JPS61135778A - Printing apparatus - Google Patents

Abstract

PURPOSE:To facilitate operation when two or more of characters are corrected and to enable rapid correction printing, by shaking a support member for supporting a printing ribbon and a correction ribbon. CONSTITUTION:A first operational position, where the winding-up of only a printing ribbon is enabled by connecting a drive member 11 and a first rotation transmission mechanism 15 at the time of printing, and an operation member 34, which releases the connection the drive member 11 and the first rotation transmission mechanism 15 at the time of correction and enables the winding-up of only a correction ribbon 7 by connecting the drive member 11 and a second rotation transmission mechanism 22, are provided. Because either one of the first rotation transmission mechanism for rotating a first spool shaft and the second rotation transmission mechanism for rotating a second spool shaft is selectively connected to the drive member revolving with the movement of a carriage by the up-and-down movement of a support member, the correction ribbon is wound up at a correction ribbon selection position where the support member is present at an upper position.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a printing device in which one of the printing ribbons and the correction ribbon can be selectively placed in the printing device by swinging a support member that supports the printing ribbon and the correction ribbon. In particular, the present invention relates to a printing device characterized by a ribbon winding mechanism.

<Prior Art> Conventionally, in this type of printing device, when winding each ribbon in a carriage, each ribbon was provided with a winding mechanism, and each ribbon was driven by an independent drive source. . For example, there are five types as shown in Japanese Patent Application Laid-Open No. 5-737720.

That is, a control member having a first cam for arranging the printing ribbon on the support member at the printing position and a second cam for arranging the correction ribbon on the support member at the printing position is rotatable in forward and reverse directions. The cam is connected to a motor, and based on the rotation of the control member by the motor, the operation of the print ribbon lift mechanism and the correction ribbon lift mechanism is controlled according to the shape of each cam.

During normal printing operation, after the printing ribbon is placed at the printing position, the printing ribbon is fed by a predetermined amount.

Further, during the correction printing operation, when the correction ribbon is placed at the printing position, a predetermined amount of feed is applied to the correction ribbon.

In this conventional configuration, each of the ribbons is provided with an independent winding mechanism, and the correction ribbon is wound by rotating the take-up spool by the lifting movement of the support member.

<Problems to be Solved by the Invention> Therefore, in the carriage of such a conventional structure, it was necessary to move the entire support member up and down every seven character corrections in order to wind up the correction ribbon.

Therefore, in the case of character correction of two or more characters, there is a problem that the operation becomes complicated and the correction printing lacks speed.

Is there a problem? Means for Solving> The present invention has been made to solve the above problems, and includes a carriage movable along a platen, a ribbon cassette detachably attached to the carriage and storing a printing ribbon. , a correction ribbon removably attached to the carriage; a driving member provided on the carriage and rotationally driven in accordance with the printing operation; and winding of the driving member and the ribbon cassette. a first rotation transmission mechanism that is provided between the first spool shaft that rotates the spool and operatively connects the first spool shaft so that the first spool shaft rotates in the winding direction of the print ribbon; a second spool shaft disposed between the member and a second spool shaft for winding the correction ribbon and operatively coupling them such that the second spool shaft rotates in the winding direction of the correction ribbon; A rotation transmission mechanism, and when printing, the driving member and the first rotation transmission mechanism are connected to wind up only the printing ribbon? A first operating position in which the correction ribbon is wound only by releasing the connection between the drive member and the first rotation transmission mechanism and connecting the drive member and the second rotation transmission mechanism at the time of correction. and a drive member movable between a second operating position and a second operating position.

Function> The present invention is configured as described above, and includes a drive member that is rotated in accordance with the printing operation by the drive member that is linked to the release of the print head, and a third rotation transmission mechanism or a third rotation transmission mechanism. The connection with the second rotation transmission mechanism is released, and the drive member and the second rotation transmission mechanism or the second
The drive member and the first rotation transmission mechanism are connected to each other during printing when the support member is in the downward position, and the first rotation transmission mechanism is rotated to rotate the printing ribbon. When the support member is in the upper position during correction printing, the driving member and the second rotation transmission mechanism are connected, and the second spool A/! 1l is rotated to wind up the correction ribbon.

