Lexmark C540n Laser Colour Printer (Hanwell W7)

This printer has had light home use over the years and was working well under MS Win12 until recently but when I last tried to use it there were coloured stripes down the page (see attached photos). I’m sure that the problem can be solved with the right technical expertise but not by me! The printer has some little used and some new colour toner cartridges. It will be scrapped if no one wants it.