Radiographic elements exhibiting increased speed and covering po

Details Radiographic elements exhibiting increased speed and covering po Radiographic elements exhibiting increased speed and covering po

1998-03-09

1999-09-21

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430966, 430603, 430611, 430965, 430402, G03C 110, G03C 516

Patent

active

059552492

ABSTRACT:
A radiographic element is disclosed containing in a high bromide tabular grain emulsion layer a 5-mercaptotetrazole to increase covering power. The 5-mercaptotetrazole is additionally capable of increasing imaging speed and producing colder image tones when provided with a phenyl substituent in the 1 ring position, which phenyl substituent is in turn substituted in its para position with a substituent satisfying the formula R(OCH.sub.2 CH.sub.2).sub.n O-- wherein n is an integer of from zero to 5; when n is 1 to 5, R is hydrogen, methyl or ethyl; and, when n is zero, R is methyl.

REFERENCES:
patent: 3150977 (1964-09-01), Hart et al.
patent: 3895948 (1975-07-01), Shiba et al.
patent: 4983494 (1991-01-01), Kitaguchi et al.
Research Disclosure, vol. 184, Aug. 1979, Item 18431, II.

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