JPS6241933B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a label issuing device that intermittently feeds a long mount to which a label is attached and peels off the label.

2. Description of the Related Art An example of a label feed control device in a conventional label issuing device will be described with reference to FIGS. 1 to 4. First, labels 2 of a predetermined size are adhered to a long mount 1 at equal pitches, and the mount 1 is wound into a roll and set in the label supply section 3. Then, the mount 1 passes through a printer 4, a peeling plate 5 serving as a peeling section, and a feed roller 7 serving as a mount pull-out section driven by a motor 6, and reaches a mount winding section 8. A photoelectric detector 9 is provided on the front side of the printer 4, and a label presence/absence detector 10 is provided at the tip of the peeling plate 5 to detect the presence or absence of the peeled label 2. . Further, the mount 1 is provided on the front side of the peeling plate 5.
A paper holding portion 11 is provided that provides resistance to the feeding of the paper.

Therefore, the CPU 14 to which the weighing section 12, the printer 4, and the display and operation section 13 are connected has an I/O
port 15 is connected, and the label presence/absence detector 10 passes through the label presence/absence detection AMP 16 to the I/
The paper feed controller 17 is connected to the port 15, and the paper feed controller 17 is also connected to the paper feed controller 1.
7 is connected to the motor 6 and to the detector 9 via a label detection AMP 19 having a variable resistor 18.

Therefore, the label presence/absence detector 10 issues an operation command on the condition that the D signal is at H level when the label 2 is not present, and this D signal is at H level.
In other words, when signal A is output, paper feed controller 17
generates a signal C (H level), drives the motor 6, and feeds the mount 1. At this time, the signal C is also applied to the CPU 14 from the I/port 15, and controls the operation of parts that should not operate during paper feeding. By this feeding of the mount 1, the label 2 is peeled off and protrudes, causing the output signal D of the label presence/absence detector 10 to become L level. When the detector 9 detects the position as described later and generates the signal B on the condition that the signal D is L level, the signal C of the paper feed controller 17 becomes L level, and the motor 6 is stopped. At the same time, the prohibition command in the CPU 14 is canceled.

Note that the detector 9 detects the light transmittance of the mount 1 and the label 2, and as shown in FIG.
When the label 2 and the label 2 overlap, there are three types: when the printed part 21 of the label 2 is also transmitted. Specifically, the signal B is generated at the position of only the mount 1, and this detects the difference in light amount when only the mount 1 and when the mount 1 and the label 2 are overlapped. The signal from this detector 9 determines the operating reference position of the printer 4.

Problems to be Solved by the Invention Conventionally, the paper presser section 11 is in a state of constantly operating to press down the backing paper 1, which generates the tension of the backing paper 1 necessary for peeling off the label 2, and , even if a pulling force is applied to the mount 1 when taking out the label 2, the mount 1 does not move and prevents the mount 1 from shifting. Since the feeding must be performed intermittently, the torque of the motor 6 must be large. Therefore, it is difficult to use a pulse motor.

The present invention has been made in view of these points, and an object of the present invention is to provide a label issuing device in which the output of the motor for feeding the liner can be small.

Means for Solving the Problem The mount is configured such that it starts when the printer finishes printing on the label, detects the leading edge of the label using a label presence/absence detector, then feeds the label by a predetermined distance, and then stops. A paper feed control unit is provided to control the drive of the motor of the mount drawer, and when the motor of the mount drawer is stopped, the pressing force of the pressing member of the paper presser is increased, and at least when the motor of the mount drawer is started, the paper presser is increased. and an actuating part for canceling the increase in the pressing force caused by the pressing member of the part.

Function When feeding the backing paper, the pressing member of the paper holding part only presses the backing paper with its own pressing force, so the pressing force is small and the feeding resistance is low, and the backing paper is not fed. When there is no movement, the actuating body acts and the pressing force is increased by the pressing member, and as a result, the feeding resistance of the backing paper increases and even if an external force is applied when taking out the label, the backing paper does not move and is stable.
Thereby, the torque of the motor of the mount drawer part may be low.

