Media Thickness Adjustment Mechanism - Citizen CL-E700 series Technical Manual

2-1-8. Media Thickness Adjustment Mechanism

The major components of the media thickness adjustment mechanism are:
(a) Cam Head Adjust (Media thickness adjustment dial)
(b) Bracket Head
According to the softness of media, the optimum thermal element position against the media is
displaced. The media thickness adjustment mechanism shifts the position of the "SA Head" back and
forth a little to obtain optimum printing quality.
* When shipping, the Media thickness adjustment dial is set to "1" or "2" depending on your printer.
When soft media is used (thin thermal paper, label paper, etc.):
When soft media is used, the optimum thermal element position is obtained
by setting the dial to "1" or "2" (the shipping value (default value)).
* On the label, a dot is marked to either "1" or "2" depending on your printer
as shown on the right. The marked value is the optimum position for soft
media.
When hard media is used (tag paper):
When hard media is used, the optimum thermal element position shifts a bit
toward the front (toward the left viewing from the right side) from the center
of the "SA Platen".
Since the optimum position varies according to the hardness of media, it is necessary to adjust the
Media thickness adjustment dial from "1" or "2" to a larger number to find the optimum position.
As the dial is turned, the projection "A" of the "SA Head Adjust Lever 2" moves along the groove of
the dial, and the end part of the "SA Head Adjust Lever 2" swings up and down around its supporting
point.
Since the end part of the "SA Head Adjust Lever 2" is connected to the end "B" of the "Bracket Head"
via the spring, the end "B" also swings and down. When the end "B" swings, the "Bracket Head" turns
around its supporting point, resulting in shifting the thermal element position slightly.
When the Media thickness adjustment dial is set to the larger number () for hard media, the end "B"
of the "Head Bracket" lowers more (, ). Then, the thermal element position shifts to the left from
the center of the "SA Platen" (), viewing from the right side of the "SA Platen".
For soft media
Bracket Head
Thermal elements
Ribbon
Media
For hard media
(c) SA Lever Head Adjust 2
SA Head Holder (Fixed)
Supporting
point
SA Head
SA Platen
B
4
2-17
Chapter 2 Operating Principles
2-1.
SA Lever Head Adjust 2
Cam Head Adjust
B
(Media Thickness Adjustment Dial)
A
2
Supporting
point
Groove
3
Operation of Each Mechanism
Marking (Default position)
Either "1" or "2"
1
CL-E700 series