JPH061053A - Ink ribbon and ink ribbon cassette - Google Patents

Abstract

PURPOSE:To provide an ink ribbon ensured not only in the sufficient impregnation of ink but also in flexibility, preventing the damage of the ink ribbon, the abrasion of a head pin and the color mixture in the case of multicolor printing and extremely good in durability and to also provide an ink ribbon cassette using said ink ribbon. CONSTITUTION:An ink ribbon consists of a fabric ribbon r1 impregnated with ink or having to be impregnated with ink and the protective ribbon r2 arranged to the inside of the ribbon r1 in a non-fixed state and an ink ribbon cassette receives said ink ribbon. The peripheral length of the protective ribbon r2 may be same to that of the fabric ribbon r1 or may be made extremely shorter or longer than that of the fabric ribbon r1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink ribbon for impact printing and an ink ribbon cassette equipped with the ink ribbon.

[0002]

2. Description of the Related Art A woven cloth impregnated with ink is widely used as a single-color or multi-color ink ribbon used in printers of devices such as computers and word processors.

Printing is performed by hitting the paper on the platen with a head pin from the back side of the ink ribbon. In this case, the ink ribbon may be damaged as the number of prints increases, and the head pin may also be worn by the pigment or the like carried on the ink ribbon. In the case of multicolor ink ribbons, for example, when black-color printing is performed and then light-color printing is performed, color mixing may occur due to the ink of the previous printing attached to the head pins in a small amount. Therefore, in order to solve such a problem, it has been attempted to provide a coating layer or a film layer on one surface of the ink ribbon.

For example, Japanese Unexamined Patent Publication No. 59-164177 discloses an ink ribbon in which one surface of a base cloth is coated with a film-forming elastic resin such as polyurethane resin, polyester elastomer, nylon elastomer.

Japanese Utility Model Laid-Open No. 58-160166 and Japanese Utility Model Laid-Open No. 58-160167 disclose typewriter ribbons in which a coating layer of a polyurethane rubber elastic body is formed on the surface of a base fabric.

Japanese Utility Model Laid-Open No. 60-60255 discloses an ink ribbon in which a synthetic resin cloth is backed with a fluororesin sheet.

Japanese Utility Model Laid-Open No. 61-37965 discloses an ink ribbon in which one side of the ribbon is covered with a non-permeable film.

Japanese Utility Model Laid-Open No. 62-157251 discloses an ink ribbon having a two-layer structure of a cloth ribbon and a plastic film.

Japanese Utility Model Laid-Open No. 63-60651 discloses an ink ribbon in which a thin film made of a metal or an insulator is formed on at least one side of a base cloth.

Japanese Utility Model Laid-Open No. 63-112049 discloses an ink ribbon for a wire dot impact printer having a plastic film backing.

When laminating a film on a base cloth, it has been proposed to adhere the both to each other only at both edges.

That is, Japanese Utility Model Laid-Open No. 51-145207 discloses a printing ribbon in which a plastic film is laminated on one side of an ink-impregnated ribbon and both sides are bonded at both ends.

In Japanese Patent Laid-Open No. 64-31670, a ribbon made of a polymer film is laminated on one side of a ribbon made of a woven fabric,
In addition, an ink ribbon having a structure in which both edges are welded is shown.

Japanese Patent Application Laid-Open No. 64-31 related to the applicant's application
Japanese Patent No. 670 discloses an ink ribbon having a structure in which a polymer film is laminated on one surface of a woven fabric ribbon, and the woven fabric ribbon and the polymer film ribbon are welded at both ends.

Similarly, the Japanese Patent Application Laid-Open No. 4-
In Japanese Patent No. 73181, a woven cloth-containing thin film ribbon, in which a thin woven cloth is provided with a polymer coating layer, is laminated on one side of a woven cloth ribbon, and both are integrated at least at an edge portion or a border line portion. An ink ribbon having a modified configuration is shown.

[0016]

If a protective layer such as a coating layer or a film is provided on the entire surface of one side of the ink ribbon as described above, damage to the ink ribbon, head pin wear prevention, and color mixture prevention in multicolor printing are prevented. Each effect can be expected, but the presence of the protective layer installed reduces the amount of ink impregnated into the base fabric and tends to impair the flexibility of the ink ribbon itself, and as a result, this method has become very popular. The current situation is that there are none.

When the protective film is laminated on the base cloth, the method of adhering the both to each other only at the both edges can prevent a decrease in the amount of ink impregnated into the base cloth, and can also secure the flexibility of the ink ribbon itself. However, when actually trying this method, while the number of prints was small, the expected effect was obtained, but as the number of prints increased, the protective film was wrinkled or distorted or peeled from the base cloth, and therefore the protection was obtained. The film may be caught at the gear that drives the ribbon to run, and the ribbon may not run smoothly, which may cause troubles such as printing at the same location on the ink ribbon. Therefore, there is a problem in terms of durability such that the number of prints is reduced, but the number of prints is reduced, and this method does not sufficiently achieve the intended purpose.

Under such a background, the present invention ensures a sufficient ink impregnation amount, the flexibility of the ink impregnated ribbon, the damage prevention of the ink ribbon, the wear prevention of the head pin, and It is an object of the present invention to provide an ink ribbon which can prevent color mixing in the case of color printing and also has extremely excellent durability, and an ink ribbon cassette using such an ink ribbon.

[0019]

The ink ribbon of the present invention comprises a woven fabric ribbon (r1) impregnated with or impregnated with ink, and the woven fabric ribbon (r1) inside thereof.
Is a protective ribbon (r2) arranged in a non-fixed state.

In the ink ribbon cassette according to the present invention, the woven cloth ribbon (r1) impregnated with the ink or impregnated with the ink and the woven cloth ribbon (1) are arranged inside the ribbon in a non-fixed state. It is equipped with a protective ribbon (r2).

The present invention will be described in detail below.

The raw fabric for the woven ribbon (r1) can be obtained by weaving using multifilament yarns of polyamide or polyester as warp and weft. Generally, for example, 40d / 34f, 30d / 26f, 30
A multifilament yarn such as d / 12f is used, but it is not limited to these. Also,
Threads made of ultrafine fibers or ultrafine fibers can also be used.

The woven ribbon (r1) is an endless ribbon,
That is, it is possible to use a tape in which both ends of the tape are connected to form a loop. However, a seamless ribbon, that is, a seamless ribbon obtained by slitting a tubular woven fabric obtained by bag-weaving in the width direction is particularly preferable. This seamless ribbon has no seams, so there is no pin catching, sharpness of printing, durability of the ink ribbon, and compact ribbon cassette. However, in the case of seamless, the diameter of the loop circumference can be reduced.) This is because it is significantly superior to the endless ribbon.

The woven ribbon (r1) may be a single color ribbon or a multicolor ribbon. In the case of multiple colors, border lines are provided in advance in the longitudinal direction, and the areas sandwiched by the border lines are impregnated with the respective color inks.

As the protective ribbon (r2), a polymer film or a thin woven cloth provided with a protective material coating or impregnated layer is preferably used, and the latter is more practical.

Examples of the polymer film include polyurethane resin, polyester resin, polyamide resin, polyvinylidene chloride resin, polyvinyl chloride resin, polyolefin resin, polystyrene resin, cellulose polymer and the like. Of these, elastic resin films such as polyurethane-based elastomers, polyester-based elastomers, polyamide-based elastomers, polyolefin-based elastomers, etc., particularly polyurethane-based elastomer films are important.

As the thin woven fabric in the above, a woven fabric woven with threads made of various fibers such as polyamide fiber and polyester fiber is used, and particularly, it is made of polyamide fiber excellent in self-restoring force. Woven fabric is important. Since it is required to be thin, it is preferable to use warps and wefts of 20 d or less, more preferably 15 d or less.

The term "coating or impregnation layer with a protective material" means a thin woven cloth provided with a layer of a protective material by means of coating, impregnation, laminating or the like. Examples of the protective material include polyamide-based, polyester-based, polyurethane-based, polyvinylidene chloride-based, polyvinyl chloride-based, fluororesin-based, organosilicon resin-based, polyolefin-based, polystyrene-based, and cellulose-based polymers. Molecules, paraffin, wax, low molecular weight polyolefin, silicone, molybdenum disulfide, etc. are used. Depending on the case, weaving may be performed using a thread to which the resin liquid is attached, and after the weaving, the attached resin may be polymerized to form a coating layer.

