JPS59136273A - Label printer - Google Patents

Abstract

PURPOSE:To make reading by bar code scanner impossible by a method in which when switching and setting are made to non-addition mode, the value of modular check characters of a bar code, corresponding to printing data, is changed to a value different from normal value. CONSTITUTION:When addition mode is switched to non-addition mode by a mode switcher 3, CPU1 responds to it, processing corresponding to a program from a program memory 4 for the mode is made and counting by a counting memory 5 is stopped. CPU2 also responds to CPU1, the reading of ROM9 for a character generator is controlled by a program corresponding to the mode of the program memory 8, and the value of modular check character in the bar code corresponding to printing data set in the printing buffer 10 becomes a value different from normal value. Therefore, bar code printed by the label printer for practice can not be read by the bar code scanner and labels become null practically, thus preventing unjust use of the bar code.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a label printer that prints a bar code along with data indicating weight, price, etc.

Technical Background and Problems Jurai has multiple PLUs, and each PLU has memory for the unit price, product name, etc., as well as total memory for the number of bags, weight, price, and the label has weight, unit price, price, product name, etc. There are label printers that print barcodes in addition to processing dates, effective dates, etc. In such label printers, a non-addition mode is set up using a mode changeover switch such as a key switch for operator training, etc., so that the data contents are not added to the memory even if a label is issued. Something exists. However, since the barcode of a label issued in such a mode is normal, if the label is read with a barcode scanner 5, it may be read and registered in the normal state. Therefore,
May be used fraudulently.

OBJECTS OF THE INVENTION An object of the present invention is to provide a label printer that prints a barcode that cannot be read by a barcode scanner on labels issued in a non-additive mode.

SUMMARY OF THE INVENTION The present invention enables barcode scanners to use a barcode scanner by changing the value of the modular check character of the barcode corresponding to printed data to a different value from the regular value when the non-addition mode is set by the mode changeover switch. It is configured to make it impossible to read the information.

Embodiment of the invention First, in FIG. 1, the CPU (1) has a weighing section (2).
, a PLU memo IJ-(5) to which a mode changeover switch (3) as a mode changeover means is connected, a program memory (4) consisting of ROM and RAM, and a function as a total memory in addition to the RAM; A display/key device (6) equipped with keys as a setting section and a CPU 2 (7) for controlling the printer are connected. Connected to this CPU 2 (7) are a program memory (8) consisting of ROM and RAM, a character generator (9) consisting of ROM, and a print buffer 00 consisting of RAM. In addition, the CPU2 (7)
The label detector α, ), Ha, Luss motor (2)
A pulse motor drive 03 for driving the thermal head α→, a common drive αυ for controlling the thermal head α→, and an image signal drive αG are connected.

Next, the printer section will be explained based on FIG.

First, rectangular labels α are affixed at equal intervals to a long mount αη. This mount αno is a-
5 (19), a platen (A) serving as a label feeding section, a peeling plate (C), a roller reno, and then wound up in a winding section (not shown). The upper part of the platen (A) is equipped with a thermal head α that connects to the label 0 and performs printing.
There are chrysanthemums. In addition, since the mount 0η is sharply bent at the part of the peeling plate Q■, the label 08
is peeled off and extruded horizontally, but the peeling plate Q])
A label detector α is provided in close proximity to the label detector α. Further, a pulley (c) is formed at the end of the platen, and this pulley (c) and the pulley (c) of the pulse motor α are formed.
A timing belt (c) is stretched between the timing belt (c) and the timing belt (c).

Next, the structure and operation of the thermal head α→ will be described in the third section.
This will be explained based on the diagram and FIG. First, in the thermal head←ji, 256 heating elements (c) of R1-R256 are arranged in a direction perpendicular to the moving direction of the label 0 sakaki.゜R3
They are grouped into 32 groups such as 2 to R64, . . . and divided into eight groups, COMI to C0M8.

(-1, te, common drive 09 is divided into four categories by four transistors (c), and COMI is C0M8 and COM
I is connected to the heating element (c). Similarly C0M2
is connected to the heating element (c) of C0M7 and C0M2, and C
0M3 is connected to the heating element (c) of C0M6 and C0M3, and C0M4 is connected to the heating element (c) of C0M5 and C0M4.

Further, two data latch/picture signal drive circuits (C) are provided which operate in response to a data latch signal from the CPU 2 (7) and a picture signal drive control signal from the picture signal drive Qd. On one side is C
The heating elements (c) of OMI to C0M4 are connected, and the heating elements (c) of 00M5 to C0M8 are connected to the other.

