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Ink Cartridges, Toner and Refills
Why does my ink turn dark?
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[QUOTE="l_d_allan, post: 203313, member: 5680"] * I also was curious. I contacted Canon tech support, and got a reply that their OEM ink cartridges (they call them "tanks") don't have a "use-by-yyyymmdd" date because they don't expire. That surprised me, but they should know. * I did purchase a used CLI-8 based printer via Craigslist a while back (iP4500 iirc ... excellent printer), and two of the ink carts were nasty looking ... dark yellow and brackish looking cyan * The printer hadn't been used in years, and couldn't do a decent nozzle check, so it took a bit to get the print-head declogged ... but the negotiated price (much lower) was worth the risk. * The nasty carts looked to be OEM originals, but perhaps not. * My speculation is that the printer + carts may have been stored and gotten very hot, which would probably be very bad even for Canon OEM ink in an OEM cart. * I do have OCP (German) conditioner fluid to flush / purge used carts, so I might have been able to thoroughly "refurbish" the nasty carts and use them. * IIRC, I'm pretty sure I threw them away, as eBay has bulk "virgin empty carts" for about $1.00 each, and I've been very satisfied with the 200 or so "virgin empties" I've purchased over the years. * To me, "life's too short" to deal with a suspect cart that may have residual crud/bacteria/dissolved foam in the three piece cart filters, even after thorough purge / flush. Even with care, I still get more clogs that I'd like, so it is worth it to "error on the side of caution" to reduce print-head nozzle clogs. Or ink flow starvation issues. YMMV. [/QUOTE]
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Why does my ink turn dark?
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