is the positioning hole 184. Also, by inserting the positioned portion 182 into the positioning hole 185, it is possible to set a roll sheet 201 with a narrower paper width than when inserted into the positioning hole 184. Furthermore, by inserting the positioned portion 182 into the positioning hole 186, it is possible to set a roll sheet 201 with a narrower paper width than when inserted into the positioning hole 185. In other words, the first embodiment is configured to be compatible with three different paper widths.

[0051] FIG. 9(b) shows the non-reference side flange holding portion 180 placed at a position corresponding to the positioning hole 184. When setting a rolled sheet 201 with the maximum paper width that the recording device 2 can accommodate, the non-reference side flange holding portion 180 is placed at a position where the positioned portion 182 is inserted into the positioning hole 184 (the position in FIG. 9(b)). FIG. 9(c) shows the non-reference side flange holding portion 180 placed at a position corresponding to the positioning hole 186. When setting a rolled sheet 201 with the maximum paper width that the recording device 2 can accommodate, the non-reference side flange holding portion 180 is placed at a position where the positioned portion 182 is inserted into the positioning hole 186 (the position in FIG. 9(c)). The case where the non-reference side flange holding portion 180 is placed at a position corresponding to the positioning hole 185 is not shown because it is not significantly different from the case of the positioning holes 184 and 186.

[0052] 11 is a perspective view showing the reference side end of the roll setting unit 20, as viewed from the direction B in FIG. 5. When the reference side flange 123 is set in the recording device 2, the flange sliding shaft 122 is placed on the reference side flange holding unit 71. In this state, the flange gear 12 5 meshes with a drive gear 72 provided in the recording device 2. The drive gear 72 is connected to a roll drive motor (not shown) provided in the recording device 2. The roll drive motor transmits power to the flange gear 125 via the drive gear 72, and the rolled sheet 201 and the non-reference side flange 124 are driven forward and backward together with the reference side flange 123. This enables the rolled sheet 201 to be fed.

[0053] In this way, in the first embodiment, the rolled sheet 201 is held by the reference-side flange 123 and the non-reference-side flange 124, and the rolled sheet 201 is supported by the non-reference-side flange holding portion 180 and the reference-side flange holding portion 71. In this way, in the first embodiment, the roll setting unit 20 and the recording device 2 are configured assuming that rolled sheets 201 of a plurality of paper widths will be used.

[0054] Furthermore, the reference side flange 123 is fitted onto the end of the rolled sheet 201 so that the reference side end position of the rolled sheet 201 abuts against the flat flange surface 131. With this configuration, the reference side end of the rolled sheet 201 is positioned at a fixed position relative to the recording device 2.

[0055] 12(a) and (b) are explanatory diagrams of how to set a narrow rolled sheet 201, showing the state in which the non-reference side flange holding portion 180 is positioned by the positioning hole 186. FIG. 12(a) shows the state before the rolled sheet 201 is set in the recording device 2. FIG. 12(b) shows the state after the rolled sheet 201 has been set in the recording device 2.

[0056] As shown in FIG. 12( a), the flange sliding shaft 122 is set in the reference-side flange holding portion 71, and the flange sliding shaft 73 is set in the non-reference-side flange holding portion 180, just as when setting the rolled sheet 201 with a wide paper width. Therefore, just as when setting the rolled sheet 201 with a wide paper width, the rolled sheet 201 can be set in the recording apparatus 2 with good visibility. Also, as shown in FIG. 12( b), even after setting the rolled sheet 201 in the recording apparatus 2, the flange sliding shaft 122 and the reference-side flange holding portion 71, and the flange sliding shaft 73 and the non-reference-side flange holding portion 180 are visible. Therefore, just as when setting the rolled sheet 201 with a wide paper width, even when the rolled sheet 201 is set, each holding portion and shaft remain visible, making it easy to set the rolled sheet 201 in the recording apparatus 2. This series of operations completes the setting of the narrow-width rolled sheet 201 in the recording apparatus 2.

[0057] (When a wide roll sheet is set) The set state of the roll sheet 201 will be described in more detail. In particular, the action of the convex portion 188 of the non-reference-side flange holding portion 180 when opening and closing the cover 50 will be described in detail. First, an example will be described in which the non-reference-side flange holding portion 180 is positioned in the positioning hole 184 farthest from the reference-side flange holding portion 71 and a wide roll sheet 201 is set in the roll setting unit 20.

