JPS60201981A - Electronic typewriter - Google Patents

Abstract

PURPOSE:To enable both a beginner and a skilled operator to easily use an electronic typewriter, by a system wherein the delay time for which a printing ribbon, a type wheel and the like stay at the position of a printed character after a key-inputting operation can be selecting set by the operator. CONSTITUTION:When changing the delay time for which the printing ribbon 6 and the type wheel 5 stay at the position of a printed character after an inputting operation through a keyboard 2, a code key 11 and an S-key in English letter keys 8 are successively depressed, and then a numeral corresponding to an index for a desired delay time in a delay time table stored in a RAM is inputted through numeral keys 9. Accordingly, since a biginner can set a long delay time, the position of the printing ribbon 6 can be prevented from being lowered during printing a word, and since a skilled operator can set a short delay time, the waiting time required for lowering the ribbon position after a printing action can be reduced, so that both the biginner and the skilled operator can easily use the typewriter, and the overall printing speed can be enhanced.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention allows a user to arbitrarily set a grace period during which a printing ribbon, printing wheel, etc. remains at a printed character position after a key is manually operated. This invention relates to an electronic typewriter.

[Technical background of the invention and its problems] In general, in electronic turbo writers using a printing wheel for printing Human-generated numbers, letters, and symbols are converted into character codes that correspond to each day.

- Based on this character code, the print wheel is rotated so that the print of the character corresponding to the character code is printed on the platen.
・Rotation drive is controlled by the printing wheel motor so that it faces the printed printing paper. At the same time, raise the ribbon position of the print ribbon so that the print ribbon is interposed between the type on the print wheel and the print paper set on the platen. Also, the carriage carrying the printing machine vortex is moved left and right so that the characters on the printing wheel are at the printing position on the printing paper. Then, the first thread drives the hammer solenoid and presses the print hole.
When the printed characters are struck on the printing paper set on the platen through the printing ribbon, the characters corresponding to the character codes manually entered by the keys are printed on the printing paper. In JJ, the above-mentioned rotational driving of the print wheel, raising of the ribbon position, and movement of the carriage position are usually performed at the same time.

In an electronic typewriter configured in this way,
In order to shorten the time between manual key operation and print output, the ribbon position of the print ribbon remains elevated during continuous key operation, and the position of the print wheel also remains in one position. It does not return to the home position every time the printout process for the character code is completed. but,
If the next key is not manually operated within a certain grace period after one key is manually operated, lower the ribbon position of the print ribbon or turn the print wheel to make it easier to check the characters that have just been printed out. I was returning it to the home position. Normally, the grace period is set to a constant value 1a for each type of electronic typewriter.

However, the above-mentioned electronic typewriter with a fixed grace period has the following problems.

In other words, in the case of an electronic typewriter with a short grace period, when a beginner uses this electronic typewriter, the ribbon of the C-printed ribbon may be lost during the printout of one word because the manual operation of the keys is slow. The position will drop.

Therefore, the time required for the rise of the ribbon position is added to the time required for printing output in response to the manual key operation of the degree C1, and thus the overall printing speed becomes even slower.

On the other hand, if the above-mentioned grace period is set to a long time, when a person who is skilled in manual key operation and uses this electronic typewriter, after printing out a certain number of words, if he tries to check the printed characters, Key human power (After printing, the time it takes for the printing ribbon to lower its position is long, increasing the time required to confirm the characters. Therefore, the ribbon has to be held until the ribbon position lowers, which is a grace period for experts. Electronic typewriters with long settings are difficult to use,
There was also a problem that the overall printing speed decreased.

[Object of the Invention] The present invention has been made based on the above-mentioned circumstances, and its purpose is to prevent key manual operation (“rear printing ribbon, printing wheel, etc. stays at the position of the printed character”). To provide an electronic typewriter that is easy to use for both beginners and beginners and can improve the overall printing speed by allowing the user to arbitrarily set the waiting time.

[Summary of the Invention] The electronic typewriter of the present invention is provided with a grace time setting means that can arbitrarily set a grace period during which the printing ribbon remains at a printed character position after manual key operation. When the elapsed time between characters exceeds the grace time set by the grace time setting means, the ribbon position of the printing ribbon is moved from the character position to another position.

In another invention, when the elapsed time between the manual key operations exceeds the grace period, the ribbon position of the printing ribbon is moved from the character position to another position, and the printing wheel is moved to a predetermined position. I am trying to move it to the home position.

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

Figure 1 is the actual hI! It is a front view showing the electronic typewriter of example i, and 1 in the figure is a housing. A four-board 2 is provided on the front surface of the housing 1, and a platen 3 for setting printing paper is incorporated in the upper part of the inside of the housing. A printing frame structure is mounted on a carriage 4 which is moved parallel to the platen 3. The printing device includes a printing wheel 5. with type formed at the tip of each spoke. A printing wheel motor that rotationally drives the printing wheel 5, a printing ribbon G, a ribbon feed motor, a ribbon position moving device using a crock or the like to move the ribbon position up and down, and a printing ribbon 6 that moves the characters on the printing wheel 5. A hammer solenoid 7 and the like for striking the printing paper set in the latin 3 through the 1 latin 3 is incorporated.

