Citizen iDP-3210, Service Manual

Page: 40 / 46

iDP-3210 Service Manual
CITIZEN 40/46
2. Mechanism and Operational Principle
2.1 Outline of Mechanism
ACS-130 is designed for compact printers, and offers major advantage of
ultra slim design and light weight. Its mechanism is composed of a frame,
transmission mechanism, sensor and blade mechanism blocks.
2.2 Mechanism and Operational Principle
2.2.1 Transmission Block
The reduction gears train of this auto cutter is composed of a worm
fitted to the motor shaft, worm gear, and two cutter gears.
One revolution of the motor causes the cutter gears 1/64 revolution
(Fig. 1)
.
2.2.2 Sensor Block
The sensor block is composed of a mechanical contact switch and cutter gear cam.
It detects the cutter's home position (Fig. 2), the turning position for partial cut (Fig. 3),
and the return of the blade. While the blade is in the home position, the status is ON, and when the blade
has returned to the home position, the status becomes ON. The position where the status changes from ON to
OFF after the movable blade starts moving is the turning position for partial cut.