Light sensitive element having an antihalation layer
Photographic infra-red sensitized material containing a speed enhancing agent
Photographic element with near-infrared antihalation layer Patent #: 5330884
ApplicationNo. 445455 filed on 05/31/1995
US Classes:430/522, Intercyclic methine or azomethine and cyclic ring containing430/512, Filters ultraviolet radiation430/561Azo dye
ExaminersPrimary: Bowers, Charles L. Jr.
Assistant: Young, Christopher G.
Foreign Patent References
International ClassG03C 001/83
AbstractA novel dye and photographic element comprising the dye are detailed. The dye is especially useful as an antihalation dye in a photographic element. A particularly preferred embodiment is provided in a photographic element comprising an absorbing amount of the dye: ##STR1## wherein X1, X2 independently represents --CR8 R9 --, --S--, --Se--, --NR10 --, --CH=CH-- or --O--;R1 and R2 independently represent alkyl of 1 to 10 carbons or substituted alkyl of 1 to 10 carbons;R3 represents a ring chosen from the set consisting of aromatic ring of 6 or 10 carbons, substituted aromatic ring of 6 or 10 carbons, a heterocyclic ring and a substituted heterocyclic ring;R4, R5, R6 and R7 independently represent hydrogen, alkyl of 1-10 carbons, substituted alkyl of 1-10 carbons;R8, R9 independently represent alkyl of 1-10 carbons, substituted alkyl of 1-10 carbons, aromatic ring of 6 or 10 carbons, substituted aromatic ring of 6 or 10 carbons;R10 represents an alkyl of 1-10 carbons, substituted alkyl of 1-10 carbons, aromatic ring of 6 or 10 carbons, substituted aromatic ring of 6 or 10 carbons;Q represents a counterion; andn is an integer chosen from 2 and 3.
Field of SearchIntercyclic methine or azomethine and cyclic ring containing
Antihalation or filter layer containing
Filters ultraviolet radiation
Organic dye or pigment containing
Identified backing or protective layer containing
Synthetic resin or cellulose derivative containing
Silver compound sensitizer
Silver compound sensitizer containing
Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., indigoid dyes, etc.)