87
m Drum Section
chap.2
Description
The ink amount variation in the ink control section is read by the electric capacity variation between the
detection needles on the ink detection PCB Unit and the GND and the ink signal is output to the main PCB
Unit. The main PCB Unit controls the ink pump motor ON and OFF by this signal.
When NO INK continues while the drum rotates 20 times (speed 3*) during printing, it is determined that the
ink pack is empty, "NO INK" is displayed and the machine stops printing.
(* the number of drum unit rotations; it varies depending on the printing speed.)
(1) Ink Detection
3. Function of Parts
\See page 89
R8S02078
Ink detection PCB unit
LED
Squeegee roller
Ink roller
Ink
Detection needle
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