JPS62240572A - Printing apparatus - Google Patents

Abstract

PURPOSE:To make it possible to erase only one of words connected by a hyphen along with the hyphen or to erase the same so as to leave the hyphen, with respect to the word containing the character at the printing position corresponding to a printing head, by detecting whether there is the hyphen at the printing position in the one upper rank side of a head character or in the one lower rank side of a terminal character. CONSTITUTION:This word erasing control is based on thinking such that a hyphen is regarded as a character to belong to the preceding word of the hyphen and, when the preceding word is erased, said word is erased inclusive of the hyphen. For example, when the preceding word EXAMPLE is erased, a printing head is allowed to locate at either one of printing positions of a second - ninth figure and, if an erasing key is operated, the printing head moves to the printing position of the hyphen of the ninth figure to successively erase characters from the hyphen over a range from the ninth figure to the second figure. When the succeeding word TYPE 1 is erased, the printing head is allowed to locate at either one of printing positions of a tenth - fifteenth figure and, if the erasing key is operated, the printing head moves to the printing position of the fourteenth figure to successively erase over a range from the fourteenth figure to the tenth figure.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a printing device, and in particular has an erasing mechanism for erasing a word consisting of a set of characters, and when erasing a word, also erases hyphens preceding and following the word. The present invention relates to a printing device in which the hyphen is not erased, and a printing device in which the hyphen is not erased.

(Prior art) When printing sentences on printing paper using a printing device such as a typewriter, the spelling of words is often printed incorrectly. It is necessary to print again.

Therefore, in recent electronic typewriters, etc., the control device is equipped with a current position memory that stores the current position of the head, and a print data memory that stores the data input and printed from the keyboard. Many printers are equipped with an erasing mechanism that sequentially erases a word consisting of a set of characters printed using data from the current position memory and print data memory in response to an operation using a correction ribbon from the end.

As a printing device having this type of erasing mechanism, for example, Japanese Patent Application Laid-Open No. 60-210482 discloses that, in response to the operation of an erasing command key, each word consisting of . There is a version that automatically deletes the last character.

(Problem to be solved by the invention) When printing English or German text using a typewriter, words are often connected with a hyphen, but due to a typo, one word may be If a mistake is made in printing, the word must be erased and reprinted.

The printing device described in the above publication treats a series of character strings separated by leading and trailing spaces as words, and automatically deletes these words. will be deleted as one word.

In this case, even if only one of the two sets of words is incorrectly printed, both words and the hyphen will be erased and reprinted, so the correct word will be unnecessarily erased and printed. There is a problem in that work efficiency decreases.

(Object of the Invention) An object of the present invention is to provide a printing device that can erase words connected by a hyphen and only one of the words together with the hyphen or leave the hyphen intact.

(Means for Solving the Problems) As shown in the functional block diagram of FIG. 1, the printing device according to the first invention of the present application prints characters or symbols, etc. corresponding to input data on printing paper. a print data memory that stores the printed data in correspondence with the print position; a current position memory that stores the current position of the print head of the printing mechanism in correspondence with the print position; and a word deletion command signal. In the word erasable printing device, the word erasable printing device has a word erasing mechanism that starts operation upon input and sequentially erases characters printed by the printing mechanism to erase a word made up of a set of characters; When received, the print data memory and current position memory
One print position above the first character or one of the last characters for a word, including the character at the print position corresponding to the print head
a detection means for detecting whether or not there is a hyphen at a lower printing position; and a control means for outputting a control signal for erasing the hyphen at the printing position to the erasing mechanism based on a signal from the detection means. It was established.

As shown in the functional block diagram of FIG. 1, the printing device according to the second invention of the present application, in the printing device having the same prerequisite configuration as the first invention, when receiving the word erasure command signal, and current position memory to detect whether or not there is a hyphen at a print position one position above the first character or one position below the last character for a word containing a character at a print position corresponding to the print head. A detection means is provided, and a control means is provided for outputting a control signal for not erasing the hyphen at the printing position to the erasing mechanism based on a signal from the detection means.

