I am nto convinced. Many plastixs go brittle with age,
asn the plsticiser
evapourates. I would guess that for somethign like a toner cartridge the
plastic used would not be chosen because it had a long lifetime.
I have one some fifteen years old. Is that enough for you?
Whaere? I have never seen spares for toner cartridges
on general sale
over here.
In Brazil :o)