JPS63297083A - electronic typewriter - Google Patents

Abstract

PURPOSE:To reduce the number of times of movement of a head and rationally perform a correcting action, by a method wherein when a series of pieces of correction data are present, the head position is moved backward by an amount corresponding to the number of the pieces of correction data, and the correcting action is performed concurrently with a forward movement of the head position. CONSTITUTION:For example, in the case of correcting characters ABC previously printed, a thermal head H is moved backward by an amount corresponding to a count 3 in a count register 18a, the head H and a ribbon-pressing member 15 are moved from release positions to pressing positions, then the characters A, B, C are corrected in that order, and the head H is returned to the position of A. Thus, when printing speed is lower than key-inputting speed and correction data is present in the data in a print buffer 22 which is not yet printed, a correcting action is not performed for one character at a time, but, instead, the head position is moved backward by the amount corresponding to the number of pieces of the correction data, and the correction action is performed concurrently with a forward movement of the head position. Therefore, movement of the head H and the member 15 is required only for one time, and rational correction can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to an electronic typewriter with a collection function.

(Prior Art) As the electronic typewriter described above, there is, for example, an electronic typewriter equipped with a thermal transfer type thermal printer. In this thermal printer, the thermal head is brought into contact with the printing paper via an ink ribbon, and the ink is transferred to the printing paper by heat, and at the time of collection, the thermal head is brought into contact with the printing paper via the ink ribbon. Overlapping printing is performed due to the heat generated by the ink ribbon, and as the ink ribbon cools while running, adhesive force is generated in the ink ribbon, thereby transferring the already printed portion to the ink ribbon. In the J3 electronic typewriter equipped with such a thermal transfer printer, the character/symbol data for printing and the pressure adjustment are input by inputting the -5--<character/symbol key and correction key on the keyboard. In order to sequentially store the collection data for the
Data and correction data are sequentially read out and printing and correction operations are performed while moving the printer head forward and backward. This corrective action is performed with forward movement of the head position.

(Problems to be Solved by the Invention) However, in 1-electronic typewriter, if the printing speed of the thermal printer is slower than the manual key speed of the keyboard input operation, the data from the keyboard is accumulated and the printing process is delayed. If there was continuous collection data among the data that had not been processed, the method of erasing it one character at a time from the rear was used, resulting in wasteful operations.

That is, as shown in FIG.
When erasing characters, the collection is performed in the order of "C" → Ill to AJ, and at this time, the thermal head H
Movement of printing paper from the release position (retracted position) to the suppression position and suppression 4Q 1ffi to release position (
The moving operation to the retracted position VI) was performed for each character, and the number of movements of the head H was increased.

(Objective of the Invention) The object of the present invention is to reduce the number of head movements for correcting when the printing speed is slower than the manual speed of the key, and to perform the correcting operation more rationally. Our goal is to provide electronic typewriters.

(Means for Solving the Problems) The present invention achieves the above object, and provides a key input means having a character/double key and a collection key, and characters/symbols for printing inputted from the key input means. A storage means for sequentially storing data and correction data; and a storage means for sequentially reading out the character/symbol data and correction data stored in the storage means and performing printing and correction operations while moving the head position of the printing means back and forth. In the electronic type-like device, which is equipped with a print control means and performs a collection operation by moving the head position forward, there is continuous correction data among the data in the storage means that has not been printed by the print control means. a continuous collection data detecting means for detecting whether or not the continuous collection data is present; The main feature of the present invention is an electronic typewriter which is equipped with a corrector control means for advancing the head position and performing a correction operation corresponding to the corrector operator.

(Operation) The continuous collection data detection means detects whether or not there is continuous collection data in the data in the storage means that has not been printed by the print control means, and the collection control means detects whether there is continuous collection data. The head position of the printing means is retracted by the number of correction data, and the head position is sequentially advanced from the retracted position to perform a correction operation corresponding to the correction data.

(Example) Hereinafter, an example in which the present invention is embodied in an electronic typewriter equipped with a thermal transfer type thermal printer will be described with reference to the drawings.

