JP5534732B2 - Stacker - Google Patents

Description

  The present invention relates to a stacker that stacks paper pieces such as tags that are sequentially printed and issued from a printer.

2. Description of the Related Art Printers that print predetermined information on a roll of continuous label paper are known. There are various connected devices for accumulating a large amount of labels issued by this printer. For example, there are a stacker that stacks stacked label pieces that are cut into a single sheet by a printer cutter, and a winder that winds a continuous label discharged from the printer in a roll. The stacker and winder are used according to the purpose of the label, and the stacker and winder are connected to the printer with a connection cable to connect the stacker and printer or the winder and printer. The control signal can be received. For example, operations such as driving the stacker conveying means in accordance with label issuance, or stopping the label winding means in the winder in accordance with the issuance of stoppage can be linked. Although it is used in the form of either a stacker and a printer or a winder and a printer, there is a problem that installation and removal work of devices connected to the printer is complicated depending on the application.
Therefore, a configuration is known in which a stacker is connected to the printer, and a winder is further connected to the stacker (see, for example, Patent Document 1).

JP 2003-192209 A

When the printer, stacker, and winder are connected in this order, if the stacker members interfere with the paper that is transported toward the winder by the stacker through which the paper passes, the paper transport becomes unstable and skewed. Lines and the like may occur, leading to poor winding and paper jams.
The present invention has been considered in view of the above problems. When a stacker is connected to a printer and the stacker is used, and a winder is further connected via a stacker connected to the printer. In this case, an object is to provide a stacker that can be changed to a suitable setting without being conscious of which device is used.

The present invention is a stacker to which a winder can be connected and which sequentially stacks paper pieces discharged from a printer, and a bottom surface portion for stacking paper pieces and a paper piece discharged from a printer to the bottom surface portion. A transport unit that transports the paper toward the bottom, a paper stopper that is detachably provided on the bottom surface part, and that contacts the front end in the transport direction of the paper piece, and that can move to a contact or separation position with respect to the transport unit. A sheet pressing roller that holds and conveys a sheet piece discharged from the printer at a position; and a contact / separation mechanism that moves the sheet pressing roller to a contact position or a separation position when the sheet stopper is attached or detached. And
Further, the paper pressing roller is characterized in that the paper stopper is located in a contact position with the bottom surface portion in a mounted state, and the paper stopper is in a separated position in a non-mounted state.
In addition, the paper stopper has a protruding piece provided on the mounting surface to the bottom surface portion, provided on the bottom surface portion, and has a stopper guide groove that slidably guides in a state where the protruding piece is inserted, The contact / separation mechanism is provided immediately below the stopper guide groove, and the sheet pressing roller is moved to the contact position by being pushed down by the protruding piece in a mounted state.
Further, the contact / separation mechanism is provided immediately below the stopper guide groove, and is capable of being moved by the paper stopper being pushed down by the projecting piece in a mounted state, and one end portion is below the push-down piece. An interlocking member that is swingable about the swinging shaft, one end portion is located above the other end portion of the interlocking member, and the other end portion is disposed toward the end portion of the sheet pressing roller. A swinging member that can swing about a moving shaft, and a first attachment that is provided across the other end of the swinging member and the end of the sheet pressing roller and biases the sheet pressing roller in a downward direction. And a second urging unit that urges the sheet pressing roller in a direction in which the sheet pressing roller is pushed up.
The urging force of the first urging means is stronger than the urging force of the second urging means.

By simply removing the paper stopper from the stacker body with the stacker contact / separation mechanism of the present invention, the paper pressing roller can be moved to a position away from the transport unit, so the winder is connected to the stacker connected to the printer. In this case, the operator does not need to be aware of the change of the stacker setting (the position of the sheet pressing roller), and the operability is improved.
In addition, the paper pressing roller can be moved to a position where it abuts against the transport section simply by attaching the paper stopper to the stacker body using the contact / separation mechanism, and the operator can set the stacker (when using the stacker connected to the printer) There is no need to be aware of changes in the position of the paper pressing roller, and the operability is excellent.

