HP 712 29-ml Yellow DesignJet Ink Cartridge (3ED69A)

Which printers take this part

A 712 yellow belongs in an HP DesignJet T650, either width. Schools know these as the Education Express 24″ and 36″. The larger tanks listed against the T830 and T850 machines belong to different part families and are not interchangeable with a 712.

What yellow does on a T650

Yellow sits in every full-color mix, and it is the tank most likely to go unnoticed: prints can shift toward blue or look flat before a low-ink warning appears. The 712 set carries a single yellow, so consistency across a long run depends on this one cartridge — which matters when a school crest has to match last term’s.

Size, and how the carton compares

This is the 29-milliliter single tank. The same yellow is also sold as a three-carton pack, 3ED79A, holding 87 ml — three of these tanks in one box, not one larger tank. Per milliliter the carton works out cheaper, and the price on each page shows the current difference. A single tank is simpler to put on a requisition; the carton saves a second reorder.

Don’t order this one by mistake

3ED79A is the three-pack of this same yellow. Watch the number immediately after this one: 3ED70A is not a color at all but the 38-ml black. The color run stops at 3ED69A, so a code one digit higher puts black ink in the yellow slot on your requisition.

Specification

Before you raise the requisition

Will a 712 yellow fit our Studio poster maker?

No. Studio machines run a different ink family; a 712 tank is for the T650-based Express 24 and 36 only.

Can we mix a single tank with cartridges from a three-pack?

Yes. 3ED69A and the tanks inside 3ED79A are the same part, so they are interchangeable in the printer.

How to order

Free shipping on all supply orders, and school POs accepted. Not sure which part fits your machine? See all genuine HP parts by number.