JPH0872367A - Film ribbon splicing method and ribbon cassette - Google Patents

Abstract

PURPOSE: To obtain a film ribbon splicing method which can prevent turnup, tear, peeling of a splicing tape at a splicing part, and a ribbon cassette which can prevent double feed of the ribbon. CONSTITUTION: In a splicing method wherein a film ribbon 13 made of a plastic film 11 whose one face is coated with a solid ink 12 is to be spliced by a splicing tape 14, an end of the splicing tape 14 is made to be slant with respect to the longitudinal direction of the film ribbon 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film ribbon splicing method and a ribbon cassette used in a printer used as an output device such as a computer and a word processor.

[0002]

2. Description of the Related Art One example of a conventional ribbon cassette is shown in FIG.
(A). A ribbon feeding arm 2 and a ribbon taking-in arm 3 are provided so as to project from the right and left corners of a rectangular box-shaped ribbon accommodating portion 1, and a ribbon feeding mechanism 4 is provided inside the ribbon accommodating portion 1.

The endless ink ribbon 5 is exposed between the arms through the arms 2 and 3, and the rest is folded in a zigzag shape in the ribbon accommodating portion 1 and accommodated therein. It is sent out in a circulating manner by the mechanism 5 and used for printing by the print head at the exposed portion.

As the ink ribbon 5, a plastic film or fabric is used as a base ribbon, and one surface thereof is coated with solid ink. Since the film ribbon is endless, one film ribbon is cut into a predetermined length, and both ends thereof are butted and spliced.

As a conventional splicing method for the film ribbon 6, as shown in the plan view of FIG. 11B and the sectional view of FIG. 11C, the surface of the plastic film 7 on which the ink 8 is not applied is spliced. Bonded with tape 9.

[0006]

In the conventional film ribbon splicing method described above, a mask provided on the print head portion of the printer is contacted with the splicing portion during use, or the splicing portion is caught in the internal structure of the ribbon cassette. Splicing tape 9 as shown in FIG.
Alternatively, there is a problem that the film ribbon 6 may be turned over, sometimes cut, and peeled off.

Further, in the film ribbon, the ribbons are very likely to stick to each other.
As shown in (b), there is a problem in that ribbon double feeding occurs at the ribbon outlet 1a of the ribbon accommodating portion 1 and ribbon feeding becomes defective.

In view of the above problems of the prior art, the present invention turns the splicing tape at the splicing portion, turning it up,
An attempt is made to realize a film ribbon splicing method capable of preventing peeling and the like and a ribbon cassette capable of preventing double ribbon feeding.

[0009]

In the method of splicing a film ribbon of the present invention, a method of splicing a film ribbon 13 having a solid ink 12 coated on one surface of a plastic film 11 with a splicing tape 14 is used. In the above, the end portion of the splicing tape 14 is inclined with respect to the longitudinal direction of the film ribbon 13. In addition to that, the abutting portion 15 of the film ribbon 13 is inclined with respect to the longitudinal direction of the film ribbon 13.

Further, in a splicing method in which a film ribbon 13 having a solid ink 12 coated on one surface of a plastic film 11 is spliced using a splicing tape 14, the ends of the film ribbon 13 are overlapped with each other and 13 solid inks 1
Splicing tape 1 on the uncoated side of 2
It is characterized in that they are joined at No. 4.

Further, in the splicing method of splicing the film ribbon 13 coated with the solid ink 12 on one surface of the plastic film 11, the solid ink 12 at the spliced portion of one film ribbon 13 is removed,
It is characterized in that the other film ribbon 13 is superposed on the portion and bonded by using an adhesive 16.

Further, in the ribbon cassette of the present invention, a rectangular box-shaped ribbon accommodating portion 20 and the ribbon accommodating portion 2 are provided.
The ribbon feeding arm 21 and the ribbon taking-in arm 22 provided so as to project from the right and left corners of 0, and the ribbon feeding mechanism 23 provided in the ribbon accommodating portion 20. A ribbon cassette in which the left and right arms 21 and 22 are exposed between the arm tips and the rest is folded in a zigzag shape to be accommodated in the ribbon accommodating portion 20 and the ink ribbon 29 can be circulated by the ribbon feeding mechanism 23. In order to prevent double feeding of the ink ribbon 29, the ribbon containing portion 2
A pair of knife-shaped ribs 24 provided at the ribbon outlet of 0.
And a ribbon path correction guide 25 provided on a substantially extended line of the knife-shaped rib 24, and a partition plate 26 extending from the vicinity of the guide 25 along the knife-shaped rib 24 and having wavy unevenness on one surface. And a ribbon entry prevention wall 27 provided on the opposite side of the partition plate 26 with the ribbon path correction guide 25 interposed therebetween, and a position slightly separated from the ribbon entry prevention wall 27 and the partition plate 26. It is characterized in that it has a V-shaped convex strip 28.

