Patent Publication Number: US-2022234371-A1

Title: Recording device and control method for recording device

Description:
The present application is based on, and claims priority from JP Application Serial Number 2021-010086, filed Jan. 26, 2021, the disclosure of which is hereby incorporated by reference herein in its entirety. 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a recording device and a control method for a recording device. 
     2. Related Art 
     In a sheet cutting apparatus described in JP 2015-168051 A, a cutter housing is rotationally moved that includes a cutter that cuts a sheet when heading toward one side in a sheet width direction, and a cutter that cuts the sheet when heading toward another side in the sheet width direction. Thus, cutting the sheet in a forward path and cutting the sheet in a return path are performed. 
     In the configuration of JP 2015-168051 A, when a cutting unit is positioned at a home position being a 0-th place, in order to cut a long medium positioned on a side opposite to the home position side of two long media wound at the same time, the long medium on the home position side that obstructs movement needs to be cut, and there is a possibility that cutting at any timing cannot be performed. 
     SUMMARY 
     In order to solve the above-described problems, a recording device according to the present disclosure includes a transport unit capable of transporting two long media in parallel, a recording unit capable of recording on the two long media transported in parallel, a cutting unit disposed downstream the recording unit in a transport direction of the long medium, movable in a width direction intersecting the transport direction, and capable of cutting the two long media, and a control unit configured to control the transport unit, the recording unit, and the cutting unit, wherein the cutting unit is capable of cutting the long medium in both a forward path and a return path of the movement in the width direction, and the control unit is capable of setting a standby position of the cutting unit to a position between the two long media. 
     In order to solve the above-described problems, a control method for a recording device according to the present disclosure is a control method for a recording device including a transport unit capable of transporting two long media in parallel, a recording unit capable of recording on the two long media transported in parallel, and a cutting unit disposed downstream the recording unit in a transport direction of the long medium, movable in a width direction intersecting the transport direction, and capable of cutting the two long media, the cutting unit capable of cutting the long medium in both a forward path and a return path of the movement in the width direction, the control method including setting a standby position of the cutting unit to a position between the two long media, and causing the cutting unit to cut the two long media on which recording was performed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an overall configuration view of a printer according to Exemplary Embodiment 1. 
         FIG. 2  is a block diagram of the printer according to Exemplary Embodiment 1. 
         FIG. 3  is a side view of a moving unit of the printer according to Exemplary Embodiment 1. 
         FIG. 4  is an enlarged view enlarging a part of the moving unit and a rotating blade in the printer according to Exemplary Embodiment 1. 
         FIG. 5  is a cross-sectional view of a lower portion of the moving unit in the printer according to Exemplary Embodiment 1 as viewed from above. 
         FIG. 6A  is a schematic diagram illustrating a state in which roll paper is cut from one side in a width direction in the printer according to Exemplary Embodiment 1. 
         FIG. 6B  is a schematic diagram illustrating a state in which roll paper is cut from another side in the width direction in the printer according to Exemplary Embodiment 1. 
         FIG. 7  is a schematic diagram illustrating a state in which the moving unit is positioned between two pieces of roll paper with different cutting positions in the printer according to Exemplary Embodiment 1. 
         FIG. 8  is a schematic diagram illustrating a state in which a cutting unit is positioned in a transport region of the roll paper in the printer according to Exemplary Embodiment 1. 
         FIG. 9  is a schematic diagram illustrating a state in which the cutting unit after performing a cutting process in a printer according to Exemplary Embodiment 2 is stopped outside roll paper. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     The following is a schematic description of a first aspect to an eighth aspect of the present disclosure. 
     In order to solve the above-described problems, a recording device according to a first aspect of the present disclosure includes a transport unit capable of transporting two long media in parallel, a recording unit capable of recording on the two long media transported in parallel, a cutting unit disposed downstream the recording unit in a transport direction of the long medium, movable in a width direction intersecting the transport direction, and capable of cutting the two long media, and a control unit configured to control the transport unit, the recording unit, and the cutting unit, wherein the cutting unit is capable of cutting the long medium in both a forward path and a return path of the movement in the width direction, and the control unit is capable of setting a standby position of the cutting unit to a position between the two long media. 
