Specifications

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General Specifications

Document Size Specifications

Print Media Specifications

Fax Specifications

Copy Specifications

USB Flash Drive Specifications

Scanner Specifications

Printer Specifications

Interface Specifications

Network Specifications

Computer Requirements Specifications

General Specifications

Printer Type			Inkjet
Print Head	Mono		Piezo with 420 nozzles x 1
	Colour		Piezo with 420 nozzles x 3
Memory Capacity			256 MB
LCD (liquid crystal display) *1			MFC-J3540DW 2.7 in. (67.5 mm) TFT Colour Touchscreen LCD MFC-J3940DW 3.5 in. (87.6 mm) TFT Colour Touchscreen LCD
Power Source			AC 220 to 240 V 50/60 Hz
Power Consumption *2			MFC-J3540DW Copying 3: Approx. 29 W Ready 4: Approx. 5 W Sleep 4: Approx. 0.9 W Power Off 4 5: Approx. 0.03 W MFC-J3940DW Copying 3: Approx. 29 W Ready 4: Approx. 5.5 W Sleep 4: Approx. 0.9 W Power Off 4 5: Approx. 0.03 W
Dimensions			MFC-J3540DW MFC-J3940DW
Weights			MFC-J3540DW 19.8 kg MFC-J3940DW 23.4 kg
Noise Level	Sound Pressure *6	Operating	Printing 50.0 dB (A) (Approx.) Copying (using the scanner glass) 51.5 dB (A) (Approx.)
Temperature	Operating		10 to 35°C
	Best Print Quality		20 to 33°C
Humidity	Operating		20 to 80% (without condensation)
	Best Print Quality		20 to 80% (without condensation)
Automatic Document Feeder (ADF)			Up to 50 pages Paper: 80 gsm

Measured diagonally.

Measured when the machine is connected to the USB interface. Power consumption varies slightly depending on the usage environment or part wear.

When using ADF, single-sided printing and scanning, resolution: standard / document: ISO/IEC 24712 printed pattern.

Measured according to IEC 62301 Edition 2.0.

Even when the machine is turned off, it will automatically turn itself on periodically for print head maintenance, and then turn itself off.

Noise depends on printing conditions.

Document Size Specifications

Document Size	ADF Width	105 to 297 mm
	ADF Length *1	148 to 431.8 mm
	Scanner Glass Width	Max. 297 mm
	Scanner Glass Length	Max. 431.8 mm

Up to 900 mm when using the long paper function.

Print Media Specifications

Paper Input	Paper Tray #1	Paper Type *1	Plain Paper, Inkjet Paper (coated paper), Glossy Paper, Recycled Paper
		Paper Size	(Landscape) A4, Letter, Executive, B5 (JIS) (Portrait) A3, Ledger, B4 (JIS), Legal, Mexico Legal, India Legal, Folio, A5, B6 (JIS), A6, Envelopes (C5, Com-10, DL, Monarch), Photo (10 x 15 cm), Photo L (9 x 13 cm), Photo 2L (13 x 18 cm), Index card (13 x 20 cm), 16K (195 x 270 mm)
		Maximum Paper Capacity	Up to 250 sheets of 80 gsm plain paper
	Paper Tray #2 (MFC-J3940DW)	Paper Type	Plain Paper, Recycled Paper
		Paper Size	(Landscape) A4, Letter (Portrait) A3, Ledger, B4 (JIS), Legal, Mexico Legal, India Legal, Folio
		Maximum Paper Capacity	Up to 250 sheets of 80 gsm plain paper
	Multi-purpose tray (MP tray) *2 (MFC-J3940DW)	Paper Type *1	Plain Paper, Inkjet Paper (coated paper), Glossy Paper, Recycled Paper
		Paper Size / Maximum Paper Capacity	(Landscape) A4, Letter, Executive, B5 (JIS) (Portrait) A3, Ledger, B4 (JIS), Legal, Mexico Legal, India Legal, Folio, A5, B6 (JIS), A6, Envelopes (C5, Com-10, DL, Monarch), Photo (10 x 15 cm), Photo L (9 x 13 cm), Photo 2L (13 x 18 cm), Index card (13 x 20 cm), 16K (195 x 270 mm)	Up to 100 sheets of 80 gsm Plain Paper
			Long Paper (Width: 88.9 - 297 mm / Height: 431.9 - 1200 mm)	Up to 1 sheet
	Manual Feed Slot (MFC-J3540DW)	Paper Type *1	Plain Paper, Inkjet Paper (coated paper), Glossy Paper, Recycled Paper
		Paper Size	(Landscape) A4, Letter, Executive, B5 (JIS) (Portrait) A3, Ledger, B4 (JIS), Legal, Mexico Legal, India Legal, Folio, A5, B6 (JIS), A6, Envelopes (C5, Com-10, DL, Monarch), Photo (10 x 15 cm), Photo L (9 x 13 cm), Photo 2L (13 x 18 cm), Index card (13 x 20 cm), 16K (195 x 270 mm)
		Maximum Paper Capacity	Up to 1 sheet
Paper Output *1			Up to A4/Letter size paper Up to 100 sheets of 80 gsm Plain Paper (face up print delivery to the output paper tray) Over A4/Letter size paper Up to 50 sheets of 80 gsm Plain Paper (face up print delivery to the output paper tray)

