The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 1979
Filed:
Apr. 15, 1977
Masanao Hinata, Minami-ashigara, JP;
Haruo Takei, Minami-ashigara, JP;
Nobuaki Miyasaka, Minami-ashigara, JP;
Kenji Takahashi, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
Silver halide radiographic sensitive materials comprising at least one silver halide photographic emulsion layer on a support, which are used according to a process which comprises exposure to radiation from a fluorescent intensifying screen which emits light having a maximum emission in the green spectral range by excitation with radiation wherein at least 1/2 of the emission energy is in the wavelength range of above about 400 nm, and carrying out development of the exposed sensitive material to form radiographic images, wherein said silver halide sensitive materials contain below about 8.6 g of silver per square meter and said at least one silver halide photographic emulsion layer contains a combination of at least one dye represented by formula (I) and at least one dye represented by formula (II): ##STR1## wherein A.sub.1 and A.sub.2 each represents a hydrogen atom or a halogen atom; A.sub.3 and A.sub.4 each represents a hydrogen atom, a halogen atom, an alkoxy group or a phenyl group; B.sub.1, B.sub.2, B.sub.3 and B.sub.4 each represents a hydrogen atom, a halogen atom or an alkoxy group; R, R.sub.1 and R.sub.2 each represents an alkyl group and at least one of R.sub.1 and R.sub.2 represents a sulfoalkyl group or a carboxyalkyl group; R.sub.0 represents a hydrogen atom or a lower alkyl group, R.sub.3 and R.sub.4 each has the same meaning as R.sub.1 and R.sub.2 ; X.sub.1 represents an anion; m and n each represents an integer of 1 or 2, but m and n are 1 when the dye forms an inner salt; and X.sub.2 represents an anion.