JP2006150860A - Printing paper take-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing paper take-up device capable of detecting loading according to a change of a take-up path accompanying reciprocating movement of a tension roller provided conventionally, that is, accompanying printing paper winding operation. To do.
SOLUTION: The movable region of the tension roller is divided into four so that the position or posture of the tension roller can be sequentially grasped, and the reciprocating motion itself such as the rising and lowering of the tension roller is monitored, thereby Focusing on the fact that the presence or absence or the set state can be confirmed, the winding control unit for judging the tension region where the tension roller is located by the output signals from the first sensor and the second sensor When it is detected that the roller is reciprocating between the first tension region and the fourth tension region within a predetermined set time, the printing paper is properly loaded in the printing paper take-up device. It is characterized by judging.
[Selection] Figure 6

Description

The present invention relates to a printing paper take-up device, and more particularly to a printing paper take-up device provided independently of a printer that performs printing on printing paper.

As a conventional printing paper take-up device, it is configured as an external device separate from the printer, and is placed in front of the paper discharge port of the printer, and the continuous paper or printing paper issued by the printer Some rolls are rolled up in a roll (including the backing from which the label is peeled).
Such a printing paper winding device includes a winding shaft for winding a belt-shaped printing paper that has been printed by a printer, a drive unit (for example, a drive motor) that rotationally drives the winding shaft, and the winding shaft. A tension roller that abuts on the printing paper on the upstream side.
The tension roller reciprocates in a predetermined tension area while touching the printing paper as the printing paper is discharged and taken up, so that the tension can be applied to the printing paper so as to absorb the deflection of the printing paper. The winding strength around the shaft can be stabilized.

In such a printing paper take-up device, the belt-shaped printing paper discharged from the printer is usually fixed with the leading end fixed to the take-up shaft, and the tension roller is set in contact with the printing paper, and then the drive unit is started. However, even if the printing paper is being wound, it continues to detect whether or not the printing paper is properly loaded in the printing paper winding device. In general, it is conceivable to provide an optical sensor or the like capable of detecting the printing paper in the winding path of the printing paper.
However, providing an optical sensor or the like leads to an increase in the number of parts and an increase in cost, and it is desired to avoid the adoption for a simpler configuration.

    The conventional printing paper winding device is controlled integrally with the printer by the printer control unit, and is practically impossible to drive except for a specific printer, and appropriately rolls printing paper discharged from any printer. There is a problem that the combination with the printer is not flexible.

JP 2003-252501 A

    The present invention has been made in view of the above problems, and an object of the present invention is to provide a printing paper take-up device capable of detecting the presence or absence or setting state of a belt-like printing paper by a simple method.

    Another object of the present invention is to provide a printing paper take-up device capable of confirming loading of printing paper based on a reciprocating operation of a tension roller provided conventionally.

    Another object of the present invention is to provide a printing paper take-up device that makes it possible to confirm the setting of the printing paper in accordance with the change in the take-up path as the tension roller moves up and down in the tension region.

    Another object of the present invention is to provide a printing paper take-up device capable of detecting the loading of the printing paper accompanying the winding operation of the printing paper.

    The present invention also provides a printing paper take-up device that can be controlled independently even if it is arranged independently from a printer or the like and can take up printing paper that is discharged from an arbitrary printer. This is the issue.

    That is, the present invention divides the movable area of the tension roller into four parts so that the position or posture of the tension roller can be sequentially grasped, and the reciprocating motion itself such as raising and lowering of the tension roller is monitored, thereby printing paper. The winding shaft for winding the belt-shaped printing paper that has been printed by the printer, the drive unit that rotationally drives the winding shaft, and the winding A tension roller that abuts against the printing paper on the upstream side of the take-up shaft and reciprocates in a predetermined tension area along with the winding of the printing paper to apply tension to the printing paper. A first sensor capable of detecting in which part of the tension area the tension roller is located. The web and the second sensor, and the output signals from the first sensor and the second sensor, the tension region where the tension roller is located is continuously adjacent to each other. It is determined whether the take-up path is the first tension area, the second tension area, the third tension area, or the fourth tension area where the print paper take-up path is the minimum length. A winding control unit, and the winding control unit is configured such that the tension roller reciprocates between the first tension region and the fourth tension region within a predetermined set time. When this is detected, it is determined that the printing paper is properly loaded in the printing paper winding device.

