JP4723393B2 - Printing paper take-up device - Google Patents

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 contacting 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, depending on the position of the tension roller, the winding start (winding on) and winding stop (winding off) are controlled by the printer. The printing paper issuance (print discharge) operation is followed.
However, in order to perform on / off control of the winding operation, it is only possible to detect the specific position of the tension roller by a sensor provided in the winding path of the printing paper. Regardless of the diameter, only a constant winding operation, that is, a winding operation at a set winding speed is performed. Therefore, the winding speed is relatively slow compared to the issuance speed from the printer, and the printing paper becomes slack, or the winding speed is too high. There is a problem that the printer is in a state of being pulled (pulled) with the take-up device, causing printing misalignment or paper cutting in the printer.
In order to cope with such a problem, it is necessary to limit the issue speed of the printer, the winding diameter, the variable control of the winding speed, and the like.
Limiting the printing speed of the printer means a decrease in print processing capability, and there is a problem that the flexibility as a printer is lacking.
Also, in order to wind printing paper around the winding shaft in the form of a roll, when the winding shaft is rotated at the same rotational speed, the winding diameter is smaller at the beginning of winding and at the end of winding. The winding speed (winding length per unit time) becomes smaller, the winding diameter becomes larger at the end of winding and the winding speed becomes larger, and the larger the winding diameter becomes, the more remarkable the speed difference becomes. Therefore, it becomes difficult to deal with the above-mentioned problem of sagging of printing paper and printing deviation, and it is conceivable to limit the winding diameter, but this limitation means a reduction in winding processing capacity, and should be avoided as much as possible. It is a technique.

In particular, when the winding shaft is provided with a torque limiter that can limit the winding torque in accordance with the increased weight of the printing paper wound on the winding shaft, the drive motor When a stepping motor, for example, is used as the drive motor, it is possible to prevent the motor from stepping out and slow down the response speed to the drive signal from the control unit. Thus, it is possible to control the rotation speed so as to realize a stable winding operation.
Thus, when the winding diameter is increased and the weight of the printing paper is increased, if winding is started (resumed) from a certain winding stop state, the winding is performed regardless of the presence or absence of the torque limiter. Although the initial speed is small, there is a problem that once the rotation starts, a centrifugal force is applied, and the rotational speed or the winding speed accompanying the winding is accelerated and it is difficult to stop.
In other words, when the winding diameter becomes particularly large, the response speed to the sensor for detecting the position of the tension roller and controlling the winding speed decreases, and as a result, the initial winding speed and the winding speed are increased. If the difference from the take-up speed becomes large, especially if the take-up speed is increased, there is a problem that excessive winding occurs on the take-up shaft, and printing failure occurs on the printer side.

    As for variable control of the winding speed, various mechanisms have been developed as in Patent Document 1, but the winding diameter of the printing paper can be adjusted without being affected by the printing issuance of the printing paper from the printer. Accordingly, there is a problem that it is difficult to obtain a stable and continuous winding operation.

    The above-described printing paper take-up device is controlled integrally with the printer by the printer control unit, and is practically impossible to drive except for a specific printer. There is a problem that it does not have an appropriate winding function and is not flexible in combination with a printer.

JP 2003-252501 A

    The present invention has been considered in view of the above-described problems, and provides a printing paper winding device capable of obtaining a stable and continuous winding operation in accordance with the winding diameter of a belt-like printing paper. Is an issue.

    Another object of the present invention is to provide a printing paper winding device that can control the winding speed or winding timing (starting and stopping of winding) with good response according to the winding diameter of the printing paper. And

    The present invention also provides a printing paper winding device that can control the winding speed in accordance with the passage time corresponding to the position of the tension roller in the tension region, particularly when the winding diameter is increased. Let it be an issue.

    Moreover, this invention makes it a subject to provide the printing paper winding apparatus which can enlarge the winding diameter which can respond.

    Further, the present invention can be controlled independently even if it is arranged independently from a printer or the like, and the printing paper discharged from any printer can be wound at a winding speed capable of following the issuing speed. It is an object of the present invention to provide a print paper winding device that can be removed.

