Hi, On Thu, Oct 31, 2002 at 10:43:08AM +0000, Nick Lindsell wrote: > I'm building a kiosk-based system that takes a scan, adds some text > converts to postscript and then prints. The frontend calls scanadf to do the > scan - problem is it runs too slow (about 1 minute per scan). > > I've found that the delay is caused by scanadf waiting for the > scanner lamp > to warm up every time it starts and when scanadf exits the scanner lamp > goes off. > Applications like Xsane keep the lamp lit while the app is open so > subsequent > scans are immediate but I need command-line.
Maybe it's easier to change the epson backend to not shut off the lamp in sane_close. E.g. by adding an option "keep-lamp-on" or similar. I've done that in the gt68xx backend. If the lamp warm-up is done automatically, that means, if the change of brightness is meassured, you should be done. Otherwise you must disable the fixed warm-up time, too (if this is possible). Bye, Henning
