JPS6145594Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an authentication printing device for an electronic cash register that is capable of printing a preset number of authentication prints.

(b) Prior art Generally, in electronic cash registers,
Both receipts and journals are printed using roll paper, so when issuing special paper, such as sheet-like receipts exclusively for each store, it is necessary to handwrite them or as shown in Japanese Patent Application Laid-Open No. 52-42343. In order to avoid this problem, slits are formed in the receipt or journal print area of a cash register to print the same content as the receipt or journal print, but in the latter case, it is unnecessary because it can be printed repeatedly. There were cases where people printed on the paper and used it illegally, which was an inconvenience.

(c) Problems that the invention aims to solve This invention solves the above problems and provides an authentication printing device that can print on special paper only a predetermined number of times (hereinafter referred to as authentication printing). It is something.

(d) Measures to solve the problem This proposal compares the first memory in which the number of authentication prints is preset, the second memory that counts the number of authentication prints, and the values in the first and second memories. It consists of a comparison circuit that performs the following operations, and a gate circuit that controls printing commands to the printer based on the output of the comparison circuit.

(E) Effect Since the present invention is configured as described above, when the count value in the second memory reaches the number of authentication prints set in the first memory, the gate circuit closes due to the output of the comparison circuit and a print command is issued to the printer. In order to block this, authentication printing exceeding a preset number of times is prohibited.

(f) Examples Examples of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an electronic cash register showing one embodiment of the present invention. In the figure, 1 is the keyboard, which has an authentication print key, numeric keys, product department keys, transaction keys, function keys, and mode keys with the following states: registration (R), inspection (X), payment (Z), and preset (PS). It inputs a key scan signal from the control circuit 2 and outputs the press of a key or the state of a mode key as a key signal.
The control circuit 2 reads the program from the program memory 3 in response to key signals from the keyboard 1, sets numbers in the first register 41, transfers data between the first and second registers 41 and 42, performs calculations, and prints. , performs tasks such as data storage.

The first and second registers 41 and 42 are, for example, 8-digit registers, and the contents of the first register 41 are output to the display circuit 5 and displayed, and are also output to the data memory 6 via the gate (G ₁ ). Ru. It is also transferred to the second register 42 via the gate (G ₂ ) and data line (DL).

The data memory 6 has a product category memory, a transaction memory, and a total memory corresponding to the product category keys and transaction keys of the keyboard 1, and each memory is selected by the first address register 71, and each Each digit of the memory is specified by the second address register 72 and read out to the data line (DL) or read out to the data line (DL).
written from. The data line (DL) is also connected to the first and second registers 41 and 42 and the print instruction circuit 8 via gates (G _{1 and} G ₂ ), and is supplied with the output of the data memory 6.

Reference numeral 9 denotes a printer, which prints the contents of the first register 41 when a print command from the control circuit 2 is introduced via the print instruction circuit 8. In the case of authentication printing, since the authentication printing key is pressed a predetermined number of times, the contents of the first register 41 are printed each time. Although the printer 9 prints by inserting a sheet of paper from the left side, the present invention is not limited to this, and a conventional type of receipt or journal printer can also be used.

In the above configuration, when registering, keyboard 1
With the mode key set to registration (R), register processing such as addition to the data memory 6 is performed using the numeric keys and product department keys. To set the number of authentication prints in advance, set the mode key in the preset (PS) state, set the number, and then press a function key, such as a non-addition key, to store it in the memory in the print instruction circuit 8.

FIG. 2 is a detailed block diagram of the print instruction circuit 8. In the figure, reference numeral 81 denotes a first memory, which, _like the second memory ₈₂ , consists of, for example, a two-digit register. memorize the contents of The gates (G ₁ ) (G ₃ ) are opened by generating an output from the control circuit 2 using the non-addition key when the mode key is preset (PS). After writing, register the mode key (R)
I will return it to.

When the customer payment is completed using the cash key or the like at the time of registration, a reset signal is applied from the control circuit 2 to the reset terminal (RS) of the second memory 82, and the second memory 82 is cleared. After that, when the authentication key is pressed, it is transmitted to the AND gate (AND), and when the other input of the AND gate (AND) is applied via the inverter (INV), an output is generated. This output is given to the printer 9 as a print command.

The input of the inverter (INV) is connected to a comparator circuit 83, which compares the contents of the first and second memories 81 and 82, and when the contents match, generates an output to the inverter (INV). , as a result the AND gate (AND) is closed. Usually the second
The memory 82 stores "02", which is the same as the content "02" in the first memory 81 (corresponding to double authentication printing) due to the previous authentication printing, and the comparison circuit 82 considers it to be a match, and the inverter The output that closes the AND gate (AND) is occurring through (INV).

Reference numeral 84 denotes an adder, which adds "1" to the second memory 82 each time printing is completed during authentication printing. Therefore, if authentication printing is performed twice, the second memory 82
becomes “02”, and the first and second memories 81, 82
Since the contents match and the output of the comparison circuit 83 is generated, the AND gate (AND) is closed by the inverter (INV) and subsequent printing is prohibited.

After that, when the payment of other customers is completed, the second memory 82 is reset, the output of the comparison circuit 83 disappears, and the AND gate (AND) is opened by the inverter (INV), so that authentication printing becomes possible. .

FIG. 3 is a block diagram showing another example of the print instruction circuit 8, which is different from FIG. 2 (the same reference numerals are used for the same parts).
The difference is that a subtracter 85 is used instead of an adder 84. In operation, the gate (G ₄ ) is opened by the customer's payment, the contents of the first memory 81 are transferred to the second memory 82, and the AND gate (AND) is opened depending on the contents, and printing is possible. Become. Each time printing ends, a signal indicating the end of printing is given to the subtractor 85, so the content of the second memory 82 is subtracted. For example, if the content is "02", it becomes "00" by two authentication prints, and as a result, the and The gate (AND) is closed and further printing is prohibited.

(g) Effects of the invention As described above, the present invention provides an authentication key on the keyboard, stores the number of authentication prints in advance in the first memory, counts the number of authentication prints after payment in the second memory, and stores the number of authentication prints in the second memory. This feature is characterized in that printing is performed a predetermined number of times in the first memory based on the count output of the second memory, and it is possible to accurately perform authentication printing a predetermined number of times with a simple configuration.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an electronic cash register showing one embodiment of the present invention, Fig. 2 is a block diagram of the print instruction circuit of Fig. 1, and Fig. 3 is a block diagram showing another embodiment of Fig. 2. It is a diagram. In the figure, 1 is the keyboard, 2 is the control circuit,
6 is a data memory, 8 is a print instruction circuit, 9 is a printer, 81 is a first memory, 82 is a second memory, 83 is a comparison circuit, 84 is an adder, and 85 is a subtracter.

Claims (1)

[Scope of utility model registration request] An electronic cash register that has numerical keys and transaction-specific keys and registers transactions includes an authentication printing key that commands authentication printing, a first memory in which the number of authentication printing is preset, and authentication after payment. It consists of a second memory that counts the number of prints, a comparison circuit that compares the values in the first and second memories, and a gate circuit that controls the supply of the authentication print key signal to the printer based on the output of the comparison circuit. Features: Authentication printing device for electronic cash register.