[0058] As described above, the cover 50 is equipped with a plurality of pressing units 802 that press the outer peripheral surface of the roll sheet 201. FIGS. 13(a) to 13(c) are explanatory diagrams of the roll setting section 20 in which a wide roll sheet 201 is set. FIG. 13(a) is a perspective view showing a state in which a wide roll sheet 201 is set in the recording device 2 and the cover 50 (not shown) is closed, and shows the positional relationship between the pressing units 802 and the non-reference side flange holding section 180. FIG. 13(b) is a side view seen in direction C (width direction) of FIG. 13(a), showing the pressing units 802 pressing the outer peripheral surface of a new roll sheet 201. FIG. 13(c) is a cross-sectional view of the cover 50 and is an explanatory diagram of the configuration of the pressing units 802.

[0059] The pressing unit 802 is composed of a pressing roller 203, a pressing roller holding portion 204, a pressing arm 205, and a pressing spring 206. The pressing roller 203 is held by the pressing roller holding portion 204 so as to be rotatable around a convex portion 207 provided on the pressing roller 203 that protrudes in the width direction as a fulcrum. In the first embodiment, two pressing rollers 203 are held by the pressing roller holding portion 204. The rotation axes of the pressing roller 203, the pressing roller holding portion 204, and the pressing arm 205 are parallel to each other, and in the first embodiment, are parallel to the width direction (X direction) of the recording device 2.

[0060] The pressure roller holding portion 204 is held by the pressure arm 205 so as to be rotatable around a convex portion 208 provided on the pressure roller holding portion 204 and protruding in the width direction as a fulcrum. The pressure arm 205 is an arm held by the cover 50 so as to be rotatable around a convex portion 209 provided on the pressure arm 205 and protruding in the width direction as a fulcrum.

[0061] 13(b), two pressure rollers 203 arranged side by side along the circumferential direction of the roll sheet 201 come into contact with the outer circumferential surface of the roll sheet 201. Because the pressure roller holding portion 204 and the pressure arm 205 are configured to be rotatable, both pressure rollers 203 come into contact with the outer circumferential surface of the roll sheet 201 regardless of the diameter of the roll sheet 201.

[0062] The pressure spring 206 is a biasing member that biases the pressure arm 205 in the rotational direction. The pressure spring 206 has a fixed arm 210 that abuts against the inside of the cover 50, and an acting arm (not shown) that abuts against the pressure arm 205. The pressure arm 205, together with the pressure roller 203 and the pressure roller holding portion 204, is constantly receiving force from the pressure spring 206 in a direction that presses the roll sheet 201.

[0063] 13(a), the pressure rollers 203 abut against the rolled sheet 201, and the external force from the cover 50, i.e., the closing force, is transmitted to the action arm of the pressure spring 206. This causes the pressure roller holding portion 204 and pressure arm 205 of each pressure unit 802 to rotate, and the pressure unit 802 moves so that the pressure rollers 203 press against the rolled sheet 201. Furthermore, at the moment when the pressure rollers 203 abut against the rolled sheet 201, the pressure roller holding portion 204 rotates with the convex portion 208 as a fulcrum so that the two pressure rollers 203 follow the surface of the rolled sheet 201. This allows the rolled sheet 201 to be pressed more accurately.

[0064] When a wide roll sheet 201 is set in the roll setting section 20, all of the pressing units 802 move to a position where they press the roll sheet 201 (the position shown in FIG. 13(b)). Even if the roll diameter of the roll sheet 201 becomes smaller as printing by the recording device 2 progresses, the pressing spring 206 causes the pressing roller 203 to follow the outer circumferential surface of the roll sheet 201, preventing the roll from loosening. Furthermore, since the non-reference side flange holding section 180 is positioned as shown in FIG. 9(b), the convex portion 188 of the non-reference side flange holding section 180 is in a position where it does not come into contact with other components.

[0065] (When a roll sheet with a narrow paper width is set) Next, an exemplary state will be described in which the non-reference side flange holding portion 180 is positioned in the positioning hole 185 and a narrow rolled sheet 201 is set in the roll setting portion 20. FIGS. 14(a) to 14(d) are explanatory diagrams of the roll setting portion 20 in which a narrow rolled sheet 201 is set. FIG. 14(a) is a front view showing a state in which the narrow rolled sheet 201 is set in the recording device 2 and before the multiple pressing units 802 come into contact with the rolled sheet 201. FIG. 14(b) is a perspective view showing a state in which the cover 50 is completely closed from the state shown in FIG. 14(a). In the state shown in FIG. 14(b), pressing units 802A, 802B, and 802C come into contact with the rolled sheet 201, and pressing unit 802D comes into contact with the convex portion 188 of the non-reference side flange holding portion 180 and is restricted from moving, and the rolled sheet 2 14(c) is a side view seen in direction D of FIG. 14(b). FIG. 14(d) is a side view showing a case where the outermost peripheral surface 124b of the non-reference side flange 124 is configured in a polygonal shape.