     According to the present aspect, the two long media after recording by the recording unit is cut by the cutting unit moving in the width direction to form media that are each a single sheet. 
     Here, when respective recording lengths in the transport direction of the two long media are different, the standby position of the cutting unit is set to a position between the two long media, and thus the two long media can be cut at any timing regardless of which of the two long media is cut earlier. 
     A recording device according to a second aspect is the recording device according to the first aspect, wherein the control unit is capable of setting a standby position in the width direction of the cutting unit to a first position on an outside in the width direction with respect to the long medium, and to a second position between the two long media. 
     According to the present aspect, when one number of the long medium, which is wide, is cut, a standby position in the width direction of the cutting unit is set to a position, which is the first position, on an outside of any of the long media in the width direction. Further, when the two long media are cut, a standby position in the width direction of the cutting unit is set to a position, which is the second position, between the two long media. In this way, regardless of whether the number of the long media is one or two, interference of the cutting unit with a transport path of the long medium can be suppressed. 
     A recording device according to a third aspect is the recording device according to the second aspect, wherein the control unit is capable of changing the second position in the width direction, in accordance with a size in the width direction of the long medium being transported. 
     According to the present aspect, when the two long media are cut, a standby position of the cutting unit can be changed in accordance with the size in the width direction of the long medium. In this way, for example, when the size in the width direction of the long medium is small, setting the second position closer to the long medium prevents a distance between the cutting unit and the long medium from being excessively large, thus, a delay in start timing of cutting when the cutting unit cuts the long medium can be suppressed. Furthermore, the long media with a variety of widths can be supported. For example, even in a combination of the long medium less than half a transport path width and the long medium greater than half that, recording and cutting are possible. 
     A recording device according to a fourth aspect is the recording device according to any one of the first to third aspects, wherein the control unit returns the cutting unit to a position between the two long media after the cutting unit cuts any one of the two long media. 
     According to the present aspect, when the two long media are cut, the cutting unit returns to a standby position between the two long media after cutting the long medium, thus, regardless of which of the two long media is cut earlier, the two long media can be cut at any timing, and it is possible to prevent start timing of cutting the long medium from being delayed. 
     A recording device according to a fifth aspect is the recording device according to any one of the first to third aspects, wherein the control unit does not return the cutting unit to a position between the two long media when, after one of the two long media is cut, and subsequently the one of the long media is cut. 
     According to the present aspect, the cutting unit is capable of cutting the long medium in both the forward path and the return path. Here, when one of the long media is continuously cut, the cutting unit is not returned to a position between the two long media even when the cutting unit is positioned on an outside in the width direction with respect to the long medium. This makes it possible to prevent a time required for cutting the long medium from extending, because the need for waiting time to return the position of the cutting unit is eliminated. 
     A recording device according to a sixth aspect is the recording device according to any one of the first to fifth aspects, wherein the cutting unit includes a main body portion provided so as to be movable in the width direction, a first cutting blade provided on one side with respect to a center in the width direction of the main body portion and configured to cut the long medium in the width direction, a second cutting blade provided on another side with respect to the center in the width direction of the main body portion and configured to cut the long medium in the width direction, and a guide unit provided between the first cutting blade and the second cutting blade in the main body portion, and configured to guide the long medium cut by one of the first cutting blade and the second cutting blade in a direction away from another of the first cutting blade and the second cutting blade. 
     According to the present aspect, the long medium cut by the one of the first cutting blade and the second cutting blade is guided by the guide unit to move in the direction away from the other of the first cutting blade and the second cutting blade. Thus, the long medium cut by the one of the first cutting blade and the second cutting blade can be prevented from being cut for the second time by the other of the first cutting blade and the second cutting blade. 
     A recording device according to a seventh aspect is the recording device according to any one of the first to sixth aspects that includes a transmission unit configured to transmit position information in the width direction of the cutting unit to the control unit, wherein the control unit, based on the position information, when at least a part of the cutting unit is positioned inside a transport region of the long medium, stops transport of the long medium in the transport unit. 
     According to the present aspect, it is possible to prevent interference between the long medium transported by the transport unit and the cutting unit. 
     A control method for a recording device according to an eighth aspect is a control method for a recording device including a transport unit capable of transporting two long media in parallel, a recording unit capable of recording on the two long media transported in parallel, and a cutting unit disposed downstream the recording unit in a transport direction of the long medium, movable in a width direction intersecting the transport direction, and capable of cutting the two long media, the cutting unit capable of cutting the long medium in both a forward path and a return path of the movement in the width direction, the control method including setting a standby position of the cutting unit to a position between the two long media, and causing the cutting unit to cut the two long media on which recording was performed. 
     According to the present aspect, an action effect similar to that in the recording device according to the first aspect can be obtained. 
     An example of the recording device and the control method for the recording device according to the present disclosure will be described below in detail. In each of the drawings, an X direction along an X-axis is an example of a width direction of a printer  10 , which will be described later, and a width direction of a long medium. A −X direction is a left direction as viewed from a user when a device front face faces the user, and an +X direction is a right direction. 
     A Y direction along a Y-axis is an example of a device depth direction of the printer  10 . A +Y direction is a direction heading from a device rear face toward the front face, and is an example of a transport direction on a platen  30  of a sheet P, which will be described later. A −Y direction is a direction heading from the device front face toward the rear face. The X and Y directions are horizontal directions. 
     A Z direction along a Z-axis is a device height direction of the printer  10  and a vertical direction, a +Z direction is vertically upward, and a −Z direction is vertically downward. The X direction, the Y direction, and the Z direction are mutually orthogonal. The sheet P is an example of the long medium. In the following description, the sheet P in a roll shape is referred to as roll paper PR, and is distinguished from the sheet P in a sheet shape that is referred to as cut paper PS. 
     Exemplary Embodiment 1 
     In  FIG. 1 , the printer  10  is illustrated as an example of a recording device according to Exemplary Embodiment 1. In the +Y direction for the printer  10 , a loading device (not illustrated) is provided on which the cut paper PS is to be loaded. The printer  10  includes a cuboid-shaped housing  12 . In the printer  10 , recording on plain paper and photographic paper is also possible. 
     Specifically, the printer  10  includes a storage unit  14 , a transport unit  16 , a recording unit  18 , a discharge unit  24 , a control unit  26 , the platen  30 , and a cutting system  40  including a cutter unit  41 , in an inside of the housing  12 . 
     The housing  12  includes a side wall  13  that constitutes a wall portion in the +Y direction of the housing  12 . A discharge port  19  that penetrates in the Y direction is formed in the side wall  13 . 
     As an example, the storage unit  14  stores a total of four pieces of the roll paper PR each rotated around a center axis along the X direction, the four pieces including two pieces with an interval in the X direction for each of upper and lower two stages. 
     The transport unit  16  includes a plurality of transport roller pairs  17 . Furthermore, the transport unit  16  transports the roll paper PR, drawn from the storage unit  14 , downstream along a transport path K indicated by long dashed double-short dashed line. Furthermore, the transport unit  16  is capable of transporting only one number of the roll paper PR, or two number of the roll paper PR in parallel in the X direction. 
     The recording unit  18  is capable of recording on a piece of the roll paper PR, or on two pieces of the roll paper PR that are transported in parallel in the X direction, while being moved in the X direction. Specifically, the recording unit  18  records on the roll paper PR transported in the +Y direction by the transport unit  16 , by discharging ink Q as an example of droplets while being reciprocally moved in the X direction. Note that, the roll paper PR is transported in the +Y direction, in a region facing the recording unit  18 . Additionally, the recording unit  18  is positioned in the +Z direction with respect to the roll paper PR. In other words, recording is performed on an upper surface in the +Z direction of the roll paper PR. Furthermore, the recording unit  18  is capable of recording on the roll paper PR having a plurality of sizes with different widths in the X direction. 
     The discharge unit  24  includes a support  25  disposed downstream the cutter unit  41  described below, and a discharge roller pair  28 . The support  25  supports and guides the cut paper PS cut by the cutter unit  41  to the discharge port  19 . The discharge roller pair  28  transports the cut paper PS cut toward the support  25 . The cut paper PS discharged from the discharge port  19  is transported to the loading device (not illustrated). 