In addition, the kneeboard 2 has alphabetic keys 8. Numeric keys 9. In addition to the space key 10, various function keys such as a code key 11 are arranged.

FIG. 2 is a block diagram showing the electronic table writer, and numeral 12 in the figure is a CPU that executes various operations based on various key input information manually entered from the keyboard 2.
(Central processing unit). This CPU 12 prints a print wheel 5 corresponding to each character through the data pass code 3.
ROIv114. which stores fixed data such as the rotational position of.
RA backed up by a battery that temporarily stores variable data such as character codes input from the keyboard 2
Control M15. There is also a keyboard 2 for inputting character codes etc. manually. Motor drive control circuit 16 for driving and controlling various motors. A solenoid drive circuit 17 for driving the hammer solenoid 7 and a ribbon position moving circuit 18 of the ribbon position moving device are connected to the CPU 12 via a data bus 13. Also, CPU12
A clock signal oscillator 19 is connected to the clock input terminal CK.
The clock and I signals from the clock signal oscillator 19 are input to the interrupt input terminal INT.
An interrupt cycle signal of A (1is) is input.

The motor drive control circuit 1G includes a paper feed [-ta 20. A carriage motor 21 that controls the movement of the V-ridge 4. Ribbon feeding motor 22 for feeding the printing ribbon 6. A print wheel motor 23 is connected to control the rotation of the print wheel.

As shown in FIG. 3, in the RAM 15, in addition to a print data buffer 'RA 1 for temporarily storing character codes inputted from the keyboard 2, a print ribbon 6 is provided after the character keys on the keyboard 2 are manually operated. , a margin time table RA2. that stores the margin time during which the print wheel 5 remains at the position of the character printed on the print paper. Area RA3 stores a code flag indicating that the code key 11 of the keyboard 2 was pressed manually (8. Area RA4 stores a flag indicating that the S key of alphabet key 8 was pressed manually. The grace time TS (
8 phase grace poem area RA5. An elapsed time counter RA6 is formed to measure the elapsed time after the manual operation of a character key such as an alphabetic key 8 or a numeric key 9.

In table RA2 for the grace period + 1), 9 is displayed at 0.3 second intervals from 0.3 to 2.7 seconds for indexes 1 to 9.
Grace time is stored.

When various key input signals are input from the keyboard 2, the CPU 12 inputs the required grace period TS from the grace time table RA2 in the grace time area R according to the flowchart of FIG.
Set it to A5 or set the character code to print data buffer R.
It is configured to be stored in A1. That is, when a key signal is input from the keyboard 2, it is first checked whether this key (ffi number) was caused by a key operation of the code key 11. If it is caused by the code key 11, the RA
The code flag in area RA3 of M15 is set to 1. If it is not the code key 11, it is checked whether it is the S key among the alphabetic keys 8. If it is the S key, if the code flag in area RA3 is already set to 1, it is determined that the grace time setting task has started, and the S flag in area RA4 is set to 1.

If the code flag is not set to 1, it is determined that a normal character code has been input, and the character code corresponding to the S character is stored in the print data buffer RA1.

Next, if the input key signal is the S key, it is checked whether the input key signal is the numeric key 9 or not. If the number key is 9, which is any number from 1 to 9, it is checked whether the S flag in area RA4 has already been set to 1, and if it has not been set, the number manually entered by the key is stored in table RA2 for 0 seconds. It is determined that the number indicates an index within the number, the grace time specified by the number is read out, and the grace time is set in order of grace time 1iiiIRA5.

Each time, the flag of each area RA3.4 is cleared to O, and the grace time setting task is completed. In addition, S of area RΔ4
If the flag is not set to 1, it is determined that the usual character two below has been input, and the character code corresponding to the input key number is printed in the data buffer? Store in R, A 1.

Further, the CPU 12 generates an interrupt according to the flowchart of FIG. 5 every time a vj interrupt signal with a period of TA (1 ms) is input from the clock signal oscillator 19 to the interrupt input terminal INT after the initial setting task is completed after the power is turned on. Configured to carry out an escape.

That is, when an interrupt signal with a period TA (1m5) is input, the period TA is added to the elapsed time TO of the elapsed time counter RA6 in the RAM 15, and then the character code to be printed out to the print data buffer RAI is determined at Pl. Check whether it is stored or not.

If a character code is stored, the print wheel motor 23 is driven to control the rotation of the print wheel 5 so that the print of the character corresponding to the character code faces the print paper set on the platen 3. :rJru. next,
It is checked whether the ribbon position of the printing ribbon 6 is located at the upper side, which is the position of the printed character. If it is located at the lower side, a control signal is sent to the ribbon position movement circuit 18 to change the ribbon position. Drive the moving device to move the ribbon position upward by one point. Thereafter, a drive signal is sent to the H solenoid drive circuit 17 to drive the hammer solenoid 7 to print out a character corresponding to the character code on the printing paper. Then, the carriage motor 21 is driven to move the carriage 4 to the middle of the next printout, and the elapsed time counter RA6 is
5. Clear the elapsed time TC to O and print output for one character code. ;i'; End the task. However,
With the following interrupt signal human power.

