Greg Williamson 1:57am, 13 March 2011
The glass on my V700 has gradually been accumulating a film of mould or something (I live in the wet tropics) and I have been very nervous about dismantling it for cleaning. There is another thread with links to technical diagrams and tutorials on removing the top of Epson scanners but none of that info relates directly to the V700.

Well - I just did it and it was easy! Here's how -

Remove the power cable and the cable to the lid.
Remove the lid - open it and it just pulls up and off.
Now - there are 4 screws with little plugs over them.
A very sharp little screwdriver (like the one in a Leatherman tool) can prise up the plugs.
Then a smallish Phillips head screwdriver for the 4 screws.
The top of the scanner now pretty much lifts off. There is a small catch in the front.
Voila - the underside of the glass is ready to clean.
I used 100% ethanol and optical tissues, followed by a polish with a lens cloth and a bit of a puff from a blower.

Lid goes on again easy. I was tempted not to even screw it back for easy cleaning, but I suppose it can do without another clean for another year at least.

I cleaned the top of the glass and now it looks like a diamond! I feel like getting out all the transparencies I scanned in the last month and doing them again!
Felip1 8 years ago
My climate's not quite as humid as yours, but I've been noticing a little haze on the underside of mine, too. Thanks for your directions.
Michael Costolo 8 years ago
Been thinking of doing this too. Thanks for the instructions.
inetjoker 8 years ago
A lot of that is out gassing of the plastic inside. Thanks for the quick instructions I don't have a problem now but the future is always closer than you think. :)
(mjh) Posted 8 years ago. Edited by (mjh) (member) 8 years ago
Just be careful to do it in a dust-free (and dry) place or you may end up in worse shape than before you started.
Greg Williamson 8 years ago
I only cleaned the glass on the bed of the scanner.

I checked the glass in the lid - but it is clean. Have not tried to take it out yet.

It is very humid here. Hell on lenses....
Bob ♫ 8 years ago
Thank you indeed for posting this! It's just a *little* damp here in North Yorkshire as well, so I will probably encounter the same thing at some point. Cheers.
inetjoker 8 years ago
In Arizona it was dust here in Tennessee it could be moisture related but the thing is I live climate controlled building so I am pretty lucky here.
scanzzz 8 years ago
If your scanner is still under warranty, use duct tape pressed on to the caps and then a quick rip-off motion to remove them. This usually works and doesn't leave markings which Epson would use to declare your warranty invalid ;)
Bob ♫ 8 years ago
Genius, thanks.
Greg Williamson 8 years ago
Good idea. The plugs on mine were very well scrunched in though. I doubt they would have come out with duct tape. No problem though - my scanner is >3 years old now.
s.kunstadt 8 years ago
I've also done this a few months ago - I think the out-gassing theory is most likely (it had been in a hot room all summer).
It was very easy to clean the glass on the bed, and its now clean and clear. The tape for removing the plugs worked great for me.
fsixteen rule 6 years ago
just done this too with a large micro fiber cloth and alcohol mist spray . used tape to take off the covers as well. warranty now well expired but wouldn't want to hurt the resale value, if it ever comes to that.

hopefully it wont need doing again for a long time if its just the plastic out gassing? another theory might be a small amount of excess lubrication somewhere which might have vapourised and settled back on the glass? it first developed in the first year and hasn't got worse in the last three years so whatever the origin i would imagine it will remain clear for another few years.
Wayne Stevenson 6 years ago
I assume the top platen is just as easily cleaned?
dizzy_chicken 6 years ago
The top is just for your illumination lamp. I doubt cleaning it will have much of an impact on your scans.
Wayne Stevenson 6 years ago
Heh. I suppose you're right. Didn't really give it any thought beyond it being another piece of glass. ;)
Gordon Wood 6 years ago
I've noticed a greasy rippled film on the underside of my V700's glass since I've owned it. I suspect it never got cleaned properly at the factory. My film scans have always been disappointing in the sense that they always look a little soft (like halation), regardless of scan resolution. Mostly this is objectionable on medium format, but even 4x5's look soft at 100%. When I saw this thread, it gave me confidence to try to clean it, because I'd always suspected that the crud on the underside caused this softness.

I've now cleaned it, but alas, the softness is still there, even though the glass is dramatically cleaner. I know that we can't expect a flatbed to perform like a true film scanner, but I must say that it has been a disappointment, particularly with 4x5's.

By the way, the duct tape was a great idea for removing the screw covers (except for one stubborn little bugger). I found the best way to check that I'd gotten all the grease and dust off the glass was to lay out some black velvet on the table in front of me, then tilt the glass in front of me until all was revealed.