Embodiment A first embodiment of the present invention will be described based on FIGS. 5 to 11. Components that are the same as those described in FIGS. 1 to 4 are designated by the same reference numerals, and description thereof will be omitted. In this embodiment, a label 2 is attached to the front part of a peeling plate 5 as a label peeling part in the running path of the mount 1.
A label detector 23 is provided which has a leading edge detection function for detecting the arrival of the leading edge 22 of the label 2 and a presence/absence detection function for detecting the presence or absence of the label 2. A slit plate 27 on which a large number of slits 26 are arranged on the circumference is attached to the shaft 25 of the feed roller 7 constituting the mount drawer part, and the slit detector detects the slits 26 by facing the slit plate 27. 28. A paper presser section 11 is provided between the label supply section 3 and the printer 4, and the details of the paper presser section 11 are as shown in FIG.
That is, a receiving plate 29 is provided below the mount 1, and a substrate 30 is provided above at a predetermined interval. A leaf spring 31 as a pressing member that constantly applies a small pressing force is provided at the bottom of this base plate 30, and a pressing body 3 connected to a solenoid 32 as an actuating body is provided on the upper part of this leaf spring 31.
3 is provided. That is, this pressing body 33
It is always urged upward by a spring 34 and penetrates the substrate 30. In other words, when the solenoid 32 is energized, the movable iron core 35 is lowered, and the pressing body 33 presses the leaf spring 31 to increase the pressing force on the mount 1.
This applies strong braking to the feed.

The label detector 23 is connected to the I/port 15 connected to the CPU 14 via the leading edge detection AMP 35, and a paper feed controller 36 as a paper feed control unit to which the motor 6 is connected is also connected. ing. A feed amount setting device 37 such as a digital switch serving as a feed amount setting section is connected to the paper feed controller 36, and the slit detector 28 is also connected via a slit detection AMP 38.

Therefore, the label 2 is placed on the label detector 22.
When signal B does not exist, signal B is at H level, but when signal B is at H level, CPU1
When the signal A is generated from the paper feed controller 36, the signal D (H level) is generated from the motor 6.
is operated to feed the mount 1, and a signal D is given to the CPU 14 as a prohibition signal for parts that should not be operated during paper feeding. And motor 6
When starting the slit plate 27 due to the inertia of each part.
Since the rotation speed of is low, the slit detection AMP38
The pulse width of the output signal C is large, but the pulse period becomes constant after the initial state. When such a mount 1 is fed at a constant speed, the label 2 is peeled off and protrudes from the peeling plate 5, and the leading edge 22 of the label 2 is finally detected by the label detector 23. At the same time as this detection, the output signal B from the leading edge detection AMP 35 becomes L level. In response to this signal B, the paper feed controller 36 starts counting the signal C from the slit detector 28, and when the count reaches the number preset by the feed amount setting device 37, the signal D becomes L level, and the motor 6 to stop. Therefore, after the leading edge 22 of the label 2 is detected by the label detector 23, the label 2 is fed out a certain amount and then stopped. Therefore, the reference signal is the detection of the leading edge 22, and unless the label 2 is transparent, the difference in transmittance is large, and the printed part 2 of the label 2
1 is irrelevant, so a very accurate detection is achieved.

Further, unless label 2 is removed, signal B remains at L level, so signal A is not output, other parts do not operate, and label 2 is not issued twice. Therefore, the label detector 23 has a function as a conventional label presence/absence detector.

Next, a more detailed explanation will be given based on FIG. 10. What is shown in FIG. 10 is merely a concrete implementation of each part of the block shown in FIG. 8, and the basic operation is completely unchanged. First, the label detector 23 consists of an LED 39 and a phototransistor 40, and the LED 39 is connected to an oscillator 42, which is also connected to a conversion circuit 41, via a driver 43. Further, the phototransistor 40 is connected to the conversion circuit 41 via a waveform shaping circuit 44. The oscillation frequency of the oscillator 42 is about 3 KHz, and the LED 39 periodically emits pulsed light, and the conversion circuit 41 converts the pulsed output of the phototransistor 40 into DC H and L levels. In other words, when label 2 does not exist, H
If label 2 exists, the output will be L level. The purpose of using pulsed light emission in this way is to prevent the effects of ambient light and to
This is to increase reliability by intensifying the light from the LED 39 with a thin pulse since the phototransistor 40 and the phototransistor 40 are far apart.

