IBM 1800409-001A ユーザーズマニュアル
Gamma Correction
NOTE: When using the Enhanced Halftone setting, Gamma
Correction should be set to None.
As with most other printer settings, gamma correction (which is a
means of optimizing gray scales and shades of color) can probably
be set through your application (see your application
documentation for more information.) However, we provide a
default gamma setting for each of the printer default halftone
settings: Gamma53, Gamma71, Gamma80, and Gamma106. We
also provide a None setting to turn off gamma correction.
means of optimizing gray scales and shades of color) can probably
be set through your application (see your application
documentation for more information.) However, we provide a
default gamma setting for each of the printer default halftone
settings: Gamma53, Gamma71, Gamma80, and Gamma106. We
also provide a None setting to turn off gamma correction.
Often in images, gray scaling or shades of color may be too light
or dark to show details clearly. Using gamma correction on a
gray-scale image is similar to using a graphic equalizer on a home
stereo: the range of gray levels is adjusted for the best possible
result. This sharpens overall midrange contrast while shadows and
highlights keep their original values.
or dark to show details clearly. Using gamma correction on a
gray-scale image is similar to using a graphic equalizer on a home
stereo: the range of gray levels is adjusted for the best possible
result. This sharpens overall midrange contrast while shadows and
highlights keep their original values.
Printer-Resident Color Rendering Dictionaries
If you use the QMS-supplied Windows or Macintosh driver (or an
application capable of PostScript Level 2 printing, such as Adobe
PhotoShop), the printer-resident CRDs allow you to achieve
device-independent color. Your printer comes with a Colorimetric
CRD, a Business CRD, and a Photographic CRD.
application capable of PostScript Level 2 printing, such as Adobe
PhotoShop), the printer-resident CRDs allow you to achieve
device-independent color. Your printer comes with a Colorimetric
CRD, a Business CRD, and a Photographic CRD.
Each CRD is provided in a 300 dpi and a 600 dpi version. Choose
a 300 CRD setting (along with the Enhanced halftone) when
printing in 300 dpi resolution. Choose a 600 CRD setting (along
with the Enhanced halftone) when printing in 600 dpi resolution.
a 300 CRD setting (along with the Enhanced halftone) when
printing in 300 dpi resolution. Choose a 600 CRD setting (along
with the Enhanced halftone) when printing in 600 dpi resolution.
Chapter 7
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O p t i m i z i n g C o l o r O u t p u t