Back to results
US 7,094,510 B2Granted
Organophotoreceptor with a charge transport material having two (9-fluorenylidene)malononitrile groups
AssigneeSamsung Electric Co., Ltd.
InventorsNusrallah Jubran, Zbigniew Tokarski, Kam W. Law, Eric Morrison, Vytautas Getautis, Vygintas Jankauskas
Life of this patent
Estimating the term…
Abstract
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula X-Z-X′ where X and X′ are, each independently, a (9-fluorenylidene)malononitrile group, and Z is a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
Claims22
An organophotoreceptor comprising an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
- (a) a charge transport material having the formula
- X-Z-X′
- where X and X′, each independently, have the formula
- where Y is O—CH2—CH2—O, S, or NR8 and R8 is H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group, and Z is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 30, inclusive, and one or more of the methylene groups may be replaced by O, S, C═O, Si═O, S(═O)2, P(═O)2, an aromatic group, a heterocyclic group, an aliphatic cyclic group, a Si(R1)(R2) group, a BR3 group, a NR4 group, a CHR5 group, or a CR6R7 group where R1, R2, R3, R4, R5, R6, and R7 are, each independently, H, halogen, hydroxyl, thiol, an alkoxy group, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a cyclic ring;
- and
- (b) a charge generating compound.
3 more elements
An electrophotographic imaging apparatus comprising:
- (a) a light imaging component;
- and
- (b) an organophotoreceptor oriented to receive light from the light imaging component, the organophotoreceptor comprising an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
- (i) a charge transport material having the formula
- X-Z-X′
- where X and X′, each independently, have the formula
- where Y is O—CH2—CH2—O, S, or NR8 and R8 is H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group, and Z is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 30, inclusive, and one or more of the methylene groups may be replaced by O, S, C═O, Si═O, S(═O)2, P(═O)2, an aromatic group, a heterocyclic group, an aliphatic cyclic group, a Si(R1)(R2) group, a BR3 group, a NR4 group, a CHR5 group, or a CR6R7 group where R1, R2, R3, R4, R5, R6, and R7 are, each independently, H, halogen, hydroxyl, thiol, an alkoxy group, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a cyclic ring;
- and
- (ii) a charge generating compound.
6 more elements
An electrophotographic imaging process comprising;
- (a) applying an electrical charge to a surface of an organophotoreceptor comprising an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising
- (i) a charge transport material having the formula
- X-Z-X′
- where X and X′, each independently, have the formula
- where Y is O—CH2—CH2—O, S, or NR8 and R8 is H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group, and Z is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 30, inclusive, and one or more of the methylene groups may be replaced by O, S, C═O, Si═O, S(═O)2, P(═O)2, an aromatic group, a heterocyclic group, an aliphatic cyclic group, a Si(R1)(R2) group, a BR3 group, a NR4 group, a CHR5 group, or a CR6R7 group where R1, R2, R3, R4, R5, R6, and R7 are, each independently, H, halogen, hydroxyl, thiol, an alkoxy group, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a cyclic ring;
- and
- (ii) a charge generating compound.
- (b) imagewise exposing the surface of the organophotoreceptor to radiation to dissipate charge in selected areas and thereby form a pattern of charged and uncharged areas on the surface;
- (c) contacting the surface with a toner to create a toned image;
- and
- (d) transferring the toned image to substrate.
8 more elements
A charge transport material having the formula
- X-Z-X′
- where X and X′, each independently, have the formula
- where Y is O—CH2—CH2—O, S, or NR8 and R8 is H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group, and Z is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 30, inclusive, and one or more of the methylene groups may be replaced by O, S, C═O, Si═O, S(═O)2, P(═O)2, an aromatic group, a heterocyclic group, an aliphatic cyclic group, a Si(R1)(R2) group, a BR3 group, a NR4 group, a CHR5 group, or a CR6R7 group where R1, R2, R3, R4, R5, R6, and R7 are, each independently, H, halogen, hydroxyl, thiol, an alkoxy group, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a cyclic ring.
Dependencies are inferred from the claim text.