IBM mainframes in the 70's invariably came with the IBM 1403 high-speed band printer, which pretty much represented the apex of band-printing technology. They printed 132 column, 66 line pages of EBCDIC text at a few seconds per page (depending on how many lines were blank, which characters were being printed, and what band you had installed). They were about the size of a washer and dryer pair, and made a pretty big racket. The computer operators (!) loaded them with special "green band" paper stock that came in boxes about the size of a 12-ream box of printer paper you'd buy at OfficeDepot today, but it was all one big continuous z-fold piece, with sprocket holes down each side for the printer to grab and power it through the paper path. Jobs were printed with special "separator pages" to help to operators find where to split the perforated printouts and deliver them to the right users' collection bins.
Then in the 1980s, IBM came out with the 3800 laser printer, which was just insane for the time -- continuous form printing at speed, like a newspaper printing press. I got to operate them (my department had two).
> The computer operators (!) loaded them with special "green band" paper stock that came in boxes about the size of a 12-ream box of printer paper you'd buy at OfficeDepot today, but it was all one big continuous z-fold piece, with sprocket holes down each side for the printer to grab and power it through the paper path.
Loading paper onto those printers wasn't an easy or fun task; there were typically two tractor mechanisms, one below the printing area (usually inside the sound deadening enclosure), and one above it (still inside, but under the "lid" of the enclosure). You had to get things lined up just right, and then snap the feeds closed on the bottom (while kneeling and looking - sometimes with a flashlight - at an awkward angle under the printer, inside the enclosure, with a large box of paper in your way), then advance the paper past the print area, and align it properly with the second set of tractors, then close those - then run a test job. If all went well (which it usually did), you had things loaded and could continue with your other tasks.
Oh - and the cleaning of those printers - so much paper dust, plus the "chads" from the holes (not all were cleared on a run of paper, so the tractors would pop them out and they would get lost all over and inside the machine).
> Jobs were printed with special "separator pages" to help to operators find where to split the perforated printouts and deliver them to the right users' collection bins.
Fun times to find your "job" and split it off to take back to your cubicle; also fun to find someone else's job and deliver it to them on the way back. Sometimes they'd be thankful or surprised, but it was also fun to do it when they had gotten up to go to the printer - they'd get there, couldn't find their job (but could find the ones "around" it), go back to their desk in a huff, then sit down and find the printout on their desk...hehe.
I kinda miss those days (but I don't miss having to build and format reports - talk about a nightmare and thankless task).
