The causes of errors of Neugebauer functions are analyzed and a method of correcting the functions by means of dot gain value is given, experiment and calculation show that the method can improve the precision of functions.

• 分析纽介堡方程出现误差的原因，提出了利用网点扩大量修正该方程的方法，实验和计算表明，网点扩大量修正法可以明显改善纽介堡方程的计算准确度