Brother DSmobile DS‑640 Portable Document Scanner

The Brother DS‑640 is a compact, lightweight mobile document scanner ideal for scanning single-sided documents, receipts, ID cards and more while on the move or working in tight spaces. It’s USB‑powered and delivers decent speed with high quality. :contentReference[oaicite:0]{index=0}

Features

• Speed: Up to ~15 pages per minute in both mono and colour for A4 documents. :contentReference[oaicite:1]{index=1}
• Optical resolution: 600 × 600 dpi; supports interpolation up to higher resolutions. :contentReference[oaicite:2]{index=2}
• Colour depth: 48‑bit input / 24‑bit output for accurate colour scanning. :contentReference[oaicite:3]{index=3}
• Media flexibility: Supports documents from 50.8 mm up to 215.9 mm width; length up to ~1828.8 mm. Also handles plastic cards (embossed) up to ~1.24 mm thick. :contentReference[oaicite:4]{index=4}
• Portable design: Small, lightweight (~466 g), powered via USB bus (no external adapter needed). :contentReference[oaicite:5]{index=5}

Technical Specifications

• Scanning Speed: ~15 ppm (pages per minute) for A4 (mono & colour) :contentReference[oaicite:6]{index=6}
• Resolution: Optical 600 × 600 dpi; interpolated resolutions higher. :contentReference[oaicite:7]{index=7}
• Input / Output Colour Depth: 48‑bit input, 24‑bit output. :contentReference[oaicite:8]{index=8}
• Media Size Supported: Width 50.8‑215.9 mm, Length 86.4‑1828.8 mm; also receipts size (74‑79.38 mm etc.) :contentReference[oaicite:9]{index=9}
• Paper Weight: 35‑270 g/m² :contentReference[oaicite:10]{index=10}
• Plastic Card / Embossed Card Support: up to ~1.24 mm thickness; plastic card size approx. 85.60 × 53.98 mm. :contentReference[oaicite:11]{index=11}
• Memory: 128 MB standard. :contentReference[oaicite:12]{index=12}
• Power: USB bus‑powered. Scanning ~2.3 W; idle ~1.3 W; power‑down mode ~0.01 W. :contentReference[oaicite:13]{index=13}
• Dimensions & Weight: Approx. 301 × 50.6 × 36.8 mm; ~466 g. :contentReference[oaicite:14]{index=14}
• Operating Environment: 5 °C to 35 °C; humidity 20%‑80%. Storage: ‑20 °C to 60 °C. :contentReference[oaicite:15]{index=15}

Benefits

• Great for mobile professionals, field work, or front desks due to its small footprint and USB power.
• No need for external power supplies; scan wherever a USB port is available.
• Handles a wide range of media types and sizes including plastic cards, receipts, and long documents.
• Good image quality with reasonable colour depth and optical resolution for general document scanning.

Keywords

Brother DS‑640, mobile document scanner, portable scanner, USB‑powered scanner, A4 document scanner, receipt scanner, card scanner, 600 dpi scanner, 15 ppm, lightweight scanner.