Does anyone know how a Epson Action Laser 1000 or 1500 determines paper size. I know how the printer tells if there is paper in the feeder but I can't find any sensor on the sizing bars. I am having a problem with it differentiating between a document and a envelope and I am attempting to troubleshoot it. thanks Mark Rode PCBUILD maintains hundreds of useful files for download visit our download web page at: http://freepctech.com/downloads.shtml