JP2010215396A - Roll sheet supporting device and recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problems: if a spool holding a roll sheet is heavy, the positioning operation in the sheet width direction in a printer mounting operation is difficult; the impact at the time of setting in a roll seat support part is high; and when the spool is obliquely removed from the roll seat support part, a groove for spool positioning and a plate for spool positioning are interfered with each other, and the spool is therefore not removed smoothly. <P>SOLUTION: The rough positioning of the spool axial direction is performed in a temporary pedestal. During movement from the position to the roll seat support part, the positioning of the axial direction is completed by guidance of the contact surface between the spool and a rail. Then, the vigor of the spool in the fall direction thereof is buffered by a damper. The precise positioning in the sheet width direction is unnecessary, and even if the roll sheet is heavy, operability and silence are improved. Further, even if the spool is obliquely removed, a part of the positioning contact surface in closing positional relationship is cut. Therefore, the removing operation can be smoothly performed without interfering. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a roll sheet support device for mounting a roll sheet and a recording apparatus including the roll sheet support device.

  2. Description of the Related Art Conventionally, a roll sheet or roll paper mounted on a recording device such as a printer is mounted on a roll paper support device in a roll paper supply device by holding a roll paper and rotating integrally. In addition, when the roll paper is mounted in the roll paper supply device, a positioning member is configured in each of the spool and the roll paper support device so that the roll paper can be positioned in the paper width direction, and the spool positioning member is attached to the roll paper support unit. Wear while aligning with the positioning member. However, since it is difficult to load a heavy roll paper while aligning it with the roll paper support, the roll paper is temporarily placed in a place other than the roll paper support. Further, after the roll paper is positioned in the temporarily placed state, the roll paper is mounted on the roll paper support unit.

  For example, a roll paper supply device disclosed in Patent Document 1 includes a horizontal temporary placement table for temporarily placing roll paper, a roll paper support unit positioned below the temporary placement table, a temporary placement table, and a roll paper support unit. It has a slope that connects smoothly. The positioning of the spool and the roll paper support is performed by engaging the groove of the spool with the positioning plate of the roll paper support.

Japanese Patent Application No. 11-079492

  However, the roll paper supply apparatus disclosed in Patent Document 1 has the following problems. First, after the roll paper is placed on the temporary table, the heavy roll paper must be moved and positioned in the paper width direction, so that the operability is poor. In Patent Document 1, positioning is performed by engaging a positioning plate provided on the side of the apparatus main body with an annular groove formed at the end of the spool. For this reason, for example, as shown in FIG. 10, if the spool is to be taken out obliquely from one side, the positioning plate and the groove of the spool interfere with each other, and the spool cannot be taken out smoothly, and excessive stress may be applied to the positioning portion. Third, when the roll paper is set from the temporary placement table to the roll paper support portion, if the momentum of dropping is applied by its own weight, a large impact is applied to the roll paper support portion.

  In view of such a problem, the roll sheet supply device of the present invention includes a shaft that supports the roll sheet, a first contact surface that is provided at one end of the shaft and restricts the position of the shaft in the axial direction. Two contact surfaces, a first reference surface that restricts the position of the first contact surface to restrict movement of the shaft in the first direction when the shaft is set at the set position of the apparatus main body, and the shaft is the device. When the main body is set at the set position, the second reference surface that restricts the position of the second contact surface and restricts the movement of the shaft in the second direction opposite to the first direction, and the shaft temporarily. The guide means guides from the set position to the set position. The guide means guides the first contact surface to the first reference surface, and the second guide surface guides the second contact surface to the second reference surface. There are two guides, and the first guide and the second guide are axially larger than the set position at the end on the temporary placement position side. The region where the first abutment surface is regulated by the first reference surface and the region where the second abutment surface is regulated by the second reference surface are defined by the axis of the axis. It is a roll sheet | seat support apparatus characterized by not being on the same side regarding the virtual plane to include.

