Browse Prior Art Database

Ribbon Shield

IP.com Disclosure Number: IPCOM000063647D
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
King, LC Klein, FB Lewis, LD [+details]

Abstract

The ribbon shield shown in the figures is intended to space a ribbon away from the printed paper to avoid smudging and streaking. Some existing designs utilize only a dual thickness aperture shield which is thinned down in the region where the aperture exists. The improved design utilizes a step offset in the vertical plane of the shield to space the ribbon further from the paper in that region. This permits the use of a rectangular aperture which further reduces the amount of ribbon that is exposed to the paper and greatly reduces smudging and streaking. Fig. 1 illustrates a horizontal elevation of the shield 1 having an indented area 2 and a rectangular aperture 3. The shield is placed in front of the nose of a print head 5 and associated ribbon 4 to prevent casual contact between the ribbon and paper (not shown).