For glossy paper, remove any printed pages from the output paper tray immediately to avoid smudging.

We recommend using the MP tray for glossy paper.

Fax Specifications

Compatibility	ITU-T Super Group 3
Modem Speed	Automatic Fallback: 33,600 bps
Scanning Width (Single-sided document)	288 mm (A3)
Scanning Width and Length (2-sided document) (MFC-J3940DW)	Width: 288 mm (A3) (ADF) Length: 425.8 mm (ADF)
Printing Width	291 mm (A3)
Greyscale	Monochrome: 8 bit (256 levels) Colour: 24 bit (8 bit per colour/ 256 levels)
Resolution (Horizontal)	203 dpi
Resolution (Vertical)	Standard: 98 dpi (Mono) 196 dpi (Colour)
	Fine: 196 dpi (Mono) 196 dpi (Colour)
	Superfine: 392 dpi (Mono)
	Photo: 196 dpi (Mono)
Address Book	100 names x 2 numbers or Email addresses
Groups	Up to 6
Broadcasting	250 (200 Address Book/50 Manual Dial)
Automatic Redial	3 times at 5 minute intervals
Memory Transmission	Up to 150 pages *1
Out of Paper Reception	Up to 150 pages *1

‘Pages’ refers to the ‘ITU-T Test Chart #1’ (a typical business letter, Standard resolution, MMR code).

Copy Specifications

Colour/Monochrome		Yes/Yes
Copy Width		291 mm *1
Multiple Copies		Stacks/Sorts up to 999 pages
Enlarge/Reduce		25% to 400% (in increments of 1%)
Resolution		Prints up to 1200 × 4800 dpi
Automatic 2-sided (MFC-J3940DW)	Paper Type	Plain Paper, Recycled Paper
	Paper Size	A3, Ledger, Legal, Mexico Legal, India Legal, Folio, A4, A5, Letter

When copying on A3 size paper.

USB Flash Drive Specifications

Compatible Media		USB Flash drive *1
JPEG Print	Resolution	Up to 1200 x 4800 dpi
	Paper Type	Plain Paper, Inkjet Paper (coated paper), Glossy Paper, Recycled Paper
	Paper Size	A4, Letter, A3, Ledger, Photo (10 x 15 cm), Photo 2L (13 x 18 cm)
	File Format	JPEG (Progressive JPEG format is not supported)
Scan to Media	File Format	JPEG, PDF (Colour, Grey) TIFF, PDF (Monochrome)

USB Flash drive is not included. Full-Speed USB 2.0. USB Mass Storage standard. Supported formats: FAT12/FAT16/FAT32/exFAT

Scanner Specifications

Colour/Monochrome	Yes/Yes
TWAIN Compliant	Yes (Windows 7 SP1 / Windows 8.1 / Windows 10)
WIA Compliant	Yes (Windows 7 SP1 / Windows 8.1 / Windows 10)
Colour Depth	48 bit colour processing (Input) 24 bit colour processing (Output)
Greyscale	16 bit colour processing (Input) 8 bit colour processing (Output)
Resolution	Up to 19200 × 19200 dpi (interpolated) *1 Up to 1200 × 2400 dpi (optical) (from Scanner Glass) Up to 600 × 600 dpi (optical) (from ADF)
Scanning Width and Length (Single-sided document)	(Scanner Glass) Width: Up to 295 mm Length: Up to 429.8 mm (ADF) Width: Up to 295 mm Length: Up to 429.8 mm
Scanning Width and Length (2-sided document) (MFC-J3940DW)	Width: Up to 295 mm (ADF) Length: Up to 429.8 mm (ADF)

Maximum 1200 × 1200 dpi scanning with the WIA driver in Windows 7 SP1, Windows 8.1 and Windows 10 (resolutions up to 19200 × 19200 dpi can be selected using the scanner utility).

