JPS62218166A - Printer capable of correcting word - Google Patents

Abstract

PURPOSE:To enable a printing head to be automatically returned to a returning position when a correcting command is stopped, by providing a word correction stopping controlling means for outputting to a printing mechanism a control signal for moving the head based on an output from a correction-controlling means when a word-correcting command signal is received. CONSTITUTION:When a correcting a misprinted word, a WORD OUT key 40 is operated to output a word-correcting command signal to a CPU 60. Based on a correction control program, the printing position of the first character of the misprinted word is detected by using data supplied from a current-position memory 104 and a printing data memory 108. After moving a thermal head 5 to the position of the first character, overprinting on the misprinted word is carried out to sequentially correct the characters of the misprinted word. When a WORD OUT STOP key 126 is operated during the movement of the head 5 to the detected first character position of the misprinted word, the head 5 is moved to an original printing position at which it has been located before the above movement. When the key 126 is operated during correction of the characters from the first position of the word, the head 5 is moved to the first position of the word.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a printing device that can be erased by mistake, and more particularly to a printing device that can stop the erasing operation while erasing a word consisting of a set of characters. .

(Prior art) When printing sentences on printing paper using a printing device such as an English 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 data manually 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 one or more consecutive printed characters separated by a space at both ends is There is a version that automatically deletes the last character.

(Problems to be Solved by the Invention) In the case of the printing device having the erasing mechanism described in the above-mentioned publication, when word erasure is started in response to the operation of the erasure command key, the erasure of the word is basically stopped. Although the erasing operation is repeated 5 ahi until the erasing operation is completed, it is quite conceivable that the erasing operation can be interrupted by operating a correction key if the erasing command key is erroneously operated.

If the printing device is equipped with an erasing mechanism that sequentially erases the last character of a word in the opposite direction to the printing direction, the erroneously erased character must be printed again from the position where erasing was stopped. Bye.

By the way, in a printing device equipped with an erasing mechanism that sequentially erases characters starting from the first character of a word, such as a printing device equipped with a thermal head, if erasing is canceled due to an erroneous operation, the erased characters will be erased immediately from the stopped position. cannot be printed again, and the user must perform the troublesome operation of operating the backspace key to move the print head to the position of the first character of the word.

In addition, if the print head is stopped while moving to the first character position of a word in response to an erroneous operation of the erase command key, it is necessary to return the print head to its original printing position by operating the relocation key or space key. There is.

(Object of the Invention) The object of the present invention is to provide an erasing mechanism that sequentially erases a printed character string from the first character to the last character, so that the character erasing operation can be stopped, and when the erasing command is canceled, the print head An object of the present invention is to provide a printing device capable of erasing characters so that the character automatically returns to the position to be returned to (the position of the first character or the original position).

(Means for Solving the Problems) A word-erasable printing device according to the present invention includes a printing mechanism that prints characters or symbols, etc. on printing paper in accordance with input data, and a printing mechanism that prints characters or symbols on printing paper in accordance with input data, and a print data memory that stores the current position of the print head of the printing mechanism 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 starts operation upon input of a word erasure command signal;
In a word erasable printing device having an erasing mechanism that erases a character string consisting of a set of characters by sequentially erasing the characters printed by the printing mechanism, when the word erasing command signal is received, the printing The data memory and current position memory output a movement control signal to the printing mechanism that moves the print head to the printing position of the first character of the character string corresponding to the print head, and then erases the first character to the last character in order. Erasing control means for outputting an erasing control signal to the erasing mechanism is provided, and the operation is started upon input of a word erasure stop command signal, and when the print head is moving toward the first character based on the output from the erasing control means. Outputs a control signal to the printing mechanism to move the print head to the initial position before inputting the word erasure command signal, or to move the print head to the printing position of the first character when the print head is moving toward the last character while erasing characters. A word erasure abort control means is provided.

(Operation) In the word erasable printing device according to the present invention, characters or symbols, etc. are printed on the printing paper by the printing mechanism in accordance with input data, and this printed data is made to correspond to the printing position. The current left position of the print head of the printing mechanism is stored in the current position memory in correspondence with the print position.

The erasure control means starts operating upon receiving the word erasure command signal, and adjusts the print head to the print head position by outputting a movement control signal to the printing mechanism based on the data in the print data memory and the data in the current position memory. Then, by outputting an erase control signal to the erasing mechanism, the character string is sequentially erased from the first character to the last character.

