JPS6131914B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a label feed control device in a label printing machine that prints data from a measuring section on a label attached to a mount and then issues the label.

An example of a conventional label feed control device will be explained based on 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 reaches the mount winding section 8 via the printer 4, a peeling plate 5 serving as a peeling section, and a feed roller 7 serving as a feeding section driven by a motor 6. and,
A photoelectric detector 9 is provided on the front side of the printer 4, and a label presence/absence detector 10 for detecting the presence or absence of the peeled label 2 is provided at the tip of the peeling plate 5.

An I/port 14 is connected to the CPU 13 to which the weighing section 11, the printer 4, and the display and operation section 12 are connected, and the label presence/absence detector 10
is connected to the I/port 14 via the label presence/absence detection AMP 15, and is also connected to the paper feed controller 16.
This paper feed controller 16 is connected to the motor 6 and also has a variable resistor 17.
The detector 9 is connected via a label detection AMP 18 equipped with a label detection AMP 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 the signal A is output, the paper feed controller 16
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 13 from the I/port 14, and controls the operation of parts that should not operate during paper feeding. By feeding 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 at the L level, the signal C from the paper feed controller 16 goes to the L level.
The motor 6 is stopped and the prohibition command in the CPU 13 is canceled.

Therefore, the detector 9 detects the light transmittance of the mount 1 and the label 2, but as shown in FIG. When the labels overlap, label 2
There are three types of light when the light passes through the printing section 20 as well.
Specifically, signal B is generated from mount 1.
This is the position of only mount 1 and mount 1.
Since the difference in the amount of light between the label 2 and the label 2 is overlapped is detected, the following problem arises. That is,
If the label 2 has a high light transmittance, the difference will be extremely small, resulting in a disadvantage that a label with extremely high detection accuracy will be required. Further, as described above, if the label 2 has a printed part 20 such as a store name, the transmittance of this part will be low, so there will be a large difference from the label 2 part, which may cause a detection error. Furthermore, there is also the trouble of having to adjust the variable resistor 17 to adjust the detection level every time the thickness of the mount 1 changes. Moreover, when the size of the label 2 changes, the position of the detector 9 must be changed, but since the signal B from the detector 9 also serves as the operating standard for the printer 4, it is necessary to change the position of the detector 9 in order to determine the optimal position. There is also the problem that printing must be performed multiple times, and the label 2 is wasted.

Therefore, the present applicant has proposed a system that reliably detects the label and accurately determines its stopping position in Japanese Patent Application No. 55-69825 (see Japanese Unexamined Patent Publication No. 57-1045). . According to this,
In FIG. 1, the detector 9 is omitted, and the detector 10 has the ability to detect the leading edge of the label 2 and the label presence/absence detecting function, and feeds a fixed amount based on the leading edge detection. However, since this detector 10 is provided in the front part of the peeling plate 5, the finger must touch the detector 1 to take out the label 2 during label printing.
0, the leading edge of the label 2 is erroneously detected by the finger before it is detected by the detector 10, and the label is fed a certain amount from that point on. , and the label cannot be fed normally. This causes a shift in the printing position by the printer 4. Therefore, label 2 to be issued next
This is a waste of time.

Furthermore, if the detector 10 malfunctions for some reason and does not perform the label detection function and is always in the same state as no label, the label feed will not be controlled and the label 2 will continue to be fed forever. This results in waste of label 2.

The present invention has been made in view of the above points, and while taking advantage of the label leading edge detection method, it is also possible to detect the label when an erroneous signal is generated from the label detector or when the label detector malfunctions. The object of the present invention is to obtain a label feeding control device that can minimize feeding deviation.

A first embodiment of the present invention will be described based on FIGS. 5 to 12. Components that are the same as those shown in FIGS. 1 to 4 are designated by the same reference numerals, and description thereof will be omitted. The structure shown in Fig. 5 and Fig. 6 is
-69825 (see JP-A-57-1045), the leading edge detects that the leading edge 21 of the label 2 has reached the front part of the peeling plate 5 in the running path of the mount 1. A label detector 2 having a detection function and a presence/absence detection function for detecting the presence or absence of the label 2
A slit plate 26 having a large number of slits 25 arranged on the circumference is attached to the shaft 24 of a feed roller 7 which is connected to a motor 6 consisting of an induction motor by a belt 23. A slit detector 27 for detecting the slit 25 is also provided.

