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EPSON

09/01/2004

Date:

PSB #:

PSB.2004.09.001

Reference:

N/A

Perfection 4870 Series Scanner

Product(s):

Subject:

DIGITAL ICE Technology

This bulletin provides additional information for the Perfection 4870 Series scanner and Epson's

implementation of DIGITAL ICE Technology. It provides such information as: how DIGITAL ICE works, why it

takes longer to scan with DIGITAL ICE, and the functional limitations of DIGITAL ICE and the Epson Scan

software. You will also find information for the LaserSoft® Imaging Inc. SilverFast® Ai 6 scanner

driver with DIGITAL ICE Technology at the end of this document.

Description of DIGITAL ICE from Kodak's Austin Development Center, formerly Applied

Science Fiction (For more information on DIGITAL ICE visit their web site at: www.asf.com)

The award-winning DIGITAL ICE Technology automatically removes surface defects, such as dust and

scratches, from a scanned image. DIGITAL ICE technology differentiates itself from software-only solutions

because it does not soften, blur or otherwise alter any underlying details or composition of the original image.

Instead, the patented DIGITAL ICE technology works from within the scanner, during the scanning process, to

provide users with a clear, authentic base image that improves the original image.

Description of DIGITAL ICE Technology (taken from the Perfection 4870 Quick Guide)

The Perfection 4870 scanner includes DIGITAL ICE Technology for both photo prints and film. The DIGITAL

ICE Technology is built into the hardware of the Perfection 4870 Series scanner and works with the DIGITAL

ICE software built into the Epson Scan driver. The combination of hardware and software lets you scan,

correct, and restore your photos in one easy step, without any compromise to image quality. Note: DIGITAL

ICE Hardware and Software are both required for the DIGITAL ICE Technology to function.

The DIGITAL ICE function can be divided into two types according to what you are scanning. DIGITAL ICE for

Photo Prints is used for photographs, and DIGITAL ICE for Film is used for positive films, color negative films

and monochrome negative films.

With DIGITAL ICE for Photo Prints, your scanner examines your photo for defects on the surface, such as

scratches, tears, cracks, and

information about the shadows these defects create in a separate data space. It then uses this information to

remove the defects from your scanned image so you don't have to remove them yourself.

DIGITAL ICE for Film uses a different method to automatically remove scratches, dust, and fingerprints from

your scanned image. During the typical scanning process, information is gathered using red, green, and blue

channels. With DIGITAL ICE for Film, an additional infrared channel collects the defect information for

correction. The results are truly amazing. Though it takes a bit longer to scan with DIGITAL ICE Technology,

the results will save you time. The majority of the painstaking work of removing scanned defects is done for

you. Final touch-ups can still be done in your image-editing software such as Adobe® Photoshop® Elements

2.0 bundled with the scanner.

DIGITAL ICE for Photo Prints function outline

This scanner has two visible lamps for reflection. The lamps are placed symmetrically to provide the same

image when a scan is made twice. One of the properties of visible light is that it reflects irregularly when it

radiates a flaw or debris. For this reason, the images obtained with lamps A and B will have an inconsistent

area if there is a flaw or debris. This function determines the inconsistent area as a flaw or debris and then

automatically removes the unwanted defect.

RODUCT

UPPORT

debris.

It does this by shining a second light source on your photo and storing

ULLETIN

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PSB.2004.09.001

Originator: TC

Authorization:

Total Pages: 6