JPH0686136B2 - Loop-shaped ribbon manufacturing method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a loop ribbon suitable for a multicolor ink ribbon mainly used in printers.

Conventional technology As a multicolor ink ribbon for printers of typewriters, word processors, computers, etc., black and red inks or inks of black, cyan, magenta, yellow, etc. are applied in the longitudinal direction of a woven fabric on a white background. They are applied and impregnated parallel to each other.

In this case, in order to prevent adjacent ink impregnated bands from mixing at the boundary, silicone oil, paraffin,
It has been proposed to apply a water repellent such as wax or polytetrafluoroethylene to form a border line (boundary line) (see JP-A-58-140285). The border line is drawn by (a) a method of printing a water repellent agent by screen printing, or (b) a method of ejecting a water repellent agent from a nozzle while moving a ribbon.

Further, in JP-A-59-201887, heat is applied to a boundary equivalent part of a synthetic woven fabric from one of the front surface and the back surface to melt the corresponding part, and more specifically, a knife edge heat edge. An ink cross-border penetration prevention method is disclosed in which a boundary portion is heated to form a film by contacting or approaching a heating element having a contact portion with a corresponding portion of a synthetic fabric.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, it is not possible to draw an extra-fine border line on a flat long ribbon by the method (a) or (b) disclosed in Japanese Patent Laid-Open No. 58-140285. However, it was not easy to draw a border line on a loop-shaped ribbon obtained by cutting a seamless tubular body obtained by bag-weaving into a predetermined width, that is, a ribbon usually called a seamless ribbon. That is, the method (a) cannot be adopted because it cannot be applied to printing on a cylinder, and the method (b) cannot be adopted when the water repellent discharged from the nozzle first adheres to the ribbon. There is a problem that it is easy to be thick and it is difficult to exactly match the starting point of the line with the final point of the line after going around the loop.

In the border line forming method disclosed in Japanese Patent Laid-Open No. 59-201887, the condition that the corresponding part must be sufficiently melted to prevent ink penetration and the condition that the strength of the corresponding part must be maintained It is difficult to satisfy both requirements, and if even one point is insufficiently melted over the entire length of the ink ribbon, ink penetration will occur, while if there is even a slight excess of melting point, fusing (melt cutting) will occur at that point. become.

Under such a background, the present invention is capable of accurately and reliably forming a border line having a narrow line width, and can maintain the strength of the border line forming portion with industrial productivity. It is intended to provide a manufacturing method of.

Means for Solving the Problems In the method for producing a loop ribbon of the present invention, a yarn (H) having no high melting point or meltability is used as a warp yarn and a weft yarn to weave a seamless tubular body by means of a hollow weave. (A), at that time, a yarn (L) made of a low melting point heat-fusible fiber having a melting point lower than that of the yarn (H) by 10 ° C. or more is intermittently introduced as a weft, whereby a predetermined amount is introduced into the tubular body. A step (B) of providing an extremely narrow zone in which the threads (L) made of low melting point heat-fusible fiber are used as borderline wefts at intervals, and then bringing the entire tubular body under heating conditions to make borderline wefts in the zone Step (C) of melting and forming a film to form a border line, and before or after step (C) or at the same time as step (C), the cylinder obtained above is cut at regular intervals in the weft running direction. Characterized by comprising the step (D) It is intended.

The present invention will be described in detail below.

Step (A) In the present invention, a seamless tubular body is woven by bag-weaving. Double-weave is a type of double-weave, and is a method of weaving two overlapping plain weaves by arranging an odd number of warp yarns.
According to this method, one weft thread reciprocates two times to form an annular shape, and eventually the weft threads progress in a spiral shape to sequentially form a tubular shape, and a tubular shape in which the front and back sides are joined at both edges. A textile is obtained.

As the warp and weft in this step, polyamide, polyester, polyacrylonitrile, polyvinylidene chloride, polyvinyl chloride, polyethylene, polypropylene, polyurethane, polyvinyl alcohol, rayon, acetate, various synthetic fibers such as silk, semi-synthetic fiber,
Among the yarns made of recycled fibers and natural fibers, the one having a high melting point or the one having no melting property (H) is used.

Step (B) In the present invention, when the step (A) is carried out, the low melting point heat-meltable fiber thread (L) is intermittently introduced as a weft thread so that the tubular body is provided with a predetermined interval. An ultrafine width zone is provided in which the yarn (L) made of low melting point heat fusible fiber is used as a weft yarn for border lines.

As the low-melting point heat-meltable fiber yarn (L), in consideration of melting only the zone made of the low-melting point heat-melting fiber yarn (L) to form a film in a later step, Among various synthetic fiber yarns, it is necessary to use a yarn having a melting point lower by 10 ° C. or more than the above-mentioned yarn (H) having no high melting point or meltability.

As the thread (L) made of the low melting point heat-fusible fiber in this step (B), a colorless thread can be used, but it is particularly preferable to use a thread containing a fluorescent substance.

This is because if a white background has a colorless border line, it is difficult to see the line, making it difficult to perform inking (impregnate with ink) and other process operations. Is desired. However, after inking the ribbon, it is preferable that the border line is a white line because the color of the adjacent ink band can be immediately identified. Therefore, in order to meet the above-mentioned contradictory demands, if the border line is colored in a light color, it is not easy to check the line at the time of inking because the color is light. It is inferior and does not fully meet any demand.

However, if a yarn containing a fluorescent substance is used as the yarn (L) made of low melting point heat-fusible fiber and a border line is created from this, the border line will be clearly emerged by irradiation with light rich in ultraviolet rays during inking. Since it is possible to make the process operation easy, the border line becomes white line under the normal light after inking, which makes it extremely easy to distinguish the colors of the adjacent ink bands.

The fluorescent substance may be internally compounded in the stock solution during the production of the low melting point heat-fusible fiber, or may be adsorbed to the fiber or the yarn by means such as impregnation or spraying after the production of the fiber or after producing the yarn. Good.

Examples of the fluorescent substance include fluorescent dyes such as fluorescein, eosin, thioflavin, and rhodamine B, diaminostilbene disulfonic acid derivatives, imidazole derivatives, coumarin derivatives, triazole derivatives, carbazole derivatives, pyridine derivatives, naphthalic acid derivatives, and imidazolone derivatives. Fluorescent white dyes, Ca, Ba, Mg, Zn, oxides such as Cd, sulfides, silicates, phosphates, tantastenates and the like as the main component, a small amount of Mn, Ag, Cu, Sb,
An inorganic fluorescent pigment produced by adding Pb or the like as an activator and baking it, dissolving the above-described fluorescent dye or fluorescent white dye in water together with urea resin prepolymer, polymerizing and solidifying and pulverizing Are used.

Further, in this step (B), the low-melting-point heat-melting fiber is introduced into the tubular body at a predetermined interval by introducing the low-melting-point heat-melting fiber thread (L) as a weft as described above. By providing a very narrow band using the produced yarn (L) as a weft yarn for border lines, and by intermittently introducing a colored yarn composed of a yarn (H) having no high melting point or meltability as a weft, It is preferable to provide marks for indicating cutting points at regular intervals.

It is easy to intermittently introduce the colored yarns as wefts in the weaving process, and the introduction of the colored yarns makes it easy to see the cutting points, so in the subsequent cutting process, the cutting may be performed along these marks. , The cutting operation becomes extremely smooth.

Step (C) After weaving, after performing scouring and calendering according to a conventional method, the entire tubular body is brought into a heating condition, and an ultrafine width using the low melting point heat-meltable fiber thread (L) as a weft thread. The weft yarn in the zone is melted under heating conditions to form a film, which forms a border line. The heating conditions are such that only the portion of the low melting point yarn (L) made of heat-fusible fiber is melted and the other portions are not melted. At this time, in order to facilitate the formation of a film, it is preferable to melt the above zone while applying pressure. After melting, cool to room temperature to form a film.

Step (D) Before or after the step (C) or at the same time as the step (C), the cylindrical body obtained above is cut at regular intervals in the weft running direction. When the colored yarn is intermittently introduced as the weft as described in the step (B), the colored yarn may be used as a mark for cutting.

For the cutting operation, mechanically cut with a slitter,
It is performed by fusing with a hot blade, a high frequency welder, a laser processing machine or the like. Generally, the latter fusing is
This is advantageous because it is not necessary to take measures to prevent the fray of the thread from the cut end surface.

FIG. 1 is a perspective view of a cylindrical body obtained by carrying out step (A), step (B) and step (C) of the present invention.
Is a cylinder, (2) is a border line, and (3) is a mark made of colored yarn.

FIG. 2 is a perspective view of a loop-shaped ribbon obtained by cutting the cylindrical body of FIG. 1 from the mark portion according to the step (D), and the reference numerals have the same meanings as in the case of FIG. .

The number of border lines when using a loop ribbon is
1 for 3-color ribbon, 2 for 4-color ribbon, 4
In the case of a color ribbon, it is formed like three. It is preferable that the line width is as narrow as possible, and usually it is set to about 0.1 mm to 1.2 mm.

After forming the loop-shaped ribbon having the border line, the zone divided by the border line is applied, impregnated, or inked with the ink of a desired color.

Although the color of the ink is arbitrary, it is often two colors of black and red or four colors of cyan, magenta and yellow which are the three primary colors of black and paint. In the latter case, blue is obtained by overprinting cyan and magenta, green is overprinted by cyan and yellow, and red is overprinted by magenta and yellow. These seven colors and the white of the print paper are 8 in total. Depending on the color, letters,
Images, graphs, etc. are printed.

The loop ribbon obtained by the method of the present invention is useful as a multicolor ink ribbon used in printers such as typewriters, word processors and computers.

In the loop-shaped ribbon obtained by the method of the present invention, the inked ink permeates and mixes in the adjacent ink bands due to the border line formed by melting the yarn (L) made of the low melting point heat-fusible fiber. Fitting is prevented.

EXAMPLES Next, the present invention will be further described with reference to Examples.

Example 1 When weaving a tubular body by bag-weaving a high-melting point nylon fiber thread as a warp thread and a weft thread, a low-melting point nylon fiber thread having a melting point of 140 ° C. is intermittently introduced as a weft thread, Furthermore, as the weft, a high melting point nylon fiber thread intermittently colored red was introduced.

As a result, as shown in the perspective view of FIG. 1, a band having a width of 5 mm made of high melting point nylon fiber / a band having a width of 0.8 mm made of low melting point nylon fiber / a high melting point nylon fiber Band width of 5 mm made of thread / width of 0.8 mm made of low-melting nylon fiber / zone of width of 5 mm made of high-melting nylon fiber / width of 0.8 mm made of low-melting nylon fiber A tubular body was obtained in which the zone / zone of 5 mm width made of yarn made of high melting point nylon fiber / zone of width 0.1 mm made of yarn made of colored high melting point nylon fiber were repeated in this order.

Next, insert a plate for adhesion prevention into this cylinder, and then
A 0 ° C. heating element was pressure-bonded to the cylindrical body to melt a 0.8 mm wide zone made of low melting point nylon fiber thread, and then cooled to room temperature to form a film, which became a border line.

Subsequently, this tubular body was cut with a hot blade along a band having a width of 0.1 mm made of colored high-melting point nylon fiber, and the second
A loop ribbon having a circumference of 600 mm as shown in the perspective view was obtained.

Next, while running a loop-shaped ribbon provided with a border line, four zones of black, cyan, magenta, and yellow ink were applied and impregnated in the four zones separated by the border line, respectively. By this inking operation, the intended multicolor ink ribbon was obtained.

Example 2 A loop ribbon was produced under the same conditions as in Example 1 except that a yarn made of nylon fiber having a low melting point of 140 ° C. and having a melting point of 140 ° C. was blended with a fluorescent dye and spun.

This ribbon was subjected to inking in the same manner as in Example 1, but when the inking operation was performed under irradiation with black light, the border line clearly emerged and could be clearly confirmed.

Further, in the obtained multicolor ink ribbon, the border line was substantially a white line under fluorescent light, white light and sunlight, and the four color ink zones could be clearly identified by the border line.

Example 3 A low melting point polyester fiber yarn having a melting point of 150 ° C., which is a weft yarn impregnated with a fluorescent dye intermittently when weaving a tubular body by using a high melting point polyester yarn yarn as a warp yarn and a weft yarn. In addition, as a weft, a high-melting point polyester fiber yarn intermittently colored black was introduced.

As a result, a width of 6 m made of high melting point polyester fiber thread
m band / width of low melting point polyester fiber 0.9
mm band / width 6m made of high melting point polyester fiber thread
A tube was obtained in which m zones / zones of width 0.1 mm consisting of colored high melting point polyester fiber threads were repeated in this order.

Next, insert a plate for adhesion prevention into this cylinder and
A cylinder was pressure-bonded with a heating body at a temperature of ℃ to melt a zone of a width of 0.9 mm consisting of threads made of low-melting polyester fiber, and then cooled to room temperature to form a film, which became a border line.

Subsequently, this cylindrical body was cut by a laser beam machine along a band having a width of 0.1 mm made of colored high melting point polyester fiber to obtain a loop ribbon having a peripheral length of 1000 mm.

While running this ribbon, two types of ink, black and red, were inked in each of the two zones separated by the border line. When the inking operation was performed under arc lamp irradiation, the border line was It clearly emerged and was clearly visible.

In the obtained two-color ink ribbon, the border line was substantially a white line under fluorescent light, white light, and sunlight, and the two-color ink zones could be clearly identified by the border line.

EFFECTS OF THE INVENTION In the conventional method of drawing a border line using a water repellent, it is difficult to obtain a line having an extremely narrow width, smooth drawing cannot be performed due to a slight change in viscosity of the water repellent, and the ink is ejected from a nozzle. The line width tends to become thick when the water repellent first adheres to the ribbon, and it is difficult to accurately match the start point of the line with the final point of the line after going around the loop. On the other hand, in the present invention, it is possible to form the border line zone at once in the process of weaving the tubular body by the hollow weave,
The step of drawing a border line having an extremely narrow width using a water repellent as in the past can be omitted, and productivity and workability are significantly improved.

Further, in the present invention, the tubular body is made by using as the warp and weft yarns that do not have a high melting point or meltability,
Since the method of melting the low melting point weft thread that is intermittently introduced into the tubular body is adopted, it is possible to reliably melt only the low melting point weft thread portion. Moreover, since the low melting point weft is supported by the high melting point or the warp which does not show the melting property, the strength of the border line forming portion is maintained even when the low melting point weft is melted.

In the obtained loop-shaped ink ribbon, the presence of the border line formed by melting the thread made of the low melting point heat-fusible fiber prevents the inked ink from penetrating into the adjacent ink bands and mixing with each other. .

When a thread containing a fluorescent substance is used as the thread made of the low melting point heat-fusible fiber, the border line can be clearly emerged by the irradiation of light rich in ultraviolet rays during inking, which facilitates the process operation. On the other hand, after inking, the border line becomes substantially a white line under normal light, so that the colors of the adjacent ink bands can be extremely easily identified.

Furthermore, if the markings indicating the cutting points are provided at regular intervals by intermittently using colored yarns as the wefts, the cutting points can be seen at a glance, so it is sufficient to perform cutting along these markers in the subsequent cutting step. , The cutting operation becomes extremely smooth.
Further, the introduction of the colored yarn is easy in the weaving process.

[Brief description of drawings]

FIG. 1 is a perspective view of a cylindrical body obtained by carrying out step (A), step (B) and step (C) of the present invention. FIG. 2 is a perspective view of a loop ribbon obtained by cutting the cylindrical body of FIG. 1 from the mark point according to the step (D). (1) …… Cylinder, (2) …… Border line, (3)…
… A landmark

Claims (3)

[Claims] 1. A step (A) of weaving a seamless tubular body by means of a hollow weave using a thread (H) having no high melting point or meltability as a warp thread and a weft thread, in which case the thread (H) is used. Also, by introducing a low melting point fusible fiber (L) whose melting point is lower than 10 ° C as a weft in an intermittent manner, a low melting point fusible fiber thread (L) at a predetermined interval in a tubular body. (B), in which an extremely narrow band is formed as a weft for a border line, and then the entire weft is brought into a heating condition to melt the weft for a border line in the band to form a film, thereby forming a border line (C). ), Before or after the step (C), or at the same time as the step (C), the step (D) of cutting the tubular body obtained above in the weft running direction at regular intervals. Manufacturing method. 2. In the step (B), a thread (L) made of a low melting point heat fusible fiber is intermittently introduced as a weft so that the low melting point heat fusible fiber made of a low melting point heat fusible fiber is introduced into the tubular body at predetermined intervals. By providing a very narrow band using the yarn (L) as a weft for border lines, and by intermittently introducing a colored yarn composed of a yarn (H) that does not have a high melting point or meltability as a weft, a constant interval is obtained. The manufacturing method according to claim 1, characterized in that a mark indicating a cutting point is provided at. 3. A thread (L) made of low melting point heat fusible fiber,
The manufacturing method according to claim 1, wherein a thread containing a fluorescent substance is used.