By adopting this construction, it is possible to obtain a film ribbon splicing method capable of preventing the splicing tape from being turned over, cut and peeled off at the splicing portion, and a ribbon cassette capable of preventing double ribbon feeding. .

[0014]

In the method of splicing a film ribbon according to the present invention, as shown in FIG. 1, the ends of the splicing tape 14 are inclined with respect to the longitudinal direction of the film ribbon 13, for example, as shown in FIG. Shape, a diamond shape as shown in FIG. 2 (b), a continuous shape as shown in FIG. 2 (c), a truncated shape as shown in FIG. 2 (d), or the abutting portion 15 of the film ribbon 13 as shown in FIG. By making the ribbon 13 oblique with respect to the longitudinal direction, or by overlapping a part of the film ribbon 13 as shown in FIGS. 3 and 4, the catch in the mask or the ribbon cassette is reduced, and the ribbon is peeled off. Prevent these.

Further, in the ribbon cassette of the present invention, the double portion of the ribbon that is double-fed by the knife-shaped rib 24 is blocked, and the ribbon 29 is guided to the knife-shaped rib 24 by the ribbon path correction guide 25, and the wavy shape is formed. The partition plate 26 having unevenness, the ribbon entry prevention wall 27 provided at the corner and the convex ridge 28 having a V-shape give resistance to the ribbon 29 which is double-fed, and each part cooperates to double-feed the ribbon. Prevent.

[0016]

FIG. 1 is a diagram showing a first embodiment of the film ribbon splicing method of the present invention. In this embodiment, a film ribbon 13 in which a solid ink 12 is coated on one side of a plastic film 11 is used as a splicing tape 14.
In the case of splicing with, the end of the splicing tape 14 is inclined with respect to the longitudinal direction of the film ribbon 13.

For example, the splicing tape 14 may have a parallelogram shape as shown in FIG. 1 (a), a rhombus shape as shown in FIG. 1 (b), or a staggered shape as shown in FIG. 1 (c).
Alternatively, the end portion is formed in a curved shape. Although the splicing tape 14 shown in FIGS. 3A to 3D is inclined at both ends, it may be formed only at the ends in the traveling direction of the film ribbon 13.

In this embodiment having such a structure, since the splicing tape 14 does not have a portion perpendicular to the longitudinal direction of the film ribbon 13, the mask of the printing portion and the portion caught on the inside of the ribbon cassette are reduced. It is possible to smoothly pass through those catches. Therefore, turning over and peeling are prevented.

FIG. 2 is a view showing a second embodiment of the film ribbon splicing method of the present invention. In this embodiment, the splicing tape 1 is a film ribbon 13 having a solid ink 12 coated on one side of a plastic film 11.
In the case of splicing at 4, the abutting portion 15 of the film ribbon 13 is inclined with respect to the longitudinal direction of the film ribbon 13.

FIGS. 3 and 4 are views showing the third and fourth embodiments of the film ribbon splicing method of the present invention. In the third embodiment shown in FIG. 3, when the film ribbon 13 having the solid ink 12 coated on one side of the plastic film 11 is spliced with the splicing tape 14, a part of the film ribbon 13 is superposed. . In the fourth embodiment shown in FIG. 4, the solid ink 12 in the overlapping portion of the film ribbon 13 is removed without using a splicing tape, and the overlapping portion is adhesively fixed with an adhesive 16.

[0021] The second, third and fourth elements thus constructed.
In this embodiment, it is possible to prevent the surface of the film ribbon 13 to which the solid ink 12 is applied from being caught. However, the third and fourth embodiments of FIGS. 3 and 4 are the film ribbon 1
3 is effective only when 3 is conveyed in the arrow direction.

By applying the first embodiment to the second and third embodiments, it is possible to prevent the both sides of the film ribbon 13 from being caught and to improve the catching prevention effect.

