Technical Reference
Page 245
... for all models except the Optra C710, Optra M410, Optra T family, and Optra W810. This is a boolean that controls the Toner Saver feature. PictureGrade is an integer that provides compatibility with previous Lexmark printer drivers. If Screening is set to None or IET, the values for ImageEnhancement affect Screening in the following way: 0 Changes...
... for all models except the Optra C710, Optra M410, Optra T family, and Optra W810. This is a boolean that controls the Toner Saver feature. PictureGrade is an integer that provides compatibility with previous Lexmark printer drivers. If Screening is set to None or IET, the values for ImageEnhancement affect Screening in the following way: 0 Changes...