  The roll sheet supply device of the present invention includes a shaft that supports the roll sheet, and a first contact surface and a second contact surface that are provided at one end of the shaft and restrict the position of the shaft in the axial direction. And a first reference surface that restricts the movement of the shaft in the first direction by restricting the position of the first contact surface when the shaft is set at the set position of the device main body, and the shaft is the set position of the device main body. The second reference surface that restricts the position of the second abutting surface and restricts the movement of the shaft in the second direction opposite to the first direction, and the shaft is set from the temporarily placed position. A damper having guide means for guiding to the position, and suppressing the movement of the shaft guided by the guide means in the middle of reaching the set position; and the guide means is a first for guiding the first contact surface to the first reference surface. A first guide and a second guide having a guide and a second guide for guiding the second contact surface to the second reference surface; Before the damper acts on the shaft guided by the guide means, the first guide and the second guide are A roll characterized in that the position of the shaft is regulated to be substantially the same as the set position, and the position is regulated so that the movable range in the axial direction is larger than the set position while a damper is acting on the shaft. It is a sheet support device.

  According to the present invention, the roll sheet can be positioned only by placing the roll sheet on the temporary placement table and moving from the temporary placement table to the roll sheet support part, and the mounting property of the roll sheet is greatly improved. Further, even if the roll sheet set on the roll sheet support portion is taken out obliquely, there is no problem of interference at the positioning portion, so that it can be taken out smoothly. Further, by providing a buffering means that acts on the roll sheet after positioning of the roll sheet is completed, it is possible to reduce the impact applied to the roll sheet support when the roll sheet moves to the roll sheet support. In addition, it is possible to prevent the spool shaft from being caught and stopped in the middle while satisfactorily exerting the buffering effect of the buffer means.

2 is a cross-sectional view illustrating a configuration of a main part of the printer 100. FIG. It is a perspective view when a roll sheet R is set on a temporary placement table. It is sectional drawing explaining the movement of the roll sheet R when setting the roll sheet R to the roll holder 21 from a temporary placement stand. FIG. 6 is a view in which a roll sheet R is mounted on a spool shaft 210. It is a figure explaining the right end part (reference side of the spool shaft 210) of the spool shaft 210. It is a figure explaining the left end part of the spool axis | shaft 210. FIG. It is a detailed view on the right side (reference side) of the spool shaft 210 when the roll sheet R is set on the temporary placement table. It is sectional drawing of the roll holder 21 for demonstrating the shape of the downward inclined surface 21b of the roll holder 21. FIG. It is a figure explaining the movement of the spool axis | shaft 210 and the effect | action time of the buffer member 240. FIG. It is a figure explaining the place which takes out the spool axis | shaft 210 diagonally. It is a figure showing the contact state of a positioning part when taking out the spool axis | shaft.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  Hereinafter, an ink jet printer will be described as an example of a recording apparatus. However, the printer of the present invention can also be applied to a multifunction machine having a copying function and a scanning function, a so-called multifunction printer. As the inkjet method, various methods such as a method using a heating element, a method using a piezo element, a method using an electrostatic element, and a method using a MEMS element can be used. Further, the printing method is not limited to the ink jet method, and can be applied to various methods such as an electrophotographic method and a thermal transfer method.

  FIG. 1 is a cross-sectional view showing a configuration of a main part of a printer 100 having a roll sheet support device of the present embodiment. The overall configuration includes a printer main body 1, a sheet supply unit 2 as a sheet supply device, a printing unit 3 as a sheet processing unit, a cutter 4, a stand 5, a basket 6, a discharge guide 7, and the like. In this specification, the cut sheet P and the roll sheet R are collectively referred to as a sheet.

  The printer main body 1 holds each part constituting the ink jet printer 100 and is supported by a stand 5 at a height that is easy for a user to operate from the installation floor. The legs 51 of the stand 5 are provided with casters 52 for facilitating movement on the installation surface.

