Open AccessStatistical evaluation of a Color Managed Digital Printing Workflow (CMDPW) consistency [4th C of CMW]
Author(s) -
Haji Naik Dharavath
Publication year - 2021
Publication title -
jged. journal of graphic engineering and design/journal of graphic engineering and design
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.144
H-Index - 2
eISSN - 2217-9860
pISSN - 2217-379X
DOI - 10.24867/jged-2021-4-017
Subject(s) - digital printing , color management , consistency (knowledge bases) , icc profile , standard deviation , computer science , workflow , color measurement , statistical process control , inkwell , process (computing) , computer graphics (images) , mathematics , color space , engineering drawing , artificial intelligence , statistics , engineering , color model , database , image (mathematics) , speech recognition , operating system
The purpose of this applied research was to determine the Color Managed Digital Printing Workflow (CMDPW) consistency (4th C of the color management) over a period of time [100 days, (N = 100)]. The quality of digital color printing is determined by these influential factors: screening method applied, type of printing process, calibration method, device profile, ink (dry-toner or liquid-toner), printer resolution and the substrate (paper). For this research, only the color printing attributes such as the overall average color deviation [ACD, ΔE (2000)] and the solid ink density (SID) were analyzed to examine the CMDPW process consistency in a day-to- day digital printing operation. These are the color attributes which are monitored and managed for quality accuracy during the printing. Printed colors of the random sample size (n = 80) were measured against the GRACoL2013 standards to derive the colorimetric/densitometric values. Reference colorimetric values used in the analysis were the threshold deviations (acceptable color deviations) as outlined in the ISO12647-7 standards (GRACoL2013). A control charts analysis was applied for further determining the process (CMDPW) SID and ACD variation. The data collected were run through multiple software applications (MS-Excel/SPSS/Minitab) to apply various statistical methods. Analyzed data from the experiment revealed that the printed colorimetric values were in match (aligned) with the GRACoL 2013 (reference/target). Since the SID values of CMYK colors were in control throughout the process, this enabled the CMDPW to produce consistent acceptable color deviation (Average Printed ΔE (2000) = 2.978; SD = 0.437; Acceptable Threshold color deviation is ΔE (2000) ≤ 3.00).