The circumference of the protective ribbon (r2) is equal to the woven ribbon (r2
It may be the same as the circumference of 1), shorter than this, or longer than this. There is a limit to the space where the ribbon can be stored in the cassette, so when focusing on durability, make the circumference of the protective ribbon (r2) as long as possible,
The peripheral lengths of the woven ribbon (r1) and the protective ribbon (r2) are set according to the purpose such that the peripheral length of the protective ribbon (r2) is made as short as possible when importance is placed on compactness.

In the ink ribbon cassette, the protective ribbon (r1) is arranged inside the woven fabric ribbon (r1) in a non-fixed state with the woven fabric ribbon (r1). In this case, either (a) a method of running the protective ribbon (r2) through the drive wheel (2) described below, or (b) a method of running the protective ribbon (r2) without passing through the drive wheel (2) described below. Momo is adopted.

In the case of the above (b), in order to allow the protective ribbon (r1) to travel as the woven ribbon (r1) is driven, a proper friction is applied when the protective ribbon (r1) contacts the woven ribbon (r1). It is desirable to select the kind of the polymer film and the kind of the protective material so as to have the strength or adhesive force.

The ink ribbon and cassette of the present invention are
It is useful as an ink ribbon and a cassette used in printers such as computers and word processors.

[0033]

In the ink ribbon of the present invention, since the protective ribbon (r2) is located inside the woven fabric ribbon (r1), the protrusion of the head pin during printing is mediated by the protective ribbon (r2). Done, preventing the headpins from making direct contact with the ink layer. Therefore, it is possible to sufficiently deal with printing with sharp pins having a large number of pins, and it is possible to prevent wear of the head pins and prevent color mixing in the case of multicolor printing.

In addition, a woven ribbon (r1) and a protective ribbon (r2)
Since the protective ribbon (r2) does not adversely affect the amount of ink impregnated into the woven ribbon (r1), it also inhibits the flexibility of the woven ribbon (r1). Nor.

The fact that the woven ribbon (r1) and the protective ribbon (r2) are in a separated state means that the impact of the head pin causes the protective ribbon (r1) to hit.
It means that the ink ribbon is absorbed by 2) and its influence is not transmitted to the woven fabric ribbon (r1), and the durability of the ink ribbon is extremely good.

[0036]

EXAMPLES The present invention will be further described with reference to examples.

Example 1 FIG. 1 is an explanatory view schematically showing an example of an ink ribbon and an ink ribbon cassette of the present invention.

(1) is a case, (2) is a drive wheel, (3) is a driven wheel that also serves as a rotating body for ink transfer, (4) is a square ink tank made of felt, and (5) is a bearing or spring. It is a narrow overflowing body. (R) is an ink ribbon, which comprises a woven ribbon (r1) and a protective ribbon (r2). The driven wheel
An ink transfer rotary member may be provided separately from (3), or a circular ink tank (4) may be used.

A 40d nylon multifilament yarn was used as the warp and weft to obtain a seamless woven fabric by the bag-weaving method, which was then scoured and calendered by a conventional method and then melt-cut in the radial direction to obtain a woven ribbon ( got r1).

On the other hand, 5d or 1 as warp and weft
A seamless woven fabric was obtained by the bag-weaving method using 0d nylon multifilament yarn. This thin seamless woven fabric was coated or impregnated with a polyurethane resin solution, cured, and then melt-cut in the radial direction to produce a protective ribbon (r2).

The above-mentioned woven ribbon (r1) and protective ribbon
The circumference of (r2) is set so that the latter is considerably shorter than the former.

Both of them were mounted in a cassette as shown in FIG. 1 so that the traveling paths of the woven cloth ribbon (r1) and the protective ribbon (r2) were completely separated. The protective ribbon (r2) is a woven ribbon (r1)
Due to contact friction with the woven fabric ribbon, the woven fabric ribbon (r1) travels in synchronism with it.

When this ink ribbon cassette was attached to a printer and printing was performed, at least 2 million characters could be printed, and the sharpness of the printing was also favorable.

Embodiment 2 FIG. 2 is an explanatory view schematically showing another example of the ink ribbon and the ink ribbon cassette of the present invention.

A 40d nylon multifilament yarn was used as the warp and weft to obtain a seamless woven fabric by the bag-weaving method, which was then scoured and calendered by the conventional method and then melt-cut in the radial direction to form a woven ribbon ( got r1).