The word erasure abort control means starts operating upon receiving the word erasure abort command signal, and based on the output from the erasure control means, when the print head is moving toward the first character, the word erasure abort control means causes the print head to receive the word erasure command signal. A control signal is output to the printing mechanism to move the print head to the initial position before input, and when the print head is moving toward the last character while erasing characters, to move the print head to the already erased head position.

(Effects of the Invention) According to the word erasable printing device according to the present invention, during the operation of the erasing mechanism that sequentially erases the printed character string from the first character to the last character as explained above, the word erasable Since the operation can be stopped, damage caused by the erroneous operation can be minimized when the erase operation is started due to an erroneous operation.

In addition, when the erase operation is stopped, the print head automatically returns to the position that it should return to depending on the progress of the erase operation, which simplifies subsequent operations and enables efficient printing. The operation can proceed.

(Example) Hereinafter, an example in which the present invention is applied to an electronic typewriter will be described with reference to the drawings.

As shown in FIG. 2, a platen 2 is supported on the rear side of a main body case 1 of the typewriter, and a guide loft 4 extending parallel to the platen 2 is disposed in front of the platen 2. As shown in FIG. A carriage 3 is supported on the guide rod 4 so as to be movable left and right along the platen 2. Said carriage 3
A thermal head 5 is attached to the platen 2, and the position of the thermal head 5 is switched between a printing position where it is pressed against the printing paper P on the front side of the platen 2 and a non-printing position where it is separated from the printing paper P forward. ing. Further, a keyboard 10 is provided at the front of the main body case 1, and the keyboard 10 is provided with a 15-digit liquid crystal display (LCD) 1) having one short line.

Furthermore, the following operating members such as various keys and changeover switches for operating the typewriter are arranged on the keyboard 10. That is, character symbol keys including alphabet keys 12, numeric keys 13, and space key 14, bank space key 15, carriage return key 16,
Shift key 17, second shift key 18, left margin set key 19, right margin set key 20, tab set key 21, tab clear key 22, tab key 23, paper feed key 24 for feeding the printing paper P, returning the printing paper P Return key 25, repeat key 26, code key 27, first and second mode selection switches 28 and 29, insert key 30, delete key 31, display ll
Cursor movement keys 1) 4 and 1) 5 for moving the cursor 33 indicating the data input position on the top, a word out key 40 for outputting a word erasure command signal, and a word for canceling the erasing operation by the word erasure command signal. For example, the out stop key 126 may be used.

The first mode selection switch 28 is a two-position sliding switch for selecting one of two modes: typewriter mode and terminal mode.

The second mode selection switch 29 is a non-print mode,
This is a three-position sliding switch for selecting one of three modes: collection print mode and direct print mode.

Note that the other keys are provided in a normal typewriter, so their explanation will be omitted.

Furthermore, regarding the carriage feeding mechanism for reciprocating the carriage 3 having the thermal head 5 from side to side and the ribbon feeding mechanism incorporated in the carriage 3, Japanese Patent Laid-Open No. 60-87
Since the configuration is similar to that shown in Publication No. 085, a detailed explanation thereof will be omitted, but the configuration will be briefly explained.

When the thermal head 5 moves in the printing direction during printing, the take-up spool rotates and the thermal transfer ribbon is wound onto the take-up spool, but when the thermal head 5 is moved in the opposite direction to print, the thermal head 5 is By retreating to the non-printing position, the take-up spool is prevented from rotating.

Furthermore, the thermal transfer ribbon is similar to that shown in Japanese Patent Application No. 60-249762 filed by the present applicant, and can be used not only as a printing ribbon but also as a correction ribbon.

Note that the explanation of its configuration will be omitted.

Next, a control device for an electronic typewriter constructed as described above will be explained with reference to the block diagram shown in FIG. 4.

The CPU (central processing unit) 60 includes a printing mechanism 6■,
Display mechanism 62 and external interface driver L/sceiver 121 connected to external interface 63
, a keyboard t'lo, a ROM (read only memory) 64, and a RAM (random access memory) 65 are connected as shown.

The printing mechanism 61 includes a paper feed motor 66 and a paper feed motor driver 122 that drive the paper feed roller, a carriage feed motor 67 and a carriage feed motor driver 123 that move the carriage 3, and the thermal head 5 at a printing position. A switching solenoid 68 and a solenoid driver 124 that selectively switch between a non-printing position and a thermal head 5 and a thermal head driver 1) 2
It is equipped with such things as

The display mechanism 62 includes the display (liquid crystal display) 1) and a display controller 1) 3.