  The sheet supply unit 2 includes a roll holder 21 that rotatably supports the roll sheet R in the vicinity of both ends of the rotation center Rc. Further, the sheet supply unit 2 covers the upper part of the roll sheet R, and supports the roll cover 22, the roll sheet R, and the cut sheet P that are rotatably supported substantially coaxially with the rotation center Rc. have.

  As shown in FIG. 4, the roll sheet R is supported by flanges 217 and 218 fixed to the spool shaft 210, and the roll sheet R and the spool shaft 210 rotate together.

  The roll holder 21 includes an opening 21a for guiding the spool shaft 210 to which the roll sheet R is fixed into the sheet supply unit 2, and a downward inclined surface 21b for guiding the spool shaft therefrom. The inclined surface 21b is configured to guide the spool shaft 210, to which the roll sheet R is fixed, to the set position 21c and to support the roll sheet R so as to be rotatable at the set position 21c.

  FIG. 2 is a view showing a state in which bearing portions 211 and 214 of the spool shaft 210 to be described later are placed on the temporary placement tables 200 and 201. FIG. 3 is a cross-sectional view for explaining the movement of the roll sheet R when the roll sheet R fixed to the spool shaft 210 is set on the roll holder 21 from the temporary placement bases 200 and 201. 2 to 3, the user places the bearing portions 211 and 214 of the spool shaft 210 on the temporary placement tables 200 and 201. Thereafter, when the spool shaft 210 is moved in the direction of the opening 21 a of the roll holder 21, the bearing portions 211 and 214 of the spool shaft 210 slide down the downward inclined surface 21 b. The spool shaft 210 moves to the setting position 21c, and the roll sheet R fixed to the spool shaft 210 is set in the sheet supply unit 2.

  The roll cover 22 covers the upper surface of the roll sheet R held by the roll holder 21 to protect the roll sheet R from dirt such as dust. The roll sheet 22 is attached to and detached from the roll holder 21 after the roll cover 22 is rotationally moved in the direction of the arrow K to open. The rotation center 22a of the roll cover 22 is provided at a position where the inner part of the roll cover 22 does not contact the outer periphery of the roll sheet R. That is, specifically, it is desirable to be substantially coaxial with the rotation center Rc of the roll sheet R held by the roll holder 21.

  The supply path 23 is configured to guide the roll sheet R or the cut sheet P described above in the direction of the printing unit 3. The supply path 23 includes an upper guide 24, a lower guide 25, and the like, and uses a gap (narrow path) between the upper guide 24 and the lower guide 25 facing each other as a sheet guide path. Accordingly, the supply path 23 is configured to guide one end of the roll sheet R or cut sheet P supplied from the sheet supply unit 2 on the side close to the print unit 3 toward the print unit 3. The supply path 23 is bent in an obliquely downward direction toward the printing unit 3 from the introduction unit E which is a sheet insertion portion, and further bent at a bent portion 23a which is a holding unit on the way, and is substantially horizontal toward the printing unit 3 direction. A guideway is formed. Both the upper guide 24 and the lower guide 25 are provided with a rotatable auxiliary roller 26 for assisting the smooth passage of the sheet.

  The printing unit 3 performs printing on the sheet supplied at the printing position. The printing unit 3 includes a conveyance roller 32 for conveying a sheet and a platen 33 for guiding the sheet during a printing operation. Furthermore, a print head 31 positioned on the opposite side of the platen 33 across the sheet, and a carriage 34 that removably scans the print head 31 in a direction orthogonal to the sheet conveyance direction are provided. During printing, ink ejection from the print head 31 synchronized with the reciprocation of the carriage 34 and sheet conveyance are alternately repeated to print an image on the sheet.

