JPS63224986A - Ink ribbon cassette for typewriter or similar machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The subject of the invention is an ink ribbon cassette for a receiving device of a typewriter or similar machine, the receiving device being provided with a contoured hole. The hole relates to the ink ribbon cassette and is used for inserting a correspondingly formed protrusion into the ink ribbon cassette.

BACKGROUND OF THE INVENTION An ink ribbon cassette of this type is known, for example, from DE 32 13 669 and its supplementary application DE 3 220 404. However, the structure of the ink ribbon cassette proposed there and the necessary electronic reading device located on the machine side are very expensive. This is particularly disadvantageous because during reading there will be relative movement between the information on the ink ribbon cassette and the reading head. Furthermore, it takes a lot of time to identify whether the cassette is correct or incorrect.

OBJECT OF THE INVENTION It is an object of the invention to design an ink ribbon cassette in such a way that its identification can be carried out without loss of time and with simple and inexpensive means.

(Means for Solving the Problems) The problems of the present invention are solved by the configuration described in the features of claim 1.

(Effects of the Invention) The protrusion of the ink ribbon cassette corresponds to a key, and the blocking element in the recess corresponds to a lock. If the two match each other, a switch can be activated that enables or prevents operation of the machine. With a somewhat greater outlay in the range of blocking elements, additionally any ribbon type may be suitable for the cassette in order to optimally adjust the ribbon advance step for a given ribbon type upon insertion of the ribbon cassette. Machine recognition is achieved.

For this purpose, for example, contacts are arranged on the blocking element, which are opened and closed and compared with a code corresponding to the type of ink ribbon, which code is transmitted to the microprocessor of the machine.

(Example) Only a portion of the ink ribbon cassette 1 is shown in a side view in FIG. A protrusion 2 is formed on the lower surface of the ink ribbon cassette, and the protrusion can indicate, for example, a company trademark, as shown in FIG. The projections 2 have different height ranges 4 with respect to the base surface 3 of the ink ribbon cassette 10.

For better understanding, it may be added that the projection 2 in FIG. 1 corresponds to the view seen in the direction of the arrow B in FIG. In FIG. 3, range 4 corresponds to the sign part of the key. In this case, the base surface of the individual regions 40 can additionally run obliquely, as indicated by the dash-dot line of the projection 2 in FIG.

As is immediately clear, the arrangement and formation of the ink ribbon cassette 1 does not make the ink ribbon cassette 1 more expensive, since the ink ribbon cassette 1 is formed at the same time, for example, during injection of the ink ribbon cassette. Additional assembly costs are saved.

In addition to the ink ribbon cassette, FIG. 1 shows, for example, a lock 5, which is provided in the receiving device 6 of the ink ribbon cassette 1 on the machine side. Next, the cooperative action between the lock 5 and the protrusion 2 will be described. First, however, the structure of the lock 5 will be described. A center bore 8 is provided in the housing 7 on its upper side, which leads to an axially movable cylinder 9.

The holes are numbered 10 in the cylinder. The housing 7 has a bottom part 11 at the bottom, in the center of which a stamper 12 extends into the bore 10 of the cylinder 9. A spring 13 is tensioned between the bottom part 11 and the cylinder 9, which biases the cylinder 9 in the direction of the receiving device 6. A slit 15 is movably mounted in the off-axis bore 14, which slit is under the action of a further spring 16. pin 1
5 enters a hole 16 in the bottom part 11, in which an electric switch 17 is arranged below the hole 16.

Stamper 12 includes a laterally oriented slot 18.

A small shaft 19 is arranged above and parallel to this, on which a blocking element 20 is pivotably mounted. The blocking element has a finger 21 which is connected to a spring 2
It is under the action of 2. The spring connects the blocking element 20 to the finger 2
1 is the slot 1 when the cylinder 9 moves in the direction of the arrow C.
It cannot enter into the cylinder 8, but rather is urged to be supported by the cylinder 12. The number of blocking elements 20 corresponds to the number of regions 4 into which the projection 2 is divided. If the fingers 21 of all blocking elements 20 are directed toward the slot 18, the straight edge 23 corresponds to the angle through which the base surface of the region 4 passes.

When the ink ribbon cassette 1 is set on the storage device 6, the protrusion 2 enters the hole 8/10.

A contact between the area 4 of the projection 2 and the edge of the blocking element 20 then takes place. A region 4 is formed correspondingly to the blocking element 20 and coincident, ie, in cooperation with the key 22'' and the lock 5'' all the fingers 21 of the blocking element 20 are aligned on the slot 18 of the stamper 12. When the projection 2 is pushed in, the cylinder 9 moves against the spring 13 in the direction of the arrow C, so that the switch 17 is actuated by the pin 15 in the direction of the release of the machine. If only one blocking element 20 coincides with the area 4 of the projection 2, the corresponding finger 21 will not be directed into the slot 18. The finger 21 abuts the stamper 12 so that the cylinder 9 cannot be moved. In FIG. 1, a blocking element 20 which is not aligned is shown in dash-dotted lines. In this case, bin 15 is switch 1
7 cannot be activated. Further, the ink ribbon cassette 1 is not inserted until it is placed on the storage device 6.

This makes it possible to obtain a correspondingly equipped typewriter or similar machine in operation with the ink ribbon cassette 1 in a simple manner. The lock 5 shown in FIG. 1 is an example. Other configurations are also possible. For example, a pin, known as a safety cylinder lock, can also be provided.

[Brief explanation of the drawing]

1 is an ink ribbon cassette provided with a protrusion immediately before being placed on a storage device, FIG. 2 is a plan view of the protrusion, and FIG. 3 is a side view of the ink ribbon cassette as viewed in the direction of the arrow in FIG. Reference numeral 1 in the figure... Ink ribbon cassette 2... Protrusion 4... Range 8.10... Recess 17... Switch 20... Blocking element

Claims (2)

[Claims] (1) An ink ribbon cassette for a receiving device of a typewriter or similar machine, in which case the receiving device is provided with a contoured hole, which hole is provided with a correspondingly formed projection on the ink ribbon cassette. In said ink ribbon cassette, which is used for inserting the ink ribbon, the protrusion (2) is divided into individual ranges (4) of different heights and/or different inclinations, these ranges being connected to the recesses (
8, 10) a kind of locking element (20) arranged in
The ink ribbon cassette is characterized in that the ink ribbon cassette (1) coincides with the insertion of the ink ribbon cassette (1), thereby enabling a switch (17) disposed on the machine side to be actuated. (2) The ink ribbon cassette according to claim 1, wherein the contour of the projection (2) corresponds, for example, to the configuration of a corporate trademark.