Further, the ROM 64 includes a pattern memory 100 in which pattern data such as each character and symbol is stored, a control program for controlling the printing mechanism 61 and the display mechanism 62, and a control program for erasing characters and characters to be described later. It also includes a program memory 102 that stores a control program and the like for stopping erasure.

The RAM 65 includes at least a thermal head 5.
Current position memory (print position pointer) 1 that stores the current position of the printer in correspondence with the print position to be printed on the printing paper P.
04, a word start position memory 106 that stores the print position of the first character of a word in word erase control and word erase abort control, which will be described later, and the position of the thermal head 5 when the erase operation is started by the word out key 40. a start position memory 125 for storing the word-out mode, and a word-out mode flag 1 that is set and 1 is written when the word-out key 40 is operated to enter the word-out mode.
27, and a print data memory 108 that stores code data input from the keyboard 10 in correspondence with print positions.
In addition, various types of temporary memory necessary for controlling the printing mechanism 61 and the display mechanism 62 are provided.

The CPU 60 causes the print data memory 108 of the RAM 65 to sequentially store code data corresponding to each character or symbol such as an alphabet, a number, or a space inputted from the character/symbol keys of the keyboard. Pattern data corresponding to these code data are sequentially read from the pattern memory 100 of the ROM 64 and output to the display controller 1) 3, the thermal head driver 1) 2, and the motor driver 123 for transporting the carriage.

Furthermore, the CPU 60 processes code data input from various function keys on the keyboard 10 using a control program read from the program memory 102 of the ROM 64, and sends control signals corresponding to the input code data to the paper feed motor driver 122 and the carriage feed. Motor driver 1
23, outputs to the solenoid driver 124 and display controller 1)3.

By the way, in the case of automatically erasing a word printed with an incorrect spelling, the present invention stops the word erasure when the word out key 40 is operated by mistake or when the instruction of the word to be erased is incorrect. The word erase control is characterized by the word erase stop control that moves the thermal head 5 to the print start position, and in order to make the explanation of the flowchart easier to understand, an outline of the word erase control and the word erase stop control will be explained first.

FIG. 5 schematically shows a character string printed with the incorrect spelling ``--Example rTHE EXANPLE'' and data in the print data memory.

When erasing the erroneously printed word rEXANPLEJ, the thermal head 5 may be moved in the printing direction by utilizing the erasing mechanism of the thermal transfer ribbon. That is, with the thermal head 5 positioned at the 13th digit Ho position or any of the 6th to 12th digit printing positions,
Operate the word out key 40 to send the word deletion command signal to CP.
Output to U60.

The CPU 60 uses data from the current position memory 104 and print data memory 108 of the RAM 65 based on the erase control program stored in the ROM 6417) program memory 102 to erase the incorrectly printed word r.
Detect the printing position of the first character of EXANPLEJ (the 6th digit printing position in the figure), move the thermal head 5 to this first character position, and then print the incorrectly printed word rEXANP.
By printing rEXANPLEJ over LEJ, the erroneously printed words are sequentially erased. At the same time, the CPU 60 erases data in the print data memory 108 corresponding to each erased character each time each printed character of the above-mentioned "rEXANPLE" is erased.

However, if the operator operates the word out key 40 to command word deletion, but then realizes that the word to be deleted is incorrect and operates the word out stop key 126, the word deletion is canceled.

In this case, the word out stop key 1 is pressed while the thermal head 5 is moving to the first position of the word detected for character erasing.
26 is operated, the thermal head 5 moves to the original printing position before the start of movement, and when the word out stop key 126 is operated while the thermal head 5 is erasing characters from the beginning position of the word, The thermal head 5 moves to the first position of the word, that is, to the sixth digit position.

In this way, when character erasing has not started, the thermal head 5 moves to the original printing position before starting movement, so printing can be continued from that printing position, and when character erasing has started, the thermal head 5 moves to the original printing position before starting the movement. moves to the beginning of the word, allowing characters to be printed again.

Note that when the word erase control and word erase stop control programs are being executed, only the word out stop key 126 is allowed to be operated, and even if the other character symbol keys and function keys are operated. It's supposed to be ignored.

