Recording device

Abstract

To improve the workability of loading rolls onto the sheet supply device. [Solution] A sheet feeding device 200 that feeds out a sheet by supporting and rotating a roll around which a sheet is wound, comprising: a first roll support portion 21 that rotatably supports the roll at one end in the width direction of the roll; a second roll support portion 22 that rotatably supports the roll at the other end of the roll, opposite to the first roll support portion 21; and a guide portion 3 that extends in the width direction and supports the second roll support portion 22 so as to be movable in the width direction, wherein a second space D2 into which a trolley for transporting the roll enters is formed below a first space D1 in which the roll is installed between the first roll support portion 21 and the second roll support portion 22.

Description

Technical Field

[0001] The present invention relates to a sheet feeding device that pulls out and supplies a sheet from a roll around which the sheet is wound, and a recording device including the sheet feeding device.

Background Art

[0002] In a sheet feeding device provided in a recording device or the like that performs a recording operation such as an image on a sheet supplied from a roll, the roll is set in the sheet feeding device prior to sheet feeding. As the sheet feeding device, a configuration including a pair of holders that rotatably hold the paper core of the roll is known. Patent Document 1 discloses a configuration in which a pair of holders are supported by a holder guide extending in the width direction of the roll, and the holders are slidable in the width direction with respect to the holder guide. By adopting a configuration in which the holders are slid in the width direction and inserted into the roll to set the roll in the sheet feeding device, a plurality of types of rolls having different widths can be set in the sheet feeding device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In this case, when transporting the rolls to the sheet supply device prior to setting the rolls, particularly heavy rolls are often difficult to carry by hand, so they are frequently transported on a trolley that can support them from below. If the rolls can be set in the holder while still on the trolley, there is no need to remove the rolls from the trolley at any point from transport to setting, thus improving the efficiency of roll mounting. However, in the configuration disclosed in Patent Document 1, when setting the rolls in the holder, the holder guide is located below the space where the rolls are set, so it is necessary to remove the rolls from the trolley and set them in the holder.

[0005] Therefore, the objective of the present invention is to improve the workability of loading rolls onto a sheet supply device. [Means for solving the problem]

[0006] To achieve the above objective, the sheet supply device according to the present invention is A recording unit that records information onto a sheet supplied from a roll around which the sheet is wound, A first roll support unit that rotatably supports the roll at one end in the width direction of the roll that supplies the sheet to the recording unit, Opposite the first roll support portion, a second roll support portion rotatably supports the roll at the other end of the roll, The second roll support portion is supported by a guide portion that allows it to move in the width direction, In front of the guide section, the roll is supported by the first roll support section and the second roll support section. The second roll support portion is characterized by having a plurality of contact portions that protrude toward and abut toward the guide portion, and the plurality of contact portions include at least a contact portion that protrudes toward the guide portion from the rear side of the guide portion. [Effects of the Invention]

[0007] According to the present invention, the workability of loading rolls onto a sheet supply device can be improved. [Brief explanation of the drawing]

[0008] [Figure 1] This is a front view of the recording device. [Figure 2] This is a schematic cross-sectional view of a recording device showing the sheet transport path. [Figure 3] This diagram shows how the roll is set into the roll holder. [Figure 4] This is a perspective view of the roll set section according to the first embodiment. [Figure 5] This is a perspective view of the trolley according to the first embodiment. [Figure 6] This figure shows the roll-setting procedure according to the first embodiment. [Figure 7] This figure shows the space formed in the recording device according to the first embodiment. [Figure 8] This is a side view of a recording device showing the movement path of a trolley according to the second embodiment. [Figure 9] This is a cross-sectional view of a non-reference roll holder according to a third embodiment. [Figure 10] This is a schematic side view of the recording device according to the fourth embodiment. [Figure 11] This is a perspective view of the area around the roll holder according to the fourth embodiment. [Figure 12] This is a perspective view showing the alignment adjustment mechanism according to the fourth embodiment. [Figure 13] This is a schematic side view of a recording device according to the fifth embodiment. [Figure 14] This is a perspective view of the area around the roll holder according to the fifth embodiment. [Figure 15] This is a perspective view of the guide adjustment unit according to the fifth embodiment. [Modes for carrying out the invention]

[0009] Referring to the drawings below, embodiments for carrying out the present invention will be illustratively and detailedly described based on examples. Note that dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment should be appropriately changed according to the configuration of the apparatus to which the invention is applied and various conditions. That is, the scope of the present invention is not intended to be limited to the following embodiments.

