JPS5941275A - Correction of gap between upper and lower halves of vertical double size character for serial printer apparatus - Google Patents

Abstract

PURPOSE:To facilitate the adjustment of the gap between the upper and lower halves of a vertical double size character and obtain an excellent print quality, by controlling the quantity of feeding of a printing paper during the period between the printing of the upper half and that of the lower half. CONSTITUTION:A gap correction system has the circuit 2 which has a microprocessor and a memory means and controls the whole apparatus, the new- paragraph control circuit 4 having an LF motor 6 for driving a paper feed mechanism, and a switch 3 for allowing the control circuit 2 to read externally settable contents. In printing a vertical double size character, the circuit 2 first effects printing of the upper half of the character and then controls the quantity of printing-paper feeding effected by the paper feeding mechanism driven by the LF motor of the circuit 4 on the basis of the set contents read from the switch 3, and thereafter, effects printing of the lower half of the vertical double size character.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a doctor matrix type serial or printer device, and particularly when printing double-height characters divided into an upper half and a lower half. The present invention relates to a method for correcting the gap between 7c and double-height characters by using an external digital switch.

[Conventional technology and problems]

When printing double-height characters in the upper and lower halves of a Tontomatrix serial printer,
The conventional method of matching the gap between the upper and lower halves is
During design, it is common practice to set a fixed line feed amount so that the bottom line of the upper half of double-height characters matches the top line of the lower half. However, such a conventional method has a drawback in that it is not always possible to match the upper half and the lower half with high precision due to the working precision of the paper feeding mechanism, aging, etc. Recently, recent printers are required to have the ability to plot tables using vertical and horizontal ruled lines, and to process drawings such as graphs, and there is a problem in that the vertical directions do not match and if there are gaps, it becomes very difficult to see. .

[Purpose of the invention]

The present invention solves the problem of the queen.

The object of the present invention is to provide a gap correction method for double-height characters that allows easy adjustment of the gap between the upper and lower halves of double-height characters and obtains double-height characters with good print quality. .

[Structure of the invention]

To this end, the gap correction method for double-height characters in the 7-real printer of the present invention divides the double-height characters into an upper half and a lower half, feeds a cut sheet with the upper half printed, and prints the lower half. In the clear printer device that started printing,
A printer partition V section that has a microprocessor and storage means and controls the entire serial printer device, a line feed control section that has an LF motor that drives the paper feed mechanism, and a line feed control section that can be set from outside and the setting contents are transmitted from the printer control section. When printing double-height characters, the printer control unit prints the upper half of the double-height characters, and then prints the upper half of the double-height characters based on the settings read from the digital switch. Paper feed f) of the paper feed mechanism driven by the LF motor of the above-mentioned line feed control unit
This is characterized in that it is configured to control the amount and then print the lower half of double-height characters.

[Embodiments of the invention]

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing one embodiment of the present invention, FIG. 2 is a flow chart showing the processing flow n when printing double-height characters by the control circuit, and FIG. A diagram showing an example of printout of double-width characters.

FIG. 4 is a diagram showing a specific example of adjusting the line feed amount using the gap correction method of the present invention. In the figure, 1
is an interface circuit, 2 is a control circuit, and 3 is a digital circuit. switch, 4 is the LF operation control circuit, 5 is the LF motor
6 is a LF motor, 7 is a RAM, and 8 is a ROM.

In FIG. 1, the control circuit 2 is a control circuit including a 71 processor, &i
7 is a memory used for the print data storage area and the 1Y area; h')-ROM 8 is a control storage in which the '+tilJN program can be stored. The digital switch 3 is used to correct the gap between double-height characters according to the second aspect of the present invention.
The bladder is removed. The LI" (Line Feed) control circuit 4 drives the LF motor 6 via the Lli' motor driver 5, and the control circuit 2 issues instructions for line feed operation and line feed difference. Double-height characters When print data including . is input from the machine body to the interface circuit 1.

