JPS61279574A - Electronic typewriter - Google Patents

Abstract

PURPOSE:To enable perfect characters to be printed, by a system wherein where it is stored that a corrected part is contained in the range of the lateral character size of a character to be printed from a printing-starting position when reprinting, printing is conducted by a non-correctable printing pen. CONSTITUTION:Processing is started when an input through a character key or the like is supplied from a keyboard part 2. Where a corrected part is contained in the printing range of the character size of a character to be printed from the printing-starting position, the non-correctable printing pen 16 is set. On the other hand, where a corrected part is not contained in the printing range of the character size from the printing-starting position, a correctable printing pen 14 is set. Then, a character corresponding to the key input is printed. When a correction key 2c is operated, a correction pen 15 is set, and the same character as the character to be corrected is printed by the correction pen 15, thereby correcting the character. In this correcting operation, back spacing by a one-character amount with the same character size as that of the corrected character is automatically performed on printing the character to be corrected.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pen-type electronic typewriter that performs printing and erasing using a pen.

2. Description of the Related Art Pen-type electronic typewriters equipped with an erasing pen have been known. This electronic typewriter is equipped with an erasable printing pen, an erasing pen, and a non-erasable printing pen, but when an erasing operation is performed, the erasing pen erases characters already printed with the erasable printing pen. However, if you change the font size or move the print position and print again, the first erasable printing pen is configured to print even though it is within the erased area. Ta.

The following description will be made based on the erase control flowchart of a conventional electronic typewriter shown in FIG. Normal typewriter processing not shown in this flowchart is performed in step 31. If a character input is detected in step 32, the process proceeds to step 41, where characters corresponding to the character input are printed. On the other hand, when an erase operation input is detected in step 33, erase pens are set respectively in steps 34 and 35, and the erase operation is performed by drawing roughly the same characters as the characters that were printed with the erase pens, and then printing. Set to a possible printing pen. After the erasing operation, if the input from the keyboard section is a character input, step 3T to step 3
In step 8, a non-erasable printing pen is set to print characters corresponding to the character input, and then in step 4o, an erasable printing pen is set. Further, if there is an input other than character input at step 37, the process proceeds to step 31, and normal typewriter processing is performed.

Problems to be Solved by the Invention However, in the above configuration, if the character size is changed or the print position is moved and the print position returns to the last position, the erase operation is not performed. Since the characters are printed using an erasable printing pen, there is a problem in that the erasable printing pen cannot print in the area erased with the erasing pen, so complete characters are not printed.

Means for Solving the Problems The present invention provides, when an erasing operation is performed, a storage unit that indicates that the area corresponding to the horizontal character size of the erased character from the position where the erasing operation was performed has been erased. If the erased information is memorized within the horizontal character size range of the printed characters from the print start position when reprinting, the print will be performed with a non-erasable printing pen. The feature is that it is configured to do the following.

Function: With the above-described configuration, the present invention prints characters with a non-erasable printing pen when an erased area is included in the printing range, making it possible to print complete characters. .

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

1 to 7 show an embodiment of the electronic typewriter of the present invention. As shown in FIG. 2, the main body 1 is equipped with a keyboard section 2, a character size changeover switch 6, and the like.

As shown in FIG. 3, the keyboard section 2 has keys arranged on it that are included in a general typewriter. Tsumari, Backspace 2a, Fokudo 2b.

Delete 2c, Return 2d, Space 2e, Repeat 2f, Left margin set 2q1 Right margin set 2h1 Tab set 211 Tab clear 2j1 Margin release 2, Tab 21. Shift lock 2m, shift 2n
, reverse index 20, index 2p1
Keys such as color change 29 and other character keys are provided. As shown in FIG. 1, the printing section 6 includes, in addition to the pen selection means 7, a line feed means 8 for moving the paper in the vertical direction, a pen left/right movement means 9 for moving the pen in the left and right directions, and a pen moving means 9 for moving the pen in the left and right directions. It includes a pen vertical movement means 10 for touching and releasing the pen, and a line feed means 8 for printing characters.
This is carried out by a well-known method using a combination of pen horizontal movement means 9 and pen vertical movement means 100. In addition, the print data is transmitted to the control unit 1 according to the key input from the keyboard unit 2.
1 and output to the printing section 6.

FIG. 4 shows a configuration diagram of the printing section 6. Pen left/right movement means 9
is X motor 18, gear 'f8a, 18b.

It is composed of an 18C1 pulley 18d, a shaft 18e, and a Q-pull t8f, and when the X motor 18 rotates, rotational torque is transmitted to the gear 180 via gears 18a and 18b.
When the gear 18c rotates, the rope 18 provided between the pulley 18d and connected to the carriage 13 is wound up. Therefore, as the X motor 18 rotates, the carriage 13 is moved along the shaft 18e.
You can move it left and right by sliding it. Furthermore, the line feed means 8 is composed of a Y motor 19, gears 19&, 19b, and a platen 21 connected to the gear 19b.
It works to rotate the platen 21 via the shaft 9b. On the other hand, the pen vertical movement means 10i, the J:Z motor 20, the
It is composed of a bushing lever 22 and a cam (not shown) provided between the Z motor 2o and the bushing lever 22, and when the Z motor 20 rotates, the bushing lever 22 rotates, and the pen mounting hole of the carry body 13 is rotated. Contact between the pen and the platen 21 is controlled by suppressing or releasing the rear part of the pen attached to the pen 13b.