Printer Specifications

Resolution		Up to 1200 × 4800 dpi *1
Printing Width *2		291 mm Borderless *3: 297 mm
Borderless		A4, Letter, A3, Ledger, A6, Photo (10 x 15 cm), Photo L (9 x 13 cm), Photo 2L (13 x 18 cm), Index card (13 x 20 cm)
Automatic 2-sided	Paper Type	Plain Paper, Recycled Paper
	Paper Size	A3, Ledger, B4 (JIS), Legal, Mexico Legal, India Legal, Folio, A4, A5, Letter, Executive, B5 (JIS), B6 (JIS), 16K (195 x 270 mm)
Print Speed		See your model's page on your local Brother website.

Data is based on Brother lab test results and may vary from actual due to usage environment and settings. Best print resolution 1200x4800 (measured with print quality set to best mode and media selected as glossy photo paper)

When printing on A3 size paper.

When the Borderless feature is set to On.

Interface Specifications

USB 1 2	Use a USB 2.0 interface cable that is no longer than 2 m.
LAN	Use an Ethernet UTP cable category 5 or greater.
Wireless LAN	IEEE 802.11a/b/g/n (Infrastructure) IEEE 802.11a/g/n (Wi-Fi Direct)
NFC (MFC-J3940DW)	Yes

Your machine has a USB 2.0 Hi-Speed interface. The machine can also be connected to a computer that has a USB 1.1 interface.

Third party USB ports are not supported.

Network Specifications

You can connect your machine to a network for Network Printing, Network Scanning, PC-Fax Send, and PC-Fax Receive (Windows only).

Network Security (Wired)		APOP, SMTP-AUTH, SSL/TLS (IPPS, HTTPS, FTPS, SMTP, POP3, IMAP4), SNMP v3, 802.1x (EAP-MD5, EAP-FAST, PEAP, EAP-TLS, EAP-TTLS), Kerberos, IPsec
Network Security (Wireless)		APOP, SMTP-AUTH, SSL/TLS (IPPS, HTTPS, FTPS, SMTP, POP3, IMAP4), SNMP v3, 802.1x (EAP-FAST, PEAP, EAP-TLS, EAP-TTLS), Kerberos, IPsec
Wireless Network Security *1		WEP 64/128 bit, WPA-PSK (TKIP/AES), WPA2-PSK (TKIP/AES), WPA3-SAE (AES)
Wireless Setup Support Utility	WPS	Yes

Wi-Fi Direct supports WPA2-PSK (AES) only.

Computer Requirements Specifications

Supported Operating Systems And Software Functions

Computer Platform & Operating System Version		PC Interface			Processor	Hard Disk Space to Install *1
		USB *2	Wired LAN	WLAN (Wi-Fi)		For Drivers	For Applications (Including Drivers)
Windows Operating System	Windows 7 SP1 3 4 5 Windows 8.1 3 *4	Printing PC Fax *6 Scanning			32 bit (x86) or 64 bit (x64) processor	650 MB	1.3 GB
	Windows 10 Home 3 4 Windows 10 Pro 3 4 Windows 10 Education 3 4 Windows 10 Enterprise 3 4
	Windows Server 2008 *5	Printing Scanning	Printing			50 MB	N/A
	Windows Server 2008 R2 *5 Windows Server 2012 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019				64 bit (x64) processor
Mac Operating System *7	macOS v10.14.6 macOS v10.15.x macOS v11	Printing PC-Fax (Send) 6 8 Scanning			64 bit processor	N/A	550 MB

An Internet connection is required to install the software if the Brother installation disc is not supplied.

Third party USB ports are not supported.

For WIA, 1200 x 1200 resolution. Brother Scanner Utility enables enhancing the resolution up to 19200 x 19200 dpi.

Nuance™ PaperPort™ 14SE supports Windows 7 SP1, Windows 8.1, Windows 10 Home, Windows 10 Pro, Windows 10 Education and Windows 10 Enterprise.

Windows 7 SP1 / Windows Server 2008 / Windows Server 2008 R2 supported by Extend Security Updates until Jan 10, 2023.

PC-Fax supports black and white only.

Mac OS Disclaimer

AirPrint capable: Printing or scanning via macOS requires the use of AirPrint. Mac drivers are not provided for this machine.

AirPrint only.

For the latest driver updates, go to your model's Downloads page at support.brother.com.

All trademarks, brand and product names are the property of their respective companies.

Related Information

Appendix

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