Brother DS-640
Score: 72/100
Canon imageFORMULA R40II
Score: 81/100Rankings
The Canon imageFORMULA R40II is a space-saving desktop scanner that delivers fast 45 ppm duplex performance and robust cloud integration. Its lack of wireless networking and a modest 60-sheet feeder limit its suitability for larger batch workflows. Ideal for small offices and home users needing high-speed scanning in a compact footprint.
The Brother DS-640 is a compact, USB-powered scanner delivering 600 dpi color scans and built-in OCR, ideal for mobile, occasional scanning tasks. Its lack of duplex capability and an automatic feeder limit its usefulness for higher-volume or double-sided work. Best suited for travelers and home-office users needing quick single-page scans.
| Attribute | | |
|---|---|---|
600 dpibest | 600 dpibest | |
16 ppm | 45 ppmbest | |
— | 60 pagesbest | |
— | 24 bitsbest | |
| ↓ lower better | — | 15.6 Wbest |
215.9 mm | 6,096 mmbest | |
| ↓ lower better | 0.467 kgbest | 3.2 kg |
1 yearsbest | 1 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Features(1) | ||
Duplex Scanning | false | true |
Performance(1) | ||
Scan Speed (pages per minute) (ppm) | 16 ppm | 45 ppm |
Connectivity(1) | ||
USB Version | USB 3.0 | USB 2.0 Type-C |
Design & Build(3) | ||
Maximum Document Size (mm) | 215.9 mm | 6096 mm |
Weight (kg) | 0.4665 kg | 3.20 kg |
Dimensions (W×D×H) | 55.88×35.56×302.26 mm | 6.2992 x 11.2126 x 6.2992 inches |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the DS-640 for its excellent scan quality, vibrant color reproduction, and reliable OCR at a budget price, emphasizing its suitability for portable, occasional use. However, they consistently point out the lack of duplex scanning and an automatic feeder as significant drawbacks for any workflow that involves double-sided or multi-page documents.
Everyday users love the scanner's speed, portability, and ease of use, frequently mentioning the 3-second page scans and clear image output. Common complaints revolve around the missing duplex function, occasional paper jams, and a software installation process that can be slower than expected.
“great little scanner... 3 seconds per page”
“clear images... no bulky all-in-one needed”
“performs beautifully daily”