[0010] (First Embodiment) <Recording Device> First, the basic configuration of a recording device 100 including a sheet feeding device according to the first embodiment of the present invention will be described while referring to FIGS. 1 and 2. As the recording device, an inkjet recording device including a sheet feeding device for feeding a sheet as a print medium and a recording unit for performing a recording operation such as printing an image on the sheet will be described as an application example. In addition, in this specification, "ink" is used as a general term for liquids such as a recording liquid. Further, when a plurality of identical or corresponding members are provided in the same drawing of various devices and the like described below, subscripts such as a and b may be given in the drawing for indication, but when there is no need to distinguish them in the description text, the subscripts such as a and b may be omitted in the description.

[0011] FIG. 1 is a front view of the recording apparatus 100. The recording apparatus 100 includes a roll set unit 200 that can feed out a roll in which a sheet is wound in a roll shape while supporting the roll. The recording apparatus 100 is provided with a roll set unit 200a on the paper feed side and a roll set unit 200b on the take-up side. It is possible to print an image on the sheet fed from the roll supported by the roll set unit 200a and take up the sheet printed by the roll set unit 200b. The user can input various commands for the recording apparatus 100, such as specifying the size of the roll and setting the type of the roll, by using various switches provided on the operation panel 13. In the following description, as shown in FIG. 1, the width direction of the roll supported by the recording apparatus 100 is defined as the X-axis direction, the depth direction of the apparatus is defined as the Y-axis direction, and the gravitational direction is defined as the Z-axis direction. In the present embodiment, the X-axis direction, the Y-axis direction, and the Z-axis direction are orthogonal to each other.

[0012] FIG. 2 is a schematic cross-sectional view of the recording apparatus 100 showing the conveyance path of the sheet S. The roll set The sheet S drawn out from the roll R set (mounted) in the roll set unit 200a is wound up by being connected to the roll set unit 200b. The roll set unit 200 includes a roll holder 2 and a holder guide 3. The roll set unit 200, the roll holder 2, and the holder guide 3 provided on the paper feed side and the take-up side are distinguished and described as necessary by adding "a" to the end of the reference numeral for the member on the paper feed side and adding "b" to the end of the reference numeral for the member on the take-up side.

[0013] The sheet S drawn out from the roll R set in the roll set unit 200a is conveyed by the upstream sheet conveyance unit 300 to the print unit 400 as a recording unit capable of printing an image. In the print unit 400, an image is printed on the sheet S by ejecting ink from an inkjet print head 8.

[0014] The print head 8 ejects ink from the ejection port using an ejection energy generating element such as an electrothermal conversion element (heater) or a piezoelectric element. When an electrothermal conversion element is used, the heat generated causes the ink to foam, and the foaming energy is used to eject the ink from the ejection port. In the application of the present invention, the print head 8 is not limited to an inkjet method. Furthermore, the printing method of the printing unit 400 is not limited and may be, for example, a serial scan method or a full line method. In the case of a serial scan method, an image is printed with the transport operation of the sheet S and the scanning of the print head 8 in a direction intersecting the transport direction of the sheet S. In the case of a full line method, a long print head 8 extending in a direction intersecting the transport direction of the sheet S is used, and an image is printed while the sheet S is transported continuously.

[0015] A axial-shaped paper tube fixing part 11, provided on the roll holder 2, is inserted into the hollow hole of the roll R. The paper tube fixing part 11 is driven in both forward and reverse directions by power transmitted from a roll drive motor (not shown) provided on the roll holder 2. The paper tube fixing part 11 holds the center of the roll, and it rotates in the directions of arrows C1 and C2. By enabling bidirectional drive in both forward and reverse directions, it is possible to selectively print on the front or back surface of the sheet S, as shown by the solid and dotted lines in the path from the paper-feeding side roll set section 200a to the upstream sheet transport section 300 in Figure 2. Similarly, it is possible to selectively wind the printed side of the sheet S outwards or inwards, as shown by the solid and dotted lines in the path from the downstream sheet transport section 500 to the winding side roll set section 200b in Figure 2, which will be described later.

[0016] The upstream transport guide 4 of the upstream sheet transport section 300 guides the front and back surfaces of the sheet S as it is pulled out from the roll set section 200a, and leads the sheet S to the print section 400. The transport roller 5 is rotated in both forward and reverse directions by a motor for driving the transport roller. The nip roller 6 is capable of driven rotation in accordance with the rotation of the transport roller 5. The transport speed of the sheet S by the transport roller 5 is set higher than the pull-out speed of the sheet S by the rotation of the roll R, thereby applying back tension to the sheet S, allowing the sheet S to be transported while under tension. As a result, sagging of the sheet S is prevented, and the occurrence of creases in the sheet S and transport errors can be suppressed.

[0017] The platen 7 of the printing unit 400 is attracted to the back side of the sheet S opposite to the recording surface by the negative pressure generated by the suction fan 9 through the suction holes 7a provided in the platen 7. This restricts the position of the sheet S to follow the platen 7, enabling high-precision printing of images by the print head 8.

