A glitch recently discovered in Xerox's WorkCentre machines has been changing numbers on scanned documents, possibly for several years without the company's noticing.

The introduction of the Xerox 914 Plain Paper Copier, the first copy machine that ordinary office workers could use in ordinary office clothes to create dry, fast copies.

The arrival of the first copier was a watershed day for any 1960s-era office, as depicted in the TV series, "Mad Men" ("Believe me, this machine is a gift to you girls!"). Corporate success is not ...