Image recording medium and image recording method
AssigneeFuji Photo Film Co., Ltd.
InventorsTatsuhiko Obayashi, Junichi Yamanouchi, Atsuhiro Ohkawa
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Abstract
A thermal recording medium comprising a ultraviolet absorber precursor represented by formula (1-A) or an image forming compound changing hue and an acid, which is high in thermal sensitivity, recordable with such a low output laser that no ablation takes place even when a thermal heat mode image recording system using a laser is utilized, requiring no different receiving sheet, and excellent in keeping quality: wherein P represents a protecting group for a hydroxyl group which is deblocked by heating to 250° C. or less in the presence of an acid; R1 and R2, which may be the same or different, each represents a substitutable group; and 1 and m each represents an integer of 0 to 4.
Claims20
An image recording medium comprising an ultraviolet absorber precursor represented by formula (1-A) and an acid which is a polymer:
- wherein P represents a protecting group for a hydroxyl group which is capable of being deblocked by heating to 250° C. or less in the presence of an acid;
- R1 and R2, which may be the same or different, each represents a substitutable group;
- 1 and m each represents an integer of 0 to 4;
- and when 1 or m is 2 or more, a plurality of groups represented by R1 or R2, which may be the same or different, may combine together to form a ring.
An image recording medium comprising a compound having an alkoxycarbonyl group P represented by formula (1-B) which is removed from the compound upon the action of heat or an acid, wherein the compound causes a change in the absorption region of 360 to 900 nm upon the bond cleavage of the alkoxycarbonyl group P or upon a following reaction to the bond cleavage of the alkoxycarbonyl group P:
- wherein, in formula (1-B) Ar represents an aryl group and R1 and R2 each represents a substitutable group;
- and wherein said compound has a structure which can form a hydrogen bond within the molecule upon the cleavage of the alkoxycarbonyl group P represented by formula (1-B).
An image recording medium comprising an ultraviolet absorber precursor represented by formula (1-A) and an acid:
- wherein P represents a protecting group for a hydroxyl group which is capable of being deblocked by heating to 250° C. or less in the presence of an acid;
- R1 and R2, which may be the same or different, each represents a substitutable group;
- 1 and m each represents an integer of 0 to 4;
- and when 1 or m is 2 or more, a plurality of groups represented by R1 or R2, which may be the same or different, may combine together to form a ring;
- and wherein the ultraviolet absorber precursor represented by formula (1-A) is separated from the acid by encapsulating the ultraviolet absorber precursor represented by formula (1-A) in a microcapsule or the ultraviolet absorber precursor represented by formula (1-A) and the acid are each applied onto different layers adjacent to each other.
A method for recording an image comprising subjecting an image recording medium to scanning exposure with a laser beam, wherein said medium comprises an ultraviolet absorber precursor represented by formula (1-A) and an acid:
- wherein P represents a protecting group for a hydroxyl group which is capable of being deblocked by heating to 250° C. or less in the presence of an acid;
- R1 and R2, which may be the same or different, each represents a substitutable group;
- 1 and m each represents an integer of 0 to 4;
- and when 1 or m is 2 or more, a plurality of groups represented by R1 or R2, which may be the same or different, may combine together to form a ring.
Dependencies are inferred from the claim text.