     The platen  30  is disposed facing the recording unit  18 , and extends in the X direction. The platen  30  supports the roll paper PR. In addition, the platen  30  is formed in a hollow, rectangular cylindrical shape, and is exhausted by an exhaust unit (not illustrated), thereby making an inside thereof is a negative pressure chamber. Thus, the roll paper PR being transported is attracted to the platen  30 . 
     As illustrated in  FIG. 2 , the control unit  26  controls operation of the transport unit  16 , the recording unit  18 , and the cutter unit  41 , which is described below. Specifically, the control unit  26  is configured as a computer including a Central Processing Unit (CPU)  26 A, a memory  26 B, and a storage  26 C. Note that, control of the operation of the cutter unit  41  by the control unit  26  will be described later. 
     The cutting system  40  includes, as an example, the cutter unit  41 , a movement mechanism unit  62 , a rotation mechanism unit  64 , a position sensor  66 , and a transmission unit  68 . 
     The cutter unit  41  includes a main body portion  42 , and a rotating blade unit  47 . Note that, details of the cutter unit  41  will be described later. 
     The movement mechanism unit  62  moves the main body portion  42  in the X direction. The rotation mechanism unit  64  rotates the rotating blade unit  47  described later. In the present exemplary embodiment, as an example, the movement mechanism unit  62  and the rotation mechanism unit  64  are assembled as one mechanism unit. 
     As an example, the movement mechanism unit  62  and the rotation mechanism unit  64  are configured to include a slider, a motor, a timing belt, and a pulley (not illustrated), and operation thereof is controlled by the control unit  26 . 
     The slider that allows the cutter unit  41  to move in the X direction is attached to the timing belt. The timing belt is moved in the X direction by rotation of the motor. This allows the cutter unit  41  to move in the X direction. The timing belt has a width greater than a width of a maximum size of the roll paper PR. 
     The rotating blade unit  47  described below is linked to a pulley. The pulley is in contact with the timing belt. Thus, as the timing belt moves, the rotating blade unit  47  is rotated. In this way, the cutting system  40  has structure in which the rotating blade unit  47  is rotated in conjunction with movement in the X direction of the cutter unit  41 . 
     The position sensor  66  detects a position in the X direction of the main body portion  42 . In the present exemplary embodiment, as an example, the position sensor  66 , which is of an optical type, is used, but a magnetic position sensor or other type of position sensor may be used. Position information in the X direction of the main body portion  42  obtained in the position sensor  66  is transmitted to the control unit  26  via the transmission unit  68 . Note that, the position sensor  66  and the transmission unit  68  may be integrated. 
     As illustrated in  FIG. 1 , the cutter unit  41  is disposed downstream the recording unit  18  and upstream the discharge unit  24  in the +Y direction, which is the transport direction of the roll paper PR. The cutter unit  41  is movable in the X direction intersecting the Y direction. The cutter unit  41  is capable of cutting two pieces of the roll paper PR disposed side by side in the X direction. Furthermore, the cutter unit  41  is capable of cutting the roll paper PR in both the forward path and the return path of the movement in the X direction. Note that, while both the forward path and the return path are along the X direction, orientation of the forward path and the return path varies depending on a situation in which cutting is performed. 
     As illustrated in  FIG. 3 , the cutter unit  41  is an example of the cutting unit, and includes the main body portion  42 , the rotating blade unit  47  provided at the main body portion  42 , and a guide unit  72  provided at the main body portion  42 . 
     Then, the cutter unit  41  cuts the roll paper PR after recording by the recording unit  18  ( FIG. 1 ) to form the cut paper PS. 
     The main body portion  42  is provided so as to be movable in the X direction by the movement mechanism unit  62  ( FIG. 2 ). Further, the main body portion  42  includes a main body lower portion  43 , a main body upper portion  44 , and a coupling portion  45 . 
     The main body lower portion  43  configures a portion in the −Z direction from a center in the Z direction of the main body portion  42 . The main body lower portion  43  is formed as a long member extending in the X direction. 
