Browse Prior Art Database

Self-Adjusting Printer Ribbon Shield

IP.com Disclosure Number: IPCOM000035836D
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Griesedieck, JL: AUTHOR [+2]

Abstract

Disclosed is a snap-on-printer ribbon shield which self-adjusts to provide a consistent shield-to-print head ribbon path clearance gap.

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Self-Adjusting Printer Ribbon Shield

Disclosed is a snap-on-printer ribbon shield which self-adjusts to provide a consistent shield-to-print head ribbon path clearance gap.

Fig. 1 shows that the ribbon shield consists of a plastic bracket 1, to which spring steel shield 2 is attached by one end 3, the other end 4 remaining free to move. In the middle of shield is a dimple 5. Bracket 1 is provided with two snap latch arms 6, one on each side.

(Image Omitted)

Fig. 2 shows that, when the ribbon guide is installed, dimple 5 bears against printhead 7. Thus, regardless of the variable position of the print head due to tolerance build up, shield 2 is consistently positioned to provide clearance gap 8 for the passage of ribbon 9.

Referring to Fig. 3, it is readily seen that as ribbon shield 1 is brought up into position under print head 7, due to the shape of snap latch arms 6, they snap onto retaining latches 10 and hold the ribbon shield in place. It is also apparent that by applying finger pressure at points "P", the shield may be unlatched and removed.

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