There's no 'global website' for this information. There are some projects that cover a specific slice (linux on laptops
, The Linux Foundation
to name just 2). There are also HCL lists (HCL = Hardware Compatibility List), like the one right here on LQ
But Google, as always, is your friend. linux lexmark X 1270
gives back a lot of URL's. Here's one that seems appropriate to your question: OpenPrinting database - Printer: Lexmark x1270
(from the Linux Foundation site mentioned earlier).
Hope this helps.