JPS6354558B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a booklet printing device for printing characters, numbers, etc. on a booklet made of a plurality of sheets of paper bound together, and particularly to a booklet printing device for printing with a wire impact printing head.

Teller machines used for counter operations at banks and other financial institutions are equipped with a printing device to print transaction details on passbooks.These days, high-speed printing, low noise, and other characteristics are desired, so this printing device Wire impact dot printers came to be used in On the other hand, when printing transaction details on a passbook, it may be necessary to print them not only in black but also in red where necessary. Conventionally, therefore, ink ribbons in which two colors, red and black, are vertically divided are used, and the two-color ink ribbons are shifted in the vertical direction to selectively print red or black. However, with wire impact dot printers, the gap between the printing wire tip and the printing medium is narrow, so when printing on booklets such as bankbooks, especially horizontal bankbooks that print in a direction parallel to the seam, one of the open pages When the ink ribbon becomes thicker, the space in the ink ribbon shift direction becomes narrower, making it difficult to shift the ink ribbon, and even if the ink ribbon does not shift, there is a risk that one color of the two-color ink ribbon will come into contact with the thickened page. For this reason, conventional booklet printing devices that print on booklets such as bankbooks using wire impact printing heads,
No printing was done near the binding of the booklet, and the lines near the binding of the booklet were left as useless blank space.

Note that this type of printer is designed to maintain the tip of the print head at an appropriate position while printing. Japanese Patent Publication No. 51-33459 discloses a device for mounting a printing head so as to be able to slide in a direction perpendicular to the direction of movement of a movable base that is movable in the direction of the printing line, and a device that allows the printing head to slide relative to the movable base as described above. and a member pressed by the information carrier,
A printing device is shown that is capable of printing continuously on various information carriers having different thicknesses, and is capable of printing on information carriers that partially have different thicknesses. Tokuko Showa 53
Publication No. 46121 discloses a roller that is rotatably attached as a contact member attached to the tip of a printing head carrier. A technique has been shown in which the printing head carrier can always maintain a constant distance from the printed surface of the passbook because it rotates while tracing the top of the passbook. In addition,
It is stated that the contact member may be configured so that the portion that contacts the medium is in surface contact.

In addition, as a ribbon switching mechanism, the
There is one shown in Publication No. 37006. That is, the ink ribbon is divided into two tapes, a main tape and a sub tape, and the tape is switched by moving the part facing the platen up and down using a ribbon guide. However, since only the ink ribbon is moved, ribbon skew is likely to occur at the ribbon entrance/exit of the cassette, the ribbon engaging portion of the guide, and the ribbon abutting portion of the head, resulting in problems such as unstable operation.

The present invention aims to eliminate the above drawbacks of the conventional booklet printing device, and uses a printing head which has a plurality of independent ribbon storage means and can move only one selected ink ribbon back and forth. The ink ribbon is fed out close to the printing surface of the booklet, and unselected ink ribbons are placed at a distance from the platen equal to or more than the maximum thickness of the booklet, and the ink ribbon shift operation is performed after the print head has retreated to the above position. It is.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic perspective view showing one embodiment of a booklet printing device according to the present invention, and FIGS. 2a and 2b show other embodiments of the present invention. explain. Note that the same elements are given the same reference numerals.
The printing head 1 is movable along guide shafts 3a and 3b on the carrier 2, and the position of the tip of the head is set to A when the printing head is retracted when switching between red and black ribbons and when replacing the ribbon, and the position of the tip of the head is set to A when the printing head is retracted when the ribbon is switched between red and black and when the ribbon is replaced. The position of the print head tip during operation is B, and the position of the print head tip during printing is C.
(appropriate position). A contact member 1a that is pressed against the bankbook is attached to the tip of the print head, and the tip of the print head is maintained at a proper position C. One end of a wire 4 that controls the forward or backward movement of the print head 1 is fixed on a slide plate 5 that is integrated with the print head 1, and the wire 4 passes through a pulley 6, a pulley 7, and another pulley (not shown). , the other end is carrier Tsuji 2
Fixed on top. The support lever 8 of the pulley 7 is connected to the links 10 and 11 by a pin 9. The link 10 is rotatable about a shaft 12 and is connected to a plunger of a head retraction solenoid 13. The link 11 is rotatable around a shaft 14, and a pin 9 engages in a U-shaped groove provided at one end, and a head advancement solenoid is engaged in a U-shaped groove provided at the other end. 15
A post 18 on a link 17 that is connected to the plunger and is rotatable about an axis 16 is engaged.

