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    My HP CB436A toner cartridge printed all black pages. What should I do

    Hi all, A few days ago, I bought 4 pcs of compatible HP CB436A toner cartridges from Ebay. Yesterday, I installed one toner cartridge in my printer. It printed all black pages. I emailed the buyer and it hasn't replied me yet. Therefore, I wonder if anyone here can give me some advice about...
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    The difference between refilled cartridges and compatible cartridges

    On the Internet, I find some ink cartridges, for example, Epson T544, share the same models between refilled cartridges and compatible cartridges. Can anybody tell me what the difference between them? Many thanks!!!
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