Epson Perfection 4990 Series Buletin Dukungan Produk - Halaman 4
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DIGITAL ICE for Photo Prints function sequence
1. Scanner lights up lamp A and scans the image.
2. Scanner lights up lamp B and scans the image.
3. Software superimposes the images obtained from each scan and determines the inconsistent area as a flaw
or debris.
4. Software then removes or fixes the inconsistent area(s) detected in step 3 and produces an image with
minimal defects.
DIGITAL ICE for Film function outline
DIGITAL ICE for Film uses infrared light for its process. Longer in wavelength than visible light, infrared light
has, as one of its properties, the ability to scan film media transparently. Hence, when a film image with dust
and/or flaws is scanned using an infrared light, the infrared light is blocked at those points where dust and/or
flaws appear, thereby providing an image with only highly visible dust and/or the flaws. By superimposing the
images scanned with infrared light and visible light, it detects the dust and/or flaws on the document and
automatically removes them using the interpolated and corrected image data near the dust and/or flaws in the
image.
DIGITAL ICE for Film function sequence
1. Scanner scans a visible-light image.
2. Scanner scans an infrared-light image.
3. Software superimposes the images obtained from each light and detects the flaws and/or the foreign
matter.
4. Software then removes or fixes the flaws and/or foreign matter detected in step 3 and produces an image
with minimal defects.
DIGITAL ICE processing speed
Scanner processing speeds with DIGITAL ICE are highly variable and depend upon a number of factors such
as:
- Host processing system configuration (CPU speed, amount of RAM, free HDD space, connection type
USB 1.1/2.0 or FireWire)
- Photo or Film type scan settings (Color or Grayscale, resolution, 16/8 bits per pixel, image size)
- Number of detected defects (amount of damage or debris on the photo/film)
Here are some examples of scan times with and without DIGITAL ICE technology over a FireWire ® IEEE -
1394 connection. Your scan times may vary, depending on your computer system and connection as
noted above.
Original photo
Resolution
4" x 6" photo
300
35mm slide
2400
35mm negative
2400
Scan time Without
DIGITAL ICE
Technology
10 seconds
1 minute
1 minute, 30 seconds
Page
PSB.2004.09.001
Scan time With DIGITAL
ICE Technology
1 minute, 40 seconds
8 minutes, 22 seconds
10 minutes, 20 seconds
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