The winding control unit detects that the tension roller has reached the fourth tension region as the printing paper is wound around the winding shaft, and then performs the printing by the winding shaft. After stopping the paper winding operation and detecting that the tension roller has reached the first tension region as the printing paper is supplied from the printer, the printing paper is wound on the printing paper. It can be determined that the paper is properly loaded in the take-up device, and control can be performed so as to restart the winding operation of the printing paper by the winding shaft.
That is, it is determined that the printing paper is properly set by detecting that the tension roller starts from the first tension area, reaches the fourth tension area, and returns to the first tension area. Can do.

The winding control unit detects that the tension roller has reached the first tension area as the printing paper is supplied from the printer, and then the winding paper is fed to the winding shaft. After winding is started and it is detected that the tension roller has reached the fourth tension region, the winding operation of the printing paper by the winding shaft is stopped, and the printing paper is taken up by the printing paper. It can be determined that the printer is properly loaded, and control can be made to wait for the printing paper to be supplied from the printer.
That is, it is determined that the printing paper is properly set by detecting that the tension roller starts from the fourth tension area, reaches the first tension area, and returns to the fourth tension area. Can do.

    A roller arm that holds the tension roller, a roller rotation shaft that rotatably supports the roller arm, and enables the tension roller to reciprocate in both forward and reverse directions so as to intersect the winding path; and It is possible to provide a sensor plate which can be rotated around a roller rotation axis and which has detection convex portions and detection concave portions formed alternately by the first sensor and the second sensor.

    The winding control unit can control the printing paper winding device independently of the printer control unit of the printer that prints on the printing paper.

    In order to provide a margin for the reciprocation of the tension roller, the tension roller is reciprocated in the second tension region and the third tension region other than the first and fourth tension regions, that is, in the middle portion thereof. It is desirable to control as follows.

In the printing paper winding device according to the present invention, the movable region of the tension roller is divided into four, and the positions of the tension roller are the first tension region, the second tension region, the third tension region, and the fourth tension. It is possible to determine whether it is one of the areas, and to monitor the reciprocating motion itself such as the printing paper issuance from the printer and the tension roller is lowered and raised as the printing paper is taken up by the printing paper take-up device. This makes it possible to detect the setting state of printing paper, so that it can be rolled up while checking the presence or absence of printing paper by the conventional operation of raising and lowering the tension roller without providing a separate detector such as an optical sensor. The operation can be continued.

    In the present invention, it is assumed that the tension roller itself passes through the first tension region, the second tension region, the third tension region, and the fourth tension region as the loaded state of the printing paper. We realized a printing paper take-up device that can check the presence of printing paper without providing a special detector such as an optical sensor.

Next, a printing paper winding device 2 according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic side view of a printer 1 and a printing paper take-up device 2 connected to the printer 1. The printer 1 determines the position of a printing paper 3 supply unit 4 such as a label or a tag and the printing paper 3. A detecting unit 5 for detecting, a printing unit 6 for printing on the printing paper 3, a cutting unit 7 for winding the printed printing paper 3 around the printing paper winding device 2, and cutting a terminal portion thereof, and each of these units A printer control unit 8 for controlling the printer.

The printing unit 6 includes a thermal head 9 and a platen roller 10. The printing paper 3 is sandwiched between the thermal head 9 and the platen roller 10 and the printing paper 3 is rotated by the rotation of the platen roller 10. The paper is discharged in the direction and printed with predetermined information on the printing paper 3.
The cutting unit 7 may be driven by the printer control unit 8 to mechanically cut the printing paper 3, but a member for manually cutting the terminal end of the printing paper 3 may be provided.

