Assertion: coloring material | /r/ObjectUse | used on the transfer sheet
Facets:
Source sentences:
text: The present invention involves the use of a copy paper free of imaging pigment or dyestuff comprising a paper sheet coated on its printing side with a heat modifiable, heat softenable or a low melting point solid, which when heated softens and becomes variously otherwise modified into a state in which it is a solvent for the coloring material used on the transfer sheet.