Patents Examined by John J. Goodrow
  • Bipolar electrophotographic elements
    Patent number: 6022656
    Abstract: A photoconductive element comprising an electrically conductive support and at least one active layer, said active layer comprising N-(p-(di-p-tolylamino)phenyl)-N'-(1,2-dimethylpropyl)-1,4,5,8-naphthalenet etracarboxylic diimide and one or more perylene dyes of structure I: ##STR1## wherein R.sub.1 and R.sub.2 are, each independently, ##STR2## and R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 and R.sub.12 are, each independently, H, CH.sub.3, or C.sub.2 -C.sub.4 alkyl, linear or branched.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: February 8, 2000
    Assignee: Eastman Kodak Company
    Inventors: Susan A. Visser, Paul M. Borsenberger, Jeanne E. Kaeding