That is, the present invention divides the movable region of the tension roller into four parts so that the position or posture of the tension roller can be grasped sequentially, and the position of the tension roller can be detected, and each tension region (particularly the first and second regions) can be detected. Focusing on the control to correct the winding speed of the printing paper by the winding shaft or the on / off of the winding operation according to the passing time (winding time or rising time) of the tension area) A winding shaft for winding the printed belt-shaped printing paper in a roll shape, a drive unit for rotationally driving the winding shaft, and the printing paper abutting on the upstream side of the winding shaft. A tension roller capable of reciprocating a predetermined tension area as the printing paper is wound to apply tension to the printing paper; And a sensor capable of detecting in which part of the tension area the tension roller is located, and the tension roller is located by the output signal from the sensor. The first tension area, the second tension area, the third tension area, and the winding path of the printing paper are the minimum, the areas of which are adjacent to each other continuously, and the winding path of the printing paper has the maximum length. A winding control unit that determines which of the fourth tension regions is a long one, and the winding control unit includes a first winding region in which the tension roller passes through the first tension region. The transit time and the second transit time passing through the second tension region are measured, and the second transit time is differentiated from the first transit time. When the pulled time difference is equal to or greater than a predetermined set time difference, the winding operation of the printing paper by the winding shaft is stopped when the tension roller reaches the third tension region, and the first passage is performed. If the time difference obtained by subtracting the second passage time from the time is less than a predetermined set time difference , the winding operation of the printing paper by the winding shaft is stopped when the fourth tension area is reached. It is a printing paper winding device characterized in that

The second invention comprises a winding shaft for winding a printed belt-like printing paper into a roll,
A drive unit that rotationally drives the take-up shaft, and the print paper abuts on the upstream side of the take-up shaft and reciprocates in a predetermined tension region as the print paper is taken up. A tension roller capable of imparting a printing paper winding device,
A sensor capable of detecting in which part of the tension region the tension roller is located, and the tension region where the tension roller is located are continuously adjacent to each other by an output signal from the sensor. Any of the first tension area, the second tension area, the third tension area, and the fourth tension area where the winding path of the printing paper becomes the minimum length is the winding length of the printing paper. A winding control unit that determines whether the tension roller is passing, the winding control unit measures a passing time for the tension roller to pass through the second tension region, and the passing time is set to a predetermined value. When the time is less than the passing time, the winding of the printing paper by the winding shaft when the tension roller reaches the third tension region. Ri when operation ends the passing time exceeds the setting transit time, so that the tension roller to stop the winding operation of said printing paper by said winding shaft when it reaches the fourth tension regions It is a printing paper winding device characterized in that

    In the first and second inventions, the sensor includes a first sensor and a second sensor, and further supports a roller arm that holds the tension roller and the roller arm so as to be rotatable. The tension roller can be reciprocated in both forward and reverse directions so as to intersect the winding path, and can be rotated around the roller rotation shaft, and the first sensor And a sensor plate in which detection convex portions and detection concave portions that can be detected by the second sensor are alternately formed.

    Further, the winding control unit can control the printing paper winding device independently of a printer control unit of a printer that prints on the printing paper.

    A torque limiter capable of limiting the winding torque according to the weight corresponding to the winding diameter of the printing paper wound on the winding shaft can be provided on the winding shaft.

    In the printing paper take-up device according to the present invention, when the tension roller passes through the tension region, the passage time in the second tension region (second passage time) becomes extremely short. When it is determined that the winding diameter has become particularly large, the control is performed to stop the winding of the printing paper when the third tension region is reached, so that acceleration starts to be applied from the initial winding speed. Depending on the timing, winding can be stopped, and excessive winding tightening on the winding shaft and printing failure on the printer side can be prevented.

    Particularly, according to the first invention, the time difference between the first passage time when the tension roller passes through the first tension region and the second passage time when the tension roller passes through the second tension region is equal to or larger than a predetermined set time difference. In this case, when the tension roller reaches the third tension area, control is performed so that the winding operation of the printing paper by the take-up shaft is stopped, so that the tension passing through the first tension area and the second tension area is controlled. The winding speed corresponding to the continuous and correlated movement of the roller can be controlled.

In particular, according to the second invention, when the passage time (second passage time) for the tension roller to pass through the second tension region is equal to or shorter than the predetermined set passage time, that is, the second tension is extremely early. In the case of passing through the area, since the control is performed to stop the winding operation of the printing paper by the winding shaft when the tension roller reaches the third tension area, the passing time of the second tension area is controlled. Only by this, the winding speed corresponding to the relative movement of the tension roller can be controlled.

