Brother MFC-J4355DW & MFC-J4555DW vs J4440DW & J4540DW – What’s New?

Brother has launched two new A4 multifunction inkjet printers, the MFC-J4355DW and MFC-J4555DW. These models replace the popular MFC-J4440DW and MFC-J4540DW, bringing improved paper handling, smarter connectivity, and more efficient INKvestment tanks.

Why the New Models?

With the transition from the J4440DW/J4540DW series to the J4355DW/J4555DW, Brother is refining its INKvestment Tank platform to give users:

• More ink in the box – up to 1 year’s worth under typical use
• Better app and mobile integration (Brother Mobile Connect, AirPrint, Mopria)
• Improved paper handling – dual trays in the J4555DW (400 sheets total)
• Simplified displays and controls
• Updated connectivity (Ethernet + NFC on J4555DW)

Old vs New – Model Comparison

Upgrade Recommendations

• If you currently own a MFC-J4440DW, the MFC-J4355DW is a direct replacement, offering the same compact form factor but with better ink efficiency and app integration.
• If

  Brother is set to refresh its A4 inkjet multi-function line with two new models: the MFC-J4355DW and MFC-J4555DW. These will take over from the existing MFC-J4440DW and MFC-J4540DW, offering improved capacity, smarter features, and better total cost of ownership thanks to the latest INKvestment innovations.

  In this post, we’ll present each new model, highlight improvements over the outgoing models, and compare the two new siblings to help you choose the right one for your needs.

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  What’s New and What’s Improved

  Before diving into individual models, here are some overarching enhancements across the new models:

  • INKvestment Tank architecture — The new units feature Brother’s refined INKvestment technology, combining high-capacity cartridges with internal ink storage to reduce interruptions and lower running costs.

  • Longer in-box ink — Brother claims “up to 1 year of ink in the box” under a typical usage profile, reducing the frequency of ink replacements.

  • Modern connectivity & mobile support — Full support for wireless, mobile apps (Brother Mobile Connect), AirPrint, Mopria, and in the case of the 4555DW, NFC.

  • Streamlined design & usability — The new models feature updated displays, better ink-level reporting (via a page gauge on the LCD), intuitive menus, and compact footprints.

  • Improved paper handling (on the 4555DW) — The 4555DW adds a second paper tray, giving a combined capacity that helps reduce paper reloading.

  Compared with the outgoing MFC-J4440DW and MFC-J4540DW, these enhancements aim to improve uptime, flexibility, and total operating cost. (If you like, I can include a side-by-side spec comparison with the outgoing models too.)

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  Model Spotlight: Brother MFC-J4355DW

  Brother MFC‑J4355DW

  Key Features & Specs

  • Functions: Print, Copy, Scan, Fax (A4)

  • Print speed (A4): Up to 20 ppm mono, 19 ppm colour

  • Print resolution: Up to 1200 × 4800 dpi

  • Memory: 256 MB

  • Paper handling:
      • Input: 150-sheet main tray
      • ADF: 20 sheets (single sided)
      • Output: 100 sheets

  • Duplex (automatic two-sided) printing: Yes

  • Scan resolution: Flatbed 1200 × 2400 dpi; ADF 1200 × 600 dpi

  • Connectivity: Wireless (Wi-Fi), USB; supports Brother Mobile Connect, AirPrint, Mopria

  • Display: 4.5 cm colour LCD touchscreen

  • Dimensions / weight: ~435 × 343 × 180 mm; ~8.9 kg (with supplies)

  Use Cases & Suitability

  The MFC-J4355DW is ideal for smaller offices or home offices where print volumes are moderate, but reliability and low running cost matter. Its decent paper capacity and automatic two-sided printing reduce frequent interventions, and the INKvestment design helps ensure fewer ink changes.

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  Model Spotlight: Brother MFC-J4555DW

  While the J4355DW covers moderate workloads, the MFC-J4555DW ups the ante, offering extended capacity and flexibility for heavier usage.

  Key Features & Specs

  • Functions: Print, Copy, Scan, Fax (A4)

  • Print speed (A4): Up to 20 ppm mono, 19 ppm colour

  • Print resolution: Up to 1200 × 4800 dpi

  • Memory: 256 MB

  • Paper handling:
      • Input: 150-sheet tray + 250-sheet lower tray = 400 sheets total
      • ADF: 20 sheets (single sided)
      • Output: 100 sheets

  • Duplex (automatic two-sided) printing: Yes

  • Scan resolution: Flatbed 1200 × 2400 dpi; ADF 1200 × 600 dpi

  • Connectivity: Wireless (Wi-Fi, dual-band), USB, Ethernet; supports NFC in some regions; Brother Mobile Connect, AirPrint, Mopria

  • Display: 2.7″ (6.8 cm) colour touchscreen

  • Security & enterprise features: TLS/SSL, LDAP, 802.1x, secure function lock and more

  • Dimensions / weight: ~435 × 355 × 250 mm; ~10.4 kg

  Use Cases & Suitability

  This model is better suited for medium offices or environments with higher throughput demands. The extra paper tray means fewer refills, making it suited for users who run multiple print jobs in a day or have variable paper types loaded concurrently (e.g. plain in one tray, special media in another). The inclusion of more robust security features and connectivity options further positions it for business environments.

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  Comparison: MFC-J4355DW vs MFC-J4555DW

  Here’s a side-by-side breakdown to help you decide:

  Feature	MFC-J4355DW	MFC-J4555DW
  Target workload / scale	Small to medium use	Medium to heavier use
  Paper capacity	150-sheet main + 20 ADF	150 + 250 (400 total) + 20 ADF
  Print / Copy / Scan / Fax	Yes (all)	Yes (all)
  Automatic duplex printing	Yes	Yes
  ADF capacity / single-sided scan	20 sheets	20 sheets
  Connectivity	Wireless, USB, mobile apps	Wireless (dual-band), USB, Ethernet, NFC
  Display	4.5 cm LCD touchscreen	6.8 cm (2.7") colour touchscreen
  Security / Enterprise features	Basic (TLS, etc.)	More advanced (LDAP, enterprise protocols)
  Weight & footprint	~8.9 kg; ~435×343×180 mm	~10.4 kg; ~435×355×250 mm
  Use case strength	Home / small office with moderate volume	Offices needing high uptime, more capacity, multiple users