JP2527725B2 - Typewriter - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a typewriter, and more particularly to a typewriter capable of changing a character type to be printed by replacing a key panel of a keyboard.

[Prior Art] Conventionally, to change the character system for printing by an electronic typewriter, a plate on which a typeface to be changed is printed is placed on a keyboard, and the display of key switches is masked. There is something. However, when changing the character type using this plate, it is up to the user to exchange the character type, such as the type of characters that are actually printed. The system does not match the characters input from the keyboard.

[Problems to be Solved by the Invention] Therefore, every time the user changes the character system of the input characters, the user selects the plate corresponding to the character system and confirms whether it matches the typeface actually printed. Therefore, the time and effort required to change the character type has been a burden on the user.

The present invention has been made in view of the above-mentioned conventional example, and an object thereof is to provide a typewriter capable of automatically changing a character system to be printed in response to a change of an input character type or the like.

[Means for Solving Problems] In order to achieve the above object, the typewriter of the present invention has the following configuration. That is, a keyboard having a plurality of keys for inputting document information, and a key panel mountable on the keyboard,
A key panel, which is individually set according to different character systems, is printed with characters or the like for associating the keyboard keys with the character types of the character systems, and has a specifying unit for specifying the type of the character system, Different from recognition means for recognizing the type of the character system specified by the specifying means of the key panel on the keyboard, and change detection means for detecting whether the key panel placed on the keyboard has been changed. A plurality of type wheels corresponding to the character system, a type discriminating means for discriminating the type of the mounted type wheel, and the recognizing means for recognizing when the change detecting means detects that the key panel has been changed. Determining means for determining whether the type of the written character system and the type of the type wheel determined by the type determining means match, When it is determined that the steps do not match, there is a type wheel discriminating unit that discriminates whether or not there is a type wheel corresponding to the type of the character system recognized by the recognizing unit among the plurality of type wheel, and the type wheel discriminating unit. When it is determined that there is the corresponding type wheel, the exchanging means for exchanging the currently mounted type wheel with the corresponding type wheel discriminated by the type wheel discriminating means, and the type wheel discriminating means. Error display means for displaying an error when the means determines that there is no corresponding type wheel.

[Operation] In the above configuration, when it is detected that the key panel mountable on the keyboard having a plurality of keys for inputting document information has been changed, the type of character system recognized by the recognition means, and When it is judged that the type of the type wheel installed is the same, and when it is determined that they are not the same, whether there is a type wheel corresponding to the type of character system recognized by the recognition means among the multiple wheels. When it is determined that the corresponding type wheel is present, the currently installed type wheel is replaced with the corresponding type wheel determined by the type wheel determining means, and there is no corresponding type wheel. When it is determined that the error is displayed, it operates.

Embodiments Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[Description of Configuration of Electronic Typewriter (FIG. 1)] FIG. 1 is a configuration diagram of the electronic typewriter of the present embodiment.

In the figure, reference numeral 100 is a keyboard equipped with a character key for inputting document information to be printed, a function key for instructing carriage return, paper feeding, and the like. A display unit 101 displays input document information and various statuses. 102 is a panel switch for detecting the type of key panel described later, and the control unit 105 recognizes the type of character of the keyboard 100 by the pressed state, drives the wheel exchange unit 104, and prints the corresponding character of the printer unit 103. Select the wheel and install it.

Reference numeral 103 denotes a printer unit that performs a printing operation corresponding to a key input from the keyboard 100, and is a type printer that performs printing using a type wheel in this embodiment. Reference numeral 104 denotes a wheel exchanging unit for exchanging the type wheel according to a change in the pressed state of the panel switch 102 or an instruction from the keyboard 100.

Reference numeral 105 denotes a control unit that controls the entire typewriter, and includes, for example, a CPU such as a microprocessor, a ROM that stores CPU control programs and data, and a work area RAM. 106 is a memory that stores a plurality of tables corresponding to the key panel of the keyboard 100. When a key of the keyboard 100 is pressed, the CPU of the control unit 105 stores the table of the memory 106 based on the current key panel information. Browse and select the type on the type wheel that corresponds to the key code and select the printer section.
Print with 103.