[0018] The downstream transport guide 10 of the downstream sheet transport section 500 guides the front and back surfaces of the sheet S drawn out from the print section 400, and leads the sheet S to the roll set section 200b on the winding side. Here, the leading edge of the sheet S is fixed to the paper tube set in the roll set section 200b. By adjusting the conveying speed of the conveying roller 5 and rotating the set paper tube accordingly, the sheet S printed in the printing unit 400 can be continuously wound up.

[0019] The recording device 100 is equipped with stands 14 at both ends in the width direction. The stands 14 support the weight of the upstream sheet transport section 300, the printing section 400, and the downstream sheet transport section 500 at the top of the main body from below, and also support the weight of the roll R via the roll set section 200. The stands 14 are connected to the holder guide 3 of the roll set section 200 and also function as guide support sections that support the holder guide 3. The stands 14 are in contact with the floor surface, allowing the weight of the recording device 100 to be transferred to the floor.

[0020] <Roll Set Section> Next, the details of the roll setting section 200 according to this embodiment will be described with reference to Figures 3 and 4. Figures 3(a), (b), and (c) are explanatory diagrams showing how the roll R is set in the roll setting section 200. Figure 3(a) shows how the paper tube fixing section 11 of the reference roll holder 21 is inserted into one end of the roll R in the width direction. Figure 3(b) shows how the paper tube fixing section 11 of the non-reference roll holder 22 is inserted into the other end of the roll R, which has one end supported. Figure 3(c) shows how the non-reference roll holder 22 is fixed by the locking mechanism 12 and the support of the roll R is completed.

[0021] The roll holder 2 provided in the roll set section 200 consists of a pair of reference roll holders 21 and non-reference roll holders 22. The roll R is supported by the roll holders 2 by the reference roll holder 21 supporting one end of the roll R in the width direction and the non-reference roll holder 22 supporting the other end of the roll R in the width direction. A paper tube fixing part 11 is rotatably attached to each of the reference roll holder 21 and the non-reference roll holder 22. The non-reference roll holder 22 is held in place by a holder guide 3, which acts as a guide part, so as to be slidable in the width direction (X direction) of the roll R. The non-reference roll holder 22 is also equipped with a locking mechanism 12, and by turning the knob on the locking mechanism 12 in the T direction, the non-reference roll holder 22 can be fixed in place at any position in the width direction relative to the holder guide 3. The reference roll holder 21 is also held in place by the holder guide 3, but a sliding mechanism is not required for it. The paper tube fixing section 11 is equipped with a friction member, and when the roll R is set, the roll R and the paper tube fixing section 11 rotate together. The reference roll holder 21 is provided with a roll drive motor (not shown) connected to the paper tube fixing section 11. The roll drive motor transmits rotational force to the paper tube fixing section 11, causing the reference-side paper tube fixing section 11 to rotate in both forward and reverse directions. The non-reference-side paper tube fixing section 11 is not connected to a drive motor, and when the roll R is set, the drive is transmitted through the paper tube of the roll R, causing it to rotate in a driven manner.

[0022] When setting the roll R in the roll setting section 200, first, as shown in Figure 3(a), the paper tube fixing section 11 of the reference roll holder 21 is inserted into one of the paper tubes of the roll R. When one of the paper tubes of the roll R and the paper tube fixing section 11 come into contact, the friction member of the paper tube fixing section 11 is fitted into the paper tube of the roll R. This fixes the roll R to the paper tube fixing section 11 of the reference roll holder 21. Next, as shown in Figure 3(b), the non-reference roll holder 22 is slid in the width direction, and the paper tube fixing section 11 of the non-reference roll holder 22 is inserted into the other paper tube of the roll R. This fixes the roll R to the paper tube fixing section 11 of the non-reference roll holder 22 in the same way as the reference side. Finally, as shown in Figure 3(c), the non-reference roll holder 22 is fixed to the holder guide 3 using the locking mechanism 12. This prevents the non-reference roll holder 22 from sliding in the paper width direction and causing the roll R to come off.

[0023] By using a sliding mechanism consisting of the roll holder 2 and the holder guide 3, the roll R is held firmly in place by the roll set section 200 regardless of the roll width. In other words, the roll set section 200 supports rolls of any width that is less than or equal to the widthwise length of the holder guide 3. The configuration allows for setting R. Furthermore, if the reference roll holder 21 is fixed to the holder guide 3 and not slid, the end of the roll R is fitted into the fixed reference roll holder 21, so the position of the reference end of the roll R is fixed to the roll setting section 200.

[0024] The above describes how to set the roll R into the roll setting section 200 as shown in Figure 3. By performing this setting procedure in reverse order, it is possible to remove the roll R from the roll setting section 200.