1 is a schematic side view of a stacker and a printer connected to the stacker of the present invention. It is a schematic perspective view of a stacker. It is a schematic perspective view of the conveyance part provided in the bottom face part of a stacker. 3 is a front view of a paper stopper 22. FIG. It is a schematic side view of the state which connected the winder to the stacker to which the printer was connected. It is a schematic perspective view of the contact-and-separation mechanism provided in the bottom part of the stacker. It is a schematic back view of the bottom face part for demonstrating the contact / separation operation | movement in a contact / separation mechanism. It is a schematic side view of the bottom face part for demonstrating the contact / separation operation | movement in a contact / separation mechanism.

FIG. 1 is a schematic side view of a stacker and a printer connected to the stacker according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view of the stacker.
As shown in FIG. 1, the stacker 20 is connected to the discharge port 7 on the downstream side in the paper transport direction of the printer in order to stack the paper pieces 62 discharged from the printer 1.

First, the printer 1 mainly includes a supply unit 2 that rotatably supports a roll paper 60 obtained by winding a long continuous paper 61 into a roll shape, and a sensor that detects the position of the continuous paper 61 drawn from the roll paper 60. 3 and the printing unit 4 for printing and conveying the continuous paper 61;
Ink ribbon unit 5 that supplies ink ribbon 64 to printing unit 4 and winds up, cutting unit 6 that cuts long continuous paper 61 into single-sheet sheet 62, and a piece of paper that has been cut by cutting unit 6 A discharge port 7 for discharging 62 is provided. The continuous paper 61 is transported from the upstream side in the transport direction where the supply unit 2 of the printer 1 is disposed toward the downstream side in the transport direction where the cutting unit 6 is disposed, and the sheet piece 62 cut by the cutting unit 6 is a discharge port. 7 is discharged.

The supply unit 2 includes a paper supply shaft (not shown) that holds the roll paper 60, and rotatably supports the roll paper 60.
The sensor 3 is a light reflection type sensor, and includes a light emitting unit that emits light toward the continuous paper 61 and a light receiving unit that receives the light emitted from the light emitting unit. The continuous paper 61 is provided with position detection marks (not shown) printed at regular intervals in the longitudinal direction. The position detection marks are detected by the sensor 3 to detect the position of the continuous paper 61. Yes.
Further, instead of the position detection mark, a hole may be formed in the continuous paper 61, and a light transmission type sensor in which a light emitting part and a light receiving part are respectively arranged at opposing positions sandwiching the hole may be used.

  The printing unit 4 is arranged so as to face the thermal head 8 by applying heat to the ink ribbon 64 to transfer the ink to the continuous paper 61, and is rotated by being connected to a motor (not shown). Accordingly, the platen roller 9 for conveying the continuous paper 61 toward the stacker 20 is provided.

  The ink ribbon unit 5 includes a ribbon supply unit 10 and a ribbon winding unit 11, and holds the ink ribbon 64 wound in a roll shape from the ribbon supply unit 10 to the ribbon winding unit 11 via the thermal head 8. Then, the ribbon take-up unit 11 connected to a motor (not shown) is driven to rotate, whereby the ink ribbon 64 after ink transfer is taken up on the ribbon take-up unit 11.

  The cutting unit 6 is a cutter that includes a fixed blade 12 and a movable blade 13 that can move in the advancing and retracting direction with respect to the fixed blade 12, and cuts the continuous paper 61 into single-sheet paper pieces 62.

  The printer 1 also includes a control unit (not shown). The control unit operates according to a ROM that stores a predetermined control program, a control program stored in the ROM, and a CPU that controls each unit, and the CPU operates. RAM for storing various data necessary for the above, a conveyance control unit for controlling the conveyance of the continuous paper 61 by the platen roller 9 by supplying a pulse signal to the motor, and characters and figures to be printed supplied from the CPU The control signal corresponding to the print data is generated and supplied to the thermal head 8 to perform the printing operation, and the light emitting unit of the sensor 3 is controlled under the control of the CPU, and the light is directed toward the continuous paper 61. A detection unit that receives an electrical signal output from the light receiving unit, converts it into digital data and supplies it to the CPU, and a calendar that measures the current date and time. A flash ROM for storing and Dialog IC, and various setting information of the printer 1 has an interface for receiving print data from a host computer, a.

