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:
Apr. 07, 1998
Filed:
Jun. 07, 1996
Gary John McSweeney, Hilton, NY (US);
Alphonse Dominic Camp, Rochester, NY (US);
Vincent James Flow, Brockport, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
The invention relates to a photographic element comprising at least one layer comprising at least one substituted hydroquinone and adjacent said at least one layer comprising substituted hydroquinone, at least one layer comprising coupler Magenta-1 ##STR1## wherein R.sub.a and R.sub.b independently represent H or a substituent; R.sub.c is a substituent; X is hydrogen or a coupling-off group; and Z.sub.a, Z.sub.b, and Z.sub.c are independently a substituted methine group, .dbd.N--, .dbd.C--, or --NH--, provided that one of either the Z.sub.a --Z.sub.b bond or the Z.sub.b --Z.sub.c bond is a double bond and the other is a single bond, and when the Z.sub.b --Z.sub.c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z.sub.a, Z.sub.b, and Z.sub.c represents a methine group connected to the group R.sub.b, wherein the ratio of gelatin to organic component in said layer comprising magenta 1 is greater than 1.1, wherein said at least one layer comprising substituted hydroquinone comprises a ratio of gelatin to organic component is greater than 1.5, and wherein said element comprises a ratio of gelatin to organic component of greater than 1.25.