FS p / FS q are obsoleted commands, so it is better not to use them.
Currently, the commands to handle NV images are sequences starting with GS ( L / GS 8 L.
Obsolete Commands

However, depending on the vendor and model of the printer you are using, it may not be possible to use it, so please contact your vendor or reseller for accurate information.

Alternatively, the situation where printing is not possible may be due to some of the conditions written in the [Notes] of this article.
FS p [obsolete command]