  Next, the configuration of the stacker will be described with reference to FIG. The stacker 20 mainly includes a stacker body 21 and a paper stopper 22. The stacker main body 21 includes a bottom surface portion 23 on which the sheet pieces 62 are stacked, and a side surface portion 24 that is provided on one side portion of the bottom surface portion 23 and guides one side edge of the sheet pieces 62 in contact with each other. The bottom surface portion 23 has a stacking surface 25 on which the sheet pieces 62 are stacked. The stacking surface 25 is inclined on the downstream side in the transport direction lower than the upstream side, and is transported from the upstream toward the downstream. Further, the stacking surface 25 includes a transport unit 26, a motor (not shown) that drives the transport unit 26, and a contact / separation mechanism 28 (see FIG. 6) that moves the paper pressing roller 27. A direction in which the sheet piece 62 or the continuous sheet 63 is conveyed is referred to as a conveying direction, and a direction orthogonal to the conveying direction is referred to as a width direction.

  FIG. 3 is a schematic perspective view of the transport unit 26 provided inside the bottom surface part 23, and shows a state where the cover of the bottom surface part 23 is removed. The transport unit 26 is located upstream in the transport direction and pulls in the sheet 62 discharged from the printer 1 toward the stacking surface 25, the transport roller 30 positioned downstream in the transport direction, and the pull-in roller 29. In addition, an endless conveyance belt 31 is provided around the conveyance roller 30. A plurality of transport units 26 are provided in the width direction of the bottom surface unit 23, and can handle paper pieces 62 having different widths. The upper surface of the conveyor belt 31 is exposed above the stacking surface 25 from a belt exposing groove 32 formed on the stacking surface 25, and the sheet stopper 22 is placed with the sheet piece 62 placed on the exposed conveyor belt 25. The sheet pieces 62 are transported and stacked toward the downstream side in the transport direction in which is provided. Further, a stopper guide groove 42 that is connected to the belt exposing groove 32 and extends downstream in the conveying direction is provided, and a later-described protrusion 38 provided on the bottom surface of the paper stopper 22 can slide along the stopper guide groove 42. It is said.

  Further, as shown in FIG. 2, a stopper engaging portion 33 is provided on the bottom surface portion 23 so as to protrude upward from the stacking surface 25. The stopper engaging portion 33 is provided in parallel to the conveying belt 31 on the opposite side of the conveying belt 31 from the side surface portion 24, and has an uneven portion 34 on the surface thereof. The paper stopper 22 can be fixed to the stacking surface 25 at an arbitrary position by engaging an engagement clip 37 of the paper stopper 22 described later with the uneven portion 34.

  FIG. 4 is a front view of the paper stopper 22, and the paper stopper 22 includes a stopper main body 35, a width guide piece 36, and an engagement clip 37. The stopper body 35 is provided so that its flat surface can be fixed at a position facing the conveyance direction of the sheet piece 62, and the leading end of the sheet piece 62 conveyed by the conveyance belt 31 is brought into contact with the stopper main body 35. It serves as a stopper that supports the sheet pieces 62 loaded in large quantities so as not to fall in the transport direction. On the lower surface of the paper stopper 22 (the surface facing the stacking surface 25), a protruding piece 38 protruding from the lower surface is provided, and the protruding piece 38 is engaged with the stopper guide groove 42 on the upstream side and the downstream side in the transport direction. The paper stopper 22 can be moved, and the position can be adjusted according to the length of the paper piece 62. After the position of the paper stopper 22 is adjusted, the paper stopper 22 is fixed at an arbitrary position on the stacking surface 25 by sandwiching the stopper engaging portion 33 with the engaging clip 37. Further, the pressing member 71 (see FIG. 6), which will be described later, is pushed down by the projecting piece 38 to actuate the contact / separation mechanism 28 so that the sheet pressing roller 27 can be moved to a position where it comes into contact with the transport belt 31. .

