7679-CAN THERMAL IMAGING METHODS AND MATERIALS Leuco dyes are provided which comprise the coupling product of a N-acyl substituted aromatic amino color developer and a dye-forming coupler moiety substituted at the coupling carbon with a thermally removable leaving group. Thermal imaging systems employing these leuco dyes have the advantage of reduced bubble formation relative to thermal imaging systems employing prior art leuco dyes containing a group which thermally fragments into one or more gases.
申请公布号
CA2068031(A1)
申请公布日期
1992.11.07
申请号
CA19922068031
申请日期
1992.05.05
申请人
POLAROID CORPORATION
发明人
BOGGS, ROGER A.;COURNOYER, RICHARD L.;ELLIS, ERNEST W.;RUSSO-RODRIGUEZ, SANDRA E.;TELFER, STEPHEN J.;WALLER, DAVID P.;ZURAW, MICHAEL J.