Oldster's View

Fight Against Maturity

Technology revolutions that are gone

Before there were photocopiers, scanners and printers, there was the Ditto Machine (a.k.a. spirit duplicator), produced by the Illinois-based Ditto Corporation. Originally introduced in 1923, the Ditto Machine was a printing method that transferred ink onto a master copy made of smooth, waxy paper. An alcohol-based fluid (hence “spirit”) was then applied to transfer the image to a copy. Primarily used by schools and churches, the Ditto became less and less commonplace as other copying technologies were brought to market.

More via  Mother Nature Network

The best thing about taking a test in school was the smell of the Ditto copies. I can smell it now.

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January 20, 2011 - Posted by | Great Things

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