u/Stanwii

I purchased an open Canon 067H laser printer cartridge on eBay, which the seller said was unused. When I received it, it had what appears to be a fingerprint on this component (I do not know what it is called). It was not listed in the product description. I reached out to the seller about it, but have not heard back.

I have not installed the cartridge yet because there is some life left in my old one. Should I return this? I hate to miss out on the deal I got, but I do not know if it will work and my return window will close before you know it. Does anyone think this smudge is a problem? Thanks for whatever advice you have to give!