Abstract
This investigation was aimed at establishing a relationship between the optical spread function of four common printing stocks (cast coat, enamel gloss, enamel dull and ledger) and a Yule - Neilsen n value in predicting physical dot Area, for offset lithographic printing. Using an offset press each paper stock was printed with a test target containing common screen frequencies at percent dot areas from 5-90"/. and solid ink patches adjacent to each tint. Using planimetry and macrodensitometry, exact n values were calculated for comparison with the measured spread function of that same paper stock. No relationship between the optical spread functions of the printing stocks and a Yule - Neilsen n value was found. Coated stocks (i.e., cast coat, enamel gloss and enamel dull) behaved differently than uncoated stock with respect to n values. This was found to be due to irregular ink coverage on the uncoated stock. n values were found to be screen frequency dependent.
Publication Date
12-6-1986
Document Type
Thesis
Department, Program, or Center
Chester F. Carlson Center for Imaging Science (COS)
Advisor
Altman, Joe
Advisor/Committee Member
Engeldrum, Peter
Advisor/Committee Member
Francis, Ronald
Recommended Citation
Lewis, Paul, "A study of the application of paper spread function data to the prediction of physical dot areas for offset lithography" (1986). Thesis. Rochester Institute of Technology. Accessed from
https://repository.rit.edu/theses/4544
Campus
RIT – Main Campus
Comments
Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in December 2013.