I've had my Canon DR-2080C scanner about three years, and now
I'm looking for help with a minor problem it's developed:
Its spatial calibration (pixels per inch) is inaccurate in the
direction of paper movement. This condition has come on gradually
over the three years I've had it.
For example, if I set it to scan a document 11" tall (U.S. letter
size paper) at 300 pixels per inch, then it scans 3300 rows of
pixels as expected, but my document is squeezed into the first 3240
of them, and the last 60 are black. If I put in a longer paper,
it actually scans about 11.2" of paper to get those 3300 rows of
pixels. The paper moves about 2% too far during the scanning time,
so my requested 300 pixels per inch is really more like about 294.
When I ask for 300 pixels per inch, that is what I want my scanner
to deliver. Is that too much to ask?
My scanner is out of warranty and Canon's only suggestion is "take
it to one of our authorized dealers." Before I invest hundreds of
dollars in that, I wanted to ask whether anyone has any suggestions
I could try at home. There must be an adjustment for it somewhere!
Any suggestions would be appreciated. Thanks in advance.
"Rich Pasco" <richp1234@hotmail.com> wrote in message
news:b-KdnRq97u9tiz7VnZ2dnUVZ_vadnZ2d@comcast.com...
> I've had my Canon DR-2080C scanner about three years, and now
> I'm looking for help with a minor problem it's developed:
>
> Its spatial calibration (pixels per inch) is inaccurate in the
> direction of paper movement. This condition has come on gradually
> over the three years I've had it.
>
> For example, if I set it to scan a document 11" tall (U.S. letter
> size paper) at 300 pixels per inch, then it scans 3300 rows of
> pixels as expected, but my document is squeezed into the first 3240
> of them, and the last 60 are black. If I put in a longer paper,
> it actually scans about 11.2" of paper to get those 3300 rows of
> pixels. The paper moves about 2% too far during the scanning time,
> so my requested 300 pixels per inch is really more like about 294.
>
> When I ask for 300 pixels per inch, that is what I want my scanner
> to deliver. Is that too much to ask?
>
> My scanner is out of warranty and Canon's only suggestion is "take
> it to one of our authorized dealers." Before I invest hundreds of
> dollars in that, I wanted to ask whether anyone has any suggestions
> I could try at home. There must be an adjustment for it somewhere!
>
> Any suggestions would be appreciated. Thanks in advance.
>
> - Rich
If I were to guess as to the cause, I think the rail that the scanner head
travels on is probably dry and needs cleaning and a light application of
light machine oil. (3-in-one)
> If I were to guess as to the cause, I think the rail that the scanner head
> travels on is probably dry and needs cleaning and a light application of
> light machine oil. (3-in-one)
If I were guess, you don't know anything about the Canon DR-2080C.
It has no rails whatsoever, and the scanner head doesn't move at all.
It's a sheet-fed scanner, where the paper moves past a fixed contact
image sensor.
But heck, if you didn't know that much about it, you certainly don't
know how to fix it.
For the other equally uninformed readers, here are some pictures:
"Rich Pasco" <richp1234@hotmail.com> wrote in message
news:RqidnWPjq6ZY2T7VnZ2dnUVZ_ofinZ2d@comcast.com. ..
> CSM1 wrote:
>
>> If I were to guess as to the cause, I think the rail that the scanner
>> head
>> travels on is probably dry and needs cleaning and a light application of
>> light machine oil. (3-in-one)
>
> If I were guess, you don't know anything about the Canon DR-2080C.
> It has no rails whatsoever, and the scanner head doesn't move at all.
>
> It's a sheet-fed scanner, where the paper moves past a fixed contact
> image sensor.
>
> But heck, if you didn't know that much about it, you certainly don't
> know how to fix it.
>
> For the other equally uninformed readers, here are some pictures:
>
> http://www.superwarehouse.com/Canon_...2A002/p/120659
> http://www.amazon.com/Canon-DR-2080C.../dp/B00006L4XD
> http://www.scannersolutions.com/stor...&idproduct=279
>
> - Rich
You are correct I do not know that much about the DR 2080C.
As I said, I if I had a GUESS, I would think the rails need a cleaning and
oiling, that is the way most flatbed scanners work, you put the paper on a
glass surface and the scanner head moves under the paper on a rail.
If the rail is dry the scanner head does not move smoothly.
The same would apply to the rollers on a document feeder, if the rubber is
dry, the paper may slip.
The fix might be replacing the rollers, in which case you do not have the
parts or the service manual.
> You are correct I do not know that much about the DR 2080C.
>
> As I said, I if I had a GUESS, I would think the rails need a cleaning and
> oiling, that is the way most flatbed scanners work, you put the paper on a
> glass surface and the scanner head moves under the paper on a rail.
>
> If the rail is dry the scanner head does not move smoothly.
>
> The same would apply to the rollers on a document feeder, if the rubber is
> dry, the paper may slip.
> The fix might be replacing the rollers, in which case you do not have the
> parts or the service manual.
Carl, I get your intention to be helpful, but since you have no
knowledge of the Canon DR-2080C you are wasting your time and mine by
guessing. You keep talking about a flatbed scanner, with rails and a
moving head. The Canon DR-2080C is none of those!
I can reassure you that its rollers are not slipping against the paper!
If they were, it would have the opposite effect I described. Slipping
rollers would make the paper move too slowly, so the image would be
stretched beyond the requisite number of pixels. My problem is that the
paper moves too quickly for the scan rate, so it passes completely
through the scanner before the requisite number of rows of pixels have
been collected. Go back and re-read my first post, and think about it.
I wish Canon published a technical service manual for the DR-2080C but
they do not.
"Rich Pasco" <richp1234@hotmail.com> wrote in message
news:sI2dneVKsuF-Lz7VnZ2dnUVZ_r7inZ2d@comcast.com...
> CSM1 wrote:
>
>> You are correct I do not know that much about the DR 2080C.
>>
>> As I said, I if I had a GUESS, I would think the rails need a cleaning
>> and
>> oiling, that is the way most flatbed scanners work, you put the paper on
>> a
>> glass surface and the scanner head moves under the paper on a rail.
>>
>> If the rail is dry the scanner head does not move smoothly.
>>
>> The same would apply to the rollers on a document feeder, if the rubber
>> is
>> dry, the paper may slip.
>> The fix might be replacing the rollers, in which case you do not have the
>> parts or the service manual.
>
> Carl, I get your intention to be helpful, but since you have no
> knowledge of the Canon DR-2080C you are wasting your time and mine by
> guessing. You keep talking about a flatbed scanner, with rails and a
> moving head. The Canon DR-2080C is none of those!
>
> I can reassure you that its rollers are not slipping against the paper!
> If they were, it would have the opposite effect I described. Slipping
> rollers would make the paper move too slowly, so the image would be
> stretched beyond the requisite number of pixels. My problem is that the
> paper moves too quickly for the scan rate, so it passes completely
> through the scanner before the requisite number of rows of pixels have
> been collected. Go back and re-read my first post, and think about it.
>
> I wish Canon published a technical service manual for the DR-2080C but
> they do not.
>
> - Rich
Oh, I bet Canon has a technical service Manual for the DR-2080C, they just
will not sell the manual unless you are a authorized service station.
Have you searched the internet for a "Canon DR 2080 service manual" without
quotes?
Google is a good search engine.
> Oh, I bet Canon has a technical service Manual for the DR-2080C, they just
> will not sell the manual unless you are a authorized service station.
>
> Have you searched the internet for a "Canon DR 2080 service manual" without
> quotes?
> Google is a good search engine.
>
> You never know what might turn up.
>
> This should be what you are looking for:
> http://www.manualuniverse.com/manage.../catalogue.asp
>
> Put in Canon, DR 2080
>
> Then Click on the DR 2080 that comes on the page.
> You can buy a service manual for $18.99.
>
> I can't give a direct link because this site does not allow.
>
> After you buy the Manual and it is the service manual you want, don't forget
> to post a "Thank You CSM1"
>
>
> You may think it is a waste of time, but I know a few things you don't.
>
> Just because I have not worked on a Canon DR 2080, does not mean I don't
> know about servicing Scanners.
>
> I was in the Electronic Service repair business for about 30 years.
> In that 30 years I have seen a lot of strange things happen.
>
> Electronic equipment will do things that theory says, "It can't do".
>
> If you have been to my web site, you would see all the service information I
> have about some Canon Scanners. The DR 2080 is not one of them.
Yes, I did put "Canon DR-2080C" into Google, and found places selling
the scanner and reviews of it, but no service manual. Good idea adding
"service manual" to the Google search.
Although I think $18.99 is a little pricey to download a file they
probably got for free, I paid http://www.manualuniverse.com/ the $18.99
(my PayPal account was charged instantly). Also instantly I got an
e-mail telling me "You will soon receive a link to download the manual
you bought." However, it didn't say how soon. Now over 25 minutes, no
such link. I wonder whether it's waiting for a human being to log in
and do something manually, or their server is that slow. And yes, I
did check my spam filter.
Well, my invoice came "From: sales@manualuniverse.com" but when
I replied to check on the status of my order, it bounced with:
"This user doesn't have a manualuniverse.com account."
I'm wondering whether Manual Universe is a scam, or just poorly
configured.
"Rich Pasco" <richp1234@hotmail.com> wrote in message
news:LNidndQKJtSNrzjVnZ2dnUVZ_qzinZ2d@comcast.com. ..
> Rich Pasco wrote:
>
>> I'll let you know if anything changes.
>
> Well, my invoice came "From: sales@manualuniverse.com" but when
> I replied to check on the status of my order, it bounced with:
> "This user doesn't have a manualuniverse.com account."
> I'm wondering whether Manual Universe is a scam, or just poorly
> configured.
>
> Stay tuned for the next exciting episode....
>
> - Rich
I hope you are not scammed, I have never tried them.
If you have a Spam filter, check it for a trapped email.
> I hope you are not scammed, I have never tried them.
> If you have a Spam filter, check it for a trapped email.
I was watching my spam folder regularly. :-)
I got my download link, nine hours and ten minutes after my purchase.
Their home page says "Remember, your manual is just a click away, since
we deliver it within minutes of your purchase!" That's true, since they
didn't say how many minutes. In my case, 550 minutes to be exact.
Next question: The manual says, "To execute the service mode, install
the software for the service mode, which is stored in the packaged setup
disk in the personal computer for service use that the service personnel
bring...." -- Canon DR-2080C Service Manual, page 5-3 (page 77 of 96 in
file Dr2080c_SVM.pdf).
Any idea where I can get this service setup disk? It wasn't listed at
Manual Universe under DR-2080C.
I'm afraid that without the referenced software, the instructions on how
to use it are pretty much useless. :-(
Canon DR-2080C 
Linear Mode
