JPS5940631B2 - label printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a label printing device 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 passes through a 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 reaches a mount winding section 8. A photoelectric detector 9 is provided on the front side of the printer 4, and the peeling plate 5
A label presence/absence detector 10 is provided at the tip of the label 2 to detect the presence or absence of the peeled label 2. However, measuring section 1
An I/O port 14 is connected to the CPU 13 to which the printer 4 and the display and operation unit 12 are connected, and the label presence/absence detector 10 is connected to the I/O port 14 via the label presence/absence detection AMP 15. A paper feed controller 16 is also connected, and this paper feed controller 16 is connected to the motor 6 and the variable resistor 1? The detector 9 is connected via a label detection AMP 18 equipped with a label detection AMP 18.

Therefore, when the label presence/absence detector 10 does not have the label 2, the D signal is at the H level, and when the D signal is at the H level, when an operation command, that is, the signal A is issued, the paper feed controller 16 sends the signal. C (H level) is generated, the motor 6 is driven, and the mount 1 is fed.

At this time, the signal C is also given to the CPU 13 from the I/O port 14 to control the operations 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 at the L level, the signal C of the paper feed controller 16 goes to the L level and the motor 6 is stopped. and CPU
13 will be lifted. However, the detector 9
Detects the light transmittance of mount 1 and label 2. As shown in Fig. 2, this transmittance is different when only mount 1 is used, when mount 1 and label 2 overlap, There are three types when the printed part 20 of the label 2 is also transmitted.

Specifically, the signal B is generated at the position of only the mount 1, but this detects the difference in light intensity between only the mount 1 and when the mount 1 and label 2 are overlapped. There are the following problems. That is, if the label 2 has a high light transmittance, the difference will be extremely small, and a label with extremely high detection accuracy will be required. Also,
As mentioned above, if the label 2 has a printed portion 20 containing the store name, etc., the transmittance of this portion will be low, and there will be a large difference from the label 2 portion, which may lead to detection errors. Furthermore, there is also the hassle 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.
Since the signal B from the detector 9 also serves as the operating standard for the printer 4, printing must be performed a plurality of times to determine the optimum position, which poses the problem that the label 2 is wasted. Further, since printing by the printer 4 is performed in a direction perpendicular to the traveling direction of the label 2, a large number of digits are required, resulting in an increase in size.

SUMMARY OF THE INVENTION An object of the present invention is to provide a label printing device in which sequential printing along the label feeding direction is efficient, and the printing control and label feeding control are reliable.

An embodiment of the present invention will be described based on FIGS. 5 to 14.

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. This embodiment is a label having a leading edge detection function for detecting that the front edge 21 of the label 2 has arrived at the front part of the peeling plate 5 in the running path of the mount 1, and a presence/absence detection function for detecting the presence or absence of the lapel 2. Detector 22
A slit plate 26 in which a large number of slits 25 are arranged on the circumference is provided on a 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 provided facing the slit plate 26. The slit plate 26 and the slit detector 27 constitute a feed amount detector. The label detector 22 is connected to the I/O port 14 connected to the CPU 13 via the leading edge detection AMP 28, and a paper feed controller 29 to which the motor 6 is connected is also connected.

This paper feed controller 29 is connected to a feed amount setting device 30, which is a feed amount setting section such as a digital switch, and is also connected to the slit detector 27 via a slit detection AMP 3l. Therefore, the label detector 22
When label 2 does not exist in the part, signal B is at H level, but when signal B is at H level, CPU
When signal A is generated from l3 side, paper feed controller 29
A signal D (H level) is generated from the motor 6, and the motor 6 is operated to feed the mount 1, and the signal D is given to the CPU 13 as a prohibition signal for parts that should not be operated during paper feeding.

When the motor 6 starts, the rotational speed of the slit plate 26 is low due to the inertia of the intervening part, so the slit detection AMP
Although the pulse width of the signal C output from 3l is large, the pulse period becomes constant after the initial state. When the mount 1 is fed at a constant speed in this manner, 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 AM
Output signal B from P28 becomes L level. This signal B
Therefore, the slit detector 2 is activated in the paper feed controller 29.
The signal C from 7 is started to be counted, and when the count reaches the number preset by the feed amount 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 as long as the label 2 is not transparent, the difference in transmittance is large and has nothing to do with the printed portion 20 of the label 2, so that extremely accurate detection is achieved. Also, unless label 2 is removed, signal B
Since continues to be at L level, 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. Next, a more detailed explanation will be given based on FIG. 9.

The block shown in FIG. 9 is only a concrete implementation of each part of the block shown in FIG. 7, and the basic operation is completely unchanged. First, the label detector 22 includes an LED 32 and a phototransistor 33, and the LED 32 is connected to an oscillator 35, which is also connected to a conversion circuit 34, via a driver 36. Further, the phototransistor 33 passes through the waveform shaping circuit 37 to the conversion circuit 34.
It is connected to the. The oscillation frequency of the oscillator 35 is approximately 3 KHz' (the LED 32 emits pulsed light periodically,
The conversion circuit 34 converts the output of the pulsed phototransistor 33 into a DC H.I. Convert to L level. In other words, when label 2 does not exist, the output is at H level, and label 2
exists, the output will be at L level. The purpose of using pulsed light emission in this way is to prevent the effects of ambient light and to
This is because the light from the LED 32 is strengthened with a thin pulse to improve reliability since the phototransistor 33 is located far away from the phototransistor 32. The conversion circuit 34 is connected to the I/O port 14 and the 0R gate 38, and the 0R gate 38 is connected to the down counter 39, which is a main component of the quantitative feeding means.

A feed amount setting device 30 is connected to this down counter 39. Further, an inverter 40 is connected to the input side of the 0R gate 38, and the input side of the inverter 40 has the I/O port 14 and the output part Q of the flip-flop 41.
are connected. This flip-flop 41 is I/
It is connected to the O port 14 and the down counter 39, respectively. Further, the output of the flip-flop 41 is connected to the motor 6 via a driver 42.
On the other hand, the slit detector 27 provided on the slit plate 26 consists of an LED 43 and a phototransistor 44, which differentiates the front and rear edges of the pulse through a waveform shaping circuit 45 and divides the number of slits 25 into two. It is connected to a differentiation circuit 46 that generates a double pulse, and this differentiation circuit 46 is connected to the down counter 39 and the 1/O port 14.

Further, the differentiation circuit 46 is connected to an overrun detector 47 for overrun detection, and this overrun detector 47 is connected to the 1/O port 14. Therefore, when there is no label 2 in the label detector 22 or when the flip-flop 41 is set, the output of the 0R gate 38 is at H level and the contents of the feed amount setter 30 are loaded into the down counter 39. .

Of course, no matter what state the contents of the down counter 39 are, it is loaded when the output of the 0R gate 38 becomes H level, so it can also be considered a preset. When a feed signal is output from the I/0 port 14 in this state, the flip-flop 41 is set, the output of the inverter 40 is set to L level, and the driver 42 sets the AClO
0 to the motor 6. As a result, the motor 6 rotates to feed the mount 1, and at the same time the slit plate 26 rotates, which generates a pulse from the lift-off transistor 44. This pulse is used as a clock signal to the down counter 39 and the I/O port. 14 and given. However, since the output from the conversion circuit 34 is still at H level, the contents of the down counter 39 remain unchanged. However, since the I/O port 14 is supplied with a clock signal from the phototransistor 44, a print command is given to the printer 4 by each clock signal or by frequency-dividing this clock signal, thereby giving a print timing. This printer 4 is different from the one shown in FIG. 1, and is, for example, a label printer that only prints one line, and as shown in FIG.
Printing is performed sequentially as shown in the following. While this state continues, when the leading edge 21 of the label 2 is detected by the label detector 22, the output from the conversion circuit 34, that is, the leading edge detection signal B becomes L level, and the down counter 39 is unloaded. From this point on, when a pulse from the slit detector 27 side is input, the contents of the down counter 39 are subtracted, and when it reaches zero, the flip-flop 41 is reset. This causes the motor 6 to stop and the down counter 39 to be loaded again. In this way, after the leading edge 21 of the label 2 is detected, printing is performed and the mount 1 is fed by a certain amount, and then the feeding of the mount 1 is stopped.

However, the overrun detector 41 detects the overrun of the mount 1 even after the motor 6 has stopped, and there is a risk of malfunction if some other operation is performed during this overrun. CP with
It gives a signal to Ul3.

In the above embodiment, the printer 4 has been described as a line printer, but a dot printer can also be used.

In this case, the slits 25 of the slit plate 26 are made to have a very small pitch, and the output from the slits 25 is fed into a character generator for printing control. In the present invention, as described above, when the backing paper with the label pasted is fed by the feed roller, the signal from the feed amount detector is given to the printing unit to set the printing timing, so that printing on the label is not possible. A simple printer can print as many characters as you need, which makes it easy to set the label print format, and a label detector detects the leading edge of the peeled label and when detected. Since the signal from the feed amount detector is counted and the drive unit that drives the feed roller is stopped when it reaches a predetermined number, the position of the label after peeling can be determined accurately, and its structure is also improved. This method has effects such as being extremely simple.

[Brief explanation of drawings]

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 a device showing an embodiment of the present invention, FIG. 6 is a back view of the feed roller portion, FIG. 7 is a block diagram, FIG. 8 is a timing chart, and FIG. FIG. 10, which is a detailed block diagram, is a plan view showing the correspondence between the print format of the label and the signals. 1...Paper, 2...Label, 4...
...Printer (printing part), 5...Peeling plate (peeling part), 6...Motor (5 drive part), 7...
...Feed roller, 22...Label detector, 2
7...Slit detector (feed amount detector), 39
...Down counter (quantity feeding means).

Claims (1)

[Claims] 1. In the above-mentioned device in which the backing sheet with the label pasted thereon is bent at the peeling section and is intermittently fed by a feed roller driven by a drive section while the label is peeled off and the printing section prints while the label is being fed. A feed amount detector that detects the amount of label feed by the feed roller and generates a pulse-like signal is provided, and the signal from the feed amount detector is used as a printing timing signal to drive the printing unit in the feeding direction of the label. A label detector is provided to detect the leading edge of the label that is sequentially printed and peeled off facing the peeling section, and the feed amount detector is detected based on the leading edge detection signal from the label detector. 1. A label printing device characterized by comprising fixed quantity feeding means for feeding a certain amount of said liner by counting a predetermined number of signals.