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Explanation: There is no such thing as an optimzed dot. A dot is a dot is a dot. The word "optimized" does not refer to the dots, but the condition under which the dots are counted. A printer can have different dot counts under different conditions. Under specific conditions that are considered "optimal," the dot count can be very high. Such conditions may include the type of printing paper, as in the example that you posted. So "2400 optimized dpi" means "2400 dpi under optimal conditions."