Aeg Olympia Aktiengesellschaft

Aeg Olympia Office Gmbh

Olympia Aktiengesellschaft

Manfred Sauer

Alfred Keiter

Hermann Jendricke

Heinz Lange

Rolf Behrens

Andreas Wesselhoft

Klaus-Dieter Frerichs

Hans-Peter Heins

Klaus D Frerichs

Hans P Heins

Ribbon cassettes for typewriters or office machines of similar construction are subject to differnt structural requirements and primarily they are to be easily exchangeable in a one-hand operation. Since additionally the ribbon cassettes are also designed as disposable components, many still functional individual parts are also discarded. To avoid this, ribbon cassettes are known which have exchangeable ribbon spools. It is the object of the invention to provide a reloadable ribbon cassette in which the exchange of ribbon spools (4, 5) is possible with few manipulations. The removal of the spent ribbon spools (4, 5) should here be possible without soiling the fingers. This problem is solved in that the take-up spool (5) and the supply spool (4) are arranged to be freely placeable onto bearing pins (11, 12) in the bottom member (6) and the movable parts for guiding and transporting the ribbon (8) in the bottom member (6), which has a cup-shaped configuration, are mounted on one side and, except for the take-up spool (5) and the supply spool (4) which are freely placeable onto the bearing pins (11, 12), are arranged to be arrestable against falling out of the cassette housing if the cover (2) is open. This permits exchange of the ribbon spools (4, 5) with few manipulations without the operator performing this exchange soiling his/her fingers. The exchange of ribbon spools (4, 5) is also possible for less experienced operators not having special skills.

Reloadable ribbon cassette for typewriters or office machines of similar

An end-of-ribbon sensing device for an office machine, which machine includes a printing station for receiving a nonreusable ribbon which is displaceable through the printing station and which has a scannable marking at its trailing end. The device includes: a receiving member mounted at the printing station for receiving the replaceable member; a ribbon scanning unit carried by the receiving member and having scanning elements for scanning the scannable marking disposed at the end of the ribbon and for generating a signal upon scanning of the scannable marking; a control circuit connected to the scanning unit for processing the signal generated by the scanning unit so as to generate a ribbon end signal; a covering element for selectively covering the scanning elements: and a support member supporting the covering element and carried by the receiving member, the support member being maintained in a first position, when a replaceable member is not present at the receiving member, in which the covering element covers the scanning elements, and the support member being movable in response to reception of a replaceable member by the receiving member into a second position in which the covering element is displaced so as to expose the scanning elements to the ribbon, the support member being returned to the first position upon removal of a replaceable member and the covering element being constructed for cleaning the scanning elements during return of the support member from the second position to the first position.

Ribbon device for typewriters or similar office machines

A ribbon cassette for an office machine, composed of: a cassette housing removably mountable in the machine, the housing having an entrance opening, an exit opening, an openable cover and elements constituting deflection points; a supply spool and a take-up spool having a core, each of the spools being removably mounted in the cassette housing; a carbon ribbon initially wound in the form of a coil on the supply spool, the ribbon having a leading end at the outer surface of the coil to be received by the take-up spool core to permit the ribbon to be wound up on the take-up spool while being unwound from the supply spool; and a fastening member secured to the leading end of the ribbon for threading the ribbon around the deflection points; and wherein the core is formed for enabling the fastening member to be fixed thereto to aid winding of the ribbon on the take-up spool.

Ribbon spools for a reloadable cassette for a typewriter or similar

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Wilhelmshaven, Germany

Manfred Sauer