FIG. 1 shows the external appearance of the electronic typewriter, in which a thermal printer 1 as a printing means is integrally provided with a keyboard 2 as a key input means. The same keyboard 2 includes a character/symbol key 3 for inputting the characters/notation J'S, and a =Rigid key 4' for printing <4t. 9 are arranged. Further, the keyboard 2 is provided with a liquid crystal display 5, on which characters, symbols, etc. manually entered by the keys are displayed.

+F1/ridge 6 of thermal blink 1 is guide bar 7
It is supported movably along the platen 8 by a printer frame 9 and is driven by a carriage drive motor 10, which will be described later, provided on the printer frame 9. A paper feed roller (not shown) is provided at the rear of the platen 8, and is driven by a roller drive motor 11, which will be described later, provided on the frame 9 to feed the printing paper P.

As shown in FIG. 2, a thermal head 1-1 is rotatably held on the kit tν ridge 6 by an arm (not shown), and the printing paper P is attached to the thermal head H and the platen 8.
will be supplied between. Further, ribbon rollers 1 to 12 are arranged on the carriage 6 so that the ink ribbon 13 is connected to the thermal head 11 and the printing paper P.
will be supplied between. On the printing surface of the thermal head 1, a plurality of heating elements 1 are arranged in a vertical line as shown in FIG.
4 are arranged, and each of the heating cords 14 is heated by energizing them.

The thermal head 1 is rotated from the release position (retracted position) shown by the dotted chain line in FIG. The ink on the ink ribbon 13 is transferred to the printing paper P by the heat generated. Similarly, the ribbon holding member 15 is rotatably supported by an arm (not shown), and is rotated from the release position (retracted position) shown by the dashed line in FIG. t is arranged at a predetermined interval from the round head H in the longitudinal direction of the platen 8. Then, this ribbon pressing member 15 passes the printing paper P through the ink ribbon 13 together with the number-mark head H.
By being pressed, the ink that was once transferred to the printing paper P adheres to the ink ribbon 13, making it possible to erase or correct the printed portion.

That is, the ink ribbon 13 used in this embodiment is coated with ink made of a component that is non-adhesive at room temperature, melts and transfers at a predetermined printing temperature, and becomes adhesive at an intermediate temperature. . Then, during printing, only the thermal head 1-1 is pressed against the printing paper P via the ink ribbon 13, and in this state, the heating element 14 is caused to generate heat at a predetermined timing while moving the thermal head 1-1. , the ink on the ink ribbon 13 is raised to the printing temperature and melted.

The ink ribbon 13 is then immediately guided away from the printing paper P, so that the melted ink is transferred to the printing paper P and printing is performed.

On the other hand, at the time of collection, the thermal head F-1 is placed opposite to the printed area to be erased, and the thermal head F-1 and the ribbon holding part 4415 are pressed against the printing paper P through the unused portion of the ink ribbon 13. Then, in the same manner as when printing, overlapping printing is performed on the already printed area -H. Then, the ink in the part that comes into contact with the printed area melts once, but cools while traveling between the thermal pad H and the ribbon holding member 15 and reaches the intermediate temperature, and the adhesive force generated at this time melts the printed area. The portion of ink is transferred onto the ink ribbon 13 in the opposite direction. Since the ink ribbon 13 is guided to be separated from the printing paper P at the position of the ribbon pressing member 15, the ink in the already printed area is removed from the ink ribbon 13.
Collection is achieved by peeling it off from the printing paper in a certain state.

The movement (rotation) of the thermal head 1 during printing and the movement (rotation) of the thermal head 1-1 and the ribbon holding member 15 during collection are controlled by a head adjustment motor 16 provided in the printer frame 9. This is done by rotating the shaft 17 in the forward or reverse direction (see Fig. 1).

Also, the ink ribbon 13 is used during printing and correction.
It is drawn out and wound up during the movement of the carriage 6 (relative movement with the platen 8).

A detailed explanation of the mechanism of the thermal blink 1 of this electronic typewriter can be easily understood by referring to Japanese Patent Application No. 1169/1983 previously filed by the applicant of the present invention.

Next, the electrical configuration of the electronic typewriter configured as J: will be explained based on FIG.

