what is the Exp Date on HP 11a printhead the box. All retail package should have exp dates
793795
He is asking the vendor for the expiration date on the package. None if us will know that. If it is out of date it will not function. Have the vendor look at the box and answer his question.
793796
The date on the package is the warranty expiration date. It DOES NOT mean that the cartridge is no good after the date.
423767
Sorry, I have no ideas. You will need to read the package, and/or email HP and talk with them.
349507
I have to be honest. I never check exp date but never had a problem. I have purchased numerous times for my office
1187451
I looked but there were no dates indicated anywhere on the packaging or cartridges. I have experienced some head clogging with them. Not too bad but I've never had any significant clogging when using retail packaged Epson ink within thier expiration date.
1400112
Sorry, but I did not check for the expiry dates. What I can tell you is that these cartridges worked but they did not print a quarter of the number of pages a regular hp ink normally prints. I was very disappointed.
470055
The "install by" date is basically the deadline date for returning a faulty cartridge. My company has three printers that use these and we have used some after the date printed on the box with no problems. If a problem would have occurred with the expiredd (according to the date on the box) cartridge, my company would have been liable and not HP or the vendor where the cartridge was purchased.
1292798
On my packs of Ink cartridges that appears as a month and a year. It probabably is intended to keep from selling you ink that has become less useful because of age. It may change chemically or dry out or many other things after that date and hp wants to reduce it's responcibility for that.
1954138
no box and no exp. date on wrapper. I haven't opened up the wrappers yet so maybe it's on the cartridge?
1980974
it is original HP and never opened but there is no expiration date on it - it may be out of date but I found it worked fine for me
1980379
I'm not 100% sure but I think the date is for "best if used by". To find out for sure go to HP.com support and ask them.
1954140
Mine did not come in a box, The HP Store no longer even shows the 56/57 Combo Package, The ones I received had dates on the foil pouch several years old. I returned them immediately, There are two dates yymmdd, one is the Manufacture date, the other is the Warranty date, or use-by date. I would only purchase these now from the HP Store with an online coupon for $10 off, they are easy to find.
394452
Each cartridge has a code within it that the printer reads each time it's used. The information contained includes a manufacturing date, expiration date and certification number to identify that it is if fact a genuine HP produce and not some knock-off. The expiration date is there to ensure you get optimum performance from your ink cartridges. If you use refills, the printer will always give you a warning that the cartridge has either expired and/or is a counterfeit. You'll have to use new, original cartridges from HP if you want to avoid this annoyance. Plus of course this gives HP an out for warranty issues should you be using refills or another "look-a-like". Each cartridge has a code within it that the printer reads each time it's used. The information contained includes a manufacturing date, expiration date and certification number to identify that it is if fact a genuine HP produce and not some knock-off. The expiration date is there to ensure you get optimum performance from your ink cartridges. If you use refills, the printer will always give you a warning that the cartridge has either expired and/or is a counterfeit. You'll have to use new, original cartridges from HP if you want to avoid this annoyance. Plus of course this gives HP an out... » Read More Each cartridge has a code within it that the printer reads each time it's used. The information contained includes a manufacturing date, expiration date and certification number to identify that it is if fact a genuine HP produce and not some knock-off. The expiration date is there to ensure you get optimum performance from your ink cartridges. If you use refills, the printer will always give you a warning that the cartridge has either expired and/or is a counterfeit. You'll have to use new, original cartridges from HP if you want to avoid this annoyance. Plus of course this gives HP an out for warranty issues should you be using refills or another "look-a-like". « Show Less
41100
The last HP21 (original package) I purchased from Amazon.com had an expiration date of Dec. 2016. ron
1148491
I sent it back, because I received an aftermarket one instead of a real HP version. our old one was in the printer for 10 years and working fine so I would imagine that the shelf live is pretty long, like honey jars.
419073
I finished them quite a while ago - they usually print an expiration date on the box, which I already threw away. Sorry I can't be of assistance.
1825041
That's a reasonable question for the selling vendor, but Amazon forwarded it to other customers to answer! Since I bought mine months ago, I doubt that the expiration date on my box will help you. In my experience, the shelf life of these is near infinite BEFORE THE SEAL IS TAKEN OFF; they dry out or get gunked up if they sit in the printer too long after having been opened - that happened to me once on a color cartridge when I was printing mostly black.
1622763
I believe the warranty is for the print head to work up to 18 months after the date on the package.