     The main body upper portion  44  configures a portion in the +Z direction from the center in the Z direction of the main body portion  42 . The main body upper portion  44  is formed as a long member extending in the X direction. 
     The coupling portion  45  configures a central portion in the Z direction of the main body portion  42 . The coupling portion  45  links, in the Z direction, a central portion in the X direction of the main body lower portion  43 , and a central portion in the X direction of the main body upper portion  44 . 
     The coupling portion  45  also functions as a strut that supports the main body upper portion  44 . On portions other than the coupling portion  45  in the main body portion  42 , the main body lower portion  43  and the main body upper portion  44  are disposed with an interval in the Z direction. The guide unit  72 , which will be described later, is provided at the coupling portion  45 . 
     The rotating blade unit  47  is, as an example, configured with a first cutting blade  48 , and a second cutting blade  49 . The first cutting blade  48  is provided in the +X direction, which is one side with respect to a center in the X direction of the main body portion  42 . The first cutting blade  48  cuts, in the +X direction, the roll paper PR being transported in the +Y direction. Specifically, the first cutting blade  48  is configured with a lower rotating blade  52  and an upper rotating blade  54 . Then, the first cutting blade  48  cuts the roll paper PR in the +X direction, by the lower rotating blade  52  and the upper rotating blade  54  rotated in a state of sandwiching the roll paper P. 
     The lower rotating blade  52  is protruded in the +Z direction from the main body lower portion  43  at a part in the +X direction from a center in the X direction of the main body lower portion  43 , and is provided so as to be able to rotate about an axis along the Y direction. 
     The upper rotating blade  54  is protruded in the −Z direction from the main body upper portion  44  at a part in the +X direction from a center in the X direction of the main body upper portion  44 , and is provided so as to be able to rotate about an axis along the Y direction. 
     The second cutting blade  49  is provided in the −X direction, which is another side with respect to the center in the X direction of the main body portion  42 . The second cutting blade  49  cuts, in the +X direction, the roll paper PR being transported in the +Y direction. Specifically, the second cutting blade  49  is configured with a lower rotating blade  56  and an upper rotating blade  58 . Then, the second cutting blade  49  cuts the roll paper PR in the −X direction, by the lower rotating blade  56  and the upper rotating blade  58  rotated in a state of sandwiching the roll paper P. 
     The lower rotating blade  56  is protruded in the +Z direction from the main body lower portion  43  at a part in the −X direction from the center in the X direction of the main body lower portion  43 , and is provided so as to be able to rotate about an axis along the Y direction. 
     The upper rotating blade  58  is protruded in the −Z direction from the main body upper portion  44  at a part in the −X direction from the center in the X direction of the main body upper portion  44 , and is provided so as to be able to rotate about an axis along the Y direction. 
     Note that, as an example, the first cutting blade  48  and the second cutting blade  49  are disposed and configured to be linearly symmetrical with respect to a line (not illustrated) passing through a center in the X direction of the main body portion  42  and extending in the Z direction. 
     As illustrated in  FIG. 4 , in the first cutting blade  48 , the upper rotating blade  54  is disposed approximately along an X-Z plane, while the lower rotating blade  52  is disposed along a direction intersecting the X-Z plane. A position at which the lower rotating blade  52  and the upper rotating blade  54  contacts each other is a cutting position at which the sheet P is cut. 
     Note that, the second cutting blade  49  ( FIG. 3 ) is configured to be linearly symmetrical with the first cutting blade  48  as described above, and thus descriptions thereof will be omitted. 
     As illustrated in  FIG. 5 , the guide unit  72  is provided between the first cutting blade  48  and the second cutting blade  49  in the main body portion  42 . Further, the guide unit  72  guides the roll paper PR cut by one of the first cutting blade  48  and the second cutting blade  49 , in a direction away from another of the first cutting blade  48  and the second cutting blade  49 . 
     Specifically, as an example, the guide unit  72  is formed at a side surface  45 A in the +Y direction of the coupling portion  45 . Additionally, the guide unit  72  includes a first inclined surface  74 , a flat surface  76 , and a second inclined surface  78 . 
