Hydrazone-based charge transport compounds
AssigneeSamsung Electronics Co., Ltd.
InventorsNusrallah Jubran, Zbigniew Tokarski, Kam W. Law
Life of this patent
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Abstract
Improved organophotoreceptor include: (a) a charge transport compound having the formula where R1 has a structure of: in which Ar is selected form the group consisting of; R4 is a hydrogen or an aromatic group and R2 and R3 are, independently, an (N,N-disubstituted) arylamine group; (b) a charge generating compound; and (c) an electrically conductive substrate. Additional improved charge transport compounds have the formula where R1 has a structure of and R2 is a julolidene group or a carbazole group.
Claims20
An organophotoreceptor comprising:
- (a) a charge transport compound having the formula
- where R1 has a structure of:
- in which Ar is selected form the group consisting of;
- R4 is a hydrogen or an aromatic group and R2 and R3 are, independently, an (N,N-disubstituted) arylamine group;
- (b) a charge generating compound;
- and
- (c) an electrically conductive substrate over which said charge transport compound and said charge generating compound are located.
An electrophotographic imaging apparatus comprising:
- (a) a plurality of support rollers;
- and
- (b) an organophotoreceptor operably coupled to said support rollers with motion of said support rollers resulting in motion of said organophotoreceptor, said organophotoreceptor comprising:
- (i) a charge transport compound having the formula
- where R1 has a structure of:
- in which Ar is selected form the group consisting of;
- R4 is a hydrogen or an aromatic group and R2 and R3 are, independently, an (N,N-disubstituted) arylamine group;
- (ii) a charge generating compound;
- and
- (iii) an electrically conductive substrate over which said charge transport compound and said charge generating compound are located.
An electrophotographic imaging process comprising:
- (a) applying an electrical charge to a surface of an organophotoreceptor comprising:
- (i) a charge transport compound having the formula
- where R1 has a structure of:
- in which Ar is selected form the group consisting of;
- R4 is a hydrogen or an aromatic group and R2 and R3 are, independently, an (N,N-disubstituted) arylamine group;
- (ii) a charge generating compound;
- and
- (iii) an electrically conductive substrate over which said charge transport compound and said charge generating compound are located;
- (b) imagewise exposing said surface of said organophotoreceptor to radiation to dissipate charge in selected areas and thereby form a pattern of charged and uncharged areas on said surface;
- (c) contacting said surface with a toner to create a toned image;
- and
- (d) transferring said toned image to a substrate.
A charge transport compound having the formula
- where R1 has a structure of:
- in which Ar is selected form the group consisting of;
- R4 is a hydrogen or an aromatic group and R2 and R3 are, independently, an (N,N-disubstituted) arylamine group.
A charge transport compound having the formula
- where R1 has a structure of
- and R2 is a julolidene group or a carbazole group.
Dependencies are inferred from the claim text.