[External Description of Typewriter (FIGS. 2 to 4)] FIGS. 2A and 2B are external views of the electronic typewriter of this embodiment, and FIG. 2B shows the panel 110. It shows the removed state. The same parts as those in FIG. 1 are indicated by the same symbols.

In the figure, reference numeral 1 is a type wheel which is rotated in the direction of the arrow to select a type, and a character corresponding to a key code input from the keyboard 100 is printed on the paper 3 via the ink ribbon. Reference numeral 2 is a carriage that moves in parallel with the longitudinal direction of the platen 4 to determine the printing position. 110 is a key panel for the keyboard, in which characters are printed corresponding to the keys.
This key panel 110 has a hole for identifying the key panel at a position corresponding to the panel switch 102,
It is placed on the keyboard 100 to specify the character of the key.

FIGS. 3A and 3B are views showing an example of the key panel 110.

Reference numeral 111 denotes four holes corresponding to the four panel switches 102 of the keyboard 100. When these holes are open, the corresponding switch is turned off, and when the hole is closed, the corresponding switch is turned on. Shows. 201 is a hole corresponding to the key switch, and the lower part of each hole is printed with characters and symbols input by pressing each key when the panel 200 is set.

FIG. 3B shows the panel 202 in which only the rightmost switch of the panel switch 102 is turned on.

Normally, the characters printed on the keyboard 100 are USASC
It is the character of II code, and when all the panel switches 102 are off (key panel is not placed),
The characters of this USASC II code are configured to be input.

Then, by placing the key panel 110 on the keyboard 100, the pressed state of the panel switch 102 is changed,
With this, the control unit 105 detects the type of the key panel 100,
Correspondence between codes input from the keyboard 100 and output characters.

FIG. 4A is a sectional view of the panel switch 102 portion when the panel 202 shown in FIG. 3B is placed on the keyboard 100. Of the holes corresponding to the panel switch 102 of the panel 202, the rightmost hole is dedicated, so by setting the key panel 202, the panel switch 103
Only turns on.

FIG. 4 (b) is a diagram showing the relationship between the pressed state of the four panel switches 102 and the input character form. The circle shown by the dotted line is the panel switch on, and the circle shown by the solid line is the off state. A panel switch is shown. In this way, by designating the character system of A in the case of 40 and the character system of B in the case of 41, 16 kinds of character systems can be selected depending on the state of four panel switches.

Hereinafter, the operation of replacing the type wheel in the printer unit 103 accompanying the above-described replacement of the key panel 110 will be described.

[Explanation regarding the replacement of the wheel cartridge (Fig. 5,
(FIG. 6)] FIG. 5 is a view showing a cross section of the carriage 2 and explains a mechanism of a portion for exchanging the wheel cartridge 30. In this figure, the same parts as those described above are indicated by the same symbols.

The type wheel 1 is stored in the wheel cartridge 30 and five wheel cartridges 30 themselves are stored in the wheel magazine 40 in parallel. The wheel magazine 40 can be slid into the storage stand 41 from the side and stored. A storage table shaft 42 penetrates a part of the bottom of the storage table 41. Further, a rack 43 is provided on the storage base 41. The rack 43 and the gear 44 are in mesh with each other, and the gear 44 is structured to be rotated by a motor 45. Therefore, the movement of the storage base 41 in the direction of arrow C for selecting the wheel cartridge 30 is performed by the rotation of the motor 45. When selecting the type wheel, the motor
By controlling 45, it is possible to stop at the wheel cartridge which accommodates the type wheel corresponding to the type of the key panel 110 among the five type wheel cartridges in the wheel magazine 40. In addition, the storage base 41 has a recess 50 corresponding to each of the wheel cartridges.
Is provided.

The wheel magazine 40 moves in the front-back direction of the platen 4 (arrow C
The vertical lever 46 keeps the orientation as shown in FIG. 5 while moving in the direction). A rack 47 is cut at the tip of the up / down lever 46 opposite to the part connected to the magazine 40, and is engaged with the gear 48. This gear 48 is a motor 49
It is rotated by.

FIG. 6 shows a state in which the wheel cartridge 30 is lifted upward in the state shown in FIG.

