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:
Dec. 07, 1999
Filed:
Jan. 22, 1999
Johan Loccufier, Zwijnaarde, BE;
Stefaan Lingier, Ossenede, BE;
Sabine Emmers, Lommel, BE;
Jean-Marie Dewanckele, Drongen, BE;
Pierre De Clercq, Gent, BE;
Noel Hosten, Brugge, BE;
Dirk Van Haver, Sint-Niklaan, BE;
Agfa-Gevaert, N.V., Mortsel, BE;
Abstract
A silver halide photographic material is disclosed containing a new type of hydrazide compounds represented by following general formula I, the different symbols of which are defined in the description. ##STR1## In a preferred embodiment Q is chosen from pyridinium, quinolinium or isoquinolinium. In a most preferred embodiment Q is a pyridinium substituted on the N.sup.+ with a C.sub.5 to C.sub.8 alkyl group. The photographic material is preferably a graphic arts recording material. High gradation and excellent hard dot quality are obtained.