    In the present invention, since the timing of stopping the winding is controlled according to the passing time (winding speed) of the tension roller that passes through the tension region, a stable winding operation can be ensured and the printer side We realized a printing paper take-up device that can avoid printing defects.

Next, a printing paper winding device according to a first embodiment of the present invention (first 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 take-up device 2. The printing paper take-up device 2 guides and introduces the apparatus main body 11 and the printed printing paper 3 into the printing paper take-up device 2. 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 take-up shaft 33 is provided with a torque limiter 36 that can limit the take-up torque according to the weight corresponding to the take-up diameter of the printing paper 3 taken up by the take-up shaft 33.

The operation unit 16 is provided in a portion of the apparatus main body 11 in the vicinity of the winding unit 15, and the start / stop button 37 for starting and stopping the rotational drive of the winding shaft 33 and the operation state of the start / stop button 37 are indicated. A status display unit 38 using LEDs or the like, and a winding direction display unit 39 that indicates the winding direction of the printing paper 3 with an arrow.
When the start / stop button 37 is pressed and the winding operation of the printing paper 3 is performed, the status display unit 38 is lit, and when the winding is stopped, the status display unit 38 blinks.
The winding direction display unit 39 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.
Note that the winding control unit 18 measures the passing time of the tension roller 13 through each of the first tension region R1, the second tension region R2, the third tension region R3, and the fourth tension region R4. Timer 40 is provided, and when the first sensor 24 and the second sensor 25 detect that it has entered each tension area (see FIG. 4), the timer 40 is started and exits the tension area. When the timer 40 is detected, the timer 40 is stopped and the passage times of the respective tension regions (particularly the first passage time T1 of the first tension region R1 and the second passage time T2 of the second tension region R2) are determined. Enable measurement.

    In the printing paper take-up device 2 and the printer 1 having such a configuration, the printing paper take-up device 2 is mounted 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 continues to press the start / stop button 37 and drives the winding shaft 33 at a lower speed than the normal winding speed by the drive unit (drive motor 32) 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 of 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 37 is output, the winding shaft 33 is driven to rotate 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 pressing the start / stop button 37 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 initial setting winding operation of the printing paper 3 at a lower speed than the normal winding speed only by continuously pressing the start / stop button 37 in the operation unit 16. At the time of operation, 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.

When a predetermined amount of the printing paper 3 is taken up, the torque limiter 36 acts according to the take-up diameter to realize a gentle winding operation.
However, especially when the winding diameter is increased, as described above, the initial speed of winding is slowed down and the winding speed is accelerated to increase at the start of winding. Is performed so that more stable winding can be guaranteed.

    That is, FIG. 6 is a flowchart of control at the time of winding of the printing paper winding device 2 according to the present invention. In step S1, the passage time (first passage time) of the first tension region R1 of the tension roller 13 is shown. T1) is measured. In step S2, the passage time (second passage time T2) of the tension roller 13 through the second tension region R2 is measured.

In step S3, it is determined whether the time difference (T1-T2) between the first passage time T1 and the second passage time T2 is equal to or greater than a predetermined set time difference Ts.
If it is equal to or greater than the predetermined set time difference Ts, the tension roller 13 reaches the third tension region R3 in step S4 (more precisely, the boundary between the second tension region R2 and the third tension region R3). When the printing paper 3 is reached, the winding operation of the printing paper 3 by the winding shaft 33 is stopped. Of course, it is also possible to set a predetermined delay time and control to stop at an arbitrary position in the third tension region R3.

    When the time difference (T1-T2) is less than the set time difference Ts, in step S5, when the tension roller 13 reaches the fourth tension region R4 (more precisely, with the third tension region R3). When reaching the boundary with the fourth tension region R4, the winding operation of the printing paper 3 by the winding shaft 33 is controlled to be stopped.

In the present invention, paying attention to the state of passage of the tension roller 13 in the second tension region R2 when the winding diameter of the printing paper 3 on the winding shaft 33 is increased, only in the second tension region R2. The behavior of the tension roller 13 can also be detected and controlled.
That is, FIG. 7 is a flowchart of control at the time of winding of the printing paper winding device 2 according to the second embodiment of the present invention (second invention), and the configuration itself of the printing paper winding device 2 itself is as follows. 1 to FIG. 5, but the control by the winding control unit 18 is different.
In step S11, the passage time (first passage time T1) of the tension roller 13 through the first tension region R1 is measured. In step S12, the passage time (second passage time T2) of the tension roller 13 through the second tension region R2 is measured.