  The width guide piece 36 is positioned in the width direction of the paper piece 62 by engaging with a width guide engaging portion 39 formed on a flat surface with which the front end of the paper piece 62 of the stopper main body 35 abuts. It is possible to fix the positioning by hooking on the upper end of 35. The width guide piece 36 can be stacked on the stacking surface 25 in an aligned state by restricting one end in the width direction of the sheet pieces 62 stacked on the stacking surface 25, and by adjusting the position with respect to the stopper main body 35. It is also possible to handle paper pieces 62 having different widths.

  As shown in FIG. 2, the side surface 24 is provided with a long hole 40 formed in a direction perpendicular to the stacking surface 25 and a sheet upper surface pressing member 41 movable within the long hole 40. The sheet upper surface pressing member 41 presses the surface (upper surface) of the sheet pieces 62 stacked on the stacking surface 25 and corrects the warpage of the sheet pieces 62 so that the stacked sheet pieces 62 do not fall down. Further, a weight (not shown) is connected to the inner side of the side surface portion of the sheet upper surface pressing member 41, and the surface of the sheet piece 62 is pressed toward the stacking surface 25 by the weight of the weight. Further, the side surface portion 24 is provided with a first shaft hole 15 that supports one end side of the shaft of the sheet pressing roller 27 and is parallel to the long hole 40, and the inside of the first shaft hole 15 has the first shaft hole 15. The shaft is movably provided. In addition, a second shaft hole 17 (not shown) is provided in the support member 16 that supports the other end side of the sheet pressing roller 27 provided at a position facing the first shaft hole 15. In other words, the sheet pressing roller 27 is movable along the first shaft hole 16 and the second shaft hole 17 in the vertical direction (contact / separation with respect to the pulling roller 29) while being parallel to the pulling roller 29. Yes.

FIG. 5 is a schematic side view of a state in which a winder is further connected to the stacker (downstream in the conveying direction) of FIG. 1, and the winder 50 winds the continuous paper 61 into a roll shape. A shaft 51 is provided. The difference from the case where only the stacker 20 is connected to the printer 1 is that the cutting operation of the cutting unit 6 of the printer 1 is set to be inactive, and the sheet upper surface pressing member 41 is removed with the sheet stopper 22 of the stacker 20 removed. The point is that the sheet pressing roller 27 is separated from the drawing roller 29 without pressing the surface of the continuous sheet 61. The paper take-up shaft 51 is connected to a motor (not shown). The paper take-up shaft 51 is rotated by this motor, and the continuous paper 61 printed by the printing unit 4 is taken up in a roll shape.
When the winder 50 is used in this way, it is necessary to remove the paper stopper 22 in the stacker 20 and separate it from the paper pressing roller 27 pull-in roller 29. The paper pressing roller 27 is changed depending on whether or not the paper stopper 22 is attached. A contact / separation mechanism 28 for contacting or separating from the drawing roller 29 is provided.

FIG. 6 is a schematic perspective view of the contact / separation mechanism 28 provided inside the bottom surface portion 23 of the stacker 20, and FIG. 7 (a) is a diagram showing the sheet by the contact / separation mechanism when the winder is connected as shown in FIG. FIG. 7B is an explanatory view showing a separation state in which the presser roller 27 is separated from the drawing roller 29, and FIG. 7B is a diagram showing contact and separation when using as a stacker without connecting a winder as shown in FIG. FIG. 8A is an explanatory view showing a contact state in which the sheet pressing roller 27 is in contact with the drawing roller 29 by the mechanism, and FIG. 8A illustrates the operation of the contact / separation mechanism in the separated state of FIG. FIG. 8B is a schematic side view for explaining the operation of the contact / separation mechanism in the contact state in FIG. 7B. It should be noted that the drawing is shown in a state where predetermined members are omitted in consideration of the visibility of the drawings.
As shown in FIG. 6, the contact / separation mechanism 28 includes a pressing member 71, a pair of interlocking members 72, a pair of swinging members 73, a pair of springs 74 as first biasing means, and a second A pair of leaf springs 75 (see FIG. 8) are provided as biasing means.
As shown in FIG. 7, the push-down member 71 is supported by the guide member 76 (see FIG. 6) in an upright state just below the stopper guide groove 42 at the center position. The guide member 76 is fixed to the bottom portion 21a of the stacker main body 21, and is held in a state in which the push-down member 71 can move up and down (slid with respect to the guide member 76) in an upright state.
The upper end side of the push-down member 71 is formed as a contact piece 77 with which the protruding piece 38 of the paper stopper 22 comes into contact, and is pushed down along the guide member 76 by the contact piece 77 being pressed down by the protruding piece 38. The member 71 is configured to be movable downward (bottom side of the stacker body). Further, a pressing piece 78 for pressing down the one end 72 a side of the interlocking member 72 is provided on the lower end side of the pressing member 71. As shown in FIG. 6, the pressing pieces 78 are provided so as to extend symmetrically toward both sides in the width direction of the bottom portion 21 a (longitudinal direction of the sheet pressing roller 27).

