What Ink Does the HP OfficeJet Pro 6835 Use?

by William Elward Last Updated: November 6, 2026

Quick answer: The HP OfficeJet Pro 6835 uses HP 934 black and HP 935 cyan, magenta and yellow, or the high-yield 934XL / 935XL. Castle Ink sells remanufactured 934XL/935XL 4-packs and singles: 934XL Black, 935XL Cyan, 935XL Magenta and 935XL Yellow.

Watch the numbers: HP 932 and 933 look similar and are still sold, but they do not fit the 6835.

CastleScore · November 2026

69/100 — Situational

HP OfficeJet Pro 6835

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%)	90	About 1¢ per page in black and color with our remanufactured 934XL (1,000 pages) and 935XL (825 pages).
Reliability (13%)	74	Like the rest of the 6830 family, owners report printhead errors that survive resets; the printhead is built in.
Features (12%)	85	Print, copy, scan, fax, document feeder, auto two-sided printing, Wi-Fi, Ethernet, touchscreen.
Value (5%)	—	Not scored without owner ratings

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. With neither owner ratings nor a published expert score, we cap this printer at 69 (Situational) until better data is available.

Older model. This printer is no longer a current model, but its HP 934 and HP 935 cartridges are still widely sold, including our remanufactured versions.

CastleScore is Castle Ink’s own editorial rating, built from retailer star ratings, expert reviews, real cost per page and owner complaint patterns, checked November 6, 2026. It is not a customer review. See every ranked printer or how the score works.

What Ink Does the HP OfficeJet Pro 6835 Take?

Cartridge	HP part no.	Approx. yield	Castle Ink option
934XL Black	C2P23AN	~1,000 pages	Remanufactured, $9.99
935XL Cyan	C2P24AN	~825 pages	Remanufactured, $7.99
935XL Magenta	C2P25AN	~825 pages	Remanufactured, $7.99
935XL Yellow	C2P26AN	~825 pages	Remanufactured, $7.99
934XL + 935XL 4-pack	C2P23AN–C2P26AN	One of each	Remanufactured, $30.99

Yields are HP's figures. Standard 934 and 935 cartridges fit too but print only about 400 pages each. Our cartridges are genuine HP shells, cleaned, refilled and print-tested.

What Does OfficeJet Pro 6835 Ink Cost per Page?

About 1¢ a page in black and about 1¢ per color cartridge with our remanufactured XL cartridges, one of the cheapest running costs among HP cartridge printers of its era.

Will Non-HP Cartridges Work in the 6835?

Usually, yes. HP's dynamic security can block cartridges with non-HP chips after a firmware update, so turn off automatic updates before installing aftermarket ink. If the printer ever rejects a cartridge, we replace or refund it under our 1-year guarantee.

How Do I Replace the Ink in the OfficeJet Pro 6835?

Turn the printer on and open the cartridge access door.
Wait for the carriage to stop moving.
Press the front of the empty cartridge to release it and pull it out.
Remove the new cartridge's packaging and push it into the matching color slot until it clicks.
Close the door and let the printer finish its startup routine.

Which Other Printers Use HP 934 and 935?

The OfficeJet Pro 6830, OfficeJet Pro 6230, OfficeJet 6812 and OfficeJet 6815 use the same cartridges.

What OfficeJet Pro 6835 owners ask

These are the questions that come up most for this printer on retailer Q&A pages, support forums and owner reviews, answered in our words.

Why does it say "Problem with printhead"?

This family's printhead is built into the printer. Power-cycle it and reseat the cartridges first; if the error persists, HP support is the next step.

Is the 6835 different from the 6830?

They're essentially the same printer sold under different model numbers, and they take the same ink.

Frequently Asked Questions