Keep printers running smoothly — understand the consumables and maintenance each printer type needs, the costs to expect, and the routine care that prevents costly downtime.
19 min read · Printer Maintenance & Consumables
// CHECK YOUR KNOWLEDGE
Printers are relatively simple devices, but they do require upkeep. The previous lesson covered how different printer types work; this one focuses on what they need to keep working well: the consumables you'll replace regularly, the maintenance kits that extend hardware life, and the service schedules that prevent failures. Understanding consumables is essential for support and troubleshooting — and for budgeting total cost of ownership.
Laser printers are workhorses, but they have more wear parts than other types. The key consumables are toner and the maintenance kit (also called the kit or service kit).
Toner cartridges hold the fine powder that the laser fuses onto paper. They come in different capacities (standard, high-yield, extra-high-yield) — higher capacity means more pages per cartridge and lower cost per page, but a larger upfront cost. When toner runs low, the printer either stops or warns the user, depending on configuration.
Maintenance kits are replacement packs containing the components that wear out over time:
Manufacturers publish expected page yields for each component, and printers often track page counts or usage metrics. Replacing these parts on schedule is cheaper than a breakdown, which can mean the printer sits offline for days and loses productivity.
▸ COMPAT
Compatibility rule — maintenance kits: A laser printer's maintenance kit is brand and model-specific. You can't use a kit from one manufacturer in a different brand's printer, and even kits between models from the same maker may not fit. Always order the correct kit for the exact printer model.
Inkjet printers are cheaper up front but have higher per-page costs and different maintenance needs.
Ink cartridges are the main consumable. They come in individual colors (cyan, magenta, yellow, black) or as multi-packs. Some printers use smart cartridges that communicate with the printer to prevent counterfeit or refilled cartridges; others don't. Cartridge cost varies widely, and high-volume users often prefer continuous ink supply systems (CISS) — external tanks that feed the printer — which lower per-page cost but require more setup.
Cleaning cycles push fresh ink through the nozzles to prevent clogs (a common problem if the printer sits unused for weeks). Running too many cleaning cycles consumes ink rapidly, which can be costly and counterproductive if it's just delaying a real problem. If a nozzle is permanently clogged, a cleaning cycle alone won't fix it.
Calibration periodically aligns colors and adjusts print head position. Many inkjets run this automatically when you install a new cartridge or manually on demand if colors drift or alignment looks off.
▸ NOTE
Mental model: Inkjet maintenance is about avoiding clogs and keeping colors aligned. The trade-off is simple — ink is cheap per cartridge but expensive per page, and the printer itself is cheap because the margins are in supplies.
Thermal printers are low-maintenance because there's no toner, ink, or complex mechanics — but they have one critical requirement: thermal paper.
Thermal paper is specialty stock coated with a chemical that darkens when heat is applied. Standard office paper won't work in a — it won't print at all. Thermal paper comes in rolls (for receipt printers, label printers) or sheet form (for shipping label printers). It's also temperature-sensitive: storing it in heat or direct sunlight will darken it and degrade the image. Thermal printer output is highly prone to fading and degradation — heat, friction, light, and moisture all break it down over time (a thermal receipt left somewhere hot can darken completely). This is why thermal output isn't suitable for long-term or archival documents. (Some specialized thermal shipping labels add protective coatings, but standard receipt paper does not.) Many places use thermal printers for receipts and shipping labels because the printer itself is simple and reliable, not because the output is archival.
That's the only consumable to manage with thermal printers — no cartridges, no toner, no maintenance kits. Once you have the paper supply sorted, the device runs almost indefinitely.
Impact printers (dot-matrix) are rare today, but when they do appear in legacy systems, they need specific supplies.
Ribbon is an ink-impregnated fabric (nylon) that the pins strike. It sits in a cartridge and runs in a continuous loop, advancing as the head moves. As it wears, the ink depletes — the telltale sign that it's time to replace the ribbon is print that gradually fades rather than abruptly stopping. Ribbons are replaceable and relatively cheap.
Tractor-feed paper (or pin-feed paper) has perforated holes along the edges that grip the tractor wheels on the printer. Standard office paper has no holes and won't feed reliably. Forms with carbon copies (for invoices, shipping docs, multi-part receipts) are printed on tractor-feed paper because the 's mechanical strike presses through all layers at once.
Impact printers rarely need anything else — no fuser, no cartridge alignment, no nozzle cleaning. The mechanics are simple and built to last, which is why they're still used in warehousing and shipping despite being decades old.
3D printers extrude plastic filament (usually PLA or ABS) and build objects layer by layer. The consumable is the filament itself, sold on spools by weight and color.
Filament types vary in temperature requirements, strength, flexibility, and ease of use:
Nozzle temperature, bed temperature, print speed, and support density all affect print quality and filament usage. Unlike a laser or inkjet, 3D printer maintenance is mostly preventive — keeping the nozzle clear, leveling the bed, and checking filament diameter so the feeder extrudes the right amount. Failed prints waste filament, so getting settings right saves money.
Beyond consumables, every printer benefits from basic care:
▸ EXAM TIP
Exam tip: The A+ exam expects you to know which consumables belong to which printer type and the rough replacement schedule. You don't need to memorize exact page yields, but you should know that laser fuser packs contain multiple parts and last tens of thousands of pages, while thermal printers just need paper, and inkjet cartridges run out much faster than toner.
When choosing a printer for an environment, consider not just the hardware cost but the total cost of ownership (TCO) over its useful life:
The check questions below will test your knowledge of consumables, maintenance, and the practical trade-offs between printer types.
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