[0066] When setting a narrow rolled sheet 201, the user attaches the non-reference side flange holding portion 180 to the installation surface 2b at a position where it is aligned with the positioning hole 185, and then sets the rolled sheet 201 in the recording device 2. At this time, the non-reference side flange 124 attached to the rolled sheet 201 is supported by the non-reference side flange holding portion 180 which is aligned with the positioning hole 185.

[0067] 14(a), the widthwise (X-direction) position of the pressing unit 802D overlaps with the widthwise position of the non-reference-side flange 124 held by the non-reference-side flange holding portion 180. Here, "the widthwise positions of the pressing unit 802D and the non-reference-side flange 124 overlap" means that at least a portion of the pressing unit 802D and a portion of the non-reference-side flange 124 are at the same position in the widthwise direction. More specifically, the pressing unit 802D and the non-reference-side flange 124 overlap when viewed in the vertical direction (Z-direction). In this example, when the widthwise positions of the pressing unit 802D and the non-reference-side flange 124 overlap, the non-reference-side flange 124 is located within the movable (rotatable) range of the pressing unit 802D.

[0068] The roll setting unit 20 is configured so that the pressing unit 802 can always press the rolled sheet 201 appropriately, regardless of which of the multiple types of rolled sheet 201 expected to be used in the recording device 2 is set. In this configuration, depending on the paper width of the rolled sheet 201, the widthwise position of one of the pressing units 802 may overlap with the widthwise position of the non-reference side flange 124, as shown in FIG. 14(a).

[0069] In the recording device 2 according to the first embodiment, depending on the paper width of the rolled sheet 201, the pressing units 802C and 802D are disposed in locations where their widthwise positions may overlap with the widthwise position of the non-reference-side flange 124. On the other hand, the pressing units 802A and 802B are disposed in locations where their widthwise positions do not overlap with the widthwise position of the non-reference-side flange 124, regardless of the position of the non-reference-side flange holding portion 180. Furthermore, because the reference-side flange 123 is held by the reference-side flange holding portion 71, whose position is fixed, the widthwise positions of the reference-side flange 123 and each pressing unit 802 do not overlap.

[0070] Next, the state in which the cover 50 is closed, as shown in FIG. 14(b), will be described. As described above, in this example, the pressing unit 802D and the non-reference-side flange 124 overlap in the width direction. Therefore, when the cover 50 is closed, the pressing unit 802D attempts to move toward a position (first position) where it presses the rolled sheet 201. At this time, if the movement of the pressing unit 802D is not restricted, the pressing unit 802D will abut against the outermost surface 124b of the non-reference-side flange 124, climbing onto the outer periphery of the non-reference-side flange 124. If the pressing unit 802D abuts against the non-reference-side flange 124, there is a risk of abnormal noise, such as a collision sound, being generated while the rolled sheet 201 is rotating.

[0071] 14(c), when the cover 50 is closed, the pressing unit 802D abuts against the convex portion 188 of the non-reference-side flange holding portion 180, restricting movement of the pressing unit 802D toward the first position. Specifically, the convex portion 188 abuts against the surface of the pressing arm 205 that faces the biasing direction of the pressing spring 206 (the direction toward which the pressing arm 205 abuts against the rolled sheet 201), and the pressing arm 205 is fixed at a second position above the first position. In other words, the convex portion 188 supports the pressing unit 802D from below so as to lift the pressing unit 802D, and the pressing unit 802D is fixed at a position spaced apart from the non-reference-side flange 124 attached to the rolled sheet 201.

[0072] The amount of protrusion of the convex portion 188 may be set so that the cover 50 closes without any problems, the convex portion 188 does not come into contact with the cover 50, and the pressing unit 802, whose movement is restricted by the convex portion 188, does not come into contact with the non-reference side flange 124. With this configuration, it is possible to suppress the impact noise that occurs when the pressing unit 802 comes into contact with a member such as the non-reference side flange 124, and to suppress a decrease in the quality of the recording device 2.

