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xsane can't see Brother ADS-2700W scanner
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Charlie Gibbs
Mar 30, 2021, 10:50:04 PM3/30/21
to
I just got a Brother ADS-2700W sheet-fed scanner and am trying
to access it from xsane. I've done a lot of flatbed scanning,
first with an HP 3970, and lately with an Epson WF-2650 all-in-one,
but I have a lot of old manuals I want to scan and upload to
Bitsavers, and a sheet feeder will speed the process along.
The Brother got a lot of good reviews so I decided to give it a try.
It offers many options, such as e-mail, [S]FTP, etc. over Ethernet,
wi-fi, and USB. But so far, I haven't been able to get xsane to
recognize it. My wife tried to get at it from her Macbook (which
accesses the Epson with no trouble), but had no luck either.
It's not a connectivity issue - the scanner happily connects
to my wi-fi and gets an IP address, and I can access it from
a web browser and get at all of its configuration screens.
But neither xsane nor my wife's Macbook can see it.
The one way I did manage to get the scanner to work was to a
USB flash drive. It quickly sucked in a handful of sheets,
scanned both sides, and wrote them to a file on the stick.
If all else fails, I can work with it that way. But I'd
really like to let xsane manage the process.
I'm beginning to wonder, though, whether fashions are changing.
Scanners nowadays seem to want to push data to a server, rather
than being commanded to scan by a computer. Is this really
happening? If so, whither (or should that be "wither") xsane?
If anyone has gotten one of these newfangled machines to work
as a slave, rather than a master, please share your secrets.
aTdHvAaNnKcSe...
--
/~\ Charlie Gibbs | They don't understand Microsoft
\ / <cgi...@kltpzyxm.invalid> | has stolen their car and parked
X I'm really at ac.dekanfrus | a taxi in their driveway.
/ \ if you read it the right way. | -- Mayayana
to access it from xsane. I've done a lot of flatbed scanning,
first with an HP 3970, and lately with an Epson WF-2650 all-in-one,
but I have a lot of old manuals I want to scan and upload to
Bitsavers, and a sheet feeder will speed the process along.
The Brother got a lot of good reviews so I decided to give it a try.
It offers many options, such as e-mail, [S]FTP, etc. over Ethernet,
wi-fi, and USB. But so far, I haven't been able to get xsane to
recognize it. My wife tried to get at it from her Macbook (which
accesses the Epson with no trouble), but had no luck either.
It's not a connectivity issue - the scanner happily connects
to my wi-fi and gets an IP address, and I can access it from
a web browser and get at all of its configuration screens.
But neither xsane nor my wife's Macbook can see it.
The one way I did manage to get the scanner to work was to a
USB flash drive. It quickly sucked in a handful of sheets,
scanned both sides, and wrote them to a file on the stick.
If all else fails, I can work with it that way. But I'd
really like to let xsane manage the process.
I'm beginning to wonder, though, whether fashions are changing.
Scanners nowadays seem to want to push data to a server, rather
than being commanded to scan by a computer. Is this really
happening? If so, whither (or should that be "wither") xsane?
If anyone has gotten one of these newfangled machines to work
as a slave, rather than a master, please share your secrets.
aTdHvAaNnKcSe...
--
/~\ Charlie Gibbs | They don't understand Microsoft
\ / <cgi...@kltpzyxm.invalid> | has stolen their car and parked
X I'm really at ac.dekanfrus | a taxi in their driveway.
/ \ if you read it the right way. | -- Mayayana
Alexander V. Makartsev
Mar 31, 2021, 1:00:05 AM3/31/21
to
On 31.03.2021 07:24, Charlie Gibbs
wrote:
If anyone has gotten one of these newfangled machines to work
as a slave, rather than a master, please share your secrets.
aTdHvAaNnKcSe...
Have you tried to install a sane backend driver coming as a .deb
package from Brother website?
https://support.brother.com/g/b/downloadtop.aspx?c=eu_ot&lang=en&prod=ads2700w_us_eu_as
https://support.brother.com/g/b/downloadtop.aspx?c=eu_ot&lang=en&prod=ads2700w_us_eu_as
-- With kindest regards, Alexander. ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org ⠈⠳⣄⠀⠀⠀⠀
Dan Ritter
Mar 31, 2021, 7:20:04 AM3/31/21
to
Charlie Gibbs wrote:
>
> I'm beginning to wonder, though, whether fashions are changing.