  A cutter 4 for cutting the roll sheet R when the sheet is the roll sheet R is provided on the downstream side of the printing position. The printed cut sheet P or the roll sheet R cut by the cutter 4 slides down on the descending slope of the discharge guide 7 by its own weight and falls in the direction of the basket 6. The basket 6 is supported by the stand 5 and configured to accommodate a sheet that is discharged and dropped. The basket 6 can be folded or shrunk as necessary to save space when not in use.

  Here, the operation in the case of the roll sheet R will be described. The user inserts the leading end of the roll sheet R held by the roll holder 21 from the introduction part E and supplies it to the printing part 3 through the supply path 23. The roll sheet R transported by the transport roller 32 serving as a transport unit alternately repeats the ejection of ink from the print head 31 serving as a recording unit synchronized with the reciprocation of the carriage 34 and the transport of the sheet. Print an image on. After the end of printing, the rear end portion of the printed image is conveyed to the position of the cutter 4 and cut. The separated roll sheet R slides down on the descending slope of the discharge guide 7 by its own weight, and falls in the basket 6 direction and is accommodated.

  Next, the main part of the present invention will be described in detail with reference to examples. 4 is a view in which the roll sheet R is mounted on the spool shaft 210, and FIGS. 5 and 6 show details of both end portions (one-dot chain line round portions) of the spool shaft 210 shown in FIG. FIG. 5 is a detailed view of the right end of the spool shaft 210 (reference side of the spool shaft 210), and FIG. 6 is a detailed view of the left end of the spool shaft 210. In FIG. 4, flanges 217 and 218 fixed to the spool shaft 210 support both ends of the roll sheet R, and the roll sheet R is integrally fixed to the spool shaft 210. In FIG. 5, the spool shaft 210 that supports the roll sheet R passes through the reference bearing 211 and is rotatable in the circumferential direction with respect to the reference bearing 211.

  The external appearance of the reference bearing 211 is formed by laminating three cylinders having different diameters, and a cylinder having the smallest diameter is arranged at the center to form a constricted groove shape. The reference bearing 211 has a first abutting surface 211a on one of the wall surfaces orthogonal to the central cylinder, and a second abutting surface 211b on the opposite side. These contact surfaces 211 a and 211 b function to position the spool shaft 210 in the axial direction (longitudinal direction of the spool shaft 210) with respect to the roll holder 21. The first contact surface 211a is disposed closer to the center of the spool shaft 210 than the second contact surface 211b. The first contact surface 211a is larger in the radial direction than the second contact surface 211b. The outer peripheral surface of the smallest cylinder and the roll holder 21 are in contact with each other and positioned at the rotation center 21c. Each of the abutment surfaces is preferably as smooth as possible in order to be slidably joined to each component described later. Furthermore, if the material used is a resin, it is desirable to use a material having a high slip property such as acetal copolymer (Polyplastics Co., Ltd.) or Lübmer (Mitsui Chemicals Co., Ltd.).

  By the way, the spool shaft 210 penetrates the gear 213 and the cap 212 as well as the reference bearing 211, the spool shaft 210 is fixed to the gear 213 in the circumferential direction, and the spool shaft 210 is circumferential with respect to the cap 212. It can turn freely. The gear 213 is connected to a gear (not shown) on the sheet supply unit 2 side, and transmits torque in a direction to rewind the roll sheet R supported by the spool shaft 210. Further, the cap 212 is rotatable with respect to the spool shaft 210 and is configured to abut against a buffer member 240 which is a damper described later.

  In FIG. 6, the spool shaft 210 that supports the roll sheet R penetrates the bearing 214 at the center axis thereof and is rotatable in the circumferential direction with respect to the bearing 214. Similarly, the spool shaft 210 passes through the torque limiter 215 and the one-way clutch 216. Incidentally, the torque limiter 215 is coupled to the one-way clutch 216 in both rotational directions. Here, the spool shaft 210 is rotatable in the circumferential direction with respect to the torque limiter 215. On the other hand, the spool shaft 210 is rotatable in the circumferential direction in the direction of rewinding the roll sheet R with respect to the one-way clutch 216, and is fixed in the circumferential direction in the direction of pulling out the roll sheet R.

