Epson Expression 636 Technical Brief (Scanners) - Page 8

Per formance, High-Performance Interfaces, Batch Scanning, Flexibility, Intelligent Negative Scanning - driver

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Performance-High-Performance Interfaces In general, Epson scanners targeted to home and small office users have a USB interface for maximum ease of use. Epson scanners targeted to corporate and graphic arts uses have USB and/or SCSI-2 interfaces for maximum performance. An optional interface for some scanners is the IEEE-1394 (FireWire®) interface. The key differences between the scanner interfaces are: Key Differences USB 1.1/2.0 Macintosh Direct connection to connection USB-ready Macintosh computers SCSI-2 narrow/wide Direct connection to SCSI port or installed Fast SCSI PCI interface card PC connection Direct connection to USB port Daisy chaining Yes, up to 127 devices via USB hub Hot plugging* Yes Performance Up to 1.5/60 MBps Requires Fast SCSI PCI interface card Yes, up to 8 devices No Up to 10/20 MBps FireWire Direct connection to FireWireready Power Macintosh computers and to any PCI Macintosh with an Apple® FireWire Kit Direct connection to FireWire port or an installed FireWire card Yes, up to 63 devices Yes Up to 50 MBps * Hot plugging allows you to attach or detach the cable without powering off/on the scanner or computer. Most Epson scanners that include a USB port offer the newer USB 2.0 (Hi-Speed USB).  Hi-Speed USB is backward compatible with USB 1.1, so if you have an older computer with a USB port, it will work with a new Epson scanner.  You will see only the highest speeds on your scanner if you have a Hi-Speed USB port on both your computer and your scanner. Performance-Batch Scanning Epson scanning software supports batch scanning:  Without batch scanning, you must scan each image separately.  With batch scanning you can define customized settings for each framed original, then capture each one as a separate file-all with one scan. Place originals on the scanning bed Flexibility-Intelligent Negative Scanning With a transparency unit attached, Epson scanners can scan color negatives (such as 35mm negative strips) and convert them directly to positive images.  Some other scanners can only scan positive transparent media, such as color transparencies and slides. Negative Select and define frames in the scanner driver, and scan! Positive to Scanner Technical Brief-Page 8 6/07

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Scanner Technical Brief—Page 8
6/07
Performance—Batch Scanning
Epson scanning software supports batch
scanning:
Without batch scanning, you must scan
each image separately.
With batch scanning you can define
customized settings for each framed
original, then capture each one as a
separate file—all with one scan.
Place originals on
the scanning bed
Select and define frames in
the scanner driver, and scan!
Performance—High-Performance Interfaces
In general, Epson scanners targeted to home and small office users have a USB interface for maximum ease
of use. Epson scanners targeted to corporate and graphic arts uses have USB and/or SCSI-2 interfaces for
maximum performance. An optional interface for some scanners is the IEEE-1394 (FireWire
®
) interface.
The key differences between the scanner interfaces are:
Key Differences
USB 1.1/2.0
SCSI-2 narrow/wide
FireWire
Macintosh
connection
Direct connection to
USB-ready Macintosh
computers
Direct connection to SCSI
port or installed Fast SCSI
PCI interface card
Direct connection to FireWire-
ready Power Macintosh comput-
ers and to any PCI Macintosh
with an Apple
®
FireWire Kit
PC connection
Direct connection to
USB port
Requires Fast SCSI PCI in-
terface card
Direct connection to FireWire
port or an installed FireWire card
Daisy chaining
Yes, up to 127 devices
via USB hub
Yes, up to 8 devices
Yes, up to 63 devices
Hot plugging*
Yes
No
Yes
Performance
Up to 1.5/60 MBps
Up to 10/20 MBps
Up to 50 MBps
* Hot plugging allows you to attach or detach the cable without powering off/on the scanner or computer.
Most Epson scanners that include a USB port offer the newer USB 2.0 (Hi-Speed USB).
Hi-Speed USB is backward compatible with USB 1.1, so if you have an older computer with a USB
port, it will work with a new Epson scanner.
You will see only the highest speeds on your scanner if you have a Hi-Speed USB port on both your
computer and your scanner.
Flexibility—Intelligent Negative Scanning
With a transparency unit attached, Epson scanners can
scan color negatives (such as 35mm negative strips) and
convert them directly to positive images.
Some other scanners can only scan positive
transparent media, such as color transparencies
and slides.
Negative
Positive
to