- In JV400 series, you can adjust the height of the head to L (1.8mm), M (2.3mm), or H (2.8mm).
 
Loosen the screw at the front of the head and rotate the right-side lever to make adjustment.
* Basically, the height should be set to L (1.8mm). 
 Too much gap between media and the head nozzle may cause ink droplets (mists) to spatter, 
 impacting the drawing quality. 
* After changing the head height, be sure to check the [DROP.POScorrect].
For details, see "Operation Manual". 
Also, please see the video "Setting a roll media." as well. 
00:33~ Adjusting the head height 
03:10~ Setting a media to the roll holder 
05:41~ Adjusting the media position 
07:08~ Preparing for the take-up device and detecting the media 
08:36~ Adjustin the torque limiter and winding the media