AutoPhotoFine (similar to PhotoEnhance in the driver) is used to improve quality.

EPSON Stylus Scan 2500

Revision A

2.4.2 PC copy process

PC Copy Settings

 

Mode

 

Setting

 

Scan Res. dpi

 

Print Res. dpi

 

Media

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

240

 

Speed

 

All

 

Text

 

 

 

 

 

 

 

 

 

 

Fine

 

360

 

Quality

 

All

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

240

 

Speed

 

All

 

Text & Image

 

 

 

 

 

 

 

 

 

 

Fine

 

360

 

Quality

 

All

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

240

 

Speed

 

All

 

Photo

 

 

 

 

 

 

 

 

 

 

Fine

 

360

 

Quality

 

All

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OriginalColor-

 

Normal

 

240

 

Speed

 

All

 

 

 

 

 

 

 

 

 

 

Copy

 

 

 

 

 

 

 

 

 

 

Fine

 

360

 

Quality

 

All

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.4.2.1 Normal PC copy

Scan > gamma curve > image processing > color matching table > print

1.The scanner scans at 300 or 600 dp, but EPSON TWAIN calls for 240 or 360 dpi image data (to match printer resolution).

2.The image data is analyzed to remove the background color of paper and to remove any image from the reverse side of the paper.

3.The image is improved with the Auto Document Enhancement feature which:

T

Sharpens edges

Smoothens characters

Removes moire (usually - see original color copy below) from

 

documents that were printed from ink jet printers - this prevents

 

CMYK color meshes from doubling when the image is printed again

 

from an ink jet printer

4. The color matching table is consulted to convert RGB to CMYK.

5. The print resolution varies according to media type; same as Speed vs Quality slide bar in the printer driver.

2.4.2.2 Original color copy

Original color copy does not process or enhance the scanned data. This is useful in two cases

Scan > OriginalColorCopy > color matching table > print

1.

The scanner scans at 300 or 600 dp, but EPSON TWAIN calls for 240 or

 

360 dpi image data (to match printer resolution).

2.

The image data is not analyzed or modified.

3.

The color matching table is consulted to convert RGB to CMYK.

4.

The print resolution varies according to media type; similar to the Speed

 

Tvs Quality slide bar in the printer driver.

Operating Principles

Local and PC Copy Principles

53

Page 53
Image 53
Epson Scan 2500 service manual PC copy process, PC Copy Settings, Normal PC copy, Original color copy