Print control means, continuous collection data detection means and =
Central processing unit (hereinafter referred to as CP) as a friction control means
A read-only memory (hereinafter referred to as U) 18 has a program memory 19 storing a control program.
ROM) 20 and a random access memory (Ly, below, RAM) 21 having various memories for temporarily storing the crushing results of CI) U3O, etc. are connected.

Then, the CPU 18 controls the printing operation and the collection operation based on the control program stored in the program memory 19. Further, the RAM 21 is provided with a print buffer 22 as a storage means, and the print buffer 22 stores a number of data corresponding to the number of characters printed in one print line on the print paper P.

Also, on the input side of CI) LJ18, the characters of keyboard 2,
Symbol key 3. When the correction key 4 is connected to and 6, the carriage drive motor 10, the roller drive motor 11, the head drive motor 16, and the heat generating cables 14 of the thermal head are connected to the output side via the drive circuits 23 to 26, respectively. It is connected.

The CPU 18 sequentially sends character/symbol data input from the character/symbol key 3 of the keyboard 2 and collection data input from the second function key 4 to the print buffer 2.
The print buffer 2 is stored in a predetermined area of the print buffer 2, and the read position is specified by the buffer pointer.
2 data are sequentially read out and printing and correction operations are performed while moving the head position of the thermal head 1 back and forth.

If the data indicated by the buffer 7 pointer is collection data, CPU A reads character/symbol data corresponding to the printed characters on the printing paper [) to be erased by the collection data from printers 1 to 22, and performs the collection. Have them do the action. At this time, the CPU
Reference numeral 18 is configured to perform a collection operation as the head position moves forward by driving the carriage drive motor 10 while keeping the thermal head 1-1 in the pressing position.

A count register 18a is provided in the Cr'lJ 18, and the register 18a counts the number of consecutive pieces of correction data in the data in the print buffer 22 that has not been printed.

Next, the operation of the electronic typewriter constructed in this way will be explained based on FIG. 5.

The CPU 18 indicates that there is unprinted data in the buffer 22 for the printer 1, but the buffer 7 pointer does not indicate the position of the most recently input data (the most significant data) in the print buffer 22. If there is unprinted data in the buffer 22, first read out the data indicated by the buffer pointer (Step 2), and then read out the data indicated by the buffer pointer (Step 2). The buffer pointer is moved to indicate unprinted data and the data is read out (step 3). Thereafter, the CPU 18 determines whether the read data is collection data (step 4), and if it is not collection data, prints the characters/symbols corresponding to the data (step 5) and returns to step 1.

Also, when the judgment in step 4 is YES, the CPU s sets the count register 18a's count register 18a value to "1".
Make it. In other words, Callan 1, which is set to "0" at initialization,
"1" is added to the value (step 6).

Then, whenever the cpuis judges whether or not there is the next unprinted data in the print buffer 22 (step 7
), if there is the next unprinted data and that data is collection data (step 8), after moving the buffer pointer (step 9), add "1" to the count value of the count register 18a. (Step 10
). Thereafter, it is determined whether there is any next unprinted data in the print buffer 22 (step 11).

If the judgment in step 11 is YES, return to step 8,
CPU_A counts the number of consecutive collection data among the unprinted data in the print buffer 22.

If the decision in steps 7.8 and 11 is NO, the CP
U'18 is the value of the print head 1 (after performing backspace operation).
Step 12), the correction operation is performed while moving forward by the count value of the count register 18a to perform continuous collection (step 13). Then, the CPU 18 retreats the head position of the thermal bed 1-1 by the count value of the register 18a to the power run 1 (step 14 of performing a backspace operation and returning to the predetermined printing position), and performs a series of correction control operations. end.

That is, for example, as shown in FIG. 3, when the printing speed is slower than the manual speed of the key and when collecting already printed characters rABCJ, the head position of the thermal head 1 is first changed from the register 18a to the register 18a. Value "3"
(The head position is moved back and the thermal head L-1 and the ribbon holding member 15 are moved from the release position to the pressing position, and in that state, after erasing A → B → C, the head of thermal head H Return the position to [A, 1 position.

