CS-1820

The CS-1820 is a compact monochrome multifunction copier sold under the Copystar name — Kyocera's brand in the United States — and it is the same machine that Kyocera-badged offices run as the KM-1820. It works with a single black cartridge that answers to two names: TK-18 is the cartridge family name, while 370QB0KM is the part number stamped on the box. Everything stocked on this page is that one cartridge, offered as a single, as a standard five pack and as a premium five pack, so ordering starts with checking which of the two names your empty cartridge carries — either name leads to the same toner.

A one-cartridge machine keeps life simple for a small office or a home work area: there is exactly one supply to keep track of, and when the copies start to fade the diagnosis is already made. The CS-1820 usually sits close to the person who feeds it, handling the daily mix of copies, prints and scans for a handful of users. Offices that run it as a shared device tend to keep a multipack on the shelf so a toner change never waits on a delivery, while a single user working through one cartridge at a time can simply reorder the single as the low-toner warning appears.

Toner Cartridges for CS-1820

Cartridge	Color	Type	Page Yield
TK-18 (370QB0KM) Toner Cartridge Black	Black	Toner cartridge	See product page
TK-18 (370QB0KM) Toner Cartridges Black 5 Pack	Black	Toner cartridges, 5 pack	See product page
TK-18 (370QB0KM) Premium Quality Toner Cartridges Black 5 Pack	Black	Toner cartridges, 5 pack	See product page

Which cartridge should you buy?

All three listings are the same cartridge, so the choice is about quantity and grade rather than fit. The single suits a machine that sees light, occasional use and gives you a chance to confirm the cartridge in hand before committing to more. The standard five pack is the working choice for a shared copier: five cartridges arrive together, the shelf stays stocked through several toner changes, and nobody has to think about reordering until the last box is opened. The premium five pack holds the same five cartridges in the premium-quality grade of the line, for offices that want the higher-grade version in the same quantity. Whichever you pick, every compatible cartridge here is covered by a one-year warranty and one-year returns.

Chip, toner and everyday use

The cartridge is recognized by the copier as soon as it seats, so a swap takes a minute: open the front cover, slide the old unit out, give the new one a gentle side-to-side shake to loosen the toner, remove its protective strip and slide it in until it clicks. If copies come out light partway through a cartridge's life, taking it out and rocking it gently can redistribute the toner inside and carry you to the end of the week. Store spares flat, in their packaging, away from direct sunlight and heat. Because this machine has only one supply, keeping a single spare cartridge next to it is the cheapest insurance against a mid-job stop.

Frequently Asked Questions

Is the TK-18 the same cartridge as the 370QB0KM?

Yes. TK-18 is the cartridge family name and 370QB0KM is the Kyocera Mita part number for the same black cartridge. Listings here carry both names, and a cartridge ordered under either name will fit the CS-1820.

Will a cartridge bought for the KM-1820 work in my CS-1820?

It will. The CS-1820 and the KM-1820 are the same copier sold under Kyocera's two badges — Copystar in the United States and Kyocera elsewhere on the nameplate — and both take the TK-18.

Is there a separate drum unit I need to buy for this copier?

No drum unit is listed for the CS-1820 on this page. The TK-18 cartridge is the only supply stocked for the machine here, so a toner order is the whole order.

What is the difference between the standard and premium five packs?

Both boxes hold five TK-18 cartridges that fit the same machine. The premium pack is the premium-quality grade of the cartridge line; the standard pack is the regular grade. The fit, the quantity and the cartridge names are identical.