Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Reexamination Certificate
2007-01-16
2007-01-16
Letscher, Geraldine (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
C430S618000, C430S619000, C430S620000
Reexamination Certificate
active
11234691
ABSTRACT:
Ionic liquids are added to black-and-white direct thermographic materials to provide increased image density or to allow for reduced silver coverage (that is, improved silver efficiency). Useful ionic liquids include imidazolium, pyrazolium, pyridinium, pyrimidinium, pyrazinium, tetra-alkylammonium, or tetra-alkylphosphonium cations.
REFERENCES:
patent: 6531270 (2003-03-01), Olson et al.
patent: 6531273 (2003-03-01), Olson et al.
patent: 6586166 (2003-07-01), Olson et al.
patent: 2002/0018970 (2002-02-01), Hirabayashi
patent: 1 315 032 (2003-05-01), None
U.S. Appl. No. 11/234,711 (D-88581) filed on even date herewith, titled “Thermally Developable Materials Processable At Lower Temperatures” by Maskasky and Scaccia.
Cowdery-Corvan Peter J.
Ishida Takuzo
Olson Leif P.
Sakizadeh Kumars
Whitcomb David R.
Eastman Kodak Company
Leichter Louis M.
Letscher Geraldine
Tucker J. Lanny
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