Epson Perfection 640U Series, Service Manual

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EPSON Perfection 640U Revision A
Product Description Features 8
1.1 Features
The major features of the EPSON color image scanner Perfection 640U are as
follows.
!
Easy to use: USB I/F, Friendly user interface TWAIN
EPSON Smart Panel (Achieve easy scanning
with three buttons)
!
High quality:
Resolution: 600 dpi (Optical resolution by 3 line CCD with
15300 pixels)
Gray scale levels: 12bits (In: 12bits, Out: 8bits)
!
Command level: ESC/I-D1
Figure 1-1. Exterior View of the Perfection 640U
1.2 Specifications
GENERAL SPECIFICATIONS
!
Product type: Flatbed color image scanner
!
Sub-scanning method: Movement of the scanning head
!
Photoelectric device: Color CCD line sensor
!
Maximum read area: 8.5 x 11.7” (216 x 297 mm)
!
Maximum effective picture element:
5100 x 7020 pixels (600 dpi)
!
Scanning resolution:
Main: 600 dpi
Sub: 2400 dpi with micro step
! Output resolution: 72, 96, 150, 300, 600, 1200, 2400, 9600 dpi
!
Gray scale levels: 12bits/pixel (In: 12bits, Out: 8bits)
!
Color separation: By the color filter of CCD
!
Scanning speed (600 dpi): Color: 16 msec/line
Monochrome (bi-level):5.3 msec/line
!
Command level: ESC/I-D1
!
Gamma correction: User defined 1 level
!
Interface: USB (Type-B Receptacle Connector)
!
Operating system: Microsoft Windows 98 (pre-install model only)
Microsoft Windows2000 will be supported.
Macintosh System 8.1 or later (Macintosh with
standard connection with USB)
!
USB hosts: All of USB ports work correctly. (The
functinality of the USB port(s) must be ensured
by the vendor of the Host.)