JPS5940632B2 - 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/0 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/0 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 to the detector 9 via a label detection AMP 18 having a variable resistor 17.

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 Db' is at the upper level, the paper feed controller 16 outputs the signal C.
becomes L level, stops the motor 6, and CP
The prohibition order in U13 is canceled. The detector 9 detects the light transmittance of the backing paper 1 and the label 2, and this transmittance is different from the light transmittance of the backing paper 1 as shown in FIG. 2b.
When only, when mount 1 and label 2 overlap,
There are three types when the printed part 20 of the label 2 is also transmitted.

Specifically, signal B is generated at the position of only mount 1, but this detects the difference in light intensity when only mount 1 and mount 1 and label 2 are overlapped, so the next There are problems like this. 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. Furthermore, as described above, if the label 2 has a printed part 20 containing the store name, etc., the transmittance of this part will be low, so there will be a large difference from the part of the label 2, 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, but since the signal B from the detector 9 also serves as the operating standard for the printer 4, it is difficult to determine the optimal position. There is also the problem that printing must be performed multiple times, and the label 2 is wasted. Furthermore, since the conventional printer 4 must print one line in the direction perpendicular to the feeding direction of the label 2, the number of digits in the printer 4 is large, and the printing format must be changed between single-stage printing and two-stage printing. It is not possible to make significant changes just by switching.

SUMMARY OF THE INVENTION An object of the present invention is to provide a label printing device that is capable of printing sequentially in the label feeding direction, that allows easy switching of printing formats, and that allows simple label feeding control.

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 leading 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 label 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 by a motor 6 consisting of an induction motor and a belt 23.
A slit detector 27 for detecting the slit 25 is provided facing the slit plate 26. The label detector 27 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.

The paper feed controller 29 is connected to a feed amount setting device 30, such as a digital switch, which is a feed amount setting section, and is also connected to the slit detector 27 via the slit detection AMP 3l. Therefore, when the label 2 is not present in the label detector 22, the signal B is at the H level, but when the signal B is at the H level, the CPU
When signal A is generated from side 3, signal D (H level) is generated from paper feed controller 29, which operates motor 6 to feed mount 1 and also serves as a prohibition signal for parts that should not operate during paper feeding. Give signal D to CPU13.

When the motor 6 starts, the rotational speed of the slit plate 26 is low due to the inertia of each 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 about 3 KHz, and the LED 32 periodically emits pulsed light, and the conversion circuit 34 converts the pulsed output of the phototransistor 33 into DC H, . Convert to L level. i.e. label 2
When label 2 does not exist, the output is H level, and when label 2 exists, the output is L level. The purpose of using pulsed light emission in this way is to prevent the influence of ambient light and to
This is to increase reliability by intensifying the light from the LED 32 with a narrow pulse since the phototransistor 33 is located far away from the phototransistor 33.

Therefore, the conversion circuit 34 connects the I/O port 14 and the 0R
The 0R gate 38 is connected to a 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. These feed setting devices 30 consist of three setting devices 30a, 30b, and 30c labeled A, B, and C, and each has an AND gate 39a and an 0R gate 39b.
It is connected to the down counter 39 via. A print format selection switch 39d having three contacts A, B, and C is connected to the input side of the three AND gates 39a through three inverters 39c. An inverter 40 is connected to the input side of the 0R gate 38, and the I/O port 14 and the output Q of the flip-flop 41 are connected to the input side of the inverter 40. This flip-flop 41 is I
/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 is composed of an LED 43 and a phototransistor 44, and this phototransistor 44 is connected to a waveform shaping circuit 45.
The differential circuit 46 is connected to the down counter 39 and the 1/O port 14, which differentiates the front and rear edges of the pulse to generate twice the number of slits 25. There is. Further, the differentiation circuit 46
is connected to a run detector 47 for overrun detection, and this overrun detector 47 is connected to I/0 port 1.
Connected to 4. Further, a print controller 48 is connected between the 1/O port 14 and the printer 4.

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 down counter 39 selects the feed rate set by the print format selection switch 39d. Load the contents of the amount setter 30.

Of course, what is the content of down counter 39?
Even if it is, it is loaded when the output of the 0R gate 38 becomes H level, so it can also be considered as a preset. When a feed signal is output from the I/O 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
OV is applied 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, causing a pulse to be generated from the lift-off transistor 44, and this pulse is sent as a clock signal to the down counter 39 and the /O port 14. given to. 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 clock signal from the phototransistor 44 is supplied to the I/0 port 14, a print command is given to the printer 4 by dividing this clock signal or by dividing the frequency of 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 low 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 47 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 this way, the label 2 is printed as shown in FIG. 10 and stopped at a predetermined position after printing, and this state is shown in FIG. 11 as a timing chart of the signal system.

That is, when the FEED signal is output, the flip-flop 41
is set, and as a result, the motor 6 starts rotating and a feed amount signal C is generated. The period of this feed amount signal C is not constant at first, but becomes constant after a while. However, since the feed amount signal C becomes a printing timing signal regardless of its cycle, the feed amount signal C is
One character is printed each time. At first, the label 2 does not reach the position of the label detector 22. Therefore, when the label 2 feed progresses with printing and the leading edge 21 is detected by the label detector 22, the leading edge signal B becomes L.
level, and the load on the down counter 39 is released. When the load is released, the contents of the down counter 39 are subtracted with the generation of the feed amount signal C, and when the contents become zero, a flip-flop 41 reset signal is generated, the flip-flop 41 is reset, and the motor 6 is stopped. Therefore, it is preferable that there are multiple types of print formats for the labels 2 to be issued. For example, if three types of print formats are required as shown in FIG. 3
Define the contents of 0c.