(Function) Since the printing device according to the first invention of the present application is configured as described above, the print data memory stores the data printed on the print paper by the printing mechanism in correspondence with the print position, and the current position memory stores the current position of the print head in correspondence with the print position.

When the erasing mechanism receives the word erasing command signal, it erases the word containing the character at the print position corresponding to the print head based on the data in the print data memory and the data in the current position memory. When the detection means receives a word erasure command signal during this erasing, the detection means detects the word containing the character at the print position corresponding to the print head at the print position one position above the first character or one position below the last character. Detects whether there is a hyphen in .

Then, the control means outputs a control signal for erasing the hyphen detected by the detection means to the erasing mechanism, and the word corresponding to the print head and the hyphens before and after the word are erased.

The printing device according to the second invention of the present application operates in the same manner as the first invention, but differs in the following points.

That is, the control means outputs a control signal to the erasing mechanism that does not erase the hyphen detected by the detection means, so that only the word corresponding to the print head is erased, and the hyphen remains unerased.

(Effects of the Invention) According to the printing device according to the first invention of the present application, as explained above, since it is configured to detect a hyphen following the upper part of a word or a hyphen following the lower part of a word, it is possible to detect hyphens connected by a hyphen. The erasing mechanism can be controlled so as to erase only one word out of a plurality of words, thereby increasing work efficiency when correcting an incorrectly printed word. Furthermore, since the hyphen is deleted together with the - word, it is advantageous in terms of space when erasing the incorrectly printed word and correcting and printing a word with a larger number of characters by changing the printing pitch.

According to the printing device according to the second invention of the present application, similarly to the first invention, the erasing mechanism is controlled to erase only one word out of a plurality of words connected by a hyphen, and the incorrectly printed word is corrected. You can improve your work efficiency. Furthermore, since the hyphen is not erased when erasing a word, it is possible to eliminate unnecessary operations such as accidentally erasing the hyphen and reprinting when there is no need to erase the hyphen.

(First example) Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, the present invention is applied to an electronic typewriter 1, and by operating the erase command key 23 provided on the keyboard 3 of the typewriter 1, a word (hereinafter referred to as Words) are erased by an erasing mechanism equipped with a correction ribbon.

As shown in FIG. 1, a keyboard 3 is disposed at the front of the frame 2 of the typewriter I, and a printing machine 91 P M is disposed within the frame 2 behind the keyboard 3.

The keyboard 3 is provided with the following various keys. That is, alphabet keys 4 are used to input each letter of the alphabet, numeric keys 5 are used to input numbers O to 9, and symbol keys 6 are used to input hyphens, etc.
Character keys including , space key 7, backspace key 8, return key 9, shift key 10, code key 1
), left margin set key 12, right margin set key 13, tab set key 14, tab clear key 15, tab key 16, paper feed key 18, return key 19, reheat key 20, indicating the data input position on the display 21 to be described later. Cursor movement key 22 for moving the cursor, erase command key 23 for outputting an erase command signal
etc. The functions obtained by operating the various function keys described above are the same as those of existing typewriters, so the description thereof will be omitted.

A display 21 is provided at the rear of the keyboard 3 for displaying characters and symbols input by operating the character keys 4, 5, 6, the space key 7, and the like. The platen 24 is arranged to face the left and right direction of the frame 2,
It is rotated automatically or manually by a platen drive motor 25 or a platen knob 26 to feed the printing paper 17.

The carriage 27 also has two guide rods 29 and 3 provided parallel to the platen shaft 28, as shown in FIG.
0 and is reciprocated along the platen 24 by a wire 32 driven by a carriage drive motor 31. Furthermore, a type wheel drive motor 34 for driving a type wheel 33 is disposed on the carriage 27, and a type wheel 33 accommodated in a wheel cassette 35 is detachably attached to the motor shaft as shown in FIG. The type 36 at the tip of the selected spoke of the type wheel 33 is set in a printing position facing the printing hammer 37. The printing hammer 37 is mounted on the top of the carriage 27, and its printing hammer solenoid 38 is driven by a drive current from a printing hammer driver 39, which will be described later.
The type 36 set in the printing position is printed on the printing paper 17.
It is designed to hit.