> Scanners nowadays seem to want to push data to a server, rather
> than being commanded to scan by a computer. Is this really
> happening? If so, whither (or should that be "wither") xsane?
In office environments, with shared resources, this is often
>
> I'm beginning to wonder, though, whether fashions are changing.
> Scanners nowadays seem to want to push data to a server, rather
> than being commanded to scan by a computer. Is this really
> happening? If so, whither (or should that be "wither") xsane?
preferable. Having the scanner drop everything into a
samba-shared filesystem, for example...
-dsr-
Eduardo M KALINOWSKI
Mar 31, 2021, 8:30:05 AM3/31/21
to
On 30/03/2021 23:24, Charlie Gibbs wrote:
> The one way I did manage to get the scanner to work was to a
> USB flash drive. It quickly sucked in a handful of sheets,
> scanned both sides, and wrote them to a file on the stick.
> If all else fails, I can work with it that way. But I'd
> really like to let xsane manage the process.
>
Which sane backend are you using?
> The one way I did manage to get the scanner to work was to a
> USB flash drive. It quickly sucked in a handful of sheets,
> scanned both sides, and wrote them to a file on the stick.
> If all else fails, I can work with it that way. But I'd
> really like to let xsane manage the process.
>
Most new scanners support airscan, so try installing sane-airscan. Note
that for your scanner to be discovered you need avahi-daemon running.
(Or maybe you just need avahi-utils).
Brother generally offers proprietary drivers, including a Sane backend.
Did you install that?
--
The most disagreeable thing that your worst enemy says to your face does
not approach what your best friends say behind your back.
-- Alfred De Musset
Eduardo M KALINOWSKI
edu...@kalinowski.com.br
Brian
Mar 31, 2021, 10:40:05 AM3/31/21
to
On Wed 31 Mar 2021 at 09:23:31 -0300, Eduardo M KALINOWSKI wrote:
> On 30/03/2021 23:24, Charlie Gibbs wrote:
> > The one way I did manage to get the scanner to work was to a
> > USB flash drive. It quickly sucked in a handful of sheets,
> > scanned both sides, and wrote them to a file on the stick.
> > If all else fails, I can work with it that way. But I'd
> > really like to let xsane manage the process.
> >
> Which sane backend are you using?
'scanimage -L' will be informative.
> On 30/03/2021 23:24, Charlie Gibbs wrote:
> > The one way I did manage to get the scanner to work was to a
> > USB flash drive. It quickly sucked in a handful of sheets,
> > scanned both sides, and wrote them to a file on the stick.
> > If all else fails, I can work with it that way. But I'd
> > really like to let xsane manage the process.
> >
> Which sane backend are you using?
> Most new scanners support airscan, so try installing sane-airscan. Note that
> for your scanner to be discovered you need avahi-daemon running. (Or maybe
> you just need avahi-utils).
useful to know the output of
avahi-browse -rt _uscan._tcp
and which Debian version is in use.
avahi-brows is in the avahi-utils package.
--
Brian.
Hans
Mar 31, 2021, 10:50:04 AM3/31/21
to
Am Mittwoch, 31. März 2021, 14:23:31 CEST schrieb Eduardo M KALINOWSKI:
Hi,
please check in /lib/udev/rules.d/*-libsane1.rules if there is an entry for your scanner. In my case with a brother scanner I had to manually add it, as the brother packages installation is missing this.
Good luck!
Best
Hans
ghe2001
Mar 31, 2021, 11:40:04 AM3/31/21
to
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
Yeah. I had a similar problem getting xsane to recognize my Fujitsu ScanSnap 1300. I searched the web on model number and found a detailed howTo to make it work. (The manual add involved downloading a driver and editing a couple files.)
--
Glenn English
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--
Glenn English
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David Wright
Mar 31, 2021, 4:30:04 PM3/31/21
to
On Wed 31 Mar 2021 at 07:18:14 (-0400), Dan Ritter wrote:
the alternatives were (a) walking to a room with "the" public scanner,
connected to a dedicated computer, and coordinating between holding
a book on the platen and pressing buttons on the screen with a mouse,
or (b) pushing a USB stick into a giant photocopier and pretending
to copy it. Also (b) had the super document feeder (1/2 sided)
and could scan up to A3, whereas (a) had a limp rubbery cover over
the A4 platen glass.
