Brother MFC-L3780CDW Review (2026): Honest Pros, Cons & Who It's Really For

by William Elward · Editorial policy Last Updated: November 10, 2026

Disclosure: Castle Ink sells compatible ink and toner cartridges. We may earn a commission on qualifying purchases through links on this page, including Amazon links. This doesn't affect our opinions or conclusions.

Our review process is explained in our printer ranking methodology. For more options in this category, see our 10 Best Small Business Printers roundup.

Last updated: October 24, 2026.

Quick Verdict

The Brother MFC-L3780CDW is a good printer for a small office or busy home office that prints, scans and copies every day. It's the top model in Brother's MFC-L3700 color all-in-one family. It prints up to 31 pages per minute in black and in color, and it has single-pass duplex scanning, which captures both sides of a page in one trip through the 50-sheet document feeder. It also adds an NFC badge reader and works with Brother's highest-yield TN229XXL toner. The cheaper MFC-L3720CDW and MFC-L3765CDW don't have those features.

The downsides are the price (Brother lists it at $569.99), color pages that cost a lot with standard-yield toner, and a body that weighs close to 48 pounds. If you scan double-sided paperwork every week or print a few hundred pages a month or more, it's worth paying more than you would for the lower models. If you mostly print and rarely scan, the cheaper siblings or a print-only model make more sense.

Pros: 31 ppm speed, single-pass duplex scan and copy, low running costs with XL/XXL toner, full fax, NFC and Gigabit Ethernet
Cons: Higher upfront price, expensive standard-yield color toner, bulky and heavy, not a photo printer

Brother MFC-L3780CDW Specs at a Glance

These specs come from Brother's own US and Canadian product pages.

Spec	MFC-L3780CDW
Functions	Print, copy, scan, fax
Print technology	LED ("digital color" with laser-quality output)
Print speed	Up to 31 ppm black and color (one-sided)
First page out	12.5 seconds from ready
Print resolution	2400 x 600 dpi class
Two-sided printing	Automatic, on by default
Scanning	Flatbed plus 50-sheet ADF; single-pass duplex scan and copy
Scan speed	Up to 29 ipm black / 22 ipm color one-sided; 58 ipm black / 34 ipm color two-sided
Paper input	250-sheet tray plus 30-sheet multipurpose tray; optional 250-sheet LT-310CL tray (500 sheets total)
Output tray	150 sheets
Display	3.5" color touchscreen
Connectivity	Dual-band Wi-Fi (2.4/5 GHz), Wi-Fi Direct, Gigabit Ethernet, USB 2.0, front USB host port, integrated NFC card reader
Mobile printing	Brother Mobile Connect, AirPrint, Mopria
Fax	33.6 Kbps modem, 500-page memory, PC fax and internet fax
Recommended monthly volume	Up to 4,000 pages (duty cycle up to 50,000 pages/month)
Starter toner in box	About 2,300 pages black; 1,200 pages each cyan, magenta, yellow
Dimensions / weight	16.1" W x 18.2" D x 15.8" H; about 47.8 lb
Warranty	1-year limited
List price	$569.99 at Brother (street prices vary)

Is the MFC-L3780CDW a Laser Printer? LED vs. Laser Explained

Technically no. It's an LED printer that works almost exactly like a laser. Brother markets it as a "digital color" all-in-one with "laser-quality output," and its Canadian spec sheet lists the print technology as LED. Most retailers, and most buyers, just call it a color laser printer.

Both technologies draw an image on a light-sensitive drum, pick up toner, and fuse it to paper with heat. The only difference is the light source: a laser printer sweeps one beam across the drum with a spinning mirror, while an LED printer uses a fixed row of LEDs that covers the full width of the page. With fewer moving parts, the LED engine can be more compact.

In practice it behaves like a laser printer: dry toner instead of ink, nothing to dry out between jobs, and crisp text on plain paper.

Print Quality: Text, Graphics and Photos

Text

Black text is what this class of printer does best. Small fonts, spreadsheets, and forms print sharp on everyday copy paper, and toner won't smear under a highlighter the way some inkjet ink can.

Business Graphics

Charts, logos, flyers, and color-coded reports look clean and saturated. Large solid-color areas can show slight unevenness, as on most entry-level color LED and laser printers. If colors look shifted, run color calibration and registration from the touchscreen first.

Photos

This is not a photo printer. Toner can't match the smooth gradients and glossy finish of a photo inkjet. Snapshots in a newsletter are fine; for prints you'll frame, use a photo inkjet or a print shop.

Scanning, Copying and Fax

The scanner is what sets the MFC-L3780CDW apart from the cheaper models in the family. Its 50-sheet automatic document feeder has sensors on both sides of the paper path, so a two-sided page is captured in one pass. Brother rates two-sided scanning at up to 58 images per minute in black and 34 in color. The MFC-L3720CDW and MFC-L3765CDW also have 50-sheet feeders, but Brother doesn't list duplex scanning or copying for either one. With those models, you scan two-sided originals one side at a time.

If you regularly scan contracts, medical paperwork, or tax documents, this feature alone can justify the price difference. You can scan to email, a USB stick, a network folder, or cloud services such as Google Drive and Dropbox from touchscreen shortcuts.

Despite what some listings suggest, it is a full fax machine. It has a 33.6 Kbps modem, 500 pages of fax memory, PC fax, and internet fax. That still matters for medical, legal, and real estate offices.

Toner Cost Per Page: TN229 vs. TN229XL vs. TN229XXL

The MFC-L3780CDW uses Brother's TN229 toner series in three yield sizes. Unlike the MFC-L3720CDW, MFC-L3765CDW, and HL-L3280CDW, it's on Brother's compatibility list for the super high-yield TN229XXL cartridges. That's an advantage for long-term costs.

The table below uses Brother's ISO/IEC 19798 yield ratings and genuine-cartridge list prices on brother-usa.com as of October 2026. Cost per page is the cartridge price divided by its rated yield.

Cartridge	Rated yield	Brother list price	Approx. cost per page
TN229BK (standard black)	1,500 pages	$79.79	5.3¢
TN229C (standard color, each)	1,200 pages	$84.99	7.1¢ per color
TN229XLBK (high-yield black)	3,000 pages	$96.29	3.2¢
TN229XLC (high-yield color, each)	2,300 pages	$123.49	5.4¢ per color
TN229XXLBK (super high-yield black)	4,500 pages	$128.29	2.9¢
TN229XXLC (super high-yield color, each)	4,000 pages	$161.29	4.0¢ per color

What that means in practice:

Black pages: Moving from standard to XXL black toner cuts the cost of a text page from about 5.3¢ to about 2.9¢, almost half.
Color pages: A color page uses black plus all three colors. If each color cartridge is priced like the cyan, a full-color ISO page costs roughly 27¢ with standard cartridges, 19¢ with XL, and 15¢ with XXL at genuine prices. That's why standard-yield color toner is the biggest cost complaint with this class of printer.
The starter cartridges in the box are rated at about 2,300 pages black and 1,200 pages per color, so most offices won't buy toner for the first few months.

Compatible TN229-series cartridges cost much less than genuine and lower these numbers further. See Shop Compatible Toner at Castle Ink below, or read our full guide, What Toner Does the Brother MFC-L3780CDW Use?

Drum, Belt and Waste Toner Box

Toner isn't the only consumable. Brother rates the parts that ship with the MFC-L3780CDW as follows:

DR229CL drum unit: About 20,000 pages at 1 page per job, or about 30,000 pages at 3 pages per job. Short jobs wear the drum faster, so offices that print lots of single pages should expect the lower number.
BU229CL belt unit: About 50,000 pages.
WT229CL waste toner box: About 50,000 pages.

Each toner cartridge sits in a drum unit, and the two come out together. You'll replace toner far more often than the drum, and at a few hundred pages a month many owners will never replace the belt or waste toner box.

