JP2946780B2 - Barcode printer and control method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for printing barcode symbols.

[0002]

2. Description of the Related Art Conventionally, bar code printers are JAN, U
When printing a barcode symbol that requires a check digit such as a PC, one of the following two methods is used. a) It is necessary to input a check digit character following a barcode character from the host computer.

B) Only bar code characters are input from the host computer, and the check digit is calculated and added by the printer.

[0004]

However, in the case of a) in the above-mentioned prior art, there is a problem that the check digit must be calculated on the host computer side. In the case of b), there is a problem that a barcode symbol using a special check digit calculation formula cannot be printed.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a printer capable of printing barcode symbols correctly regardless of whether or not a check digit character is input from a host computer. Is to provide.

[0006]

According to the present invention, there is provided a bar code printer for printing a bar code pattern based on bar code data input from a host computer, wherein a check digit is calculated based on the bar code data. Means for determining whether or not a check digit has been input from the host device based on data input from the host computer, and the determination means has determined that no check digit has been input. In the case, when it is determined that the check digit calculated by the calculating means has a check digit input, the bar code pattern based on the input check digit is bar-coded. Barco based on code data Wherein the printing with de pattern.

[0007]

According to the present invention, the check digit can be calculated and automatically added even when data representing the check digit has not been input.
Therefore, a barcode symbol can be correctly printed regardless of the presence or absence of input of data representing a check digit.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments.

FIG. 1 is a block diagram showing an example of the present invention. 1 is data input means for inputting data, 2 is check digit input detection means for detecting input of data representing a check digit, and 3 is check digit. Is a check digit calculating means, 4 is a pattern creating means for creating a barcode pattern based on a barcode character, 5 is a pattern storage buffer for storing the barcode pattern created by the pattern creating means 4, and 6 is a pattern storage. This is printing means for printing the barcode pattern stored in the buffer 5 as a barcode symbol.

When the input by the data input means 1 is a barcode character, a barcode pattern is created by the pattern creation means 4 based on the data and stored by the pattern storage buffer 5. When data representing a check digit is input, the check digit is not calculated by the check digit calculation means 3 but a bar code pattern representing the check digit is generated by the pattern generation means 4 based on the input data, and a pattern storage buffer is stored. 5 is stored. The pattern of the barcode symbol stored in the pattern storage buffer 5 is finally printed by the printing means 6.

FIG. 2 shows an example of a bar code symbol. A left guide bar 7 indicating the left end, a left bar code character 8 having a data number of n1, a center bar 9, and a data bar having a data number of n2 are shown. , A check digit character 11 indicating a check digit, and a light guide bar 12 indicating a right end.

An embodiment in which the barcode symbol thus configured is printed using the present invention will be described with reference to the flowchart shown in FIG.

When printing the barcode symbol shown in FIG. 2, the minimum necessary data input from the host computer is n1 data representing the left barcode character 8 and the barcode character 10 at the right. n
These are two pieces of data. That is, printing is possible by inputting (n1 + n2) barcode characters.

First, a bar code pattern representing the left guide bar is created by the pattern creating means 4 and stored in the pattern storage buffer 5 (step 1).

Next, n1 pieces of data are input by the data input means 1, a barcode pattern is created by the pattern creation means 4 based on the input data, and stored in the pattern storage buffer 5 (step 2).

Next, a bar code pattern representing the center bar is created by the pattern creating means 4 and stored in the pattern storage buffer 5 (step 3).

Next, n2 pieces of data are input by the data input means 1, a barcode pattern is created by the pattern creation means 4 based on the input data, and stored in the pattern storage buffer 5 (step 4).

Next, data is input by the data input means 1 and the check digit input detection means 2 checks whether or not the input data is data representing a check digit. If the data represents a check digit,
A barcode pattern based on the input data is created by the pattern creation means 4 and stored as a check digit character 11 in the pattern storage buffer 5. If the input data is not data representing a check digit, the check digit is calculated by the check digit calculating means 3 based on the bar code character already input, and a bar code pattern based on the calculated check digit is created. It is created by the means 4 and stored in the pattern storage buffer 5 as the check digit character 11 (step 5).

Next, a bar code pattern representing the light guide bar is created by the pattern creating means 4 and stored in the pattern storage buffer 5 (step 6).

The bar code symbol created and stored by the above processing is printed by the printing means 6 (step 7).

[0021]

As is apparent from the above description, according to the present invention, a barcode symbol can be correctly printed regardless of whether or not data representing a check digit is input. Therefore, when printing a barcode symbol using a general check digit calculation formula, the host computer can omit the calculation of the check digit and the output of data representing the check digit, and the processing contents of the host computer can be reduced. It becomes possible to reduce. When printing a bar code using a special check digit calculation formula, a bar code symbol including the special check digit is printed by outputting a bar code character and data representing the check digit to a printer. be able to.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a diagram showing an example of a barcode symbol.

FIG. 3 is a flowchart showing a process when printing the barcode symbol shown in FIG. 2;

[Explanation of symbols]

 1 data input means 2 check digit input detection means 3 check digit calculation means 4 pattern creation means 5 pattern storage buffer 6 printing means 7 left guide bar 8 left barcode character 9 center bar 10 right barcode character 11 check digit character 12 Light guide bar

Claims (2)

(57) [Claims] 1. A bar code printer for printing a bar code pattern based on bar code data input from a host computer, wherein a check digit is generated based on the bar code data.
Means for calculating , based on data input from the host computer
Te, wherein and means for determining the presence or absence of the input of check digit from the host apparatus, when it is determined that there is no input of the check digit by said determining means was calculated Ri by said calculation means
Check digit by check means
If it is determined that a digit has been entered,
Bars based on each checked digit
A bar code based on the bar code data
A bar code printer characterized by printing with a code pattern . 2. A control method of a bar code printer for printing a bar code pattern based on bar code data input from a host computer, wherein a check digit is generated based on the bar code data.
Calculating , based on data input from the host computer
Te, and a step of determining the presence or absence of the input of check digit from the host device, when the input of the check digit is determined not in the determination process, is calculated have you said calculating step
Check digit in the judgment step.
If it is determined that a digit has been entered,
A check digit is entered and the
Bar code based on the bar code data.
-A bar code printer control method characterized by printing with a code pattern .