Comment 5 for bug 239982

Well, not sure if what I say in this comment is not already known... let's say it, I'll be sure then.
It may not really be linked, I know next to nothing about HP printers.
This model is very near model listed as needing MANUAL reset of ink used (with Windows software I think):

HP Officejet 500, 600, and 700: HP Fax 910 and 920
These models count the ink drops used by the cartridge. You must manually reset the counter when a new cartridge is inserted. To reset the counter, follow the steps below:

   1.
      Turn on the unit.
   2.
      Open the top cover to access the print cartridges.
   3.
      Remove the new cartridge that is causing the message.
   4.
      Reinsert the cartridge and close the cover. The following message will appear on the front panel: "Press 1 for new cartridge or press 2 for a used cartridge."
   5.
      Press the 1 on the numeric keypad of the HP product.

If the message, press 1 for new cartridge or press 2 for a used cartridge, "does not appear after removing and reinstalling the new cartridge, and the low ink warning message still displays, follow the steps below:

   1.
      Turn on the unit.
   2.
      Open the top cover to access the ink cartridges.
   3.
      After the cartridges stop moving, unplug the power cord.
   4.
      Remove both cartridges and close the top cover.
   5.
      Plug the power back in. The unit will reinitialize and a message will appear to insert the cartridges.
   6.
      Open the top cover and reinsert the ink cartridges. Close the top cover. The message, "Press 1 for new cartridge or press 2 for a used cartridge," should appear. If it still does not appear, the unit may require service.

Maybe hplip fail to implement step 6?

The info was taken from:
http://h10025.www1.hp.com/ewfrf/wc/fastFaqLiteDocument?lc=en&dlc=lt&cc=lt&docname=buu01850