KR100241549B1 - Spool motor on time control method of ecr - Google Patents

Abstract

The present invention provides a method for controlling the spool motor on time of a cash register which automatically increases the on-time of the spool motor winding the audit paper according to the amount of the audit paper to improve the printing performance and to suppress the occurrence of jams. It is about.

The spool motor on-time control method of the cash register of the present invention includes a spool in which a transaction printed sheet is wound and stored, and a spool motor for rotating the spool, wherein the spool is printed every time a line of printing is completed. A method of controlling a spool motor of a cash register configured to wind a paper on the spool by driving a motor, the method comprising: clearing a print count counter each time a sheet is replaced and updating the on-time of the spool motor to an initial value; And increasing the print count counter by one for every print job and increasing the on-time of the spool motor by a predetermined time whenever the counted print count exceeds a predetermined reference value. It features.

Description

Spool motor on time control method of cash register

The present invention relates to a method for controlling the spool motor on time of a cash register, and in particular, by automatically increasing the on time of the spool motor winding the audit paper according to the amount of the audit paper, thereby suppressing the occurrence of jams in addition to improving printing performance. The present invention relates to a spool motor on-time control method of a cash register.

In general, a cash register is a device that processes a variety of data associated with the sale of goods to inform the user of the results so as to facilitate information management. Such a cash register uses a printer to issue a receipt to a customer, and mainly uses a dot printer.

On the other hand, in order to be able to refer to or confirm the transaction details later, the receipt sheet is placed behind the receipt sheet, and the transaction details are printed (the page is also printed on the inspection sheet by the force of the head pin). The audit paper is stored in a spool.

1 is a side view schematically showing the configuration of a printer of a general cash register. As shown in Fig. 1, a printer of a general cash register includes a printer head 1 having a head pin for printing, a paper roll 2 on which a receipt paper 2a and an audit paper 2b are stacked. The support roller 4, the transfer roller 5, and the paper roll 2, which transfer the receipt paper 2a and the audit paper 2b necessary for printing by one line, are wound on the upper side of the paper roll. Consists of a spool 6 and a drive roller 8 for rotating the spool 6.

In the above configuration, the support roller 4 is fixed to allow free rotation. The feed roller 5 is made of rubber and is rotated by a driving means not shown while being in close contact with the support roller 4. Then, since a large frictional force acts between these support rollers 4 and the transfer rollers 5, only the necessary amount of paper 2a, 2b is fed upward.

On the other hand, since the spool drum 6a is formed at one end of the spool 6, the spool drum 6b is freely mounted on the driving roller 8, so that the audit paper 2b is used only while the feed roller 5 is rotating. Spool and the spool 6 does not rotate even if the spool motor shaft 7 rotates while the feed roller 5 does not rotate, because the driving roller 8 slides on the spool drum 6b. .

In the printer of the conventional cash register as described above, as the weight of the paper wound on the spool 6 (mainly determined by the degree of the winding of the paper) increases, the load on the spool motor is increased. In view of this, the heavier the paper wound on the spool (6), the longer the on-time of the spool motor should be appropriately increased. Conventionally, a single value is selected in a hardware or software manner according to the total weight of the paper to drive the spool motor. Has come.

However, since the length of the paper required by the buyer is so diverse, there is a limit to matching it with a single on-time value. If the amount of the wound is small, the paper is pulled hard, so there is a problem that the print is bent. On the contrary, when the amount of the winding is large, the paper is loosely pulled, and thus a gap is formed between the receipt paper and the audit paper, causing a jam.

The present invention has been made to solve the above-mentioned problems, by automatically increasing the on-time of the spool motor winding the audit paper in accordance with the amount of the winding of the audit paper to improve the printing performance in addition to suppress the occurrence of jams Its purpose is to provide a method for controlling the spool motor on time of a cash register.

The spool motor on-time control method of the cash register of the present invention for achieving the above object is provided with a spool on which the paper on which the transaction details are printed is wound and stored, and a spool motor for rotating the spool, for every one line of printing. In the spool motor control method of the cash register which drives the spool motor to wind the paper on the spool every time the spool motor is completed, the print count counter is cleared every time the paper is replaced, and the on-time of the spool motor is cleared. Updating to an initial value; And increasing the print count counter by one for every print job and increasing the on-time of the spool motor by a predetermined time whenever the counted print count exceeds a predetermined reference value. It features.

1 is a side view schematically showing the configuration of a printer of a general cash register;

2 is an electrical block diagram of a cash register to which the spool motor on time control method of the present invention is applied;

3 is a flowchart for explaining a spool motor on-time control method of the cash register of the present invention.

