Posted 03 June 2008 - 11:54 AM
It turns out that installation is cable specific, so if you've borrowed a cable from someone else and installed a printer using that cable, you can't print using a different USB cable.
I Talked to the son of a friend who works for HP. He told me that each cable has a chip in the parallel connecting port. This is not a problem with newer printers (inkjets, laserjets, etc.). But if you are connecting to an old dot matrix printer; once you have installed the printer, you need to use that same cable to connect to all other dot matrix printers.
The solution, for the computer I was using, was to uninstall all the dot matrix printers in 'Printers and Faxes' folders -- then connect the new USB to parallel printer cable to that printer. Easy as pie. When I tested that computer on a couple of our other dot matrix printers, there were no problems.