Embodiment> An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a plan view of the main part of a printing device having a thermal head.A platen 1 extending in the longitudinal direction is rotatably supported on the main body (not shown), and the front side of the main body is a platen 1. A rack 9 is provided which extends parallel to 1 and in its longitudinal direction.

Below the platen 1, a carriage 6 is movably supported by the left and right grips 3a of the guide par 2 extending parallel to the platen 1, and its lower surface is slidable on the guide member 40. is supported by

A head key v-ridge 39 is rotatably supported at the base end of the guide par 2 between the two gripping parts 3a.

A print head 51 facing the platen 1 is provided above the head carriage 39 .

Further, the print head 31 and the head carriage 39 are urged clockwise in FIG.
9 is controlled by a control device (not shown) and held at the printing position shown by the solid line in FIG.

Further, when the control device is released, the print head 51 together with the head carriage 39 is placed in a non-printing position shown by a chain line in the figure.

A swing @10 is inserted into the upper front part of the carriage 3, and a support member 4 is supported on the swing shaft 10 so as to be able to sing.

A ribbon cassette 5 having a printing ribbon 6 for thermal transfer is mounted on the upper surface of the support member 4 so that it can be viewed, and the printing ribbon 6 exposed from the ribbon cassette 5 is arranged opposite to the front surface of the platen 1. There is.

Further, a pair of guide rollers 8 for guiding a correction ribbon 7 for thermal transfer is disposed on the front end of the support member 4, and is supplied from a supply spout /L/ (not shown). The correction ribbon 7 is stretched between a pair of guide rollers 8 on the front surface of the platen 1, and is wound into one piece by a winding guide L'38.

1st. As shown in FIG. 2, a drive member 11 is rotatably supported on the upper surface of the carriage 3 by a shaft 14, and a drive gear 12 that constantly meshes with the rack 9 is provided on the lower outer periphery of the drive member 11. ing.

When the head carriage 39 is moved to the right (forward direction) together with the carriage 5 (C), the drive gear 12 is rotated clockwise in FIG. 1 based on the engagement with the rack 9.

On the other hand, when the head carriage 39 is moved to the left (reverse direction) together with the carriage 3, the drive gear 12 is rotated counterclockwise in FIG.

Further, a first transmission gear 13 is provided above the drive member 11.

A first rotation transmission mechanism 15 is formed between the first transmission gear 15 and the first spool shaft 21, and the support member 4 has a first rotation transmission mechanism 15 attached to the shaft 19 suspended from the top plate 4a.
A supporting piece serving as a releasing means is rotatably supported at approximately the middle portion thereof. Further, on this shaft 19, a third transmission gear 17 is rotatably provided, which is located on the support piece 18 and always meshes with the driven gear 20.

Furthermore, a first transmission gear 17 is provided on the support piece 1, which is always engaged with the third transmission gear 17 and which can be attached to and released from the first transmission gear 13 as the support piece 18 rotates when the support member 4 is in the lower printing position. 2 transmission gear 16 is rotatably supported.

A protruding piece 34 of the operating member 64 is attached to the rear end of the support piece 1.
A retaining portion 18a that can be engaged with b is integrally formed. !
In addition, the support piece 18 is biased to rotate counterclockwise in FIG. 1 by a tension spring 35.

Further, a first spool shaft 21 is fixed to the driven gear 20, and the first spool shaft 21 is rotatably supported by the top plate 4a and passes through the top plate 4&.

A connecting cylinder 37 that can be engaged with a winding pulley (not shown) of the ribbon cassette 5 is disposed at the tip thereof protruding above the top plate 4a.

On the other hand, a second rotation transmission mechanism 22 is formed between the first transmission gear 13 and the second spool shaft 50, and a shaft 28 projecting from the bottom plate 4b of the support member 4 has a second release mechanism 22. A support piece 27 serving as a means is rotatably supported.

Further, a sixth transmission gear 25 is fixed to the first transmission gear 26, which is located on the support piece 27 on the shaft 28 and is always in mesh with the driven gear 29, and is rotatable together with the first transmission gear 26. has been done.