And I/port 14 connected to CPU 13
The label detector 22 is connected to the leading edge detection AMP 28, and a paper feed controller 29 to which the motor 6 is connected is also connected. A feed amount setting device 30 such as a digital switch is connected to the paper feed controller 29, and the slit detector 27 is also connected via a slit detection AMP 31.

Therefore, the standard feed amount L _A corresponding to the feed amount from the start of paper feed to the detection of the leading edge 21 of label 2 during normal liner feed is set, and I/port 1
Slit detection based on paper feed start signal A from 4
An auxiliary feed means 32 is provided which performs a counting operation of the standard feed amount _LA based on a signal from the AMP 31.
Further, an abnormality detection feed amount L _B smaller than the standard feed amount L _A is set, and an abnormality feed detection means performs a counting operation of the abnormality detection feed amount L _B based on a signal from the slit detection AMP 31 based on the paper feed start signal A. 33 are provided. That is, the abnormal feed detection means 33 finishes the counting operation earlier than the auxiliary feed means 32, and after the abnormal feed detection means 33 finishes the counting operation, the label detector 22
When the label detection signal B is generated from the label detection signal B, it is output as is to the paper feed controller 29 as a signal B', and when the label detection signal B is generated from the label detector 22 during the counting operation of the abnormal feed detection means 33, the auxiliary feeding means 32 is outputted as is. A signal is generated when the counting operation is completed.
A gate means 34 is provided for outputting an output to the paper feed controller 29 as B'.

As a result, when issuing a normal label,
When label 2 is not present in the label detector 22, signal B is at H level;
signal A from the CPU 13 side when is at H level.
When this occurs, a signal D is sent from the paper feed controller 29.
(H level) is generated, the motor 6 is operated to feed the mount 1, and a signal D is sent to the CPU as a prohibition signal for parts that should not be operated during paper feeding.
Give to 13. When the mount 1 is fed, the label 2 is peeled off and protrudes from the peeling plate 5, and the leading edge 21 of the label 2 is finally detected by the label detector 22. At the same time as this detection, leading edge detection AMP28
The output signal B from is at L level. At this time,
The counting operation of the abnormal feed detection means 33 has been completed, and the output signal B passes through the gate means 34 and is output as a signal B', and this signal B' causes the paper feed controller 29 to output the signal C from the slit detector 27. starts counting, and when the counted number reaches the number preset by the feed rate setting device 30, the signal D becomes L level and the motor 6 is stopped. Therefore, after the leading edge 21 of the label 2 is detected by the label detector 22, the label 2 is fed out a certain amount and then stopped. Therefore, the reference signal is the detection of the leading edge 21, and the difference in transmittance is large unless the label 2 is transparent, and the printed part 2 of the label 2
Since zero is irrelevant, 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 22 functions as a conventional label presence/absence detector.

By the way, if we consider a case where a finger is inserted into the label detector 22 before the leading edge 21 of the label 2 reaches the label detector 22 during label issuance, the signal B becomes L as in the case of leading edge detection. level. At this time, the abnormal feed detection means 33 is in the counting operation and the label has not been fed by the abnormality detection feed amount L _B , so the signal B is transmitted to the gate means 34.
It is invalidated and the label feed is switched to the standard feed amount _LA . When the counting operation of the auxiliary feeding means 32 is completed and the label has been fed by the standard feed amount L _A , it is assumed that the leading edge has been detected at this point, and the gate means 34 outputs a signal B', and the paper is fed. The controller 29 performs quantitative feeding. In this way, even if an erroneous signal is output from the label detector 22 due to a finger or the like, the standard feed amount L _A
Since the label feed is switched to the minute label feed, the error in label feed compared to normal leading edge detection is reduced.