    In step S13, when the passage time passing through the second tension region R2 (second passage time T2) is equal to or shorter than a predetermined set passage time Tt, in step S14, the tension roller 13 enters the third tension region R3. When it reaches (more precisely, when it reaches the boundary between the second tension region R2 and the third tension region R3), the winding operation of the printing paper 3 by the winding shaft 33 is stopped. To control.

    When the passing time T2 exceeds the predetermined setting passing time Tt, in step S15, when the tension roller 13 reaches the fourth tension region R4 (more precisely, the third tension region R3 and the third tension region R3 4 is controlled so that the winding operation of the printing paper 3 by the winding shaft 33 is stopped.

Thus, according to any of the first and second inventions, when the winding diameter is increased, a stable winding operation is ensured, excessive winding on the winding shaft 33, and poor printing on the printer 1 side. Can be prevented.

1 is a schematic side view of a printing paper winding device 2 according to a first embodiment of the present invention (first invention) and a printer 1 connected to the printing paper winding device 2. FIG. 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 in which the 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 of control during winding. It is a flowchart figure of the control at the time of winding of the printing paper winding apparatus 2 by 2nd Example in this invention (2nd invention).

Explanation of symbols

1 Printer (Figure 1)
2 Printing paper winding device (first and second embodiments, 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 the 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 (sensor)
25 Second sensor (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 Torque limiter 37 Start / stop button (Fig. 2)
38 Status display section 39 Winding direction display section 40 Timer (FIG. 1)
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)
T1 First passage time T2 of the tension roller 13 in the first tension region R1 Second passage time Ts of the tension roller 13 in the second tension region R2 Setting time difference (FIG. 6)
Tt set transit time (Fig. 7)

Claims (4)

A winding shaft for winding the printed belt-shaped printing paper into a roll,
A drive unit for rotationally driving the winding shaft;
A printing paper having a tension roller that abuts on the printing paper on the upstream side of the take-up shaft and can reciprocate a predetermined tension region as the printing paper is taken up to apply tension to the printing paper. A winding device,
A sensor capable of detecting in which part of the tension region the tension roller is located;
According to an output signal from the sensor, the tension areas where the tension rollers are located are adjacent to each other continuously, the first tension area where the winding path of the printing paper becomes the maximum length, A winding control unit for determining whether the tension area, the third tension area, and the fourth tension area where the winding path of the printing paper has a minimum length;
Have
This winding control unit
Measuring a first passage time for the tension roller to pass through the first tension region and a second passage time for passing through the second tension region;
When the time difference obtained by subtracting the second passage time from the first passage time is equal to or greater than a predetermined set time difference, the printing paper by the winding shaft when the tension roller reaches the third tension region. When the time difference obtained by subtracting the second passage time from the first passage time is less than a predetermined set time difference , the winding operation is stopped when reaching the fourth tension region. A printing paper take-up device, wherein the printing paper take-up operation by the shaft is controlled to be stopped. A winding shaft for winding the printed belt-shaped printing paper into a roll,
A drive unit for rotationally driving the winding shaft;
A printing paper having a tension roller that abuts on the printing paper on the upstream side of the take-up shaft and can reciprocate a predetermined tension region as the printing paper is taken up to apply tension to the printing paper. A winding device,
A sensor capable of detecting in which part of the tension region the tension roller is located;
According to an output signal from the sensor, the tension areas where the tension rollers are located are adjacent to each other continuously, the first tension area where the winding path of the printing paper becomes the maximum length, A winding control unit for determining whether the tension area, the third tension area, and the fourth tension area where the winding path of the printing paper has a minimum length;
Have
This winding control unit
Measuring the transit time for the tension roller to pass through the second tension region;
When the passage time is equal to or less than a predetermined set passage time, the winding operation of the printing paper by the winding shaft is stopped when the tension roller reaches the third tension region, and the passage time is When the set passing time is exceeded, the printing paper is controlled to stop the winding operation of the printing paper by the winding shaft when the tension roller reaches the fourth tension region. Winding device. The sensor has a first sensor and a second sensor, and
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 take-up device according to claim 1 or 2, further comprising: The winding control unit independently of the printing paper winding device according to claim 1 or 2, wherein the controlling the printing paper winding device and the printer control unit of a printer for printing on the printing paper.

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