In recent years, there has been considerable interest in color stability of printed output from a marking engine. In general, colors can vary within a page, page-to-page, job-to-job, and engine-to-engine. Diagnosing the nature and sources of the color variability can help lead to approaches to reduce variability, such as improved subsystem components and improved process controls. In this paper, we discuss a methodology to diagnose the root causes of color variability.
Palghat Ramesh, Peter Paul, Eric Gross, "Print Noise Diagnoses through Correlation Analyses" in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP26), 2010, pp 260 - 262, https://doi.org/10.2352/ISSN.2169-4451.2010.26.1.art00070_1