HP 738 Ink Cartridges
HP 738 ink cartridges deliver precise line accuracy and consistent shade rendering for technical CAD drawings and wide-format plans on DesignJet printers. Available in individual black, cyan, magenta, and yellow cartridges alongside 4-pack and 8-pack bundles, these genuine formulations prevent nozzle clogging during extended print runs. Our 4.8 Google Star rating shows that our customers consistently receive high-quality cartridges backed by reliable performance.
Printers Compatible with HP 738 Ink Cartridges
Page Yield Expectation & ISO Standards
Page yields for HP 738 wide-format cartridges are measured under ISO/IEC 24711 and ISO/IEC 19752 testing standards based on continuous printing. Real-world consumption fluctuates based on line density, solid colour fills, automatic printhead maintenance cycles, and paper width.
Managing Cartridge Replacement & Delivery Options
Technical printing depletes black ink faster than chromatic colours when producing line drawings, whereas architectural renders consume equal levels of cyan, magenta, and yellow. Purchasing 4-pack or 8-pack bundles reduces per-cartridge logistics expense and prevents downtime during multi-page plan sets. Free delivery applies on all orders over $99. Orders dispatch rapidly from state distribution centres in Perth, Brisbane, Sydney, Melbourne, and Adelaide. Review our full refund terms on our Returns policy page or explore the broader range of HP ink cartridges.
Pro Tip
When replacing an HP 738 cartridge on a DesignJet T850 or T950, perform the replacement while the printer remains powered on to allow internal sensors to recalibrate ink levels without running an unnecessary full-system priming cycle.
Frequently Asked Questions
Why do cyan, magenta, and yellow cartridges drain during monochrome CAD printing?
HP DesignJet plotters utilise micro-drops of colour ink during black-and-white vector printing to sharpen line edges and neutralise grey tones, while periodic automatic head cleaning draws small quantities from all channels to prevent nozzle drying.
Can I replace a single HP 738 cartridge without replacing the entire set?
Yes, each HP 738 cartridge operates independently, allowing individual colour replacement as individual channels reach exhaustion without interrupting active print jobs.
What happens if an HP 738 cartridge runs empty mid-plot?
DesignJet T850 and T950 plotters pause the current print job instantly when an ink level reaches absolute zero, holding the paper position until a new cartridge is inserted so the drawing completes without misalignment.