  FIG. 7 is a detailed view on the right side (reference side) of the spool shaft 210 when the roll sheet R in FIG. 2 is set on the temporary placement bases 200 and 201. Walls 200a and 201a are formed on both sides of the spool shaft 210 on the temporary placement tables 200 and 201 arranged on the left and right sides, and the spool shaft 210 is set inside the walls 200a and 201a of the temporary placement tables 200 and 201. It is configured as follows. In this case, a configuration may be adopted in which tapered walls 200a and 200b are provided with tapered surfaces so that the spool shaft 210 can be easily set on the temporary placement tables 200 and 201.

  FIG. 8 is a cross-sectional view of the roll holder 21 for explaining the shape of the downward inclined surface 21b of the roll holder 21 in FIG. On the downward inclined surface 21b of the roll holder 21, a regulation guide 202, which is a guide means for guiding the reference bearing 211 of the spool shaft 210 to the set position, is formed. The regulation guide 202 has a rib shape with a predetermined thickness. The surface of the restriction guide 202 that faces the first contact surface 211a of the reference bearing 211 is in contact with the first contact surface 211a and restricts the movement of the spool shaft 210 in the X1 direction (first direction). 202a is configured. The surface of the restriction guide 202 that faces the second contact surface 211b contacts the second contact surface 211b to restrict the spool shaft 210 in the X2 direction (the second direction opposite to the first direction). The 2nd guide 202b to perform is comprised.

  At the set position of the reference bearing 211, the first reference surface 203 is in contact with the first contact surface 211a of the reference bearing 211 to control the position, and the second reference surface 202c is in contact with the second contact surface 211b. regulate.

  At the end of the regulation guide 202 on the temporary placement position side, the first guide 202 a regulates the position of the first contact surface 211 a at the same position as the first reference surface 203. Further, at the end of the regulation guide 202 on the temporary placement position side, the distance between the first guide 202a and the second guide 202b is narrower than the distance between the first contact surface 211a and the second contact surface 211b. Therefore, the reference bearing 211 is roughly regulated at the end of the regulation guide 202 on the temporary placement position side, and the spool shaft 210 is regulated so as to be largely movable in the axial direction compared to the set position. When placed on the temporary placement table 200, the first contact surface 211a is not positioned outside the first reference surface 203 in the axial direction, and the first contact surface 211a is in contact with the first guide 202a. In this case, the position is already restricted to the same position in the sheet width direction as the set position.

  Since both the first guide 202a and the second guide 202b move toward the second contact surface 211b as they approach the set position, the first guide 202a gradually moves away from the first contact surface 211a. At the same time, the second guide 202b abuts on the second abutment surface 211b to restrict the spool shaft 210 in the X2 direction. Before reaching the set position, the second guide 202b regulates the position of the second contact surface at the same position as the second reference surface in the axial direction. In the set position, the position of the first contact surface 211a is regulated by the first reference surface 203, and the position of the second contact surface 211b is regulated by the second reference surface 202c.

  That is, the first guide 202a has a portion that restricts the position of the first contact surface 211a at the same position as the first reference surface 203 in the axial direction. The second guide 202b has a portion that restricts the position of the second contact surface 211b at the same position as the second reference surface 202c in the axial direction on the set position side of the portion.

  The first reference surface 203 comes into contact with the first contact surface 211a only on the right side of the virtual plane perpendicular to the paper surface of FIG. 8 through the rotation center of the spool shaft 210 at the set position. The second reference surface contacts the second contact surface 211b only on the left side of the same virtual plane. That is, the region where the position of the first contact surface is regulated by the first reference surface and the region where the position of the second contact surface is regulated by the second reference surface are related to a virtual plane including the center line of the spool shaft. Not on the same side. Further, the first reference surface 203 is located closer to the set position of the virtual plane than the second reference surface 202c. Therefore, the position restriction of the reference bearing 211 here allows the spool shaft to rotate counterclockwise as shown in FIG. As shown in FIG. 11A, the region where the first contact surface is regulated by the first reference surface and the region where the second contact surface is regulated by the second reference surface are If they are on the same side with respect to the virtual plane including the center line, rotation is not allowed.

