JPH0425874B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cloth ribbon for multicolor printing used in typewriters, computer printers, and the like. More specifically, the present invention relates to a fabric ribbon for multicolor printing, in which a fabric ribbon is divided into a plurality of ink-impregnated areas by ink-free zones, and each of the ink-impregnated areas is impregnated with liquid ink of a different color, and a method for manufacturing the same.

[Prior Art] Conventionally, the non-ink impregnated zone (hereinafter referred to as the non-impregnated zone) of this type of cloth ribbon for multicolor printing has been produced by melting the non-impregnated zone on the cloth ribbon using an ultrasonic melter or the like. It is formed by impregnating the area with liquid resin and solidifying it.

[Problems to be Solved by the Invention] In such conventional techniques, for example, when a cloth ribbon is melted, the strength of the melted portion is significantly reduced and it is easily torn.
The original advantage of cloth ribbons is that they can be used many times, but there is a problem in that their durability is significantly inferior to cloth ribbons for monochrome printing that do not have a non-impregnated zone.

In addition, with products impregnated with liquid resin, pinholes are likely to occur because the resin does not penetrate sufficiently into the fibers. As the density decreases, pinholes are more likely to occur.

Furthermore, with such conventional techniques, it was extremely difficult to ensure the linearity of the non-impregnated zone.
When a conventional multicolor printing cloth ribbon is stored in a cassette and folded in a meandering pattern or wound onto a spool, different colors of ink overlap near the non-impregnated zone, resulting in color mixing. be.

[Means for Solving the Problems] In order to solve such problems, the fabric ribbon for multicolor printing of the present invention is provided such that the non-impregnated band has a longitudinal thread in the non-impregnated band in the width direction. The structure is formed by melting and solidifying the yarn.

Further, the manufacturing method of the present invention for producing the cloth ribbon for multicolor printing is characterized in that the cloth ribbon is a thermofusible yarn having a melting point considerably lower than that of the yarn in the width direction as the yarn in the longitudinal direction in the non-impregnated zone. After weaving, the fabric ribbon is heated at a temperature above the melting point and lower than the heat resistance temperature of the yarn in the width direction to melt the yarn in the longitudinal direction in the non-impregnated zone. , a method was adopted in which the threads in the width direction were impregnated and then solidified.

[Function] In the fabric ribbon for multicolor printing of the present invention, the unmelted widthwise thread and the longitudinal thread that is to be impregnated and melted are woven in advance as a cloth, so that they do not interact with each other. Due to their interlocking presence, the fused longitudinal threads penetrate between the widthwise threads that do not readily melt. Adjacent ink-impregnated regions separated by non-impregnated zones are interconnected by non-melting transverse threads.

When such a fabric ribbon for multicolor printing is made using the manufacturing method of the present invention, only the threads in the longitudinal direction are melted when forming the non-impregnated zone, and the threads in the width direction are not thermally damaged.

In addition, since the straightness of the thread from weaving is inherited as is, the straightness of the non-impregnated belt is extremely excellent.

[Effects of the Invention] In the fabric ribbon for multicolor printing of the present invention, pinholes do not occur in the non-impregnated zone, color mixing can be reliably prevented, and the non-impregnated zone has a considerable amount of yarn in the width direction. Since the ink-impregnated zones separated by the non-impregnated zone are connected to each other, the strength does not decrease significantly and has almost the same strength as a cloth ribbon without the non-impregnated zone. can.

Moreover, as a result of using the above manufacturing method, the non-impregnated band has extremely excellent linearity, and there is no mixing of colors due to meandering as in the conventional method, and the threads in the width direction do not melt even when the entire cloth ribbon is heated. Therefore, a desired thin non-impregnated zone can be created without using a needle-like melting device or impregnating device.

[Example] Next, embodiments of the present invention will be described.

The cloth material of the cloth ribbon used in the present invention is 20 to 50
It is obtained by plain weaving denier thread and cutting it to a specified width.

