| 摘要 |
PROBLEM TO BE SOLVED: To provide a silver halide emulsion and a silver halide photographic sensitive material which suppress fogging due to increased sensitivity while increasing the photographic sensitivity of the photographic emulsion and ensure little increase of fog even when stored at high temperature and high humidity or under severe conditions including exposure to noxious gas generated during combustion, such as automobile exhaust gas. SOLUTION: The silver halide emulsion contains a compound capable of taking part in reactions including a cyclization reaction represented by a chemical reaction formula (1) after oxidation of the compound, wherein X<SB>1</SB>represents a group forming a 5-membered heterocyclic group in combination with C=C; Y<SB>1</SB>represents a group forming a 5- or 6-membered aryl or heterocyclic group in combination with C=C; R<SB>1</SB>and R<SB>2</SB>each represent H or a substituent; M represents a radical, a radical cation or a cation; and R<SB>1</SB>and R<SB>2</SB>may link together to form a 5- or 7-membered ring in combination with C=C. COPYRIGHT: (C)2004,JPO&NCIPI
|