    FIG. 2 is a perspective view of the printing paper winding device 2. The printing paper winding device 2 guides and introduces the apparatus main body 11 and the printed printing paper 3 into the printing paper winding device 2. FIG. Fixed guide roller 12, tension roller 13, second fixed guide roller 14 for guiding the printing paper 3 from the tension roller 13, a winding unit 15 for winding the printing paper 3 into a roll, and an operation unit 16. And a power switch 17 and a winding control unit 18.

A roller rotation shaft 19 is provided on the vertical wall surface portion 11A of the apparatus main body 11, a roller arm 20 is attached to the roller rotation shaft 19 so as to be able to rotate in both forward and reverse directions, and a tension roller 13 is rotatably attached to the tip portion thereof. The tension roller 13 is positioned so as to intersect perpendicularly with the winding path 21 of the printing paper 3 (for example, it appears in a zigzag shape in FIG. 1).
The tension roller 13 can reciprocate up and down in an arc shape as indicated by an arrow in FIG. 1 along the arcuate guide groove 22 formed in the vertical wall surface portion 11 </ b> A according to the winding state of the printing paper 3. The length of is changed from minimum to maximum.

FIG. 3 is a side view of the vertical wall surface portion 11A as viewed from the surface opposite to the surface on which the tension roller 13 is located. The position of the tension roller 13 is indicated by the sensor plate 23, the first sensor 24, and the second sensor. It can be detected by the sensor 25.
The sensor plate 23 is attached to the roller rotation shaft 19 so as to be rotatable around the roller rotation shaft 19 together with the tension roller 13, and the first sensor 24 and the second sensor 25 are provided on the circumferential portion thereof. Two detection convex portions (first detection convex portion 26, second detection convex portion 27) and three detection concave portions (first detection concave portion 28, second detection concave portion 29, third) Detection recesses 30) are alternately formed.

The first sensor 24 and the second sensor 25 can employ either a transmission type or a reflection type detector. The first detection convex portion 26, the second detection convex portion 27, and the first detection concave portion 28 are used. The second detection recess 29 and the third detection recess 30 are arranged on the circumference of a position where they can be detected.
In the lowest position (bottom dead center, first tension region) of the tension roller 13 indicated by a solid line in FIG. 3, the first sensor 24 faces the second detection recess 29, and the second sensor 25 is the third sensor. It faces the detection recess 30.

The roller rotation shaft 19 is preferably arranged vertically above the tension roller 13, and the relative arrangement makes the tension roller 13 positioned vertically downward in the arc-shaped guide groove 22 by its own weight. The posture to perform is a natural posture, and the tension roller 13 can always apply a predetermined tension to the printing paper 3 that contacts from above in FIGS. 1 and 2.
If necessary, the tension spring 13 (FIG. 1) can be attached to the roller arm 20 to constantly urge the tension roller 13 in the arcuate guide groove 22 in the lowermost (bottom dead center) direction. .

FIG. 4 is a chart showing tension regions where the tension roller 13 is determined based on detection signals from the first sensor 24 and the second sensor 25, and FIG. 5 is an explanatory diagram showing an outline of each tension region.
3 indicates the bottom dead center of the tension roller 13 (the lowest point in the first tension region R1), the first sensor 24 detects the position of the second detection recess 29, The second sensor 25 is detecting the position of the third detection recess 30.
As the tension roller 13 moves up in the arcuate guide groove 22, the first sensor 24 and the second sensor 25 have the first detection convex portion 26, the second detection convex portion 27, and the first detection concave portion. 28, the second detection concave portion 29 and the third detection concave portion 30 are detected, respectively, and from these detection signals, the winding control unit 18 causes the tension roller 13 to be in the tension region (the first adjacent to each other continuously). It is determined whether it is located in any one of the tension region R1, the second tension region R2, the third tension region R3, and the fourth tension region R4).
The first detection convex portion 26, the second detection convex portion 27, the first detection concave portion 28, the second detection concave portion 29, and the third detection concave portion 30 around the roller rotation shaft 19 of the sensor plate 23. By appropriately designing the respective circumferential angles and the relative positions of the first sensor 24 and the second sensor 25, the tension regions of the tension roller 13 (first tension region R1, second tension region R2). The detection timing of the third tension region R3 and the fourth tension region R4) can be adjusted.

