Abstract
A grey-scale printing method on plain paper was studied which applies the 3-level dot-pattern method (the 3-L method) to thermal ink-transfer imaging. A theoretical analysis of the gray-scale printing characteristics was carried out, based on the Yule-Nielsen effect and thermal ink-transfer characteristics. The numbers of equally-spaced gradational levels were studied, and optimum gray densities were found to maximize them. To achieve high quality printing, optimum dot-patterns were selected by the introduction of an evaluation function based on Fourier analysis. Using a thermal ink-transfer fixture with a high resolution (16 dots/mm) thermal head, this method was shown to have good performance.
| Original language | English |
|---|---|
| Pages (from-to) | 57-63 |
| Number of pages | 7 |
| Journal | Journal of Imaging Technology |
| Volume | 10 |
| Issue number | 2 |
| Publication status | Published - 1984 Apr 1 |
ASJC Scopus subject areas
- Engineering(all)
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Cite this
Ohya, J., & Tokunaga, Y. (1984). GRAY-SCALE PRINTING ON PLAIN PAPER USING THERMAL INK-TRANSFER IMAGING. Journal of Imaging Technology, 10(2), 57-63.