![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
The prints produced by an automatic printer may vary systematically in density level and in colour balance as functions of the densities of the negatives. These variations are usually functions of reciprocity failure of the paper, and of spectral sensitivity-differences between paper and monitoring photocells. Slope control provides means for attaining high quality prints from negatives of widely differing densities in spite of inherent printer and paper limitations. The application of slope control to a particular printer is described.