[0073] Furthermore, in the above example, the non-reference side flange holding portion 180 was positioned in the positioning hole 185, which is the second positioning portion. However, the convex portion 188 acts in the same way when the non-reference side flange holding portion 180 is positioned in the positioning hole 186, which is the third positioning portion. That is, the positioning hole 185 is formed in a position corresponding to the pressing unit 802D, and the positioning hole 186 is formed in a position corresponding to the pressing unit 802C. In other words, when the non-reference side flange holding portion 180 is attached to the positioning hole 186, the pressing unit 802C abuts the convex portion 188 of the non-reference side flange holding portion 180. The pressing unit 802C is then fixed in a position spaced apart from the rolled sheet 201 and the non-reference side flange 124 held by the non-reference side flange holding portion 180.

[0074] According to the first embodiment, since the pressing unit 802 can be prevented from contacting the non-reference-side flange 124, the outer periphery of the non-reference-side flange 124 can be polygonal, as shown in FIG. 14(d). By making the outer periphery of the non-reference-side flange 124 polygonal, similar to the reference-side flange 123, rolling of the rolled sheet 201 to which each flange member is attached can be more effectively prevented. Furthermore, since the reference-side flange 123 and the non-reference-side flange 124 can be configured to have the same shape, it is possible to prevent users from incorrectly attaching the flange members. Furthermore, even if the entire flange members are not completely identical in shape, the components that make up the reference-side flange 123 and the non-reference-side flange 124 can be shared.

[0075] Note that the configuration of the convex portion 188 shown in each figure is merely an example, and is not limited to the configuration shown in the figures as long as the pressing unit 802 can be spaced apart from the non-reference-side flange 124. For example, the Y-direction position C1 of the convex portion 209, which is the rotation fulcrum of the pressing arm 205 shown in FIG. 13(b), may be further separated from the Y-direction position C2 of the convex portion 188. By moving the abutment position of the convex portion 188 away from the convex portion 209, the convex portion 188 can be configured to support the vicinity of the tip of the pressing arm 205. With this configuration, the convex portion 188 can support the pressing unit 802 at a position spaced apart from the non-reference-side flange 124 with less force.

[0076] Second Embodiment Next, a second embodiment of the present invention will be described. The second embodiment differs from the first embodiment in the configuration of the non-reference side flange holding portion 180. Only the differences between the configuration of the second embodiment and the configuration of the first embodiment will be described below. Components in the second embodiment that are similar to those in the first embodiment will be assigned the same reference numerals and will not be described again.

[0077] 15(a) and (b) are explanatory diagrams of a non-reference side flange holding portion 180 according to the second embodiment. In the second embodiment, a rotating member 300 is attached to the non-reference side flange holding portion 180 instead of providing a convex portion 188. FIG. 15(a) is an external perspective view of the non-reference side flange holding portion 180 according to the second embodiment. FIG. 15(b) is an external perspective view showing how the non-reference side flange holding portion 180 according to the second embodiment holds the non-reference side flange 124.

[0078] The rotating member 300 is attached to the positioning portion 182 of the non-reference side flange holding portion 180 and the bearing member 302 on which the bearing 187 is formed, so as to be rotatable about a rotation axis along the X direction via a fulcrum 301. and a second end 304 located on the opposite side of the first end 303 with respect to the fulcrum 301. The fulcrum 301 is located on the rear side of the recording device 2 with respect to the bearing 187.

[0079] When the non-reference side flange holding portion 180 is not holding the non-reference side flange 124, the rotating member 300 is in a first position in which the second end 304 overlaps with the bearing 187 when viewed in the width direction (X direction). As shown in FIG. 15( a), when the rotating member 300 is in the first position, the extension direction of the rotating member 300 (the direction extending from the first end 303 to the second end 304) is inclined toward the rear side of the recording device 2 with respect to the vertical direction (Z direction). On the other hand, the bearing 187 opens at an angle toward the front side of the recording device 2 with respect to the vertical direction. Therefore, when the non-reference side flange holding portion 180 is not holding the non-reference side flange 124, the first end 303 of the rotating member 300 is located farther from the opening of the bearing 187 than the convex portion 188 in the first embodiment.

