The printhead is secured to the carriage by the printhead fixer cover and the printhead fixer lever. When the printhead is secured to the carriage, the signal contact

of the head relay PCB is pressed against that of the printhead to convey print signals. Further, the ink passage from the ink tanks is connected to the printhead via

the ink tubes.

b) Ink port

Ink is supplied to the printhead via an ink tube, which runs between the tube guides via joints to reach the carriage and follows up its motion.

Contact

Printhead lock cover

Ink supply joint

Printhead lock lever

ube guide

Carriage motor

Carriage

Ink tube

F-2-11

c) Control unit

The carriage relay PCB is connected to the head relay PCB by means of a flexible cable. The flexible cable between the main controller and the carriage relay PCB

follows up the motion of the carriage together with the tube guide.

A photocoupler encoder mounted in the lower part of the back of the carriage detects a linear scale reading as the carriage moves.

d) Carriage drive

Mechanical misregistrations in the vertical/horizontal and bidirectional print positions of the printhead mounted can be corrected by selecting Adjusting Printer

from the [MAIN MENU] to [Adjust Printer].

A DC-operated carriage motor drives the carriage in the horizontal direction of paper by way of the carriage.

The carriage home position, is where the carriage is slowly brought to the right end at power-on initialization. When the linear scale position is set as a reference

home position for use in subsequent position control operations, the driving of the carriage motor is controlled by control signals generated from the main controller.

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