Printing Methods Printing an image requires the ability to transfer fluid ink or another marking medium onto the substrate in the desired pattern. There are dozens of ways of doing this, but the bulk of package printing can be grouped in three basic categories based on the fundamental geometry of the printing plate: ⚫ Relief : Variations are flexography (commonly referred to as flexo), letterpress, and offset letterpress (commonly referred to as dry offset)Printing Methods Printing an image requires the ability to transfer fluid ink or another marking medium onto the substrate in the desired pattern. There are dozens of ways of doing this, but the bulk of package printing can be grouped in three basic categories based on the fundamental geometry of the printing plate: ⚫ Relief : Variations are flexography (commonly referred to as flexo), letterpress, and offset letterpress (commonly referred to as dry offset)