Next, a more detailed explanation will be given based on FIG. 8. What is shown in FIG. 8 is merely a concrete implementation of each part of the block shown in FIG. 7, and the basic operation is completely unchanged. First, label detector 2
2 is composed of an LED 35 and a phototransistor 36, and the LED 35 is connected to an oscillator 38 which is also connected to a conversion circuit 37 via a driver 39. Further, the phototransistor 36 is connected to the conversion circuit 37 via a waveform shaping circuit 40. The oscillation frequency of the oscillator 38 is about 3 KHz, and the LED 35 periodically emits pulsed light, and the conversion circuit 37 converts the pulsed output of the phototransistor 36 into DC H and L levels. That is, when label 2 does not exist, the output is at H level, and when label 2 exists, the output is at L level. The purpose of using pulsed light emission in this way is to prevent the influence of ambient light and to increase reliability by intensifying the light of the LED 35 with a narrow pulse since the LED 35 and the phototransistor 36 are far apart.

Further, the conversion circuit 37 is connected to the I/port 14.
This AND gate 41 is connected via an OR gate 43 to a down counter 42 which is a main component of the quantitative feeding means. A feed amount setting device 30 is connected to this down counter 42 . Further, an inverter 44 is connected to the input side of the OR gate 43, and the I/port 14 and the output part Q of the flip-flop 45 are connected to the input side of the inverter 44. This flip-flop 45 is I/port 1
4 and the down counter 42, respectively. Further, the output of the flip-flop 45 is connected to the motor 6 via a driver 46.

On the other hand, the slit detector 27 provided on the slit plate 26 consists of an LED 47 and a phototransistor 48.
is connected via a waveform shaping circuit 49 to a differentiating circuit 50 which differentiates the leading and trailing edges of the pulse to generate a pulse twice as many as the slit 25, and this differentiating circuit 50 is connected to the down counter 42.

Thus, the signal from the inverter 44 is given as a load signal, and the differentiating circuit 50
A down counter 52 that is connected via an AND gate 51 and becomes a main component of the auxiliary feeding means 32
is provided. The output side of this down counter 52 is connected to the input side of the AND gate 51 via an inverter 53. Further, a setter 54 is connected to the down counter 52 to set the standard feed amount _LA . Similarly, a down counter 56 is provided which receives the signal from the inverter 44 as a load signal, is connected to the differential circuit 50 via an AND gate 55, and is a main component of the abnormal feed detection means 33. .
The output side of this down counter 56 is the inverter 5
7 to the input side of the AND gate 55. Further, a setter 58 is connected to the down counter 56 to set the abnormality detection feed amount L _B. A NAND gate 5 receives the signals from the down counter 56 as well as the signals from the conversion circuit 37 and the inverter 44.
9 is provided, and this NAND gate 59 is provided, and the output side of this NAND gate 59 is connected to the set terminal of flip-flop 60. The output part Q of this flip-flop 60 is connected to the inverter 6.
1 to the AND gate 41. Also, an AND gate 6 which uses an inverter 62 to invert the signal from the output section Q of the flip-flop 60 and the signal from the down counter 52.
3 is provided, and its output side is connected to the above-mentioned OR gate 43.
has been entered.

Here, the number of pulses corresponding to the constant feed amount S shown in FIG. 9 is set in the feed amount setting device 30,
In the setting device, a standard feed amount L _A corresponding to the feed amount from the start of paper feed shown in FIG. 9b to the detection of the leading edge of the label 2 shown in FIG. 9c is set as the number of pulses. In addition, in the setting device 54, the abnormality detection feed amount L _B is determined as the number of pulses by an experimentally determined value smaller than the standard feed amount L _A while taking into account the pitch error of the motor 6, the dimensional error of the label 2, etc. It is set. In other words, if the feed amount at a certain printing time in Figures 9b and c is L _A ', this L _A ' will be within the range of L _A ±α (α is the error), and L _A −α>L _B. It is set as follows.

Note that in FIGS. 9 and 11, the printer 4 is a data printing section 64 using a line printer or the like.
and a stamp 65 consisting of a product name stamp or the like.

Therefore, when label 2 is removed and there is no label 2 in the label detector 22 in the state shown in FIG. The contents of the feed amount setter 30 are loaded into the counter 42. Of course, down counter 4
No matter what state the contents of 2 are in, they are loaded when the output of the OR gate 43 becomes H level, so it can also be considered a preset. In this state I/
When the feed signal is output from the port 14, the flip-flop 45 is set as shown in FIG. As a result, the motor 6 rotates and the mount 1
When the slit plate 26 rotates at the same time, a pulse is generated from the phototransistor 48, and this pulse is applied to the down counter 42 as a clock signal. However, since the output from the conversion circuit 37 is still at H level and the output from AND gate 41 is at H level, the contents of down counter 42 remain unchanged.
On the other hand, the down counters 52 and 56 are unloaded due to the output of the inverter 44 which becomes L level with the start of this sheet feeding, and a counting operation is performed in which the contents of the down counters 52 and 56 are subtracted in accordance with the input pulse from the phototransistor 48 side. will be carried out.

