Citizen CL-S400DT Technical Manual page 24

Chapter 2 Operating Principles
2-1. Operation of Each Mechanism
When thin media is used (thin thermal paper, label paper, etc.):
When thin media is used, the optimum position of the thermal element is nearly right above the
center of the "SA2 Platen". The printer is designed so that the thermal element is set to that
position when the Media thickness adjustment dial is set to "1".
* Factory default: The Media thickness adjustment dial is set to "1".
[Thin media (toward dial No. 0)]
(Media thickness adjustment dial)
Cam Adjust Head Angle
SA Plate Holder Head
Supporting point
B
A
SA2 Head
Media
SA2 Platen
Thermal element
2-11
CL-S400DT