On Mon, Aug 21, 2023 at 08:00:00AM -0500, Billy Croan wrote: > like CVS/Walgreens long > > Is there a scanner out there that can scan up to 24"? or 36?
I have a scanner that I purchased for exactly this reason: the Epson ES-50. It can scan up to 72 inches (182 cm) in length at 200 dpi. Unfortunately, the sane backend for this scanner doesn't currently support differing scan sizes per-resolution. I've submitted a merge request to fix this, but it has yet to be accepted due to lack of a maintainer for the backend. But for what it's worth, I've been running with my patch for close to a year with no issues. https://gitlab.com/sane-project/backends/-/merge_requests/753 > I've been folding and making a multipage PDF. Is there a better way? > > Is there a reason scanners must have a maximum length or could they just > stream data back to the PC continuously until the scan is complete. like a > toilet paper roll for example. > > I have no problem scanning a 700 page document if I keep that ADF feder > hopper full and keep the exit tray from filling up on my ADF scanners. But > what reasons are there, that a single page can not be say, 100 feet long? There's no reason it's not technically possible, but the API / protocol decisions made by most scanner designers preclude the possibility of infinite scans. My Epson scanner, for example, feeds JPEG data back. Even if all other limits were lifted, a single scan would still be limited to the JPEG format maximum of 65535 pixels in height. --Sean
