Clever Supplies brand products are made in the USA! Why pay more for cheaper product with a high defective rate? You will end up having to send it back to the manufacturer. Your time is valuable. Get a quality product that you KNOW will work. Purchase the Clever Supplies Compatible for Kyocera-Mita TK542 (TK542K) 2 Black Toner Cartridges and experience the difference! All Clever Supplies brand products are backed by '100% Quality Satisfaction' 1 year warranty against defects in materials and workmanship for all toner products. Free tech support for any problems for all Clever Supplies brand products. The use of Clever Supplies brand replacement laser toner cartridges and supplies does not void printer warranty. Premium Quality Replacement Toner Cartridge is made by ISO9001 Certified Factory to Meet or Exceed OEM Standards. These units are manufactured 100% brand new with all new parts including OPC drums, wiper blades, a smart chip and other internal parts, they are an economical alternative to expensive OEM TK542K Compatible Toner Cartridges. The Compatible Toner Cartridges will produce the same amount of page yield as an OEM cartridge would. This is a Compatible for Kyocera-Mita TK542 Toner Cartridges guaranteed to perform with Kyocera-Mita Laser Printers. It replaces the original Kyocera-Mita TK542 Black. The use of compatible replacement Cartridges and supplies does not void Printer Warranty. Our Compatible for TK542K. Cartridge is a replacement for OEM Kyocera-Mita. We offer a 100% Quality Satisfaction Guarantee on our Compatible for TK542K Laser Toner Cartridges and supplies. For use in the following printers: FS-5100DN, FS-C5100, FS-C5100DN
Frequently Asked Questions
How can I be sure this is the black cartridge and not one of the colors?
Check the code on the label: both cartridges in this pack are TK542K, and the K code is always the black in this family. The cyan, magenta and yellow cartridges carry their own codes — TK542C, TK542M and TK542Y — so a two-pack of TK542K contains nothing but two blacks.
Why does the black slot empty long before the colors do?
On a printer that mostly produces letters, invoices and reports, almost every page draws on black while the colors sit nearly untouched. That is the whole reason black is sold on its own in pairs like this: the TK542K is rated at 5,000 pages per cartridge, and text-heavy printing works through that rating steadily while a set of colors can last far longer.
Can I swap the black in the middle of a print job?
Yes. Pause the job on the FS-C5100DN, open the cover, exchange only the black cartridge and resume. The three color cartridges are not disturbed, and the job continues from where it stopped.
Where should the second cartridge wait while the first one is in the printer?
On a shelf, still sealed in its packaging, lying flat and out of direct sunlight. There is nothing to top up or maintain — an unopened cartridge simply waits until the installed one runs down, which makes this pack an easy way to keep a spare within reach.
The cartridge I just fitted is printing light gray instead of solid black. What fixes it?
Take it out and rock it gently from side to side a few times to redistribute the toner inside, then refit it until it seats with a click. If the seal was not fully removed before fitting, that can starve the print as well, so confirm the strip came away completely.
What cover do the two cartridges carry?
Each one is covered by a 1-year warranty with 1-year free returns under our shipping & returns policy. The cover follows the individual cartridge, so the second unit is protected from the day you buy the pack, not from the day you eventually install it.
How can I pace the pair using the printer's own readings?
Each TK542K is rated at 5,000 pages, so the printer's page counter tells you roughly where you stand: note the counter when a cartridge goes in and you can estimate the pages left before it fades. With two cartridges the pair represents about 10,000 pages at standard coverage — enough to translate your monthly volume into a rough calendar for when the second cartridge will be needed.
When the first cartridge of the pair comes out, what should I do with it?
Put it back into the sleeve or box the fresh cartridge came out of and send it to a toner recycling collection point with your next batch of office recyclables. There is no value in keeping a spent unit once the replacement is printing solid black, and sealing it in the packaging keeps any residual toner dust off desks and shelves in the meantime.
The second cartridge has waited months on the shelf. Is there anything to check before fitting it?
Two quick things: confirm the packaging is still sealed and the protective strip is intact, and check the label still reads TK542K so the black slot gets the right cartridge. Then, as with any cartridge that has sat still, rock it gently from side to side before fitting so the settled toner redistributes — that one habit prevents the pale first pages a long-stored cartridge can otherwise produce.
Once the second cartridge goes in, the shelf is empty. When should I reorder?
That is the moment. While the first cartridge is working, the sealed spare is your safety net; the day it is fitted, the net is gone and the printer is running on its last cartridge. Ordering the next pack then — rather than waiting for the low-toner warning on the second unit — keeps the swap-two-minutes rhythm this pack is built around and avoids any delivery gap.
About This TK542K Two-Black Pack
Think of this as the working spare for a black slot that never gets a rest: two TK542K black cartridges, each rated at 5,000 pages, priced together at $73.95. One goes straight into the printer and the other waits sealed in the supply drawer, so the next low-toner warning is a two-minute swap instead of a wait for a delivery. It belongs to our compatible Kyocera-Mita range; orders ship from our warehouses in IL, PA, GA and CA, and support is available Monday to Friday, 9 AM to 5 PM CST.
See Compatible Printers
Read more about our ink!