When the label 2 comes to the position shown in FIG. 9c, the leading edge 21 is detected by the label detector 22, and the output from the conversion circuit 37 becomes L level.
At the time shown in FIG. 9c, the down counter 56
After the subtraction count for the abnormality detection feed amount L _B is completed,
It reaches zero and inhibits NAND gate 59. Therefore, flip-flop 60 is not set and
Since the gate 63 remains at the L level and the AND gate 41 goes to the L level, the down counter 4
The loading of 2 is canceled. That is, the conversion circuit 3
When the output of the down counter 7 reaches L level, the contents of the down counter 42 are subtracted when a pulse from the slit detector 27 side is input, and when it reaches zero, the flip-flop 45 is reset. As a result, the motor 6 stops and the down counters 42, 5
2,56 is loaded again.

In this way, after the front edge 21 of the label 2 is detected as shown in FIG. 9c, the feed of the mount 1 is stopped by a certain amount S shown in FIG. 9d. 9b to 9d show normal label 2 feeding, and the timing at that time is as shown in FIG. 10.

However, if feeding of the mount 1 is started from the position shown in FIG. 11b and a finger or the like is inserted between the label detectors 22 in the state shown in FIG. 11c, the front edge 21 of the label 2 does not reach However, it is detected by the label detector 22, and the output of the conversion circuit 37 becomes L level. However, at this point, the down counter 56 is in the process of subtracting, and the abnormality detection feed amount L
Since _B has not been sent, the output of NAND gate 59 becomes H level and flip-flop 60 is set. As a result, the output of the AND gate 63 becomes H level, and the load of the down counter 42 is not released. As a result, the sheet feeding not controlled by the down counter 42 continues.
In parallel with this, the down counter 52 continues to perform subtraction, and when the contents of the down counter 52 reach zero, the AND gate 63 goes to L level and the load of the down counter 42 is released. As a result, the label 2 is fed to the standard feed amount L _A from the start of feed shown in FIG. 11b to the state shown in FIG. Only the amount S will be sent. Therefore, if this embodiment is not used, only a certain amount S is fed as shown by the dotted line in FIG. As shown in FIG. 3, since the label is fed by a certain amount S from a state where the error is small compared to the original leading edge detection, the influence on the next label 2 to be located at the printing position is also small. FIG. 12 shows a timing chart at this time.

Note that in the above example, the down counters 42, 5
2 and 56, but instead of these, inexpensive up counters are used, and the setting device 3
They may be output by comparators that compare the contents of 0, 54, and 58, respectively.

Next, a second embodiment of the present invention will be described based on FIGS. 13 to 16. The same parts as in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted (the same applies hereinafter). In this embodiment, an excess detection feed amount L _c larger than the standard feed amount L _A is set, the paper feed start signal A is set, and the excess detection feed amount L _c is counted by the signal from the slit detection AMP 31. A detection means 66 is provided, and a second gate means 67 for controlling the output B of the leading edge detection AMP 28 based on the output of the excessive feed detection means 66 is connected to the paper feed controller 2.
It is provided in the front stage of 9.

Specifically, as shown in FIG. 14, in which most of the auxiliary feed means 32, abnormal feed detection means 33, and gate means 34 in FIG. 8 are omitted, the signal from the inverter 44 is given as a load signal. A down counter 69 which is connected to the differentiating circuit 50 via an AND gate 58 and becomes a main component of the excessive feed detection means 66 is provided. The output side of this down counter 69 is connected to the input side of the AND gate 68 via an inverter 70. Further, a setter 71 is connected to the down counter 69 to set the excess detection feed amount L _c . Then, an AND gate 73 is provided, which receives a signal obtained by inverting the output of the down counter 69 by an inverter 72 and a signal from the conversion circuit 37, and becomes the main part of the second gate means 67.
The output of the AND gate 73 is input to the OR gate 43 and is also passed through the inverter 74 to the
It is input to AND gate 68.

