Oki ML421 Maintenance Manual - Page 31
Mechanical Operation
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Oki Data CONFIDENTIAL 2.2 Mechanical Operation 2.2.1 Printhead Mechanism and Operation (See Figure 2-2.) The printhead is a spring charged 9-pin driving head using a permanent magnet. It is attached to the carriage, which moves in parallel with the platen. Electrically, this unit is connected to the control circuits through the control board. Figure 2-2 Arrangement of the Head Pins View from the Tip of the Printhead (1) The printhead configuration: The printhead is composed of the following parts: (a) Wire guide (b) Spring assembly (Wire, Armature, Spring, Yoke, Spacer) (c) Magnet assembly (Magnet, core, coil, Yoke) (d) Printed circuit board (e) Fin 42113901 Rev.2 31 /
42113901
Rev.2
31 /
Oki
Data
CONFIDENTIAL
2.2
Mechanical Operation
2.2.1
Printhead Mechanism and Operation (See Figure 2-2.)
The printhead is a spring charged 9-pin driving head using a permanent magnet. It is attached
to the carriage, which moves in parallel with the platen. Electrically, this unit is connected to
the control circuits through the control board.
Figure 2-2
Arrangement of the Head Pins View from the Tip of the Printhead
(1)
The printhead configuration:
The printhead is composed of the following parts:
(a)
Wire guide
(b)
Spring assembly (Wire, Armature, Spring, Yoke, Spacer)
(c)
Magnet assembly (Magnet, core, coil, Yoke)
(d)
Printed circuit board
(e)
Fin