Reloadable ribbon cassette for typewriters or office machines of

Details Reloadable ribbon cassette for typewriters or office machines of Reloadable ribbon cassette for typewriters or office machines of

1987-11-18

1990-04-03

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

4002081, 400242, B41J 3528, B41J 3200

Patent

active

049135724

ABSTRACT:
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.

REFERENCES:
patent: 3731781 (1973-05-01), Cavelill et al.
patent: 4368992 (1983-01-01), Sagnebin
patent: 4605327 (1986-08-01), Oehi et al.
patent: 4616845 (1986-10-01), Kamplin
patent: 4780010 (1988-10-01), Behrens et al.

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