Effects of Screen Ruling on Color of Printed Matter
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| Title | Effects of Screen Ruling on Color of Printed Matter |
| Authors | |
| Abstract | The effects of screen ruling on color gamut were studied using 175, 330, 700 lines per inch (LPI) halftone printed matter. The reflectance in the muddiness wavelength range, i.e., green (G) range of cyan (C) ink and blue (B) range of magenta (M) ink, improved drastically with increasing screen ruling. Micro reflection spectra of dot and non-dot (paper) areas were measured. With C printed matter, the G reflectance of dot area increased and that of non-dot area in red (R) range decreases with increasing the screen ruling. With M printed matter, the reflectance of dot area in B range increased and that of non-dot area in G range decreased with increasing the screen ruling. With accurate ink yellow (Y) printed matter, reflectance of the none-dot area in B region decreased with increasing the screen ruling. These phenomena can be explained by optical dot gain. Resulting these phenomena, color appearance became better according to increase the screen ruling. |
| Publisher | Acta Graphica |
| Date | 2005-12-07 |
| Source | Acta Graphica Vol 17, No 1-4 (2005) |
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