At this time, the gear 48 rotates counterclockwise by the rotation of the motor 49, and the rack 47 engaged with the gear 48 causes the up-down lever 46 to rotate clockwise around 51 and be lifted up. At this time, the wheel cartridge 30 is carried upward by the pulling member 52 attached to the end of the vertical lever 46. And until now, the counterclockwise rotation by the spring 54 of the storage base lock lever 53 is the point 55.
At that time, the pressure was interrupted by the vertical lever 46, but the vertical lever 46 was released because it was raised to the position shown in FIG. In this way, the protrusion 56 at the tip of the storage lock lever 53 is exactly the recess 50 of the storage base 41.
To fit. Here, the movement of the wheel magazine 40 in the front-back direction is completely fixed, and the position does not shift even if a small external force acts.

In FIG. 5, a bullet plate 59 and a disc portion 60 are attached to the tip of the shaft 58 of the wheel motor 57.
An annular groove is provided around the tip of 60. The entire wheel motor unit having the above-described components reciprocates in the direction of arrow D by means of the guide means. The vertical movement of the wheel cartridge 30 and the movement of this wheel motor section are linked, and the wheel motor section is
While the wheel cartridge 40 is in the wheel magazine 40, it stands by at a position away from the platen 4.
As shown in FIG. 6, when it is lifted up by the up / down lever 46 and reaches the height of the wheel motor shaft 58, this time it starts moving toward the platen 4 and finally the wheel of FIG. 7 described later. The character wheel 1 corresponding to the key panel is attached to the wheel motor 57 by fitting in the hole portion 20 at the center of the.

During the printing operation, when the wheel cartridge 30 is moved to the regular printing position by the carriage 2 being transported, a desired character is selected by the rotation of the wheel motor 57. A hammer 61 is provided on the side opposite to the platen 4 end of the spokes 21 of the type wheel 1, and this hammer 61 is driven by a solenoid 62 to strike the ends of the spokes 21. 63 is a ribbon cassette, and the ink ribbon exposed part 64
Is attached to the hammer 61 and the printing mold 24 at a position where the ink of the paper 3 can be transferred. Reference numeral 65 is a ribbon winding device, and the ink ribbon 66 is wound by the ribbon winding device 65.

When the wheel cartridge 30 is lifted upward by the up / down lever 46, if the ink ribbon 66 is slack, the protrusion of the wheel cartridge 30 may come into contact with the wheel cartridge 30. When the ink ribbon 66 is to be lifted upward, the ribbon take-up device 65 is used to slacken the ink ribbon 66 by appropriately winding the ink ribbon 66.

[Description of Type Wheel and Wheel Cartridge (FIGS. 7 to 8)] FIG. 7 (a) is a front view of the type wheel, and FIG. 7 (b).
FIG. 4 is a side view of the type wheel and a cross section taken along the line AA ′.

In the figure, the cylindrical inner peripheral surface 20 of the central hole is the type wheel 1.
The shaft of the wheel motor 57 for rotating the shaft is inserted. The back surface of the wheel 1 (on the back side of FIG. 7A) is flat from the wheel center to the tip of the spoke 21, but the front surface of the wheel 1
There is a step between the plane 22 and the plane 23, and the plane 23 is thinner than the plane 22. Spokes 21 that are thinner than the outer circumference of the flat surface 23 are spread outwardly at substantially equal angles in the circumferential direction, and a type forming die 24 is formed at the outermost end of the front spokes 21. . When printing, this type molding die
Printing is performed by hitting the back surface of 24 with a hammer or the like and pressing the type surface of the type forming die 24 onto the sheet 3 wound around the platen 4 via the ink ribbon.

FIG. 8 (a) shows a wheel cartridge having a structure in which a type wheel and a type holder for indicating the type wheel are integrated.
It is a front view of 30. The holder portion of the wheel cartridge 30 is basically composed of two parts, and the wheel front plate 31 and the wheel rear plate 32 are assembled so as to sandwich the type wheel 1. The six bosses 33 projecting from the wheel rear plate 32 are connected to each other by fitting and welding the six bosses 33 formed in the wheel front plate 31 into the six holes 34.

FIG. 8 (b) is a side view of the wheel cartridge 30 and FIG. 8 (c) is a sectional view taken along the line BB 'of FIG. 8 (a).