Here, the excess detection feed amount L _c is a value experimentally determined from the standard feed amount L _A while taking into account the pitch error of the motor 6, the dimensional error of the label 2, etc., in the same way as the abnormality detection feed amount L _B. The value increased by 1 is set as the pulse number.

When a feed signal is output from the I/port 14, the flip-flop 45 is set, the motor 6 is rotated, and feeding of the mount 1 is started. Then, when the leading edge 21 of the label 2 is detected, the output of the conversion circuit 37 becomes L level and the down counter 4
2 is carried out by a fixed amount (see FIG. 8). In this operation, the down counter 69 inputs the pulse from the phototransistor 48 side as a clock signal and is in the process of counting to subtract the contents of the down counter 69, but the AND gate 7
The output of No. 3 becomes L level upon detection of the leading edge 21, and the down counter 69 side does not act. In this way, normal label 2 is issued, and the first label
FIG. 5 shows a timing chart at this time.

By the way, consider a case where, after the feed of the mount 1 is started based on the feed signal, even if the leading edge 21 of the label 2 reaches the label detector 22 due to a malfunction of the label detector 22, no detection signal is generated. In this case, the output of the conversion circuit 37 remains at H level, and the down counter 42 is not controlled. On the other hand, the down counter 69, which performs a subtraction operation of the excess detection feed amount L _c at the start of paper feeding, outputs an H level and inhibits the AND gate 73 when its content becomes zero. This releases the loading of the down counter 42, and from this point forward, the label is fed by a certain amount S under the control of the down counter 42. Therefore, since the output of the conversion circuit 37 is at H level,
Label 2 continues to be fed in an uncontrolled state and label 2
There's no point in wasting it. After all, even if the label detector 22 does not work, the original leading edge 21 detection position and excess detection feed amount L
This can be reduced to just sending the extra difference between _c and c. A timing chart at this time is shown in FIG.

A third embodiment of the present invention is shown in FIGS. 17 to 21.
This will be explained based on the diagram. In this embodiment, a pulse motor 75 is used as the drive source, and the operation of the pulse motor 75 is controlled by program control. First, the conversion circuit 37 to which the label detector 22 is connected is connected to an I/port 14 connected to the CPU 13, and a pulse motor 75 is connected to this I/port 14 via a driver 76. As shown in FIG. 18, the RAM in the CPU 13 includes a feed amount RAM 77,
Standard feed amount with revolution counter RAM78
A RAM 79, an abnormality detection feed amount RAM 80, and an excessive detection feed amount RAM 81 are formed. Additionally, a leading edge counter RAM 82 and a warning RAM 83
is formed.

Further, the shape of the operation panel is constructed as shown in FIG. 19. First, a display section 84 is provided that is divided into unit price, weight, and price. Below this display section 84, a numeric keypad 85 of 0 to 9 and an execution key 86 are provided. On the left side of this, a print key 87, a manual An automatic changeover switch 88, a changeover switch 89 for selecting one-step printing or two-step printing, and a feed amount key 90 are provided. Further, on the right side of the numeric keypad 85, function keys 91 such as a feed key, a tare key, a detection amount setting key, a processing date setting key, an effective date setting key, and an erase key are provided. Furthermore, the display section 8
An abnormality warning light 92 is provided on the right side of 4.

Therefore, when the device starts as shown in FIG. 20, the weight of the weighing section 11 is taken in and stored in the weight RAM.
, multiply the contents of the unit price RAM set in advance by the contents of the weight RAM, and input the result into the price RAM, and display the contents of the unit price RAM, weight RAM, and price RAM at corresponding positions on the display section 84, The settings of the manual/automatic changeover switch 88, etc. are checked, that is, whether or not the key is pressed in is checked. If this key-in is done, feed amount key 9
Check for 0.

