On Sun, 6 Jul 2008 02:53:43 -0700, HP d145 Printer wrote:
Keep in mind, the expiration dates CAN be defeated (as shown in the prior
article).... but if you don't defeat the arbitrary expiration dates, this
is what you'll be confronted with .......

HP officejet d145

Disable ink drop counting:
1. Press both + and - arrow buttons at the same time
2. Release both + and - arrow buttons at the same time
3. Press buttons 4, then 5, then 6 in quick sequence
4. Press 1 (yes) when it asks you to disable color ink drop counting
5. Repeat steps 1 and 2 above
6. Press buttons 7, then 8, then 9 in quick sequence
4. Press 1 (yes) when it asks you to disable black ink drop counting

Manufacture date = warranty expiry date - 30 months
Warranty expiry date = YYYY/MM/DD printed on ink cartridge
Suggested install-by date = warranty expiry date - 12 months
Install date = date first installed in hp officejet d145
Package printed date = warranty expiry date - 3 months
In-service expiry date = install date + 30 months
Cartridge expiry date = warranty expiry date + 24 months

Example:
Manufacture date = November 03, 2006
Warranty expiry date = May 03, 2007 (printed as 2007/05/03)
Suggested install-by date = May 03, 2008
Install date = June 12, 2008 (for example)
Package printed date = February 03, 2009
In-service expiry date = December 12, 2010
Cartridge expiry date = May 03, 2011

All this can be defeated as shown previously (open the CMOS battery circuit
for an hour). Keep in mind, the HP #14 ink tanks are just a sponge filled
with ink. Nothing more. Nothing less. There's no reason they should expire
if you keep them filled (HP diatribes to the contrary notwithstanding).

Also bear in mind, the HP "ink drop counting" system is designed to prevent
you from refilling, not to prevent the printheads from running dry and
burning out the heating elements due to loss of water cooling! The proof is
in the fact that HP could have measured the ink itself but that would be
too easy - HP insists on measuring the "original" ink drops consumed and
expiring the tank when that original ink was consumed even if a full tank
of better quality ink exists in reality. Sigh. (Of course, they'll wax
eloquently about the "quality" of the ink causing "damage" but guess what
..... they're full of it as their actions betray their true intent).