B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
314/41, 101/43
B41J 31/05 (2006.01) B41J 2/325 (2006.01)
Patent
CA 1260315
7075 Title: THERMAL TRANSFER RECORDING MEDIUM ABSTRACT OF THE DISCLOSURE A thermal transfer ribbon including a resistive heating element layer having a thermally transferable ink layer on the front side thereof is provided with a therm- ally sensitive indicator layer on the back side thereof. Heat generated in the resistive layer fuses the ink which transfers selectively to record grey scale image defining dots of various sizes on an ink receiving sheet in contact with the ink layer. The heat generated in the resistive layer also flows to the indicator layer to form corres- ponding indicator marks which are proportional to the recorded dots. The indicator marks are visible on the back side of the ribbon and are optically monitored to provide feed back to a thermal system for accurately con- trolling the density of pixel area defining the recorded image.
504518
Polaroid Corporation
Smart & Biggar
LandOfFree
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