DataCard UltraGrafix Select Manual de instalación descargar pdf (Pagina 286)

274 ConCAD

Input Levels - Adjust the Black and White Threshold levels

to attain the best looking image. Increasing the black

level will result in a darker image and decreasing the

white level will result in a lighter image. This may result in

loss of gray level information (similar to a contrast

change). Use of the Auto level filter is preferred in this

instance.

Click Input Histogram to view the histogram of the

image before any changes have been made.

Output Levels - Adjust the Black and White Threshold

levels to attain the best looking image. Increasing the

black level cause darker gray levels to be printed

lighter. Decreasing the white level will cause the lighter

gray levels to be printed darker. This will reduce the dray

level range of the image.

Keep Max Threshold - When changing other gray levels

(e.g. Output Levels White Threshold < 255), the value of

a maximum white pixel (tone=255) shall not be

changed. This is useful for pictures that ran through a

background removal algorithm and where the

background is completely white when limiting white

tones to a light gray, however the background shall not

be changed. Note that When opening an older

ConCAD file, this setting is deactivated.

Click Output Histogram to view the image histogram.

This is what will be printed.

Gamma - The Gamma adjusts the gray levels of

midtone values. A higher gamma value yields an overall

lighter image. The correct gamma value depends on

the adjustment of the laser beam train.

For MX6000 systems, the ideal gamma setting is 1.00.

For PB6500 systems, the ideal setting is 2.20.

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DataCard UltraGrafix Select Manual de instalación Pagina 286