Image Quality
January 2011
Lexmark X792de MFP
www.BERTL.com
Copyright © 2011 BERTL Inc.
January 2011
All Rights Reserved. The license under which this document is made available and applicable law prohibit any reproduction or further transmission of any portion of this document. This
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Page 11
IMAGE QUALITY
Print Halftones
Min. Gradation*
Max. Gradation**
Black
10
100
Cyan
10
70
Yellow
10
90
Magenta
10
100
*Minimum gradation is on a scale of 10 – 100 percent in 10 percent
increments. The best possible minimum gradation is 10 percent.
**Maximum gradation is on a scale of 10 – 100 percent in 10 percent
increments. The best possible maximum gradation is 100 percent.
Copy Halftones
Min. Gradation*
Max. Gradation**
Black
10
90
Cyan
10
70
Yellow
20
100
Magenta
10
70
*Minimum gradation is on a scale of 10 – 100 percent in 10 percent
increments. The best possible minimum gradation is 10 percent.
**Maximum gradation is on a scale of 10 – 100 percent in 10 percent
increments. The best possible maximum gradation is 100 percent.
Negative/Positive Lines*
Line Width
(points)
Negative
Positive
Vertical
Horizontal
Vertical
Horizontal
1
√
√
√
√
2
√
√
√
√
3
√
√
√
√
4
√
√
√
√
5
√
√
√
√
6
√
√
√
√
A “
√
” mark indicates the device was able to print the line width correctly.
*Chart cells containing an “x” indicate that the printer was not able to print
the line width correctly. Overall, the fewer “x’s,” the better the image
quality. If no cells are marked with an “x,” then the device was able to
print all line widths correctly.
Negative/Positive Dots*
Line Width (points)
% of Dots Printed
1 pixel cyan
100
1 pixel magenta
100
1 pixel yellow
100
Negative/Positive Dots*
Line Width (points)
% of Dots Printed
1 pixel Black
100
1 pixel Black Neg
75
2x2 pixel Black
100
2x2 pixel Black Neg
100
Checkerboard apparent?
100
*On a scale of 0 – 100%. The higher the percentage, the better.
WHAT WE LIKED
Output displayed excellent print density in both copier
and printer modes.
High quality 1200 x 1200 dpi produces smooth and rich
business graphics.
Both color and monochrome output produced by the
Lexmark X792de
MFP was very good. Text was bold,
crisp and cleanly formed.
BERTL photographic test files displayed realistic flesh
tones with a smooth and matte finish.
Excellent resolution in both copy and printer modes.
Very good halftone reproduction in printer mode, as the
device was able to correctly reproduce most of the
halftone shades.
Good halftone reproduction in copier mode.
Very good production of photographic images.
Output displayed very good line reproduction and
average dot control when printing BERTL’s image-
quality evaluation chart.
WHAT WE WOULD LIKE TO SEE
BERTL was satisfied with the Lexmark X792de Color
Laser MFP‘s image quality. However, we would have
liked to have seen less saturation in some photo prints
and better halftone reproduction in both copy and print
functions.