As shown in FIG. 1, the cloth ribbon 1 is provided with an elongated non-impregnated band 2 in the longitudinal direction of the ribbon 1.
one that partitions the ink-impregnated area 3 in the width direction;
As shown in the figure, there is a non-impregnated band 2 in the width direction of the cloth ribbon 1.
It is known that the ink-impregnated area 3 is partitioned in the longitudinal direction by providing a large number of ink-impregnated areas 3, but in both cases, each ink-impregnated area 3 is filled with liquid ink of a different color, such as red, black, or yellow. The three colors of , cyan, and magenta are applied and impregnated in a certain order.

The method for producing the above-mentioned cloth ribbon for multicolor printing will be explained in detail with reference to FIGS. 3 and 4.

The cloth ribbon 1 is used by appropriately cutting a cloth that has been woven in advance. The cloth ribbon 1 is woven using, for example, nylon 66 yarn for the widthwise threads of the ink-impregnated region 3 and non-impregnated zone 2, and only the longitudinal threads of the non-impregnated zone 2 are woven from, for example, nylon 66 thread. It is also woven using polycapramide yarn, which has a considerably low melting temperature (melting temperature is approximately 120°C). The cloth ribbon 1 shown in FIG. 3 is woven in this manner, in which 21 is a thread in the longitudinal direction of the non-impregnated band 2, 22 is a thread in the width direction of the non-impregnated band 2, and 31
is a thread around the non-impregnated zone 2 in the ink-impregnated area 3.

After weaving the cloth ribbon 1, it is heated at a temperature of about 150° C. before, after or during cutting, and pressed as necessary to melt the longitudinal threads 21 woven with the polycapramide threads to obtain a width. It is impregnated between the yarns 22 in the direction and the yarns 31 around them.

In that case, as shown in FIG. 4, the thermally fused longitudinal threads 21 are impregnated in a narrow peripheral area, completely eliminating the voids between the unmelted threads 22 and 31, and creating a non-impregnated state. This makes it possible to completely prevent ink from moving across boundaries.

In the above embodiment, the longitudinal thread 21 includes:
In addition to the polycapramide yarn, polyvinylidene chloride yarn, vinylidene yarn, vinylidene-vinyl chloride copolymer yarn, polyvinyl chloride yarn, spandex yarn, polypropylene yarn, vinyl chloride-vinyl acetate copolymer yarn, etc. have a melting temperature of 210°C. The following may be used appropriately: Moreover, the thickness of these threads to be melted may be as thick as a thread.

Also, the thread 22 that does not melt and constitutes the cloth ribbon,
The thread 31 is not limited to the nylon 66 thread, but may also be a polyester thread. It is preferable that these threads have a softening point higher than the melting temperature of the thread to be melted so that they are not affected by heating.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a multicolor printing fabric ribbon provided with a non-impregnated band in the longitudinal direction, FIG. 2 is a perspective view of a multicolor printing fabric ribbon provided with a non-impregnated band in the width direction, FIG. FIG. 4 is an explanatory diagram of the manufacturing method of the present invention. (Main symbols in the drawing), 1: cloth ribbon, 2: non-impregnated zone, 3: ink-impregnated zone.

Claims (1)

[Scope of Claims] 1. A cloth ribbon divided into a plurality of ink-impregnated regions by an ink-free zone, each of which is impregnated with a liquid ink of a different color, comprising:
A fabric ribbon for multicolor printing, wherein the ink-free zone is formed by melting and solidifying longitudinal threads in the ink-free zone between widthwise threads. 2. A method for producing a fabric ribbon for multicolor printing, in which a fabric ribbon is divided into a plurality of ink-impregnated areas by an ink-non-impregnated zone, the fabric ribbon having a width as a longitudinal thread in the ink-non-impregnated zone. The fabric ribbon is woven using heat-fusible yarn that has a melting point considerably lower than that of the yarn in the width direction, and after weaving, the cloth ribbon is heated at a temperature above the melting point and lower than the heat resistance temperature of the yarn in the width direction. A method for manufacturing a cloth ribbon for multicolor printing, characterized in that the longitudinal threads in the non-ink-impregnated zone are melted, the widthwise threads are impregnated with the ink, and then solidified.