How to set hp printer envy 7855 to print in black?

Set the document or image you want to print in black and white before printing.

Your black cartridge may be empty or clogged.

With most printers, you are required and need to have ink in both the black and color ink cartridges in order to print in black and colors as well. As color ink is needed in this process. They work in conjunction with each other. So you will need to have the both usable color and black ink cartridges with ink, the same thing applies for color. This is to ensure the life of the print head and maintain premium print quality. If the unit were to continue printing, print jobs and cleaning cycles would suck air from the empty cartridge and damage the print head.

I have an HP Envy but haven't printed anything in color from it to our wireless printer.

But I see what looks like where you change the settings. First you go to Print (Ctrl-P). Just below where it identifies the printer, click on Properties. It defaults to Paper/Quality, but you can click on Advanced. Document Options has Color Printing Mode. Set it to whatever's closest to black. My best option seems to be Grayscale, but I was experimenting with text. If what you're printing has any color in it, it won't default to that.