Well, yes. What's the point of controlling the scanner from your
disk when you've got to *at least* visit the scanner to place the
document in the feed hopper—why not just press a button to start
it, while you're there?
And obviously there are cases where the feeding has to be done
manually. In fact, most of my scanning is like this. (Why are
multiple-page documents being printed in the first place, so that
people have to scan them back in?)
Scanning the output to a server just seems plain obvious to me.
What's the downside?
Cheers,
David.
> Charlie Gibbs wrote:
> > The one way I did manage to get the scanner to work was to a
> > USB flash drive. It quickly sucked in a handful of sheets,
> > scanned both sides, and wrote them to a file on the stick.
> > If all else fails, I can work with it that way. But I'd
> > really like to let xsane manage the process.
That's the way I've always scanned anything. Earlier this century,
> > The one way I did manage to get the scanner to work was to a
> > USB flash drive. It quickly sucked in a handful of sheets,
> > scanned both sides, and wrote them to a file on the stick.
> > If all else fails, I can work with it that way. But I'd
> > really like to let xsane manage the process.
the alternatives were (a) walking to a room with "the" public scanner,
connected to a dedicated computer, and coordinating between holding
a book on the platen and pressing buttons on the screen with a mouse,
or (b) pushing a USB stick into a giant photocopier and pretending
to copy it. Also (b) had the super document feeder (1/2 sided)
and could scan up to A3, whereas (a) had a limp rubbery cover over
the A4 platen glass.
disk when you've got to *at least* visit the scanner to place the
document in the feed hopper—why not just press a button to start
it, while you're there?
And obviously there are cases where the feeding has to be done
manually. In fact, most of my scanning is like this. (Why are
multiple-page documents being printed in the first place, so that
people have to scan them back in?)
Scanning the output to a server just seems plain obvious to me.
What's the downside?
Cheers,
David.
Stefan Monnier
Mar 31, 2021, 5:10:04 PM3/31/21
to
> Scanning the output to a server just seems plain obvious to me.
> What's the downside?
It has its advantages, indeed. On the downsides:
> What's the downside?
- the scanner usually has a very limited UI, making it
difficult/inconvenient (if at all possible) to control and select the
scanning options, compared to the comfort of a large screen.
- scanning to a server implies allowing the scanner device write access
to a server, which either implies the users authenticating themselves
on the scanner itself (which is rather problematic and is compounded
with the previous downside), or making the scan result land on an
"anonymous" area where anyone can see what anyone else scans.
- It usually means you're stuck with the functionality that the
manufacturer decided to include in the scanner's software stack,
because it's always proprietary or "walled" (it may contain Free
Software for all I know, but I can't access nor modify the code).
The option I favor is that the scan is controlled by your own computer,
but you can trigger new scans by hitting buttons on the scanner
(i.e. the button-presses get sent to your computer who then decides
what action to take in response to them), so that you can comfortably
setup the scan parameters on your computer and then you can comfortably
scan the various documents without having to go back to your computer
between them.
Sadly, I haven't figured out how to do that yet :-(
Stefan
Celejar
Mar 31, 2021, 11:00:06 PM3/31/21
to
https://wiki.archlinux.org/index.php/SANE/Scanner-specific_problems#Network_Scanning
Celejar
David Pottage
Apr 1, 2021, 4:30:05 AM4/1/21
to
On 2021-03-31 22:05, Stefan Monnier wrote:
>> Scanning the output to a server just seems plain obvious to me.
>> What's the downside?
>
> It has its advantages, indeed. On the downsides:
>
> - the scanner usually has a very limited UI, making it
> difficult/inconvenient (if at all possible) to control and select the
> scanning options, compared to the comfort of a large screen.
>
> - scanning to a server implies allowing the scanner device write access
> to a server, which either implies the users authenticating themselves
> on the scanner itself (which is rather problematic and is compounded
> with the previous downside), or making the scan result land on an
> "anonymous" area where anyone can see what anyone else scans.
>
> - It usually means you're stuck with the functionality that the
> manufacturer decided to include in the scanner's software stack,
> because it's always proprietary or "walled" (it may contain Free
> Software for all I know, but I can't access nor modify the code).
>
> The option I favour is that the scan is controlled by your own
>> Scanning the output to a server just seems plain obvious to me.
>> What's the downside?
