Based on this answer to the question "Why shouldn't I attach laser printers or scanners to a UPS?", and a comment made by Blunder, should you plug a printer directly into a wall socket and avoid plugging it into a surge protector?
When turned on, Laser printers draw a very high current to heat up their fuser roller. their current draw can go from 0 to 20A in milliseconds. A typical UPS cannot cope with such a spike.
The problem is this inrush current at start-up, not the normal operating current. The inrush current can be seven times the normal operating current of the printer.
As a surge protector aims to limit sudden spikes in voltage, it would seem that a surge protector would restrict this inrush current, as increased current would cause a higher potential difference in voltage.