In the above description, the pin 9 engages with the U-shaped groove provided at one end of the link 11.
In short, the character-shaped groove only needs to be formed as an engaging portion that allows rotation of the link 10 when the head retraction solenoid 13 is activated. Further, a tension spring 19 is applied to the post 18, and the link 17 is biased to rotate counterclockwise. Note that a tension spring 20 is hung between the carrier 2 and the slide plate 5, and the print head 1 is biased toward a platen 32, which will be described later, but the tension of the spring 19 is greater than the tension of the spring 20. It is said that A stopper 15a is attached to the head advancement solenoid 15 to regulate the position of the plunger when it is not excited by the spring 19. To explain further, when the head retraction solenoid 13 and the head advance solenoid 15 are not energized, the link 17 is activated by the spring 19.
The plunger of the head advancement solenoid 15 is pressed against the stopper 15a because the head tends to rotate counterclockwise due to the tension of the head. Print head 1 is therefore positioned at position B via link 11, pulley 7 and wire 4. Second
Figure b shows this situation.

When starting a printing operation, the head advancement solenoid 15 is first energized and the link 17 rotates clockwise. Therefore, the link 11 rotates counterclockwise, and the pulley 7 is moved in the direction of arrow a via the lever 8. Due to the movement of the pulley 7, the wire 4
moves in the direction of arrow a', and since print head 1 is biased by spring 20, platen 32
move forward in the direction of Conversely, when changing the ribbon color, the head retraction solenoid 13 is energized and the link 10 rotates clockwise. Therefore, the pulley 7 moves in the direction of the arrow b via the lever 8, and the wire 4 moves in the direction of the arrow b', and the print head 1
is indexed by this wire 4 and retreats.

In addition, in the ink ribbon shift mechanism shown in FIG. 2a, the base plate 2 of the carrier 2
Two ribbon cartridges 2 are placed on the base 21 on top a.
2 and 23 are placed one on top of the other, and are rotatable about the shaft at the tip of the arm 2b protruding from the base plate 2a. Beneath the base 21 of the ribbon cartridge is a cam follower 2 in contact with a cam 25 attached to a spline shaft 24.
6 is provided. The spline shaft 2
4 passes through an arm 27, one end of which is connected by a link 28 to a T-shaped lever 29 which connects with the plunger of the ribbon switching solenoids 30a, 30b. The lever 29 is rotated about the shaft 31 by excitation of the ribbon switching solenoid 30a or 30b.

The ribbon cartridges 22 and 23 are adapted to accommodate ink ribbons of a single color, for example, the ribbon cartridge 22 accommodates a black ink ribbon, and the other ribbon cartridge 23 accommodates a red ink ribbon. do. The ink ribbon is pulled out from the opening of one of these cartridges 22 and 23 and drawn into the opening of the other. As shown by the chain line, the printing head 1 is located in a space surrounded by the ears of the ribbon cartridges 22 and 23, and its tip faces the ink ribbon at the printing position. As the print head 1 advances toward the platen 32, the ink ribbon is pulled out as shown in the figure, and the print head 1
When the ribbon cartridge is retracted, it is pulled in by tension means within the ribbon cartridge.

The ink ribbon is selected by energizing either the ribbon switching solenoid 30a or 30b. When the ribbon switching solenoid 30b is energized, the lever 29 rotates counterclockwise.
Spline shaft 24 rotates counterclockwise via link 28 and arm 27. For this reason, cam 2
5 rotates to the position of the cam follower 26, and the ribbon cartridges 22 and 23 rotate together with the base 21 in the direction of arrow c and stop at the position shown by the solid line in the figure. Conversely, when the ribbon switching solenoid 30a is energized, the lever 29 rotates clockwise and the cam 2
5 rotates in the opposite direction to the above to rotate the cam follower 26.
The valley of the cam 25 touches the. As a result, the ribbon cartridges 22 and 23 rotate in the direction of arrow d, and the ink ribbon of the lower ribbon cartridge 23 is positioned at the printing position.

Next, the printing operation on a passbook by the printing mechanism and ribbon shift mechanism configured as described above will be explained.

Figures 3a and 3b show the switching between red and black ink ribbons in a horizontal bankbook, especially when one page is thick and the other page is thin, near the binding edge of the bankbook. .

This switching is performed as follows. Here, it is assumed that the printing head 1 is at position B as shown in FIG. 2b, and that the ink ribbon of the ribbon cartridge 23 is positioned at the printing position.

First, prior to the ribbon shifting operation, the head retracting solenoid 13 is energized, the pulley 7 moves in the direction of arrow b, the wire 4 moves in the direction of arrow b', and the print head 1 retreats from the bankbook 33. When the print head 1 retreats to position A (FIG. 2b), the ribbon switching solenoid 30b is energized, and the ribbon cartridges 22 and 23 are shifted in the direction of arrow c as shown in FIG. A ribbon cartridge 22 containing a ribbon 35 is placed opposite in front of the print head 1. During this shifting operation of the ribbon cartridges 22 and 23, the red ribbon 34 escapes to the thicker page side. 23
Since the ribbon cartridge 23 is drawn in and stretched linearly between the tips of both ears of the ribbon cartridge 23,
There is enough space between the ribbon 34 and the page surface to allow the ribbon 34 to escape without contacting the page. After the ribbon shift operation, the print head 1 is activated by the retraction solenoid 1.
3 is released and reset to position B by the spring 19. Next, head advancement solenoid 1
5 is excited, pulley 7 moves in the direction of arrow a,
Wire 4 moves in the direction of arrow a' and returns to print head 1.
advances toward the passbook 33. At this time, the black ribbon 35 comes into contact with the tip of the print head 1, and as shown in FIG.
It is pulled out as shown. In this state, printing can be performed at a location sufficiently close to the seam of the passbook 33. Here, FIG. 3a shows the contact member 1a.
It also shows that the print head is pressed against the page of the bankbook 33, and the tip of the print head is at the proper position (position C in FIG. 2b).

