Canon S35

Two names, one shelf of toner. This page covers the cartridge Canon sold as S35 (7833A001AA) and as FX8 (8955A001AA) — the black toner for the imageCLASS D series (D320, D340, D380 and their kin), the LASER CLASS fax machines and the FAXPHONE line listed below. Whichever name is printed on your old cartridge, you are in the right place: the S35 listings and the FX8 listings here serve the same family of machines, in pack sizes from a single cartridge to a 10 pack.

This is a fax-era platform, and that shapes who buys this toner now: medical and law offices that still run a dedicated fax line, service counters with a LASER CLASS workhorse, and home offices keeping a D-series machine for copies and scans. Those machines are long past their launch parties but stubbornly alive, and their owners share one need — a cartridge they can still order without a treasure hunt, under either of the two names Canon gave it.

Canon S35 and FX8 Toner Cartridges

Ordering under either name

Match the name on your old cartridge if it helps you order with confidence — S35 (7833A001AA) if that is what is printed on yours, FX8 (8955A001AA) if yours says FX8. Then pick a quantity by how the machine earns its keep: a single or the 2 pack for a home office, a 5 pack for a working fax line, and the S35 10 pack for offices that support several of these machines and would rather stock deep once than reorder all year. There is also a Canon FX8 page if you arrived by that name first.

Keeping a fax-era machine printing

Machines of this vintage reward simple habits. Keep the spare cartridge sealed in its bag — aged toner in an opened box is the first suspect when an old machine prints light. Slide a fading cartridge out and rock it gently to redistribute what remains before you replace it. And set yield expectations by the rating standard: figures assume 5 percent coverage, while faxed forms and copied documents often run denser. Every compatible S35 and FX8 listing on this page is covered by a one-year warranty and one-year returns.

Printers that use Canon S35 and FX8

The D series, LASER CLASS, FAX and FAXPHONE models that run on this cartridge: ImageClass D320, ImageClass D340, ImageClass D383, LaserClass 510, ICD-340, LaserClass 310, FaxPhone L170, FAX L360, FAX L380, FAX L380S, FAX L390, FAX L400, ImageClass D380, PCD320, PCD340, FAX L170, L400, FaxPhone L400, LBP-1210, ImageClass D323, ImageClass ICD340, ImageClass L170, ImageClass L400, ImageClass PC-D320, ImageClass PC-D340, ImageClass D300.

Frequently Asked Questions

Are S35 and FX8 the same cartridge?

They are Canon's two names for the toner family serving the machines listed above — S35 carries part number 7833A001AA and FX8 carries 8955A001AA. If your machine is in the family list, either range on this page is stocked for it; most buyers simply order under the name printed on the cartridge they are replacing.

My cartridge says FX8. Why does this page headline S35?

Because Canon marketed the family under both names and searchers arrive by either. The FX8 listings are in the table above alongside the S35 ones, and there is a dedicated Canon FX8 page as well.

Does the LASER CLASS 510 take this toner?

Yes. The LASER CLASS 310 and 510 are in the family list above, along with the FAX L-series and FAXPHONE models — all run on the S35/FX8 family stocked here.

Who buys the 10 pack?

Offices and support providers keeping several D-series or LASER CLASS machines alive. One deep stock of the shared cartridge covers every machine in the family, and the per-cartridge effort of reordering disappears for the year.