JPH0528672B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] This is a paper feed amount misalignment correction method when printing character data on a preprinted form on roll paper. Calculate and determine the amount of correction per line of the form based on the amount of paper feed deviation in the vertical direction (method in which the paper is fed by By configuring the paper to be fed an extra amount by the hit correction amount, high-quality printing processing is possible even when using a form preprinted on roll paper.

[Industrial application field]

The present invention relates to an apparatus for printing character data on a form preprinted on roll paper, and particularly to a method for correcting paper feed amount deviation during character data printing processing.

For example, when printing character data on preprinted paper while advancing line by line, continuous paper is used to track feed, in other words, a belt-like rotating body is provided with a pin, and the paper is aligned with the feed hole of the paper. It was common practice to ensure highly accurate printing by sending the paper.

On the other hand, the track feed method requires feed holes on the paper, and the paper feed mechanism is large and expensive, so the friction feed method is adopted in small and inexpensive devices.

It is expected that a method that can perform high-quality printing using paper preprinted using such a friction feeding method will be put into practical use.

[Conventional technology]

FIG. 4 is a block diagram for explaining the conventional example, and FIG. 5 is a diagram for explaining the paper feeding situation in the conventional example.

Figure 4 shows an overview of the configuration of the dot printer, and its block configuration consists of a control unit (hereinafter referred to as MPU) 1 that controls various processing operations within the dot printer, and a control unit (hereinafter referred to as MPU) 1 that stores various data processed by the dot printer, such as character data. a memory 2 for inputting data and a memory 2 for inputting data and specifying various processing operations within the dot printer using multiple keys.
and a printer control section 4 which sets print processing data and controls the print processing (including friction feed control) of the printer 5 under instructions from the MPU 1, and prints the character data set in the printer control section 4 onto paper. It is configured to include a printer 5 for printing.

In this example, paper is fed by friction feeding and character data stored in the memory 2 is printed. For example, the character data to be printed is "1, 2, 3, 4", " A, B, C,
D'', . . . Note that the symbol a indicates the row, and the symbol b indicates the sending direction.

The MPU 1 sets the character data stored in the memory 2 in the printer control section 4 according to the situation set on the keyboard 3, and instructs the printing process.
The printer control section 4 prints the set character data based on the print processing instruction from the MPU 1 by feeding the paper line by line a and printing as shown in FIG.

[Problem that the invention seeks to solve]

Conventionally, when printing character data on preprinted paper, it was printed using a track feed method that had good line feed accuracy and less paper feed misalignment in the vertical direction (direction of arrow b in Figure 5). It is expensive and the mechanism is large.

On the other hand, when character data is printed on preprinted paper using a dot printer device that uses the above-mentioned friction feed method, which can be configured in a small and inexpensive manner, unevenness in the rollers and roller friction may cause problems. As shown in FIG. 5, the paper feed deviation in the vertical direction b is large, and there is a risk that preprinted paper may protrude from a predetermined frame.

Therefore, it is necessary to align the printing position every time the printing process is performed, which poses a problem in that extra man-hours are required during the printing process.

It has been found from past experience that the amount of deviation in paper feeding due to friction feeding has a certain fixed characteristic value for a single dot printer.

However, due to the addition of variable factors in combination with the paper to be set and the state of preprinting, the amount of paper feed deviation will differ.

[Means for solving problems]

FIG. 1 shows a block diagram illustrating the principle of the invention.

The principle block in Fig. 1 is equipped with the functional blocks 1 to 5 explained in Fig. 4 and a paper feed key that feeds paper at the minimum pitch when pressed once. When the paper feed deviation due to the result is corrected using the paper feed key,
A counting function that counts the number of presses of the paper feed key, a calculation function that calculates the amount of paper feed deviation for the form from the number of presses of the paper feed key, and a calculation function that calculates the deviation correction amount obtained by the calculation function as the total printed line of the form. A feed amount deviation correction means 10 having a deviation amount adjustment function that calculates the per-line correction amount divided by the number and adjusts the deviation amount so that the paper is fed an extra amount by the per-line correction amount for each printed line. has been done.

