JPS6367174A - Data printing apparatus - Google Patents

Abstract

PURPOSE:To clearly correct the data previously printed and to rapidly start the printing of the next printing data after correction printing, by providing a conversion means for converting actual printing data into an underline code, a processing means for printing an underline as a correction mark and a return means for returning a printing head to the original position before the start of correction. CONSTITUTION:A printing head is moved in front of a printing position. In this state, the printing head is moved from the left to the right on the basis of an underline start code (a)4 and an underline finish code (a)5 and superposed to printing data to print an underline. When this printing processing is finished, the printing head is continuously returned to the position before correction on the basis of the present line information and column information saved in RAM20. For example, when a correction key 1(a) is operated when a printing head 21(a) is present at the position shown by a drawing (a) after printing of characters 'ABC', the printing head 21(a) moves to stop once at the position shown by a drawing (b). Thereafter, the printing head 21(a) moves to return to the original position before the start of correction shown by a drawing (e) and stops.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data printing device using a wire head, a thermal head, or the like as a print head.

[Prior Art] Conventionally, in a type of printing device such as a digi-wheel printer in which type is mounted on a printing stand, a correction tape is provided for correction, and this tape is used to overprint previously printed characters. I try to erase the print and make corrections. However, in a printing device using a wire tod head or a thermal head, it is impossible to make corrections using such a correction tape.

[Problems to be Solved by the Invention] For this reason, with conventional printing devices using wire tod heads or thermal heads, it has not been possible to clearly correct and print printed data once printed.

This invention has been made to solve these problems, and provides a data printing device that can clearly correct previously printed data and can quickly start printing the next print data after correction printing. The purpose is to

[Means for Solving the Problems] The present invention includes a correction data save area for storing previously printed print data and information such as lines and columns separating the print data, a correction key, and a correction key. a data conversion means that saves current print head line and column information in memory when a key is input, and converts actual print data in a correction data save area into an underline code; and a line in the correction data save area;
A correction mark printing processing means for moving the print head to the previous printing position based on column information and printing an underline as a correction mark over the previously printed character based on the converted underline code; A print head return means is provided for returning the print head to its original position before the start of correction based on the current line and column information saved in the memory after printing of a line is completed.

[Function] In the present invention having such a configuration, when the correction key is operated, the current print head line information and column information are saved, and the actual print data of the previous print data stored in the correction data save area is saved. The character data is converted to an underline code, the print head is moved to the previous print position based on the line and column information indicating the previous print position stored in the correction data save area, and the print head is moved in this state. to print an underline over the previously printed character. In other words, an underline is printed as a correction mark. When the underline printing is completed, the print head is moved based on the saved current print head line and column information, and the print head is automatically returned to the position before correction.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a data processing device incorporating a data printing device of the present invention, and a keyboard 1 and a display device 2 are provided on the front side of the device.

Further, a data printing device 3 is housed in the center of this device. This data printing device 3 is provided with a platen 4 around which printing paper is wound, and also houses a printing mechanism in which a wire set dot head is mounted on a carriage. Note that 5 is a knob for manually rotating the platen 4.

The keyboard 1 is particularly provided with a correction key 1a.

FIG. 2 is a circuit block diagram of the data processing device, in which 11 is a main CPU that constitutes the main body of the control unit, and 12 is this main CPU.
A ROM that stores program data for the PU 11 to control each part, a memory 13 that temporarily stores data being processed, a buffer that stores print data and display data, a buffer that stores input data from the keyboard 1. This is a RAM equipped with the following. The main CPU 11
, ROM'12, and RAM13 are connected by a pass line 14.

Further, the main CPU 11 is connected to a display interface 15 and a keyboard controller 1 via a path line 14.
6 and a printing interface 17 are connected.

The display device 2 is connected to the display interface 15, the keyboard 1 is connected to the keyboard controller 16, and the data printing device 3 is connected to the printing interface 17.

The data printing device 3 includes a printing CPU 18 that exchanges information with the main CPU"z, and a printing CPU 18 that exchanges information with the main CPU"z.
18 is a ROM 19 in which program data for controlling various parts and character patterns for printing are stored, a data save area for corrections, a RAM 20 equipped with a memory for saving current information, and a dot print head. The printing mechanism 21 includes a carriage 6, an ink ribbon drive section, a platen drive section, and the like.

