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US 6,187,491 B1Granted
Electrophotographic charge generating element containing acid scavenger in overcoat
AssigneeEastman Kodak Company
InventorsWayne T. Ferrar, J. Robin Cowdery, William T. Gruenbaum, David S. Weiss
Life of this patent
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Abstract
Electrophotographic charge generating elements comprise a solid electrolyte layer having improved image discrimination. The solid electrolyte layer includes a complex of a silsesquioxane and a charge carrier, and further includes nondiffusible acid scavengers in an amount of at least 0.2 weight %. The acid scavengers are nondiffusible tertiary arylamines having a pKa of at least 4.
Claims22
An electrophotographic charge generating element comprising, in order:
- (a) an electrically conductive layer,
- (b) a photoconductor charge generating layer, and
- (c) a solid electrolyte layer comprising a silsesquioxane salt complex, and at least 0.2 weight % of a nondiffusible acid scavenger that is a tertiary arylamine having a pKa of at least 4 in water.
An electrophotographic charge generating element comprising, in order:
- (a) an electrically conductive layer,
- (b) a photoconductor charge generating layer,
- (c) a primer layer having a surface resistivity of at least 1010 ohms/square, and
- (d) a solid electrolyte layer comprising a silsesquioxane salt complex and from about 1 to about 30 weight % of a nondiffusible acid scavenger that is a tertiary arylamine having a pKa of from about 4 to about 8 in water.
1 more element
Dependencies are inferred from the claim text.