JPS61169270A - Two-color printing ribbon - Google Patents

Abstract

PURPOSE:To enable the useful life of a two-color printing ribbon to be doubled, by a construction wherein both side printing section bands of a two-color printing ribbon comprising three printing section bands with a width ratio of about 1:2:1 are colored in the first color, while the central printing section band is colored in the second color, and the ends of the ribbon are jointed to each other so that the ribbon is set into the form of a Mobius ring. CONSTITUTION:Of the two-color printing ribbon 6 having a width of l, both side printing section bands 6a, 6c are colored in the first color, e.g., black, while the central printing section band 6b is colored in the second color, e.g., red, in a width ratio of 1:2:1, and both end parts 6d, 6e of the ribbon 6 are jointed to each other while twisting them 180 deg. relative to each other, whereby the ribbon 6 is set into the form of a Mobius ring. In using the ribbon by enclosing it in a ribbon casing, the printing section band 6a and a half of the printing section band 6b adjacent to the band 6a are used in the first run of the ribbon 6, while appropriately switching from the band 6a to the band 6b as required. After the first run, the ribbon 6 is reversed upside down and face side back, and the residual half of the band 6b and the band 6c are used in the second run of the ribbon 6.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to two-color printing ribbons for printers, typewriters, etc. (hereinafter referred to as printers, etc.) that print characters, symbols, figures, etc. by the impact method, especially cassettes. Regarding storage type items.

[Conventional technology]

Conventionally, when this type of printing ribbon is installed in a printer, etc., it is desired that it can be easily replaced without soiling the operator's hands or the printing paper, so it is stored in a special case, and when used, it is stored in a special case. Many of them are made into sumo wrestlers so that they can be incorporated into the body of a sumo wrestler.

The structure of this conventional birch printing ribbon cassette is shown in FIG. In the figure, (1) is a printing ribbon cassette 1 (2) is a ribbon case, and (3) is a printing ribbon, which is an endless loop with its tip and end connected. (4) is the printed part of the above printing ribbon (3) in the ribbon case (2).
) and a drive roller for pulling out a new portion of the printing ribbon (3) from the ribbon teeth (2);
(5) is the above drive roller (4) and printing ribbon (3)
This is a pressure roller for applying sufficient FmTh force to the

By the way, in order to extend the service life of the printing ribbon (3), it can be easily assumed that it would be better to increase the length of the ribbon, but since the capacity of the ribbon case (2) is determined, the printing ribbon will naturally There is a limit to the length of (3). Therefore, in the conventional monochrome type printing ribbon (3), as shown in FIG.
The ribbon is twisted by 0° and connected to form a Möbius ring, and by printing half of the ribbon, the apparent length of the ribbon is doubled, thereby extending the ribbon life.

ff1J: By using a Möbius ring, the front and back sides of the printing ribbon (3) are reversed each time the printing ribbon (3) rotates once, so the same printing part will be rotated once during the two rotations of the printing ribbon (3). It's all you can do.

On the other hand, in the case of a conventional two-color printing ribbon (3) capable of printing two colors, black and red, as shown in FIG. (3b
), one printing strip (3a) was impregnated with black ink, and the other printing strip (3b) was impregnated with red ink.

[Problem that the invention seeks to solve]

Conventional two-color printing ribbons are structured as described above, so it is impossible to convert them into Möbius rings, and therefore the printing ribbon cassettes have to be replaced frequently because they deteriorate more quickly than monochrome printing ribbons. There were some unavoidable problems.

This invention was made to solve the above-mentioned problems, and it is an object of the present invention to provide a two-color printing ribbon with a long printing life.

[Means for solving problems]

In the two-color printing ribbon according to the present invention, three printing sections 'if'f with a width of 1:2:1 are arranged in parallel in this order, the printing section bands on both sides are the first color, and the printing sections on both sides are of the first color, and The printing zone is the second color, and both lengthwise ends are set at 180° relative to each other.
They are twisted and connected to each other to form a Möbius ring.

[Effect]

The two-color printing ribbon according to the present invention selectively uses one half of its entire width to perform printing, but since it is formed into a Möbius ring, each half of the printing ribbon is turned upside down, front and back, and reversed each time the ribbon goes around. Hail, so each half can be printed once in two cycles of the printing ribbon.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

In the figure, (6) is a two-color printing ribbon according to the present invention, and (f) is its width. (6a).

(6b) and (6a) are printing dividing bands, respectively, and the width of these printing partitioning bands is 1:2 kan1, and they are arranged in parallel in this order in the width direction. That is, while the width of the printing partition bands (6a) and (60) on both sides is 1, the width of the central printing partition band (6b) is approximately 2. Printed partition strips (6a) on both sides.

(6c) is a base material such as a nonwoven fabric impregnated with ink of a first color (for example, black), and the central print zone (6b)
The base material is impregnated with ink of a second color (for example, red), and both printing strips can be printed on both sides. These three printing sections (6a) + (6b), (6c
), both ends (6d) and (6e) are connected by twisting 180 degrees to each other to form an entre and sloop in the form of a Möbius ring.

This two-color printing ribbon (6) is attached to the ribbon case (2) (second
When the two-color printing ribbon (6) is stored in the second circumference (Fig.
Printing is performed by using half of the printing section a) and the printing section (6b) adjacent thereto, and switching between them as necessary.

When the -th cycle is completed, the printing ribbon (6) is turned upside down and front and back. The second layer thus uses the other half of the printed swath (6b) and the printed swath (6C).

As is clear from the above, the two-color printing ribbon according to the present invention performs printing once in its two rotation cycles, and has twice the printing life of the conventional two-color printing ribbon.

In the above embodiment, each printing strip can be printed on both sides, but when considering an arbitrary point on the printing ribbon, that point is always printed on the same side, so On one side, only half of one side in the width direction may be printable, and on the opposite side, only the half opposite to the above-mentioned half side may be printable. Furthermore, the above embodiments do not extend to the possibility of reversing the arrangement of black and red or of using other color combinations. Further, the material of the printing ribbon is limited to one impregnated with ink, and any suitable material such as plastic tape coated with ink may be used.

〔Effect of the invention〕

As described above, according to the present invention, three print strips having a width ratio of 1:2:1 are arranged in parallel in the length direction in this order, and the print strips on both sides are arranged in parallel in the length direction. Since the ribbon is connected to the second color in the form of a Möbius ring, the printing life is twice as long as that of conventional two-color printing ribbons.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the principle of an embodiment of the present invention;
The figure is a partially cutaway perspective view of a printing ribbon cassette, and Figure 3 is a perspective view showing the principle of a conventional monochrome type printing ribbon.
FIG. 4 is a perspective view showing the principle of a conventional two-color printing ribbon. In the figure, (6) is a two-color printing ribbon, (6a). (6b) and (6c) are the printing division bands, (6d) and
(6e) is the edge f'AI. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Patent Attorney Masu Oiwa Figure 1 Pen Figure 2 Figure 3

Claims (1)

[Claims] (1) Approximately 1:2:1 in two-color printing ribbon for devices that print characters, symbols, figures, etc. using the impact method.
Three printing strips with a width of A two-color printing ribbon characterized in that both longitudinal ends of the printing strip are connected to each other by twisting them by 180 degrees.