● If a large current (such as welding current of a welder) flows from the outside through the frame 
ground, the current may also flow around the signal ground, which may damage the printed 
circuit board or melt the ground wire. 
 
Therefore, when performing welding work near the IJ Printer, follow the method below regardless of 
whether it is in operation. 
 
Cautions on welding 
Isolate the frame, print head, and print target detector of the unit from the conveyor and ground, and 
make a separate ground connection for the printer. With this method, you can perform welding work 
even when the IJ Printer is in operation. 
 
 
Cautions on welding