A recording sheet, to be printed in a color thermal printer, includes a support and thermosensitive coloring layers of yellow, magenta and cyan formed thereon, the three coloring layers arranged from an obverse toward a reverse of the recording sheet. The recording sheet is rotated to pass under a thermal...http://www.google.com.au/patents/US5486856?utm_source=gb-gplus-sharePatent US5486856 - Color thermal printer
