JPS59190883A - Multicolor ink ribbon - Google Patents

Abstract

PURPOSE:To prolong the useful life of a ribbon for printing and enable to print in multiple colors, by constituting a multicolor ink ribbon by providing different colors symmetrically on upper and lower sides with a center line of an ink ribbon formed in a Mobius loop form as the axis of symmetry. CONSTITUTION:The ink ribbon 1 for a printer which ribbon is formed in a Mobius loop form is divided evenly into four sections in the width direction thereof, upper and lower 1/4-width sections are colored in black or red, while a central 1/2-width section is colored in red or black, whereby red color and black color are provided symmetrically on upper and lower sides with the center line of the ribbon 1 as the axis of symmetry. In this case, when the ribbon is so colored that the area of the black section is 2 times of that of the red section, a bicolor ink ribbon most suitable for red-black bicolor printing can be obtained. Accordingly, the arrangement of each of the colors is not changed even when the ribbon is turned face side back, and by combining the ink ribbon with a conventional multicolor color-changing mechanism, it is possible to prolong the useful life of the ribbon for printing through using the face and back sides of the ribbon and to print in multiple colors.

Description

[Detailed description of the invention] The present invention relates to an ink ribbon for a printer.

Conventionally, the ink ribbon of a printer has been made into a Möbius loop and the ribbon runs diagonally with respect to the printing line direction to extend the printing service life of the ink ribbon. However, this method uses the ink ribbon as a Möbius loop and uses both the front and back sides of the ink ribbon, so although it is good for single color printing, it is impossible to print in multiple colors.

An object of the present invention is to provide an ink ribbon for a printer that eliminates the above-mentioned drawbacks, increases the useful life of printing, and at the same time enables multicolor printing.

In order to achieve the above object, the multicolor ink-1 ribbon of the present invention has a configuration characterized in that different colors are arranged vertically symmetrically with the center line of the ink ribbon forming a Möbius loop as an axis of symmetry. Right 1-ru.

Hereinafter, the present invention will be described in detail with reference to the drawings. 1st
Figure 1 shows an ink ribbon of a printer made into a Möbius loop, and as shown in Figure 2, the ink ribbon is
It is divided into four equal parts in the 1" direction, with the top and bottom quarters each colored black or red, and the center half colored red or black.

That is, the ink ribbon 1 is colored red and black vertically symmetrically with the center line as the axis of symmetry.

In addition, FIG. 3 shows that the ink ribbon 1 formed into the Möbius loop is divided into three equal parts in the width direction, and the upper and lower 1/3 are black, and the center is black.
/3 in red.

In red and black two-color printing, it is generally said that the frequency of use of black is approximately 8 times that of red, so if the color arrangement is such that the black on the ink ribbon 1 is twice as loud as the red as described above, then the frequency of use of black is approximately 8 times that of red. A two-color ink ribbon optimal for color printing can be obtained.

Since the present invention has the above-described configuration, the arrangement of each color does not change even if the front and back sides are reversed. Therefore, in combination with the conventional multicolor color change mechanism, it is possible to extend the printing life of the ribbon by using the front and back sides of the ribbon, and at the same time, it becomes possible to perform multicolor printing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a plan view of the essential parts, and FIG. 3 is a plan view of the essential parts of another embodiment of the invention. 1... Ink ribbon. Patent applicant Citizen Watch Co., Ltd. Ai-3- Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A multicolor ink ribbon characterized by different colors arranged vertically symmetrically with the center line of the ink ribbon formed in a Möbius loop as an axis of symmetry.