I don't have control over the lamp, this is all handled by the scanner internally. I think I'm doing a reset again when the backend shuts down again, it's possible that this turns the lamp off as a side effect. The lamp should go off automatically after a certain time.
> 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 > _______________________________________________ > Sane-devel mailing list > sane-de...@www.mostang.com > http://www.mostang.com/mailman/listinfo/sane-devel