Therefore, actual printing is performed at the timing shown in FIG. In other words, one line printing cycle is divided into four equal parts and the pulse motor α2e is intermittently fed to perform the line feeding, and each line is fed with COMI.
and C0M8. C0M2 and C0M7. C0M3 and C0
M6. The heating elements (c) of C0M4 and C0M5 are energized.

Next, the operation will be explained based on the flowcharts of FIGS. 5 and 6. First, according to Figure 5, CP
The operation of UI (1) will be explained. After the power is turned on, each connected device is initialized, and the feed amount for controlling the print position and print format on the label αe is transferred to the CPU 2 (7) that controls the printer.

Thereafter, the main routine is entered by scanning the display on the display/key device (6).

In this main routine, data from the weighing section (2) is taken in, the state of the mode changeover switch (3) is read, and modes such as fixed amount issue mode, inspection and settlement mode, setting mode, etc. are set. Also, the key information of the display/key device (6) is taken in and processed.

After this, if it is in the weighing mode, the data in the weighing section (2) is multiplied by the unit price to obtain the price, and when the conditions for issuance of the 'label 08) are set, it is set in the printer) Fkl, and the display/key device (6) is set.
Output and display data such as prices. If print) F is 1, check the status of the printing device, and if printing is OK, set the print data and send it to the CP.
Transfer to U2 (7). Thereafter, print F is reset to o and the process returns to the main routine.

Also, if the mode is the inspection payment mode, determine the inspection payment F, and if it is not rOJ, check the status of the printing device, and if it is OK, set the print data, and send it to CPU2 (7>). Forward.

After that, the inspection settlement F is reset to 0 and the process returns to the main routine. Furthermore, if the mode is the setting mode, each setting task is performed and the process returns to the main routine.

Next, the operation of the CPU 2 (7) that controls the printer will be explained based on FIG. After turning on the power,
Initialize each connected device and turn on the CPU
(1) The receiver receives the feed amount that controls the print format, print position, etc. for the 0 (to) syllabary label, and enters the main routine. In the main routine, first, it is determined whether or not it is paper feeding, and if it is paper feeding, the pulse motor drive α is activated.
1 to rotate the barrel motor pα2 and return to the main routine. At this time, if the paper is not being fed, the CPU
(1) Receive data from. If this data is the amount to be sent, that data is processed and the process returns to the main routine. If this is print data, the data is processed, the character generator (9) performs all the processing, a print pattern is generated on the print buffer α01 and printed, and the process returns to the main routine.

Next, the subroutine will be explained based on FIGS. 7 and 8. First, what is shown in FIG. 7 is a routine for outputting data to the CPU 2 (7) in the measurement/fixed amount issuing mode in FIG. In other words, the mode selector switch (
3), it is checked whether it is addition mode or non-addition mode, and if it is addition mode, addition F is set to 0, data is added to the total memory, and the data is sent to CPU 2 (
7) and return. In addition, in the non-addition mode, after setting the addition F to 1, the data is sent to the CPU 2 (
7) and return.

Next, what is shown in FIG. 8 is the data processing routine in FIG. First, a modular check character calculation is performed. The simular check character is set by simply adding the numerical values of each digit of the data to be printed, and then adding the numerical values further until the first digit of the total value becomes constant. And addition F
If the addition F is 1 (non-addition mode), +1 is added to the modular check character and the process returns. As a result, the modular check becomes virtually impossible, and all labels (08) issued in the non-additive mode become unreadable.

Effects of the Invention According to the present invention, when the addition mode is set by the mode switching means as described above, data and barcodes are printed and the data is totaled in the totalization memory, and in the non-addition mode, the data is totaled. It is not added to memory, and the modular check character for bar 1 codes acts differently from the regular one, so it cannot be read by a bar code scanner, which makes it difficult for the operator to read it. No matter how many labels are issued for purposes such as educational purposes, the labels are essentially invalid and cannot be used fraudulently.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a block diagram, FIG. 2 is a side view of the main parts of the printer section, and FIG. 3 is a circuit diagram of the thermal head shown in relation to a label. FIG. 4 is a timing chart, FIG. 5 is a flowchart showing the operation of the CPU 2, FIG. 6 is a flowchart showing the operation of the CPU 2, FIGS. 7 and 8 are flowcharts of subroutines, and FIG. 9 is a concept of the invention. It is a conceptual diagram.

Claims (1)

[Claims] When a label is printed with data such as weight, price, etc. and a bar code corresponding to this data using a large number of heating elements arranged in a direction perpendicular to the direction of movement of the label, A mode switching means is provided for switching between an addition mode in which data is added to the tally memory and a non-addition mode in which data is not added. A label printer characterized in that a modular check conversion means is provided for converting a character value to a value different from a normal value.