DS-640 Compact Mobile Document Scanner, (Model: DS640) 1.5"x2"x11.9"

A good little scanner. It’s portable and efficient. It scans effectively. The software is easy to install and easy to use.

This little dude is super compact, does exactly what it says, and is perfect for scanning documents or receipts for your records. I’ve been juggling a ton of legal and medical paperwork while traveling constantly, and this thing has made it so much easier. Honestly, it’s better than the big, clunky all-in-one printer/scanners back at my office. The Brother software is surprisingly decent too—clean interface, no fuss. And unlike the compact Epson scanners I’ve tried, this one actually works. It’s earned a permanent spot on my desk at home.

I purchased this scanner about 2 and a half years ago and it continues to work flawlessly... This is impressive as I admittedly purchased this portable on-the-go scanner for a very different task - to digitize all the documents in my filing cabinet from the last 30 years. The initial wave included around 5000 documents soooo no question it has paid itself off. To be honest, at this point, there isn't much I haven't tried feeding through this thing - credit cards, sparkly greeting cards, supplement cardboard box packaging, etc. so I'm continually impressed it hasn't broken. When theres an issue (feeding documents too quickly, a paper jam, etc) the indicator light blinks red and, as far as I know, to remedy this you lift the top portion and close it... I've had to do this many times (which is not to say it malfunctions often) but each time it sounds/feels like the act alone should break the thing. The only bummer to me is the scanning length limitation. While the width limitation is a given due to the physical dimensions of the scanner, the documents are fed through and each individual scan is limited to around 14". That is, it stops feeding through at a certain point and if the item hasn't cleared, you get the red indicator light and the image isn't processed. Other things I like: + the cord is detachable + I was able to download and operate the supporting software on my dinosaur 2011 mac air + the software has a continuous feed feature to scan multiple documents in a row (without having to interact with the software between pages)

So, let's start this off by saying one this -- Yes! The DS-640 is a great scanner... HOWEVER.. It does have some issues that bring it down a peg or two.. I'll start this off by highlighting the positives -- It's portable. It's easy to use. It's lightweight. On the downside -- It's infuriating after scanning only a few documents that you're told "OH NO! We're out of memory!" .. The first time it happened I stared at the message on-screen and thought to myself.. How the heck can it be out of memory when I have 64 GB of high-speed RAM in the computer... Then I remembered that the chips inside these scanners have temporary memory built-in... but then the kicker... ...buuut I only scanned TWO PAGES... They were 3 color (black, blue, red) documents and standard paper size. It's not like it was a full-size poster in crisp detail at maximum resolution, bitrate, with edits... This was a major failure of the design, and was actually my first experience with the scanner, which as I don't need to mention, is NOT GOOD! A terrible look for the BRAND, as this was my first ownership of their brand's product, and not good for the future of this little new device sitting on my desk with the threat of return, due to a degraded trust in the product. If it's going to fail me on day one, what's it going to do on day 365? That brings me on to my next quarrel with this device. Resolution and color limitations by size. If I want to scan a sheet of paper at the fullest-size available for this device in the MAXIMUM allowed quality (resolution and color and bitrate), why am I limited from doing so by software? We physically know the scanner can do it, because we can do it with other smaller sheets and the compliance with the HARDWARE is there... but for some reason, I get rejected by software when I want to actually use the product to its fullest potential, hardware wise. With auto document sizing set to "On" you can only scan stuff at a resolution of 300x300 dpi, regardless of being set to black and white or full 24-bit color. The device does have a slider to control a guide for paper size, but it's so flimsy and loose in the track that even if a document does start to kink to one side, it's pushing that guide out of the way. No sense in even having it there, really. The port on this scanner is not a generic connection, and requires a dedicated special cable to hookup to your PC by USB, so don't expect to be able to head down to your local PC repair shop and snag a new cable after your pet gerbil decided that the big thick black cable looked like a delicious after-dinner licorice dessert. With all this in mind, choose carefully. If you're using this to scan documents in an office setting, it's fine, I guess. Just be ready to scan that 43-page packet 5 times over until the software quits telling you that it magically ran out of memory. If you're using this to scan photos, whip out the old handy-dandy ruler and be ready to fight with size-presets telling you that you can't use the fullest scan quality on auto-sizing. As the package says -- Be sure to save your box and packing materials, in case you do ever need to send the unit back in for service or repairs. I recommend buying a wet/dry scanner cleaning kit.

Love. This product is great on the go or at home. Easy to set up and use. Great quality.

Bought this for receipt scanning Dec-2025. I read some reviews complaining about document jam errors. I thought it can't be that bad. Yes, it is that bad. It is 1-star bad. I'm shocked that I'm giving a 1-star review on such a well-reviewed item, and I've always had good impressions of Brother printers in the past. I don't usually go scorched earth in reviews, but you had one primary job to do with this thing. If it can't pull a receipt through the machine without throwing an error, what good is it? Did I just get a faulty scanner? If so, how many of these things are faulty? Is there a quality control issue with this model? There are so many printers and scanners in the world that do not have a document jamming flaw like this. I repeatedly tried many different receipts of different lengths and conditions, and I was successful with only a few of them. This is AFTER firmware and software updates. If the receipt is longer than 5-6 inches, it simply stops after about 90% of the receipt is scanned and complains that the document is jammed... when it clearly is not jammed. I can pull the receipt through by hand with zero resistance. I'll add that the software could use improvement. I would have taken off 1 star just for the software, but that is pretty much irrelevant after the document jamming problem. The features cover the basics, but it takes a bit to figure out how to configure it because of the interface isn't great and some settings are buried where I wouldn't expect them. When I learned how to define a workflow, I immediately thought of more workflow options, like saving as two different file formats at the same time, or the ability to assign a custom workflow when I push the button on the machine. If I have to scan many receipts, I want the process to be smooth. I want more options related to my task at hand. It does have a couple continuous scanning options buried in the settings, but that is only for scanning multiple documents as one file. Why not allow for continuous scanning to multiple files? That is what receipt scanning is, repeating the same task over and over 100 times. It has naming macro features for defining file names that it saves to. Why not give a macro option for the business name from the receipt? Or a PO name/number if available? Or purchase date? know it can OCR the receipt info when I save it to a TXT file. Let me use that information in the file name. I will say that the receipts I was able to scan seemed to have decent image quality. I'll give it that much. The scanning speed was really good. I would take 1/10 the speed if the jamming errors would go away. Maybe the higher model numbers in this series have better quality control.

Works great, produces fast, good quality scans.

I love this scanner! Set up on my laptop was a breeze. When I have a stack of receipts or papers I want to process (or even 1 or 2) I simply plug the scanner into my laptop and start scanning. You get a file folder that you’ve set up with a list of scanned images. You open an image and save it where you want to under whatever name you wish. I have 12 file folders for the months in 2024, and as I scan a receipt, I name it with the date and the company and the dollar amount and save it in the appropriate month’s folder. Example - 2024-11-19 Safeway $43.19. Then I pitch the paper copy. Come tax time, I can locate any receipt I need quickly. I also use the scanner to save copies of warranties, manuals, etc., - especially the directions from packaging for products I’ve purchased or received as gifts. It’s so much easier finding them on my laptop in a file called “Manuals” than hunting through drawers of miscellaneous paper. The scanner is simple to use and understand. A few times the paper/receipt has jammed. All it takes is opening the top of the scanner and closing it, repositioning the paper and pressing the button to scan it again. VERY user-friendly. And it’s compact and light enough to take on trips and scan receipts, souvenirs, tickets, etc. as we travel and not have to lug all the paper piles home with us.