>
> It has its advantages, indeed. On the downsides:
>
> - the scanner usually has a very limited UI, making it
> difficult/inconvenient (if at all possible) to control and select the
> scanning options, compared to the comfort of a large screen.
>
> - scanning to a server implies allowing the scanner device write access
> to a server, which either implies the users authenticating themselves
> on the scanner itself (which is rather problematic and is compounded
> with the previous downside), or making the scan result land on an
> "anonymous" area where anyone can see what anyone else scans.
>
> - It usually means you're stuck with the functionality that the
> manufacturer decided to include in the scanner's software stack,
> because it's always proprietary or "walled" (it may contain Free
> Software for all I know, but I can't access nor modify the code).
>
> computer,
> but you can trigger new scans by hitting buttons on the scanner
> (i.e. the button-presses get sent to your computer who then decides
> what action to take in response to them), so that you can comfortably
> setup the scan parameters on your computer and then you can comfortably
> scan the various documents without having to go back to your computer
> between them.
Sounds like we have yet another use for a Raspberry Pi or similar small
> but you can trigger new scans by hitting buttons on the scanner
> (i.e. the button-presses get sent to your computer who then decides
> what action to take in response to them), so that you can comfortably
> setup the scan parameters on your computer and then you can comfortably
> scan the various documents without having to go back to your computer
> between them.
and cheap computer.
Hook it up to a dumb USB scanner, the local network and a touch screen.
Users can walk up, put their originals in the scanner, and use a much
richer UI to chose their scanning options. The scans are emailed to them
in their preferred file format using the email address they gave when
they authenticated.
I wonder if such an open source project already exists?
--
David Pottage
Charlie Gibbs
Apr 1, 2021, 9:30:05 PM4/1/21
to
On 2021-04-01 3:51 a.m., Brian Potkin wrote:
> Hello Charlie,
>
> It would appear that you are not subscribed to debian-user. Have you
> seen all the replies to your post that await you there?
Yes, I have. I just haven't had time to act on them. I did download
a driver from the Brother site but it had no effect. I suspect there's
something I'll have to do with xsane to get it to find the scanner.
(And then I'll have to go through it again with my wife's Macbook.)
Meanwhile I tried setting it up to use sftp, but I haven't managed
to get the authentication worked out yet. Oh well, worst case I can
scan to a thumb drive. It does that well - and fast.
> Apologies for the intrusion.
No worries. Thanks for the note. I'm hoping to find time this
weekend to try out some of the things that have come through on
the list. I'll post a summary of my results when I get them.
--
/~\ Charlie Gibbs | Microsoft is a dictatorship.
\ / <cgi...@kltpzyxm.invalid> | Apple is a cult.
X I'm really at ac.dekanfrus | Linux is anarchy.
/ \ if you read it the right way. | Pick your poison.
> Hello Charlie,
>
> It would appear that you are not subscribed to debian-user. Have you
> seen all the replies to your post that await you there?
Yes, I have. I just haven't had time to act on them. I did download
a driver from the Brother site but it had no effect. I suspect there's
something I'll have to do with xsane to get it to find the scanner.
(And then I'll have to go through it again with my wife's Macbook.)
Meanwhile I tried setting it up to use sftp, but I haven't managed
to get the authentication worked out yet. Oh well, worst case I can
scan to a thumb drive. It does that well - and fast.
> Apologies for the intrusion.
No worries. Thanks for the note. I'm hoping to find time this
weekend to try out some of the things that have come through on
the list. I'll post a summary of my results when I get them.
--
/~\ Charlie Gibbs | Microsoft is a dictatorship.
\ / <cgi...@kltpzyxm.invalid> | Apple is a cult.
X I'm really at ac.dekanfrus | Linux is anarchy.
/ \ if you read it the right way. | Pick your poison.
Alexander V. Makartsev
Apr 2, 2021, 6:30:05 AM4/2/21
to
On 02.04.2021 06:11, Charlie Gibbs
wrote:
On 2021-04-01 3:51 a.m., Brian Potkin wrote:
Hello Charlie,
It would appear that you are not subscribed to debian-user. Have you
seen all the replies to your post that await you there?
Yes, I have. I just haven't had time to act on them. I did download
a driver from the Brother site but it had no effect. I suspect there's
something I'll have to do with xsane to get it to find the scanner.
