Paper Guide Mechanism; Detector Mechanism - Epson EU-T432 Technical Manual

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Paper Guide Mechanism

This mechanism consists of the paper guide mechanism. The paper path consists of the paper
guide, straight, front and the paper guide, straight, back. The paper path is shown below.

Detector Mechanism

This mechanism consists of the paper-end mechanism, the platen-open detector mechanism, the
head temperature detector mechanism, and the black mark detector mechanism.
Paper-end detector mechanism
The paper-end detector mechanism is located inside the paper guide mechanism to detect the
end of the thermal paper and the paper insertion state in the semi-autoloading mode. This
mechanism consists of the transparent photo sensor, the lever, paper detector which
presses against the thermal paper and the spring, paper detector which pulls the lever,
paper detector.
2-8 Operation Principles
paper guide, straight, front
Figure 2-9 Paper path
Photo interrupter
220 Ω
75 KΩ
<printer side>
Figure 2-10 Paper -end detector circuit
paper
platen
paper guide, straight, back
Pin No.
13
13 V
V
DD
11
paper-end detector signal
7, 8, 10
GND
Rev. A