What Ink Does the HP Latex 315 Use?
Last Updated:Correction (October 2026): an earlier version of this guide said the Latex 315 uses four HP 831 printheads. It has six installed: two Cyan/Black, two Magenta/Yellow, one Light Cyan/Light Magenta and one Optimizer.
Quick answer: The HP Latex 315 uses seven HP 831 775 ml latex cartridges — Black, Cyan, Magenta, Yellow, Light Cyan and Light Magenta inks plus the HP 831 Latex Optimizer. The same cartridges fit the HP Latex 310. Castle Ink carries all seven remanufactured: HP 831 Black (CZ682A), HP 831 Cyan (CZ683A), HP 831 Magenta (CZ684A), HP 831 Yellow (CZ685A), HP 831 Light Cyan (CZ686A), HP 831 Light Magenta (CZ687A) and the HP 831 Latex Optimizer (CZ706A).
CastleScore · October 2026
64/100 — Situational
HP Latex 315
| Pillar (weight) | Score | What it is based on |
|---|---|---|
| Owner ratings (28%) | — | No retailer rating with enough reviews to use. |
| Expert reviews (18%) | — | No published numeric expert score we could verify. |
| Cost per page (24%) | — | Not scored: HP rates 831 latex ink by volume (775 ml), not page yield, so we cannot calculate an honest cost per page. |
| Reliability (13%) | 83 | Most-reported problems: light cyan/light magenta printhead drop-outs after a cartridge swap; printer must stay powered on for automatic printhead maintenance; colour shift that persists after printhead replacement |
| Features (12%) | 44 | Ethernet. No document feeder, no auto two-sided printing, no fax, no touchscreen. |
| Value (5%) | — | Running cost and owner satisfaction |
Limited data: We could not find enough owner ratings or published expert scores for this printer, so those weights are spread across the other pillars.
Discontinued. HP ended the Latex 300 series in October 2024 and replaced it with the Latex 630, 700 and 800 range. HP 831 ink, printheads and support continue.
CastleScore is Castle Ink’s own editorial rating, built from retailer star ratings, expert reviews, real cost per page and owner complaint patterns, checked October 11, 2026. It is not a customer review. See every ranked printer or how the score works.
The cartridges, pictured
HP 831 Black 775 mlCZ682A
HP 831 Cyan 775 mlCZ683A
HP 831 Magenta 775 mlCZ684A
HP 831 Yellow 775 mlCZ685A
HP 831 Light Cyan 775 mlCZ686A
HP 831 Light Magenta 775 mlCZ687A
HP 831 Black 775 ml
HP 831 Cyan 775 ml
HP 831 Magenta 775 ml
HP 831 Yellow 775 ml
HP 831 Light Cyan 775 ml
HP 831 Light Magenta 775 mlOur own remanufactured cartridges, photographed in-house.
HP Latex 315 Ink Cartridges at a Glance
| Cartridge (Castle Ink link) | Part No. | Size |
|---|---|---|
| HP 831 Black | CZ682A | 775 ml |
| HP 831 Cyan | CZ683A | 775 ml |
| HP 831 Magenta | CZ684A | 775 ml |
| HP 831 Yellow | CZ685A | 775 ml |
| HP 831 Light Cyan | CZ686A | 775 ml |
| HP 831 Light Magenta | CZ687A | 775 ml |
| HP 831 Latex Optimizer | CZ706A | 775 ml |
Every one of the seven slots must hold a cartridge for the printer to run. The Latex Optimizer is not optional — it is a clear fluid that fixes the colored inks to the media surface, so prints come out sharp on vinyl, banner and other non-porous materials. It empties at a similar rate to the colors, so keep a spare.
The Latex 315 is a 54-inch entry latex printer for signs, banners, decals and wall graphics. It uses the same ink as the Latex 310. HP discontinued the Latex 300 series in October 2024 and replaced it with the Latex 630, 700 and 800 range, but HP 831 ink and printheads are still sold.
HP 831 ink is region-coded. The part numbers on this page (CZ682A to CZ687A, ending in A) are the Americas set. Cartridges ending in B (Asia-Pacific) or C (Europe, Middle East and Africa) won't work in a U.S. printer.
HP 831 775 ml cartridges fit the whole HP Latex 300 series — the Latex 310, 315, 330, 335, 360 and 365 — plus the Latex 560. See our HP Latex 335 and HP Latex 365 guides if you run more than one. The Latex 570 is different: it uses HP 871 3-liter ink cartridges, not HP 831 775 ml.