    1 and 2, the winding unit 15 includes a driving motor 32 (driving unit), a winding shaft 33 that is rotationally driven by the driving motor 32, and a winding shaft that is detachably fitted to the winding shaft 33. 33, a rewind core 34 for winding the print paper 3 in a roll shape here, and a pair of plate-like paper guides 35 provided at both ends of the rewind core 34 to guide the print paper 3 Have.

The operation unit 16 is provided in a portion of the apparatus main body 11 in the vicinity of the winding unit 15. A status display unit 37 using LEDs or the like, and a winding direction display unit 38 that indicates the winding direction of the printing paper 3 with an arrow.
When the start / stop button 36 is pressed to perform the winding operation of the printing paper 3, the status display section 37 is lit, and when the winding is stopped, the status display section 37 blinks.
The winding direction display unit 38 displays the distinction between the reverse winding or the front winding of the printing paper 3. The printing paper 3 may be a continuous label or other tag paper that does not have a glue surface, but a plurality of label pieces 3B are temporarily attached on a strip-shaped mount 3A as illustrated in FIG. There is also a case of a label continuum. In the case of this label continuum, the case where the label piece 3B is wound as a roll on the winding shaft 33 (rewind core 34) on the inner side (back side) is wound on the outer side. The case of being wound around (front side) is called front winding.

    The power switch 17 is for turning on / off the power of the printing paper winding device 2. However, even when the power switch 17 is turned on, the drive motor 32 (drive unit) is not started, and the winding operation of the printing paper 3 is not started.

    The winding control unit 18 is based on the detection signals from the first sensor 24 and the second sensor 25, that is, based on which tension region R1, R2, R3, R4 the tension roller 13 is located. The take-up unit 15 and the operation unit 16 are driven and controlled, but the printing paper winding is not performed by the control signal from the printer control unit 8 (FIG. 1) in the printer 1, that is, independently of the printer control unit 8. The take-up device 2 is controlled.

    In the printing paper winding device 2 and the printer 1 having such a configuration, the printing paper winding device 2 is placed on the printer 1 in a posture, and the printing paper 3 discharged and extended from the printer 1 side is shown in FIG. 1 or FIG. In the state shown, the paper is wound around the first fixed guide roller 12, the tension roller 13 and the second fixed guide roller 14 of the printing paper winding device 2, and the leading end of the printing paper 3 is attached to the rewind core 34 of the winding shaft 33. The power switch 17 is turned on.

When the printing paper 3 is set in the winding path 21, when the entire printing paper 3 is slack and the tension roller 13 is at its lowest point (bottom dead center, first tension region R1), The winding control unit 18 confirms that the tension roller 13 is in the first tension region R1 at the start of winding the printing paper 3 around the winding shaft 33 (rewind core 34). In this state, the operator keeps pressing the start / stop button 36 and rotates the winding shaft 33 at a speed lower than the normal winding speed by the drive unit (drive motor 32) only while the signal is output. When the tension roller 13 reaches the fourth tension region R4 (more precisely, when the tension roller 13 reaches the boundary between the third tension region R3 and the fourth tension region R4), the winding shaft The winding of the printing paper 3 by 33 is temporarily stopped to set the initial setting state.
In addition, the normal winding speed in the printing paper winding device 2 is assumed to be faster than the transfer speed associated with the printing discharge of the printing paper 3 by the printer 1.
Furthermore, at the time of transition from the first tension region R1 to the second tension region R2 and the third tension region R3, the winding speed is increased so that the start-up operation and the winding operation can be performed quickly. Can do.

