JPS61279575A - Electronic typewriter - Google Patents

Abstract

PURPOSE:To eliminate the need to erase character data stored in a storage part and enable a character printed before a change in character size to be automatically corrected, by a system wherein when automatically correcting a character, character data and character size corresponding to the printing position of the character to be corrected are read from a storage part, and the character is corrected. CONSTITUTION:When an input through a character key or the like is supplied from a keyboard part 2, character data and character size data corresponding to the character key are stored into the storage part 4 at a storage address corresponding to the printing position, and a printing operation is conducted. On the other hand, when a correction key in the keyboard part 2 is operated, the character data and the character size data are taken out from the storage address corresponding to the correcting position, and the character data and the character size data at the storage address are erased. Then, character size is once changed according to the character size data taken out, and a correcting operation is conducted based on the character data. After the correcting operation is completed, character size is returned to the character size presently indicated by a character size changing switch 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic typewriter that can automatically erase printed characters.

Conventional technology Conventionally, electronic typewriters, which are capable of printing and erasing characters in at least two different font sizes, automatically erase characters while printing in the same font size; When the font size was changed in , the configuration was such that even if you tried to erase the font before the change, it would not be possible to erase it automatically.

The following description will be made based on the erase control flowchart of a conventional electronic typewriter shown in FIG. Normal typewriter processing, which is not shown in this flowchart, is carried out in step 31. If a character input is detected in step 32, the process proceeds to step 38, in which character data is stored in the storage address in the storage unit corresponding to the position where the character is printed, and in step 39, the character data corresponding to the character input is detected. is printed.

On the other hand, when an erase operation input is detected in step 33, character data is extracted from the storage address in the storage unit corresponding to the erase position in step 3e, and an erase operation corresponding to the character data is performed in step 3a. Furthermore, when a character size change input is detected in step 34, the character data stored in the storage section is erased.

Problems to be Solved by the Invention However, in conventional electronic typewriters, when the user attempts to erase the characters before the change after changing the font size, the character data before the change is not stored in the storage unit. Therefore, the font cannot be deleted automatically, and the user has to manage the font and font size.

Means for Solving the Problems The present invention stores character data and print character size in a storage address corresponding to the print position in the storage unit when a character is input from the keyboard unit, and when automatic deletion is performed, the print The present invention is characterized in that the character data and character size corresponding to the position are retrieved from the storage section and the corresponding character is erased.

Effects With the above-described configuration, the present invention stores the character size for each printed character even if the character size is changed, so there is no need to erase the character data in the storage unit, and the characters before the character size change The text can also be automatically deleted, eliminating the need for the user to manage the text before changing the text size.

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

1 to 8 show an embodiment of the electronic typewriter of the present invention. The main body 1 is equipped with a keyboard section 2 and a character size changeover switch 5, as shown in FIG. As shown in FIG. 3, the keyboard section 2 has keys arranged on it that are included in a general typewriter. In other words, backspace 2a.

Forward 2b1 Erase 2c, Return 2d, Space 2@, Repeat 2f, Left margin set 2'J
s right margin set 2h1 tab set 211 tab clear 211 margin release 2, tab 21. Shift lock 2m, shift 2n, reverse index 2o,
Keys such as index 2p, color change 2q, and other character keys are provided.

In addition to the selection means 7, the printing section 6 includes a line feed means 8 for vertically moving the attached paper, a pen left/right moving means 9 for moving the pen in the left and right directions, and a pen top and bottom for touching and releasing the pen on the paper. It includes a moving means 10, and printing of characters is performed by a well-known method using a combination of a line feed means 8, a pen left/right moving means 9, and a pen up/down moving means 1o. Also,
The print data is processed by the control section 3 according to the key input from the keyboard section 2, and is output to the printing section 6.

FIG. 4 shows a configuration diagram of the printing section 6. Pen left/right movement means 9
is the X motor 1B, gears 18a and 18b.

18C, pulley 18d, shaft 113@, and O-branch 1af. When the X motor 18 rotates, rotational torque is transmitted to the gear 18C, and when the gear 18c rotates, the carriage is provided between the pulley 18d and the pulley 18d. The rope 1sf connected to the rope 13 is wound up. Therefore, as the X motor 18 rotates, the carriage 13 slides on the shaft 189 and is moved left and right. Further, the line feed means 8 is composed of a Y motor 19, gears 19a, 19b, and a platen 21 connected to the gear 19b, and as the Y motor 19 rotates, torque is transmitted to the platen 2 via the gears 19a, 19b.
It works to rotate 1. On the other hand, the pen vertical movement means 10
consists of a Z motor 20, a bushing lever 22, and a cam (not shown) provided between the Z motor 20 and the bushing lever 22. When the Z motor 20 rotates, the push lever 22 rotates, and the carriage 13 is rotated. Contact between the pen and the platen 21 is controlled by suppressing or releasing the rear part of the pen mounted in the pen mounting hole 13b. 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. When the lever is operated, the gear portion 13c provided around the carriage 13 is rotated by the lever to rotate the carriage 13. Also, 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 14,155.
, 16, 17 are attached, and each time the color change button 2q is pressed, the pen holder 13 rotates clockwise to select each color and draw colored characters. Further, in order to use the eraser pen, the eraser pen is attached to the ben 15 position, and a pen of the same color as the pen 14 and not erased by the eraser pen is attached to the ben 16 position.