Pressing the feed amount key 90 means that the label detector 22 will set the feed amount S after detecting the leading edge of the label 2. That is, when the feed amount key 90 is pressed, the display section 84 goes out and the contents of the feed amount RAM 77 are displayed in the price column of the display section 84. The display at this time is the one that was previously set, and by pressing the numeric keypad 85, the contents of the set number are newly entered into the feed amount RAM 77 and the contents are displayed on the display section 84. and,
If the content is desired, the execution key 86 is pressed. This means that the feed amount S has been set, and the unit price, weight, and price are displayed again on the display section 84.

After setting the feed amount in this way, or
When the feed amount does not need to be changed, processing is performed using various keys that have been pressed in advance. In this case, if the detection amount setting key is pressed, a warning will appear.
If the content of the RAM43 is "0", the content of the leading edge counter 82 that counts from the start of liner feeding until the detection of the leading edge 21 of label 2 is the standard feed amount RAM7.
9 and the standard feed amount L _A is set. If the content of the warning RAM 83 is not "0", no setting is made even if the detection amount setting key is pressed and the process returns. and,
When the print key 87 is pressed, a check is made to see if printing is in progress, and the display returns to ``printing in progress.'' If printing is not in progress, a check is made to see if the weight data is 10 g or more. This check has the meaning of checking whether the item has been reliably placed on the weighing section 11, and also performs various checks specific to the weighing device, such as checking whether the price has overflowed or not. Next, the detection state of the presence or absence of a label is checked by the label detector 22. If label 2 exists, return to prevent duplicate issuance; if not, take in overrun input. This overrun input is not obtained from the circuit shown in FIG. 17, but is provided by an overrun detection mechanism (not shown). Of course, if it is overrunning, it will continue to wait, and will reach when overrunning stops.

From now on, the routine as shown in FIG. 21 is followed. i.e. processing date, unit price, weight, price
After transferring the RAM to the print controller, printing is performed by the printer 4. Then, at the same time as the feed of one mount is started, the leading edge counter RAM82 is cleared, and the contents of the standard feed amount RAM79 are changed to abnormality detection feed amount RAM80 and excessive detection feed amount RAM81.
In the abnormality detection feed amount RAM80, the abnormality detection feed amount L _B is set by the standard feed amount L _A -X (X is a constant amount), and the excessive detection feed amount
In the RAM 81, the excess detection feed amount L _C is set by the standard feed amount L _A +Y (Y is a constant amount).
Thereafter, the pulse motor 75 performs one pulse rotation, which is counted by the leading edge counter RAM 82. Then, the label detector 22 detects the label 2.
If the leading edge 21 of the abnormality detection feed amount RAM 81 is not detected, -1 is subtracted from the excess detection feed amount RAM 81. If the content is not zero, a check is made to see if the content of the abnormality detection feed amount RAM 80 is zero. After that, since it is not zero, -1 is subtracted, and the pulse motor 75 returns to one pitch rotation. Such a routine is carried out until the label detector 22 detects the leading edge 21 of the label 2, the pulse motor 75 continues to rotate for each pulse and feeds the label 2, and the label detector 22 detects the leading edge 21 of the label 2.
When detected, it is checked whether the contents of the abnormality detection feed amount RAM 80 are zero. If it is zero, the abnormality warning light 92 is turned off, the contents of the warning RAM 83 also become zero, and the revolution counter RAM 78 is cleared. Next, the pulse motor 75 rotates one pulse, adds +1 to the rotation counter RAM 78, and calculates the feed amount.
Compare the contents with RAM77. This feed amount RAM
77 stores a predetermined number in advance as described above. In this way, the contents of the revolution counter RAM 78 are sequentially increased by +1 until the two match.
When the two match, the pulse motor 75 stops and returns to the start.

By the way, if the contents of the abnormality detection feed amount RAM 80 have not become zero at the time of detection by the label detector 22, the abnormality warning light 92 lights up and a warning is issued.
A flag is raised in RAM83. Then, the pulse motor 75 rotates by one pulse, and the leading edge counter RAM
Add +1 to 82 and add this content and standard feed amount RAM7
9 and this is repeated until they match. When the two match, +1 is added to the rotation counter RAM 78 as in the normal state, and the content comparison with the feed amount RAM 77 is repeated. When the two match, the pulse motor 75 is stopped and started.