    Of course, depending on the initial setting operation by the operator, the tension roller 13 may be in a tension region other than the first tension region R1, but at this time as well, the winding control unit 18 is not While determining which tension region the roller 13 is in, and while the signal from the start / stop button 36 is being output, the winding shaft 33 is rotated at a lower speed than the normal winding speed, and the tension roller 13 When the ink reaches the fourth tension region R4, the winding of the printing paper 3 by the winding shaft 33 is temporarily stopped, and the initial setting state is set.

When the initial setting state is completed, the tension roller 13 is set in the fourth tension region R4. In this state, when the printer 1 is started and the printing paper 3 is discharged, the winding is performed. The direction of the second tension region R2 and the first tension region R1 from the fourth tension region R4 through the third tension region R3 while the tension roller 13 is in contact with the printing paper 3 with a predetermined tension in the path 21 And descends along the arcuate guide groove 22.
When the tension roller 13 is lowered and reaches the first tension region R1 (more precisely, when the boundary between the second tension region R2 and the first tension region R1 is reached), the winding is performed. The winding of the printing paper 3 by the take-up shaft 33 is resumed, and the tension roller 13 ascends along the arc-shaped guide groove 22 with this winding operation, and enters the second tension region R2 and the third tension region R3. Then, the winding reaches again the fourth tension region R4 and the winding is stopped. In this stopped state, the printer 1 waits for the printing paper 3 to be further discharged, and as the printing paper 3 is discharged, as described above, when the tension roller 13 reaches the first tension region R1. Rewinding is resumed.
By pushing the start / stop button 36 in the operation unit 16, the winding operation can be terminated.

    In the normal winding operation, the first tension region R1 and the fourth tension region 13 are controlled by controlling the tension roller 13 to reciprocate between the second tension region R2 and the third tension region R3. The tension region R4 can be secured as a margin region.

    Thus, the operator can perform the winding operation of the initial set of the printing paper 3 at a lower speed than the normal winding speed only by continuously pressing the start / stop button 36 in the operation unit 16. During the setting operation, the rotation of the printing paper 3 can be started only by one's own intention, and the winding operation can be performed safely and reliably.

FIG. 6 is a flowchart showing an example of detection control for three sets of printing paper according to the present invention.
First, in step S1, the initial setting of the printing paper 3 as described above is performed, and the winding control unit 18 determines whether or not the tension roller 13 has reached the first tension region R1 in step S2.
That is, between step S1 and step S2, the printer 1 issues printing of the printing paper 3 and continues to supply the printed printing paper 3 to the printing paper take-up device 2, so that it contacts the printing paper 3. The tension roller 13 is moved by its own weight or the urging force of the tension spring 31 from the fourth tension region R4 through the third tension region R3 and the second tension region R2 to the first tension region R1 (more precisely, Then, it is determined whether or not the boundary portion between the first tension region R1 and the second tension region R2 has been reached.
Here, if the first tension region R1 has not yet been reached, it is determined in step S3 whether or not a predetermined set time (decrease set time Tmaxd) has elapsed.
The lowering set time Tmaxd is a maximum time until the tension roller 13 reaches the first tension region R1 from the fourth tension region R4 by a normal print issuing operation by the printer 1, and has a predetermined margin as an error range. When the lowering set time Tmaxd elapses, the printing paper 3 is not sufficiently supplied, that is, the printing paper 3 is assumed to be in the printing paper 3 issuance stopped state. The winding device 2 maintains a standby state (step S4).

    After confirming that the first tension region R1 has been reached in step S2, the winding control unit 18 starts to drive the drive motor 32 and prints on the winding shaft 33 (rewind core 34) as in step S5. The paper 3 is taken up.

Along with the winding operation of the printing paper 3 by the drive motor 32, the tension roller 13 passes from the first tension region R1 through the second tension region R2 and the third tension region R3 to the fourth tension region R4 ( More precisely, it reaches the boundary between the third tension region R3 and the fourth tension region R4.
In step S6, it is determined whether or not the tension roller 13 has reached the fourth tension region R4.
If the fourth tension region R4 has not yet been reached, it is determined in step S7 whether a predetermined set time (rise set time Tmaxu) has elapsed.
The increase setting time Tmaxu is a time required for the tension roller 13 to reach from the first tension region R1 to the fourth tension region R4 in a normal winding operation, and a predetermined margin as an error range is added. Therefore, when the rising set time Tmaxu elapses, the tension roller 13 is positioned in the second tension region R2 or the third tension region R3 (that is, the printing paper 3 itself is not cut). In addition, although the drive motor 32 is in the on state, the tension roller 13 has not reached the fourth tension region R4, and at least one of the first sensor 24 and the second sensor 25 is present. One of them is determined to be abnormal, and winding is stopped as an error in step S8.

    When the fourth tension region R4 (more precisely, the boundary between the third tension region R3 and the fourth tension region R4) is reached in step S6, the winding of the winding shaft 33 is stopped ( In step S9), in step S10, as in step S2, it is determined whether the tension roller 13 has reached the first tension region R1, and in steps S11 and S12, the above-described steps S3 and S4 are performed. Similar determinations and processing are performed.

    If it is determined in step S10 that the tension roller 13 has reached the first tension region R1, the printing paper 3 that is in contact with the tension roller 13 as a result of the detection and determination from step S2 to step S10, together with the tension roller 13, It can be determined that the winding path 21 has been wound while moving from the first tension region R1 to the fourth tension region R4 and further from the fourth tension region R4 to the first tension region R1, It is determined that the printing paper 3 is properly loaded and set in the winding path 21 of the printing paper winding device 2 (step S13), and the process returns to step S5 to repeat the above-described processing (winding operation). become.

In the above-described detection control shown in FIG. 6, the tension roller 13 starts from the first tension region R1 (more precisely, the boundary between the first tension region R1 and the second tension region R2). Printing by detecting that it has reached the fourth tension region R4 (more precisely, the boundary between the third tension region R3 and the fourth tension region R4) and has returned to the first tension region R1 again. In the present invention, it is determined that the tension roller 13 starts from the fourth tension region R4, reaches the first tension region R1, and returns to the fourth tension region R4. By detecting it, it is also possible to determine the set of the printing paper 3.
That is, FIG. 7 is a flowchart showing an example of another detection control of three sets of printing paper according to the present invention.
As shown in FIG. 7, the flow up to step S9 (the stage where the tension roller 13 reaches the fourth tension region R4 and the winding is stopped) is the same as the flow of FIG. 6, and at this time, as step S9A, in FIG. As in step S13, it is determined that the printing paper 3 is properly loaded and set in the winding path 21 of the printing paper winding device 2, and the process proceeds to the next steps S10, S11, and S12.

Thus, by confirming the reciprocation of the tension roller 13 between the first tension region R1 and the fourth tension region R4 within a predetermined set time (Tmaxd and Tmaxu in the case of the description), that is, By utilizing a conventionally-provided component called a tension roller 13, the winding operation of the printing paper 3 can be continued while confirming the setting of the printing paper 3 on the printing paper winding device 2 with a simple configuration. Can do.

1 is a schematic side view of a printing paper winding device 2 and a printer 1 connected to the printing paper winding device 2 according to an embodiment of the present invention. 2 is a perspective view of the printing paper winding device 2. FIG. It is the side view seen from the surface on the opposite side to the surface where the tension roller 13 of 11 A of vertical wall surfaces is located. 3 is a chart showing a tension region where a tension roller 13 is determined based on detection signals from the first sensor 24 and the second sensor 25. It is explanatory drawing which shows the outline of each tension area | region similarly. FIG. 6 is a flowchart illustrating an example of detection control for three sets of printing paper according to the present invention. FIG. 6 is a flowchart showing another example of detection control for three sets of printing paper according to the present invention.

