JPS58219081A - Ribbon cartridge - Google Patents

Abstract

PURPOSE:To contrive to stably make a ribbon travel with compact outside dimensions, by a method wherein ribbon guide members are provided in a vertically downward direction with respect to a bottom face of a case, in a ribbon cartridge containing a loop form ribbon in a Mobius strip form. CONSTITUTION:The ribbon guide members 14a, 14b for guiding the loop form ribbon 9 to a printing position located at a tip part of a printing member 18 are provided in a vertically downward direction with respect to the bottom face of a ribbon cartridge case 10. The looped ribbon 9 is twisted by 90 between ribbon- supporting members 17a and 17b provided in the case 10, and is fed into a ribbon-containing part 16 by a ribbon-feeding roller member 11 and a ribbon pushing-up roller member 12. Immediately after being discharged from the containing part 16, the ribbon 9 is twisted further by 90 deg. in the same direction as above between ribbon-supporting members 17c and 17d, and is supported by tips of the guide members 14a, 14b.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ribbon cartridge having an endless ribbon, and more particularly to a ribbon cartridge having an endless ribbon forming a Möbius pattern.

Conventionally, in order to extend the life of the ribbon, a method of forming an endless ribbon into a Möbius pattern has been known. For example, as shown in FIG.
6α between the ribbon support members 4 and 5.
The ribbon guide member 1α, 16 was twisted 180 degrees as shown in FIG. In conventional ribbon cartridges arranged in this way, if the ribbon supporting members are spaced at a distance of 4°50 to a certain extent, the ribbon cannot be twisted properly, causing creases and ribbon breakage during running. , Since stable ribbon running is impossible, the external dimension A of the ribbon cartridge case is large, and the ribbon guide member 1α.

Since 1b is arranged flat on the ribbon cartridge case, the external dimensions from the back of the ribbon cartridge case 2 to the tip of the ribbon guide member 1cL and 1b inevitably become long. The layout of the printer was an obstacle to miniaturization of printers.

The present invention has been made to eliminate such drawbacks, and its object is to provide a compact ribbon cartridge with stable ribbon running, which can reduce the external dimensions of the printer as a whole.

In order to achieve the above object, the present invention provides a ribbon guide member that guides the endless ribbon to a predetermined printing position vertically below the bottom surface of the ribbon cartridge case, and also uses a Möbius ribbon to form a Möbius ribbon at 180 degrees. This ribbon cartridge is constructed so that the twist is divided twice at the inlet side and the outlet side of the ribbon, each having a different degree of distribution.

The present invention will be described in detail below based on Examples.

In FIG. 1, reference numeral 9 denotes an endless ribbon forming a Möbius pattern, which is twisted between ribbon supporting members 17α and 17b provided inside the ribbon cartridge case 10, and is twisted by the ribbon feeding roller member 11 and the ribbon pushing roller member 12. Ribbon storage section 16. sent to. Immediately after leaving the storage section 16, the ribbon 9 is twisted an additional 90 degrees between the ribbon support members 17c and 17d in the same direction as the previous 90 degree twist, and the endless ribbon 9 is twisted at the tip of the printing member 18. Ribbon guide members 14α, 14b that guide to the printing position
is supported at both ends. The ribbon guide member 14
α and 14b are provided vertically downward with respect to the bottom surface of the ribbon cartridge case 10. The ribbon cartridge according to the present invention having such a configuration has the ribbon 9 twisted by (3) degrees between the ribbon guide members 17α and 17b and between 17c and 17d to perform Möbius treatment. 17α, 17b interval and 1
Even if the distance between 7C217d was shortened, the ribbon did not wrinkle or break, allowing stable running. Therefore, the external dimensions of the ribbon cartridge case can be reduced, and a compact ribbon cartridge can be provided.

In addition, since the ribbon guide members 14α and 146 are provided vertically downward with respect to the bottom surface of the ribbon cartridge case 10, the external dimension B from the printing position to the top surface of the ribbon cartridge can be reduced, as seen from the printer layout. , it became possible to downsize printers.

FIG. 2 is a partial detailed view showing another embodiment of the present invention, and 19α and 19b are 17a and 17blfC in FIG.
A corresponding ribbon support member is shown.

By forming the ribbon support member into a cylinder having a cross-sectional shape with a large diameter at the center, it is possible to completely prevent ribbon wrinkles, folds, etc. that tend to occur when twisting the endless ribbon 9 by 90 degrees. This is effective for stable ribbon running.

The present invention provides a ribbon cartridge equipped with an endless ribbon forming a Möbius pattern, in which a ribbon guide member is provided perpendicularly downward to the bottom surface of the cartridge case, and a 180 degree twist for forming a Möbius pattern is provided at the front stage of the ribbon feeding means. After leaving the ribbon storage section, the ribbon guide members on the left and right sides are made to make it easy to use Möbius, which is used to extend the life of the di-ink ribbon. It is possible to provide a ribbon cartridge that runs stably.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a ribbon car (IJ Tsuji) according to the present invention. 9#'i endless ribbon, l() is a ribbon cartridge case, 11 is a ribbon feeding roller member, 12
teeth! J-pon push roller member, 14α, 14b are ribbon guide members, 16 is ribbon storage section, 17α, 17b, i7
C indicates a ribbon support member, and 18 indicates a printing member. FIG. 2 is a partially detailed view showing another embodiment according to the invention. 19α and 19b indicate ribbon support members. FIG. 3 is a plan sectional view showing a conventional ribbon cartridge. Applicant Shinshu Seiki Co., Ltd. Agent Patent Attorney Mogami Figure 2 J Figure 3

Claims (1)

[Claims] (1) In a ribbon cartridge for a printer that stores an endless ribbon forming a Möbius pattern, a pair of ribbon guide members that guide the ribbon to the printing position are formed vertically downward with respect to the bottom surface of the ribbon cartridge case. A ribbon cartridge featuring (21) The endless ribbon is twisted in front of the ribbon feeding means while inside the cartridge case, and further twisted by 90 degrees in the same direction as the twisting after passing through the feeding means and coming out of the ribbon storage section. A ribbon cartridge according to claim 1, characterized in that: