Patent ID: 7144672
Filing Date: 2006-12-05
Classification: B41M

Abstract:
1. An image forming method of a thermal transfer recording material comprising an ink sheet comprising, on a substrate sheet, an ink layer containing a thermally diffusible dye capable of forming a chelate with a metal, and an image receiving sheet comprising, on a substrate, a dye receiving layer containing a metal ion containing compound capable of forming a metal chelate compound upon reaction with the thermally diffusible dye, the method comprising the steps of: (a) superimposing the ink layer onto the dye receiving layer, and (b) imagewise heating the ink sheet based on a recording signal to transfer the thermally diffusible dye from the ink sheet to the image receiving sheet, wherein the imagewise heating is performed at a print rate of not more than 1.5 msec/line, and the dye receiving layer further contains a metal ion species different from the metal ion containing compound or at least one compound selected from the group of a sorbitan fatty acid ester, a sorbitan fatty acid ester having a polyoxyethylene group, a phosphoric acid ester, a compound represented by the following formula (1) and a compound represented by the following formula (2): wherein n is an integer of 100 to 200; m is an integer of 10 to 50; wherein W is —CH