I find the biggest source of ghosting is the display of book covers. If you have a protective cover on your Kobo, you really don't get to see the book cover on the E Ink screen anyway, so turning off (on the Power Saving menu, I think) the display of the current read's cover makes for cleaner screens without the cover's ghost after reopening the Kobo's protective cover.
Last edited by RobertJSawyer; 02-26-2020 at 09:00 PM.
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