scanner's optics. Interpolated resolution is software-enhanced
resolution and can be useful for enlarging very small images or for
printing line art to obtain superior results.
Resolution Unit
The unit of measurement for resolution is in ppi (pixels per inch) or
lpi (lines per inch). Lpi settings are dimmed if the ruler unit is in
pixels.
To select your resolution unit:
●
Choose
ppi
if your scanned images are intended for on-screen
display; you do not have to go higher than the target
resolution of your monitor (usually 72 dpi for Macintosh and
96 dpi for Windows). A higher resolution will simply increase
the file size of your image without any perceptive
improvement in image quality.
●
Choose
lpi
if your scanned images are to be printed. If you
choose 1x, for instance, your scanned image will be printed at
133 lines per inch, resulting in a 133-dpi image. At 1.5x, the
image will be printed at 199.5 dpi; and at 2x, the image will
be printed at 266 dpi. The Custom option allows you to set an
lpi value of your own specification.
In choosing an appropriate lpi value, keep in mind that if the
resolution is too low, pixelization of the image results, in which the
Postscript language uses a single pixel's color values to create more
than one halftone dot. If the resolution is too high, the file size
becomes unwieldy and your file ends up containing more
information than the printer needs, slowing down the printing
process.
Scan Frame settings
The
Scan Frame
settings (
width
and
height
) provide controls
relating to the output image dimensions.
Summary of Contents for ScanMaker 6100 Pro
Page 66: ... Load Save ...
Page 104: ......
Page 144: ...Brightness and Contrast dialog box ...
Page 145: ...Color Correction dialog box ...
Page 146: ...Color Correction dialog box ...
Page 147: ...Tone Curve dialog box ...
Page 148: ...Brightness and Contrast dialog box ...
Page 149: ...Tone Curve dialog box ...
Page 150: ...Settings window ...
Page 151: ...Descreen ...
Page 152: ...Descreen ...
Page 153: ...Filters ...
Page 154: ...Filters ...
Page 155: ...Image Quality ...
Page 156: ...Fast JPEG Quality ...
Page 161: ...Threshold dialog box ...
Page 162: ...Threshold dialog box ...