When the printing cpuis receives print data from the main CPU 11, it saves the print data in the correction data save area of the RAM 200 and drives the printing mechanism 21 to print out the data.

In this case, the print information received from the main CPU 11, as shown in FIG. 3, consists of print data a and information that separates the print data a, that is, line information b, character type information C1 print pitch information d1 column information e. In addition,
Line information is information on the line on which print data a is printed, character type information C is information on bi-power characters, elite characters, micro characters, etc., printing pitch information d is information on the pitch between printed characters, The column information is information about the column to be printed in the print data a.

Print data a is 418=A as shown in FIG.

42H=B, 43N=C actual print data a1 and ESC
and FF print activation code a2.

When the printing CPU 18 receives the key input information of the correction key 1a from the main CPU 11, it performs the processing shown in FIG. First, line information and column information where the print head is currently located are saved in the RAM 20.

Next, if there is an underline code in the print data, it is deleted. Then, as shown in Fig. 5, the actual print data a
1 is converted into space data a3, and an underline start code a4 and an underline Hiiragi code a5 are inserted before and after it. (Data conversion means) In this state, the print head is moved to the correction printing position based on the line information and column information e in the correction data save area. That is, the print head is moved to the front of the previous print position. In this state, the print head is moved from left to right based on the underline start code a4 and the underline hiragi code a5 to print an underline overlapping the previous print data.

Also, the print head is shifted slightly downward, and conversely, the print head is moved from right to left to print a second underline overlapping the print data. (Correction mark printing processing means) When this printing process is completed, the print head is returned to the position before correction based on the current line information and column information saved in the RAM 20.

(Print head return means) The print head is now ready for the next print.

In this embodiment with such a configuration, for example, if r
The characters ABcj are printed and the print head 21a prints the seventh
When the correction key 1a is operated on the keyboard 1 while in the position shown in (a) in the figure, the print head 21a moves as shown by the dotted arrow and temporarily stops at the position shown in (b) in Figure 7. .

In this state, it moves from left to right as shown by the dotted arrow in the figure, and prints the first underline overlapping the characters rABcJ as shown in FIG. 7(C). Next, the print head 21a is shifted slightly downward and moved from right to left to print the seventh print head.
As shown in (d) of the figure, a second underline is printed over the characters rABCJ. Thus the letters rABcj
A correction mark "=" will be printed over the .

Thereafter, the print head 21a moves as shown by the arrow in the figure, returns to its original position before the start of correction, and stops, as shown in FIG. 7(e).

In this way, when using a wire tod type print head, the correction of the previously printed character can be made clear by using the correction mark "-j" using two underlines.Moreover, the print head 21a can correct the previously printed data. After doing this, it will automatically return to its original position before starting the correction.
When printing the next print data, printing can be started quickly, and the start of the next print does not become troublesome due to print correction.

In the above embodiments, a wire tod type print head was described, but the present invention is not necessarily limited to this, and a thermal type print head may be used.

[Effects of the Invention] As detailed above, the present invention provides a data printing device that can clearly correct the previously printed data, but can quickly start printing the next print data after the corrected printing. It is possible.

[Brief explanation of drawings]

The figures show an embodiment of the invention, and FIG. 1 is a perspective view;
Figure 2 is a block diagram, Figure 3 is a diagram showing the configuration of print information, Figure 4 is a diagram showing the configuration of print data, Figure 5 is a diagram showing print data converted for correction, and Figure 6 is a diagram showing the configuration of print data. The figure is for printing C.
FIG. 7 is a flowchart showing print correction processing by the PU, and is a diagram showing an example of the movement of the print head during correction. 1a... Correction key, 3... Data printing device, 11.
・・Main CPU, 18 ・・Printing CPU, 20・・
-RAM121...Printing mechanism, 21a...Print head.

Claims (1)

[Claims] A data save area for correction that stores the previously printed print data and information such as lines and columns attached to that print data, a correction key, and when the correction key is input, the line and column information of the current print head is saved. data conversion means for saving the actual print data in the correction data save area in a memory and converting the actual print data in the correction data save area into an underline code; a correction mark printing processing means for printing an underline as a correction mark overlapping the previously printed character based on the underline code moved to the position and converted; 1. A data printing apparatus comprising: print head return means for returning said print head to its original position before the start of correction based on current line and column information.