Electrophotographic organophotoreceptors with novel charge transport compounds

US6749978B2 · kind B2 · utility

Assignee

• SAMSUNG ELECTRONICS CO., LTD. · KR

Inventors

• Nusrallah Jubran · Windom, US
• Zbigniew Tokarski · Woodbury, US
• Kam W. Law · Woodbury, US
• Vytautas Getautis · Kaunas, LT
• Jonas Sidaravicius · Vilnius, LT
• Osvaldas Paliulis · Kaunas, LT
• Valentas Gaidelis · Vilnius, LT
• Vygintas Jankauskas · Vilnius, LT

Key dates

• Filing date: May 30, 2003
• Grant date: Jun 15, 2004
• Expiry date: May 30, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G5/0661
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine groups, carbazole groups, triarylamine groups and (N,N-disubstituted)arylamine groups such as dialkarylamine groups (e.g. dimethylphenylamine; methylethylphenylamine, dipropylphenylamine, ethylepropylphenylamine, ethylbutylnaphthylamine, etc.), alkyldiarylamine groups (e.g. methyldiphenylamino, ethyldiphenylamino, etc), and triarylamino groups (e.g., triphenyl amino, trinaphthylamino, etc)) connected by a central bridging group. An example of charge transport compounds are those having the following generic formula:(R—Q)n−Y  Formula Iwherein R is selected from the group consisting of julolidine ring groups, carbazole ring groups, and and (N,N-disubstituted)arylamine groups;Q comprises an aromatic hydrazone linking group, such as Y comprises a bridging group between R—Q— groups, such as a bond, carbon atom, nitrogen atom, oxygen atom, sulfur atom, a methylene group; Z is an aryl group, preferably a phenyl group or naphthyl group; X is a linking group, preferably a methylene group, and for example having the formula &…