KR100266171B1 - Left, right margin setting up device of print head - Google Patents

Abstract

PURPOSE: A right and left margin setting device for a printer head is provided to precisely set right and left margins of the printer head according to a paper mounting state by pressing a head conveying key and a margin setting key. CONSTITUTION: A right and left margin setting device for a printer head includes a head conveying key(12A) for conveying a printer head(19) to a desired position, a setting key(12B) for setting right and left margins of the printer head conveyed according to a head conveying key signal, a central processing unit(13) for storing the right and left margins of the printer head set by the head conveying key and the setting key to an EEPROM(14) and controlling the printer head according to the stored right and left margins, and the EEPROM for storing the right and left margins of the printer head, wherein the EEPROM distinguishes the right and left margins from each other with reference to a center of a printing area.

Description

Left and right margin setting device of print head

1 is a block diagram showing the structure of a conventional printer.

Figure 2 is a block diagram showing the structure of the printer of the present invention.

3 is a detailed view showing the left and right margin setting operation of the printer head of the present invention.

* Explanation of symbols for main parts of the drawings

11: data input / output unit 12A: head feed key

12B: Setting Key 13: Central Processing Unit

14: EEPROM

The present invention relates to a left and right anti-backlight setting apparatus of a print head which transfers the print head appropriately and sets left and right margins according to the state of the paper loaded in the printer.

Conventional printers, as shown in FIG. 1, include a central processing unit 1 for controlling each part of the printer, a data input / output unit 2 for exchanging data with a computer, an operation panel for operating the printer, and an LCD ( 3), an EEPROM (4) storing information necessary for the transfer of the print head, a RAM (5) for temporarily reading and storing data at the time of driving the print head, and a ROM (6) storing the printer driving program and character data. And a head motor driver 7 for driving the head transfer motor 8 so that the head 9 mounted on the carriage is transferred, and a head for transferring the head 9 by the drive signal of the head motor driver 7. It consists of a transfer motor 8 and a head drive circuit 10 for driving the transferred head (9).

In the conventional printer configured as described above, as shown in FIG. 1, when the left and right margin setting data of the printer head 9 output from the computer is input to the data input / output unit 2, the CPU 1 detects this. The left and right margins of the print head 9 are set and stored in the EEPROM 4.

Therefore, the central processing unit 1 prints characters while transferring the left and right margins by the printer driving program stored in the ROM 6.

However, in the conventional printer, the central processing unit 1 transfers the print head 9 to set the left and right margins by the left and right margin setting data output from the computer, and is independent of the paper loading state.

Therefore, since the set unit of the left and right margins is based on the character width, there is a problem in that the correct left and right margins cannot be set by the character width.

In order to solve the conventional problems, the present invention sets the left and right margins by appropriately transferring the print head through the head transfer key in the operation panel according to the state of the paper mounted in the printer. The left and right margins set by the setting keys in the operation panel are stored in the EEPROM, and the left and right margins of the paper are set arbitrarily according to the paper state. When described as follows.

First, as shown in FIG. 2, the printer of the present invention is transferred by a data input / output unit 11 for exchanging data with a computer, a head feed key 12A for transferring a print head, and a head feed key signal. A setting key 12B for setting the position of the print head to the left and right margins, an operation panel 12 provided with a head transfer key 12A and a setting key 12B for operating the printer, and each part of the printer A central processing unit (13) for controlling the printer; < RTI ID = 0.0 > EEPROM (14) < / RTI > ROM 16 storing character data, a head feed motor driver 17 for driving the head feed motor 18 so that the printer head 19 mounted on the carriage is conveyed, and the head feed motor driver 17 Print head 19 by signal A head feed motor 18 for transferring the paper, a paper feed motor driver 21 for driving the paper feed motor 20 so that the paper mounted in the printer is conveyed, and a head for driving the conveyed printer head 19. It consists of a drive circuit 22.

The operation and effect of the present invention configured as described above is shown in FIG. 2 and FIG. 3, after the user attaches a paper to the printer to print the computer output data input through the data input / output unit 11, the mounted paper. According to the state, the user arbitrarily transfers the print head 19 to set left and right margins.

That is, when the user transfers the print head 9 to the current position A and sets the left margin of the print head 19 to the desired position B, the user moves the head feed key 12A provided on the operation panel 12. Pressing the central processing unit 13 detects this to drive the head feed motor 18 through the head feed motor drive unit 17.

Therefore, when the print head 19 is moved from the current position (A) to the desired position (B) by the head feed motor 18, the user can set the key 12B at the desired position (B) where the print head (19) is transferred. Press to set the left margin.

Subsequently, in order to set the right margin after the completion of the left margin setting, the printer head 19 is positioned at the constant position C on the right side of the print head 19 with respect to the center of the plate, that is, the center H of the printable area. After the transfer, the right margin is set using the head feed key 12A and the setting key 12B as in the left margin setting.

As described above, when the user loads the paper into the printer to print the data output from the computer, the user presses the head feed key to properly transfer the print head according to the paper loading state, and then presses the setting key to move the printer. By precisely setting the left and right margins of the head, there is an effect of improving the reliability of the product.

Claims (2)

In a printer in which the left and right margins are set according to the paper loading state when the paper is loaded in the printer to receive the data output from the computer and print it on the paper, A head feed key 12A for transferring the print head 19 to a desired position by the user, a set key 12B for setting left and right margins of the printer head 19 fed by the head feed key signal, and Center to store the left and right margins of the print head 19 set by the head transfer key 12A and the setting key 12B in the EEPROM 14, and control the print head 19 according to the stored left and right margins. A left and right margin setting device of a print head comprising a processing device (13) and an EEPROM (14) storing left and right margin data of the set print head (19). The left and right margin setting apparatus of claim 1, wherein the EEPROM (14) distinguishes left and right margins based on the center (H) of the printable area.