Epson Stylus CX3700 - 2.2 Printer Mechanism

EPSON Stylus CX3700/CX3800/CX3805/CX3810/DX3800/DX3850 Revision A
OPERATING PRINCIPLES Overview 36
2.1 Overview
This section describes the operating principles of the Printer Mechanism, Scanner
Mechanism and Electrical Circuit Boards.
 Main Board
 C612 Main Board
 Power Supply Board
 C610 PSB/PSE Board
 Panel Board
 C612 PNL Board
2.2 Printer Mechanism
2.2.1 Printer Mechanism
This printer consists of the Print Head, Carriage Mechanism, Paper Loading
Mechanism, Paper Feeding Mechanism, Ink System.
Like the previous printers, the Stylus CX3700/CX3800/CX3805/CX3810/DX3800/
DX3850 is equipped with two DC motors; one for the Paper Loading/Feeding
Mechanism and the Pump Mechanism with the CR Lock Mechanism, and one for the
CR Mechanism. The ASF Unit for the Paper Loading Mechanism uses rear entry front
eject system. The Paper Feeding Mechanism uses the LD Roller and Retard Roller to
feed paper to the Printer Mechanism in the same way as previous printers.
Figure 2-1. Printer Mechanism block
diagram
Compression
Spring
LD Roller
Retard Roller
Clutch mechanism
PE Sensor
CR Motor
PF Motor
Pump Unit
Cap Unit
Carriage Unit
CR Encoder
Sensor
PF Roller
Timing Belt
EJ Roller
Star Wheel
PF ScalePF Encoder Sensor
Change lever