At the center of the wheel rear plate 32, there is a hole 35 into which the shaft of the wheel motor 57 is inserted. Wheel front plate
The outer surface 36 of 31 is completely flat. Wheel front plate
At the center of 31 is a hole 36 which is sufficiently larger than the diameter of the plane 22 of the type wheel 1, and a part of the circle is cut out like a cutout 37. Further, the flat surface 36 has six holes 34 for connection with the wheel back plate 32. Further, the wheel front plate 31 has a shape in which the upper end is indicated by a line 38, and the print wheel is directly exposed above the boundary 38 in the drawing.

[Explanation of Control Block (FIGS. 9 and 10)] FIG. 9 is a view showing a side surface of a carriage and a control block of the electronic typewriter according to the present embodiment. The same portions as those described above are designated by the same symbols. There is.

Reference numeral 70 in the drawing denotes a sensor for detecting the position of the storage rack lock lever 53, and detects whether or not the wheel cartridge 30 is attached to the wheel motor 57. In the state shown in FIG. 9, when the projecting portion 73 of the storage rack lock lever 53 shields the light transmitting portion of the sensor 70, it is judged that the wheel cartridge 57 is not attached to the wheel motor 57. 71 is a sensor amplifier that amplifies the output of the sensor 70, 105 is a CPU that controls the entire device by performing calculations, etc., a ROM that stores CPU control programs and data, and a temporary storage of data as a CPU work area It is a control unit including a RAM and the like for performing.

73 and 74 are drive circuits for the motors 49 and 45, respectively. When the wheel magazine 40 is moved in the direction of arrow E to the home position at the left end, the control unit 72 outputs a signal for rotating the motor 45 to the drive circuit 74 to transfer the wheel magazine 40 in the direction of arrow E. Let During operation of the motor 45, the control unit 105 inputs a signal from the home position sensor 76 via the sensor amplifier 77 to check whether the home position has been reached. Wheel magazine 40
When reaches the left end and the light blocking plate 75 protruding from the storage base 41 blocks the light blocking portion of the home position sensor 76, the drive signal of the motor 45 is turned off. As a result, the wheel magazine 40 is stopped at the initialization position (home position).
Reference numeral 78 is a sensor that determines the type of the magazine 40, and 80 is a sensor that determines the type of the wheel cartridge 30. Both are optical sensors of the reflection type.

FIG. 10 is a flow chart of the type wheel exchange process associated with the exchange of the key panel 110.

First, in step S1, the on / off state of the panel switch 102 is checked to check whether the pressed state of the panel switch 102 has changed, that is, whether the key panel that has been mounted up to now has been changed. When the panel 110 is not replaced, nothing is done, but when the panel 110 is replaced, the process proceeds to step S2, where the type of the key panel 110 is recognized according to the state of the panel switch 102 and stored in the RAM.
Check if it matches the character system of the type wheel 1 installed. This may be done by comparing the type information of the type wheel stored in the RAM of the control unit 105 and the state of the panel switch 102, or in order to identify the sensor 80 and the key panel that determine the type of the wheel cartridge 30. It may be compared with the output of the panel switch 102.

If the type of the type wheel 1 does not match the character system of the key panel, the process proceeds to step S3, the sensor 78 determines the type of the wheel magazine 40, and step S4 determines whether the desired type wheel is stored in the magazine. Determine. At this time, the magazine 40 may be sequentially transferred in the direction of the arrow E, and the wheel cartridge 30 may be sequentially lifted up to the position of the sensor 80 corresponding to the transfer of the magazine to determine the type of the cartridge 30. .

When there is no corresponding cartridge (printing wheel) in the magazine 40, the process proceeds to step S5 and an error is displayed on the display unit 100 or an error is displayed by sounding a buzzer or the like.

When there is a corresponding wheel, the type wheel is replaced as described with reference to FIGS. 5 and 6.

After that, when a key code is input from the keyboard 100, the control unit 105 refers to the tables 1 to n corresponding to the type of the key panel 110 in the memory 106, and the key code is the character code corresponding to the keyboard panel 110. And the printer unit 103 performs printing, and the display unit 101 displays characters.

