EPSON Stylus Photo 750

Revision A

2.1 Overview

This section describes operating principles of the printer mechanism and electric circuit boards (C259Main, C257PSB and C209PNL).

2.1.1 Printer Mechanism

This printer is composed of Print Head, Carriage Mechanism, Hopper Drive Mechanism, Paper Feed Mechanism, Pump Mechanism and Carriage Lock Mechanism.

†Print Head

Each color 120 DPI, 48 nozzle x 6 colors(Black, Cyan, Light Cyan, Magenta, Light Magenta, Yellow). Head is mounted at the carriage mechanism.

†Carriage Mechanism

This mechanism consists of Carriage Motor(CR Motor), Carriage, Timing Belt, CR Guide Shaft, CR Guide Frame and Carriage Home Sensor (HP Sensor).

„Carriage

Print Head is mounted.

 

 

 

 

 

P F

M o t o r

 

„

CR Motor

 

 

 

 

 

 

 

This motor moves the carriage to the appointed position on the

 

 

 

 

 

 

 

 

 

C a r r ia g e M e c h a n is m

 

 

 

 

platen for the printing operation by using the timing belt.

 

 

 

 

 

( P r in t

H e a d )

 

 

 

 

 

 

„

CR Guide Shaft

 

T im in g

B e lt

C R

M o t o r

 

 

 

 

Since this guide shaft is ecentric shaft, it is rotated by the adjust

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

lever and sets the platen gap “0“ or “+”. This prevents the print

 

P a p e r

L o a d

P u m p

 

 

head and print surface from contacting and rubbing.

 

T r ig g e r

 

 

 

 

 

 

 

 

 

 

 

 

 

 

† Paper Feed Mechanism

 

 

 

 

 

 

 

 

This mechanism consists of Paper Feed Motor(PF Motor), PF

 

P a p e r

F e e d

 

 

 

Roller, Paper Feed Roller Line and Paper Guides.

 

M e c h a n is m

 

 

 

 

 

 

 

 

 

 

 

C a r r ia g e L o c k

Hopper Drive Mechanism

 

 

 

 

 

 

 

†

 

 

 

 

 

 

M e c h a n is m

This mechanism is installed at the rear side of the printer and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

consists of Paper Pick Up Roller, One-way Clutch and Hopper.

 

H o p p e r

D r iv e

 

 

 

Operation is performed by the PF motor, when the carriage is

o p 1

M e c h a n is m

 

 

 

 

 

 

 

 

 

 

 

 

around the left edge. Paper is set to the hopper. One-way clutch

 

 

 

 

P u m p M e c h a n is m

 

rotates the Pick Up roller for paper loading by using the driving

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

power of the PF motor.

Figure 2-1. Printer Mechanism

Operating Principles

Overview

28

Page 32 Page 34
Page 33
Image 33
Epson Photo750 manual Printer Mechanism
Page 32 Page 34
Top Page Image Contents