EC Line EC-PM-80320 - Chapter 4 Printer Working Principle; Working Principle of Thermal Print Head; Matching with Thermal Head and Paper

EC-PM-80320 Service Manual
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Chapter 4 Printer Working Principle
4.1 Working Principle of Thermal Print Head
EC-PM-80320 has one thermal print head which is made up of 640 fever dot-size components. The
print result is formed through thermal print head dot-matrix heating the thermal paper which is to be
black and matching the paper feed. The printable width of thermal print head is 576 dots. 32-dot null
data are input both in the left-side and right-side when printable data are transmitted.
4.1.1 Matching with thermal head and paper
The transverse section figure of thermal head matching with paper is shown as Figure 4-2.
4 mm
0.125 mm
(paper feed pitch)
80 mm (paper width)
+
0
-
1
4 mm
72 mm (print width)
Figure 4-1 Printable width and printable area
Figure 4-2 Thermal head matching with thermal paper
32 dots
0
.12
5
mm
3
2
dots
640 dots (80mm)
Max print width
576 dots (72mm)
Pinch roller
Thermal head
Thermal res
Paper sensor distance res about 8mm
Paper sensor
Thermal paper