[sane-devel] Scanner DocketPORT 468

Thu May 26 18:49:45 UTC 2011

Le jeudi 26 mai 2011 18:06:32 Enma Ai, vous avez écrit :
> Hi,
> 
> I have followed the indications from this site to recompile the backends:
> https://help.ubuntu.com/community/CheckIfScannerIsClone
> 
> sane-find-scanner -v -v (To identify Id of the vendor, product and chipset)
> 
> <device descriptor of 0x1dcc/0x4817 at 002:004 (Document Capture
> Technologies Inc. SimpleScan)>
> bLength               18
> bDescriptorType       1
> bcdUSB                2.00
> bDeviceClass          255
> bDeviceSubClass       255
> bDeviceProtocol       255
> bMaxPacketSize0       64
> *idVendor              0x1DCC
> idProduct             0x4817*
> bcdDevice             3.02
> *iManufacturer         10 (Document Capture Technologies Inc.)
> iProduct              11 (SimpleScan)*
> 
> ...
> 
> <trying to find out which USB chip is used>
>     checking for GL84x ...
> <This USB chip looks like a *GL842* (result from sane-backends 1.0.21)>
> found USB scanner (vendor=0x1dcc [Document Capture Technologies Inc.],
> product=0x4817 [SimpleScan], chip=GL842) at libusb:002:004
> 
> 
> 
> With the above information I found several possible compatible scanners
> with chip GL841, even though this scanner has GL842 and it is not
> supported.
> 
>  /* GL841 devices */
>   {0x04a7, 0x0474, &visioneer_xp300_model},
>   {0x04a7, 0x0494, &visioneer_roadwarrior_model},
>   {0x04a7, 0x049b, &visioneer_xp100_r3_model},
>   {0x04a7, 0x04ac, &xerox_travelscanner_model},
>   {0x04a9, 0x2213, &canon_lide_50_model},
>   {0x04a9, 0x221c, &canon_lide_60_model},
>   {0x07b3, 0x0900, &plustek_3600_model},
>   {0x0a17, 0x3210, &pentax_dsmobile_600_model},
>   {0x04f9, 0x2038, &pentax_dsmobile_600_model}, /* clone, only usb id is
> different */
>   {0x0a82, 0x4800, &syscan_docketport_485_model},
>   {0x0a82, 0x4802, &syscan_docketport_465_model},
>   {0x0a82, 0x4803, &syscan_docketport_665_model},
>   {0x0a82, 0x480c, &syscan_docketport_685_model},
>   {0x1dcc, 0x4810, &dct_docketport_487_model},
>   {0x1dcc, 0x4812, &syscan_docketport_467_model},
> 
> 
> I have tried with all the docketport and the scanner is recognized only by
> those with the same vendor id 0x1dcc:
> 
> //Different vendor id (for example 0x0a82, 0x4802,
> &syscan_docketport_465_model)
> scanimage -L
>     No scanners were identified.
> 
> //Same vendor id: 0x1dcc
> scanimage -L
>     device `genesys:libusb:002:007' is a DCT DocketPORT 487 flatbed scanner
> 
> But I get a warning and the scanner finally crashes:
> 
>     scanimage >image.pnm
>       [genesys] WARNING: Your scanner is not fully supported or at least
>       [genesys]          had only limited testing. Please be careful and
>       [genesys]          report any failure/success to
>       [genesys]          sane-devel at lists.alioth.debian.org. Please provide
> as many
>       [genesys]          details as possible, e.g. the exact name of your
>       [genesys]          scanner and what does (not) work.
>       ...
> 
> Only Docketport 467 worked and it got to scan, however the image was
> completely black and when I tried to scan again the scanner wasn't
> recognized any longer.
> 
> I will do some more tests with this model and I have also contact the
> manufacturer just in case they have a linux driver available. If I finally
> get it to scan I will post it.
> 
> Thanks for your help! :)
> 
> On 26 May 2011 17:07, Daniel Elm <delm at bulletscan.com> wrote:
> > The scanner should probably work since the backend says it works with the
> > Visioneer XP100r3/RoadWarrior/Xerox Travel Scanner, which I believe are
> > rebadged versions of the same model.
> > 
> > 
> > 
> > *From:*
> > sane-devel-bounces+delm=bulletscan.com at lists.alioth.debian.org[mailto:
> > sane-devel-bounces+delm=bulletscan.com at lists.alioth.debian.org] *On
> > Behalf Of *Enma Ai
> > *Sent:* Thursday, May 26, 2011 4:44 AM
> > *To:* sane-devel at lists.alioth.debian.org
> > *Subject:* [sane-devel] Scanner DocketPORT 468
> > 
> > 
> > 
> > 
> > Hi,
> > 
> > I'm trying to get to work scanner DocketPORT 468.
> > I already know it is not supported and I have found no discussions
> > related, however I'm giving it a try as the  genesys  backend  provides 
> > support for scanners based on the Genesys Logic GL646 and GL841 chips
> > and I have read in a discussion that GL842 is essentially the same as
> > the GL841.
> > 
> > My OS is: Linux version 2.6.35-28-generic (buildd at rothera) (gcc version
> > 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) )
> > 
> > I have (sane-backends) 1.0.21; backend version 1.0.21.
> > 
> > When connecting the scanner I get:
> > :dmesg
> > 
> > [ 3960.456090] usb 2-5: new high speed USB device using ehci_hcd and
> > address 9
> > 
> > :sane-find-scanner -v
> > 
> > found USB scanner (vendor=0x1dcc [Document Capture Technologies Inc.],
> > product=0x4817 [SimpleScan], chip=GL842) at libusb:002:008
> > 
> > :scanimage -V
> > 
> > scanimage (sane-backends) 1.0.21; backend version 1.0.21
> > 
> > But:
> > 
> > scanimage -L
> > No scanners were identified.
> > 
> > 
> > Any suggestions? Should I just forget about it and look for another
> > scanner? :)
> > 
> > Thanks and regards
> > Enma :)

	Hello,

	in fact most of the scanners supported by the gl841 code are gl842 ones. 
These ASICs are so close it doesn't matter.

	Experimenting with various models is the right thing to do, and 
docketport 467 seems a good choice. You must be aware that until they have 
been calibrated these sheet-fed scanners give poor quality scans (too dark, 
with vertical lines). They must be calibrated with the vendor supplied 
calibration card, by running scanimage with the --calibrate option, or click 
on the calibrate button of xsane.

Regards,
	Stef