[Effect]

The amount of correction per line of the form preprinted on the roll paper is calculated and set by the feed amount deviation correction means, and when printing character data on the form, an extra amount of paper is added for each line by the amount of correction per line. By adjusting the feed amount by the feed amount deviation correcting means, high-quality printing processing can be performed without causing paper feed deviation even for a form preprinted on roll paper.

〔Example〕

The gist of the present invention will be specifically explained below with reference to embodiments shown in FIGS. 2 and 3.

FIG. 2 is a block diagram illustrating an embodiment of the present invention, and FIG. 3 is a diagram illustrating a print processing situation in the embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.

The feed amount deviation correcting means 10 in this embodiment shown in FIG. A counting unit 11 that counts the number of presses of the paper feed key, a calculation unit 12 that calculates the vertical deviation correction amount for the form from the counted value, and a calculation unit 12 that calculates the deviation correction amount calculated by the calculation unit 12 in total printing of the form. It is comprised of a shift amount adjusting section 13 that calculates a correction amount per line divided by the number of lines and adjusts the shift amount so that the paper is fed an extra amount by the correction amount per line for each printed line.

In the dot printer device configured as described above, when character data is printed on preprinted roll paper, printing is first performed with a correction amount of "0".

Furthermore, Figure 3 shows the printing situation at that time, and the symbol L
is the length of one form, and the dotted line indicates the boundary between forms (for example, a perforation).

Assume that when printing is performed with the correction amount "0", paper feed deviation occurs as shown in FIG. 3, and the feed amount is insufficient by a length L1. Therefore, the user operates the keyboard 3 and uses the paper feed key (however, it is possible to feed the paper in dot units) to feed the paper by a length L1.

At this time, the counting section 11 counts the number of times the paper feed key is pressed, and the counted value is stored in the calculation section 12 via the MPU 1 at the time the set key is pressed. The calculation section 12 calculates the total amount of deviation and sends it to the amount of deviation adjustment section 13 .

The deviation amount adjustment unit 13 divides the total deviation amount obtained from the calculation unit 12 by the total number of lines of the form obtained from the MPU 1,
The amount of deviation correction for each line is memorized.

Next, when printing the character data stored in the memory 2 on the form under the control of the MPU 1, the amount of deviation correction for each line is set in the printer control unit 4, and the printer control unit 4 The printing process is performed by feeding the paper an extra amount by this amount of misalignment correction.

〔Effect of the invention〕

According to the present invention as described above, even when printing on a form preprinted on roll paper with an apparatus that employs the friction paper feeding method, high quality can be achieved without paper feeding deviation occurring. This has the effect of allowing for more accurate printing processing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram explaining the principle of the present invention.
FIG. 2 is a block diagram explaining an embodiment of the present invention;
FIG. 3 is a diagram illustrating the print processing situation in the embodiment of the present invention, FIG. 4 is a block diagram illustrating the conventional example, and FIG. 5 is a diagram illustrating the paper feeding situation in the conventional example. In the figure, 1 is MPU, 2 is memory, 3 is keyboard, 4 is printer control unit, 5 is printer, 1
0 indicates a feed amount deviation correction means, 11 a counting section, 12 a calculation section, and 13 a deviation amount adjustment section, respectively.

Claims (1)

[Scope of Claims] 1. A printer device that prints character data by sending out a preprinted form on a roll paper line by line using the friction of a roller, which feeds the paper at the minimum pitch with one press. a counting function that counts the number of presses of the paper feed key when the paper feed key is provided, and the sheet is fed in a predetermined line on the form in advance, and the resulting paper feed deviation is corrected by the paper feed key; a calculation function that calculates the paper feed amount of the form by the paper feed key from the number of presses of the paper feed key and calculates a correction amount per line; a memory that stores the correction amount; and a memory that stores the correction amount for each print line. It is equipped with a paper feed amount correction means 10 that feeds the paper an extra amount by the per-line correction amount, and when character data is printed on the form preprinted on roll paper, the per-line correction amount is determined in advance, and the per-line correction amount is calculated in advance. A printer device characterized in that each time one line of character data is printed, paper is fed an extra amount by an amount of correction.