[0025] Figure 4 is a perspective view of the roll set section 200 according to the first embodiment. The stand 14 has a holder guide 3a on the paper feed side and a holder guide 3b on the winding side fixed to it. The paper feed side roll holder 2a is configured such that the reference roll holder 21a (first roll support section) and the non-reference roll holder 22a (second roll support section) are positioned on the front side of the recording device (positive Y direction side) relative to the holder guide 3a. That is, the holder guide 3a is positioned on the rear side of the main body (negative Y direction side) relative to the paper tube fixing section 11 on the paper feed side. With this configuration, there are no structures such as the holder guide 3 on the front side of the main body or below the main body relative to the paper tube fixing section 11 for the paper feed side roll holder 2a, so it does not get in the way when installing the roll R. Therefore, in the recording device 100, it is possible to place the roll R on a trolley and move it in the entry direction P shown in Figure 4, and set the roll R while it is still on the trolley. In this embodiment, the entry direction P is parallel to the depth direction (Y direction), with the upstream side of the entry direction P being the front side of the device and the downstream side being the back side of the device.

[0026] Furthermore, the roll holder 2b on the winding side is configured such that the reference roll holder 21b (third roll support section) and the non-reference roll holder 22b (fourth roll support section) are positioned towards the rear of the main body relative to the holder guide 3b. In other words, the recording device 100 is provided with four roll support sections. With respect to the roll holder 2b on the winding side, since there are no structures such as the holder guide 3 behind the main body or below the main body relative to the paper tube fixing section 11, the operation of removing the roll R is improved.

[0027] <Cart> Figure 5 is a perspective view of the trolley 50 according to the first embodiment. The trolley 50 includes a support section 51 that can support the roll R from below when the width direction of the roll R is horizontal, a wheel section 52 for movement, and a height adjustment section 53 that can adjust the height position of the support section 51. The width (X direction) length of the support section 51 is smaller than the roll width of the roll R to be set, so that the roll holder 2 does not interfere with the support section 51 when setting the roll. In addition, the support section 51 is provided with a slope to prevent the roll R from rolling and falling. There are no particular restrictions on the detailed form of the trolley 50, but it is desirable that the height of the support section 51 can be adjusted by the height adjustment section 53, etc., in order to accommodate various roll diameters.

[0028] Figures 6(a), (b), (c), and (d) are front views showing the procedure for setting the roll R in the roll setting section 200 using the trolley 50. Figure 6(a) shows the vertical positioning of the roll R after moving the trolley 50 between opposing paper tube fixing sections 11. Figure 6(b) shows the movement of the trolley 50 with the roll R on it toward the reference roll holder 21. Figure 6(c) shows the movement of the non-reference roll holder 22 toward the roll R with one end of the roll R in the width direction in contact with the paper tube fixing section 11. Figure 6(d) shows the state after the non-reference roll holder 22 has been fixed by the locking mechanism 12 and the support of the roll R is complete.

[0029] When setting the roll R, which is placed on the receiving section 51 of the trolley 50, into the roll setting section 200, first move the trolley 50 so that the roll R is positioned in the area between the two roll holders 2. After the position of the roll R in the depth direction (Y direction) is determined, as shown in Figure 6(a), The height of the center of roll R is aligned with the height of the paper tube fixing part 11 of the recording device 100 to perform vertical positioning. The trolley 50 is provided with a height adjustment part 53, which is used to adjust the height (Z-direction position) of roll R. Next, as shown in Figure 6(b), the trolley 50 is moved in the width direction to insert one end of the paper tube of roll R into the paper tube fixing part 11 of the reference roll holder 21. With these operations, the center of roll R is aligned with the center of the paper tube fixing part 11 in both the depth and vertical directions, so the paper tube can be easily inserted into the paper tube fixing part 11. When one end of the paper tube of roll R comes into contact with the paper tube fixing part 11, the friction member of the paper tube fixing part 11 is fitted onto the paper tube of roll R. This fixes roll R to the paper tube fixing part 11 of the reference roll holder 21. Furthermore, as shown in Figure 6(c), the non-standard roll holder 22 is slid in the width direction to bring it closer to the roll R, and the other end of the paper tube of the roll R is inserted into the paper tube fixing part 11 of the non-standard roll holder 22. In this way, the roll R is fixed to the paper tube fixing part 11 of the non-standard roll holder 22, just like the standard roll holder 21, and the width direction (X direction) position of the roll R is determined. Finally, as shown in Figure 6(d), the non-standard roll holder 22 is fixed to the holder guide 3 using the locking mechanism 12. This prevents the non-standard roll holder 22 from sliding in the width direction and causing the roll R to come off the roll holder 2. Next, the receiving part 51 is lowered by the height adjustment part 53, and the trolley 50 is moved away from the roll R, completing the setting of the roll R to the recording device 100.