Even for a conventional electronic typewriter with only one type wheel, if the character system of the keyboard panel does not match the type of the type wheel currently installed, enter an error message on the display unit 101. , A warning can be generated by a buzzer sound.

Further, in the present embodiment, the case of the type wheel printer has been described, but the present invention is not limited to this, and the printer unit may be a typewriter configured to perform printing in a dot matrix format such as a wire dot or a thermal printer. Of course, you can pay attention.

As described above, according to the present embodiment, by exchanging the keyboard panel on which the character system is printed, it is possible to perform the key input and the printing corresponding to the character system printed on the keyboard panel, so that the character type can be changed. It has the effect that it is easy to add or print character types.

Further, since the character wheel replacement mechanism and the panel replacement operation are linked, the character wheel replacement and the printing operation when dealing with various characters are facilitated.

[Effects of the Invention] As described above, according to the present invention, there is an effect that the system of the output character type can be automatically changed corresponding to the change of the system of the input character type.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic typewriter according to this embodiment, FIGS. 2A and 2B are perspective views showing an external appearance of a type wheel type electronic typewriter according to this embodiment, and FIGS. 3A and 3B. Is a diagram showing an example of a key panel, FIG. 4 (a) is a sectional view showing the relationship between the panel switch and the key panel, and FIG. 4 (b) is a diagram showing the relationship between the state of the panel switch and the character system, FIG. 5 is a side view of the carriage of the print wheel type printer unit of the present embodiment, FIG. 6 is a view in which the wheel cartridge is slid upward, and FIG. 7 (a) is a front view of the print wheel. 7 (b) is a cutaway sectional view of the type wheel, FIG. 8 (a) is a front view of the wheel cartridge combined with a holder for supporting the type wheel, and FIG. 8 (b) is a side view of the wheel cartridge. , FIG. 8 (c) shows the disconnection of BB ′ in FIG. 3 (a). FIG, 9 figures carriage and its control block diagram of this embodiment, FIG. 10 is a flow chart of the type wheel exchange with the exchange of the keyboard panel. In the figure, 1 ... Type wheel, 2 ... Carriage, 3 ...
Paper, 4 ... Platen, 21 ... Spoke, 24 ... Type forming mold, 30 ... Wheel cartridge, 40 ... Wheel magazine, 41 ... Storage stand, 44 ... Gear, 45 ... Motor,
46 …… up / down lever, 49 …… motor, 53 storage lock lever, 57 …… wheel motor, 61 …… hammer, 62 …… solenoid, 63 …… ribbon cassette, 66 …… ink ribbon,
70,76 …… Sensor, 73,74 …… Drive circuit, 78,80 …… Sensor, 71,77,79,81 …… Sensor amplifier, 100 …… Keyboard, 101 …… Display, 102 …… Panel switch , 103 ……
Printer section, 104 …… Wheel replacement section, 105 …… Control section,
106 …… Memory, 110,200,202 …… Key panel, 111 ……
It's a hole.

Claims (1)

(57) [Claims] 1. A keyboard having a plurality of keys for inputting document information, and a key panel mountable on the keyboard, wherein the keys of the keyboard are individually set according to different character systems. A character panel for printing characters for associating with a character type of the character system and having a specifying unit for specifying the type of the character system; and a character system specified by the specifying unit of the key panel on the keyboard. Recognition means for recognizing the type of characters, a change detection means for detecting whether the key panel placed on the keyboard has been changed, a plurality of type wheels corresponding to different character systems, and the attached type characters. A type discriminating means for discriminating the type of the wheel, and the recognizing means when the change detecting means detects that the key panel has been changed. When the determination means determines whether the type of the recognized character system and the type of the type wheel determined by the type determination means match, and the determination means determines that they do not match, A type wheel determining means for determining whether or not there is a type wheel corresponding to the type of character system recognized by the recognizing means, and when the type wheel determining means determines that there is the corresponding type wheel, it is currently mounted. An exchanging means for exchanging an existing type wheel with the corresponding type wheel discriminated by the type wheel discriminating means; and an error display when the type wheel discriminating means determines that there is no corresponding type wheel. An error display means for performing the typewriter.