Gordon
fsixteen rule 6 years ago
are you setting the feet at the right height? default is 0, but you have to fit them yourself, they arrive without the feet in place, so set at -1.. you probably knew this but it worked wonders for most of my scans.

settings are:
Feet off, -1
Feet on and pointing to 0, 0 (usually best)
Feet on and pointing to +1, +1

There are some fairly pricey aftermarket holders which do a much better job, also some wet mounting kits, but neither appealed to me. If I ever need to do an exhibition I'll have the films sent for a proper scan. I find the v700 fine for up to 12 inch prints, and better with medium format.
Gordon Wood 6 years ago
I purchased the aftermarket medium format holder from betterscanning.com and have carefully experimented with different heights. Even with the film nice and flat, the result is the same as with the Epson holder.

Perhaps it's the luck of the draw and I got one with a bad or dirty lens, or perhaps I have high expectations. However, Alamy seems to agree with me, because their QC rejects anything I scan on the V700 as 'soft or lacking definition'.
Gordon Wood 6 years ago
Here's an example of a 'soft' medium format scan at 100%:
Medium format slide scanned on V700 by Gordon Wood
ddandan 6 years ago
Just to be certain, the film itself looks much sharper through a magnifying glass?

And you add a touch of sharpening to the scan file?
Gordon Wood 6 years ago
To be fair, I don't have a magnifying lens that will allow me to examine the transparency at the same size as the 100% view. However, looking at it on the light table with the loupe, the edges on the pillars definitely look sharper than the scan.

I've also compared a 4x5 neg with its scan at 50% and 100%, and under the loupe it appears sharper. Perhaps I'll put it on the enlarger sometime and use the enlarging scope to compare. That will allow me to see down to the grain.

That said, this softness seems to be camera- and format-independent, so neither the lenses nor the carriers would appear to play a part in this. I've adjusted heights six ways to Sunday with the same softness results. By the way, I do not use sharpening at the scanning phase, but this shot may have been made with Digital Ice enabled. On my Nikon 4000, my 35mm slides don't seem to suffer from noticeable softening when using DI, so I wouldn't expect it to be the culprit here.

I would love to see examples at 100% from other group members. It would be good to compare with my example above to see if I'm just fussy or if this is the limit of the machine. Again - I would expect a true film scanner to do a better job. If anyone has such a beast, could they please post examples at 100% as well?

By the way, this shot was from a Mamiya M645 with 80mm lens.
fsixteen rule 6 years ago
i can see that the light areas seem to be affect the dark, and if you hadn't said otherwise you might have thought that might be due to a hazy glass plate. I think it might be quite a tricky test for many scanners, in some ways though that example seems a little over cooked (as there is no detail in the posts), either the original or the scan, perhaps pulling the scan back one might ease the pressure on the darker areas too. I can't think that ICE would affect the exposure either, as that just takes in IR info from the surface and clones out any dust particles. Have you tried a direct scan for scan with the nikon 4000?
Gordon Wood 6 years ago
I'll do a scan for scan with a 35 mm slide on the Nikon 4000 and the V700 and post the results a little later. I decided not to use the V700 for 35mm though, because the results looked horrible, despite fiddling with holder height. But we'll do the experiment.
Gordon Wood 6 years ago
Here are scans at 100% of a mounted 35mm slide on the Nikon 4000 ED with Digital Ice on
Nikon-4000_DI by Gordon Wood
compared with the V700 with Digital Ice on and the mounted slide holder set to the greatest height (spacers set to +).
V700_DI_4800_+ by Gordon Wood
I must admit the V700 scans weren't as bad as I expected, but are still noticeably softer than the Nikon scan.

I also found that the V700 doesn't work as well with Digital Ice as the Nikon 4000. You can see the artifact it creates in the circled areas
V700_DI_Artifacts by Gordon Wood
compared with the Nikon, which is clean
Nikon-4000_No DI_Artifactsjpg by Gordon Wood
. I hope these differences show up in this post. They certainly show up on the computer. Interestingly, on the mounted slide holder, the height settings (between O and +) made little or no difference to sharpness.

While 35mm may be the most brutal basis for comparison, it shows why my medium format and 4x5 scans are a little on the soft side.
inetjoker 6 years ago
Good to see nothing a little post can't clean...
ddandan Posted 6 years ago. Edited by ddandan (member) 6 years ago
To be certain (again) the negative holder has an opening along the top edge like the stock holders? I wonder if for some reason your scanner is using the standard lens, not the high-resolution scan for film scanning?

And the Nikon- looks like a bit of sharpening applied? Not certain how the Nikon defaults. The Epson V700 and the Nikon shouldn't be that far apart from what I have seen on various web sites.
Gordon Wood 6 years ago
This 35mm mounted slide holder (used for the comparison above) is the stock holder from Epson. It is my medium format holder that is aftermarket, and it has the correct opening.

No sharpening was applied to the Nikon scan. Digital Ice was the only option I had switched on. I think this is the reason we pay more for true film scanners - the image is definitely better as you can see down to the grain. The grain is barely perceptible on the flatbed.