Two interlocking members 72 are arranged at symmetrical positions around the push-down member 71 so that the one end 72a is positioned below the push-down piece 78 extending on both sides in the width direction, and are arranged on the bottom portion 21a of the stacker body 21. Two interlocking members 72 are swingably provided by one operation of the push-down member 71 with the swinging shaft 80 of the planted support member 79 as a fulcrum. Further, the swing shaft 80 is disposed at a position close to the pressing member 71 side from the longitudinal center of the interlocking member 72, and the interlocking member 72 is subjected to some external force on the interlocking member 72 as shown in FIG. In an initial state, a state in which the one end portion 72a is on the upper side and the other end portion 72b side is on the lower side is provided. When the one end portion 72a of the interlocking member 72 is pushed down by the pressing piece 78 from this initial state (an external force toward the bottom side is applied), the interlocking member is used with the swing shaft 80 as a fulcrum as shown in FIG. One end 72 a of 72 is pushed down, and the other end 72 b on the side away from the push-down member 71 is pushed up. That is, one end 72a of the interlocking member 72 acts as a power point, the swing shaft 80 of the support member acts as a fulcrum, and the other end 72b of the interlocking member 72 acts as an action point.
The swing member 73, the spring 74, and the leaf spring 75 are also arranged in a pair at symmetrical positions with the pressing member 71 as the center.

The swing member 73 is arranged at a position where one end portion 73a is opposed to the upper side of the other end portion 72b of the interlocking member 72, and the other end portion 73b is disposed toward the end portion of the sheet pressing roller 27. Two swing members 73 are provided. The swing member 73 is supported at the center by swing shafts 81 fixed to both side surfaces of the stacker body 21 and is configured to be swingable. The other end 73b is provided with a fixing member 82 for fixing the spring 74 as the first urging means. One end of the spring 74 is at the fixing member 82, and the other end is at both ends of the sheet pressing roller 27. Each of the shafts is fixed to the shaft, and a pressing force is applied to both ends of the sheet pressing roller 27. Further, as shown in FIGS. 3 and 8, plate springs 75 as second urging means are provided at both ends of the shaft of the sheet pressing roller 27 with one end fixed to the stacker body 21, and this plate On the open end side of the spring 75, a force that constantly pushes up the paper pressing roller 27 is applied. Further, the force by which the plate spring 75 pushes up the paper pressing roller 27 upward is adjusted to be weaker than the pulling force by the spring 74. That is, as shown in FIGS. 7B and 8B, when the other end portion 73b of the swinging member 73 is pushed downward and a tensile force by the spring 74 is applied to the sheet pressing roller 27, the leaf spring 75 The paper pressing roller 27 is pushed downward by a pulling force that exceeds the lifting force, and the paper pressing roller 27 comes into contact with the conveying belt 31 at the position of the drawing roller 29.
Also, as shown in FIGS. 7A and 8A, the leaf spring 75 when the one end portion 73 a of the swinging member 73 is pushed upward and the tensile force by the spring 74 is not applied to the sheet pressing roller 27. The sheet pressing roller 27 is pushed upward by the pushing-up force, and the sheet pressing roller 27 is separated from the conveying belt 31 at the drawing roller 29 position.