I've poked that driver a bit and it looks like only USB-connection
is well supported, and there is no "Scan from your Computer (Linux)"
section in the manual either. [1]
There is a mention about "conf_ip" utility, but it looks like Brother began to implement "Direct Scan over Network" feature and never finished.
You might try to follow the instructions from "How to Install" section [2] and setup IP address of the scanner on PC:
$ sudo conf_ip 192.168.xxx.xxx
All things considered, it might be indeed easier to setup FTP/SFTP or CIFS (Samba) server on your PC and create a scanner profile to scan directly into FTP directory or SMB share. [3]
Even workflow looks more efficient that way:
[Go to scanner] > [Place documents] > [Select profile] > [Start scanning] > [Retrieve documents] > [Go back to PC]
In comparison to:
[Go to scanner] > [Place documents] > [Go back to PC] > [Select profile] > [Start scanning] > [Go to scanner] > [Retrieve documents] > [Go back to PC]
[1] https://support.brother.com/g/s/id/htmldoc/ads/cv_ads2200/uke/index.html?c=eu_ot&lang=en&prod=ads2700w_us_eu_as#GUID-323B4D6E-6CAF-4A35-B1AC-7F8F110EAE06_25
[2] https://support.brother.com/g/b/downloadhowto.aspx?c=eu_ot&lang=en&prod=ads2700w_us_eu_as&os=128&dlid=dlf103479_000&flang=4&type3=566
[3] https://support.brother.com/g/s/id/htmldoc/ads/cv_ads2200/uke/index.html?c=eu_ot&lang=en&prod=ads2700w_us_eu_as#GUID-286EDD29-0309-47AD-82F6-94D735A816D0_36
There is a mention about "conf_ip" utility, but it looks like Brother began to implement "Direct Scan over Network" feature and never finished.
You might try to follow the instructions from "How to Install" section [2] and setup IP address of the scanner on PC:
$ sudo conf_ip 192.168.xxx.xxx
All things considered, it might be indeed easier to setup FTP/SFTP or CIFS (Samba) server on your PC and create a scanner profile to scan directly into FTP directory or SMB share. [3]
Even workflow looks more efficient that way:
[Go to scanner] > [Place documents] > [Select profile] > [Start scanning] > [Retrieve documents] > [Go back to PC]
In comparison to:
[Go to scanner] > [Place documents] > [Go back to PC] > [Select profile] > [Start scanning] > [Go to scanner] > [Retrieve documents] > [Go back to PC]
[1] https://support.brother.com/g/s/id/htmldoc/ads/cv_ads2200/uke/index.html?c=eu_ot&lang=en&prod=ads2700w_us_eu_as#GUID-323B4D6E-6CAF-4A35-B1AC-7F8F110EAE06_25
[2] https://support.brother.com/g/b/downloadhowto.aspx?c=eu_ot&lang=en&prod=ads2700w_us_eu_as&os=128&dlid=dlf103479_000&flang=4&type3=566
[3] https://support.brother.com/g/s/id/htmldoc/ads/cv_ads2200/uke/index.html?c=eu_ot&lang=en&prod=ads2700w_us_eu_as#GUID-286EDD29-0309-47AD-82F6-94D735A816D0_36
Brian
Apr 2, 2021, 8:10:07 AM4/2/21
to
issue, I would stronly suggest Eduardo M KALINOWSKI's advice to use
sane-airscan as the first avenue of approach.
* sane-airscan is a free, well-supported SANE backend.
* The manual for the ADS-2700W indicates it supports scanning from
an iPhone. This is only possible if the scanner supports the eSCL
protocol.
* sane-airscan also understands the eSCL protocol and should be able
to talk to the scanner.
* Downloading, installing and testing sane-airscan is a ten minute
task.
Note: Xsane communicates with a scanner via a SANE backend. If the
latter is suboptimal, Xsane can do nothing about it.
--
Brian.
Brian
Apr 2, 2021, 1:30:05 PM4/2/21
to
On Wed 31 Mar 2021 at 17:05:57 -0400, Stefan Monnier wrote:
[...]
> The option I favor is that the scan is controlled by your own computer,
> but you can trigger new scans by hitting buttons on the scanner
> (i.e. the button-presses get sent to your computer who then decides
> what action to take in response to them), so that you can comfortably
> setup the scan parameters on your computer and then you can comfortably
> scan the various documents without having to go back to your computer
> between them.
