User manual

Program Configuration – Image Tab 23

File size = 2

number of bits

Accordingly, if a certain document scanned in black and white format produces a file

of 50KB, the same document produces an image file of 400KB when scanned in 256

colors (or gray scale), and 1.2 MB for true color.

Resolution: The resolution parameter defines how vividly the image will be

displayed. In general, an image that is scanned in higher resolution shows more

details of the original document image. However, as with the color scheme – higher

resolution means larger image file size. ScanShell supports scanning resolutions in

the range of 50 dpi to 600 dpi, in increments of 10 dpi.

ScanShell calculates the approximate file size for bitmap format based on the current

document size, color scheme and resolution. The result is displayed under ‘Image

dimensions and size’.

JPEG Quality: Sets the image quality when saving in JPEG format. This value range

can be between 11 and 100. 100 represents the best image quality, but would also

result in the biggest file size.

Scanner Calibration

With time, the scanner colors detection tends to change to incorrect values. This

phenomenon affects the text detection accuracy as well as the resulted image quality.

To reset the scanner to the proper colors, the scanner needs to be calibrated. To

calibrate the scanner, click on the Calibrate button (located in the configuration

panel’s Image tab) and use the calibration paper card that was part of the scanner

package, to calibrate the ScanShell 800 scanner. The ScanShell 1000 does not require

a calibration paper.

Cleaning the Scanner

Cleaning the scanner improves the scan quality.

How to clean:

Scanner model ScanShell 800: Place the cleaning sheet (that come with the scanner

package) in the scanner tray, and click on the Clean Scanner button. The sheet is fed

back and forth through the scanner and cleans the scanner lens. Add a few drops of

alcohol for better results.

Scanner model ScanShell 800

: Use a soft cloth to clean the scanner glass surface.

Scanner model ScanShell 600

: Unscrew the scanner cover (the screw is located on the

bottom of the device). Use a soft cloth to clean the scanner lens.

ScanShell User Manual version 8.15.5