Further, on the support piece 27, a fifth gear 24 that is always engaged with the sixth transmission gear 25 is rotatably supported.

Further, there is a gear on the support piece 27 that is always engaged with the fifth transmission gear 24 and can be engaged with and disengaged from the first transmission gear 1'5 as the support piece 27 rotates when the support member 4 is in the upper correction position. A first transmission gear 23 is rotatably supported.

And the second spool 11 is attached to the driven gear 29! d13
0 is fixed thereto, and a take-up spool 58 of the top ribbon is disposed at the tip thereof.

The actuating member 34 includes a retaining portion 34a that engages with the protruding piece 32b of the release lever 32, and a protruding piece sab that engages with the engaging portion 18a of the supporting piece 18, and is formed integrally with the supporting piece 27. It is rotatably supported by a shaft 28.

As shown in FIG. 1, a pin 3 restricts the rotation of the protruding piece 34b due to the counterclockwise biasing force of the retaining portion 18a.
A release lever 32 is rotatable at one end of a shaft 33 projecting from the carriage 3 between the actuating member 34 and the helad carriage 39, on which a lever 6 is erected on the bottom plate 4b. Supported.

The other end of the release lever 32 is provided with a protruding piece 32b that can engage and disengage the retaining part 34alC of the actuating member 34, and the intermediate part thereof is provided with a retaining part 32b that can engage with the protruding part 39a of the helad carriage 39. A section 32a is provided.

When the print head 31 and the head carriage 39 are in the non-printing position, the release lever 32 is rotated counterclockwise in FIG. be moved. Further, the support piece 18 is rotated clockwise.

When the print head 31 and the head carriage 39 are in the printing position, the release lever 32 is neutral, and the actuating member 34 is rotated clockwise by the biasing force of the tension spring 35 via the engagement portion iaa, and the protruding piece 34b is locked to the bottle 36.

Next, a printing process and a correction process in the printing apparatus configured as described above will be explained.

First, when installing the ribbon cassette 5 and the correction ribbon 7, the ribbon cassette 5 is placed on the support member 4 with the support member 4 in the lower position, the take-up spool is fitted onto the connecting tube 37, and the ribbon cassette is placed in the lower position. A print ribbon 6 exposed to the outside of the print head 5 is arranged in front of the print head 31. Next, the correction ribbon 7 from a spool (not shown) is stretched between the guide rollers 8 and 8 to complete the installation.

At the print ribbon 6 selection position, the support member 4
and the ribbon cassette 5 is in the lower position, and the printing ribbon 6
are arranged opposite to the front surface of the platen 1 (the second.
(See Figure 3).

At this time, the first transmission gear 13 and the second transmission gear 16 of the first rotation transmission mechanism 15 are arranged at substantially the same height at a charging position (see FIG. 2). The first transmission gear 23 of the second rotation transmission mechanism 22 is arranged at a position where the first transmission gear 13 is separated downward (see FIG. 3).

In this state, the print head 31 on the head carriage 39 is held in the non-printing position shown by the chain line in FIG. Rotating counterclockwise in FIG. 6, the protruding piece 32b engages with the retaining portion 3da of the f-jerking member 34, and similarly rotates the actuating member 34 counterclockwise.
The protruding piece 34b presses and rotates the engaging portion 18a of the support piece 18 clockwise against the biasing force of the tension spring 35. Therefore, as shown in FIG. 6, the meshing between the second transmission gear 16 and the first transmission gear 13 is in a released state.

Next, when a predetermined character key is pressed down, the print head 31 moves forward based on the action of the control device, and the print ribbon 6
A part of the printing paper 41 on the platen 1 is pressed against the printing paper 41 .

In this state, characters and the like are printed on the printing paper 41 by operating the print head 31 by the control device.

