3 printhead, 4 paper feed mechanism – Panasonic KX-P1150 User Manual
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KX-P1150
Pin Guide
Stopper
6.3 Printhead
The printhead utilizes 9 electromagnets as a driving
source, which causes the pins to strike the ink ribbon
against the platen and onto the typing paper for
matrix printing. The construction of the printhead is
shown at the left.
6.3.1 Power Transmission Mechanism
The set of 9 electromagnets consists of a one piece
yoke and 9 coils. The armature which secures the
pins is supported by this yoke.
6.3.2 Printhead Pin Operation
When the coil assembly is excited by a print signal,
the armature is drawn in, and the pin secured by the
armature is guided by the various guides to move in
the direction of the platen. The pin strikes the ribbon
to the paper. Next, the return spring moves the
armature and pin from the platen back to the rest
position.
6.4 Paper Feed Mechanism
A DC pulse motor is used as a paper feed motot. Both continuous paper and single sheet can be fed by
operating the paper feed selector. Continuous paper is loaded on both left and right sides of the pin belt on the
tractor drive device. Continuous paper is fed from the rear of the printer. Single sheet is fed from the top of the
printer. The paper feed mechanism is shown below.
Ejection Roller Gear