HP DesignJet T850 Ink Cartridges
Shop ink cartridges for your HP DesignJet T850, which uses the HP 738 ink cartridges series. Ink Depot has been supplying reliable consumables for this printer since Aug 2024. As a 36-inch large-format plotter built for architectural plans and technical drawings, dense line work consumes black 738 (498P2A) ink faster than colour channels like cyan 738 (498N5A). Our 4.8 Google rating proves it: we consistently supply premium cartridges backed by rock-solid reliability.
Expected Page Output for Large-Format Printing
HP measures ink yields under ISO/IEC standards for document printing, though wide-format CAD plotters consume ink based on line density and solid fill area rather than standard page coverage percentages. High-density GIS maps will deplete colour cartridges much faster than monochrome architectural blueprints.
Selecting the Right Cartridges and Bundle Packs
If you produce primarily monochrome architectural plans, stocking up on individual black 738 (498P2A) cartridges keeps single-line printing economical. If you print multi-colour renders and GIS maps, purchasing full four-colour multipacks balances ink replacement cycles. All items are covered by our standard returns policy. We dispatch directly from local warehouses in Perth, Brisbane, Sydney, Melbourne and Adelaide. Free delivery applies on all orders over $99 when ordering your genuine HP ink cartridges.
Pro Tip
Large-format printheads require continuous ink flow during automated maintenance cycles; leaving empty 738 cartridges in the plotter can cause micro-nozzle drying, so always keep spare black 738 (498P2A) and colour cartridges on hand before starting extensive plot runs.
Frequently Asked Questions
How do line drawings and full-colour renders affect HP 738 ink depletion rates?
Technical line drawings primarily use black 738 (498P2A) ink, resulting in black running out much faster than colour cartridges. Full-colour CAD renders, GIS maps, and presentation banners draw evenly across cyan 738 (498N5A), magenta 738 (498N6A), and yellow 738 (498N7A), requiring balanced multi-pack replacements.
Can I install individual HP 738 cartridges as they run out, or do I need to replace all colours simultaneously?
You can replace HP 738 cartridges individually as each colour depletes. The HP DesignJet T850 tracks ink levels per cartridge, allowing you to run each colour completely low without interrupting remaining ink channels.
Why does large-format plotter ink usage differ from standard office inkjet cartridges?
Wide-format plotters consume ink over much larger surface areas (up to A0/36-inch width) and perform automated printhead maintenance to prevent nozzle clogging during downtime. This maintenance draws small ink amounts from all 738 channels even during purely monochrome plot jobs.