* Explanation of symbols for main parts of the drawings

1: print head, 2: paper roll,

2a: receipt paper, 2b: thank you paper,

4: support roller, 5: feed roller,

6: spool, 6a: spool drum,

7: spool motor shaft, 8: drive roller,

10: central processing unit, 16: paper exhaustion detection unit,

22: printer,

24: ram, 26: rom,

28: spool motor drive, 30: spool motor,

32: display unit, 34: buzzer drive unit

Hereinafter, a spool motor on time control method of a cash register according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is an electrical block diagram of a cash register to which the spool motor on time control method of the present invention is applied. As shown in FIG. 2, the cash register according to the present invention kisses the key input unit 12 and the key input unit 12 generating various key codes for mode designation and money registration, and according to the received key code. The central processing unit 10 for designating the mode of the register and performing various functions in the designated mode, the barcode input unit 14 for reading barcode information engraved on the product, and the paper exhaustion detection unit 16 for detecting whether the paper is exhausted. ), A drawer driver 20 for releasing the binding force of the drawer in the case of a predetermined key operation, a printer 22 for driving the print head 1 under the control of the central processing unit 10 to perform printing, and a user setting A program for operating various systems, including a RAM 24 for storing a number of data generated during a program or a transaction, for example, a print count N, and a spool motor on-time control program according to the present invention. ROM 26 stored therein, spool motor 30 for winding audit paper 2b, spool motor drive unit 28 for driving it, display unit 32 for displaying various information related to transactions, and various types of cash registers. It includes a buzzer 34 that audibly informs the operating state.

Hereinafter, the spool motor on time control method of the cash register of the present invention will be described in detail.

3 is a flowchart for explaining a spool motor on-time control method of the cash register of the present invention. As shown in Fig. 3, in step S10, the central processing unit 10 determines whether there is a print request, for example, a request for issuing a receipt. If there is a print request in step S10, the flow advances to step S12 to determine whether the paper is exhausted based on a signal provided from the paper exhaustion detecting unit 16. When the paper is exhausted in step S12, the process proceeds to step S14 to control the buzzer driver 34 to generate an alarm. Next, in step S16, the print count N counter is cleared, and in step S18, the on-time of the spool motor 30 is reduced to an initial value a (ms), and then the process returns to step S12.

In this way, if there is a print request in a state where the paper roll 2 is replaced with a new one, it is determined in step S20 whether the print count N has reached a predetermined first reference value. Here, the first reference value A and the second to fourth reference values B to D described later can experimentally obtain the average sheet consumption amount at the time of one printing, and can be set appropriately based on this. If the number of prints in step S20 does not reach the first reference value A, the flow advances to step S28 to drive the spool motor 30 at the on time determined by the initial value a (ms). Similarly, in steps S22 to S26, it is determined in which range the current number of prints N falls.

In steps S32, S36, S40, and S44, the spool motor is driven with an on time uniquely determined according to the range of the print number N in question. Here, assuming that the first reference value (A) is 2500 times, the second reference value (B) is 5000 times, the third reference value (C) is 7500 times, and the fourth reference value (D) is 9000 times. On the spool motor 30, a is 20 (ms), b is 25 (ms), c is 30 (ms), d is 35 (ms), and e can be set to 40 (ms). That is, as the number of prints N increases, the on-time value of the spool motor is appropriately increased.

In total, the on-time value of the spool motor 30 is maintained at 20 (ms) while the current number of prints (N) is less than 2500 times, and is maintained at 25 (ms) for more than 2500 times and less than 500 times. It is maintained at 30 (ms) for at least 7500 times, at 35 (ms) for at least 7500 and less than 9000 times, and at 40 (ms) for at least 9000 times.

In steps S30, S34, S38, S42, and S46, it is determined whether the printing has finished, i.e., printing to the last line, and if not, the steps S14 until the end. Will repeat.

When the printing to the last line is finished in steps S30, S34, S38, S42 and S46, the flow advances to step S48 to increase the print count N counter by one. After that, the process returns to step S10.

The method for controlling the spool motor on time of the cash register of the present invention is not limited to the above-described embodiments, and can be modified in various ways within the scope of the technical idea of the present invention. For example, in the above-described embodiment, the on-time of the spool motor has been increased by dividing the setting range of the number of prints into five stages, but it can be subdivided according to the maximum length of the paper that can be employed. In other words, if the program is designed in advance by predicting the maximum length of the sheet that can be employed, the on-time of the spool motor can be accurately controlled even if the length of the sheet being employed does not reach the maximum length.

According to the spool motor on-time control method of the cash register of the present invention as described above, when the paper of various lengths is adopted by automatically increasing the on-time of the spool motor winding the audit paper in accordance with the amount of the winding of the audit paper Even without additional design changes or program changes, it is possible to maintain uniform printing performance and suppress jams.

Claims (1)

And a spool motor for rotating the spool, in which the paper on which the transaction details are printed is stored, and the spool motor for rotating the spool, and the money to drive the spool motor to wind the paper on the spool every one line of printing is completed. In the spool motor control method of the register, Clearing a print count counter each time a sheet is replaced and updating the on-time of the spool motor to an initial value; Incrementing the print count counter by 1 for every print job; and And increasing the on-time of the spool motor by a predetermined time every time the counted number of prints exceeds a predetermined reference value, and driving the spool motor on time of the cash register.

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