A ribbon cassette 41 that supplies the printing ribbon 40 is placed on a holder 42, and the front end of the holder 42 is rotatably attached to the carriage 27. Print ribbon 40 is supplied from a supply spool of ribbon cassette 41 and wound onto a take-up spool driven by ribbon feed motor 43 . Further, a correction ribbon 44 is provided at a lower portion at the rear of the holder 42 . That is, a supply spool for supplying the correction ribbon 44 is provided on the right side of the ribbon cassette 41, and a take-up spool for winding the correction ribbon 44 is provided on the left side of the ribbon cassette 41.

Furthermore, there is a printing position where the printing ribbon 40 is located between the type 36 of the printing position and the platen 24 (see FIG. 3), and a retracted position where the printing ribbon 40 is moved below the printing position (path shown). In order to switch the position of the correction ribbon 44 to the correction position (see FIG. 4) in which the correction ribbon 44 is located between the print position 36 and the platen 24, a drive shaft (not shown) is rotated by a ribbon lift motor 45. A cam mechanism (path shown) is attached to the carriage 27 and is interlocked with the cam mechanism (path shown) and swings the holder 42 to the three positions.

Further, the carriage 27 and the holder 42 are provided with a well-known correction ribbon winding mechanism (path shown) for winding the correction ribbon 44 from the supply spool to the take-up spool as the holder 42 swings to the correction position. It is provided.

Therefore, the printing mechanism PM includes the platen 24 and the platen drive device, the carriage 27 and the carriage drive device,
a type wheel 33 and a type wheel drive device, a print ribbon 40 and a ribbon feed drive device, a print ribbon 40,
It is composed of a cam mechanism that swings the correction ribbon 44 to the printing position, its drive 'AW, a printing hammer 37, a printing hammer driving device, etc., and each driving device of the printing mechanism is connected to a CPU (central processing unit) 46 of a control device. It is connected.

Next, the overall configuration of the control system of this typewriter 1 will be explained based on the block diagram of FIG. 5.

The driving devices for the printing mechanism PM include a platen drive motor 25 and its driver 47, a carriage drive motor 31 and its driver 48, a ribbon feed motor 43 and its driver 49, and a ribbon lift motor 45 and its driver 50. , a type wheel drive motor 34 and its driver 51, a printing hammer solenoid 38 and its driver 39, and the like.

The display device is composed of a display 21 consisting of a liquid crystal display and a display controller 52. The display controller 52 stores display data for displaying characters, etc. on the display 21 in correspondence with code data of each character or symbol. The display controller 52 outputs display data corresponding to code data input to the display controller 52 to the display 21.

The control device C includes a CPU 46, a ROM (read only memory) 53 and a RAM connected to the CPU 46.
(random access memory) 54, and the keyboard 3, each of the drivers 39, 47 to 51 of the driving device, and a display controller 52 are connected to the CPU 4G.

The ROM 53 contains character keys 4, 5, and
Each motor 25, 31, 34, 43, 45 of the printing mechanism PM corresponds to code data such as each character inputted from 6 and space key 7, or code data read from the print data memory 1) 0 described later. and a control program for controlling the printing hammer solenoid 38 and the display 21, and a control program for controlling the respective motors 25 and 31 in correspondence with code data for each function inputted from various function keys on the keyboard 3.
・A program memory 10 in which a control program for controlling 34, 43, 45 and the print hammer solenoid 38, a control program for word erasure control to be described later, etc. are stored.
0 is set.

The RAM 54 includes a print data memory 1)0 that sequentially stores printed data in correspondence with the print position, and a current position memory 1)2 that stores the current position of the carriage 27 in correspondence with the print position. , a type position memory 1) 4 that stores the spoke number of the type 36 at the current rotation angle position of the type wheel 33, that is, the print position, and a CPU.
Various types of memories are provided to temporarily store the results of the arithmetic processing at 46.

