Epson Perfection 640U User Manual

EPSON Perfection 640U

Scanner Parts

Start button

indicator
light

Copy button

document
cover

Scan button

carriage (in the
home position)

document
table

Maximum 600 dpi (main scan) × 2400 dpi

hardware (sub scan)
resolution*

* The maximum hardware resolution of 600 × 2400 dpi is achieved

using EPSON’s Micro Step Drive

™

technology.

Maximum 9600 × 9600 dpi

interpolated
resolution

Speed (600 dpi, Color: 16 msec/line
draft mode) Greyscale: 5.3 msec/line

Output resolution 72 to 9600 dpi

Command

level

ESC/I-D1

Zoom 50 to 200% in 1% increments

Pixel depth Color: 12 bits/pixel (input)

8 bits/pixel (output)

Brightness 7 levels

Line art settings 1 bit/pixel

Digital halftoning Error diffusion: 3 modes (A, B, C)

Dither (resident): 4 modes (A, B, C, D)
Dither (user-defined): 2 modes (A, B)

USB interface
connector

DC inlet

transportation lock

Scanner Specifications

Basic Specifications

Scanner type Flatbed, color

Photoelectric Color CCD line sensor
device

Effective pixels 5100 × 7020 pixels at 600 dpi,

100% scaling

Maximum US letter or A4 size

document size (8.5 × 11.7 inches [216 × 297 mm])

Gamma correction 1 type for user-defined

Color correction 1 type for user-defined

Interface

USB (Type B receptacle connector)

Light source White cold cathode fluorescent lamp

Reliability 30,000 cycles of carriage movements

(main unit MCBF)

Dimensions Width: 10.6 inches (26.9 cm)

Depth: 17.1 inches (43.5 cm)
Height: 3.7 inches (9.3 cm)

Weight Approx. 6.2 lb (2.8 kg)

Electrical

Specification

Input voltage range DC 24 V

Rated current 0.8 A

Power
consumption

Note: Check the label on the back of the scanner for voltage

information.

Approx. 17 W

Optical resolution 600 dpi

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EPSON Perfection 640U

Environmental

Temperature Operation: 41 to 95 °F (5 to 35 °C)

Storage: –13 to 140 °F (–25 to 60 °C)

Humidity Operation: 10% to 80%
(without Storage: 10% to 85%
condensation)

Operating Ordinary office or home conditions; avoid
conditions extreme dust, direct sunlight, and strong

light sources. Make sure the outlet
provides enough power.

Safety Approvals

120 V model

Safety standards UL 1950

CSA C22.2 No. 950
EMC FCC part 15 subpart B class B

CSA C108.8 class B

230 V model

Safety standards EN 60950

EMC EN 55022 (CISPR Pub 22) class B

AS/NZS 3548 class B

USB Interface

Interface type Universal Serial Bus Specification

Revision 1.1

Configuration

Element Description

Configuration Characteristics: Self-powered

Remote wake up feature: Not supported
Maximum power consumption from VBUS:
2mA (5V)

Interface No alternate setting

Number of endpoints used by this interface
(excluding endpoint 0): 2
Class: Vendor specific

Endpoint 1 Bulk IN transfer

Maximum data transfer size: 64 byte

Endpoint 2 Bulk OUT transfer

Maximum data transfer size: 64 byte

String Descriptor Language ID: US English

1: Manufacturer: “EPSON”
2: Product: “Perfection 640U”

Electrical standard Full Speed mode (12Mbit/s) of

Universal Serial Bus Specification
Revision 1.1

Connector type One receptacle (Type B)

CE marking

230 V model Low Voltage Directive 73/23/EEC

EN 60950

EMC Directive 89/336/EEC

EN 55022 Class B
EN 50082-1

IEC 60801-2
IEC 60801-3
IEC 60801-4

Connector pin arrangement

Pin number Signal Connector

1VCC
2 –DATA

3+DATA

4 GND

Initialization The scanner can be initialized (returned to
methods a fixed set of conditions) in the following

ways:

Hardware
initialization

Software
initialization

* The scanner is plugged in.
* The USB cable is unplugged from the USB port

on the scanner.

* Software sends the ESC @ (initialize the scanner)

command.

* The scanner receives a Bus Reset from the USB

interface.

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