[0030] As explained above in Figure 6, the procedure for setting the roll R onto the roll set section 200 using the trolley 50 is described. However, by performing this setting procedure in reverse order, it is possible to remove the roll R from the roll set section 200 without manually supporting it. By configuring the system so that the trolley 50 can be used to remove the roll R, the removal of the roll R from the recording device 100 and the transportation of the roll R can be performed without removing the roll R from the trolley 50. Furthermore, by using the trolley 50 to remove the single-sided printed roll from the winding-side roll set section 200b and setting it onto the paper-feed-side roll set section 200a while the roll R is still on the trolley 50, it is possible to perform double-sided printing without removing the roll R from the trolley 50.

[0031] Figure 7 shows the space in the recording device 100 where the roll R is set and the space for the trolley 50 to enter. A first space D1 is formed in the space between the reference roll holder 21 and the non-reference roll holder 22 of the roll holder 2 where they face each other, where the roll R is installed. Below the first space D1, there are no obstacles when positioning the trolley 50, and a second space D2 is formed for the trolley 50 to enter when the roll is set. The trolley 50 carrying the roll R moves from the front of the device to the back of the device and enters the second space D2. Note that the spaces described above do not mean that there are no objects at all; it is sufficient for the space to be free of obstacles to the extent that its respective purpose can be achieved.

[0032] Thus, according to this embodiment, the roll R can be set while it remains on the trolley 50, so the entire process from transporting the roll R to setting it in the roll setting unit 200 can be performed without removing the roll R from the trolley 50. Furthermore, when setting the roll, the weight of the roll R is always supported by the trolley 50, so the roll R can be set without having to manually support its weight. In other words, the workability of attaching the roll to the roll holder 2 in the roll setting unit 200 is improved.

[0033] (Second embodiment) Next, a second embodiment will be described with reference to Figure 8. In the second embodiment, the positional relationship between the paper-feed side roll set section 200a and the winding side roll set section 200b differs from that of the first embodiment. In the following description, we will focus on the differences from the first embodiment, and other identical components will be denoted by the same reference numerals and their descriptions will be omitted.

[0034] Figure 8 is a side view of the recording device 600 according to the second embodiment. In Figure 8, the trolley 50 is This section demonstrates the operation of removing and resetting the roll R. Such an operation is performed when replacing a roll R that has been printed on one side from the roll set section 200b to the roll set section 200a during double-sided printing. In the second embodiment, the paper tube fixing section 11 provided in both the roll set section 200a and the roll set section 200b are configured to be at the same height. In other words, the height of the rotation center of the roll supported by the roll set section 200a and the height of the rotation center of the roll supported by the roll set section 200b are the same.

[0035] When printing on both sides, after printing on one side of the sheet, it is necessary to set the wound-up roll back into the roll set section on the paper feed side. In this embodiment, the roll R can be removed from the roll set section 200b on the winding side, placed on the trolley 50, and with the roll R still on it, the trolley 50 can be moved to the roll set section 200a on the paper feed side, where the roll R can be set. In other words, after single-sided printing, the operation from removal to installation of the roll R can be performed without manually lifting the roll R or adjusting the height of the trolley 50. If the height of the paper core fixing section 11 of the roll set section 200a and the roll set section 200b are different, the height of the trolley 50 must be adjusted or the roll R must be temporarily lifted when resetting the roll R into the roll set section 200a. Therefore, as in this embodiment, by making the height of the paper tube fixing portion 11 of the roll set portion 200a and the roll set portion 200b the same, the series of operations of removing, transporting, and resetting the roll R can be performed without adjusting the height of the roll R, thus improving work efficiency.

[0036] (Third embodiment) Next, a third embodiment will be described with reference to Figures 9(a) and 9(b). In the third embodiment, the sliding configuration of the non-reference roll holder 22 differs from that of the first embodiment. In the following description, we will focus on the differences from the first embodiment, and other identical components will be denoted by the same reference numerals and their descriptions will be omitted.

[0037] Figure 9(a) is a cross-sectional view showing the sliding mechanism of the non-standard roll holder 22. The non-standard roll holder 22, which is provided with the paper tube fixing portion 11, is slidable in the width direction (X direction) along the holder guide 3. In this embodiment, the non-standard roll holder 22 has a plurality of holder rollers 31 as roller portions that contact the holder guide 3. The non-standard roll holder 22 is supported by the holder guide 3 via the holder rollers 31. The holder rollers 31 are fixed so as to be rotatable about a rotation axis that extends in a direction perpendicular to the width direction relative to the non-standard roll holder 22. As the holder rollers 31 connected to the non-standard roll holder 22 rotate while contacting the holder guide 3, the sliding resistance of the non-standard roll holder 22 when it slides is reduced.

