FAX-2845
This page is the full supply shelf for the Brother FAX-2845, the 21 ppm laser fax that sends Super G3 faxes at 33.6 kbps, holds 400 pages in fax memory and feeds originals through a 20-sheet ADF over USB. Its running supplies are the TN420 standard-yield toner (about 1,200 pages) and the TN450 high-yield toner (about 2,600 pages), paired with the DR420 drum unit (about 12,000 pages). Unlike most pages in this family, this one stocks both compatible and genuine Brother OEM versions side by side.
That breadth is the point of this listing. A FAX-2845 usually sits in a small office where one person orders supplies and cannot afford a wrong box: here the compatible singles and multi-packs, the toner-and-drum sets, and the genuine Brother cartridges and bundles are all laid out in one table, so the choice is made on yield and brand preference rather than on hunting across pages. Duplex printing, when it is needed, is manual through the driver — the machine itself is a straightforward single-sided worker built for fax traffic first.
Toner Cartridges for FAX-2845
Drum unit for this machine
The drum is a separate consumable from the toner. Sold on this page: Brother DR420 Black Genuine OEM Drum Unit — 12,000 pages. Compatible DR420 drums also reach this shelf as part of the toner-and-drum sets in the table above.
Which cartridge should you buy?
Decide in two steps. First, yield: the TN420's roughly 1,200 pages suit a fax that handles a few documents a week, while the TN450's roughly 2,600 pages cut cartridge changes by more than half on a busy line and lower the cost of every page. Second, brand: the compatible listings match the genuine fit and yields at a lower shelf price, while the genuine Brother rows are there for offices that standardize on OEM supplies. When the machine's page count is closing on 12,000 since the last drum, skip the toner-only rows and take one of the drum-and-toner sets — it replaces both wear parts in one order and one opening of the machine.
Chip, toner and everyday use
Every cartridge here, compatible or genuine, carries the chip the FAX-2845 reads for recognition and toner gauging; a cartridge the machine refuses is almost always one that was not seated fully, so push until the assembly clicks home. Received faxes are the first thing to suffer when toner runs low — pages arrive pale before the machine warns you — so treat faded incoming faxes as the low-toner signal and swap early. Keep one spare toner in the drawer the machine sits on; the 400-page memory will hold what arrives while you change it, and nothing is lost.
Frequently Asked Questions
Which toner does the FAX-2845 take?
The TN420 standard-yield cartridge (about 1,200 pages) or the TN450 high-yield cartridge (about 2,600 pages). Both fit the same machine; the difference is how much toner is in the box.
Does this page sell genuine Brother cartridges as well as compatibles?
Yes. This is one of the few pages in the family that stocks both: compatible TN420, TN450 and drum-and-toner sets, plus genuine Brother OEM toner, drum and bundle listings — each row in the table says which it is.
Why are there two TN450 2-pack listings?
The same compatible 2-pack is listed twice in the catalog. Both listings are the same product at the same specification; order either one.
When should I buy a drum-and-toner set instead of toner alone?
When print quality stays poor after a fresh toner cartridge, or the machine's count since the last drum change approaches the DR420's roughly 12,000-page life. The set replaces the wear part that is actually failing instead of feeding more toner into it.
More printers that use the same cartridges
The models below run on this same TN420/TN450 and DR420 pairing: Brother-TN330, Brother-TN360, Brother-TN420, Brother-TN450, DCP 7040, DCP-2240D, DCP-2270DW, DCP-7030, DCP-7040, DCP-7045, DCP-7045N, DCP-7055, DCP-7057, DCP-7060, DCP-7060D, DCP-7060DN, DCP-7065, DCP-7065DN, DCP-7070DW, FAX 2840, FAX 2845, FAX 2940, HL-2120, HL-2125, HL-2130, HL-2132, HL-2135W, HL-2140, HL-2150, HL-2150N, HL-2170, HL-2170W, HL-2220, HL-2230, HL-2230D, HL-2240.
The rest of the family: HL-2240D, HL-2242, HL-2242D, HL-2250, HL-2250DN, HL-2270, HL-2270DW, HL-2275, HL-2275DW, HL-2280, HL-2280DW, Intellifax 2840, Intellifax 2940, Intellifax-2840, Intellifax-2940, MFC-7040, MFC-7240, MFC-7320, MFC-7340, MFC-7345, MFC-7345DN, MFC-7345N, MFC-7360, MFC-7360DN, MFC-7360N, MFC-7365, MFC-7365DN, MFC-7440, MFC-7440N, MFC-7460, MFC-7460DN, MFC-7470D, MFC-7840, MFC-7840N, MFC-7840W, MFC-7860, MFC-7860DW.