  The embodiment of the present invention is configured as described above, and here, how the mounting and positioning of the spool shaft 210 of this embodiment are performed will be described with reference to FIG. First, when the user places the spool shaft 210 on the temporary placement table 200, the spool shaft 210 is set inside the walls 200a and 201a of the temporary placement tables 200 and 201. Therefore, the position of the spool shaft 210 in the paper width direction is To some extent (roughly). In this state, when the spool shaft 210 is moved in the direction of the opening 21 a of the roll holder 21, the regulation guide 202 enters between the first contact surface 211 a and the second contact surface 211 b of the reference bearing 211. As the spool shaft 210 slides down the descending inclined surface 21b, the second guide 202b comes into contact with the second contact surface 211b in the middle, so that the spool shaft 210 moves in the paper width direction X1. In synchronization with this, the first guide 202a is separated from the first contact surface 211a. When the second contact surface 211b reaches the second guide 202b, the movement of the spool shaft 210 in the paper width direction X2 is completed. That is, the positioning of the spool shaft 210 in the axial direction is completed. Thereafter, the spool shaft 210 moves under its own weight, and when it reaches the rotation center portion 21c of the roll holder 21, the outer peripheral surface of the smallest cylinder and the roll holder 21 are brought into contact with each other and positioned. Regarding the axial direction, the first contact surface 211 a and the second contact surface 211 b of the reference bearing 211 are fixed by the positioning members 203 and 211 c of the roll holder 21.

  Next, a configuration in which a buffer member, which is a damper for suppressing the moving speed of the spool shaft 210, is arranged in addition to the present embodiment will be described. The buffer member 240 is disposed so as to act on the cap of the spool shaft 210 when the spool shaft 210 is set in the roll holder. FIGS. 9A to 9D are diagrams illustrating the movement of the spool shaft 210 and the operation timing of the buffer member 240 when the spool shaft 210 is mounted. In FIGS. 9A and 9B, the second contact surface 211b of the reference bearing 211 of the spool shaft 210 moved from the temporary placement table is guided in contact with the second guide 202b. FIG. 9C shows a state where the cap 212 of the spool shaft 210 is in contact with the buffer member 240 and the operation of the buffer member 240 is started. Immediately before the cap 212 and the buffer member 240 abut, the second guide 202b positions the second abutment surface 211b at the same position as the second reference surface 202c. After the positioning of the spool shaft 210 is completed, the cap 212 contacts the buffer member 240. Moreover, at the position where the cap 212 contacts the buffer member 240, the first guide 202a is located away from the first contact surface 211a. Therefore, while the buffer member 240 is acting on the cap 212, the regulation guide 202 roughly positions the reference bearing 211 and regulates the position so that the axially movable range is larger than the set position. . Therefore, the reference bearing 211 is not caught by the restriction guide 202 and stopped.

  Note that a damper using an urging means such as an air damper, an oil damper, or a spring may be used as the buffer member 240. When the spool shaft 210 is removed, the piston of the buffer member 240 is restored and the spool is returned again. Prepare for mounting the shaft 210.

