Begin forwarded message:
> From: Ben Green <greenb1 at mac.com> > Date: 19 March 2011 12:53:43 GMT > To: "m. allan noah" <kitno455 at gmail.com> > Cc: sane-devel at lists.alioth.debian.org > Subject: Re: [sane-devel] LIDE 60. configure scanner > > Hi Allan, > > I'm still hammering away at this scanner. I think I'm getting > somewhere, however I am afraid I have not killed off that > calibration completely yet. > Basically, the scanner is still going through some initial short > test sweeps to set the light levels. This might not be such a > problem, however the scanner now has its light disabled and will > eventually be covered and sealed in darkness with the only open area > being a 5" square in the middle of the scanning plate. > > At the moment if I cover the calibration area when scanning, I get > the following message.. > > scanimage > foo.png > [genesys_gl841] ********************************************** > [genesys_gl841] ********************************************** > [genesys_gl841] **** **** > [genesys_gl841] **** Extremely low Brightness detected. **** > [genesys_gl841] **** Check the scanning head is **** > [genesys_gl841] **** unlocked and moving. **** > [genesys_gl841] **** **** > [genesys_gl841] ********************************************** > [genesys_gl841] ********************************************** > scanimage: sane_start: Document feeder jammed > greenb1:~ greenb1$ > > Which stops the scan all together, so that's one bit of calibration > I need to override. I can still scan successfully with the cover off > (some ambient light hits the scan head initially). > > But also in the debug info, I can still see quite a bit of > calibrating and shading going on. I can now see "[genesys] > Calibration: Cannot open /Users/greenb1/.sane/canon-lide-60.cal" so > perhaps that's a good start? I'm hoping that you might be able to > see whether our _GENESYS_FLAG_NO_CALIBRATION edits in the backend > were successful?, or did I screw up the compiling part? > > If the GENESYS_FLAG_NO_CALIBRATION did work, then it looks like I > need to dig further to remove these calibration steps. But perhaps > it's just not compiled properly or I am still using the old backend > somehow. > > I have included the debug info from a normal (open top) scan as well > as the error (document jam) scan with the cover over the calibration > area. > > Any Ideas? > > also - just so I can get a handle on what the scanner is doing, I > assume the slope tables are something about setting the motor speed > to match the sampling rate. Is this correct? - is it a problem that > I can see > > " > [genesys] sanei_genesys_generate_slope_table: target slope: vstart: > 3500, vend: 1300, steps: 60, g: 0.8 > [genesys] Can not reach target speed(1300) in 1 steps. > [genesys] Expect image to be distorted. Ignore this if only feeding." > > > > Many Thanks for your advice, > > best > > Ben > large att removed. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110319/1e883859/attachment-0002.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: sane scan with black cover.rtf Type: text/rtf Size: 66210 bytes Desc: not available URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110319/1e883859/attachment-0001.bin> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110319/1e883859/attachment-0003.htm>