The CPU 46 uses character keys 4, 5, and 6 of the keyboard 3.
and the printing mechanism PM prints on the printing paper 17 based on the code data corresponding to each character or symbol such as alphabets, numbers, spaces, etc. input from the space key 7,
The printed data is stored in RAM 5 in correspondence with the printing position.
4 print data memory 1) While storing sequentially in 0,
Carriage drive motor 31 and type wheel drive motor 3
The data of the current position that changes every time the 4 is driven is stored in the RAM 54.
The current position memory 1) 2 and the type position memory 1) 4 are stored. Further, the CPU 46 processes the code data input from various function keys of the keyboard 3 using the control program read from the program memory 100 of the ROM 53, and sends a control signal corresponding to the input code data to each driver of the printing mechanism PM. 39, 47 to 51 and the display controller 52.

Further, the CPU 46 processes the code data manually entered from the character keys 4, 5, 6 and the space key 7 or the code data such as characters read from the print data memory 1) 0 using the control program read from the program memory 100. . Thereby, a control signal corresponding to the code data is output to each driver 39, 47 to 51 of the printing mechanism PM and the display controller 52, thereby controlling the printing mechanism PM and the display device. That is, when controlling the printing mechanism PM based on code data, a control signal is output from the CPU 46 to the type wheel drive motor driver 51, and a drive current is output from the type wheel drive motor driver 51 to the type wheel drive motor 34. Then, the type wheel drive motor 34 rotates by a predetermined angle, and the type 36 of the type wheel 33 corresponding to the code data is set to the printing position in front of the print hammer 37, and at the same time, the CPU
A control signal is output from 46 to the ribbon lift motor driver 50, and a drive current is output from the motor driver 50 to the ribbon lift motor 45.
5, the holder 42 and the printing ribbon 40 are swing-driven to the printing position shown in FIG. 3 via the drive shaft and the cam mechanism.

Next, the CPU 46 sends the print hammer solenoid driver 3
When a control signal is output to the print hammer solenoid driver 39 , a drive current is output from the print hammer solenoid driver 39 to the print hammer solenoid 38 , the print hammer 37 hits the type 36 of the type wheel 33 , and characters and symbols are printed on the print paper 17 . It will be printed.

Then, if there is no next key manpower within the specified time, (
::A control signal is output from the PU 46 to the ribbon lift motor driver 50, the ribbon lift motor 45 rotates, and the holder 42 and print ribbon 40 are returned to the retracted position.

Furthermore, the carriage drive motor driver 4 is sent from the CPU 46.
Control signals are output to the ribbon feeding motor driver 8 and the ribbon feeding motor driver 49, respectively.

On the other hand, a drive current is output from the carriage drive motor driver 48 to the carriage drive motor 31, the drive motor 31 rotates by a predetermined amount, and the carriage 27 is moved in the printing direction by one character via the carriage drive wire 32. On the other hand, a drive current is output from the ribbon feed motor driver 49 to the ribbon feed motor 43, and the ribbon feed motor 43 rotates by a predetermined amount to feed the printing ribbon 40.

Further, when the return key 9 is operated, the CPU 46 transfers the code data from the keyboard 3 to the program memory lOO.
A control signal is output to the carriage drive motor driver 48 and the platen drive motor driver 47 by processing with the control program read from the control program. Then, a drive current is output from the carriage drive motor driver 48 to the carriage drive motor 31, and the drive motor 31 rotates in the reverse direction to return the carriage 27 to the print starting position. At the same time, a drive current is output from the platen drive motor driver 47 to the platen drive motor 25, and the drive motor 25 rotates by a predetermined amount to feed the printing paper 17 by one line.

Furthermore, when erasing characters by operating the erasure command key 23,
When the CPU 46 reads a word erasure control program from the program memory 100 and outputs a control signal to the ribbon lift motor driver 50, the ribbon lift motor 45
is rotated to swing the holder 42 to the corrected position shown in FIG. Then, the CPU 46 prints data memory 1)0.
The last data is read out, a control signal is output to the type wheel drive motor driver 51, the type wheel drive motor 34 rotates the type wheel 33, and the type 36 that is the same as the character or symbol to be erased is located at the printing position. The printing hammer solenoid 38 is driven by the drive current from the printing hammer driver 39, and the printing hammer 37 is struck, thereby erasing the printed characters.