FIG. 5 is a view showing an embodiment of the ribbon cassette of the present invention, (a) is a plan view showing a state in which a lid is removed,
(B) is sectional drawing in the bb line of (a) figure. The ribbon cassette according to the present embodiment has a rectangular box-shaped ribbon accommodating portion 2.
0, a ribbon feeding arm 21 and a ribbon take-in arm 22 that are provided so as to project from the right and left corners of the ribbon accommodating portion 20, and a ribbon feeding mechanism 23 that is provided inside the ribbon accommodating portion 20. This is the same as the conventional example described in 11, and the feature of the present embodiment is that a knife rib 24, a ribbon path correction guide 25, a partition plate 26, a ribbon entry prevention wall 27, and a C-shaped convex strip 28 are further provided. That is.

The knife-shaped rib 24 is provided at the ribbon outlet 20a of the ribbon accommodating portion 20, and two ribs having knife-shaped tips are arranged substantially parallel to each other with a space (about 3 mm or less). There is. The ribbon path correction guide 25 has a columnar shape, and is provided substantially on the extension line of the knife-shaped rib 24. Alternatively, the splicing tape may be slid outward from the extension so that it does not get caught on the knife. This ribbon path correction guide 2
A cylindrical roller may be added to 5.

The partition plate 26 has corrugations on one side, extends from the vicinity of the ribbon path correction guide 25 along the knife-shaped rib 24, and is connected to the wall of the ribbon accommodating portion 20. Has been. Also, the ribbon entry prevention wall 2
Reference numeral 7 is provided so as to project from a corner of the ribbon accommodating portion 20 opposite to the partition wall 26 with the ribbon path correction guide 25 interposed therebetween.

Further, the V-shaped convex strip 28 is a convex strip having a height low enough to give resistance to the ribbon passing over the convex strip, and is provided on the bottom plate of the ribbon accommodating portion 20. There is.

The operation of this embodiment thus constructed will be described with reference to FIGS. 6 to 10. FIG. 6 (a) shows a conventional ribbon cassette, and FIG. 6 (b) shows essential parts of an embodiment of the present invention. In the conventional ribbon cassette, as shown in FIG. 3A, the ink ribbons 29 may be delivered while being overlapped (double feed) at the ribbon outlet of the ribbon accommodating portion 20 as indicated by a circle A. In the present embodiment shown in FIG. 7B, the pair of knife-shaped ribs 24 can prevent the double feed by separating the double feed portion from the regular portion as shown by the circle B.

The knife-shaped rib 24 is an ink ribbon 29.
It is effective to prevent double feed of, but as shown in FIG.
There is a drawback that the splicing portion 30 is caught. Therefore, in the present embodiment, as shown in FIG. 7B, the ribbon path correction guide 25 is provided on the extension line of the knife-shaped rib 24.
Is provided, the direction in which the ink ribbon 29 enters the knife-shaped rib 24 is corrected to prevent the ink ribbon 29 from being caught. Although the ribbon path correction guide 24 has a cylindrical shape in the drawing, it is also preferable to provide a guide roller around this cylindrical shape as an axis.

Even if the above-mentioned ribbon path correction guide is provided, the ink ribbon 2 as shown by a circle C in FIG.
9 double feed may occur. Therefore, in this embodiment, by providing a partition plate 26 as shown in FIG. 8B, a double feed portion is isolated to prevent double feed. The corrugated irregularities provided on the surface of the partition plate 26 prevent the ink ribbon 29 from adhering.

Further, as shown in FIG. 9A, the ribbon accommodating portion 20
9B, the ink ribbon 29 accumulated in the lower left corner causes double feeding as indicated by a circle D. Therefore, as shown in FIG. 9B, the ribbon entrance preventing wall 27 is provided in the lower left corner of the ribbon containing portion 20.
Double feeding is prevented by preventing the excess ink ribbon 29 from entering.

Conventionally, as shown in FIG. 10A, a linear projection 31 is provided so as to widen the gap between the ink ribbons 29 folded in a zigzag shape near the ribbon outlet. For example, a large load is applied to get over the protrusion 31. In this embodiment, the projection 31 is formed into a V-shaped convex strip 28 as shown in FIG.
As a result, the load is reduced.

In the present embodiment, the knife ribs 24,
The total effect of the ribbon path correction guide 25, the partition plate 26, the ribbon entry prevention wall 27, and the V-shaped convex strip 28 ensures double feeding of the ink ribbon. It should be noted that stable running can be obtained with either a film ribbon or a fabric ribbon as the ink ribbon.

