Browse Prior Art Database

Dot Band Emitter Slot Shield

IP.com Disclosure Number: IPCOM000035424D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Cole, NF: AUTHOR [+3]

Abstract

In metal print band technology, it is known to use brushes, either fixed or rotating, to remove contaminating material from the print elements and/or the emitter slots of the band. However, even these processes require periodic removal and cleaning of the brushes. This article describes an improvement to these devices that eliminates the need for periodic removal of the band and brushes for cleaning.

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Dot Band Emitter Slot Shield

In metal print band technology, it is known to use brushes, either fixed or rotating, to remove contaminating material from the print elements and/or the emitter slots of the band. However, even these processes require periodic removal and cleaning of the brushes. This article describes an improvement to these devices that eliminates the need for periodic removal of the band and brushes for cleaning.

The figure shows schematically the invention in which either a permanent or, if required, a replaceable slotted shield - made from a polyimide type, such as KAPTON* film , is attached to the band safety cover. When the operator installs this cover/shield assembly over the band drive/hammer assembly of the printer, the shield provides a barrier between the ribbon and the band emitter slots. The slot in the shield allows the print elements on the band to directly impact the ribbon. A shield as wide as the band not only eliminates the band contamination problem but also improves the ergonomics of handling the band by the operator. Without the shield, the entire band, over time, gets contaminated with ink and other debris. The wide shield protects a larger area of the band from becoming contaminated and makes changing the band a clean hands task. * Trademark of
E. I. du Pont de Nemours & Co.

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