Next, word erase control according to an embodiment of the first invention will be described. This word erasure control is applied when two words are printed consecutively with a hyphen, and although the hyphen is a delimiter between words, it is treated as a character and preceded by a hyphen, just like other symbols. When erasing a preceding word, the hyphen is also erased.

First, an outline of the word erase control will be explained in order to make it easier to understand the flowchart of the word erase control.

As an example, FIG. 6 schematically shows the character string rEXANPLE-TYPE1j printed with the leading word preceding the hyphen (9th digit) misspelled as rEXANPLEJ and the data in the print data memory 1)0. , and spaces are inserted in the first and fifteenth digits, respectively.

To erase the preceding word rEXANPL'EJ, position the print head at any of the 2nd to 9th digit printing positions and operate the erase command key 23, the print head will move to the hyphen printing position of the 9th digit. and move from the 9th digit to the 2nd digit.
The hyphens are deleted one after another across the digits.

Also, rTYPEIJ of the subsequent word following the hyphen.
When erasing, place the print head at any of the 10th to 15th digit printing positions, operate the erase command key 23, the print head moves to the 14th digit printing position,
The data is erased sequentially from the 14th digit to the 10th digit.

Next, a flowchart of word erasure control performed by the control device of this electronic typewriter will be described with reference to FIG.

When the erase command key 23 is operated, the CPU
When the word erasure order signal is output to 46, step St(
(hereinafter simply referred to as 81 and other steps are treated similarly) is executed, and in Sl, the current position of the print head is determined based on the data in the current position memory 1) 2 and the data in the print data memory 1) 0. It is determined whether there is a character (printed or not) at the current position, and if there is a character at the current position, the process moves to S8, and if there is no character, the process moves to S2.

In S2, it is determined whether or not there is a character at the next higher printing position (in the opposite direction to the printing direction), and if there is no character, the process moves to S20. In other words, the case where there are no characters at the current position and the next higher printing position means, for example, in FIG. 6, if the print head is at a printing position after the 16th digit printing position after the 15th digit space, or Alternatively, there is a case where the print head corresponds to the space of the first digit and the upper side thereof is the left margin, and in these cases, an alarm is displayed on the buzzer, alarm lamp, etc. in S20 and the process ends.

If the determination result in S2 is YES (if there is a character in the next higher printing position), that is, the print head is positioned one space lower than the last character of the subsequent word (the 15th digit in Figure 6). ), the process moves to S3.

Steps 83 to S7 are steps for sequentially erasing characters one by one from the last character to the higher order side. Move it to the upper printing position. Then, in S4, the printed character is erased by printing the same character over the printed character at the print position corresponding to the current print head via the correction ribbon 44, and in the next step 85, the printed character is erased in S4. The data in print data memory 1) 0 corresponding to the print character is erased.

In the next step 86, 1 of the current position of the print head is
It is determined whether or not there is a character in the upper printing position. If there is a character, the process moves to S7, and if there is no character (at the second digit in FIG. 6), the control is terminated. Furthermore, in S7, it is determined whether or not the print position one position above the current position of the print head is a hyphen. If it is not a hyphen, the process returns to S3, and if it is a hyphen (at the 1st O digit in FIG. 6), ends control.

If the subsequent word is a word consisting of multiple characters, steps 83 to S7 are repeated and the printed characters corresponding to the erased printed characters are sequentially erased up to the first printed character of the subsequent word. Data memory 1) Data in 0 is sequentially erased. Also, when the print head reaches the printing position of the first character of the subsequent word and the erasure is completed to the first character,
In S7, it is determined that the next higher printing position is a hyphen, and the erasure control ends.

Furthermore, when the erase command key 23 is operated with the print head positioned at a print position corresponding to any printed character in the preceding word or any printed character or hyphen in the subsequent word, a character is placed at the current position in Sl. In S8, it is determined whether the current position of the print head is a hyphen, and if it is a hyphen (at the printing position of the 9th digit in FIG. 6), the process moves to S8.
If it is not a hyphen, the process moves to S9.

In S9, it is determined whether or not there is a character at the next lower printing position (printing direction), and if there is no character at the one lower printing position (at the 14th digit printing position in ), it moves to S4, and when there is a character, it moves to S4.
10, the carriage 27 is moved to the next lower printing position, and the process returns to S8.

Therefore, if the word is a string consisting of multiple characters,
88 to SIO are repeated, and the print head sequentially moves to the lower side. Then, when the print head comes to the print position of the hyphen on the lower side of the last character of the preceding word, the process moves from 88 to 34, and when the print head comes to the print position of the last character of the succeeding word, the process moves from 89 to 84.

Then, by repeating steps 84 to S7 and S3, in the same way as above, go back one character at a time from the hyphen on the lower side of the last character of the preceding word to the first character of the word.
Alternatively, the control ends when the data is erased one character at a time from the last character of the subsequent word to the first character of the word.

As described above, when erasing the preceding word preceding the hyphen, the hyphen is also erased, and when erasing the subsequent word following the hyphen, only the subsequent word is erased.

After the preceding or following word is erased, the print head moves to the beginning of each erased word, so that it can be reprinted with the correct spelling.

(Second Embodiment) By the way, the word erasure control routine in the above embodiment is partially modified as shown in FIG. It may also be configured so that the information is deleted by

That is, the word erase control routine of this second embodiment will be explained based on flowchart 1 in FIG.
Since steps 1 to S6 and S20 are the same as those in the flowchart of FIG. 7, their explanations will be omitted.

If the determination result in S6 is YES, that is, if there is a character at the print position one position above the current position of the print head, the process moves to Sll, where it is determined whether the character just erased is a hyphen or not, and the hyphen is erased. When it is a hyphen, the control ends, and when it is not a hyphen, the process returns to S3.

Furthermore, if there is a character at the current position of the print head when the erase command key 23 is operated, the process moves from Sl to 312, and in S12, it is determined whether or not the current position of the print head is a hyphen. At some point (at the printing position of the 9th digit in FIG. 6), the process moves to S15,
If it is not a hyphen, the process moves to S13. Then, in S13, it is determined whether or not there is a character at the next lower printing position (printing direction), and if there is a character at the next lower printing position, the process moves to S14, and if there is no character ( (When it is at the printing position of the 14th digit in Figure 6)
Then, the process moves to S4.

In S14, it is determined whether or not the next lower printing position is a hyphen. If it is a hyphen, the process moves to S4, and if it is not a hyphen, the process moves to S15. In S15, the carriage moves to the next lower printing position. , and returns to S13.

S13 to S15 are repeated, and the print head sequentially moves to the lower side. Therefore, when the erase command key 23 is operated, if the print head is in the hyphen printing position, the carriage 27 moves sequentially to the lower side, and when it reaches the position of the last character of the subsequent word, it moves from 313 to 34. Transition. Then, by repeating S4 to S6, Sll, and S3, the printed characters of the subsequent word are erased one by one from the end, and the process ends when the erasure up to the hyphen is completed.

On the other hand, when the erase command key 23 is operated, if the print head corresponds to any character in the preceding word, S
1 and 312, 313 to S15 are repeated, and the print head moves to the lower side in order. When the print head reaches the position of the last character of the preceding word, it moves from 314 to 84, and then S4 to S6, Sl
1 and S3 are repeated, and when erasing from the last character to the first character of the preceding word is completed, the determination result in S6 is N.

The control ends.

Also, when the erase command key 23 is operated, if the print head corresponds to any character in the subsequent word, the steps 813 to S15 are repeated in the same way as above to move to the lower side in order, and print When the head reaches the position of the last character of the following word, it moves from 313 to 84, and then S4 to S6, Sll, S
3 is repeated, and when the deletion from the last character of the subsequent word to the hyphen is completed, the determination result in Sll becomes Yes and the control ends.

(Third Embodiment) In addition, the word erasure control routine in the first embodiment is partially modified as shown in FIG. It may also be configured to always delete hyphens when deleting .

