WF-3540 Series Laser Toner Cartridges

WF-3540

Epson WorkForce WF-3540 printer

The WorkForce WF-3540's own Epson specification lists both tiers by code — 126 High Capacity (T126120 black at about 385 pages; colors at about 470 each) and 127 Extra High Capacity (black at about 945 pages; colors at about 755 each), ISO/IEC 24711, DURABrite Ultra pigment ink. The compatible cartridges below cover both tiers, chipped for the WF-3540 and covered by a lifetime warranty.

Cartridge	Type	Color	Approx. Yield
Epson T126120 (compatible)	High Capacity pigment ink cartridge	Black	385 pages
Epson T126220 (compatible)	High Capacity pigment ink cartridge	Cyan	470 pages
Epson T126320 (compatible)	High Capacity pigment ink cartridge	Magenta	470 pages
Epson T126420 (compatible)	High Capacity pigment ink cartridge	Yellow	470 pages
Epson 126 Set of 4 (compatible)	Full cartridge set	Black / Cyan / Magenta / Yellow	385 black, 470 per color
Epson 126 Set of 9 (compatible)	Bulk cartridge set (3 Black + 2 per color)	Black / Cyan / Magenta / Yellow	385 black, 470 per color
Epson T127120 (compatible)	Extra High Capacity pigment ink cartridge	Black	945 pages
Epson T127220 (compatible)	Extra High Capacity pigment ink cartridge	Cyan	755 pages
Epson T127320 (compatible)	Extra High Capacity pigment ink cartridge	Magenta	755 pages
Epson T127420 (compatible)	Extra High Capacity pigment ink cartridge	Yellow	755 pages
Epson 127 Set of 4 (compatible)	Full cartridge set	Black / Cyan / Magenta / Yellow	945 black, 755 per color
Epson 127 Set of 9 (compatible)	Bulk cartridge set (3 Black + 2 per color)	Black / Cyan / Magenta / Yellow	945 black, 755 per color

WorkForce WF-3540 Ink — The Defining Specification Sheet

Two tiers fit the WF-3540, and Epson's own specification separates them by code. In the 126 tier, black T126120 is rated at about 385 pages, while cyan T126220, magenta T126320 and yellow T126420 run to about 470 pages each. Step up to 127 and black T127120 reaches up to 945 pages, with cyan T127220, magenta T127320 and yellow T127420 at up to 755 pages each, all measured to ISO/IEC 24711. Those 126 figures are not a rounding error against the family's 415 black / 440 color cartridge-page ratings: the cartridge pages rate the cartridge on its own, this printer's specification rates it inside the WF-3540, and both sets are Epson's, printed here unblended.

The WF-3540’s single-sheet specification (CPD-37052) is the document the 126 family’s published ratings rest on: its ~385-page black and ~470-page color figures for the 126 are quoted across this platform wherever Epson speaks precisely. When a cartridge page elsewhere rounds those to 415/440, both numbers are Epson’s — this page prints the specification’s own, because this is the printer they were measured on.

Which 126/127 should you buy?

126 singles, one slot at a time: replace only the empty position — black, cyan, magenta and yellow singles are $8.99 each, for topping up the 126 tier one tank at a time.
126 full refresh: the Set of 4 ($29.94) covers all four 126 positions in a single box — handy when several tanks are low together.
126 stock for the shelf: the Set of 9 ($59.94) holds three blacks plus two of each color — backup kept ready for a WorkForce that prints every day.
127 singles, one slot at a time: replace only the empty position — black, cyan, magenta and yellow singles are $10.49 each, for stretching the longer 127 tier between full changes.
127 full refresh: the Set of 4 ($40.44) covers all four 127 positions in a single box — the longer-running refresh for heavier print weeks.
127 stock for the shelf: the Set of 9 ($74.93) holds three blacks plus two of each color — a deeper reserve for nonstop document work.

Chip, ink and everyday use

A new compatible chip sits on every cartridge here, and it deserves careful handling: hold the tank by its edges and never touch the green chip contact, since a smudged contact is a common cause of recognition complaints. Judge yields by the same standard this page uses — some compatible listings promise far more pages than Epson ever published, while every figure above is Epson's own, measured to ISO/IEC 24711. The ink is DURABrite Ultra pigment, and spares keep best sealed in their packaging until the day they are installed.