JPH078227Y2 - Typewriter - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Industrial Application Field) This invention is a printing in which a printing ribbon and a correction ribbon are detachably mounted, and normal printing or correction printing is performed using the printing ribbon or the correction ribbon. The present invention relates to a typewriter having a mechanical section.

(Prior Art) Conventionally, in a typewriter of this type, while a ribbon cassette having a normal black print ribbon is still attached to a print mechanism unit, a black color is produced by another color print ribbon without providing a special mechanism. I can't find a typewriter that can print characters other than.

(Problems to be Solved by the Invention) This invention was made in consideration of the above circumstances, and its purpose is to provide a color printing ribbon with a normal printing ribbon attached to the printing mechanism section. It is to provide a convenient typewriter capable of printing.

Configuration of the Invention (Means for Solving the Problems) In order to achieve the above object, in the present invention, a color printing ribbon detachably mounted on a correction ribbon mounting portion of a printing mechanism and a correction ribbon mounting A setting means capable of setting a correction mode and a color printing mode according to the type of the ribbon attached to the printing section, and a control means for controlling the operation of the printing mechanism section based on the mode set by the setting means. There is.

(Operation and effect) Therefore, when the correction ribbon is mounted on the correction ribbon mounting portion of the printing mechanism section, the correction mode is set by the setting means, and the control means controls the operation of the printing mechanism section based on the correction mode to correct the correction mode. The printing operation is performed. On the other hand, when the color printing ribbon is loaded in the correction ribbon loading section and the color printing mode is set by the setting means, the printing mechanism is operated and controlled by the control means based on the mode, and the color printing operation is performed. Therefore, not only the correction printing but also the color printing can be performed while the normal printing ribbon is attached to the printing mechanism section, and the function is increased and it can be conveniently used.

Embodiment An embodiment embodying the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 2 and 3, a platen 2 is rotatably supported on a frame 1 of the typewriter, and a guide shaft 3 and a guide rail 4 extending in parallel with the platen 2 are installed. Guide shaft 3 and guide rail 4
The carriage 5 that constitutes the printing mechanism M is installed in the platen 2
A carriage drive motor 6 (see FIG. 1), which is a step motor, is supported so as to be movable along.

A ribbon holder 7 is swingably supported on the carriage 5 by a shaft 5a. A ribbon cassette 8 having a black print ribbon 8a is mounted on the ribbon holder 7, and a part of the print ribbon 8a is exposed so that it can run along the platen 2. On both sides of the ribbon holder 7, a pair of correction ribbon mounting pieces 9 (only one of which is shown) are projected, and a supply spool in which an unused correction ribbon 10a or a red color printing ribbon 10b is wound around these mounting pieces 9. A winding mounting spool (not shown) for winding the used ribbon 10 and the used correction ribbon 10a or color printing ribbon 10b is rotatably and detachably supported. The running portion of the correction ribbon 10a or the color print ribbon 10b between the spools 10 is arranged below the exposed portion of the print ribbon 8a.

As shown in FIG. 3, a ribbon lift cam 12 is rotatably supported on a shaft 11 mounted on a carriage 5, and one side surface of the ribbon lift cam 12 has a small diameter portion 13a and a large diameter portion 13b.
A grooved cam 13 is formed. On the other hand, the ribbon holder 7 is provided with a follow-up pin 7a that engages with the groove cam 13, and when the follow-up pin 7a is engaged with the small diameter portion 13a, the ribbon holder 7
When the print ribbon 8a is arranged at the first lift position facing the platen 2 and is engaged with the large diameter portion 13b, the correction ribbon 10a
Alternatively, the color print ribbon 10b may face the platen 2
It is located in the lift position.

The ribbon lift cam 12 is rotated by a DC motor 16 shown in FIG. 1 via a gear transmission mechanism (not shown) and a clutch mechanism 17. The clutch collar 18 constituting the clutch mechanism 17 is mounted on the shaft 11, and the clutch in the collar 18 is rotated when its rotation speed is increased through a pair of locking protrusions 18a protruding on the outer periphery at equal angular intervals. The drive transmission between the DC motor 16 and the ribbon lift cam 12 is interrupted by the action of the spring (not shown), and when the rotation of the clutch collar 18 is not restrained, the action of the clutch spring causes the rotation of the DC motor 16 to rotate. When transmitted to the cam 12, the ribbon lift cam 12 is rotated clockwise in FIG.