The word erase control routine of this third embodiment differs from the flowchart of FIG. 7 only in S16. That is, 8
In step 16, it is determined whether or not the character just erased is a hyphen. If the answer is No, the process returns to S3, and if the answer is Yes, the control ends.

In short, when deleting a preceding word, it deletes in order from the hyphen to the first character of this word, and when deleting a subsequent word, it deletes in order from the last character of the word to the hyphen. .

In addition, in each of the above embodiments, explanations have been given using examples in which two words are printed consecutively with a hyphen, but even if three or more words are printed consecutively with a hyphen. Needless to say, it's a good thing.

(Fourth Embodiment) Next, word erase control according to an embodiment of the second invention will be described.

This word erasure control prevents hyphens from being erased neither when erasing the preceding word nor when erasing the succeeding word. This word erasure control routine will be explained based on the flowchart of FIG. 10, but since the steps 5l-37 and S20 are the same as the flowchart of FIG. explain.

When the erase command key 23 is operated and there is a character at the current position of the print head, the process moves from Sl to 318, and then to 31B.
In , it is determined whether the current position is a hyphen, and if it is a hyphen (at the printing position of the 9th digit in FIG. 6), the process moves to S2, and if it is not a hyphen, the process moves to S19.

In S19, the print position 1 corresponding to the print head is
It is determined whether or not there is a character at the next lower printing position. If there is no character, the process moves to S4, and if there is a character, the process moves to S21. In 321, the character at the next lower printing position is checked. Determine whether or not it is a hyphen. If it is a hyphen, proceed to S4; if it is not a hyphen, proceed to S2.
Move to 2. Then, in S22, the print head is moved to the next lower printing position, and the process returns to S19.

In this way, when the erase command key 23 is operated and there is a hyphen at the print position corresponding to the print head,
The print head is moved to the position of the last character of the preceding word by steps 31B, S2, and S3, and by repeating steps 83 to S7, characters are erased one by one from the last character to the first character of the preceding word, and the corresponding print data is erased. Memory 1)
The data of 0 is also erased, and when the first character is erased, it becomes 8.
The determination result in step 6 becomes NO and the control ends.

On the other hand, when the erase command key 23 is operated, if the print head corresponds to any character in the preceding word, the S
1 and 318, repeat S19 and S21 to S22,
When the print head reaches the position of the last character of the preceding word,
By moving from 321 to 84 and repeating S4 to S7 and S3, 1 from the last character to the first character of the preceding word.
The characters are erased one by one, and the corresponding data in the print data memory 1)0 is also erased, and when the erasure of the first character is completed, the control ends.

On the other hand, when the erase command key 23 is operated, if the print head corresponds to any character in the subsequent word, the print head will pass through Sl and 318 to S19, S21 to S22.
is repeated, and when the print head reaches the position of the last character of the subsequent word, the process moves from S19 to 84, and 34 to S7 and S
By repeating step 3, characters are erased one by one from the last character to the first character of the subsequent word, and the corresponding data in the print data memory 1)0 is also erased, and when the first character has been erased, the judgment result of 37 is displayed. The result is Yes and the control ends.

As explained above, the word erasure control according to the first embodiment of the first invention erases the hyphen at the print position one position below the last character of a word together with the word.

Further, the word deletion control according to the second embodiment deletes a hyphen at a print position one position above the first character of a word together with the word. Furthermore, the word erasure control according to the third embodiment erases both the hyphen at the print position one position above the first character of the word and the hyphen at the print position one position below the last character of the word, together with the word. .

On the other hand, the word control according to the second invention is such that neither the hyphen at the print position one position above the first character of the word nor the hyphen at the print position one position below the last character of the word are erased when the word is erased. It is.

In the above embodiment, the present invention is applied to a printing device equipped with a type wheel type printing mechanism, but the present invention can be similarly applied to a printing device having a ball type type printing mechanism. I can do it.

Furthermore, the present invention can be applied in substantially the same way to a printing device equipped with a thermal head and equipped with an erasing mechanism that sequentially erases characters starting from the first character of a word using a correction ribbon or a printing ribbon. .