Therefore, the conversion circuit 41
5 and an OR gate 45, and this OR gate 45 is connected to a down counter 46 which is a main component of the quantitative feeding means. A feed amount setting device 37 is connected to this down counter 46. An inverter 47 is connected to the input side of the OR gate 45, and the input side of the inverter 47 has an I/port 15 and a flip-flop 4.
The output section Q of No. 8 is connected thereto. This flip-flop 48 is connected to the I/port 15 and the down counter 46, respectively. Also,
The output of the flip-flop 48 is connected to the driver 4.
It is connected to the motor 6 via 9.

On the other hand, the slit detector 28 provided on the slit plate 27 includes an LED 50 and a phototransistor 51.
is connected via a waveform shaping circuit 52 to a differentiation circuit 53 which differentiates the leading and trailing edges of the pulse to generate twice the number of slits 26, and this differentiation circuit 53 is connected to the down counter 46. Further, the differentiation circuit 53 is connected to an overrun detector 54 for overrun detection, and this overrun detector 54 is connected to the I/port 15.

Furthermore, a changeover switch 56 is connected to the I/port 15 to switch the printing state between one stage and two stages.

Further, one pole of a solenoid 32 connected to the power supply Vcc is connected to the output terminal of the flip-flop 48, and as shown in FIG. Release the presser foot.

Therefore, the label 2 is placed on the label detector 23.
When there is no output, or when flip-flop 48 is reset, the output of OR gate 45 is at H level and loads the contents of feed amount setter 37 into down counter 46. Of course, no matter what the contents of the down counter 46 are,
Since it is loaded when the output of the OR gate 45 becomes H level, it can also be considered as a preset. When a feed signal is output from the I/port 15 in this state, the flip-flop 48 is set, the output of the inverter 47 is set to L level, and the driver 49 applies AC 100V to the motor 6. As a result, the motor 6 rotates to feed the mount 1, and at the same time the slit plate 27 rotates, causing a pulse to be generated from the phototransistor 51.
This pulse is applied to down counter 46 as a clock signal. However, the conversion circuit 41
Since the output from the down counter 46 is still at H level, the contents of the down counter 46 remain unchanged.

While this state continues, when the leading edge 22 of the label 2 is detected by the label detector 23, the output from the conversion circuit 41 becomes L level and the load on the down counter 46 is released. From this time on,
When a pulse from the slit detector 28 side is input, the contents of the down counter 46 are subtracted, and when it reaches zero, the flip-flop 48 is reset. This causes the motor 6 to stop and the down counter 46 to be loaded again.

In this way, after the leading edge 22 of the label 2 is detected, the mount 1 is fed by a certain amount and then the mount 1 is stopped.

Therefore, the overrun detector 54
Even after the motor 6 has stopped, there is an overrun of the mount 1, and if some other operation is performed during this overrun, there is a risk of malfunction, so a signal is given to the CPU 14 at a certain time interval after the motor 6 stops. . A detailed description of the overrun detector 47 will be omitted.

Next, a second embodiment of the present invention will be described based on FIGS. 12 and 13. In this embodiment, the connection state of the solenoid 32 is different from that shown in FIG.
An AND gate 57 is connected to the output side of the AND gate 57 through an inverter 58 and a solenoid 3 connected to Vcc through an inverter 58.
2 single poles are connected.

Therefore, unless the output of the AND gate 57 becomes H level and the output side of the inverter 58 becomes L level, the solenoid 32 is not energized, so that the output of the conversion circuit 41 is L and the output of the flip-flop 48 is both L. The paper presser 11 cannot press the mount 1 unless the following conditions are met. Therefore, as is clear from FIG. 13, the mount 1 is held down only until the output of the flip-flop 48 becomes L, paper feeding is stopped, and the label 2 is removed.

In this way, in each of the above embodiments, the motor 6
Although the explanation has been made for the case where the motor is an induction motor, in any of the embodiments, the pressing force of the pressing body 33 is not acting on the mount 1 during paper feeding, so the feeding force of the mount 1 may be small. As a result, the output of the motor 6 that drives the feed roller 7 may be extremely small. In particular, in the second embodiment, the time for energizing the solenoid 32 is short, and power can be saved.

Next, a third embodiment of the present invention will be explained based on FIGS. 14 and 15. In this embodiment, a pulse motor is used as the motor 6, and the conversion circuit 41 of the label detector 23 that detects the leading edge is connected to the I/port 15.
A driver 59 connected to port 15 is connected to motor 6. A paper feed control section is configured by software built into the CPU 14. Further, one pole of a solenoid 32 connected to Vcc via inverters 60 and 61 is connected to the I/port 15.

