The Canon i-SENSYS MF421dw has a five-inch LCD colour touchscreen and also has mobile connectivity for iOS and Android, making it very easy and straightforward to use. You can link your tablet or smartphone over Wi-Fi for ease of use with the Canon PRINT app


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Machine type

Mono Laser All-In-One

Available functions

MF421dw / MF428x : Print, Copy and Scan

MF426dw / MF429x: Print, Copy, Scan and Fax


Print speed

Single sided : Up to 38 ppm (A4); Up to 63.1 ppm (A5-Landscape)

Double sided : Up to 30.3 ipm (A4)

Printing method

Monochrome laser beam printing

Print quality

Up to 1200 x 1200 dpi

Print Resolution

600 x 600 dpi

Warm-up Time

Approx. 14 seconds or less from power on

First Print Out Time

Approx: 5.5 seconds or less

Printer languages

MF421dw: UFRII, PCL 5e1, PCL6

MF426dw / MF428x / MF429x: UFRII, PCL 5e2, PCL6, Adobe® PostScript


MF421dw/MF426dw: 45 PCL fonts

                             136 PostScript fonts

MF428x/MF429x: 93 PCL fonts

                             136 PostScript fonts

Print margins

5 mm-top, bottom, left and right

10 mm-top, bottom, left and right (Envelope)

Toner saver mode


Advanced printing features

Secure Print

Print from USB memory key (JPEG/TIFF/PDF)

Barcode Print3 (MF428x, MF429x only)

Google Cloud Print Ready

iOS: AirPrint, Canon PRINT Business app

Android; Mopria certified, Canon PRINT Business app


Copy Speed

Single sided (A4): Up to 38 ppm

Double sided (A4): Up to 30.3 ipm

First Copy Output Time (FCOT)

ADF (A4): Approx. 6.6 seconds or less

Platen (A4): Approx. 6.4 seconds or less

Copy resolution

Up to 600 x 600 dpi

Copy modes

Text, Text/Photo (Default),Text/Photo (High Quality), Photo

Double sided copying

2-sided to 2-sided (Automatic)

Multiple Copy

Up to 999 copies


25-400% in 1% increments

Other features

Frame Erase, Collate, 2 on 1, 4 on 1, ID card copy




Scan Resolution

Optical: Up to 600 x 600 dpi

Enhanced: Up to 9600 x 9600 dpi

Scan speed

Single sided mono: 38ipm (300x600dpi)

Single sided colour: 13ipm (300x600dpi)

Double sided mono: 70ipm (300x600dpi)

Double sided colour: 26ipm (300x600dpi)

Colour scanning depth

24 bit/24 bit (input/output)


256 levels



Max. scan width


Scan to E-mail / PC / USB memory key / FTP

TIFF/JPEG/PDF/Compact PDF/Searchable PDF/Encrypted PDF3(MF428x, MF429x only)/PDF (Digital signature)4 (MF428x, MF429x only)

Scan to Cloud





Modem Speed

33.6 Kbps (Up to 3 seconds/page6)

Receive mode

Fax only, Fax/Tel Auto Switch, Answer Mode, Manual

Fax resolution

Standard: 200 x 100 dpi

Fine: 200 x 200 dpi

Super fine: 200 x 400 dpi

Ultra fine: 400 x 400 dpi

FAX memory

Up to 512 pages7

Speed dials

Up to 281 dials

Group dials/destinations

Max. 299 dials / Max. 299 destinations

Sequential broadcast

Max. 310 destinations

Memory backup

Permanent fax memory backup (Backup with flash memory)

Double sided copying

Yes (Transmit and Receive)

Other features

Fax Forwarding, Dual Access, Remote Reception, PC Fax (TX only) DRPD, ECM, Auto Redial, Fax Activity Reports,  Fax Activity Result Reports,  Fax Activity Management Reports

Media handling

Scanner Type

Platen, 2-sided ADF (single pass)

Paper input (Standard)

250-sheet cassette

100-sheet multi-purpose tray

50-sheet ADF

Paper input (Option)

550-sheet cassette

Paper output


Media types

Plain paper, Recycled paper, Heavy Paper, Thin paper, Label, Post card, Envelope

Media sizes

Cassette (Standard and optional):

A4, A5, A5 (Landscape), A6, B5, Legal, Letter, Executive, Statement, OFFICIO, B-OFFICIO, M-OFFICIO, GLTR, GLGL, Foolscap, 16K, Custom sizes: Min. 105 x 148 mm  Max. 215.9 x 355.6 mm.

