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The EPSON Perfection 636U’s maximum hardware resolution of 600
×
2400 dpi is
achieved through EPSON’s advanced Micro Step Drive technology. This technology
enables the EPSON Perfection 636U to achieve a maximum
sub-scan
or vertical
resolution of 1200 dpi or 2400 dpi using “half-stepping” and “quarter-stepping” of
the scanning carriage to double and quadruple the optical resolution. To prevent
enormous file sizes when scanning at the maximum hardware resolution, EPSON
recommends a maximum scan window of 4
×
11.7 inches. Full 8.5
×
11.7 inch
scanning is available at a sub-scan resolution of 1200 dpi or 9600 dpi interpolated.
Scaling (Resizing) Images
If you plan to enlarge your image, it is better to enlarge it when you’re scanning rather
than in your application. Each time you modify an image, you lose some quality.
Keep in mind when you enlarge a small photo, such as a 35 mm slide or wallet-size
photo, you’ll need to scan at a high enough resolution to retain your image quality,
but not so high that your file size is too large to be efficient.
You must manually adjust the resolution (dpi) to maintain the same image quality
when you resize your image. For example, if you have a 300 dpi 2
×
2-inch image that
you want to enlarge to 4
×
4 (a factor of 200%), increase the Scale setting to 200%
and change the resolution to 600 dpi.
One-Touch Scanning
Your EPSON Perfection 636U features a one-touch scanning button. With
one-touch scanning, you can just load a document in the scanner, press the scanner’s
]
Start button, and then PageManager opens EPSON TWAIN automatically. To use
this option, you must first install Presto! PageManager (or another application that
supports linking to scanner events with the Start button on Windows 98) and enable
the scanner monitor utility. For details on how to set up one-touch scanning, see
“Using the Start Button” in your
EPSON TWAIN User’s Guide
.
Batch Scanning
You can use batch scanning to save time. Batch scanning lets you scan the same image
with several different settings. See “Batch Scanning” in your
EPSON TWAIN User’s
Guide
for details.
Содержание Perfection 636U
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