[0033]

According to the film ribbon splicing method of the present invention, it is possible to prevent the splicing portion of the film ribbon from being caught by the mask of the printer, the internal structure of the ribbon cassette, or the like and causing breakage or the like.
Further, the ribbon cassette of the present invention can prevent double feeding of the ink ribbon and can be used in a printer to contribute to the improvement of its reliability.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of a film ribbon splicing method of the present invention.

FIG. 2 is a drawing showing a second embodiment of the film ribbon splicing method of the present invention.

FIG. 3 is a drawing showing a third embodiment of the film ribbon splicing method of the present invention.

FIG. 4 is a drawing showing a fourth embodiment of the film ribbon splicing method of the present invention.

FIG. 5 is a view showing an embodiment of the ribbon cassette of the present invention,
(A) is a top view showing a state where a lid is removed, (b) is (a)
It is sectional drawing in the bb line of a figure.

FIG. 6 is a view for explaining the action of the embodiment of the ribbon cassette of the present invention.

FIG. 7 is a diagram for explaining the operation of the embodiment of the ribbon cassette of the present invention.

FIG. 8 is a view for explaining the action of the embodiment of the ribbon cassette of the present invention.

FIG. 9 is a view for explaining the operation of the embodiment of the ribbon cassette of the present invention.

FIG. 10 is a view for explaining the action of the embodiment of the ribbon cassette of the present invention.

FIG. 11 is a diagram showing a conventional ribbon cassette and film ribbon splicing method.

FIG. 12 is a diagram for explaining a problem to be solved by the invention.

[Explanation of symbols]

 11 ... Plastic film 12 ... Solid ink 13 ... Film ribbon 14 ... Splicing tape 15 ... Butting part 16 ... Adhesive 20 ... Ribbon accommodating part 21 ... Ribbon feeding arm 22 ... Ribbon taking-in arm 23 ... Ribbon feeding mechanism 24 ... Knife shape Rib 25 ... Ribbon path correction guide 26 ... Partition plate 27 ... Ribbon entry prevention wall 28 ... C-shaped convex strip 29 ... Ink ribbon 30 ... Splicing part

Claims (5)

[Claims] 1. A film ribbon (1) having a solid ink (12) coated on one surface of a plastic film (11).
A splicing method for splicing 3) using a splicing tape (14), characterized in that the end of the splicing tape (14) is inclined with respect to the longitudinal direction of the film ribbon (13). Method. 2. The method of splicing a film ribbon according to claim 1, wherein the abutting portion (15) of the film ribbon (13) is inclined with respect to the longitudinal direction of the film ribbon (13). 3. A film ribbon (1) having a solid ink (12) coated on one surface of a plastic film (11).
In the splicing method of splicing 3) using a splicing tape (14), the end portions of the film ribbon (13) are overlapped with each other and the solid ink (12) of the film ribbon (13) is not applied. A splicing method for a film ribbon, characterized in that one side is joined with a splicing tape (14). 4. A film ribbon (1) having a solid ink (12) coated on one surface of a plastic film (11).
In the splicing method of splicing 3), the solid ink (12) in the spliced part of one film ribbon (13) is removed and the other film ribbon (1)
A method for splicing a film ribbon, characterized in that 3) is superposed and bonded using an adhesive (16). 5. A rectangular box-shaped ribbon accommodating portion (20), a ribbon feeding arm (21) and a ribbon take-in arm (22) provided so as to project from the right and left corners of the ribbon accommodating portion (20). , A ribbon feeding mechanism (23) provided in the ribbon accommodating portion (20), and the endless ink ribbon (29) is connected to the left and right arms (21, 2).
2) It is exposed through the inside of the arm between the arm tips, and the rest is folded in a zigzag shape and accommodated in the ribbon accommodating portion (20), and the ink ribbon (29) is fed by the ribbon feeding mechanism (23).
In a ribbon cassette capable of circulating ink, a pair of knife-shaped ribs (24) provided at the ribbon outlet of the ribbon containing portion (20) and the knife-shaped ribs are provided for preventing double feeding of the ink ribbon (29). A ribbon path correcting guide (25) provided on a substantially extended line of the rib (24) and extending along the knife-shaped rib (24) from the vicinity of the guide (25) and having wavy unevenness on one surface. Partition plate (26)
And a ribbon entry prevention wall (27) provided on the opposite side of the partition plate (26) with the ribbon path correction guide (25) interposed therebetween, the ribbon entry prevention wall (27) and the partition plate (26). ), And a ribbon cassette provided at a position slightly distant from the above.