JPS6280083A - Ink ribbon for impact-type printer - Google Patents

Abstract

PURPOSE:To obtain a two-color ink ribbon with a prolonged useful life, by providing an ink ribbon in the form of a Mobius band, which is trisected along the rotational moving direction thereof, has a central area provided with a color less frequently used, and has both side areas provided with a color more frequently used. CONSTITUTION:A printing system comprises a red-and-black ink ribbon 1 in the form of a Mobius band, a printing head 2 and a printing paper 3. The ink ribbon is trisected along the rotational moving direction thereof, has a central area provided with a color less frequently used (red) and has both side areas provided with a color more frequently used (black). When printing in red, the red part (a) of the ink ribbon is used, and when printing in black, the lower side part of the ink ribbon is opposed to the printing head 2, and this black part (b) is used for printing. Since the red-and-black ink ribbon 1 is in the form of a Mobius ring, when printing in black, the upper-side black part (b) and the lower-side black part (b) are used for printing alternately on each rotational movement of the ink ribbon. Namely, the useful life of this ink ribbon is two times that of a conventional tow-color ink ribbon.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an ink ribbon for an impact printer, and more particularly to a two-color ink ribbon shaped like a Möbius ring.

The conventional red and black ink ribbon is divided into upper and lower halves along the rotating direction, and one of the divided parts is colored red and the other is colored black.

The conventional red and black ink ribbon described above has two colors, upper and lower along the rotation direction, so the area of both red and black used for printing is small, even though red and black are used differently. There is a drawback that the ink ribbon reaches the end of its lifespan without being sufficiently used for red, which is the same color and is used less frequently.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a two-color ink ribbon that can have a longer ribbon life.

11.1 The ink ribbon of the present invention has a Möbius ring shape and is divided into three parts along the direction of rotation, with a less frequently used color arranged in the center and frequently used colors arranged on both sides. This is the structure.

Example Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the configuration of an embodiment of the present invention.

Möbius ring-shaped red and black ink ribbon 1, print head 2,
The device's usling-shaped red and black ink ribbon, which is made up of printing paper 3, is divided into three parts along the rotation direction, with a red color, which is less frequently used, in the center, and a black color, which is more frequently used, on both sides. There is.

2 and 3 show the operation using the Möbius ring-shaped red and black ink ribbon shown in FIG. 1. When using red a, the red and black ink ribbon shown in FIG. The red color a is used for printing. The operation of the red and black ink ribbons in two stages, upper and lower, for changing colors is the same as before, and in FIG. 3, the black ribbon in the lower stage is used. That is, when using a black ribbon, it is the lower side of the red and black ink ribbon that faces the print head 2, and this portion is used for printing. Since the red and black ink ribbon 1 has a Möbius ring shape, when printing in black, the upper and lower black strips are alternately used for printing each rotation. In other words, it has twice the lifespan compared to the conventional one. 7 As explained above, according to the Möbius ring-shaped red and black ink ribbon according to the present invention, it is divided into three parts along the rotation direction, and the red color, which is less frequently used, is arranged in the center, and the black color, which is more frequently used, is arranged on both sides. , and by using a Möbius ring shape, the upper and lower two-stage operation for changing colors is the same as before, but since the difference in frequency of use is taken into account, the lifespan of the frequently used black color can be doubled. This has the effect of greatly increasing the lifespan of the red and black ink ribbons.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram showing a case where red color is used for printing, and FIG. 3 is a diagram showing a case where black color is used for printing. Explanation of symbols of main parts 1... Möbius ring-shaped red and black ink ribbon 2.
・・・・・・Print head 3・・・・・・For printing

Claims (1)

[Claims] It is a two-color ink ribbon for impact printers, which is shaped like a Möbius ring and is divided into three parts along the direction of rotation, with less frequently used colors in the center and more frequently used colors on both sides. An ink ribbon for impact printers that is characterized by: