Samsung CLP-415n printing gray lines and full black page for the demo page

[tosho]

I have Samsung CLP-415n from 5-6 years ago the last time I used it was few years ago and there was some problem with the colors aligning now I dig it again and when I print directly from the printer some Information stuff I get gray pages with lines and for the Demo I get full black page, also the Toner Waste Container gets full after printing 5-6 black pages, I clean it and then try again and for 1-2 pages it gets 1/3 full. The 'waste' toner looks like dark purple.

Photos:
The Demo page is the old one from 2-3 years ago, the full black page is now when I try to print Demo. The others gray pages with lines are when I print some Information stuff directly from the printer.
(Sorry for the bad quality my phone is trash)

The printer was in my attic (in the box) which can gets really cold in the winter and really hot in the summer. Idk if that matters.
I know the cartridges are full I replaced only the Black one (like 4 years ago). I also notice black lines or toner waste at the back of the pages.

Any idea what's causing this?

 

[The Hat]

Any idea what's causing this?

Yes abuse, you can’t expect a printer to work properly when given this type of neglect and abuse, the environment you had it stored in was clearly not appropriate and you can see the direct results of that.

Put it back in your attic or find a recycling centre for it, because it would be cheaper to buy a new printer than try to get this thing going properly once more..

We’re all out of miracles this side of Christmas.. Sorry..

 

[tosho]

I like your optimism and appreciate your help.
Probably I should have pack it in my suitcase and bring it with me on the plane to another country when I left home few years ago. And whatever it was in the attic or in the room wouldn't made much difference because there was no one there to heat up the place anyway.
Happy New Years Eve.