Claims
- 1. A thermographic recording element having at least one image forming layer, comprising an organic silver salt, and a reducing agent; and said element having at least one compound of compounds of the following formulas (A) or (B) added to an image forming layer or to a non-image forming layer on the image forming side of a support: wherein Z1 and Z2 each are a group of non-metallic atoms capable of forming a 5- to 7-membered ring,Y1 and Y2 each are —C (═O)— or —SO2—, X1 and X2 each are hydroxy or salt thereof, alkoxy, aryloxy, heterocyclic oxy, mercapto or salt thereof, alkylthio, arylthio, heterocyclic thio, amino, alkylamino, arylamino, heterocyclic amino, acylamino, sulfonamide or heterocyclic group, and Y3 is hydrogen or a substituent.
- 2. The recording element of claim 1, wherein the compound pf formula (A) has at least 6 carbon atoms in total, and the compound of formula (B) has at least 12 carbon atoms in total.
- 3. The recording element of claim 1, wherein in formula (A), the total number of carbon atoms in Z1 is at least 3, and in formula (B), the total number of carbon atoms in Z2 and Y3 is at least 8.
- 4. The recording element of claim 1, further comprising a photosensitive halide.
- 5. The recording element of claim 1, wherein in formulae (A) and (B), the ring structures formed by Z1 and Z2 are 5-membered rings, and both Y1 and Y2 are —C(═O)—.
- 6. The recording element of claim 1, wherein the non-metallic atoms are selected from the group consisting of carbon atom, oxygen atom, sulfur atom, nitrogen atom, and hydrogen atom.
- 7. A thermographic recording element according to claim 1, wherein Y3 is selected from the group consisting of hydrogen, alkyl groups, aryl groups, heterocyclic groups, cyano groups, acyl groups, alkoxycarbonyl groups, aryloxycarbonyl groups, carbamoyl groups, amino groups, alkylamino groups, arylamino groups, heterocyclic amino groups, acylamino groups, sulfonamide groups, ureido groups, thioureido groups, imide groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups, and heterocyclic thio groups.
- 8. A thermographic recording element according to claim 1, wherein Z1 and Z2 are optionally substituted with groups selected from the group consisting of halogen atoms, alkyl groups, alkenyl groups, alkynyl groups, aryl groups, heterocyclic groups, quartenized nitrogen atom-containing heterocyclic groups, acyl groups, alkoxycarbonyl groups, aryloxycarbonyl groups, carbamoyl groups, carboxy groups or salts thereof, sulfonylcarbamoyl groups, acylcarbamoyl groups, sulfamoylcarbamoyl groups, carbazoyl groups, oxalyl groups, oxamoyl groups, cyano groups, thiocarbamoyl groups, hydroxy groups, alkoxy groups, aryloxy groups, heterocyclic oxy groups, acyloxy groups, alkoxycarbonyloxy groups, arlyoxycarbonyloxy groups, carbamoyloxy groups, sulfonyloxy groups, amino groups, alkylamino groups, arylamino groups, heterocyclic amino groups, N-substituted nitrogenous heterocyclic groups, acylamino groups, sulfonamide groups, ureido groups, thioureido groups, imide groups, alkoxycarbonylamino groups, arlyoxycarbonylamino groups, sulfamoylamino groups, semicarbazide groups, thiosemicarbazide groups, hydrazino groups, quaternary amnonio groups, oxamoylamino groups, alkylsulfonylureido groups, arlysulfonylureido groups, acylureido groups, acylsulfamoylamino groups, nitro groups, mercapto groups, alkylthio groups, arylthio groups, heterocyclic thio groups, alkylsulfonyl groups, arylsulfonyl groups, alkylsulfinyl groups, arylsulfinyl groups, sulfo groups or salts thereof, sulfamoyl groups, acylsulfamoyl groups, sulfonylsulfamoyl groups or salt thereof, phosphoramide groups, phosphate ester structure-bearing groups, silyl groups and stannyl groups.
- 9. A thermographic recording element according to claim 1, wherein the salts in X1 and X2 are selected from a group consisting of salts of alkali metals, salts of alkaline earth metals, silver salts, quaternary ammonium salts and quaternary phosphonium salts.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9-354107 |
Dec 1997 |
JP |
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Parent Case Info
This application is a continuation of application Ser. No. 09/201,785, filed on Dec. 1, 1998 is now U.S. Pat. No. 6,232,059, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. § 120; and this application claims priority of application Ser. No. 9-354107 filed in Japan on Dec. 8, 1997 under 35 U.S.C. § 119.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0745898 |
Dec 1996 |
EP |
0803764 |
Oct 1997 |
EP |
9734195 |
Sep 1997 |
WO |
Continuations (1)
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Number |
Date |
Country |
Parent |
09/201785 |
Dec 1998 |
US |
Child |
09/810215 |
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US |