DESCRIPTION OF SYMBOLS 1 Printer main body 2 Sheet supply part 3 Printing part 21 Roll holder 22 Roll cover 23 Supply path 23a Holding part 100 Printer 210 Spool axis R Roll sheet Rc Rotation center of roll sheet R

Claims (9)

A shaft that supports the roll sheet;
A first abutment surface and a second abutment surface provided at one end of the shaft for restricting the axial position of the shaft;
A first reference surface for restricting the movement of the shaft in the first direction by restricting the position of the first contact surface when the shaft is set at a set position of the apparatus main body;
When the shaft is set at the set position of the apparatus main body, the second abutment surface is regulated to restrict the movement of the shaft in the second direction opposite to the first direction. A reference plane,
Guide means for guiding the shaft from the temporarily placed position to the set position;
The guide means includes a first guide for guiding the first contact surface to the first reference surface, and a second guide for guiding the second contact surface to the second reference surface,
The first guide and the second guide restrict the shaft to be movable in the axial direction larger than the set position at the end portion on the temporary placement position side,
The region where the position of the first contact surface is restricted by the first reference surface and the region where the position of the second contact surface is restricted by the second reference surface are virtual including the center line of the axis. A roll sheet supporting apparatus, wherein the roll sheet supporting apparatus is not on the same side with respect to a plane.   2. The roll sheet support device according to claim 1, wherein the first contact surface is disposed closer to the center side of the shaft than the second contact surface, and the first reference surface is on a set position side with respect to the virtual plane.   The roll sheet support device according to claim 2, wherein the first contact surface is larger in the radial direction of the shaft than the second contact surface. A shaft that supports the roll sheet;
A first abutment surface and a second abutment surface provided at one end of the shaft for restricting the axial position of the shaft;
A first reference surface for restricting the movement of the shaft in the first direction by restricting the position of the first contact surface when the shaft is set at a set position of the apparatus main body;
When the shaft is set at the set position of the apparatus main body, the second abutment surface is regulated to restrict the movement of the shaft in the second direction opposite to the first direction. A reference plane,
Guide means for guiding the shaft from the temporarily placed position to the set position;
A damper that suppresses the movement of the shaft guided by the guide means from midway to the set position;
The guide means includes a first guide for guiding the first contact surface to the first reference surface, and a second guide for guiding the second contact surface to the second reference surface,
The first guide and the second guide restrict the shaft to be movable in the axial direction larger than the set position at the end portion on the temporary placement position side,
Before the damper acts on the shaft guided by the guide means, the first guide and the second guide restrict the position of the shaft in the axial direction to substantially the same position as the set position, and the shaft The roll sheet supporting device is characterized in that the position is restricted so that the axially movable range is larger than the set position while the damper is operating.   The roll sheet support device according to claim 4, wherein the first guide and the second guide restrict the position of the shaft so that the axial movable range is always larger than the set position.   The first guide has a portion for restricting the position of the first abutting surface at the same position as the first reference surface in the axial direction, and the second guide on the set position side from the portion is the second reference in the axial direction. The roll sheet support apparatus according to claim 5, further comprising a portion for regulating the position of the second contact surface at the same position as the surface.   The roll sheet support device according to claim 6, wherein the positions of the first guide and the second guide in the axial direction approach the second reference surface as approaching the set position. A shaft that supports the roll sheet;
A first abutment surface and a second abutment surface provided at one end of the shaft for restricting the axial position of the shaft;
A first reference surface for restricting the movement of the shaft in the first direction by restricting the position of the first contact surface when the shaft is set at a set position of the apparatus main body;
When the shaft is set at the set position of the apparatus main body, the second abutment surface is regulated to restrict the movement of the shaft in the second direction opposite to the first direction. A reference plane,
Guide means for guiding the shaft from the temporarily placed position to the set position;
When the shaft is set at the set position of the apparatus main body, the first contact surface is restricted by the first reference surface, and the second contact surface is restricted by the second reference surface. The roll sheet supporting device is characterized in that the region being formed is not on the same side with respect to a virtual plane including the center line of the axis.   The roll sheet support device according to claim 1, a transport unit that transports a roll supported by the roll sheet support device, and a recording that performs recording on the roll sheet transported by the transport unit. And a recording apparatus.