When printing is performed based on the start signal, the output of the label presser H, that is, the output of the inverter 61 becomes H, the power supply to the solenoid 32 is cut off, and the force for pressing the mount 1 is reduced. After that, the motor 6 performs one pulse rotation, and until the label detector 23 detects the leading edge 22 of the label 2, the motor 6 continues to rotate every pulse and feeds the label 2, until the label detector 23 detects the leading edge 22 of the label 2. When the edge 22 is detected, a revolution counter RAM (not shown) is cleared. Next, the motor 6 rotates for one pulse, increments the rotation counter by +1, and compares the contents with the feed amount RAM (not shown). A predetermined number is stored in advance in this feed amount RAM. In this way, the contents of the rotation counter RAM are sequentially incremented by +1 until the two match, and when the two match, the label presser L output, that is, the output of the inverter 61 becomes L, and the solenoid 32 is energized, and the paper The presser is in a holding state, and the motor 6 is stopped and returned to the start.

Next, FIG. 16 shows a fourth embodiment of the present invention, in which the conversion circuit 41 and the I/port 15 are connected to the input side of the NAND gate 62, and the output of the NAND gate 62 is connected to the input side of the NAND gate 62. The solenoid 32 is connected to the side via an inverter 63. Therefore, since the energization to the solenoid 32 is controlled taking into consideration the condition of the presence or absence of the label, the first
Operation with timing similar to that shown in FIG. 3 becomes possible.

Effects of the Invention As described above, the present invention starts when the printer finishes printing on the label, detects the leading edge of the label by the label presence/absence detector, then feeds the label by a predetermined distance, and then stops. A paper feed control unit is provided to control the drive of the motor of the mount pull-out unit, and when the motor of the mount pull-out unit is stopped, the pressing force by the pressing member of the paper presser is increased, at least when the motor of the mount pull-out unit is started. Since an actuating part is provided for canceling the increase in the pressing force by the pressing member of the paper presser, when the mount is being fed, the pressing member of the paper presser presses the mount with its own pressing force. Since the pressing force is small and the feeding resistance is low, when the liner is not being fed, the operating body acts and the pressing member increases the pressing force, which increases the feeding resistance of the liner and causes the label to The mount does not move even when an external force is applied at the time of extraction, and is stable, so that the torque of the motor of the mount pull-out part does not need to be low.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional device, Figures 2a and b are side views showing a mount with a label attached and its light transmittance, Figure 3 is a block diagram, and Figure 4 is its timing chart. 5 is a side view of the device showing the first embodiment of the present invention, FIG. 6 is an enlarged sectional view of the paper presser section, FIG. 7 is a rear view of the feed roller section, and FIG. 8 is a block diagram. Figure 9 is the timing chart, 1st
Figure 0 is a block diagram showing Figure 8 in detail, Figure 11.
12 is a block diagram showing a second embodiment of the present invention, FIG. 13 is a timing chart thereof, FIG. 14 is a block diagram showing a third embodiment of the present invention, and FIG. 15 is a timing chart. is a flowchart, and FIG. 16 is a block diagram showing a fourth embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Mounting paper, 2... Label, 3... Label supply part, 4... Printer, 5... Peeling plate (label peeling part), 11... Paper holding part, 23... Label detector, 31... Leaf spring (pressing member), 32... solenoid (operating body), 36... paper feed controller (paper feed control section).

Claims (1)

[Claims] 1. A printer and a paper pressing section that is equipped with a pressing member that presses the mount with a constant pressure between a label supply section that holds a long mount with a label attached thereto and a mount drawer that pulls out the mount. In the label issuing device, a label detector is provided on the label protruding side of the label peeling unit to detect the presence or absence of the label, and the label is started when the printer finishes printing on the label. a paper feed control unit that controls driving of a motor of the mount drawer so that the leading edge of the label is detected by a label detector, the paper is fed by a predetermined constant dimension, and then the motor is stopped; and the mount drawer is an actuating part that increases the pressing force by the pressing member of the paper pressing part when the motor of the paper pressing part stops, and cancels the increase in pressing force by the pressing member of the paper pressing part at least when the motor of the mount drawing part starts. A label issuing device characterized by: