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Antifold Ribbon Guide Device

IP.com Disclosure Number: IPCOM000081482D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Hingstman, HF: AUTHOR

Abstract

When a typewriter ribbon is fed back into a cartridge such as the IBM "Selectric" II typewriter ribbon cartridge, folding of the ribbon can become a problem. When the ribbon folds, it presents a double thickness to the take-up spool and thus prevents full utilization of the ribbon within the cartridge.

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Antifold Ribbon Guide Device

When a typewriter ribbon is fed back into a cartridge such as the IBM "Selectric" II typewriter ribbon cartridge, folding of the ribbon can become a problem. When the ribbon folds, it presents a double thickness to the take-up spool and thus prevents full utilization of the ribbon within the cartridge.

To insure that the ribbon is properly taken up, it is necessary to unfold the ribbon if the ribbon has been folded.

It has been found that by inserting into the feed path (within the cartridge) of the ribbon an additional post or bar 1, the ribbon will tend to unfold at the point where it passes over the post and remain unfolded. The post 1 is longer than the ribbon is wide to provide flexibility of movement along the periphery of the post. The second post is then provided with guide collars 2 mounted on the tension post 3. This post, together with the guide collars 2, guide the ribbon onto the take-up spool to insure that it is evenly wound. By preventing the fold over of the ribbon in the cartridge, a more complete usage of the ribbon is possible.

This particular problem is common to both metrix type ribbons and to film type ribbons.

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