JPS6027546A - Recorder - Google Patents

Abstract

PURPOSE:To reduce faults by drawing a line with specified dots with limited frequency of being used for recording characters or the like in a recording element to average the use frequency of dots. CONSTITUTION:After the printing of 30 letters of English sentences on one line, a print head is moved to the desired letter position and prints an underline below words printed from the 5th to 10th letter and then, an underline key K3 is depressed. At the step 1B YES is comfirmed and at the step 1C, a judgment is made to determine whether a paper is fed so as to draw the underline at the 16th dot of a recording head. In this case, advancing to the step 1D, a paper feed signal is provided to a motor drive MD for the head to drive the 16th dot generating heat at 1F while it moves by 20 dots to prit the underline below characters at the 5th letter and then, after a return to the step 1A, the depression of the subsequent key is awaited.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a recording device for recording characters and the like using a plurality of dots.

Prior Art Among printers used as output devices for electronic devices, dot printers that record characters, etc. by combining m vertical dots and n horizontal dots are, for example, thermal dot recording methods,
It is known as a wire dot recording method, an inkjet recording method, etc. However, in these dot printers, when printing characters, lines, etc., each dot has a different frequency of use, and the dots that are used more frequently tend to break down. In addition, in such dot blinks, in addition to characters such as underlines to make sentences stand out and 37 / lines in tables etc.
There are many occasions when lines are printed, and the frequency of use of those dots becomes even higher, which can lead to malfunctions.

OBJECTS Accordingly, the present invention aims to improve the above-mentioned drawbacks, to average out the frequency of use of each dot, to reduce failures of the recording device 6, and to extend its life.

Description of examples An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1A to 1H are examples of font charts for uppercase and lowercase letters of the alphabet. In the figure, one letter of the alphabet is designed to fit within 16 vertical (M) dots and 20 horizontal (N) dots, and the recording head, which has one row of 16 vertical dots, is moved horizontally 20 times. Figure 2 shows the frequency of use of uppercase letters (Figure A) and lowercase letters (BIN) of the 16 vertical dots based on the printing font table in Figure 1. It is something. In p52 diagram.

Column 84 shows the number of times dots 1 to 6 are used.

For example, the 16th dot of a capital letter is 4 times, which is rQJ.
It can be seen that it is used in Note that in the total column, rnJ rmJ omits the exact number, indicating that a large number is used. Therefore, the sum of uppercase and lowercase letters is 1, 2, 3 for dots.
．． x5. i6 is o.

0, 4, 24, and 37, and it can be seen that they are used less frequently than other dots. Dots 1 and 2 are rQJ
Despite this, the recording dots are placed in areas that are not attached to Figure 1, but are actually used for accent marks placed above alphabets, etc. However, even taking these into consideration,
．． 2 is used less frequently. As you can see from this figure, dots 1, 2, 3, 15, and 16 are used less frequently, so if you use one or more of these dots when undergrounding, you can equalize the number of times each dot is used. become. In this embodiment, an example in which the 16th dot is used for underground printing will be explained.

FIG. 5 is a perspective view showing a dot printer to which the present invention is applied. 1 is a platen around which a recording paper 3, for example thermal paper, is wound; this platen 1 can move the recording paper 3 in the direction of arrow F or in the opposite direction of arrow F by the forward or reverse rotation of the motor 2; This motor consists of a pulse monitor, 1
By applying a pulse, the platen is rotated so that the recording paper moves by an amount corresponding to one dot of the recording element. 4 is a rail provided parallel to the platen L, and on this rail 4 is a thermal head 6 in which 16 heat generating elements are vertically arranged.
A carriage 5 is provided so as to be slidable while being fixed thereto.

Of course, other types of heads such as wire dots or ink jet heads may be used as the recording head. This rail 4 is rotated in the direction of arrow E by driving the plunger 7, and the contact between the thermal head 6 and the recording paper 3 is released. This carriage S has Boo 98-1°8-
A wire 9 wound between the two is fixed, and the pulley 8
-2 is rotated in the forward or reverse direction with the motor 1O to move in the direction of arrow G or counter-G. A drive line 11 extends from the carriage 5, and by applying a recording signal to this drive line 11, the heat generating element of the thermal head 6 is driven to generate heat.

FIG. 3 is a block diagram showing the circuit configuration of this embodiment.

The central processing unit CPU, which controls the entire system, has a group of letters K, used for inputting alphabets, etc.
l, 2 for the shift key to specify the character that requires an underline and move the print head, 3 for the underline key to print an underline under the character with the print head, etc., etc. for carriage return, printer ON-OFF, etc. 4 in a group of function keys that give instructions.
MD1. is a motor driver to which each key is connected, and processes various signals depending on whether each key is pressed to feed the paper of the printer PR, move the carriage, etc. The MD2 sends a processing signal to the head driver HD which controls which heating element is used for printing, and causes the printer PR to print characters and Anglines.