Under one side of the ribbon lift cam 12, the carriage 5
A trigger solenoid 19 is mounted on the top. An armature 20 is rotatably supported in the vicinity of the solenoid 19 and is urged by a spring 21 to rotate clockwise in FIG. Then, by energizing the solenoid 19, the spring 21
When the armature 20 is attracted against the biasing force of the armature 20, the tip bending portion of the armature 20 moves outward from the rotation locus of the locking projection 18a to allow the clutch collar 18 to rotate, and , When the power supply to the solenoid 19 is stopped, the spring 21
The urging force of the armature 20 causes the armature 20 to move into the locus of rotation of the locking projection 18a and restrain the rotation of the clutch collar 18.

Petal type printing wheel 2 having a large number of printing elements 22a on the outer circumference
2 is disposed on the carriage 5 close to the platen 2,
At the center thereof, it is connected to the motor shaft 23a of the type selection motor 23 (see FIG. 1). And the type selection motor 23
One type element 22a is selectively arranged at the printing position facing the platen 2 as the print head rotates, and the type element 22a is beaten by a print hammer (not shown), whereby the normal print ribbon 8a or the color print ribbon 10b is printed. Black or red characters may be printed on the printing paper P on the platen 2 via, or erroneous printing characters may be erased via the correction ribbon 10a.

As shown in FIGS. 2 and 4, on the keyboard 30, character keys 31 for inputting various character data such as alphabets and numbers and correction keys 32 for performing a correction printing operation are arranged in a row. Behind the character key 31, a liquid crystal input data display section 33 for displaying input character data
Is provided. Also, on the keyboard 30, Co / R for selectively setting the correction input mode or the red input mode
An input mode selection switch 34 is provided, and an N / R print mode selection switch 35 for selectively setting the normal print mode or the red print mode is provided, and both switches 34, 35 are provided in the vicinity thereof. Mode display lamps 36 and 37 that can blink when setting each of the above modes are provided. Then, the input data display section 33 and the mode display lamp 3
A display device 38 is constituted by 6,37.

Next, the configuration of the control system of the typewriter in this embodiment will be described. As shown in FIG. 1, a CPU (central processing unit) 40 as a setting means and a control means is a RAM having a collection buffer 41a capable of storing one row of input data.
A random access memory 41 and a ROM (read only memory) 42 storing various programs such as normal printing, correction printing and red printing programs are provided. Then, in accordance with the operation of each mode selection switch 33, 34 on the keyboard 30, the CPU 40 selectively sets each input mode and print mode, and sets each mode display lamp 36, 37 via the display controller 43. Lighting control.

Further, irrespective of the setting state of each print mode described above, when the character key 31 is operated in the state where the correction input mode is set, the CPU 40 reads the normal print program of the ROM 42. When the correction key 32 is operated in the same state, the CPU 40 reads the correction print program. Furthermore,
When the character key 31 is operated while the red input mode is set and the normal print mode is set,
The CPU 40 reads the normal print program. When the character key 31 is operated while the red input mode and the red print mode are set, the CPU 40 reads the red print program. Then, the CPU 40 controls the operation of each motor 6, 16, 23 via each motor driver 44 based on each printing program, controls the operation of the trigger solenoid 19 via the solenoid driver 45, and displays the display device 38. The operation of the input data display unit 33 is controlled via.

Next, the operation of the typewriter configured as described above will be described. The color printing ribbon is previously attached to the correction ribbon attachment piece 9.
When 10a is set and an arbitrary mode is set by the mode selection switches 34 and 35, the CPU 40 executes the key operation at step S1 in FIG. Determine the presence or absence. When the result is YES, the process proceeds to S2, and it is determined whether or not the red input mode is set. When the result is NO, that is, when the correction input mode is set in advance by the input mode selection switch 34, then in S3 and S4, it is determined whether the key operated in S1 is the correction key 32 or the character key 31. judge.

When the character key 31 is operated, the determination in S4 is YES.
Then, the CPU 40 is the character 31 operated in S6.
The normal print operation corresponding to is executed according to the normal print program in the ROM 42. That is, the printing hammer is operated while the printing element 22a is selected by the printing character selection motor 23, and the carriage 5 is intermittently moved to perform normal printing by the printing ribbon 8a.

If the correction key 32 is operated, the determination in S3 becomes YES, and the CPU
40 executes the correction printing operation in S7 according to the correction printing program of the ROM 42. That is, when the correction key 32 is operated while the carriage 5 is moved to the position corresponding to the erroneous input character in advance, the CPU 40 operates the trigger solenoid 19 to rotate the DC motor 16 to the ribbon lift cam 12. The correction ribbon is transmitted to swing the correction ribbon to the print position. At the same time, based on the data in the collection buffer 41a, the carriage 5
The printing element is selected by selecting the printing element 22a according to the data corresponding to the current position of. As a result, the type element 22a is tapped on the erroneously printed character on the printing paper P via the correction ribbon 10a, and the erroneously printed character is erased by the correction ribbon 10a. After that, if another character key 31 is operated, the correct character is printed.

