Product Information Guide

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EPSON Expression 1680

1/01 EPSON Expression 1680

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Scanner Parts

Scanner Specifications

Scanner

General

Scanner type Flatbed, color

Photoelectric

device Color MatrixCCD

™

line sensor

Effective pixels 13600

18720 pixels (1600 dpi)

Optical density 3.6 Dmax

Color depth 48-bit internal/48-bit external

Grayscale depth 16-bit internal/16-bit external

Maximum

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

A4 or Letter (the reading area can be

specified from your software)

Optical resolution 1600 dpi

Maximum hardware

resolution* 1600 dpi (main scan)

3200 dpi with Micro Step Drive

™

(sub scan)

* The maximum hardware resolution of 1600 × 3200 dpi is

achieved using EPSON’s Micro Step Drive technology

Maximum interpolated

resolution 12800

12800 dpi

Speed

(1600 dpi,

draft mode) Color: 9.2 msec/line (approx.)

Grayscale: 3.1 msec/line (approx.)

Line Art: 3.1 msec/line (approx.)

Color separation RGB color filters on CCD

Reading sequence Monochrome: One-pass scanning

Color byte sequence: One-pass scanning

(R, G, B)

Color line sequence: One-pass scanning

(R, G, B)

Zoom 50 to 200% in 1% increments

Command level ESC/I-B8

Pixel depth 16 bits per pixel (16 bits per pixel input,

1 to 16 bits per pixel output)

Brightness 7 levels

Line art settings Fixed threshold

TET (Text Enhancement) Technology,

enable/disable selectable)

Digital halftoning AAS (Auto Area Segmentation,

enable/disable selectable)

3 error diffusion modes (A, B, and C)

4 dither patterns (A, B, C, and D) for

bi-level and quad-level data

(2 downloadable dither patterns)

Gamma

correction 2 types for CRT display

3 types for printer

1 type user-defined

document

cover

document

table

carriage

(at home position)

lights

a Start button

Operate button

SCSI interfaces

transportation lock

optional

interface slot

SCSI ID switch

terminator switch

USB interface

option connector

AC inlet

Summary of content (8 pages)

PAGE 1
EPSON Expression 1680 Scanner Parts Optical density 3.6 Dmax Color depth 48-bit internal/48-bit external Grayscale depth 16-bit internal/16-bit external Maximum document size document cover carriage (at home position) 8.5 × 11.
PAGE 2
EPSON Expression 1680 Color correction 1 type for CRT display 3 types for printer (available in color byte sequence mode and color line sequence mode) 1 type user-defined Interfaces SCSI 2 (micro DB 50-pin connectors) USB (Type B receptacle connector) IEEE 1394 (FireWire); optional 230 V model Safety: EN 60950 EMC: EN 550022 (CISPR Pub 22) class B AS/NZS 3548 class B SCSI Interface Interface type ANSI X3T9.
PAGE 3
EPSON Expression 1680 Option Interface Connector Electrical Interface type For use with the optional automatic document feeder (B813162) and transparency unit (B813182) Input voltage 21.6 to 26.4 VDC 4.75 to 5.25 VDC Rated current Output voltage 21.6 to 26.4 VDC 4.75 to 5.25 VDC 0.6 A 0.1 A Output current 0.6 A (24 V) 0.
PAGE 4
EPSON Expression 1680 Lights and Buttons Transporting the Scanner The scanner has two indicator lights and two buttons on its control panel. Light status and button functions are described in the tables that follow. When you transport the scanner a long distance or store it for an extended time, follow the steps below to secure the carriage. Scanner indicator lights 1. Make sure the transportation lock on the back of the scanner is in the UNLOCK position.
PAGE 5
EPSON Expression 1680 If you are using a transparency unit and it is switched on, the scanner carriage will not move to the home position. Remove the transparency unit first, then perform the steps above. See the next section for instructions. Scanning with EPSON TWAIN Pro 1. Start your host application (for example, Adobe® Photoshop® LE). Transporting the Transparency Unit 2. Select your scanner driver. (Unless you change your source, you only need to do this step once.
PAGE 6
EPSON Expression 1680 The READY light on the front of the scanner flashes while it’s scanning. In a few moments, a scanned image is imported into your host application’s window. For example, if you’re scanning a photograph, select Flatbed as your Document Source, 24-bit Color (Std) as your Image Type, and EPSON Stylus Printer (Photo) as the Destination, if you’re sending the scanned image to an EPSON inkjet printer. If you’re using the optional transparency unit, select TPU for Neg. Film or TPU for Pos.
PAGE 7
EPSON Expression 1680 Starting EPSON Scan Server The command you choose from the File menu differs from one host application to another. With other host applications, you might choose Import or Select TWAIN_32 Source, for example. EPSON Scan Server starts automatically whenever the scanner server is turned on. When EPSON Scan Server is running, you’ll see either the EPSON Scan Server dialog box, or the EPSON Scan Server icon on the Windows taskbar.
PAGE 8
EPSON Expression 1680 Stopping a Scan in Progress You can stop a scan in progress from either the client computer or the scanner server. ❏ To cancel a scan from the client computer, click the Cancel button on the Progress bar. ❏ To cancel from the scanner server, click the Cancel button at the bottom of the EPSON Scan Server dialog box. ❏ To break the connection between the client computer and the scanner server, click the Stop button on the EPSON Scan Server dialog box.