Further, although not shown, a spring attached to the carriage 13 is configured to urge the pen in a direction to separate from the platen 21. Further, the rotation of the pen holder 13 is caused by changing the rotation angle of the motor 20, so that the bush lever 22 is moved by the cam with a larger amplitude than when pressing the pen. The gear part 13 provided around the carriage 13 is operated by the lever.
The carriage 13 is configured to be rotated using c. Further, 13a is a lever for taking out the pen from the pen mounting hole.

FIG. 5 shows the arrangement of pens attached to the pen selection means 7. The pen holder 13 usually holds four color pens 14, 15,
16 and 17 are attached, and when drawing a graph, the pen holder 13 rotates clockwise to select each color and draw a colored graph. Furthermore, in order to use an erasing pen, the erasing pen is attached to the pen 16 position, but the structure is such that a pen of the same color as the pen 14 and which cannot be erased by the erasing pen is attached to the pen 16 position. Therefore, the number of pen colors is two, pen 14 and pen 17.

The pen used here has a printing part 24b at the tip of the pen body 24, as shown in FIG. 6, and a part 24a pressed by the bushing lever 22 at the rear end.

Next, the operation will be explained using a flowchart of the main part of the control section shown in FIG. Normally, when an input such as a character key is input from the keyboard section 2, the process proceeds to step 27, and if the printing range corresponding to the character size to be printed from the printing start position includes an already erased part, If the non-erasable printing pen 16 is set in step 3o, and the erased part is not included within the printing range corresponding to the character size from the print start position to be printed, the process moves from step 27 to step 28. In step 29, the erasable printing mark 14 is set, and in step 29, characters corresponding to the above-mentioned keystrokes are printed. Now, when the erase key 2C is operated, the process proceeds from step 23 to step 24, where the erase pen 16 is set, and at step 25, the erase pen 15 prints the same character as the erase character to perform erasure. It is well known that in this erasing operation, after an erased character is printed, it is automatically backspaced by one character in the same character size as the erased character. Further, in step 26, the memory unit stores information that the erased character has been erased within the same character size range as the erased character.

Next, it will be explained using FIG. For example, in a line that has not been printed yet, the pen print start position is at position 61, the font size is "aBC", 1 horizontal 1, 1 vertical, and the font size is 2 horizontal 2, 2 vertical.
When @DF'' is printed in this line, there is no erased trace on this line, so it is printed with the erasable printing pen 14 as shown in Fig.
When you use , move to 51 and press the erase key 2c, 6
Delete a'' that was printed at 1.Furthermore, use backspace 2a to move the print start position to 60, and print @A'' with a character size of 2 horizontally and 2 vertically.This character ''A'' will be printed at the print position. This will print in the range of 60 to 62 in the horizontal direction and 0 to 2 in the vertical direction. However, because there is an erased trace of "a#" with a character size of 1 horizontal 1 and 1 vertical at printing position 51, the character "A" will be printed by the printing ben 16, which cannot be erased. (Fig. 8) On the other hand, move the printing start position to 54 using spaces 20, etc., press the erase key 2c to erase "D", and print "DE" with a character size of 1 horizontally 1 vertically, and print positions 64 and 66 are Because it is a trace of erasure,
@DE''Both letters are marked 8th with non-erasable printing ben 16.
It is configured to be printed as shown in Figure (c).

Effects of the Invention In the electronic typewriter N having an erasing function using an erasing pen according to the present invention, since the erased range is stored in the memory unit, if there is already an erased place within the range where printing is attempted, , it becomes possible to print with a non-erasable pen, and complete characters can be printed regardless of changes in character size or movement of the carriage, which greatly improves usability.

[Brief explanation of drawings]

FIG. 1 is a block diagram of essential parts showing an embodiment of the electronic typewriter of the present invention, FIG. 2 is a perspective view of the configuration of the electronic typewriter, FIG. 3 is a diagram of the key layout of the keyboard of the typewriter, and FIG. Figure 4 is a perspective view of the printing section of the typewriter, Figure 6 is a front view of the pen selection means of the typewriter, Figure 6 is a perspective view of the pen of the typewriter, and Figure 7 is the control unit of the typewriter. 8 is a diagram showing a printing example of the same typewriter, and FIG. 9 is a flowchart of a conventional electronic typewriter. 1...Electronic typewriter body, 2...
Keyboard section, 3... Control section, 4...
Memory section, 6... Font size change switch, 6.
...Printing section. Figure 1 Figure 2 21Fm2'n 2j 2g Figure 4 Figure 7 Figure 8

Claims (1)

[Claims] A printing section that is capable of printing characters in at least two or more different character sizes, including a pen selection means that rotates a pen holder to which a plurality of pens can be attached and sets a predetermined pen to a printable position, and an erasing operation. a keyboard section including an erase key to perform the operations, a font size changing section for changing the font size, processing inputs from the keyboard section, the pen selection means and the font size changing section, and controlling the printing section to print characters. and a storage unit that stores the erased range, and an erasable printing pen is placed in the first position of the pen holder, an erasing pen is placed in the second position, and non-erasable printing is placed in the third position of the pen holder. Even when the pen is attached, the pen holder rotates to the second position each time the erase key is operated, memorizes the erased range when erasing a predetermined character, and changes the character size when reprinting. The electronic typewriter is characterized in that if the printing range of the character to be reprinted includes a previously erased range, the character is printed using a third non-erasable printing pen.