8825/8830 DDS User Guide/9
Getting to know the 8825/8830 DDS
The Scanner
DDS User Interface
Option and Feature keys (continued)
Image Quality
The Image Quality portion of the DDS User Interface allows the operator to
make corrective adjustments to the image and extract the best possible copy
quality from an original document.
The Type area allows selection of Mixed, Photo, or Line documents. Select
Line (factory default) for an image containing text, line art, or a mixture of
these. Select Photo when the document contains a grayscale or color
image, such as a photograph. Select Mixed if the document contains a
mixture of photographic and line images, or halftone images.
Note: the scanning speed changes, depending on the selection. The speeds
are shown in Table 2.
Table 2. Scanning Resolutions and Speeds
7356
7346
Mode
DPI
Pixel
Depth
Min
IPS/
cm/s
Max
IPS/
cm/s
Min
IPS/
cm/s
Max
Line (copy mode
or scan mode)
400
1 bit
3.00/
7.62
3.00/
7.62
2.00/
5.08
2.00/
5.08
Line (scan mode)
300
1 bit
4.00/
10.16
4.00/
10.16
2.67/
6.78
2.67/
6.78
Line (scan mode)
200
1 bit
6.00/
15.24
6.00/
15.24
4.00/
10.16
4.00/
10.16
Line (scan mode)
100
1 bit
6.00/
15.24
6.00/
15.24
4.00/
10.16
4.00/
10.16
Mixed (copy mode)
300
4 bit
1.0/
2.54
4.00/
10.16
0.89/
2.03
2.67/
6.78
Photo (copy mode)
200
8 bit
2.00/
5.08
6.00/
15.24
2.00/
5.08
4.00/
10.16
Speeds are given in inches per second (IPS) and cm per second (cm/s).
Speeds for Photo and Mixed modes are given for 36 in. (91.44) wide
original documents; speeds are faster for narrower documents. For
documents 8.5 inches wide, speeds up to 6.0 in. (15.24 cm) per second may
be obtained in Photo mode, and up to 4.0 in. (10.16 cm) for Mixed mode.
