Printing photos onto glass is typically a specialized direct-to-substrate process, not ordinary paper inkjet printing. Based on the answers, a common method is flatbed inkjet printing onto primed glass, often using UV-cured inks. A transparent primer may be applied first to help adhesion, then the color image is printed, followed by a solid white layer behind it so the image displays properly on clear glass.

There isn’t one universal “museum glass” printing method. “Museum-quality glass” usually refers more to the glass itself and its coatings—such as float glass, anti-reflective treatment, or UV-filtering coatings—than to the print process.

Color space is usually not something you can define generically for glass printing. It depends on the specific printer, RIP, inks, and service bureau workflow. In practice, the lab will use the color management supported by its own equipment rather than a single standard RGB/CMYK rule that applies everywhere.

So the best approach is to ask a service bureau whether they print on real glass or acrylic, whether they use UV flatbed printing, what primer/ink system they use, and what file specifications they want.