As the print head 31 moves forward, the pressing force of the release lever 32 acting on the operating member 34 disappears, and the operating member 3
4 becomes free to rotate, and the support piece 18 also becomes free to rotate. Then, the support piece 18 is rotated counterclockwise in FIG. 1 by the biasing force of the tension spring 35, and the second transmission gear 16 and the first transmission gear 13 are brought into meshing state. At the same time, the actuating member 34 is rotated clockwise in FIG. 1 by the retaining portion 18a of the support piece 18 via the protruding piece 34b, and its rotation is restricted by the pin 56 at a predetermined position. At this time, the rotation of the support piece 18 is also regulated via the protruding piece 34b, and the first transmission gear 15 and the second transmission gear 16 are set at the appropriate level.
maintain the condition. Therefore, when the carriage 6 and the head carriage 39 are moved in the right direction, that is, in the forward direction in FIG.
2 is rotated by a predetermined amount clockwise in the figure.

Along with this drive gear 120 times, the first to third delivery gears 1
3, 16, and 17, the driven gear 20 is rotated by a predetermined amount in the counterclockwise direction in FIG.
1. The connecting tube 37 and the printing ribbon take-up spool /L/ (not shown) are rotated, and accordingly, the printed printing ribbon 6 is wound up, and the unprinted printing ribbon 6 is paid out from the supply spool. .

When the carriage return button is pressed after the printing operation for seven lines is completed, the head carriage 39 is moved by the control device to the position indicated by the chain line in FIG. placed in position.

By moving the print head 31 to a non-printing position.

Based on the engagement with the protrusion 39a, the release lever 32
The projecting piece 32b rotates the support piece 18 clockwise in the figure via the actuating member 34, and the first
The meshing between the transmission gear 13 and the first transmission gear V13 is released.

Subsequently, the carriage 3 is moved to the left of the platen 1 to a print start position. At this time, the rack 9 and the drive gear 12
The drive gear 12 is rotated counterclockwise in FIG. 6 based on the engagement with the drive gear 12, but as described above, the rotational motion is not transmitted to the driven gear 20, and therefore the printing ribbon 6 is wound up. Never.

Next, when erasing an erroneous print, after depressing the backspace key, the user depresses the same character key as the erroneously printed character to activate a drive device (not shown).

By the operation of this drive device, the support member 4 is swung to the upper lift position, and the correction ribbon 7 is placed facing the front surface of the platen 1 (see Fig. 5). is the first transmission gear 1
3 and the second rotation transmitter ft'! 22 first transmission gear 23
(the fifth
(see figure), first transmission gear 13 and first rotation @ machine side 15
The second transmission gear 16 is disposed at a position where the second transmission gear 16 is separated upward (see FIG. 4).

In this state, the print head 31 on the upper part of the head carriage 39 is held in the non-printing position shown by the chain line in FIG.
The release lever 32 rotates counterclockwise in Fig. g, and the protrusion 3
2b rotates the support piece 27 in the counterclockwise direction in the figure together with the operating member 34, and the meshing between the first transmission gear 13 and the first transmission gear 13 is in a released state.

Then, at the same time as the user presses down the same character key as the character key on which the incorrect print was made, the print head 31
moves forward, and a part of the correction ribbon 7 is pressed against the printing paper 41 on the platen 1.

In this state, by operating the print head 51 by the control device, the correction ribbon 7 is superimposed on the erroneously printed characters, etc., and the erroneously printed characters on the printing paper 41 are erased.

As the print head 31 moves forward, the pressing force acting on the actuating member 54 via the release lever 32 disappears, and the actuating member 34 is activated by the urging force of the tension spring 35 via the engaging portion 113a and the protruding piece 34b. is rotated clockwise in FIG.

Then, the support piece 27 rotates clockwise in FIG.
Transmission gear 13 and first transmission gear 13 are brought into mesh.

Therefore, when the carriage 3 and the head carriage 39 are moved to the right in the diagram, that is, in the forward direction, due to the above-mentioned correction printing, the drive gear 12 is moved a predetermined amount clockwise in the diagram based on the engagement with the rack 9. Rotated.

With this edict gear rotating 120 times, the first. Driven gear 2 via the μth to first transmission gears 13, 23, 24, 25, 26
9 is rotated by a predetermined amount in the direction of the arrow in FIG.
The take-up spool A/38 is rotated by 30 degrees on the spool shaft.

