<p>A photographic imaging system is disclosed comprised of a hardenable organic component containing ethylenic unsaturation sites and coinitiators for ethylenic addition. The coinitiators include an activator and a photosensitizer. The photosensitizer is a 6-tertiary amino-2-(Z-CH=)benzofuran dye, where Z represents the atoms providing an electron withdrawing carbonyl or sulfonyl group and completing a conjugated methine linkage extending from the electron withdrawing carbonyl group through the benzofuran to the electron donating 6-tertiary amino substituent to form a resonant dye chromophore. The photosensitizers bathochromically extend exposure response of the imaging system.</p>
申请公布号
EP0341566(A2)
申请公布日期
1989.11.15
申请号
EP19890108013
申请日期
1989.05.03
申请人
EASTMAN KODAK COMPANY (A NEW JERSEY CORPORATION)
发明人
CHEN, CHIN HSIN C/O EASTMAN KODAK COMPANY;FOX, JOHN LEONARD;SPECHT, DONALD PAUL C/O EASTMAN KODAK COMPANY;FARID, SAMIR YACOUB C/O EASTMAN KODAK COMPANY