     The first inclined surface  74  is a surface that is inclined in a direction intersecting the X direction as viewed in the +Z direction, and an end portion in the −X direction is positioned in the +Y direction with respect to an end portion in the +X direction. Then, the first inclined surface  74  guides, in the +Y direction, a portion separated in the +Y direction of the roll paper PR cut by the first cutting blade  48 . 
     The flat surface  76  extends in the +X direction from the end portion in the +X direction of the first inclined surface  74 . Also, the flat surface  76  is a flat surface along the X-Z plane. The flat surface  76  guides the roll paper PR in the −X direction or the +X direction. 
     The second inclined surface  78  is a surface that is inclined in a direction intersecting the X direction as viewed in the +Z direction, and an end portion in the +X direction is positioned in the +Y direction with respect to an end portion in the −X direction. Then, the second inclined surface  78  guides, in the +Y direction, a portion separated in the +Y direction of the roll paper PR cut by the second cutting blade  49 . 
     Note that, as an example, the first inclined surface  74  and the second inclined surface  78  are formed symmetrically with respect to a center in the X direction of the coupling portion  45 . 
     Control performed by the control unit  26  in the printer  10  illustrated in  FIG. 2  will be described. Note that, for each unit constituting the printer  10 , reference is made to  FIG. 1  to  FIG. 5 , and descriptions of individual drawing numbers will be omitted. 
     The control unit  26  sets a standby position of the cutter unit  41  to a position between the two pieces of roll paper PR, in a mode in which the recording unit  18  records in parallel on the two pieces of roll paper PR aligned in the X direction. 
     The control unit  26  is capable of setting the standby position of the cutter unit  41  in the X direction to a first position on an outer side in the X direction with respect to the roll paper PR, and to a second position between the two pieces of roll paper PR aligned in the X direction. As an example, in a mode in which only one piece of the roll paper PR is transported in the +X direction, the first position in the +X direction with respect to the roll paper PR is set to the standby position. Furthermore, in a mode in which two pieces of the roll paper PR are transported in parallel, the second position is set to the standby position. 
     The control unit  26  is capable of changing the second position in the X direction, in accordance with a size in the X direction of the roll paper PR being transported. In other words, when the size in the X direction of the roll paper PR is changed from small to large, the control unit  26  shifts the second position in the −X direction so that the cutter unit  41  and the roll paper PR are not in contact. 
     The control unit  26 , after the cutter unit  41  cuts one of the two pieces of roll paper PR, returns the cutter unit  41  to a position between the two pieces of roll paper PR. 
     As illustrated in  FIG. 8 , the control unit  26 , based on position information in the X direction of the cutter unit  41  obtained in the position sensor  66 , stops transporting the roll paper PR in the transport unit  16 , when at least a part of the cutter unit  41  is positioned inside a transport region S of the roll paper PR. For example, as in a cutter unit  41 A or a cutter unit  41 B indicated by an imaginary line in  FIG. 8 , transport of the roll paper PR is stopped when the cutter unit  41  is positioned inside the transport region S. 
     After setting the standby position of the cutter unit  41  to a position between the two pieces of roll paper PR, the control unit  26  controls for recording on the two pieces of roll paper PR, and for causing the cutter unit  41  to cut the two pieces of roll paper PR after recording. 
     Next, actions of the printer  10  according to Exemplary Embodiment 1 will be described. For each unit of the printer  10 , reference is made to  FIG. 1  to  FIG. 5 , and descriptions of individual drawing numbers will be omitted. 
     As illustrated in  FIG. 6A , a case in which there is one piece of the roll paper PR will be described. A first image A 1  and a second image A 2  are formed on the roll paper PR after recording. In addition, on the roll paper PR, a planned cut position M 1  is set between the image A 1  and the image A 2 , and a planned cut position M 2  is set to a position in the −Y direction with respect to the image A 2 . The planned cut positions M 1  and M 2  are indicated by imaginary lines Ml and M 2 , respectively, but are not actually visible. 
     When the planned cut position M 1  reaches the +X direction with respect to the cutter unit  41  by transporting of the roll paper PR, moving of the cutter unit  41  in the +X direction is started. Then, the first cutting blade  48  ( FIG. 3 ) cuts the roll paper PR in the +X direction. 
