Overview; Printer Mechanism Operating Principle; M-4I60 Printer Mechanism - Epson Stylus Color 1520 Service Manual

2.1 Overview

This chapter describes the operating principles of the printer mechanism and electrical circuit.
2.2 Printer Mechanism Operating Principles

2.2.1.1 M-4I60 Printer Mechanism

This printer is composed mainly of the printhead unit, paper feeding mechanism, CR mechanism and the
pump mechanism. The block chart for the printer mechanism is shown in Figure 2-1. The printer mechanism
of this printer has 2 motors: CR and PF. The torque from the CR motor moves the CR in the column
direction. The torque from the PF motor is transmitted to both the paper feeding mechanism and the pump
mechanism. The direction is determined by the CR position. The release lever transmits torque from the PF
motor to the tractor side to feed continuous paper.
PF Motor
CR Motor
Release Lever
Disengage Mechanism
Black
Figure 2-1. Printer Mechanism Block Diagram
Push Tractor Mechanism
Paper Feed Mechanism
ASF Mechanism
(For cut sheets only)
Pump Mechanism
CR Unit
Color
Operating Principles
2-1