A method for adjusting an OLT for power control, which is capable of closely tracking a low tFER. The distal portion includes an annular wall defining a chamber and an opening in communication with the chamber. The at least one chamber is closed, so that by increasing the temperature of the liquid, the pressure in the chamber increases. The baffles along with the widths of the top and bottom sheets define a radially-outwardly curved perimeter wall that is disposed between an edge of the baffles and the sealed peripheral edges of the top and bottom sheets. A modified classification image is generated for representing the foreground image using the pixels classified as belonging to the foreground image while the pixels classified as belonging to the false foreground image are removed. Also novel compounds and ink-jet printer inks, processes and cartridges.