Along with this, the printed correction ribbon 7 is wound up, and the unprinted correction ribbon 7 is let out from the supply spool.

In addition, when erasing a large number of consecutive incorrect prints,
While the support member remains in the lift position 4 minutes above, the correction printing operation and the winding operation of the correction ribbon 7 are performed continuously.
The support member 4 is not moved up and down every time a character is corrected.

After the correction printing operation is completed, the support member 4 and the ribbon cassette 5 are placed in the lower print ribbon selection position mentioned above by the operation of the drive device, and the print head 31 on the upper part of the head carriage 39 is moved to the non-position shown by the chain line in FIG. Placed at the printing position.

It should be noted that there is a drive that controls the operation of the support member 4 using the character keys and the correction key (none of which are shown). J
iTl, and head carriage 39 and print head 3
A control device for controlling 1 is configured.

Further, the present invention is not limited to the above explanation and illustrations, but can also be applied to, for example, a dot-shaped print head, a matrix-shaped print head, etc., by providing a configuration in which a driving member such as a plunger is arranged to rotate the release lever. Is it the same effect as above? It can be achieved.

It goes without saying that the drive gear can be driven by a drive gear instead of the rack.

<Effects of the Invention> As explained above, the printing device of the present invention includes a first rotation transmission mechanism for rotating a first spool shaft and a second spool shaft for a drive member that rotates as the keyer ridge moves. Since the second rotation transmission mechanism that rotates the shaft is selectively connected to either one of the upper and lower parts of the support member, the correction ribbon is wound up at the correction ribbon selection position where the support member is located above, and the correction ribbon is In the case of the above correction printing, complicated key operations can be reduced and correction printing can be performed quickly. In addition, the effects it brings are significant, such as being able to reduce operating noise during correction operations.

[Brief explanation of drawings]

FIG. 1 is a plan view of the main parts of a printing device according to an embodiment of the present invention, and FIG. 2 is a left sectional view at the printing ribbon selection position.
Figure 3 is a right sectional view of Figure 2, Figure 1 is a left sectional view at the correction ribbon selection position, Figure 5 is a right sectional view of Figure ≠, and Figure 6 is a position head at the print ribbon selection position. FIG. 1 is a plan view showing rotational transmission in a non-printing position; FIG. 1 is a plan view showing rotational transmission in the printing position of the print head of FIG. 6;
Fig. g is a plan view showing the rotational transmission in the non-printing position of the print head at the correction ribbon selection position, and Fig. 1 [F] is a plan view showing the rotational transmission in the printing position of the print head in Fig. f. DESCRIPTION OF SYMBOLS 1... Platen, 3... Carriage, 5... Ribbon cassette, 6... Printing ribbon, 7... Correction ribbon, 11... Drive member, 15... First rotation transmitter W
t, 21... first spool shaft, 22... second rotation transmission mechanism, 30... second spool shaft, 34...
Working parts. Patent application Brother Industries, Ltd. Figure 1 Figure 2 Figure 4 Figure 8 Figure 9m

Claims (1)

[Claims] A printing device comprising: a carriage that is movable along a platen; a ribbon cassette that is detachably attached to the carriage and stores a printing ribbon; and a correction ribbon that is detachably attached to the carriage. a driving member that is provided in the printer and is rotatably driven in accordance with the printing operation, and a first spool shaft that rotates the take-up spool of the ribbon cassette and the driving member, the first spool shaft that rotates the printing ribbon. a first rotation transmission mechanism operatively coupling the drive member and the correction ribbon to rotate in a winding direction; and a second rotation transmission mechanism for winding the drive member and the correction ribbon.
a second rotation transmission mechanism that is provided between the second spool shaft and the second spool shaft to operatively connect the second spool shaft to rotate in the winding direction of the correction ribbon; a first operating position in which the drive member is coupled to the first rotation transmission mechanism to enable winding of only the printing ribbon; and a first operating position in which the drive member is disconnected from the first rotation transmission mechanism during correction; and a drive member movable between the drive member and the second rotation transmission mechanism to enable winding of only the correction ribbon.