A polyurethane foam is prepared from a reaction mixture that includes an aromatic isocyanate compound, and blowing agent, and a polyol that itself includes a poly having a number average molecular weight of 600 to 2000 atomic mass units and an average of 1. An image formation system provides lighting of a product to facilitate acquiring images that can be automatically processed to generate high resolution item-only images free of quality defects and imaging artifacts. The crest factor of the original waveform may be reduced using a limiter.