>
> Sadly, I haven't figured out how to do that yet :-(
There appear to be three aspects to solving this problem:
1. SANE detecting when a scanner button is pressed.
2. A button press being captured and known to the system.
3. Activation of a script.
I can see 3 being solvable but how about 1 and 2?
--
Brian.
[...]
> The option I favor is that the scan is controlled by your own computer,
> but you can trigger new scans by hitting buttons on the scanner
> (i.e. the button-presses get sent to your computer who then decides
> what action to take in response to them), so that you can comfortably
> setup the scan parameters on your computer and then you can comfortably
> scan the various documents without having to go back to your computer
> between them.
>
> Sadly, I haven't figured out how to do that yet :-(
1. SANE detecting when a scanner button is pressed.
2. A button press being captured and known to the system.
3. Activation of a script.
I can see 3 being solvable but how about 1 and 2?
--
Brian.
Charlie Gibbs
Apr 3, 2021, 1:20:04 PM4/3/21
to
On 2021-04-02 10:56 a.m., Charlie Gibbs wrote:
> Emboldened by this, I went into the advanced options
> and turned on "Continuous scan", then dropped in the
> first part of a 300-page manual. Once the sheets
> were scanned, the scanner asked me whether I had
> more; I put in the next bundle of sheets, said yes,
> and away it went. All was well until partway through
> the last set of pages - on about page 280 the scanner
> halted with an error message saying it had run out of
> space. A sheet was half-fed, the PDF file was incomplete
> and therefore corrupt, and a second file was created
> which contained garbage left over from a previously
> deleted file. That's not graceful - the least it
> could have done was closed off the file cleanly.
> The 2GB thumb drive was only 3% full. (Maybe the
> limit is internal to the scanner.) For now I'll
> assume a limit of 200 pages per file, and use
> pdfunite to put the pieces together in the computer.
I did some more experimenting with scanning this larger
manual (about 360 pages, it turns out). I re-formatted
that 2GB thumb drive and tried again; this time the
scanner fed the last sheet before coming up with
the error message. I forget the exact wording, but it
was pretty specific about the USB device being full,
as opposed to some sort of internal memory overflow.
(Apparently the scanner has 512MB of memory.)
Again I got a corrupt PDF file, plus a second file
which contained data which should have only existed
on my other computers - which makes me wonder about
data security.
I suspect that the scanner needs a _lot_ of extra
space on the USB device to build the PDF file.
I tried again with a freshly-formatted 16GB stick
and the entire document scanned successfully.
The finished PDF file is just short of 40 megabytes.
Toward the end of the scanning, the scanner was
pausing more and more frequently - it seems that
things don't scale too well beyond about 300 pages.
Still, it's turning out to be a nice little scanner
for offline use. If anyone has managed to do SFTP
from a Brother scanner, let me know how you did it.
I realize that this has turned into a review of the
scanner, but I've gotten so far into it that I might
as well see it through to the end. For now, connection
to a computer is merely something it would be nice to
have, rather than a necessity. The important part is
that I can use it to get my work done, one way or another.
--
cgi...@surfnaked.ca (Charlie Gibbs)
> Emboldened by this, I went into the advanced options
> and turned on "Continuous scan", then dropped in the
> first part of a 300-page manual. Once the sheets
> were scanned, the scanner asked me whether I had
> more; I put in the next bundle of sheets, said yes,
> and away it went. All was well until partway through
> the last set of pages - on about page 280 the scanner
> halted with an error message saying it had run out of
> space. A sheet was half-fed, the PDF file was incomplete
> and therefore corrupt, and a second file was created
> which contained garbage left over from a previously
> deleted file. That's not graceful - the least it
> could have done was closed off the file cleanly.
> The 2GB thumb drive was only 3% full. (Maybe the
> limit is internal to the scanner.) For now I'll
> assume a limit of 200 pages per file, and use
> pdfunite to put the pieces together in the computer.
I did some more experimenting with scanning this larger
manual (about 360 pages, it turns out). I re-formatted
that 2GB thumb drive and tried again; this time the
scanner fed the last sheet before coming up with
the error message. I forget the exact wording, but it
was pretty specific about the USB device being full,
as opposed to some sort of internal memory overflow.
(Apparently the scanner has 512MB of memory.)
Again I got a corrupt PDF file, plus a second file
which contained data which should have only existed
on my other computers - which makes me wonder about
data security.
