| 摘要 |
A device is provided for protecting a transparent display sheet bearing material thereon for projected display. Such protective devices typically employ blank, opaque backing sheets that are secured to a pair of transparent protective sheets forming a pocket for the display sheet, or directly to the display sheet itself. According to the invention, and unlike prior systems, the backing sheet is divided by a longitudinal fold into a pair of panels. One of these panels resides immediately adjacent the edge at which the backing sheet is connected to the transparent display sheet. The other panel is located remote from the connecting edge of the backing sheet, and may be folded back beneath the first panel so that the entire structure will fit atop the stage of a conventional machine for projecting images from transparent display sheets. This construction prevents the backing sheet from overhanging the edge of the stage and falling off during a presentation.
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