Multi-purpose tray:

A4, A5, A5 (Landscape), A6, B5, Legal, Letter, Executive, Statement, OFFICIO, B-OFFICIO, M-OFFICIO, GLTR, GLGL, Foolscap, 16K, Indexcard, Envelope (COM10, Monarch, C5, DL), Custom sizes: Min 76.2 x 127 mm  Max. 215.9 x 355.6 mm.


A4, A5, A6, B5, Legal, Letter, Statement, Custom sizes: Min. 105 x 128 mm  Max 215.9 x 355.6 mm

Media weights

Cassette (standard and optional): 52 to 120 g/m²

Manual purpose tray: 52 to 163 g/m²

ADF: 50 to 105 g/m²

Double Sided Printing

A4, Legal, Letter, OFFICIO, B-OFFICIO, M-OFFICIO, GLGL, Foolscap

Custom size - Min. 210 x 279.4 mm Max. 215.9 x 355.6 mm

60 to 120 g/m2

Interface & Software

Interface type

USB 2.0 Hi-Speed, 10BASE-T/100BASE-TX/1000Base-T, Wireless 802.11b/g/n, Wireless Direct Connection

Operating Systems Compatibility

Windows® 10 / Windows® 8.1 / Windows® 7 / Server® 2016 / Server® 2012R2 / Server® 2012 / Server® 2008R2 / Server® 2008

Mac OS X version 10.8.5 & up


Network protocols


LPD, RAW, Port9100, IPP, IPPS, WSD (IPv4,IPv6)


Email, SMB, WSD-Scan(IPv4, IPv6), FTP-Scan, iFAX

TCP/IP Application Services:

Bonjour(mDNS), HTTP, HTTPS, POP before SMTP (IPv4,IPv6)


DHCPv6 (IPv6)


SNMPv1, SNMPv3 (IPv4,IPv6)

Security (wired):

IP/Mac address filtering, IEEE802.1X, SNMPv3, SSL (HTTPS, IPPS)

Security (wireless):


Software and printer management

MF Scan Utility,

Remote User Interface (RUI),

Department ID Management,

Toner Status Tool,

iW Management Console: Server-based software for centralised management of a fleet of devices

eMaintenance: embedded RDS allows remote eMaintenance services such as meter capture, automatic consumables management and remote diagnostics.

Universal Log-in Manager (MF428x, MF429x only)

uniFLOW online (MF428x, MF429x only)

uniFLOW online Express (MF428x, MF429x only)

uniFLOW Compatibility with embedded uniFLOW Login Device Client (MF428x, MF429x only)

General features

Recommended Monthly Print Volume

750 - 4,000 pages per month

Duty cycle

Max. 80,000 pages per month9

Processor Speed

800MHz x 2



Control Panel

12.7 cm LCD Colour Touch Screen

Dimensions with trays (W x D x H)

453 mm x 464 mm x 392 mm

Installation Space (W x D x H)

682 mm x 1,083 mm x 895 mm


Approx. 16.9 Kg

Operating Environment

Temperature: 10 to 30ºC (50 to 86ºF)

Humidity: 20 to 80% RH (no condensation)

Power Source

220-240V(±10%)  50/60Hz (±2Hz)

Power Consumption

Maximum: Approx. 1,300 W

Standby: Approx. 10 W

Sleep mode: Approx. 0.9 W

Typical Electricity Consumption (TEC): 1.2 kWh/week (230V)

For detailed information relating to Lot26 regulation, please go to:

Noise Levels

Sound Pressure10:

Active: 55 dB

Standby: Inaudible11

Sound Power12:

Active:  72.2 dB

Standby: Inaudible13



Cartridge 052 (3,100 pages14)15

Cartridge 052H (9,200 pages16)17

Accessories options


CST.Feeding Module-AH1 (550-sheet cassette)

TEL 6 Kit Long Cord (Telephone handset) (MF426dw, MF428x,  MF429x only)

Barcode Printing Kit-E1E (MF428x, MF429x only)

MiCard Multi (Card reader for identification with RFID or magnetic cards with uniFLOW) (MF428x, MF429x only)

Micard Plus (Card reader for identification with RFID or magnetic cards with uniFLOW) (MF428x, MF429x only)

MiCard Attachment Kit-B1 (MF428x, MF429x only)

Send PDF Security Feature Set-E1 (MF428x, MF429x only)

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