Further, when the leading edge 21 of the label 2 is not detected by the label detector 22, when the contents of the excess detection feed amount RAM 81, which is sequentially decremented by 1, become zero, the abnormality warning light 92 lights up and a flag is set in the warning RAM 83. . And rotation counter RAM7
The contents of 8 are set to Y, the pulse motor 75 rotates one pulse, and the rotation counter RAM 78 receives +1.
and compare the contents with the feed amount RAM 77.
Therefore, when the number of pulses equal to (S-Y) is repeated, the two match, and the pulse motor 75 stops and returns to the start. In this case, the excess detection feed amount
Until the RAM 81 becomes zero, only (L _A +Y) is sent, and then only (S-Y) is sent, so that a total of (L _A +S) is sent. However, as shown by the dotted line in FIG. 21, the route for setting the revolution counter 78 to Y may be omitted.

As described above, the present invention detects the leading edge of a label using a label detector and sends a certain amount of label.
Since the auxiliary feed means, abnormal feed detection means, and gate means are used together, even if an erroneous signal is generated from the label detector due to a finger, etc., it is possible to switch to standard feed and keep errors in label feed to a small level, thereby preventing misalignment of the printing position. In addition, by using the excessive feed detection means and the second gate means in combination, the label feed can be suppressed within a certain range even if the label detector is not detected. It is effective.

[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. Fig. 5 is a side view of the device showing the first embodiment of the present invention, Fig. 6 is a rear view of the feed roller portion, Fig. 7 is a block diagram, and Fig. 8 is a block diagram showing Fig. 7 in detail. 9 is an explanatory diagram showing the normal label feeding state, FIG. 10 is the timing chart, FIG. 11 is an explanatory diagram showing the abnormal label feeding state, and FIG. 12 is the timing chart, Fig. 13 is a block diagram showing the second embodiment of the present invention, Fig. 14 is a block diagram showing Fig. 13 in detail, Fig. 15 is a timing chart during normal label feeding, and Fig. 16 is a timing chart showing excessive label feeding. Timing chart during label feeding, Figure 17 is a block diagram showing the third embodiment of the present invention, Figure 18 is a RAM map, Figure 19 is a plan view of the operation panel, Figures 20 and 21 are flowcharts. It's a chat. DESCRIPTION OF SYMBOLS 1... Mounting paper, 2... Label, 5... Peeling plate (peeling part), 6... Motor (drive part), 7... Feed roller (feeding part), 21... Leading edge, 22... Label detector, 32
...Auxiliary feeding means, 33...Abnormal feeding detection means, 34
...Gate means, 42...Down counter (fixed amount feed means), 66...Excessive feed detection means, 67...Second gate means, 75...Pulse motor (drive unit), 92
...Abnormality warning light.

Claims (1)

[Scope of Claims] 1. A drive unit that drives a feeding unit that feeds a backing sheet with a label attached thereto, and a peeling unit that peels off the label, and the front edge of the label that is peeled off facing the peeling unit is provided. A label detector is provided for detecting the leading edge of the liner, and a quantitative feeding means is provided for controlling the operation of the drive unit so that the liner is fed by a certain amount after the leading edge is detected by the label detector. A standard feed amount corresponding to the feed amount from the start of paper feed to the detection of the leading edge of the label is set, and an auxiliary feed means is provided that counts this standard feed amount at the same time as paper feed starts, and detects abnormalities smaller than this standard feed amount. When the detection feed amount is set and the paper feed starts, an abnormal feed detection means is provided, and the leading edge detection signal of the label is detected during the counting operation of the abnormality detection feed amount by the abnormal feed detection means. A gate that disables the leading edge detection signal when output from the label detector, continues to feed the mount by the standard feed amount of the auxiliary feeding means, and operates the quantitative feeding means after the mount feeding by the standard feed amount is completed. A label feeding control device characterized by comprising means. 2. A label detector that is provided with a drive unit that drives a feeding unit that sends a mount to which a label is attached and a peeling unit that peels off the label, and that faces the peeling unit and detects the leading edge of the peeled label. and a quantitative feeding means for controlling the operation of the drive unit so that the mount is fed a certain amount after the leading edge is detected by the label detector, and the leading edge of the label is moved from the start of paper feeding to the leading edge of the label every time a label is issued. By storing the feed amount up to detection and pressing the feed amount setting key, the previous feed amount is set as the standard feed amount, and an auxiliary feeding means is provided that counts this standard feed amount at the start of paper feeding. By operating the amount setting key, a value obtained by subtracting a certain amount from this standard feed amount is set as the abnormality detection feed amount, and an abnormal feed detection means is provided that counts this abnormality detection feed amount at the start of paper feeding. When a leading edge detection signal of a label is output from the label detector during the counting operation of the abnormality detection feed amount in the means, the leading edge detection signal is invalidated and the liner continues to be fed by the standard feed amount of the auxiliary feeding means. A label feeding control device comprising a gate means for operating the quantitative feeding means after the standard feed amount of the liner is finished. 3. A label detector that is provided with a drive unit that drives a feeding unit that sends a mount to which a label is attached and a peeling unit that peels off the label, and that faces the peeling unit and detects the leading edge of the peeled label. and a quantitative feeding means for controlling the operation of the drive unit so as to feed the liner by a certain amount after the leading edge is detected by the label detector, and the label is fed from the start of paper feeding during normal liner feeding. The feed amount up to the leading edge detection is set in advance as the standard feed amount, and an auxiliary feed means is provided that counts this standard feed amount when paper feed starts, and the value subtracted by a certain amount from this standard feed amount is the abnormality detection feed amount. An abnormal feed detection means is provided which counts the abnormality detected feed amount at the start of paper feeding, and during the counting operation of the abnormality detected feed amount in the abnormal feed detection means, the leading edge detection signal of the label is detected when the label is detected. Gate means for disabling the leading edge detection signal when outputted from the device, allowing the auxiliary feeding means to continue feeding the mount by a standard feed amount, and operating the quantitative feeding means after the mount feeding for the standard feed amount is completed. A label feed control device characterized in that: 4. A label detector that is provided with a drive unit that drives a feeding unit that sends a mount to which a label is attached and a peeling unit that peels off the label, and that faces the peeling unit and detects the leading edge of the peeled label. and a quantitative feeding means for controlling the operation of the drive unit so as to feed the liner by a certain amount after the leading edge is detected by the label detector, and the label is fed from the start of paper feeding during normal liner feeding. A standard feed amount corresponding to the feed amount up to leading edge detection is set, and an auxiliary feed means is provided that counts this standard feed amount when paper feeding starts, and an abnormality detection feed amount smaller than this standard feed amount is set. An abnormal feed detection means is provided which counts the abnormality detected feed amount when the paper feed starts, and a label leading edge detection signal is output from the label detector while the abnormal feed detection means counts the abnormality detected feed amount. gate means is provided for causing the auxiliary feeding means to continue feeding the mount by the standard feed amount while disabling the leading edge detection signal when the leading edge detection signal has been detected, and to operate the quantitative feeding means after the mount feeding for the standard feed amount is completed; A label feeding control device characterized by being provided with an abnormality warning light that lights up when the mount is fed by the standard feeding amount by the auxiliary feeding means. 5. A label detector that is provided with a drive unit that drives a feeding unit that sends a mount to which a label is attached and a peeling unit that peels off the label, and that faces the peeling unit and detects the leading edge of the peeled label. and a quantitative feeding means for controlling the operation of the drive unit so as to feed the liner by a certain amount after the leading edge is detected by the label detector, and the label is fed from the start of paper feeding during normal liner feeding. A standard feed amount corresponding to the feed amount up to leading edge detection is set, and an auxiliary feed means is provided that counts this standard feed amount when paper feeding starts, and an abnormality detection feed amount smaller than this standard feed amount is set. An abnormal feed detection means is provided which counts the abnormality detected feed amount when the paper feed starts, and a label leading edge detection signal is output from the label detector while the abnormal feed detection means counts the abnormality detected feed amount. gate means is provided, which causes the auxiliary feeding means to continue feeding the mount by the standard feed amount while disabling the leading edge detection signal when the leading edge detection signal is detected, and operates the quantitative feeding means after the mount feeding by the standard feed amount is completed; An excessive feed detection means is provided, in which an excess detection feed amount larger than the standard feed amount is set and the excess detection feed amount is counted at the start of paper feeding. A label feeding control device characterized in that a second gate means is provided for operating the quantitative feeding means upon completion of the counting operation when a label leading edge detection signal is not outputted from the label detector.