     As illustrated in  FIG. 6B , the planned cut position M 2  is set between the second image A 2  and a third image A 3 . When the planned cut position M 2  reaches the +X direction with respect to the cutter unit  41  by transporting of the roll paper PR, moving of the cutter unit  41  in the −X direction is started. Then, the second cutting blade  49  ( FIG. 3 ) cuts the roll paper PR in the −X direction. Thus, after cutting the roll paper PR in each of the forward path and the return path, the cutter unit  41  waits at the standby position on an outside in the X direction with respect to the roll paper PR. In this case, the cutter unit  41  remains at a position in the X direction where cutting of the roll paper PR ends. 
     In this way, the cutter unit  41 , for a piece of the roll paper PR, cuts the roll paper PR in each of the forward path and the return path in a state of not returning to the standby position, thus throughput in cutting the roll paper PR can be improved, compared to a configuration in which the cutter unit  41  returns to the standby position on an opposite side of the roll paper PR each time the cutter unit  41  cuts in the X direction once. 
     As illustrated in  FIG. 7 , a case in which two pieces of the roll paper PR are disposed will be described. The image A 1  and the image A 2  are recorded on the roll paper PR in the +X direction, as an example. In addition, on the roll paper PR in the +X direction, a plurality of the planned cut positions M are set at intervals of length L 1  in the Y direction. 
     An image B 1 , and image B 2 , and an image B 3  are recorded on the roll paper PR in the −X direction, as an example. In addition, on the roll paper PR in the −X direction, a plurality of planned cut positions N are set at intervals of a length L 2  in the Y direction for the image B 1 , the image B 2 , and the image B 3 . The length L 2  is shorter than the length L 1 . 
     When the two pieces of roll paper PR are disposed, the standby position of the cutter unit  41  is set to a position between the two pieces of roll paper PR. Subsequently, the two pieces of roll paper PR after recording are cut by the cutter unit  41 . Specifically, after cutting the roll paper PR in the +X direction at the planned cut position M, the cutter unit  41  is returned to the standby position, which is the position between the two pieces of roll paper PR. Subsequently, after cutting the roll paper PR in the −X direction at the planned cut position N, the cutter unit  41  is returned to the standby position. 
     In this way, since the standby position is set between the two pieces of roll paper PR, the cutter unit  41  is capable of cutting both the roll paper PR in the +X direction and the roll paper PR in the −X direction at any timing. 
     As described above, according to the printer  10 , the two pieces of roll paper PR after recording by the recording unit  18  are cut by the cutter unit  41  moving in the X direction to form pieces of cut paper PS that are each shingle paper. 
     Here, in the two pieces of roll paper PR, when recording lengths in the Y direction are different from each other, since the standby position of the cutter unit  41  is set to the position between the two pieces of roll paper PR, the two pieces of roll paper PR can be cut at any timing regardless of which of the two pieces of roll paper PR is to be cut earlier. 
     According to the printer  10 , when a piece of the roll paper PR, which is wide, is cut, the standby position in the X direction of the cutter unit  41  is set to a position, which is the first position, on an outside of any of the pieces of roll paper PR in the X direction. Furthermore, when two pieces of the roll paper PR are cut, the standby position of the cutter unit  41  in the X direction is set to the position, which is the second position, between the two pieces of roll paper PR. This makes it possible to suppress interference of the cutter unit  41  with the transport path K of the roll paper PR, regardless of the number of the pieces of roll paper PR is one or two. 
     Furthermore, when the two pieces of roll paper PR are cut, the standby position of the cutter unit  41  can be changed according to the size in the X direction of the roll paper PR. In this way, when the size in the X direction of the roll paper PR is small, for example, by setting the second position closer to the roll paper PR, a distance in the X direction between the cutter unit  41  and the roll paper PR is prevented from being excessively large, so it is possible to suppress a delay in start timing of cutting when the cutter unit  41  cuts the roll paper PR. Furthermore, it is possible to support the roll paper PR having various widths. For example, even for a combination of the roll paper PR that is less than half a transport path width and the roll paper PR greater than half the transport path width, recording and cutting are possible. 