Next, a flowchart for word erasure control and word erasure abort control performed by the control device of the electronic typewriter will be explained with reference to FIG.

When power is turned on to the electronic typewriter, this control is started, and the initial setting of step SL (hereinafter simply referred to as 81, and other steps are handled in the same way) is performed.
Subsequently, S2 is executed.

In S2, it is determined whether or not the key was manually operated (whether or not the key was operated), and when the key was operated, S
3, and when no key is operated, S13
Move to.

In S13, it is determined whether the mode is word-out mode, that is, erase mode (word-out mode flag 127 of RAM 65).
is set to 1), and if the word-out mode is set, the process moves to S14, and if the word-out mode is not, the process returns to S2.

Also, in S3, the word out mode flag 127
It is determined whether or not the word out mode is based on
When the word-out mode is selected, the process moves to S2 singing, and when the word-out mode is not selected, the process moves to S4.

In S4, it is determined whether or not the key operated in S2 is the word out key 40. If YES, the process moves to S5; if NO, other processing in Sll, such as a character symbol key, etc., was operated on the keyboard IO. At times, the code data is stored in the print data memory 108 of the RAM 65, and processing such as character printing and character display corresponding to the code data is performed.

In S5, it is determined based on the current position memory 104 and the print data memory 10B whether there is a character to be erased at the current position of the thermal head 5 or at a print position one position higher (in the opposite direction to the print direction). and there are characters to be erased (in Fig. 5, the thermal head 5 moves from the 6th digit to
When the character is at the 13th digit), the process moves to S6, and when there is no character to be erased, the alarm process (buzzer and lamp) of S12 is executed, and the process returns to S2.

As mentioned above, if there is no character at the current position or the print position one position above it, for example, in Figure 5, if the thermal head 5 is at the print position after the 14th digit after the 13th digit space. , or the case where the thermal head 5 corresponds to the first digit space and the upper side thereof is the left margin.

In S6, 1 is written in the word-out mode flag 127 of the RAM 65 to set the word-out mode, and in the next step 87, the current print position of the thermal head 5 is stored in the start position memory 12 based on the current position memory 104.
5 is written. Next, in step 88, the start position of the word to be erased (the position of the 6th digit in FIG. written to memory 106. Then, in SIO, based on the word head position memory 106 and current position memory 104, the printing mechanism 61 is commanded to move the thermal head 5 to the word head position, and the process returns to S2.

On the other hand, if the determination result in 513 is Yes, in S14, the current position memory 104 and the word start position memory 1 are
06, it is determined whether or not the thermal radar 5 is currently moving to the beginning position of the word, and if it is moving, S1
The process moves to 5, and when the process is not in progress, the process moves to 518.

In S15, it is determined whether or not the thermal head 5 has finished moving to the head position of the word. If the movement has not been finished, the process returns to S2, and when the movement has finished, the process returns to 31.
6 is executed, and the CPU 60 instructs the printing mechanism 61 to erase the printed characters at the position facing the thermal head 5. Then, in the next step 317, the data in the print data memory 108 corresponding to the print character erased in S16 is erased, and the process returns to S2.

In this way, when character erasing is started, S2, S1
3 and S14, the process moves to 318, and in 818, it is determined whether or not erasing of one character has been completed by the printing mechanism 61. If erasing has not been completed, the process returns to S2.

Then, S2, S13, and S until one character is erased.
14 and 318 are repeated every minute time, and when erasing of one character is completed, the judgment result in S18 becomes Yes, and in S19, the CPU 6 Q moves the thermal head 5 to the printing mechanism 61 one position lower (in the printing direction). Command to move to the printing position. In the next step S20, it is determined whether or not there is a printed character at the current position based on the current position memory 104 and print data memory 108, and if there is a printed character, the process moves to S16.

Further, when there is no character to be printed (when the thermal head 5 is at the position of the last character of the 12th digit word in FIG. 5), the process moves to 321. That is, in the case of a word consisting of multiple characters, s2, S13, S14, S18, S19
・Repeat 520-316・S17, thermal head 5
When the last character of the word is erased, the process moves to S21.

In S21, since all the printed characters of the word have been erased, the word out mode flag 12 of the RAM 65 is cleared.
A 0-t- write to 7 resets the word-out mode. Then, in the next step 822, since the word erasing has been completed, the CPU 60 sends the print mechanism 6 to the printing mechanism 6 based on the current position memory 104 and the word start position memory
1 to move the thermal head 5 to the beginning position of the word, and the process returns to S2.

On the other hand, when the determination result in S3 is Yes, that is, when the word-out mode is selected, the process moves to S23, where it is determined whether the key operated in S2 is the word-out stop key 126, and when the result is Yes, the process moves to S24. However, if the answer is NO, the process returns to S2.

In S24, 0 is written to the word-out mode flag 127 to reset the word-out mode, and in the next step 325, when the word-out mode is canceled in S24, it is determined that the thermal head 5 is moving to the beginning position of the word. It is determined whether or not the vehicle is moving, and if the vehicle is moving, step 326 is executed. At 826, since the thermal head 5 is moving to the beginning position of the word and character erasure has not yet been executed, the CPU 60 starts the thermal head 5 for the printing mechanism 61 based on the current position memory 104 and the start position memory 125. A command is given to move to the position, and the process returns to S2.

If the determination result in S25 is No, that is, if the thermal head 5 is not moving to the beginning position of the word (character erasure is being executed), the process moves to S27. S2
7, character erasing has already started, so the CPU 60 instructs the printing mechanism 61 to move the thermal head 5 to the beginning position of the word based on the current position memory 104 and the word start position memory 106. command and return to S2. At this time, if character deletion is in progress, 1
After erasing the characters, the thermal head 5 is moved to the beginning position of the word.

As described above, if the word out mode is set by operating the word out key 40, and the word out stop key 126 is operated while the thermal head 5 is moving from the current position (start position) to the beginning position of the word. , the word erasure is canceled and the thermal head 5 returns to the starting position, making it possible to continue printing from the starting position again.

Furthermore, if the word out stop key 126 is operated while character erasing is being executed with the thermal head 5, the word erasing will be canceled and the thermal head 5 will be moved to the beginning position of the word, so that it is possible to print again from the beginning character of the word. Become.

Further, even after erasing of each printed character of a word is completed, the thermal head 5 is moved to the beginning position of the word, so that it is possible to print again.

As explained above, word-out can be canceled even after a word-out (word deletion) command is issued, and when word-out is canceled, the thermal head 5 is moved to the starting position or the beginning position of the word to which it should be returned. Therefore, it is possible to minimize the damage caused when word-out is commanded by mistake.

In the above embodiment, during the erasing operation, the thermal head 5 is moved in the printing direction by one character after character erasing, as in the normal printing operation. Only when there is a printed character at the lower printing position, the thermal head 5 may be moved to that printing position to erase the character.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing the configuration of the present invention, and FIGS.
Fig. 6 shows an embodiment of the present invention, Fig. 2 is a perspective view of an electronic typewriter, Fig. 3 is a plan view of the keyboard, Fig. 4 is a block diagram of the control system of the typewriter, and Fig. 5 6 is an explanatory diagram illustrating the relationship between printed words, printing positions, and data in the print data memory, and FIG. 6 is a flowchart of a routine for word erasure control and word erasure abort control. 2...Platen, 3...Carriage, 5...Thermal head, 10...Keyboard, 40...Word out key, 60...CPU (central processing unit), 64
・・ROM (read only memory), 65・・R
AM (random access memory), 104...Current position memory, 108...Print data memory, 126
・Word out stop key. Figure 1 Figure 5 THE EXANPLE

Claims (1)

[Claims] (1) A printing mechanism that prints characters or symbols, etc. on printing paper in accordance with input data; 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 of the character in correspondence with the printing position, and a word erase command signal is input to start operation, and the characters printed by the printing mechanism are sequentially erased, thereby forming a set of characters. In a word erasable printing device having an erasing mechanism for erasing a character string, when the word erasing command signal is received, the print head is moved to the first character of the character string corresponding to the print head using the print data memory and the current position memory. an erasure control means for outputting a movement control signal to the printing mechanism to move the word to the printing position, and then outputting an erasure control signal to the erasing mechanism for erasing the first character to the last character in order; and inputting a word erasure stop command signal. Based on the output from the erasure control means, when the print head is moving toward the first character, the print head is moved to the initial position before inputting the word erasure command signal, and while the print head is erasing characters, the operation is started by A printing device capable of erasing words, characterized in that it is provided with a word erasing stop control means for outputting a control signal for moving the print head to the printing position of the first character to the printing mechanism when the print head is moving toward the last character.