MFC-L3780CDW vs. MFC-L3720CDW vs. MFC-L3765CDW vs. HL-L3280CDW

These four Brother models use the same TN229 toner family and the same type of LED engine, and they're often compared side by side (the MFC-L3780CDW vs. MFC-L3720CDW question comes up a lot on Reddit). Here's what you actually get as you move up the line, based on Brother's spec pages:

Feature	HL-L3280CDW	MFC-L3720CDW	MFC-L3765CDW	MFC-L3780CDW
Functions	Print only	Print, copy, scan, fax	Print, copy, scan, fax	Print, copy, scan, fax
Print speed	Up to 27 ppm	Up to 19 ppm	Up to 27 ppm	Up to 31 ppm
Two-sided printing	Yes	Yes	Yes	Yes
Two-sided scan/copy	No scanner	No	No	Yes, single-pass
ADF	None	50 sheets	50 sheets	50 sheets
Manual feed	1 sheet	1 sheet	1 sheet	30-sheet MP tray
Display	2.7" screen	3.5" touchscreen	3.5" touchscreen	3.5" touchscreen
Wired Ethernet	Yes	Not listed (Wi-Fi + USB)	Gigabit	Gigabit
NFC badge reader	No	No	No	Yes
Recommended monthly volume	Up to 3,000	Up to 3,000	Up to 3,000	Up to 4,000
Starter toner (black / each color)	Not verified	1,000 / 1,000	3,000 / 1,000	2,300 / 1,200
TN229XXL compatible	No (TN229/XL)	No (TN229/XL)	No (TN229/XL)	Yes
Brother list price	Varies	$459.99	$499.99	$569.99

Which One Should You Buy?

HL-L3280CDW: If you never scan or copy. Our Brother HL-L3220CDW review covers another print-only TN229 option.
MFC-L3720CDW: Fine for light use, but slow at 19 ppm and no wired Ethernet listed.
MFC-L3765CDW: The middle option: 27 ppm and Gigabit Ethernet, but one-sided scanning.
MFC-L3780CDW: Worth the extra $70 to $110 if you want single-pass two-sided scanning, the 30-sheet multipurpose tray, NFC badge release, or XXL toner.

If you've outgrown all four, Brother's MFC-L8395CDW is a bigger business model in the same family. It also takes TN229XL and TN229XXL toner.

Alternatives From HP and Canon

If you're open to other brands, these two color all-in-ones compete directly with the MFC-L3780CDW:

Feature	Brother MFC-L3780CDW	HP Color LaserJet Pro MFP 3301fdw	Canon Color imageCLASS MF656Cdw
Print speed	Up to 31 ppm	Up to 26 ppm	Up to 22 ppm
ADF	50 sheets, single-pass duplex	50 sheets, single-pass duplex	50 sheets, two-sided scanning
Paper input	250 + 30-sheet MP tray (expandable to 500)	250 + 1-sheet priority slot (no add-on tray)	250 + 1-sheet bypass
Display	3.5" touchscreen	4.3" color touchscreen	5" display
Fax	Yes	Yes	Yes
Toner	TN229 / XL / XXL	HP 218A / 218X	Canon 067 series
Third-party toner	Brother says firmware doesn't block it	HP "dynamic security" may block non-HP chips	Check before buying

HP Color LaserJet Pro MFP 3301fdw

This is the closest match. It also scans both sides in a single pass, and it has a larger 4.3-inch touchscreen. It's a bit slower, it can't take a second paper tray, and its high-yield 218X toner is rated at about 3,200 pages for black and 2,500 per color, which is less than Brother's TN229XXL. The bigger issue for anyone who buys compatible toner: HP's own product page says the 3301fdw is a dynamic-security-enabled printer that "may prevent cartridges with non-HP chips or circuitry from working now or in the future," and that firmware updates can block cartridges that previously worked. See our guide to HP Color LaserJet Pro MFP 3301 toner.

Canon Color imageCLASS MF656Cdw

Canon's long-running small-office model handles two-sided scanning through its 50-sheet feeder. At 22 ppm it's the slowest of the three, and its starter cartridges are small (about 1,350 pages black and 680 per color). It's a reasonable budget pick if speed and long-term toner costs matter less to you than the upfront price.

