What is Refill Capacity of 78A vs 78D?

[Dancer]

What is Refill Capacity of 78A vs 78D?

All the research I have done on this subject (and I have done plenty)
leaves me in the dark.

Is there a definitive answer to this?

Some say there is a different size foam in the smaller one (78d), so
can't be filled with more than 5-6 cc. Others say it's same size as
78a and can be filled with 10-12 cc in each color.

Has anyone refilled both and KNOW the answer for sure?

Thanks.

Dancer............

 

[Steve B]

Same cartridge, different ink volumes. The 19ml C6578D will refill up to A
size of 38ml total, but I never bothered as the ink status won't report
correctly and will show empty too soon. I suppose there must be some
electrical difference in the 2 types for the printer to be able to tell the
difference and report ink levels correctly.

 

[tomcas]

Same cartridge, different ink volumes. The 19ml C6578D will refill up to A
size of 38ml total, but I never bothered as the ink status won't report
correctly and will show empty too soon. I suppose there must be some
electrical difference in the 2 types for the printer to be able to tell the
difference and report ink levels correctly.

Like Rus said all you have to do is to reset the level indicator the
first time is shows empty with out actually refilling it. The most
compelling reason to resetting is to avoid running the cartridge dry
which can burn out the resistors. Normally I can get 4 refills on the
color cartridge. If you refill it once and run dry its likely to be your
first and last refill. The same applies to the small and large black
cartridges.

 

[tomcas]

Resetting the ink estimation level of the printer is a hassle. The
newer HP printers will "remember" the id number of the last two
inserted cartridges. You have to do some tricks to make the
printer think you have inserted a new cartridge other than the two
that it remembers.

You have to cover 4 specific contacts with tape, insert the
cartridge, then remove the cartridge and cover a different set of 4
contacts, insert the cartridge, remove the cartridge and remove
the tape, then reinsert the cartridge. Either this or you have to
save 2 empty cartridges and do the same swap routine.

The color cartridge can be reset by leaving it out and turning the
printer on and off 3 or 4 times. This doesn't work on the black
cartridge however.

The specific electrical contacts involved vary from printer model to
printer model. Search your ink supplier's site for the proper
contact array involved with your specific HP printer model.

Me? I got tired of this hassle among others with HP printers. I've
joined the Epson and Canon members of this crowd so I can avoid
all that HP trouble.

But you still have to deal with resetting the chipped Epson cartridges
on the newer models and the Canon print heads cost a fortune.

(Mostly, I'm leaning toward Canon these days.)

In the early days, I hung in there with HP when a fully filled color
cartridge was approximately $30 U.S in the 41A cartridge. But,
lately, the same ink quantity is about $55 U.S in the 78A cartridge.

The HP ink price gouge is one of the major reasons I moved to other
printer brands. With HP printers, I had to be quite conservative
with the number of things that we printed here at home because the
ink was costly. On the other hand, with my Epson and my Canon
printers, we just print everything we want to print and we are
still spending less for ink that we did with the HP.

If you refill your own cartridges the ink prices are basically the same.
I too am impressed with the Canons picture printing speed and optical
level detection. Its the life of the print head that concerns me.