Next, after printing an English sentence of 30 digits per line using the character input group Kl, the operation after carriage return to print an angle line under the word printed in 10 digits from the 5th fold [1] The method will be explained based on the flowchart of FIG. 4 as an example.

When 2 is pressed on the shift key in step IA, it is determined in IB whether or not an underground key has been pressed.Since the answer is No, the process proceeds to step 2A, which determines whether it is the shift key.If YES, the process proceeds to 2B, and the printer is activated. Move the head in the opposite direction of the arrow G by one digit and wait for the next key press. Repeat the above routine by repeatedly pressing the shift key until the printer head moves below the word for which you wish to underline (in this case the 5th fold). After the print head has moved to the desired digit 4, press 3 on the underline key. YES in step 1B, and in step 1C, the contents of the paper feed determination flip-flop PF are determined to check whether or not the paper has been fed so that the underline can be printed at the 16th dot of the recording head. In this case, since the paper has not been fed yet, the flip-flop PF is in a reset state, and the result is YES, and the process proceeds to step 1D, where a paper feed signal is given to the motor driver MD, and the motor 2 is driven to feed the paper by an amount equivalent to 2 dots. Set the paper feed flip-flop PF in IE, drive the development heat to move the 16th dot by 20 dots in IF, print an underline under the character on the 5th fold, and proceed to step IA.
Go back and wait for the next key press.

Next, the paper feeding method for underline printing will be further described. In this embodiment, a method is adopted in which the paper is fed by driving the pulse motor 2, and the paper is fed by one dot with one pulse applied to the pulse motor 2, and the position where the angle line is printed is as follows. Leave a space for 1 dot below the 16 vertical dots where 1 character will be printed,
An underline of one dot shall be printed below it. Therefore, if you want to underline a character after printing a normal character, you only need to feed the paper by two dots, and step I
It is sufficient to apply two pulses to the pulse motor 2 at D. Next, press 3 on the underline key to print an underline below the character on the 6th fold, and the process proceeds to steps IA-IB-tC.In step tC, the flip-flop PF has already been set, so the answer is NO. ,
At IF, print an underline on the 6th fold. By repeatedly pressing the underline keys I and 3 in this way, an underline can be printed at the desired 5 to 19 digits [1]. If the result in step 2A is NO, it means that 4 is pressed on the character input key group Kl or the function key group, and processing appropriate for each key is performed in step 3A. Also, the paper feed flip-flop PF is reset when, for example, a line feed instruction key is pressed to move to the next line, and after printing one line, the shift key is pressed. If 3 is pressed on the underline, the paper is fed for the underline, one line is printed, and then when 4 is pressed on a group of function keys such as the line feed instruction key, 16 dots are printed to print the next line. The paper shall be fed for more than 1 minute.

Effects As explained above, according to the present invention, by using dots that are less frequently used for character printing as dots for underline printing, it is possible to average out the use frequency of each of the five dots, and as a result, the dot printer The lifespan of can be extended. In this embodiment, l is used less frequently.

Of the 2.3, 15.16 dots, the 16th dot was used for underline printing, but in another embodiment, it is possible to remember which of the 5 dots was used for the previous underline printing. If the five dots can be used alternately based on this stored data, the frequency of use of each dot can be further averaged. Note that at this time, the amount of paper feed will differ depending on the dots used. Further, although the explanation has been given using an angline as an example, the same effect can be expected with a ruled line or the like.

[Brief explanation of drawings]

FIGS. 1A to 1H are diagrams showing printed characters. FIG. 3 is a block diagram showing the circuit configuration of the present invention, FIG. 4 is a flow chart showing the flow of operation, and FIG. 5 is a perspective view showing the dot printer. Here, 1 is a group of oysters with letters, K2 is a shift key, and K3
is Angline key 1K4 is a group of function keys, C
PU is a central processing unit, MDI, Mn2 is a motor driver, HD is a head driver, and PR is a printer. One - Figure 1 (A) Figure 1 (B) Figure 10 (C) Figure 1 (D) Go S1 Figure (E) Figure 1 (F)! A, Figure 1 (G) Figure A1, Figure 1 (H)

Claims (1)

[Claims] A recording device that records characters, etc. using a plurality of recording elements, characterized in that lines are recorded using specific dots that are used less frequently for recording white characters, etc. of the recording elements.