Patent ID: 6410479
Filing Date: 2002-06-25
Classification: B41M

Abstract:
A thermally sensitive recording medium comprisinga substrate, a thermally sensitive recording medium supported on said substrate, and a glossing layer on said thermally sensitive recording layer, wherein said glossing layer comprises an inorganic pigment and a fixing composition, wherein the surface glossiness of the glossing layer, measured according to for light at an angle of incidence and angle of reflection of 75Â°, is greater than 50%, wherein said inorganic pigment is at least one pigment selected from the group consisting of colloidal silica, barium sulfate, titanium oxide and aluminum hydroxide, wherein the inorganic pigment and fixing composition have an average particle size not larger than 0.3 &mgr;m, and wherein the amount of fixing composition having an average particle size of more than 0.3 &mgr;m is not more than 0.03 parts by weight per part by weight of particles having an average particle size not larger than 0.3 &mgr;m and further wherein said fixing composition does not cause sticking at a temperature higher than 200Â° C., as determined under the following conditions: (1) the fixing composition is coated at a rate of 20 g/cm2, on paper having a density of 60 g/cm2 and a thickness of 74 &mgr;m, and heated for 5 minutes at a temperature of 110Â° C., such that the coating layer of the fixing composition is completely hardened; (2) the obtained coated paper is cut to a size of 4 cmÃ—8 cm and doubled up with the coated surface contacting itself, to form a sample specimen of 4 cmÃ—4 cm; (3) the specimen is placed on a hot plate heated to 200Â° C.; (4) a weight of 500 g (whose base diameter is 4 cm) is placed on the specimen for 5 seconds, after which the specimen is cooled down to room temperature, and the folded specimen is unfolded easily without sticking.