The contact / separation operation of the contact / separation mechanism configured as described above will be described with reference to FIGS.
First, the operation of the contact / separation mechanism 28 in the usage mode in a state where the stacker 20 is connected to the printer 1 as shown in FIG. 1 will be described with reference to FIGS. 7B and 8B.
As shown in FIG. 8B, in the mounted state in which the paper stopper 22 is mounted, the push-down member 71 is pushed down toward the bottom 21a by the protruding piece 38 (see FIG. 4) provided on the bottom surface of the paper stopper 22. .

  Next, one end portion 72a of the pair of interlocking members 72 is pressed toward the bottom portion 21a by the pressing piece 78 of the pressing member 71, and the other end of the interlocking member 72 is connected via the swing shaft 80 in accordance with the pressing operation. The part 72b is pushed up in the direction away from the bottom part 21a.

  As the other end 72b of the interlocking member 72 is pushed up, the other end 72b pushes up the one end 73a of the swinging member 73 away from the bottom 21a as shown in FIG. Along with the push-up operation, the other end portion 73b of the swing member 73 is pushed down through the swing shaft 81 in a direction approaching the bottom portion 21a.

  When the other end portion 73 b of the swing member 73 is pushed down, the sheet pressing roller 27 is pushed down in the direction approaching the bottom portion 21 a via the fixed portion and the spring 74. At this time, the downward pulling force (pressing force) of the spring 74 approaching the bottom portion 21a exceeds the pushing force of the leaf spring 75 that applies the upward pushing force away from the bottom portion 21a to the paper pressing roller 27. Therefore, as shown in FIG. 8B, the sheet pressing roller 27 comes into contact with the conveying belt 31 with the leaf spring 75 bent. In such a contact state, the sheet piece 62 discharged from the printer 1 is nipped and conveyed by the sheet pressing roller 27 and the conveyance belt 31, and the sheet piece 62 is stacked toward the bottom surface portion 23.

Next, the operation of the contact / separation mechanism in the usage mode in a state where the winder 50 is connected to the stacker 20 connected to the printer 1 as shown in FIG. 5 will be described based on FIGS. 7 (a) and 8 (a). .
As shown in FIG. 5, when the winder 50 is connected to the stacker 20, the paper stopper 22 becomes an obstacle in the transport path from the continuous paper 61 discharged from the discharge port 7 of the printer 1 to the paper take-up shaft 51. 7 (a) and 8 (a) show the separated state of the contact / separation mechanism 28 with the paper stopper 22 removed.

  First, when the paper stopper 22 is removed from the stacker body 21, the pressing force on the pressing member 71 by the protruding piece 38 is not applied, and accordingly, the pressing force of the pressing piece 78 on the one end portion 72 a of the interlocking member 72 is not applied. As shown in FIG. 7A, the interlocking member 72 is inclined so that no external force is applied to the interlocking member 72 so that the one end 72a is on the upper side away from the bottom 21a and the other end 72b is on the lower side approaching the bottom 21a. It becomes such an initial state.

  When the other end 72b is inclined downward, as shown in FIG. 8A, one end 73a of the swinging member 73 is on the lower side and the other end 73b is on the upper side via the swinging shaft 81. It will be in a slanted state. Along with this, the push-up force to the tip end portion 73a of the swinging member 73 by the other end portion 72b of the interlocking member 72 does not act, and the other end portion 73b moves upward so that the pulling force of the spring 74 causes the sheet press roller. 27 no longer works. When the tension force of the spring 74 does not act on the paper pressing roller 27, the lifting force of the plate spring 75 acts on the paper pressing roller 27, and the paper pressing roller 27 is moved upward by the plate spring 75 as shown in FIG. The sheet pressing roller 27 is separated from the conveying belt 31 at the position of the drawing roller 29.

  In this separated state, the continuous paper 61 is inserted into the gap between the conveyance belt 31 at the position of the paper pressing roller 27 and the drawing roller 29, and the setting operation is completed by winding the vicinity of the leading end of the continuous paper 61 around the paper take-up shaft 51.

