Mechanical Function; Carriage Drive System; Power Transmission Mechanism; Print Timing - Panasonic KX-P1180 Service Manual

KX-P1180
6. Mechanical Function
6.1 Carriage Drive System
This operation uses a pulse motor to move the car-
riage 1/60 inch per single drive pulse. The carriage |
Carriage Drive Gear slides on the carriage guide plate and carriage shaft |
Timing Belt Printhead when spacing to the right and left. The printhead is i
fixed on the carriage by 2 screws. |
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6.1.1 Power Transmission Mechanism
The rotation of the carriage motor is transmitted to
the carriage through the carriage drive gear via the
motor gear which is attached to the carriage motor.
The timing belt fixed under the carriage is looped
around the idie pulley and carriage drive gear. This
causes the carriage to move left and right along the |.
carriage shaft. Also, the timing belt is given proper
tension by the idle pulley tension spring hooked be- -
tween pulley bracket and chassis.
Idle Pulley
6.1.2 Print Timing
Print timing for pica (1/60 inch) and elite (1/72 inch) |
is generated by a software operated timer. Refer to
"Carriage Motor Drive Block" page 8-10.
6.1.3 Home Position Detector Mechanism
The home switch is a leaf switch located at the far
left of the printer. Its function is to notify the CPU of
the reference position of the carriage. During spac-
ing operation, when the carriage approaches the left
margin, the carriage rear guide, mounted on rear of
the carriage, actuates the home switch, generating
the signal and indicating carriage positiontothe CPU.
Carriage Rear Guide