When a key other than the correction key 32 or the character key 31 is operated, the process proceeds to S5, the key process corresponding to the key is executed, and the process returns to S2.

On the other hand, if the determination in S2 is YES, that is, if the red input mode has been set in advance, the process proceeds to S8, and it is determined whether the red print mode has been set. When the normal print mode is set in advance by the print mode selection switch 35, the determination in S8 is NO, and the process proceeds to S9. In S9, it is determined whether or not the key operated in the previous S1 is the correction key 32, and if YES, the CPU 40 performs an alarm process by a buzzer or the like in S10. When the determination in S9 is NO, the processes in S4 to S6 described above are performed.

Furthermore, when the red print mode is set in advance by the print mode selection switch 35, the determination in S8 becomes YES, and the process proceeds to S11. In S11 and S12, the same determinations as in S3 and S4 are performed, and when the first operated key is neither the correction key 32 nor the character 31, the key processing corresponding to the other keys is performed in S13.

On the other hand, when the first operated key is the character key 31, the red printing operation is performed in S14. That is, the trigger solenoid 19 is energized for a predetermined time, the armature 20 is attracted to the solenoid 19, and the DC motor 16 is rotationally driven while its tip is separated from the locking protrusion 18a of the clutch collar 18. The rotation is transmitted to the ribbon lift cam 12 via the clutch collar 18. As a result, the ribbon lift cam 12 is rotated once, and the groove cam 13 and the follow-up pin 7a are engaged with each other, so that the color printing ribbon 10b together with the ribbon holder 7 swings back and forth between the first lift position and the second lift position. To be done.

Then, while the color print ribbon 10b is arranged at the second lift position, after the type element 22a corresponding to the character 31 is selected by the type selection motor 23, the hammering operation is performed and the selection is performed. Type element 22a
The red character is printed on the paper P by the cooperation of the color printing ribbon 10b. After that, the used color printing ribbon 10b is wound by a well-known ribbon winding mechanism (not shown), and the carriage 5 is moved by one character pitch.

In the above embodiment, only the autocorrection operation is described as the correction printing operation, but it goes without saying that the manual correction operation is also possible.
That is, if the manual correction print mode is set based on a predetermined key operation on the keyboard 30 and then the character key 31 corresponding to the erroneous print character is operated, the correction print program is read from the ROM 42 and the carriage is read according to the program. Each member except 5 is operated in substantially the same manner as in the color printing operation. That is, after the correction printing operation, the carriage 5 is held at the correction printing position without being moved, and the correction printing operation ends.

As described above, in this embodiment, by attaching the color printing ribbon 10b to the correction ribbon attaching piece 9 in advance,
It is possible to perform printing with the color print ribbon while the normal print ribbon 8a is still attached to the print mechanism unit.
Therefore, it is possible to print an important item in color when creating a document so as to attract attention.

The invention is not limited to the above embodiment,
Correction ribbon mounting piece 9 is provided with a discrimination means for discriminating the ribbon,
A range in which the color printing mode and the correction printing mode can be automatically set by the output signal from the determining means, a color printing ribbon of a color other than red is used, etc. The configuration of each unit can be arbitrarily changed with.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control system of a typewriter embodying the present invention, FIG. 2 is a perspective view of the typewriter, and FIG.
FIG. 4 is a partially enlarged sectional view showing the printing mechanism section, FIG. 4 is an enlarged plan view of the keyboard, and FIG. 5 is a flowchart. In the figure, 8a ... Print ribbon, 9 ... Correct ribbon mounting piece, 10
a ... Correction ribbon, 10b ... Color printing ribbon, 40 ... CPU as setting means and control means, M ... Printing mechanism section.

Claims (1)

[Scope of utility model registration request] 1. A printing ribbon (8a) and a correction ribbon (10a)
In a typewriter having a printing mechanism unit (M) that is detachably mounted and that performs normal printing or correction printing using the printing ribbon (8a) or the correction ribbon (10a), the printing mechanism unit (M) The color printing ribbon (10b) detachably mounted on the correction ribbon mounting section (9) and the correction mode and the color printing mode can be set according to the type of the ribbon mounted on the correction ribbon mounting section (9). And a control unit (40) for controlling the operation of the printing mechanism section (M) based on the mode set by the setting unit (40).