Convert The Image To Grayscale - HP C7791C - DesignJet 130 Color Inkjet Printer Printing Manual

Click OK.
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5. Convert the image to grayscale. We present you two ways to perform the conversion, choose the
best one for you:
a) Let Photoshop do the conversion, Image menu > Mode > Grayscale.
b) You can choose the percentage contribution from each color channel when creating the gray
image: Image mode > Adjustments > Channel Mixer:
Check Monochrome.
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• Drag any source channel's slider to the left to decrease the channel's contribution to the
output channel or to the right to increase it, or enter a value between -200% and +200%
in the text box. Using a negative value inverts the source channel before adding it to the
output channel.
Drag the slider or enter a value for the Constant option. This option adds a black or
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white channel of varying opacity, negative values act as a black channel, positive values
act as a white channel.
Click OK.
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