In other words, the stationary position of the label 2 must be determined so that it can be pulled out by hand after being peeled off, but the leading edge 2 must be determined by taking into consideration conditions such as the label 2's adhesion interval and the number of printed characters.
1 Set the feed amount after detection. Therefore, the print format selection switch 39d is changed depending on the print format to be obtained. Next, from Figure 13 to Figure 1
The operation routine of the device will be explained based on FIG.

First, the RAM contains unit price, weight, price, code, date, print counter, print address, and feed rate setting device 30.
SWゞAfa, SWXXA″B, SWゞB2a, SW in which data corresponding to the contents of a, 30b, 30c are stored
Each column of ゞB''B. SWゞC''A, SWゞC''b is provided.As shown in Fig. 13, when the device starts, the weight of the measuring section 11 is taken in and the weight is calculated. Multiply the contents of the preset unit price RAM by the contents of the weight RAM, and put it into the price RAM, and calculate the unit price R.
The contents of AM, weight RAM, and price RAM are displayed at corresponding positions on a display section (not shown), and manual and automatic changeover switches, etc., are set, ie, checked to see if they are keyed in. When this key-in is performed, a check is made to see if the print key has been pressed, and if the print key is pressed, it is either printing in progress or the weight is 107.
If the above conditions are met, the condition of whether or not label 2 is present in the label detector 22 is checked one after another, and if this condition is not met, the process returns to step 8. If the condition is met, the overrun input is taken in and the overrun is detected. If it is inside, just wait,
It reaches 8 when there is no overrun. From step 8 onwards, the routine shown in FIG. 16 is followed. That is, SW
ゞA//0N, SWゞBION are checked in sequence, but these are contacts A and B of the print format selection switch 39d.
, C is checked to see which one is ON.

However, if it is connected to contact A, RAMf)
Enter the contents of the SWSA″a column into the print counter and press SW
ゞ Enter the contents of the A〃b columns into the print address. FEEDONlFEEDOFF indicates that a pulse-like FEED signal as shown in Fig. 11 is output, and as a result, the data specified by the print address is transmitted at the rising edge of the H of the feed amount signal C after the L of the feed amount signal C. is input to the print controller 48 and printed. Next, the print address is decremented by 1, and if the content of the print counter is not zero, the print counter is decremented by 1 and the feed amount signal C becomes L.
Return to the check position and cycle. In this way, the unit price and other data are sequentially printed, and when the print counter reaches zero, it returns to 8. Such control is performed only for printing, and control for feeding the label 2 is performed as described above. Next, another embodiment of the present invention will be described based on FIGS. 16 to 18.

In this embodiment, the feed rate is controlled by the CPU 13, and the feed rate setter 30 in the previous embodiment is not provided, but it is directly connected to the I/0 port 14 of the down counter 39, and stored in the RAM by a preset button (not shown). It is designed to be preset. Therefore, RAM has S
WゞA''C, SWゞB''C, SWゞC''c columns are provided.

Further, the print format selection switch 39d is directly connected to the I/O port 14. Therefore, in the flowchart shown in FIG. 17, SWゞA''C, SWゞB''C, SWゞCI! The rest is the same as that shown in FIG. 14, except that a process for outputting each content of c to the down counter 39 is added.

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 the required number of characters, and a label detector detects the leading edge of the peeled label, and from the time of detection, the signal from the feed amount detector is counted and the number reaches a predetermined number. Since the feed is stopped when the label is reached, it is possible to accurately determine the position of the label after peeling, and furthermore, by switching with the print format selection switch, it is possible to easily obtain labels with different print formats. It has the following effects.

[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 an embodiment of the present invention, Fig. 6 is a rear view of the feed roller portion, Fig. 7 is a block diagram, Fig. 8 is a timing chart, Fig. 9 is a Figure 10 is a plan view showing the correspondence between label print formats and signals, Figure 11 is a timing chart, and Figures 12A, b, and c are label diagrams showing various print formats. 13 and 14 are flowcharts, FIG. 15 is a RAM map, FIG. 16 is a block diagram showing another embodiment of the present invention, FIG. 17 is a flowchart, and FIG. 18 is a RAM map. It is. 1...Paper, 2...Label, 4...
...Printer (printing part), 5...Peeling plate (peeling part), 6...Motor (drive part), 7...
...Feed roller, 22...Label detector, 27
・・・・・・Slit detector (feed amount detector), 39・
...Down counter, 39d...Print format selection switch.

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 printing format selection switch is provided for sequentially printing and selecting a printing form based on a plurality of printing formats, and a label detector is provided for detecting the leading edge of the peeled label facing the peeling section. The present invention is characterized by further comprising quantitative feeding means for feeding the liner by a predetermined amount by counting the number of signals from the feeding amount detector corresponding to the selected print format based on the leading edge detection signal from the label detector. label printing equipment.