HP Deskjet 6840 Color Inkjet Printer - Manual (Page 68)

For great black-and-white photos, install a gray photo print cartridge and a tri-color
printer cartridge in the printer.
Printing a black-and-white photo
To print a photo that is already black and white, simply follow the instructions for the
type and size of photo that you want to print.
Printing a color photo in black and white
Follow these steps to print a color photo in black and white:
1. Open the Printer Properties dialog box.
2. Click the Color tab.
3. Select the Print in grayscale check box.
4. Click the High quality option.
5. Select any other print settings that you want, and then click OK.
6.12 Storing and handling photo paper
Follow these instructions to maintain the quality of your HP brand photo paper.
HP Deskjet 6800 series printer
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