[0038] The non-standard roll holder 22 is equipped with holder rollers 31a (first roller), holder roller 31b (second roller), and holder roller 31c (third roller). Holder roller 31a contacts the holder guide 3 from the upper vertical side downward (positive Z direction). Holder roller 31b contacts the upper end of the holder guide 3 from the back in the depth direction toward the front (positive Y direction). Holder roller 31c is below holder roller 31b and contacts the lower end of the holder guide 3 from the front in the depth direction toward the back (negative Y direction). Furthermore, multiple rows of holder rollers 31a, 31b, and 31c are provided in the width direction. By arranging the holder rollers 31 in this way, the non-standard roll holder 22 is supported so as not to tilt due to the moment generated by the weight of the non-standard roll holder 22 which is located in front of the main body of the holder guide 3. Furthermore, by arranging one or more rows of holder rollers 31 on both the outside and inside of the contact portion between the paper tube fixing portion 11 and the paper tube in the width direction, the non-standard roll holder 22 can slide in the width direction without getting caught on the holder guide 3.

[0039] Figure 9(b) is a cross-sectional view showing the sliding mechanism of a non-reference roll holder 22 in a third embodiment, different from the embodiment shown in Figure 9(a). In the embodiment shown in Figure 9(a), the cross-sectional shape of the holder guide 3 was rectangular, but in the embodiment shown in Figure 9(b), two holder guides 32 with circular cross-sectional shapes are provided side by side in the vertical direction. Even in this configuration, by making the contact direction and contact position of the holder roller 31 with respect to the holder guide 32 the same as in the configuration described above, the non-reference roll holder 22 can be supported so that it can slide in an appropriate posture, and the sliding resistance during sliding can be reduced.

[0040] The shape of the roll holder and holder guide, as well as the number and arrangement of the holder rollers, are not limited to the configuration described above and can be modified in various ways. For example, the number of holder rollers may be increased to further stabilize the support of the roll holder.

[0041] (Fourth embodiment) Next, a fourth embodiment will be described with reference to Figures 10, 11, and 12. The fourth embodiment differs from the first embodiment in that it is provided with a position adjustment mechanism for adjusting the position of the roll holder 2 for alignment adjustment. In the following description, we will focus on the differences from the first embodiment, and other identical components will be denoted by the same reference numerals and their descriptions will be omitted.

[0042] Figure 10 is a side view of the recording device 700 according to the fourth embodiment. Figure 11 is a perspective view of the roll set section 750 according to the fourth embodiment. To prevent the sheet S from tilting, alignment adjustment of the transport roller 5 and the paper tube fixing section 11 is necessary. However, in the configurations of the embodiments described so far, the transport roller 5 and the paper tube fixing section 11 are fixed via multiple parts, making alignment adjustment difficult if the transported sheet S is tilted. Therefore, in this embodiment, the position of the guide adjustment section 15, which is a connecting member connecting the stand 14 and the holder guide 3, relative to the stand 14 is made adjustable. By adjusting the position of the guide adjustment section 15, it is possible to adjust the fixing position of the holder guide 3 relative to the stand 14 in the depth direction (Y direction) and the vertical direction (Z direction). Accordingly, by adjusting the position of the guide adjustment section 15 relative to the holder guide 3, it is possible to adjust the alignment of the transport roller 5 and the paper tube fixing section 11 and prevent the sheet S from tilting. The recording device 700 is provided with a guide adjustment unit 15a connected to the paper feed side holder guide 3a, and a guide adjustment unit 15b connected to the take-up side holder guide 3b.

[0043] Figure 12(a) is a perspective view showing the guide adjustment unit 15a and the stand 14 separately, and Figure 12(b) is a perspective view showing the guide adjustment unit 15a fixed to the stand 14. The position adjustment mechanism of this embodiment includes a guide adjustment unit 15 provided with a mounting hole 151 and a stand 14 provided with a screw hole 141. The guide adjustment unit 15 is fixed to the stand 14 by inserting a bolt 61 through the mounting hole 151 and the screw hole 141 and tightening it to the bolt 61 via a washer 62. The mounting hole 151 is formed larger than the threaded portion of the bolt 61, allowing for fine adjustment of the position of the guide adjustment unit 15 relative to the stand 14 in the depth direction and vertical direction, thereby fixing the guide adjustment unit 15 to the stand 14. That is, if the conveyed sheet S is skewed, the position of the guide adjustment unit 15 can be adjusted to adjust the alignment of the conveying roller 5 and the paper tube fixing unit 11. Furthermore, if the diameter of the bolt head 61 is sufficiently large compared to the mounting hole 151 and the guide adjustment part 15 can be securely fixed, the washer 62 does not need to be provided.

[0044] In this embodiment, the guide adjustment section 15 is provided only at the end of the holder guide 3 on the non-reference roll holder 22 side, but it may also be provided at the end on the reference roll holder 21 side. In other words, as an alignment adjustment mechanism, a position adjustment mechanism such as a guide adjustment section must be provided at least at one end of the holder guide, but it may also be provided at either the reference side or the non-reference side, or at both ends of the reference side and the non-reference side.

