In practical terms, a more convenient way to achieve this is just printing the document to a PDF, which rasterises the visible layer into what the printer would see. Most pdf tools support this.

That seems like a dangerous approach. Though printer drivers do often use rasterization, especially when targeting cheap printers, many printers can render vector graphics and text as well. Print-to-PDF will often use the later approach, unless of course the source program always rasterizes it's output when sending it out to the printer driver, or the used Print-to-PDF driver is particularly stupid.