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:
Jul. 21, 1998
Filed:
Oct. 30, 1996
Eastman Kodak Company, Rochester, NY (US);
Abstract
An electronic printing method is disclosed which comprises subjecting a radiation sensitive silver halide emulsion layer of a recording element to actinic radiation of at least 10.sup.-4 ergs/cm.sup.2 for up to 100.mu. seconds duration in a pixel-by-pixel mode. The silver halide emulsion layer is comprised of grains predominantly bounded by {100} crystal faces and internally containing three dopants each selected to satisfy a different one of the following class requirements: (i) a metal coordination complex containing a nitrosyl or thionitrosyl ligand in combination with a transition metal chosen from groups 5 to 10 inclusive of the periodic table of elements, (ii) a shallow electron trapping dopant, and (iii) a iridium coordination complex having ligands each of which are more electropositive than a cyano ligand. A gelatino-peptizer for the grains is employed that contains less than 30 micromoles of methionine per gram. The dopants and peptizer in combination increase contrast and provide a highly unexpected increase in high density contrast.