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AssigneeMitsubishi Rayon Co., Ltd.
InventorsKenji Kushi, Takayuki Iseki, Tadayuki Fujiwara, Kazuhiko Jufuku, Akifumi Ueda
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A recording medium for sublimation type heat-sensitive transfer recording process, in which an image receiving layer comprising a resin composition containing a dyeable resin and at least one phosphite antioxidant shown in Formulas (1), (2), or (3) is formed on a substrate surface. This recording medium for sublimation type heat-sensitive recording methods has extremely superior light resistance, and the image recorded on this recording medium suffers little fade out or discoloration as a result of exposure to light, so that this recording medium is expected to contribute greatly to the spread of video printers and the like. ##STR1## (In Formula (1), R.sub.1 and R.sub.2 represent H or an alkyl group having a number of carbon atoms within a range of 1-20, R.sub.3 and R.sub.4 represent alkyl groups having a number of carbon atoms within a range of 1-20, X represents H or an atomic group having 1-10 carbon atoms as a main skeleton thereof, and n has a value of 1, 2, 3, or 4.) ##STR2## (In Formula (2), R.sub.5 and R.sub.6 represent H or an alkyl group having a number of carbon atoms within a range of 1-20, R.sub.7 represents an alkyl group having a number of carbon atoms within a range of 1-20, Y represents H or an atomic group having 1-10 carbon atoms as a main skeleton thereof, and n has a value of 1, 2, 3, or 4.) ##STR3## (In Formula (3), RS, R.sub.9, R.sub.10, and R.sub.11 represent H or an alkyl group having a number of carbon atoms within a range of 1-20, Z represents H or an atomic group having 1-10 carbon atoms as a main skeleton thereof, and n has a value of 1, 2, 3, or 4.)
A recording medium for sublimation heat-sensitive transfer recording, wherein an image receiving layer comprising a resin composition containing dyeable resin and at least one member selected from the group consisting of phosphite antioxidants shown in Formulas (1), (2), and (3) below, is formed on a substrate ##STR23## wherein R.sub.1 and R.sub.2 represent H or an alkyl group having a number of carbon atoms within a range of 1-20, R.sub.3 and R.sub.4 represent an alkyl group having a number of carbon atoms within a range of 1-20, X represents H or an atomic group having 1-10 carbon atoms as a main skeleton thereof, and n has a value of 1, 2, 3, or 4 ##STR24## wherein R.sub.5 and R.sub.6 represent H or an alkyl group having a number of carbon atoms within a range of 1-20, R.sub.7 represents an alkyl group having a number of carbon atoms within a range of 1-20, Y represents H or an atomic group having 1-10 carbon atoms as a main skeleton thereof, and n has a value of 1, 2, 3, or 4. ##STR25## wherein R.sub.8, R.sub.9, R.sub.10, and R.sub.11 represent H or an alkyl group having a number of carbon atoms within a range of 1-20, Z represents H or a monocyclic atomic group having 1-13 carbon atoms as a main skeleton thereof, and n has a value of 1, 2, 3, or 4.
Dependencies are inferred from the claim text.