Este artigo da Microsoft pode ajudar: Instale uma impressora em um rede doméstica .
Verifique se você não perdeu uma etapa.
To manually connect to a homegroup printer
- On the computer the printer is physically connected to, click the Start button and then click Control Panel. In the search box, type homegroup, and then click HomeGroup.
- Make sure the Printers check box is selected. (If not, select it, and then click Save changes.)
- Go to the computer you want to print from.
- Open HomeGroup by clicking the Start button Picture of the Start button, clicking Control Panel, typing homegroup in the search box, and then clicking HomeGroup.
- Click Install printer.
- If you don't already have a driver installed for the printer, click Install driver in the dialog box that appears.