Question 1

How many pagers will this scan at one time?

Accepted Answer

Please note this is for the DS-740D (which does double-sided page scans; the DS-640 is not a duplex scanner. It is worth spending the extra $30-$40 bucks for double-sided pages scan feature).

It took me a while to figure this out. Yes, it scans multi documents (continuous feed) but you have to feed the sheets one at a time (which is much better than scanning individually. It will add all your scans into 1 document (such as PDF). 
The previous user answering this question did not give a complete or totally correct answer: yes, you can push the button each time but it is better to feed the documents without pushing the start button every time. Here's how:

I do not own Windows so this ***this the instructions for MAC**** (I am sure the software for Windows is probably much easier):
- Download the Brother iPrint&Scan app software from their website as well as the scanner driver and install.
- Plug in your device to computer.
- Open the iPrint&Scan app (software).
You will see two options: a "Scan" icon OR the "DS-740D" printer icon.
- If you push the "Start button" (on the physical device) you will set all your scan preferences ahead of time under the black printer icon (labeled) DS-740D) on the iPrint software at the "Machine Scan Settings" option. This method is the LONG way for multiple sheets and is best to use for a one-off quick scan (unless you want to push the physical button 100 times for large documents).
- If you want to use continuous feed: CLICK the black scanner icon in the iPrint software. 
a) Click: "All Settings" - go to Feed Control & checkmark "Continuous Scan" (ON)
b) Put your first page in the scanner. 
c) Click the green "SCAN" button (on the software, NOT the start button on the device). After it scans, just keep feeding the scanner. It will keep scanning all the documents. The nice thing about this device is it gently grabs onto your page it senses a new page (this way you don't have to shove it)
d) When you are done, click the "Finish" scanning button (that will show in the software window). After this,  you will see a preview of your scans/ you can name your file/ choose what format you want to save the docs as/ set PDFs to OCR if needed (a lot of options here). The best part is you can also click the "ADD" button if  you want to add more pages.

I know this is kinda long but you won't find good instruction on the online manual or from the Brother Support team replying here.

Question 2

Can I scan 1200 dpi x 1200

Accepted Answer

The Brother DS640  machine has a Interpolated Scan Resolution (max. dpi) up to 1200 x 1200 dpi and an Optical Scan Resolution (max. dpi) 600 X 600. We recommend  you to check all the specifications of the product at our support site.

Question 3

Is this a good scanner for photos?

Accepted Answer

The Brother DS-640 scanner is good for scanning photos.

Question 4

Can this scanner scan to a flash drive or must you go through computer hook up?

Accepted Answer

The Brother DS640 does not support scanning to USB flash drive and does require a computer for scanning.

ASIN	B09G4YDBXZ
Best Sellers Rank	11,067 in Amazon Renewed ( See Top 100 in Amazon Renewed ) 307 in Document Scanners 5,450 in Renewed Computers & Accessories
Brand	Brother
Brand Name	Brother
Color Depth	48, 24
Connectivity technology	USB
Customer Reviews	4.3 out of 5 stars 106 Reviews
Greyscale Depth	8-bit
Item Dimensions D x W x H	5.6D x 30.2W x 3.6H centimetres
Item Type Name	Mobile Scanner
Item Weight	467 g
Manufacturer	BROTHER
Media Type	Business Card, Laminated Card, Plain Paper, Plastic Card, Receipt
Minimum System Requirements	Windows 7
Model Name	Compact
Model name	Compact
Network Connectivity Technology	USB
Optical Sensor Technology	CIS
Product dimensions	5.6D x 30.2W x 3.6H centimetres
Resolution	300
Scanner Type	Business Card, Document
Scanner type	Business Card, Document
Standard Sheet Capacity	1
UPC	012502664093
Wattage	2.5 watts

Brother DS-640 Compact Mobile Document Scanner, (Renewed)

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