audio cassette film grain isolated label magnetic music object record retro tape transparent white analog archival blue-and-white card data-storage documents durable enlargement fiche file files filing film flat-sheets grid-pattern magnification magnifier microfiche microform microreproductions miniature miniaturization miniaturized minimization negative pages photographic-image polyester pre-digital printed-information printing reading recorded records reduced reduction retrieval saved small small-sized space-saver storage storage-efficiency storage-space thin transmission transparent-film enlarger lens light machine projector screen