[0045] (Fifth embodiment) Next, a fifth embodiment will be described with reference to Figures 13, 14, and 15. In the fifth embodiment, a position adjustment mechanism with a different configuration from that of the fourth embodiment is provided, allowing for alignment adjustment. In the following description, we will focus on the differences from the first embodiment, and other identical components will be denoted by the same reference numerals and their descriptions will be omitted.

[0046] Figure 13 is a side view of the recording device 800 according to the fifth embodiment. Figure 14 is a perspective view of the roll set section 850 according to the fifth embodiment. In a configuration in which the non-reference roll holder 22 is movable in the width direction, it is preferable that the alignment of the transport roller 5 and the paper tube fixing section 11 can be adjusted regardless of the width direction position of the non-reference roll holder 22. Therefore, the roll set section 850 of this embodiment is configured to have a plurality of holder sliders 16 that extend over substantially the entire width direction of the holder guide 3 as a position adjustment mechanism for the roll holder 2. In other words, the recording device 800 is configured so that the alignment of the transport roller 5 and the paper tube fixing section 11 can be adjusted over substantially the entire width direction of the holder guide 3 by means of the holder sliders 16.

[0047] The holder sliders 16 are provided in three locations on each of the holder guides 3 on the paper feed side and the winding side, and are sliding members that allow the non-reference roll holder 22a on the paper feed side and the non-reference roll holder 22b on the winding side to slide in the width direction. The holder guide 3a on the paper feed side supports the roll holder 2a via the holder sliders 16a (first slider), 16b (second slider), and 16c (third slider). The holder guide 3b on the winding side supports the roll holder 2b via the holder sliders 16d, 16e, and 16f.

[0048] The holder slider 16a is provided at the upper end of the holder guide 3a and contacts the roll holder 2a in a vertically upward direction (negative Z direction). The holder slider 16b is provided above the holder guide 3a and on the rear side in the depth direction and contacts the roll holder 2a in a depth direction (negative Y direction). The holder slider 16c is provided below the holder guide 3a and on the front side in the depth direction and contacts the roll holder 2a in a depth direction (positive Y direction). By arranging the holder sliders 16 in this way, the roll holder 2 can be supported so as not to tilt. In addition, the position of the roll holder 2 in the depth direction (Y direction) can be adjusted by the holder sliders 16b and 16c. Furthermore, the position of the roll holder 2 in the vertical direction (Z direction) can be adjusted by the holder slider 16a. In this way, by adjusting the position and orientation of the roll holder 2 to which the paper tube fixing part 11 is provided by the holder sliders 16, the alignment of the transport roller 5 and the paper tube fixing part 11 can be adjusted.

[0049] Next, the details of the position adjustment method using the holder slider 16 will be explained, using the holder slider 16a as an example. Figure 15 is a perspective view showing the method of adjusting the vertical position of the roll holder 2 using the holder slider 16a. In Figure 15, the holder slider 16a before adjustment is shown with a solid line, and the holder slider 16a after adjustment is shown with a dotted line. The adjusted holder slider 16a shown in Figure 13 is adjusted in a direction that adjusts the vertical position of the roll holder 2 downwards.

[0050] The holder slider 16a is formed by bending a long, narrow plate in the short direction and has multiple surfaces extending in the width direction. The holder slider 16a has a first surface 161 that abuts against the roll holder 2, a second surface 162 that is parallel to the first surface 161 and abuts against the holder guide 3, and a third surface 163 that is perpendicular to the second surface 162 and abuts against the holder guide 3. The second surface 162 abuts against the holder guide 3 in the vertical downward direction (positive Z direction), and the third surface 163 abuts against the holder guide 3 in the depth direction inward (negative Y direction). The slider 16a further includes an elongated adjustment hole 164 that is long in the width direction and penetrates the second surface 162, a mounting elongated hole 165 that is long in the vertical direction and penetrates the second surface 162, and a mounting elongated hole 166 that is long in the depth direction and penetrates the third surface 163. The holder slider 16a is fixed to the holder guide 3 by inserting a screw part such as a bolt through the screw hole (not shown) of the holder guide 3 via the mounting elongated holes 165 and 166.

[0051] For position adjustment using the holder slider 16a, an adjustment jig 19 is used that engages with both the reference hole 18 and the adjustment slot 164 provided in the holder guide 3. The reference hole 18 is located inside the adjustment slot 164 when viewed from the axial direction of the reference hole 18. The adjustment jig 19 has a cylindrical shaft portion 191 and a pin portion 192 provided at the tip of the shaft portion 191. The central axis of the pin portion 192 is offset from the central axis of the shaft portion 191, and the pin portion 192 is eccentric with respect to the shaft portion 191. By inserting the pin portion 192 into the reference hole 18 and the shaft portion 191 into the adjustment slot 164, the adjustment slot 164 is pushed vertically by the shaft portion 191 by rotating the adjustment jig 19 around the central axis of the pin portion 192. In other words, by adjusting the adjustment jig 19 while the fixing by the screw parts inserted through the mounting slots 165 and 166 is loosened, the vertical position of the first surface 161 of the holder slider 16 is adjusted.

