J - Jpeg Image Quality; K - Gamma Correction - Honeywell N4680 User Manual

J - JPEG Image Quality

Sets the desired quality when the JPEG image format is selected. Higher numbers
result in higher quality, but larger files. Smaller numbers result in greater amounts
of lossy compression, faster transmission times, lower quality, but smaller files.
(Default = 50)
nJ
0J
100J

K - Gamma Correction

Gamma measures the brightness of midtone values produced by the image. You
can brighten or darken an image using gamma correction. A higher gamma correc-
tion yields an overall brighter image. The lower the setting, the darker the image.
The optimal setting for text images is 50K.
0K
50K
nK
Example:
Gamma Correction
set to 0K:
164
Image is compressed as much as possible while preserving quality factor of n (n = 0 - 100)
Worst quality (smallest file)
Best quality (largest file)
Gamma correction off (default)
Apply gamma correction for brightening typical document image
Apply gamma correction factor n (n = 0-1,000)
Gamma Correction
set to 50K:
Gamma Correction
set to 255K:
N4680 2D Decoded Scan Engine User Guide