As described above, in the embodiment of the present invention, the sheet pressing roller can be moved to a position away from the transport unit simply by removing the sheet stopper from the stacker body by the contact / separation mechanism, so the winder is attached to the stacker connected to the printer. When connected and used, the operator does not need to be aware of changes in the stacker setting (paper presser roller position), and the operability is improved.
In addition, the paper pressing roller can be moved to a position where it abuts against the transport section simply by attaching the paper stopper to the stacker body using the contact / separation mechanism, and the operator can set the stacker (when using the stacker connected to the printer) There is no need to be aware of changes in the position of the paper pressing roller, and the operability is excellent.

DESCRIPTION OF SYMBOLS 1 Printer 2 Supply part 3 Sensor 4 Printing part 5 Ink ribbon unit 6 Cutting part 7 Discharge port 8 Thermal head 9 Platen roller 10 Ribbon supply part 11 Ribbon take-up part 12 Fixed blade 13 Movable blade 20 Stacker 21 Stacker main body 12a bottom part 22 Paper Stopper 23 Bottom surface 24 Side surface 25 Loading surface 26 Conveying portion 27 Paper pressing roller 28 Contacting / separating mechanism 29 Pull-in roller 30 Conveying roller 31 Conveying belt 32 Belt exposing groove 33 Stopper engaging portion 34 Concavity and convexity portion 35 Stopper main body 36 Width guide piece 37 Engagement clip 38 Projection piece 39 Width guide engagement part 40 Long hole 41 Paper upper surface pressing member 42 Stopper guide groove 50 Winder 51 Paper winding shaft 60 Roll paper 61 Continuous paper 62 Paper piece 64 Ink ribbon 71 Press-down member 72 Interlocking member 72a One end 72b The other end 73 Member 73a one end 73b other end 74 the spring (first biasing means)
75 leaf spring (second biasing means)
76 Guide member 77 Contacting piece 78 Pressing piece 79 Supporting member 80 Oscillating shaft 81 Oscillating shaft 82 Fixed member

Claims (5)

A stacker that can be connected to a winder and that sequentially stacks pieces of paper discharged from the printer,
A bottom surface for stacking paper pieces;
A transport unit that transports a piece of paper discharged from the printer toward the bottom surface;
A paper stopper that is detachably provided on the bottom surface portion and abuts against a front end of the paper piece in the transport direction;
A sheet presser roller that can move to a contact position or a separation position with respect to the transport unit, and sandwich and transport a sheet piece discharged from the printer at the contact position;
A contact / separation mechanism that moves the paper pressing roller to a contact position or a separation position in accordance with the attachment / detachment of the paper stopper;
A stacker characterized by comprising:   2. The stacker according to claim 1, wherein the sheet pressing roller is positioned at a contact position with the bottom surface portion in a state where the sheet stopper is mounted, and is positioned at a separation position when the sheet stopper is not mounted. The paper stopper has a protruding piece provided on the mounting surface to the bottom surface,
A stopper guide groove which is provided on the bottom surface part and slidably guides in a state where the protruding piece is inserted;
3. The contact mechanism according to claim 1, wherein the contact / separation mechanism is provided directly below the stopper guide groove, and the sheet pressing roller is moved to the contact position by being pushed down by the protruding piece in a mounted state. The stacker described. The contacting / separating mechanism is
A pressing piece that is provided directly below the stopper guide groove and is movable by being pushed down by the protruding piece in a mounted state; and
An interlocking member whose one end is located below the pressing piece and is capable of swinging around the swing shaft;
An oscillating member having one end located above the other end of the interlocking member, the other end being disposed toward the end of the sheet pressing roller, and capable of oscillating about an oscillating shaft;
A first urging means provided across the other end of the swing member and the end of the paper pressing roller, and urges the paper pressing roller in a direction of pressing down;
A second urging means for urging the sheet pressing roller in a direction to push up;
The stacker according to claim 1, comprising:   The stacker according to claim 4, wherein the urging force of the first urging means is stronger than the urging force of the second urging means.

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