As described above, according to this embodiment, if there is continuous correction data in the data in the print buffer 22 where the printing speed is slower than the key manual speed and no printing process is being performed, the correction operation is not performed one character at a time. Since the head position is moved backward by the number of data and the collection operation is performed while moving it forward, it is possible to move the thermal head I and the ribbon holding member 15 from the release position to the suppression position d, as in the conventional case. It is not necessary to move from the pressing position to the release position many times, and the thermal head 11 and the ribbon holding member 15 only need to be moved once, and a reasonable collection operation can be performed. In addition, at the time of collection 11JpH:, the head l is slightly moved relative to the platen 8 before starting overlapping printing to make the ink ribbon 13 tight.
A so-called run-up was performed, but in this embodiment, continuous collection is performed and only one run-up is required for each field.

Roughly speaking, in order to ensure that the ink transfer is completed even when the collection is completed while the head 1-1 is pressed, the head 1-1 and the platen 8 are relatively moved a lot, which is called an overrun. However, in this embodiment, even when performing continuous collection, this Δ-bar run only needs to be performed once. In addition, for typewriters that do not require a run-up/A-bar run, it is possible to compensate for mechanical backlash after backspace operation when high positional accuracy is required at the stop H1 position of the O print head only with J3. This means that it only needs to be done once when performing continuous collection.

The present invention is not limited to the above-mentioned embodiment. For example, in the above-mentioned embodiment, the number of continuous collection data in the unprinted data was counted in the count register 188M, but this register also has a buffer. The number of collection data may be determined by the movement of the pointer in the pointer box. In addition, a thermal ribbon with a heat-generating resistance layer is used in the ink layer pond, and a
The present invention may be embodied in an electronic typewriter equipped with a so-called current transfer type printing device in which a heating resistor layer partially generates heat due to contact with an fi pole to perform printing.

Further, in the above embodiment, an example in which the present invention is applied to a thermal typewriter is shown, but it is not limited to the thermal type, and can be applied to typewriters using other printing methods such as the Daisy-wheel type. The present invention can also be applied to this invention.

That is, in the past, even in continuous collection, the characters were collected sequentially from the upper digit side, so it was necessary to perform backlash correction every time the backspace operation was performed during - times of collection operations, but according to the present invention, Backlash correction only needs to be performed once after the first backspace operation for a plurality of data.

Effects of the Invention As detailed above, in the present invention, when the printing speed is slower than the manual key speed, instead of performing the correction operation one character at a time, the head position is moved backwards and downwards by a few minutes, and the correction operation is performed while avoiding the movement forward. As a result, the number of movements of the head for collection is reduced, and the collection U1 operation can be performed more rationally, which is an excellent effect.

[Brief explanation of drawings]

Fig. 1 is an external view of an electronic typewriter equipped with a thermal transfer thermal printer according to the present invention, Fig. 2 is a cross-sectional plan view of the carriage of the electronic typewriter, and Fig. 3 is a cross-sectional view of the electronic typewriter according to the present invention. 4 is an electrical block diagram showing the electrical configuration, and FIG. 5 is a flowchart 1 for explaining the operation.
.about. and FIG. 6 are explanatory diagrams for explaining the collection operation according to the conventional method. 1... Thermal printer as a printing means, 2...
Keyboard as key input means, 3...Character/symbol keys, 4...Collection keys, 18...Central processing unit (CI) as print control means, continuous collection data detection means, and collection control means) ,2
2... Pudding 1-batshua as a means of memory.

Claims (1)

[Claims] 1. Character/symbol key (3) and collection key (4)
a key input means (2) having the key input means (2); a storage means (22) for sequentially storing character/symbol data for printing and collection data for correction input from the key input means (2); and the storage means (22
) for sequentially reading out character/symbol data and correction data stored in the printing means (1) and performing printing and correction operations while moving the head position of the printing means (1) forward and backward. In an electronic typewriter that also performs a correction operation, continuous collection detects whether or not there is continuous collection data in the data in the storage means (22) that has not been printed by the print control means (18). data detection means (18), and when there is continuous collection data, the continuous collection data detection means (18) moves the head position of the printing means (1) backward by the number of collection data and sequentially detects the head position from the retreated position. An electronic typewriter characterized by comprising: a collection control means (18) for advancing the position and performing a collection operation corresponding to the collection data.