She still refers to printing anything as "running off" a copy, and she occasionally still calls the copies "dittos." When she uses either phrase or term, I still almost gag at the memory of that smell.
Oh yeah, those blurry purple pages that were usually half faded because they'd try to make too many copies from one master … I had those all through elementary school (in the 80s). The school had a photocopier but teachers weren't allowed to use it except to make masters for the ditto machine (a
spirit duplicator). This was a somewhat convoluted process. They would first use the Xerox photocopier to make a good black and white copy of something, then they would put that copy through a
Thermofax machine with a special heat-sensitive spirit master sheet to make a master for the Ditto machine, then they'd put that master page into the Ditto machine to make the faded purple copies that we kids would use.
Sometimes a teacher would need to make copies of something for which they only had ditto copies. But a ditto copy couldn't be used with the Thermofax machine to make a new ditto master, so sometimes teachers would make a photocopy of the ditto page (with the brightness and contrast settings maxed out to get a somewhat usable image) and then feed that through the Thermofax to make a new ditto master. The copies you got off those were extremely bad, but we lived with it.
It's no wonder the copy room smelled like a chemistry lab with all that going on.
That was only at the elementary school. My dad taught at the high school and they were allowed to make photocopies for everything and no longer had the Ditto and Thermofax machines. (I think they got moved to the journalism classroom for a while, but I think they had been junked by the time I was in high school in the 90s.) I think we mostly got photocopies at my junior high, too.
To bring this back on topic it would be fun to see those old technologies be used in the silos, but I guess they don't have enough paper to make it worthwhile.