     According to the printer  10 , when the two pieces of roll paper PR are cut, the cutter unit  41  returns to the standby position between the two pieces of roll paper PR after cutting the roll paper PR, thus regardless of which of the two pieces of roll paper PR is cut earlier, the two pieces of roll paper PR can be cut at any timing, and it is possible to suppress a delay in start timing of cutting of the roll paper PR. 
     According to the printer  10 , the roll paper PR cut by one of the first cutting blade  48  and the second cutting blade  49  is guided by the guide unit  72  to move in a direction away from another of the first cutting blade  48  and the second cutting blade  49 . Thus, the roll paper PR cut by the one of the first cutting blade  48  and the second cutting blade  49  can be prevented from being cut for the second time by the other of the first cutting blade  48  and the second cutting blade  49 . 
     According to the printer  10 , when at least a part of the cutter unit  41  is positioned inside the transport region S of the roll paper PR, transport of the roll paper PR in the transport unit  16  is stopped. This prevents the roll paper PR transported by the transport unit  16  from interfering with the cutter unit  41 . 
     According to the control method for the printer  10 , similar actions and effects as those of the printer  10  can be obtained. 
     Exemplary Embodiment 2 
     Next, a printer  80  of Exemplary Embodiment 2, which is an example of a recording device, will be described with reference to the accompanying drawings. Note that, common components with the printer  10  ( FIG. 1 ) are referenced using like numbers, and no descriptions for such components are provided below. 
     In  FIG. 9 , two pieces of the roll paper PR transported and subjected to recording in the printer  80 , the recording unit  18 , the control unit  26 , and the cutter unit  41  are illustrated. 
     When one of the two pieces of roll paper PR is cut and subsequently the one roll paper PR is cut, the control unit  26  of Exemplary Embodiment 2 does not return the cutter unit  41  to a standby position between the two pieces of roll paper PR. 
     As an example, in a state where a recording process and a cutting process for the roll paper PR in the +X direction is completed, and when the recording process and the cutting process are performed for the roll paper PR in the −X direction, the control unit  26  temporarily stops the cutter unit  41  after performing the cutting process while moving from the standby position to an outside in the −X direction, without returning to the standby position. Then, the control unit  26  causes the cutter unit  41  to move in the +X direction and to perform the cutting process in accordance with the next planned cut position M. 
     Next, actions of the printer  80  of Exemplary Embodiment 2 will be described. 
     According to the printer  80 , the cutter unit  41  is capable of cutting the roll paper PR in both a forward path and a return path in the X direction. Here, when one roll paper PR is continuously cut, the cutter unit  41  is not returned to the standby position between the two pieces of roll paper PR, even when the cutter unit  41  is positioned on an outside in the X direction with respect to the roll paper PR. This eliminates the need for a wait time to return a position of the cutter unit  41 , and thus a time required for cutting the roll paper PR can be prevented from extending. 
     The printers  10  and  80  according to Exemplary Embodiments 1 and 2 of the present disclosure are based on the configuration described above. However, as a matter of course, modifications, omission, combinations, and the like may be made to a partial configuration without departing from the gist of the disclosure of the present application. 
     In the printers  10  and  80 , the control unit  26  may set the standby position to only the second position. The control unit  26  may fix the second position regardless of a size of the roll paper PR, when the cutter unit  41  is at a position not in contact with the roll paper PR before the cutting process. The cutter unit  41  need not include the guide unit  72 . The control unit  26  may move the cutter unit  41  outside the transport region S, when at least a part of the cutter unit  41  is positioned inside the transport region S. 
     The recording unit  18  may be a serial recording head or a line head. 
     In the printers  10  and  80 , in the configuration in which the two pieces of roll papers are wound, pieces of the roll paper PR may be set to be shifted in a girder direction at each of an upper stage and a lower stage, or two pieces of the roll paper PR each having a narrow width may be set at the upper stage. Additionally, a piece of the roll paper PR having a large width may be set on the upper stage, and two pieces of the roll paper PR each having a small width may be set at the lower stage.