I suspect that the scanner needs a _lot_ of extra
space on the USB device to build the PDF file.
I tried again with a freshly-formatted 16GB stick
and the entire document scanned successfully.
The finished PDF file is just short of 40 megabytes.
Toward the end of the scanning, the scanner was
pausing more and more frequently - it seems that
things don't scale too well beyond about 300 pages.
Still, it's turning out to be a nice little scanner
for offline use. If anyone has managed to do SFTP
from a Brother scanner, let me know how you did it.
I realize that this has turned into a review of the
scanner, but I've gotten so far into it that I might
as well see it through to the end. For now, connection
to a computer is merely something it would be nice to
have, rather than a necessity. The important part is
that I can use it to get my work done, one way or another.
--
cgi...@surfnaked.ca (Charlie Gibbs)
John Boxall
Apr 3, 2021, 2:30:04 PM4/3/21
to
On 2021-04-03 1:00 p.m., Charlie Gibbs wrote:
> On 2021-04-02 10:56 a.m., Charlie Gibbs wrote:
>
> the error message. I forget the exact wording, but it
> was pretty specific about the USB device being full,
> as opposed to some sort of internal memory overflow.
Charlie,
> On 2021-04-02 10:56 a.m., Charlie Gibbs wrote:
>
> the error message. I forget the exact wording, but it
> was pretty specific about the USB device being full,
> as opposed to some sort of internal memory overflow.
It is also a possibility that your USB thumb drive _doesn't_ have the
capacity that it says it does. There are a lot of "fake" USB thumb
drives that have far less capacity than advertised. Would you be able to
try an external hard drive connected via a USB adapter?
--
Regards,
John Boxall
Brian
Apr 3, 2021, 3:30:04 PM4/3/21
to
On Sat 03 Apr 2021 at 10:00:53 -0700, Charlie Gibbs wrote:
[...]
> I realize that this has turned into a review of the
> scanner, but I've gotten so far into it that I might
> as well see it through to the end. For now, connection
> to a computer is merely something it would be nice to
> have, rather than a necessity. The important part is
> that I can use it to get my work done, one way or another.
IMHO, you are heading off on a tangent.
In your first mail you said at the start of it:
> I just got a Brother ADS-2700W sheet-fed scanner and am trying
> to access it from xsane.
Then later on:
> But I'd really like to let xsane manage the process.
If you have changed your mind about xsane I can go back to slumbering.
OTOH, if that is still your objective, the information asked for may
be useful. I'll repeat the request:
> It would be useful to know the output of
> avahi-browse -rt _uscan._tcp
> and
> which Debian version is in use.
> avahi-browse is in the avahi-utils package.
Add 'scanimage -L' to the request.
--
Brian.
[...]
> I realize that this has turned into a review of the
> scanner, but I've gotten so far into it that I might
> as well see it through to the end. For now, connection
> to a computer is merely something it would be nice to
> have, rather than a necessity. The important part is
> that I can use it to get my work done, one way or another.
In your first mail you said at the start of it:
> I just got a Brother ADS-2700W sheet-fed scanner and am trying
> to access it from xsane.
> But I'd really like to let xsane manage the process.
OTOH, if that is still your objective, the information asked for may
be useful. I'll repeat the request:
> It would be useful to know the output of
> avahi-browse -rt _uscan._tcp
> and
> which Debian version is in use.
Add 'scanimage -L' to the request.
--
Brian.
Charlie Gibbs
Apr 3, 2021, 8:20:04 PM4/3/21
to
successfully. The PDF is just shy of 40MB for 360 pages. The
scanner was hiccuping a lot toward the end, though - I suspect
that its algorithms don't scale up nicely beyond 300 pages or so.
That's not a disaster - I can always scan smaller chunks (say,
200 pages) and put them together with pdfunite.
--
cgi...@surfnaked.ca (Charlie Gibbs)
Stefan Monnier
Apr 3, 2021, 11:50:06 PM4/3/21
to
> I tried a freshly-formatted 16GB stick, and the document scanned
> successfully. The PDF is just shy of 40MB for 360 pages. The
Most likely the document is first scanned to a set of separate
> successfully. The PDF is just shy of 40MB for 360 pages. The
uncompressed pages (maybe kept in separate files) and only converted to
a PDF at the end, hence the need for a lot of extra space.
Stefan
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