You can assign a name to your computer when you install the printer software for the first time. Choose this name when you scan an item on the network printer and want to send the scanned image to your computer. The name of the computer can be changed, as needed.
From the Finder desktop, double-click the Lexmark 3500-4500 Series folder.
Double-click the Lexmark 3500-4500 Series Center icon.
From the menu, choose Advanced 
Network Scan Settings.
In the Computer Name field, type in the name of your computer.
Click Save.