CanonimageFORMULA R40 - Office Document Scanner, Windows and Mac, Duplex Scanning, Easy Setup, Scans a Wide Variety of Documents, Scans to Cloud

My old laptop died that I used to use this scanner on with no issues (I think it was originally Windows 7 that was upgraded to Windows 10). My new desktop has Windows 11 and each time I want to use the scanner, I have to re-install the TWAIN software to get the scanner to work as the software 'forgets' what scanner is attached to the computer. After I finish using the scanner and some unknown amount of time passes, the software 'forgets' again what scanner it is connected so and I have to re-install the software the next time I want to use it. Totally unacceptable and no workaround seems to be available from Canon other than to keep reinstalling the software each time I want to use the scanner. I would have returned the scanner if this has happened from the word go.Put the rating back up to 5 star after I deleted the Canon scanner software on my computer and re-installed it completely. Voila, no more losing the connection between the software and the scanner. Yeah, for all the years I've been using computers, I should have thought of removing and re-installing the software. With that issue gone, it's a really nice scanner especially for scanning significant numbers of pages.I was looking for a printer so I could put several boxes of old engineering paperwork into electronic format.So far, I've been really impressed with the R40. I can scan with my current printer but it's sloooooow, noisy and less than stellar quality. Definitely not a candidate for what I wanted to do.Setup was easy. You have to download the software which is 525 Mb. I missed the note on the download page directing US customers to an download link. My download speeds weren't great but it did come down. Installation went with no problem.Pros1. Fast. The first time I ran about 4 or 5 pages through it, the scanner was set on 200 dpi greyscale and the pages just whipped through the feeder. I thought both sides could not have scanned but everything was there. Even on 300 dpi color it's pretty fast (max is 600 dpi). Compared to the scanner built into my printer, it's another whole other level of speed. I can't prep the next batch in time to keep up with the scanner.2. The scanner says it will rotate pages into the correct orientation and overall it does a really good job. I finally found the section in the scanner software that allowed me to rotate a page that scanned in the wrong orientation (having it worked into a right mouse click with some other options would be useful Canon). I want to do some more testing but a couple of tests I did with flipping some pages or putting all the pages in upside down had them all come up in the right orientation (as mentioned, I had some early problems with some scans but that doesn't seem to be an issue now).3. Handles flimsy magazine paper with no real problems. Ragged edges don't appear to be a problem but any amount of glue from the backing left on the pages and they don't feed properly causing a jam. Any amount of glue is bad. If you run your fingers down the edge and can feel bumps, remove it, trim the edges, whatever. If you can see a flat line of glue, trim it off. Sometimes it will feed, sometimes it won't.4. Compact, nice small size. With the document feeder installed and extended as well as the output tray, it's about 12" high by 15" deep by 11" wide. Remove the feeder the retract the tray and the dimensions are about 7.5" high by 6.5" deep by 11" wide.5. All necessary cables are provided. Small point maybe but there's nothing more annoying than getting a new toy and finding out you need to go out for a cable. While many of use have boxes of old cables, that doesn't mean we will have the right one.6. Return shipping is included if I need to return it or don't like it, I don't think that's going to be an issue. Return shipping can be a nasty surprise.7. The power supply handles 100V to 240V, doubt I will take it on a trip overseas but it's a nice feature to have.Cons:1. The software version of the manual is useless. I had pages that were upside down and do you think 'rotate' or 'rotate pages' came up with useful information? If you said yes, you be wrong.2. I finally figured out how to scan and then get the file written to my hard drive by setting up a one-touch button. Before that, sometimes when I hit 'finish', the file would write to my hard drive, other times it would not or I had no clue where it went to. Drove me crazy at first and really slowed down the overall speed.3. Does an okay job on pictures but if I was going to scan a lot of pictures, this would not be the scanner I would pick. I didn't take anything off my rating as that was not my purpose in buying this scanner but I'll note it.2023 commentLast point I'll add is when we came back from a 6 month cruise I decided to save all the daily cruise reports just in case I wanted to go back some time and see what we did on some day. It didn't take very long to scan that many pages, even less when I changed from full color to greyscale which was more than adequate for what I wanted. Full color looks good but does make some big files though that's not much of an issue given the multi Tb hard drives that you can get now.

This item was a life saver. I work from home and have tons of documents that I need to save on our work server. I bought this scanner due to the reasonable price and small size ( I live in an apartment and already have a pretty big printer). I was skeptical. But once installed and ready to go, it worked like a charm. I typically have about 4 batches a day. Each batch can have anywhere from 3 to 200 pages. And I had a months worth of batches by the time I got around to buying this. I got caught up in no time. The software is user friendly. The only thing that was different from the industrial size one in the office is you have separate any batch over 50 sheets. But the software is so easy it makes this a cinch. You just scan the first group, put in the next and click Continue. Rinse and repeat until done. The groups are automatically combined into one pdf and saved to wherever you have them being saved. I would NOT suggest using the 600 dpi as it is slow as hell. I set mine at 300 dpi and it is great for my purposes. Not the best picture quality but definitely good enough. I'd share a picture but my documents are finance related. I'd be fired. LOLSo in the end, the only test left is longevity. I will post an update if this thing craps out on me prematurely. Fingers crossed.

I'M VERY UNSATISFIED WITH THIS PRODUCT. I REALL Y EXPECTED A BETTER PRODUCT FROM CANON.I bought the scanner because I needed legal-sized scanning and it, also, offered duplex scanner 2-sided scanning.This product was originslly designed and manufacured around 2015-1017 according to what little info I could find. The drivers and software were designed for windows 10, and the last drivers and software update was in 2019 according to what I could find online on the Canon site.I am using Windows 11 24H2. I originally had difficulty installing the software, and having Windows 11 recognize the scanner. The scanner would seem to be installed and show up in the devices tab, but would not perform a scan.Eventually after several de-installations and re=installations, I managed to get the scanner and software to perform a scan.However, in subsequent scans after not performing any scans for weeks, the issue repeated itself and evenuinstalling and reinstalling has left the scanner totally useless and just takes up office space. I researched the issue on Canon suport site, and found that this issue is a CHRONIC PROBLEM with this product.This week, I checked with Amazon, and discovered that it was too late for a return as defective equipment. This is my bad, not Amazon's, so, totally on me.Today, I re-boxed the scanner and will try to donate it to someone still using Windows 10 or a Apple iOS. More than likely, I will have just trash or find some way to recycle.This Canon CanoScan Lide 400 Slim Scanner, 7.7" x 14.5" x 0.4" has since been replaced with a product from another reliable company.In closing, IF you buy this Canon Product and experience ti issues I have documented, DON'T WAIT AND RETURN IT FOR A REFUND. Save yourself the grief and expense of experiencing these issues that I have documented and that has been documented by other NEW users of tthe product.

This is an outstanding scanner. Both for color and black and white. Yes it does scan 40 pages per minute when set at 200 dpi for documents in color and black and white. It does things I could never have imagined. You can mix and stack different size pages... it will handle it. It will even scan in business cards through the feeder. It will straighten documents, scan single and double sided. The OCR Readiris software that comes with it is good. I upgraded it to an even better version for a small cost. No trouble to install on my Windows desktop and notebook computers. Highly recommended!