On the other hand, 5d or 1 as warp and weft
A seamless woven fabric was obtained by the bag-weaving method using 0d nylon multifilament yarn. After coating the thin seamless woven fabric with paraffin wax in a molten state, the heating body was brought into contact with the paraffin wax to impregnate the interior thereof. The protective ribbon (r2) was produced by fusing this in the radial direction.

As in Example 1, the circumference of the protective ribbon (r2) was set to be considerably shorter than the circumference of the woven ribbon (r1).

Both of them were mounted in a cassette as shown in FIG. 2 so that the traveling paths of the woven cloth ribbon (r1) and the protective ribbon (r2) were completely different. The protective ribbon (r2) is a woven ribbon (r1)
Due to contact friction with the woven fabric ribbon, the woven fabric ribbon (r1) travels in synchronism with it.

When this ink ribbon cassette was attached to a printer and printing was performed, at least 2 million characters could be printed, and the sharpness of the printing was also favorable.

Embodiment 3 FIG. 3 is an explanatory view schematically showing still another example of the ink ribbon and the ink ribbon cassette of the present invention.

A 40d nylon multifilament yarn was used as the warp and weft to obtain a seamless woven fabric by the bag-weaving method, which was then scoured and calendered by the conventional method and then melt-cut in the radial direction to obtain a woven ribbon ( got r1). A border line was attached to the woven ribbon (r1), and then inks of different colors were inked in the zones divided by the border line.

On the other hand, 5d or 1 as warp and weft
A seamless woven fabric was obtained by the bag-weaving method using 0d nylon multifilament yarn. This thin seamless woven fabric was impregnated with a dispersion of polytetrafluoroethylene and then dried. Then, the protective ribbon (r2) was produced by fusing this in the radial direction.

The above-mentioned woven ribbon (r1) and protective ribbon
The circumferences of (r2) were set to 900 mm and 1500 mm, respectively.

Both of them were mounted in a cassette as shown in FIG. 3, and the protective ribbon (r2) was also made to run by the drive wheel (2) and the driven wheel (3).

This ink ribbon cassette was attached to a printer and printing was carried out.
The abrasion resistance of the head pin was extremely good, and smooth printing was possible until the life of the ink ribbon.

Embodiment 4 FIG. 4 is an explanatory view schematically showing another example of the ink ribbon and the ink ribbon cassette of the present invention.

Example 3 was repeated except that the peripheral lengths of the woven ribbon (r1) and the protective ribbon (r2) were set to 1500 mm and 900 mm, respectively.

The sharpness of printing, the prevention of color mixture, and the prevention of abrasion of the head pin were extremely good, and smooth printing was possible until the life of the ink ribbon.

[0059]

EFFECTS OF THE INVENTION The ink ribbon of the present invention is (a) that the amount of ink impregnated into the woven cloth ribbon is not reduced and the flexibility of the woven cloth ribbon itself is not impaired; It has excellent effects such as prevention of damage to the ribbon, prevention of abrasion of head pins, prevention of color mixture in the case of multicolor printing, and (c) extremely excellent ribbon durability.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing an example of an ink ribbon and an ink ribbon cassette of the present invention.

FIG. 2 is an explanatory view schematically showing another example of the ink ribbon and the ink ribbon cassette of the present invention.

FIG. 3 is an explanatory view schematically showing still another example of the ink ribbon and the ink ribbon cassette of the present invention.

FIG. 4 is an explanatory view schematically showing another example of the ink ribbon and the ink ribbon cassette of the present invention.

[Explanation of symbols]

 (1) ... case, (2) ... drive wheel, (3) ... driven wheel, (4) ... ink tank, (5) ... narrow overflow body, (R) ... ink ribbon, (r1) ... woven ribbon , (R2)… Protective ribbon

Claims (2)

[Claims] 1. A woven fabric ribbon (r1) impregnated with or impregnated with ink, and a protective ribbon (r2) arranged inside the woven fabric ribbon (r1) in a non-fixed state. Ink ribbon made of. 2. A woven fabric ribbon (r1) impregnated with or impregnated with ink, and a protective ribbon (r2) inside which the woven fabric ribbon (1) is arranged in a non-fixed state. Ink ribbon cassette that is equipped with.