The print data is sequentially stored in the RAM 7. After the print data has been stored in the RAM 7, a print command is sent from the computer/machine main body to the control circuit 2 through the interface circuit 1, and the microprocessor controls a printing unit (not shown) to start printing the print data. . When printing double-height characters, the microprocessor reads the contents of the digital switch 3, prints the upper half of the double-height characters, and then
Digital switch 3 read to print the lower half
Specify the amount of line breaks according to the contents of . The LF motor 6 is driven by the LF motor driver 5 by the LF operation control circuit 4 by the specified line feed amount, and the paper is fed.

The flow of processing by the control circuit when printing double-height characters will be explained with reference to diagram #iJ2. When printing of double-height characters is started, the control circuit performs the following processing.

■ Prints the upper half of double-height characters. Next, perform the process (■).

■ Check whether the digital switch for clearance compensation is on.

If No, process ■; if Yes, process ■
Process.

■ Rotate the LF motor. L as line break amount
The number of pulses given to the F motor is nl, and the process (2) is performed in the 0th order.

■ Rotate the LF motor. At this time, the line feed amount is L
Once the number of pulses to be given to the F motor is ¥iη, then process ① is performed.

■ Print the lower half of double-height characters.

With the above steps, printing of one line of double-height characters is completed.

FIG. 3 shows the printout of double-height characters before gap correction and double-height characters after gap correction according to the present invention. In Figure 3, (α) shows the printout of normal characters of 24 x 24 dots, (b) shows the printout of double-height characters without gap correction, and (6) shows the printout of double-height characters with gap correction. This shows the printout of characters. If a gap G is created in the printout of double-height characters as shown in Figure 3 (6), the lower half of the double-height characters can be raised slightly by operating the digital switch. Adjust the line feed amount to
), it is possible to print out double-height characters without gaps G.

FIG. 4 shows a specific example of adjusting the line feed amount. In Figure 4, the bottle diameter of the printer head is 171 mm.
60 inches, 24 pieces. Minimum line break pitch to 1/120
In the case of inches, in order to theoretically match the bottom line of the upper half of the double-height character with the top line of the lower half, K should be 24/160 inches: 18 as shown in Figure 3 (α).
/120 inch (18 pulses) line feed is sufficient, but
If there is a gap, 17/120 (17 pulses)
By changing to a line break of .

In the above explanation, an example was given of gap correction using one digital switch, but by using multiple digital switches, the gap correction width can be prepared in multiple stages, and the gap can be filled in. In addition to correcting the characters, when the upper half and lower half of a double-height character overlap, it can also be corrected to eliminate the overlap.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the gap between the upper half and the lower half of the light when printing double-height characters can be easily adjusted from the outside with a relatively simple configuration by using a digital switch. can do. Therefore, the control section can compensate for the misalignment between the upper half and the lower half of the double-height character that occurs due to backlash in the mechanical section, deterioration due to aging, or other factors.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing one embodiment of the present invention, Fig. 2 is a flowchart showing the flow of processing when printing double-height characters by the control circuit, and Fig. 3 is a diagram showing normal characters of 24 x 24 dots and double-height characters. Figure 4 is a diagram showing an example of character printout, and shows a specific example when the line feed amount is adjusted using the gap correction method of the present invention.
It is a figure which shows an example. 1... Inter-7 ice circuit, 2... Control circuit, 3
...Digital switch, 4...LF operation control circuit, 5...LF motor driver, 6...LF motor, 7...RAM, 8...ROM0 Special fraud applicant: Uzatsuku Electronics Industry Representative Patent Attorney Co., Ltd. Kyotani 4th Department (1 other person) 3I\Il (and λ, N (b) (c) 4 Figures

Claims (1)

[Claims] A clear printer device that divides double-height characters into an upper half and a lower half, prints the upper half, then feeds the paper and prints the lower half.The clear printer device has a microprocessor and a storage means. The printer control unit performs overall control, the line feed control unit has an LF motor that drives the paper feed mechanism, and settings can be made externally! ! The printer control unit includes a digital switch whose settings are read from the printer control unit, and the printer control unit prints the upper half of the double-height characters when printing double-height characters;
Thereafter, based on the settings read from the digital switch, the paper feed amount of the paper feed mechanism driven by the LF motor of the line feed control section is controlled, and then the lower half of the double-height character is printed. A method for correcting gaps between double-height characters in a serial printer device, which is configured as follows.