``)1 prints out in the print data buffer RAI.
If the \ character data is not stored, it is determined that the next key manual operation has not been executed yet, and at P2 the elapsed time TC of the elapsed time counter RA6 is set to the grace period 10 range R.
It is checked whether the grace period TS set in A5 has been exceeded. Then, if 3'iE is entered in grace time TS,
When the ribbon position L1 of the printing ribbon 6 is located on the upper side, a control signal is sent to the ribbon position head 3 movement circuit 18 to move the ribbon position downward. Thereafter, the print wheel motor 23 is driven to move the print wheel 5 to the home position. In this state, the ribbon position is lowered and the print wheel 5 has returned to its home position, so the user can confirm the character that has just been printed out.

Note that if the elapsed time TC has not reached the grace time TS or if the ribbon position has already fallen to the lower side, the next interrupt signal is input to P2.

In the electronic typewriter configured as described above, when changing the grace period TS during which the printing ribbon 6 and the printing wheel 5 remain at the position of the printed character after the keys on the keyboard 2 are manually operated, the keyboard After pressing the code key 11 of the function keys 2 and the S key of the alphabet keys 8 in succession, enter the number corresponding to the index of the required grace time in the grace time table RA2 to the number on keyboard 2. All you have to do is press key 9 manually.
Just set □. On the other hand, for an expert, 1.2 degrees, for example, for a beginner, press a number key such as 7, 8, 9, etc., and press a number key such as TS3 for a relatively long grace period of 2.1 to 2.7 seconds. Relatively short grace period T of .3 to 0.9 seconds
It is sufficient to set S.

Therefore, for beginners, by setting the grace time TS long, it is possible to prevent the ribbon position n of the printing ribbon 6 from dropping during the printout of one word, and for experts, the grace time TS can be set long. By setting short, the time it takes for the ribbon to lower its position after printing can be shortened. Its ff, , 'i': %? 71 heart right,
It is possible for any expert to improve the printing speed for use, printing, and rest.

Further, since the grace period TS can be easily changed by the user by operating the keys provided on the keyboard 2, the operability of the electronic typewriter can be further improved.

Note that the present invention is not limited to the embodiments described above. In the embodiment, when the 91-pass interval C between key manual operations reaches the grace time TS, the ribbon positions of the printing wheels 4 and 6 are lowered, and the printing wheel 5 is controlled to return to the home position. However, the initial purpose can be sufficiently achieved by simply lowering the opening of the ribbon 1η when the baby elapsed time TC reaches the grace time TS. Furthermore, when the grace time TS is reached, instead of lowering the ribbon position and returning the print wheel 5 to the home 1 position, the ribbon position is lowered and the 11 carriage 4 is moved left and right to a position where the printed characters or single twist can be confirmed. You may move it to

Further, the number of grace times set in the grace time table RΔ2 of RA~·115 can also be changed arbitrarily as needed.

[Effects of the Invention] As explained above, according to the present invention, the user can arbitrarily set the grace period during which the printing ribbon, printing wheel, etc. remains at the position of the printed character after the key is manually operated. ing. Therefore, for beginners, by setting a long grace time, it is possible to prevent the ribbon position of the printing ribbon from lowering in the middle of printing one word, and for experienced users, it is possible to prevent the ribbon position from lowering during printing of one word. By,
The waiting time until the ribbon position lowers after printing is shortened. As a result, it is easy to use for both beginners and experts, and it is possible to improve the overall printing speed.

[Brief explanation of drawings]

Claims (1)

[Claims] (1) After rotating the printing wheel to a position corresponding to the character code entered manually from the keyboard, the characters formed at the end of the printing wheel are struck onto the printing paper via the printing ribbon. °C1 In an electronic typewriter that prints and outputs characters corresponding to the character code, key manual operation 19 A grace period that can be arbitrarily set for the grace period during which the printing ribbon remains at the position of the printed character. a setting means, an elapsed time measuring means for measuring the elapsed time between key manual operations, and when the elapsed time=1 measuring means measures the grace period set by the grace period setting means, the printing Electronic typewriter 0 (2), characterized in that it is equipped with a moving means for moving the ribbon position from the character position to another position.Moving the printing wheel from the keyboard to the position corresponding to the character code that is pressed by the key. In an electronic typewriter that prints out characters corresponding to the character code by hitting the printed characters formed at the end of the printing wheel onto the printing paper via the printing ribbon after rotating, the keys are manually operated. a grace time setting means that can arbitrarily set a grace period during which the printing ribbon and the printing wheel remain at a printed character position; and an elapsed time measuring means that measures the elapsed time between manual key operations; When the elapsed time measuring means measures the grace time set by the grace time setting means, it moves the ribbon position of the printing ribbon from the character position to another position and moves the printing wheel to a predetermined home. An electronic typewriter characterized by being equipped with a moving means for moving it to a position.