Setup, Brother Mobile Connect and Refresh EZ Print

Getting Started

At about 48 pounds, plan on two people to unbox it. Remove the shipping tape and packing pieces, make sure the drum and toner assemblies are seated, load paper, and follow the touchscreen prompts to join Wi-Fi or plug in Ethernet. Install drivers from Brother's support site, or use the Brother Mobile Connect app to finish setup and print or scan from your phone. AirPrint and Mopria handle basic printing without extra software.

Refresh EZ Print Subscription

Brother will offer you its Refresh EZ Print toner subscription during setup. According to Brother, the free trial includes 1,000 bonus pages if you enroll within 7 days of first powering on the printer. The plan is month-to-month, overage fees apply, and it's only available in the contiguous US. One important detail: Brother says subscription cartridges are deactivated if you cancel. A subscription can work well if your page count is steady and predictable. If you'd rather own your toner outright or use compatible cartridges, you can skip it without losing any printer features.

Compatible Toner and Firmware Updates

This is a fair question to ask before buying any Brother laser or LED printer. In early 2025, right-to-repair advocate Louis Rossmann publicly claimed that Brother firmware updates were degrading features, such as automatic color registration, on some models that used third-party toner. Brother denied it, saying that "Brother firmware updates do not restrict the use of third-party cartridges" and that its printers "do not distinguish between genuine and non-genuine cartridges." Brother also says it can't vouch for the quality of non-Brother supplies and recommends genuine toner.

Our practical advice:

Buy compatible cartridges from a seller who stands behind them, so a cartridge that isn't recognized gets replaced without an argument.
Make firmware updates a deliberate decision. Check the update options in the printer's settings. Updates can include security fixes, so don't skip them forever, but install them on your schedule.
Keep one spare cartridge on hand, especially black, so a recognition problem never stops your office.
If a new cartridge isn't recognized, reseat it firmly in the drum unit, power the printer off and back on, and contact your toner supplier before changing any settings.

Compared with printers that are designed to block non-original chips, like the HP model above, Brother remains one of the friendlier brands for lower-cost toner.

Common Problems and Fixes

Brother's online user guide for the MFC-L3700 series lists these as the messages owners see most. Here's what they mean and what Brother recommends:

Toner Low: The cartridge is close to empty, but you can keep printing. Order a replacement now.
Replace Toner: Printing stops. Replace the cartridge for the color shown on the screen.
No Toner or Cartridge Error: The cartridge usually isn't seated correctly. Remove the toner and drum assembly for that color, push the cartridge firmly into the drum unit until it locks, and reinstall it. If the error continues, try another cartridge.
Drum End Soon / Replace Drum: The drum is close to the end of its life or past it. If "Replace Drum" stays on after you install a new drum, reset the drum counter from the printer menu.
Calibration or Registration failed: Turn the printer off, wait, turn it back on, and run color calibration or registration again from the touchscreen. If it keeps failing, Brother says the belt unit may need replacing.
Paper jams (Jam Inside, Jam Rear, Jam Tray, Jam 2-sided, Jam MP Tray): Open the area named on the screen, pull the paper out gently in the direction it travels, and reinstall any assemblies you removed. Fan your paper and don't overfill the tray to prevent repeat jams.

Streaks or repeating marks usually point to a drum unit that needs cleaning or replacing; Brother's online user guide has step-by-step print-quality troubleshooting. Wi-Fi drop-offs are often fixed by reserving the printer's IP address on your router or switching to Ethernet.

Who This Printer Is For

Small offices and home businesses printing up to Brother's recommended 4,000 pages a month
Anyone who scans or copies two-sided documents often: accountants, medical and legal offices, real estate agents
Offices that still fax
Shared workplaces that want NFC badge release or Secure Print
Buyers who want the lowest toner cost in this Brother family via TN229XXL

Who Should Skip It

Light home users printing a few pages a week: a cheaper inkjet or the HL-L3280CDW makes more sense.
People who never scan both sides: the MFC-L3765CDW gives you most of the same printer for less.
Photo printers: any LED or laser printer is the wrong tool for glossy photos.
Tight spaces: at roughly 16 x 18 x 16 inches and almost 48 pounds, it needs a solid stand or a sturdy desk.

