The printer and ink and media is more expensive than screen print.

For replacement parts low volume digital is suitable

Large volume like game manufacture screen if cheaper and best

Yes if no calibrated correctly or an old or poor maintained can band

Most of the 90s cabinet art was cmyk screened at 55dpi earlier like no fear 32.5dpi

You can scan the films into a pc and compile them into a tiff, which will then print with gradiants

The test is do a print on vinyl and clear translite media , then screw it into a ball if the ink cracks off it's no good

Try it with petrol if ink comes of no good