[0052] When the position of the first surface 161 that contacts the roll holder 2 is adjusted, the positions of the second surface 162 and the third surface 163 also change relative to the holder guide 3. For example, when the position of the first surface 161 is adjusted downward, the second surface 162 also moves downward, and the third surface moves towards the front in the depth direction. Even in such cases, the mounting slot 165 provided on the second surface 162 and the mounting slot 166 provided on the third surface 163 are formed in an elongated shape so that the holder slider 16 can be fixed to the holder guide 3.

[0053] By providing multiple reference holes 18 in the width direction of the holder guide 3, and multiple adjustment slots 164, mounting slots 165, and mounting slots 166 in the width direction of the holder slider 16b, high-precision alignment adjustment can be performed across the entire width direction.

[0054] The above explanation described how to adjust the position of the roll holder 2 using the holder slider 16b as an example, but the configuration and position adjustment methods for the other holder sliders 16 are similar. By providing multiple holder sliders 16 with different contact directions with respect to the roll holder 2 on the holder guide 3, the position and orientation of the roll holder 2 can be adjusted, thereby adjusting the alignment of the transport roller 5 and the paper tube fixing section 11.

[0055] It should be noted that the application of the present invention is not limited to the embodiments described above. For example, the configurations of each embodiment may be freely combined, such as providing the holder roller shown in the third embodiment and the holder slider 16 shown in the fifth embodiment to reduce sliding resistance during sliding and to allow alignment adjustment. [Explanation of Symbols]

[0056] 3...Holder guide (guide section), 21...Reference roll holder (first roll support section), 22...Non-reference roll holder (second roll support section), 50...Cart, 200...Roll set section (sheet supply device), D1...First space, D2...Second space, R...Roll, S...Sheet

Claims

1. A recording unit that records information onto a sheet supplied from a roll around which the sheet is wound, A first roll support unit that rotatably supports the roll at one end in the width direction of the roll that supplies the sheet to the recording unit, Opposite the first roll support portion is a second roll support portion that rotatably supports the roll at the other end of the roll, The second roll support portion is supported by a guide portion that allows it to move in the width direction, In front of the guide section, the roll is supported by the first roll support section and the second roll support section. The recording device is characterized in that the second roll support portion has a plurality of contact portions that protrude toward and abut toward the guide portion, and the plurality of contact portions include at least a contact portion that protrudes toward the guide portion from the rear side of the guide portion.

2. The recording device according to claim 1, characterized in that the plurality of contact portions comprises a first contact portion that can contact the guide portion from above, a second contact portion that can contact the guide portion from the front, and a third contact portion that can contact the guide portion from the rear.

3. The recording device according to claim 1 or 2, characterized in that the guide portion has a vertical width greater than the horizontal width in a cross-section viewed from the width direction.

4. The recording device according to claim 1 or 2, characterized in that the guide portion has a circular cross-section when viewed from the width direction.

5. The recording device according to any one of claims 1 to 4, characterized in that it comprises a locking mechanism for fixing the second roll support portion to the guide portion.

6. A first support portion that supports the recording portion on the first roll support portion side, The device comprises a second support portion that supports the recording portion on the side of the second roll support portion, The recording device according to any one of claims 1 to 5, characterized in that the guide portion is connected to the first support portion and the second support portion, respectively.

7. A third roll support portion that rotatably supports the roll at one end of the roll, Opposite the third roll support portion is a fourth roll support portion that rotatably supports the roll at the other end of the roll, Equipped with, The recording device according to claim 6, characterized in that the sheet recorded in the recording unit is wound onto a roll supported between the third roll support and the fourth roll support.

8. The recording device according to claim 7, characterized in that the height of the rotation center of the roll supported by the first roll support and the second roll support coincides with the height of the rotation center of the roll supported by the third roll support and the fourth roll support.

9. Equipped with a motor, The recording device according to any one of claims 1 to 8, characterized in that the motor rotates the roll supported by the first roll support and the second roll support.

10. The recording device according to claim 9, characterized in that the motor transmits power to a fixed part inserted into the roll in the second roll support part.

11. A guide support portion that supports the aforementioned guide portion, A position adjustment mechanism that can adjust the position of the first roll support or the second roll support relative to the guide support, A recording device according to any one of claims 1 to 10, characterized by comprising the above.

12. The recording device according to any one of claims 1 to 11, characterized in that a roll transported by a trolley is installed between the first roll support and the second roll support.

13. The recording device according to any one of claims 1 to 12, characterized in that the recording unit is an inkjet type print head that ejects ink onto a sheet.

Images