[Brief explanation of drawings]

FIG. 1 is a functional block diagram of the printing device of the present invention, and FIG.
Fig. 10 shows an embodiment of the present invention, Fig. 2 is a perspective view of an electronic typewriter, Fig. 3 is a longitudinal partial side view showing the main parts of the electronic typewriter, and Fig. 4 shows the holder in the corrected position. Figure 3 is a diagram equivalent to erasing printed characters with a correction ribbon; Figure 5 is a block diagram of the typewriter control system;
FIG. 6 is a diagram illustrating the relationship between printed words, printing positions, and data in the print data memory, and FIGS. 7 to 10 are flowcharts of word erasure control, respectively. C... Control device, 3... Keyboard, 23... Erase command key, 46... CPU, 24... Platen,
27...Carriage, 32...Wire, 40...
・Printing ribbon, 33・・Type wheel, 37・・
Printing hammer, 38...Printing hammer solenoid, 3
9... Print hammer solenoid driver, 44... Correction ribbon, 53... ROM, 54... RAM, 3
4. Type wheel drive motor, 51. Type wheel drive motor driver, 45. Ribbon lift motor, 50. Ribbon lift motor driver, 31.
- Carriage drive motor, 48... Carriage drive motor driver, 43... Ribbon feed motor,
49... Ribbon feed motor driver, 25... Platen drive motor, 47... Platen drive motor driver,
1) 2... Current position memory, 1) 0... Print data memory, 1) 4... Print position memory. Patent Applicant Brother Industries, Ltd. Figure 1 Figure 2 Figure 3 Procedure Supplement July 9, 1985 Notice of 1985 - No. 85684 2, Invention name printing device 3, Person making the amendment 1 Relationship with Engyu Patent applicant address 9-35, Horita-dori, Mizuho-ku, Nagoya Name (526) Brother Industries, Ltd. Katsuji Kawashima 4, Agent address 4 Nishitenma, Kita-ku, Osaka 530 Chome 5-5
No. Tokyu Marquis Umeda 5, Date of amendment order Voluntary 7, Contents of amendment + 1) Add the words (patent application pursuant to the proviso to Article 38 of the Patent Act) to the blank space at the top right of the application. (2) Add the words 2. Number of inventions stated in the claims 2 to the line next to "16 Title of invention: Printing device" in the application. (3) “20 Inventor”, “3. Patent Applicant”, “
40 Agent” □ Increase the numbers in “5. List of Attached Documents” by 1 and enter “30 Inventor,” “4. Patent Applicant,” and “5.
1. Agent” and “6. List of attached documents”.

Claims (2)

[Claims] (1) A printing mechanism that prints characters or symbols, etc. corresponding to input data on printing paper; a print data memory that stores the printed data in correspondence with printing positions; and a print head of the printing mechanism. A current position memory that stores the current position in correspondence with a printing position, and a word consisting of a set of characters that is activated by inputting a word erasure command signal and sequentially erases the characters printed by the printing mechanism. In a word erasable printing device having a word erasing mechanism for erasing a word, when the word erasing command signal is received, the print data memory and the current position memory are used to erase the first word containing the character at the print position corresponding to the print head. A detection means for detecting whether or not there is a hyphen at a printing position one position above the character or a position one position below the last character, and erasing the hyphen at the printing position based on a signal from the detection means. and control means for outputting a control signal to the erasing mechanism. (2) a printing mechanism that prints characters or symbols, etc. corresponding to input data on printing paper; a print data memory that stores the printed data in correspondence with printing positions; and a print head of the printing mechanism. A current position memory that stores the current position in correspondence with a printing position, and a word consisting of a set of characters that is activated by inputting a word erasure command signal and sequentially erases the characters printed by the printing mechanism. In a word erasable printing device having a word erasing mechanism for erasing a word, when the word erasing command signal is received, the print data memory and the current position memory are used to erase the first word containing the character at the print position corresponding to the print head. A detection means for detecting whether or not there is a hyphen at a printing position one position above the character or a position one position below the last character, and erasing the hyphen at the printing position based on a signal from the detection means. and control means for outputting a control signal to the erasing mechanism.