JPS58220783A - Ribbon cassette mechanism - Google Patents

Abstract

PURPOSE:To enable to position a plurality of ribbon cassettes by the cassettes themselves, by providing positioning guides at predetermined parts of each of the ribbon cassettes so that each shaft of a plurality of ribbon cassettes is correctly engaged. CONSTITUTION:The first ribbon cassette 1 is mounted on a carrier 1, in which case a shaft 5a for a ribbon-feeding roller of the cassette 1 is engaged to a driving shaft 12a of a ribbon-driving motor 12 mounted on the carrier 11. The shaft 5a is so constructed as to be engaged with a ribbon-feeding shaft 5b of the second ribbon cassette 1'. In addition, a projected part 7a is provided at a lower part of the cassette 1, while a groove part 8a is provided at an upper part of the cassette 1. The groove part 8a is so constructed as to be engaged with the projected part 7a, so that when the second cassette 1' is mounted on the first cassette 1, the projected part 7b provided at a lower part of the cassette 1' is engaged to the groove part 8a provided at the upper part of the cassette 1. In this condition, when the motor 12 is driven, the ink ribbon 9 is fed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ribbon cassette mechanism, and more particularly to a ribbon cassette mechanism suitable for handling a plurality of ribbon cassettes.

In printing devices such as conventional wire dot printers, a ribbon cassette containing an endless ink ribbon is mounted on a carrier, and the ribbon is exposed from the ribbon cassette while being sequentially fed by a drive roller. Correspondingly, the print head is driven to print sequentially.

In the prior art, since a single ribbon cassette is mounted on a carrier, the outer shape of the ribbon cassette is often flat, and the ribbon cassette is positioned by another positioning mechanism.

By the way, in a printing device that mounts multiple print heads on a carrier and prints many lines at the same time, ribbon cassettes with different ribbon colors are arranged to correspond to each print head.
A technology has been developed to print multiple lines and multiple colors at the same time. In this case, it is necessary to provide a ribbon cassette positioning mechanism for each ribbon cassette.

OBJECTS OF THE INVENTION An object of the present invention is to provide a ribbon cassette mechanism that achieves positioning of a plurality of ribbon cassettes with a simple and easy structure.

Features of the Invention The present invention provides a printing device equipped with a plurality of ribbon cassettes, which has a guide for positioning the ribbon cassettes, and allows the plurality of ribbon cassettes to be stacked and mounted on a gear rear. It is something.

Thus, the ribbon cassettes are positioned by the guide, and any number of cassettes can be detachably attached.

EXAMPLE OF THE INVENTION Fig. 1 is a diagram showing the entire ribbon cassette according to an embodiment of the invention, and Fig. 2 is a side view of the ribbon cassette mechanism, particularly for explaining the connection and engagement of the cassette 5. It is a diagram.

In FIG. 1, a ribbon cassette 1 has a ribbon guide section 2.
5, a ribbon storage section 4, a ribbon feeding V roller 5, a presser roller 6, and a protrusion 7 and a groove 8 that are characteristic of this embodiment. The ink ribbon 9 is exposed at the opening 10 and is tightly stored in the ribbon storage section 4. That is, while being guided by the guide portion 2.3, the ink ribbon 9 is bitten by the ribbon feed roller 5 and the presser roller 26 pressed by the roller 5, and is sequentially fed by the rotation of the ribbon feed roller 5, and is then stored. It is sent to section 4.

During this ribbon feeding, a print head (not shown) corresponds to the opening 1o to enable desired printing on the paper.

FIG. 2 is a diagram for explaining the connection and engagement of the ribbon cassette. Make the explanation easier to understand 1. The carrier 11 and the second ribbon cassette 1 of the riverbank device are illustrated by two-dot chain lines. The ribbon cassette 1 is mounted on a carrier 11, and the ribbon feed roller shaft 5a of the ribbon cassette is connected and engaged with a motor drive shaft 12a of a ribbon drive motor 12 mounted on the carrier 11. This ribbon feed roller shaft 5a has a structure that connects and engages with the ribbon feed roller shaft 5b of the second ribbon cassette 1.

It has become. Furthermore, the ribbon cassette 1 has a protrusion 7a formed at the bottom and a groove 8a formed at the top. The groove portion 8a is connected and engaged with the projection portion 7a.

In this regard, when the second ribbon cassette 1 is mounted on the ribbon cassette 1 as shown in the drawing, it connects and engages with the groove 8a provided at the top of the ribbon cassette 1. Here, the di-ink ribbon 9 is fed by rotating the ribbon drive motor 12 in a predetermined direction.

If the fifth and fourth ribbon cassettes (not shown) are further mounted above the second ribbon cassette, the protrusions and grooves of each ribbon cassette must be connected and engaged in the same way as described above. It is easy to understand that this is a good thing. In this way, by stacking a plurality of silicon ribbon cassettes and engaging each protrusion below the groove, the silicon ribbon cassettes can be positioned.

Effects of the Invention According to the present invention, positioning of a plurality of ribbon cassettes can be performed with a single ribbon cassette, and the ribbon cassette mechanism itself can be simplified. In addition, there is no need for a special limit on the number of ribbon cassettes, so there is no need to make the mechanism the same as the one in the same book, and there is no limit to the number of ribbon cassettes! A printing device on the customer side that can be flexibly adapted is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a ribbon cassette according to an embodiment of the present invention, and FIG. 2 is a side view of the ribbon cassette mechanism. 1... Ribbon cassette 5... Ribbon feeding roller 2 6... Presser roller 7...
-Protrusion 8...Groove 11...Carrier 12...Ribbon drive motor embryo. 1st mouth 2nd n 403

Claims (1)

[Scope of claims] In a ribbon cassette mechanism in which a plurality of ribbon cassettes are stacked one on top of the other so that one drive roller shaft can drive the drive row 2 of the other ribbon cassette, the shaft of one ribbon cassette and the ribbon of the other A ribbon cassette mechanism characterized in that guides for positioning are provided at a predetermined portion of one ribbon force set and a predetermined portion of the other ribbon cassette so that the shafts of the cassettes are accurately engaged. ) The outer shape of the ribbon cassette is characterized in that one side has a protrusion shape and the other side has a groove that connects and engages with the shell protrusion to position and fix the cassette. (5) The ribbon cassette mechanism according to claim 1, further comprising a claw for latching the cassettes together.