[0080] When the non-reference side flange 124 is inserted into the bearing 187, the flange sliding shaft portion 73 pushes the second end 304, causing the rotating member 300 to rotate. The rotating member 300 then assumes a second posture in which the extension direction is substantially parallel to the vertical direction. As shown in FIG. 15( b), when the rotating member 300 is in the second posture, the second end 304 does not overlap with the bearing 187 when viewed in the width direction, and the first end 303 protrudes outward from the outer circumferential surface of the non-reference side flange 124 held by the bearing 187. In the second embodiment, when the rotating member 300 is in the second posture, the first end 303 assumes the same posture and shape as the convex portion 188 in the first embodiment, and the first end 303 protrudes vertically upward from the outer circumferential surface of the non-reference side flange 124. When the cover 50 is closed, the pressing unit 802 comes into contact with the first end 303 of the rotating member 300, and the pressing roller 203 is fixed at a position separated from the roll sheet 201 and the non-reference side flange 124. In other words, the rotating member 300 is configured to be able to change its position between a first position in which the first end 303 is separated from the opening of the bearing 187, and a second position in which the first end 303 restricts the movement of the pressing unit 802.

[0081] With this configuration, the first end 303 of the rotating member 300 can be retracted to a position away from the bearing 187, i.e., the insertion / removal trajectory of the non-reference-side flange 124, and interference with the rotating member 300 can be more effectively prevented when setting the rolled sheet 201. In other words, the operability when setting the rolled sheet 201 in the roll setting unit 20 can be improved. Therefore, with the configuration of the second embodiment, the operability when setting the rolled sheet 201 in the roll setting unit 20 can be improved while preventing the pressing unit 802 from coming into contact with the non-reference-side flange 124, as in the first embodiment.

[0082] The disclosure of this embodiment includes the following configuration. (Configuration 1) A sheet feeding device that holds a roll sheet to which a flange member is attached and draws and feeds a sheet from the roll sheet, a main body having a first positioning portion and a second positioning portion provided at a different position relative to the first positioning portion in a first direction; a holding unit configured to be detachable from each of the first positioning portion and the second positioning portion of the main body, and configured to rotatably hold one end of the roll sheet in the axial direction via the flange member; a pressing unit that presses an outer peripheral surface of the roll sheet held by the holding unit when the holding unit is attached to the first positioning portion; Equipped with When the holding unit is attached to the second positioning portion, the pressing unit abuts against the holding unit and presses the roll sheet against the flange member attached to the roll sheet. A sheet feeding device characterized in that it is fixed at spaced apart positions. (Configuration 2) The sheet supply device described in configuration 1 is characterized in that the pressing unit has a pressing roller that abuts against the outer peripheral surface of the roll sheet and is held rotatably, and an arm that holds the pressing roller and is configured to be movable between a position where the pressing roller abuts against the outer peripheral surface of the roll sheet and a position where the pressing roller is separated from the outer peripheral surface of the roll sheet. (Configuration 3) The sheet supply device described in configuration 2 is characterized in that the holding unit has a bearing that holds the flange member and a protrusion that protrudes outward from the outer surface of the flange member held by the holding unit and restricts the arm from moving in the direction in which the pressure roller abuts the outer surface of the roll sheet. (Configuration 4) the pressing unit has a biasing member that biases the arm in a direction in which the pressing roller presses the outer peripheral surface of the roll sheet, The sheet feeding device according to configuration 2 or 3, characterized in that when the holding unit is attached to the second positioning portion, the holding unit abuts against a surface of the arm facing the biasing direction of the biasing member. (Configuration 5) A plurality of the pressing units are arranged side by side in the first direction, A sheet supplying device described in any one of configurations 1 to 4, characterized in that when the holding unit is attached to the second positioning portion, one of the multiple pressing units abuts against the holding unit and is fixed at a position spaced apart from the flange member attached to the roll sheet. (Configuration 6) the main body has a third positioning portion that is provided at a position different from the first positioning portion and the second positioning portion in the first direction and to which the holding unit can be attached and detached; The sheet supply device described in configuration 5, characterized in that when the holding unit is attached to the third positioning portion, one of the multiple pressing units abuts against the holding unit and is fixed at a position spaced apart from the flange member attached to the roll sheet. (Configuration 7) the holding unit includes a bearing member in which the bearing is formed, and a rotating member configured to be rotatable on the bearing member around a rotation axis along the first direction, the rotating member having a first end portion constituting the protrusion and a second end portion located on the opposite side of the rotation axis from the first end portion, The sheet supply device described in configuration 3 is characterized in that the rotating member is configured to be able to change its position between a first position in which the second end overlaps the bearing when viewed in the first direction, and a second position in which the second end does not overlap the bearing, the first end protrudes outward from the outer peripheral surface of the flange member held in the holding unit, and the arm is restricted from moving in a direction in which the pressure roller abuts the outer peripheral surface of the roll sheet. (Configuration 8) the main body has a roll setting section in which the first positioning section and the second positioning section are formed and in which a roll sheet is set, and an opening / closing member that opens and closes the roll setting section, 8. The sheet supplying device according to any one of configurations 1 to 7, wherein the pressing unit is attached to the opening / closing member. (Configuration 9) The sheet supply device described in configuration 8 is characterized in that the roll setting unit has a flange holding unit that rotatably holds the roll sheet via a flange member attached to the other end opposite to the one end in the axial direction of the roll sheet, and a drive gear that rotates the holding unit and the roll sheet held by the flange holding unit. (Configuration 10) A sheet feeding device according to any one of configurations 1 to 9, a recording unit that records an image on a sheet fed from the sheet feeding device; A recording device comprising: [Explanation of symbols]

[0083] 2a... main body, 180... holding unit, 184... positioning hole (first positioning portion), 185... positioning hole (second positioning portion), 802... pressing unit

Claims

1. A sheet feeding device that holds a roll sheet to which a flange member is attached and draws and feeds a sheet from the roll sheet, a main body having a first positioning portion and a second positioning portion provided at a different position from the first positioning portion in a first direction; a holding unit configured to be detachable from the first positioning portion and the second positioning portion of the main body, and configured to rotatably hold one end of the roll sheet in the axial direction via the flange member; a pressing unit that presses an outer peripheral surface of the roll sheet held by the holding unit when the holding unit is attached to the first positioning portion; Equipped with A sheet supply device characterized in that, when the holding unit is attached to the second positioning portion, the pressing unit abuts against the holding unit and is fixed at a position spaced apart from the flange member attached to the roll sheet.

2. The sheet supply device according to claim 1, characterized in that the pressing unit includes a pressing roller that contacts the outer peripheral surface of the roll sheet and is rotatably held, and an arm that holds the pressing roller and is configured to be movable between a position where the pressing roller contacts the outer peripheral surface of the roll sheet and a position where the pressing roller is separated from the outer peripheral surface of the roll sheet.

3. The sheet feeding device described in claim 2, characterized in that the holding unit has a bearing that holds the flange member and a protrusion that protrudes outward from the outer peripheral surface of the flange member held by the holding unit and restricts the arm from moving in a direction in which the pressure roller abuts the outer peripheral surface of the roll sheet.

4. the pressing unit has a biasing member that biases the arm in a direction in which the pressing roller presses the outer peripheral surface of the roll sheet, 3. The sheet feeding device according to claim 2, wherein, when the holding unit is attached to the second positioning portion, the holding unit abuts against a surface of the arm facing the biasing direction of the biasing member.

5. A plurality of the pressing units are arranged side by side in the first direction, The sheet feeding device according to claim 1, characterized in that, when the holding unit is attached to the second positioning portion, one of the multiple pressing units abuts against the holding unit and is fixed at a position spaced apart from the flange member attached to the roll sheet.

6. the main body has a third positioning portion that is provided at a position different from the first positioning portion and the second positioning portion in the first direction and to which the holding unit can be attached and detached; The sheet feeding device according to claim 5, characterized in that, when the holding unit is attached to the third positioning portion, one of the multiple pressing units abuts against the holding unit and is fixed at a position spaced apart from the flange member attached to the roll sheet.

7. the holding unit includes a bearing member in which the bearing is formed, and a rotating member configured to be rotatable on the bearing member around a rotation axis along the first direction, the rotating member having a first end portion constituting the protrusion and a second end portion located on the opposite side of the rotation axis from the first end portion, The rotating member has a first orientation in which the second end overlaps the bearing when viewed in the first direction. and a second position in which the second end does not overlap the bearing and the first end protrudes outward from the outer peripheral surface of the flange member held by the holding unit, thereby restricting the arm from moving in a direction in which the pressure roller abuts against the outer peripheral surface of the roll sheet.

8. the main body has a roll setting section in which the first positioning section and the second positioning section are formed and in which a roll sheet is set, and an opening / closing member that opens and closes the roll setting section, 2. The sheet feeding device according to claim 1, wherein the pressing unit is attached to the opening / closing member.

9. The sheet supply device described in claim 8, characterized in that the roll setting section has a flange holding section that rotatably holds the roll sheet via a flange member attached to the other end opposite the one end in the axial direction of the roll sheet, and a drive gear that rotates the holding unit and the roll sheet held by the flange holding section.

10. a sheet feeding device according to any one of claims 1 to 9; a recording unit that records an image on a sheet fed from the sheet feeding device; A recording device comprising:

Images