When printing is performed by switching the ink ribbon from black to red, contrary to the above, the same sequence as above is used. However, during ribbon shift, the ribbon switching solenoid 30a is energized, and the ribbon cartridge 22
and 23 are shifted in the direction of arrow d in FIG. 3b.

Even if the passbook 33 has a thicker page on the opposite side of the page, sufficient space is maintained between the page and the ink ribbon that is not used for printing, so it will not stain the passbook when the ribbon is shifted, or it may get stuck near the seam of the passbook. This does not mean that printing is not possible, and the same ribbon shifting and printing operations as above can be performed. In this case, the contact member 1a is pressed by the thicker page, and the print head 1 moves away from the platen 32, causing slack in the wire 4, but the spring 2
0 keeps the print head tip in the proper position (position C in Figure 2b).

In addition, when printing on a vertical passbook, the ribbon is shifted in a direction parallel to and perpendicular to the stitching of the passbook, so it is necessary to take into account the possibility of staining the passbook when shifting the ribbon. However, it goes without saying that a printing device with the above configuration can also print on a vertical bankbook.

As explained in detail in the embodiments above, according to the booklet printing device of the present invention, even if the page is horizontal and the pages on one side are thick, the ink ribbon can be switched near the binding of the bankbook, and one page can be printed. Unlike multi-colored ink ribbons, each ink ribbon has an independent ink color, so its width is narrow.
It can be printed close enough to the binding of the passbook. Further, as described above, since the ink ribbons are independent for each color of ink, it is possible to replace only the ink ribbon of a color whose life has expired, for example, by replacing only black or only red.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing one embodiment of a booklet printing device according to the present invention, and FIGS. 2a and 2b are perspective views showing another embodiment of the present invention, showing a print head advance/retreat mechanism and a ribbon shift mechanism, respectively. 3A and 3B are diagrams showing a state in which the booklet printing device of FIG. 1 prints near the binding edge of a bankbook. 1...Print head, 2...Carrier, 13
. . . Head backward solenoid, 15 .
Red ribbon, 35... Black ribbon.

Claims (1)

[Scope of Claims] 1. A printing head having a contact member at its tip that presses against a booklet to hold the tip of the printing head in an appropriate position and ribbon cartridges stacked in multiple stages are mounted on a carrier, and an ink cartridge is mounted on a carrier. In a booklet printing device that prints on a booklet on a platen by feeding out a selected ink ribbon in a direction perpendicular to the ribbon feeding direction by a movable printing head biased toward a platen, the ribbon cartridge has multiple stages. The base stacked on the base plate is rotatably supported on the base plate of the carrier, and the base is provided with a cam follower that contacts the cam attached to the spline shaft, and one end of the arm through which the end of the spline shaft passes is attached to the link. A ribbon shift mechanism is connected to one end of the T-shaped lever and the other end of the link is rotatably supported, and both ends of the T-shaped lever are connected to the plunger of the ribbon switching solenoid. One end of the wire is positioned at position A of the print head tip when the print head is retracted during printing and when replacing the ribbon, position B of the print head tip when the print head is moved back and when the tab is moved, or position C of the print head tip during printing. The printer is fixed to a slide plate movable together with the print head, the slide plate is connected to the carrier via a first spring that biases the print head toward the platen, and the other end of the wire is connected to a pulley and a slider mounted on the carrier. A support lever of the movable pulley is connected to one end of a first link by a pin, and the first link is rotatably supported on a carrier. At the same time, the other end of the second link is connected to a solenoid for retracting the printing head, and one end is provided with a pin engaging portion that allows rotation of the first link during retraction operation, and the other end is provided with a U-shaped groove. The link is rotatably supported, a third link is rotatably supported, and a post is provided at one end to engage with a U-shaped groove provided at the other end of the second link. The third link is biased in a predetermined direction via a second spring, the other end of the third link is connected to a printing head advancement solenoid, a stopper for regulating the position of the plunger is attached to the printing head advancement solenoid, and the first spring is biased in a predetermined direction. The tension of the second spring is smaller than the tension of the second spring, and when the print head advance solenoid and print head retraction solenoid are not energized, the plunger of the print head advance solenoid is pressed against the stopper and the print head is moved to the position B. A booklet printing device characterized by comprising a printing head advancement/retraction mechanism for positioning the printing head.