On Fri, 4 Aug 2006, Zane H. Healy wrote:
I've recently inherited a couple of plotter rooms
with HP 1055CM and 5500PS
plotters. These are the 36" to 42" variety, and the Ink cartridges and
Plotter Head/Cleaner packs tend to each cost as much as a home Inkjet
printer.
...per color. A full set (for the 5500, at least), of C,M,Y,LC,LM,K ink
(0.6l/per), and printer/printhead cleaners runs around $1k.
I spot checked the supplies earlier this week and
discovered that with very
few exceptions most of it is out of date, with dates ranging from 2002
through 2006. Does anyone have any idea how safe it is to use old Ink or
printhead/cleaner kits? How about any guidelines for when the stuff is to
old.
We have used both ink and printhead packs up to two years past the marked
expiration date (we had lower usage and each set lasted longer than we
realized). It does in fact work, but you'll start to see slightly lower
color quality, and the heads will start to clog and require cleaning more
frequently. We finally wrote off the remaining expired supplies, and are
now operating on a "buy when needed" policy for the 5500 -- the sheer size
of the ink carts gives plenty of time to place an order before they run out.
Obviously this is not the sort of question I can get a
good answer from
HP on, as they're going to simply want to sell me new supplies.
Unlike the home inkjets these do not seem to have any time-bombs built into
them where they stop working after the date is passed.
The one major caution I'd have is if they are on an HP support contract
(and considering the failure rate we've seen, and the relative costs of
the contract versus out-of-warranty parts, it's more than worth it), then
if the out of date ink clogs the ink supply tubes (the pressure system
that runs from the left-hand ink tanks to the printheads), HP may not
consider the replacement (several $k) covered under contract.
--Ian