Other HP 831 Supplies
The cartridges are only part of the system. The HP Latex 315 also has six HP 831 printheads installed: two Cyan/Black (CZ677A), two Yellow/Magenta (CZ678A), one Light Cyan/Light Magenta (CZ679A) and one Optimizer (CZ680A). It also uses an HP 831 maintenance cartridge (CZ681A). These are long-life parts you replace far less often than ink. We sell the ink, not the printheads.
How to Replace Ink in the HP Latex 315
- Wait for the front panel to report an empty cartridge, or open the ink menu and choose to replace one.
- Open the ink cartridge drawer or cover for the color you are replacing.
- Pull the empty cartridge straight out.
- Shake the new cartridge gently a few times before installing it — ink settles while a cartridge sits on the shelf.
- Push the new cartridge into the slot that matches its color label until it locks, then close the cover.
- Check the front panel to confirm the cartridge is recognized before you start the next job.
Troubleshooting Tips
Cartridge not recognized or "non-HP cartridge" message: Reseat the cartridge firmly. A notice that a cartridge is not original HP is normal with remanufactured ink — accept it on the front panel to continue.
Prints smear or stay tacky: Check the Optimizer cartridge first, then confirm the curing temperature and media preset match the material. Latex ink needs the Optimizer and correct curing to set properly.
Banding or missing colors: Leave the printer powered on so its automatic printhead maintenance can run, then run the printhead cleaning and alignment routines from the front panel. If a color is still missing, check the matching HP 831 printhead and the maintenance cartridge status.
What Latex 315 owners ask
These are the questions that come up most for this printer on retailer Q&A pages, HP's support forum and owner reviews, answered in our words.
Can I use HP 831 cartridges bought in Europe in a U.S. Latex 315?
No. HP 831 ink is region-coded: A for the Americas, B for Asia-Pacific and Japan, C for Europe, the Middle East and Africa, and HP says they don't work across regions. In the U.S., buy the A-suffix set (CZ682A to CZ687A).
How many printheads does it have?
Six. There are two Cyan/Black heads, two Magenta/Yellow heads, one Light Cyan/Light Magenta head and one Optimizer head.
Should I turn the printer off at night?
Experienced owners say no. The printer runs automatic printhead maintenance while it is on, and switching it off is a common cause of nozzle problems.
Can it print on fabric or mesh?
Yes, but HP says porous materials such as fabric, mesh and textiles need a liner. Media can be up to 0.5 mm thick.
Will HP keep supporting it now that it's discontinued?
A UK HP reseller reports that the Latex 300 series was discontinued on October 31, 2024, with parts, support and consumables continuing for at least five years.
Latex 315 quirks worth knowing
- Because the Cyan/Black and Magenta/Yellow heads come in pairs, you can swap a suspect head with its twin to test it. The Light Cyan/Light Magenta and Optimizer heads have no twin, so that test doesn't work for them.
- Owners say the printheads are warrantied by ink volume (about 1,000 ml per head), and the printer's Printhead menu shows each head's warranty status.
- It takes one roll at a time, up to 54 in (1,371 mm) wide, 25 kg and 180 mm in diameter, with an automatic cutter.
- HP rates it at up to 48 m²/hr in Billboard 2-pass mode, but only 10 to 12 m²/hr in the indoor-quality modes most shops use for close-viewed work.
Frequently Asked Questions
Does the HP Latex 315 use HP 831 or HP 871?
HP 831 775 ml cartridges. HP 871 3-liter cartridges are for the Latex 570, not the 315.
Is the Latex 315 ink the same as the Latex 310?
Yes. Both take the same seven HP 831 775 ml cartridges.
Can I print without the Latex Optimizer?
No. All seven cartridges, including the Optimizer, must be installed.
Do the Latex 310, 315, 330, 335, 360 and 365 share ink?
Yes. They all take the same HP 831 775 ml cartridges.
Does using remanufactured cartridges void my warranty?
No. Under the U.S. Magnuson-Moss Warranty Act, a manufacturer cannot void your printer warranty only because you used third-party cartridges. Damage proven to be caused by a specific cartridge would not be covered, but the rest of the warranty still applies. Service contracts (HP Care Packs) can carry their own terms, so check yours.
Other printers that use HP 831 latex ink
HP Latex 365 · HP Latex 335 · HP Latex 570
More HP ink guides: HP OfficeJet 3830 · HP Envy 5000 · HP OfficeJet Pro 8610 · find any printer
Sources
Ratings and prices were checked on October 11, 2026 and will change over time.
Need replacement HP ink cartridges? Shop HP ink cartridges at Castle Ink. Remanufactured, up to 70% less than OEM, and shipped the same day when you order by 4 PM ET.