Can you explain in more detail how the banner printer can be made that fast? Do you think one reason is because in laser printer, the moving part is the laser

Can you explain in more detail how the banner printer can be made that fast? Do you think one reason is because in laser printer, the moving part is the laser beam which can move very fast, while in inkjet it is the much bulkier printhead? If this is the case then there would be the physical upper limit on how fast can a printhead be moved, vs a laser beam?