Oh well - the V700 makes a great document scanner!
fsixteen rule 6 years ago
great comparison, and to be fair the 4000 ed is an amazing scanner, but i don't think the v700 has done so bad. i think with some detail retention settings it might do a little better. that said i think you can seen a chromatic shift in the v700 close up. it may be that your scanner is a little out of spec/faulty, does it auto calibrate before scanning? it might improve with multiple pass.. the ice seems to be working fine, isn't that what its supposed to do? what i do find though is the v700 seems to be a magnet for dust when scanning. am thinking about setting some foam strips around the edges to stop it getting in while its going. thanks again, this is a good comparison. its good but never going to beat the 4000ed though.
Gordon Wood 6 years ago
Actually, DI is supposed to remove the surface crud without replacing it with artifact. The 4000 does that very well, but for some reason, the Epson software doesn't seem to integrate with DI properly. I think it's strictly a software thing. Hence, the wonky pixels it tries to replace the dust with.

I don't know if the V700 auto-calibrates. If it does, it must do it during startup. As for multi-pass, some time ago I tried Vuescan (?) because it supposedly allows it, but if I remember right, I couldn't get it to work. Admittedly, that's one advantage the 4000 has over the V700. From posts I've seen, most seem to recommend sticking with Epson Scan software, though.

This was a good exercise to go through, and I agree that the V700 does a good job for a flatbed. I am disappointed, however, that it does a less than stellar job even on 4x5s. I have the impression that the V700 is lacking in dynamic range (Dmax) because highlights seem to blow out easily. Another parameter that true film scanners excel in.

I would still like to see medium format or 4x5 scans at 100% from other V700 users posted here. That would help me determine whether or not I got a dud.

Thanks for your comments!
NoahPete 6 years ago
FWIW, I gave up on Digital Ice on the Epson because one little spot could obliterate a whole scan. A fine scratch or dust is easier to spot out than to wonder (after some serious tests) how much the scans were getting ruined. I also ran it with a density standard and it is no way a Dmax of 4.

Resolution and clarity wise I would rate the scanner pretty well and I suspect, Gordon, that your scan with the plant and posts is either soft in the image or something isn't quite right in the scanner. It looks like chromatic aberration from the original, or the CCD colors are shifted slightly, or something in the scanning optics path is fogged.

I posted a crop of a resolution chart taken with a 500CM with a 150mm lens at f8 with PanF 120. I know all lines are resolved in the negative, but the scanner fails to resolve the highest resolution blocks when it is below about 3 pixels per feature size.

panf_1_15_crop by NoahPete


Here is a color example with Ektar, you can see the grain but there isn't the magenta/yellow fringing in any scans I have made that looks like yours. Notice the pyramid still has some pretty fine detail on the structure and the diffraction lines on some of the lights are still pretty clear and fine.

ektar_2_3_crop by NoahPete


One final note, I have done a depth of field check on the scanner and it is surprisingly deep. So if there are issues I might suspect the CCD or optics are fogged with offgassing residues before thinking your negatives or slides are at the wrong height or curled.

BTW I use a V750M but I don't think that causes any great change in the expected results.
Mata Telinga 5 years ago
As a reply to the initial post by Greg Williamson I just want to express my thankfulness - really useful instructions. I live in the rainforest now and I discovered that quite some mold hat built up on the inside of the scanner. Following his instruction made the cleanup a snap.
One more thing: To avoid the build-up of fungus etc one may recall that fungus dies under UV light. Like lenses, putting the scanner for a short moment open in the midday sun (at 1ºNorth here the sun shines then from the zenith) should kill it. Perhaps a thing to do once a month.
splashrefresh 5 years ago
Can you tell me if the glass is attached to the plastic when you lift the top portion of the scanner up and out? I hope I can just remove the top portion of the scanner and the glass will remain attached to the scanner. I want to see if I can have a custom plastic piece built so the bed of the scanner will be flush with the glass. If the glass is attached to the plastic when you life the top portion up and out, can the glass pop out? Thanks so much!!!
Wayne Stevenson 5 years ago
Not sure I am completely understanding you. But changing the distance that the film sits, will keep your film out of the focal flange and your scans will all be out of focus.
scanzzz 5 years ago
The glass is attached to the top half of the shell of the scanner. Older scanners have the glass attached via sticky foam and clips. Newer scanners usually just have a system of clips in my experience but there could be some variability. There is some helpful dismantling information at the following link:

www.betterscanning.com/scanning/dismantling.html

Wayne's advice is spot-on regarding the focus issue you will get if you do the modification you suggest.
AndràsV- 5 years ago
Thanks Greg! It improved my scans dramatically. I don't get stripes anymore :)
glennbphoto 5 months ago
Thanks for very helpful instructions! I was finally able to clear away the scum on the underside of the glass!
I was having trouble removing the screw cover caps, until I consulted this very helpful page: dd-b.net/ddbcms/2017/07/cleaning-epson-v700-flatbed-scann...
devb. 5 months ago
glennbphoto:

That is helpful... I mangled mine so badly I just threw them away.
Groups Beta