Explanation of symbols

1 Printer (Figure 1)
2 Printing paper take-up device (Example, FIGS. 1 and 2)
DESCRIPTION OF SYMBOLS 3 Printing paper 3A Mount of printing paper 3 3B Label piece of printing paper 3 4 Printing paper 3 supply part 5 Detection part 6 Printing part 7 Cutting part 8 Printer control part 9 Thermal head 10 Platen roller 11 Printing paper winding device 2 Main unit (Figure 2)
11A Vertical wall surface portion 12 of apparatus main body 11 First fixed guide roller 13 Tension roller 14 Second fixed guide roller 15 Winding portion 16 Operation portion 17 Power switch 18 Winding control portion 19 Roller rotating shaft 20 Roller arm 21 Printing Winding path 22 of paper 3 Arc-shaped guide groove 23 Sensor plate (FIG. 3)
24 first sensor 25 second sensor 26 first detection convex portion 27 second detection convex portion 28 first detection concave portion 29 second detection concave portion 30 third detection concave portion 31 tension spring (FIG. 1)
32 Drive motor (drive unit)
33 Winding shaft 34 Rewind core 35 Paper guide 36 Start / stop button (Fig. 2)
37 Status display section 38 Winding direction display section R1 First tension region (FIGS. 3 and 5)
R2 Second tension region (FIGS. 3 and 5)
R3 Third tension region (FIGS. 3 and 5)
R4 Fourth tension region (FIGS. 3 and 5)
Tmaxd falling setting time (predetermined setting time) (FIGS. 6 and 7)
Tmaxu rising set time (predetermined set time) (FIGS. 6 and 7)

Claims (5)

A take-up shaft for taking up the belt-shaped printing paper that has been printed by the printer;
A drive unit for rotationally driving the winding shaft;
A printing paper having a tension roller that comes into contact with the printing paper on the upstream side of the winding shaft and reciprocates in a predetermined tension region along with the winding of the printing paper to apply tension to the printing paper. A winding device,
A first sensor and a second sensor capable of detecting in which part of the tension region the tension roller is located;
Due to the output signals from the first sensor and the second sensor, the tension area where the tension roller is located is continuously adjacent to each other, and the winding path of the printing paper becomes the maximum length. A winding control unit that determines one of a first tension region, a second tension region, a third tension region, and a fourth tension region in which the winding path of the printing paper has a minimum length;
Have
The winding control unit
When it is detected that the tension roller is reciprocating between the first tension region and the fourth tension region within a predetermined set time,
It is determined that the printing paper is properly loaded in the printing paper winding device. The winding control unit
After detecting that the tension roller has reached the fourth tension area as the printing paper is wound around the winding shaft,
Stop the winding operation of the printing paper by the winding shaft,
After detecting that the tension roller has reached the first tension area as the printing paper is supplied from the printer,
Determining that the printing paper is properly loaded in the printing paper winding device;
2. The printing paper winding device according to claim 1, wherein the printing paper winding device is controlled to resume the winding operation of the printing paper by the winding shaft. The winding control unit
After detecting that the tension roller has reached the first tension area as the printing paper is supplied from the printer,
Start winding the printing paper onto the winding shaft,
After detecting that the tension roller has reached the fourth tension region,
Stop the winding operation of the printing paper by the winding shaft,
Determining that the printing paper is properly loaded in the printing paper winding device;
2. The printing paper take-up device according to claim 1, wherein control is performed so as to wait for the printing paper to be supplied from the printer. A roller arm for holding the tension roller;
A roller rotation shaft that rotatably supports the roller arm and enables the tension roller to reciprocate in both forward and reverse directions so as to intersect the winding path;
A sensor plate that is rotatable about the roller rotation axis and alternately formed with detection convex portions and detection concave portions that can be detected by the first sensor and the second sensor;
The printing paper winding device according to claim 1, wherein the printing paper winding device is provided. The printing paper winding device according to claim 1, wherein the winding control unit controls the printing paper winding device independently of a printer control unit of the printer that prints on the printing paper.

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