130 Printing Guide [HP Driver] - Printing in Black & White [Adobe Photoshop CS - Mac OS X]

• Click OK.

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.

• 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

white channel of varying opacity, negative values act as a black channel, positive values

act as a white channel.

• Click OK.