Frequently Asked Questions

Is the Brother MFC-L3780CDW a good printer?

Yes, for small offices and busy home offices. It's fast (31 ppm), scans both sides of a page in one pass, and has low running costs with high-yield toner. It's more printer than a light home user needs, though.

Is the Brother MFC-L3780CDW a laser printer?

Not technically. It uses an LED print engine, and Brother calls it a "digital color" printer with laser-quality output. It works like a laser printer, using toner, a drum, and a heat fuser, so most people treat it as one.

What does CDW mean on Brother printers?

In Brother's model names, "C" generally means color, "D" means automatic duplex (two-sided) printing, and "W" means wireless. So the MFC-L3780CDW is a color, duplex, wireless all-in-one ("MFC" is Brother's prefix for multifunction models with fax).

What are the common problems with Brother printers?

The most common issues are toner not recognized or "No Toner" errors (usually a cartridge not seated correctly), paper jams, drum warnings that stay on after a drum change until the counter is reset, and color calibration or registration errors. Most of these can be fixed in a few minutes. See our Common Problems and Fixes section above.

What toner does the MFC-L3780CDW use?

It uses Brother TN229 toner in standard (TN229), high-yield (TN229XL), and super high-yield (TN229XXL) sizes, in black, cyan, magenta, and yellow. Brother rates them at 1,500 / 3,000 / 4,500 pages for black and 1,200 / 2,300 / about 4,000 pages per color.

What's the difference between the MFC-L3780CDW and the MFC-L3720CDW?

The MFC-L3780CDW is much faster (31 vs. 19 ppm) and adds single-pass two-sided scanning and copying, Gigabit Ethernet, a 30-sheet multipurpose tray, an NFC reader, and TN229XXL toner support. The MFC-L3720CDW costs about $110 less at Brother's list price.

Can I use compatible toner in the MFC-L3780CDW?

Yes. Brother has publicly said its firmware updates don't restrict third-party cartridges. Buy from a seller that guarantees its cartridges, and be thoughtful about when you install firmware updates.

Do I need to replace the drum when I replace the toner?

No. The DR229CL drum is rated for about 20,000 to 30,000 pages depending on job size, so it lasts through many toner changes. You only move the toner cartridge into the existing drum unit.

Bottom Line

The Brother MFC-L3780CDW is the one to buy in Brother's MFC-L3700 family if scanning matters to you. Single-pass two-sided scanning, 31 ppm printing, a real multipurpose tray, and TN229XXL toner support make it a capable small-office machine that costs less to run than its siblings over time. If you rarely scan both sides of a page, save money with the MFC-L3765CDW, and if you never scan at all, a print-only HL model is the better value. Either way, high-yield or compatible toner is the easiest way to keep color pages affordable.

Where to Buy

The MFC-L3780CDW is sold at Brother, major office-supply stores, and Amazon, and prices change often, so compare before you buy.

Check current price on Amazon

Shop Compatible Toner at Castle Ink

Castle Ink is a family-run toner store in Greenlawn, New York, and we've been selling compatible cartridges since 2005. We stock compatible TN229-series toner for the MFC-L3780CDW at every yield level, priced well below genuine Brother cartridges:

Value sets: TN229XL high-yield 4-pack (black, cyan, magenta, yellow) and TN229 standard-yield 4-pack
Super high-yield TN229XXL singles (MFC-L3780CDW only in this family): TN229XXLBK black, TN229XXLC cyan, TN229XXLM magenta, TN229XXLY yellow
High-yield TN229XL singles: TN229XLBK black, TN229XLC cyan, TN229XLM magenta, TN229XLY yellow
Standard TN229 singles: TN229BK black, TN229C cyan, TN229M magenta, TN229Y yellow

Most offices get the best value from XXL black, since black runs out first, paired with XL or XXL colors. You can also browse our full Brother toner cartridges collection.