Therefore, the number of pen colors is two, pen 14 and pen 1γ. The pen used here has a pen body 2 as shown in Figure 6.
4 has a printed portion 24b at the tip thereof, and a portion 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, steps 22 to 28 are performed.
In step 29, character data and character size data corresponding to the character key are stored in the storage section 4 at a storage address corresponding to the printing position, and a printing operation is performed in step 29. On the other hand, when the erase key is input from the keyboard section 2 in step 23, the process proceeds to step 24, where the character data and character size data are retrieved from the storage address corresponding to the erase position, and the character data and character size data at this storage address are erased. do. Step 2
The character size is changed based on the character size data retrieved in step 6, and an erasing operation is performed based on the character data at step 26. After the erasing operation is completed, step 26
The knob 27 is configured to return to the font size currently specified by the font size change switch 6. Next, the storage unit 4 will be explained using FIG. 8. This electronic typewriter can print 80 characters per line with the minimum character size, and the storage unit 4 can also store character data and character size data for 80 characters with the minimum character size, and unless there is a line break, the same line can be printed. The printed characters are designed so that they can be erased. Furthermore, characters can be printed in a total of nine different character sizes, three in the horizontal direction and three in the vertical direction. For example, when the print start position (carriage position) is at position 3, if you input "A" from the keyboard with a character size of 3 in the horizontal direction x 3 in the vertical direction, "A" will be stored at the storage address 3 in the storage section 4. ” character code is 8 of the storage address
33 is stored at address 3 at the beginning of the character size in the horizontal and vertical directions, and the carry and fuji move to the next printing position, 6, in proportion to the horizontal direction of the character size. Next, change the font size to 2 horizontally and 2 vertically and enter B'', and the character code of B'' is stored at address 6 in storage unit 4, and the character code for the font size 2 horizontally and 2 vertically is input at address 86. Remember 22.

Next, use the backspace 2a to move the carriage to the carry-fuji position 4, change the font size by 1 Vc in the horizontal direction and 1 Vc in the vertical direction, and enter C''' from the keyboard section 2. Store the character code of "C" at address 84 with character size 1 in the horizontal direction and 1 in the vertical direction, 11.Furthermore, use the backspace 2a to move the carriage to position 3, and delete it from the keyboard section 2. When key 2c is pressed manually, the control unit 3 moves from address 3 of the storage unit 4 to A”
Extract the character code and character size data 33 from address 83, and set the temporary character size to 3. Vertical 3, @A
Erase 1 character and change the font size to 1. It is configured to return to vertical 1 and erase data at addresses 3 and 83 of the storage section 4.

Effects of the Invention According to the present invention, even if the character size is changed, the character data and character size data are still stored in the storage unit, so even if the character before the character size change is deleted, the carry It is only necessary to move the character to the starting position of the character to be erased, and the user does not have to manage the characters and character sizes, which greatly improves usability.

[Brief explanation of the drawing]

FIG. 1 is a main part program diagram showing an embodiment of the electronic typewriter of the present invention, FIG. 2 is a perspective view of the structure of the typewriter, and FIG. 3 is a key layout diagram of the keyboard of the typewriter. Fig. 4 is a perspective view of the printing section of the same typewriter, Fig. 5 is a front view of the pen selection means of the same typewriter, Fig. 6 is a perspective view of the pen of the same typewriter, and Fig. 7 is a perspective view of the same typewriter. A flowchart of the main part of the control section, FIG. 8A is a configuration diagram of the storage section of the same typewriter, FIG.
The figure is a flowchart of a conventional electronic typewriter. 1...Electronic typewriter body, 2...
Keyboard section, 3... Control section, 4...
Memory section, 5...Character size selection switch, 6.
...Printing section. Figure 1 Figure 2 Figure 3? Figure 4 Figure 5 24ζ Figure 7 Figure 8 Figure 8 I'm confused!

Claims (3)

[Claims] (1) A printing unit that can print and erase characters in at least two or more different character sizes, a storage unit that stores printed characters and character sizes, and a keyboard unit that inputs printed characters, etc., including an erase key; a font size changing unit that changes the font size; and processing input from the keyboard unit;
It is equipped with a control unit that controls the printing unit to print characters, etc., and when erasing printed characters stored in the storage unit, regardless of the currently specified character size, the character size when printed is An electronic typewriter characterized by erasing characters. (2) When erasing printed characters stored in the storage unit, only characters having a starting point at the same position as when the printing unit starts printing are erased. The electronic typewriter described in item 1. (3) The storage unit has a minimum character size in the horizontal direction and has a capacity that can store one line of character data and character size data. 3. The electronic typewriter according to claim 1, wherein the electronic typewriter is configured such that character data and character size data of the input characters are stored at a storage address in a storage section.