Epson Perfection V500 Photo - Chapter 2 OPERATING PRINCIPLES; 2.1 Engine Operation Outline

EPSON Perfection V500 Photo Revision A
OPERATING PRINCIPLES Engine Operation Outline 19
2.1 Engine Operation Outline
This section explains the functions and operating principles of the Perfection V500
Photo Engine. The Engine is roughly divided into the Carriage Unit and Carriage
Moving Mechanism.
2.1.1 Carriage Unit outline
The Carriage Unit can be divided into the CCD Sensor Board, LED Board (light
source), and Mirror/Lens Mechanism. (Refer to
Fugure 2-1, 2-2.)
Figure 2-1. Carriage Unit Configuration
 CCD Sensor Board Forms an alternative 12-lines color CCD (R, G, B
independent) and its control and drive circuits.
 LED Board White LED is used as a light source.
 Mirror/Lens Mechanism The beam applied to the scanned document is reflected,
passes through the Mirror/Lens Mechanism in the
Carriage Unit for correction of the beam axis, and then
reaches the CCD Sensor. The light components R, G, B
are extracted by the Color CCD Sensor itself, not by
switching between R, G and B of the light source as
previously.
Figure 2-2. Mirror/Lens Mechanism
B(main2)
B(sub2)
B(main1)
B(sub1)
G(main1)
G(sub1)
G(main2)
G(sub2)
R(main1)
R(sub1)
R(main2)
R(sub2)